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51 |
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52 | (function (root, factory) {
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53 | 'use strict';
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54 |
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55 |
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56 |
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57 | if (typeof define === 'function' && define.amd) {
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58 | define(['exports'], factory);
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59 | } else if (typeof exports !== 'undefined') {
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60 | factory(exports);
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61 | } else {
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62 | factory((root.esprima = {}));
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63 | }
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64 | }(this, function (exports) {
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65 | 'use strict';
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66 |
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67 | var Token,
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68 | TokenName,
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69 | FnExprTokens,
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70 | Syntax,
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71 | PropertyKind,
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72 | Messages,
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73 | Regex,
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74 | SyntaxTreeDelegate,
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75 | XHTMLEntities,
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76 | ClassPropertyType,
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77 | source,
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78 | strict,
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79 | index,
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80 | lineNumber,
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81 | lineStart,
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82 | length,
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83 | delegate,
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84 | lookahead,
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85 | state,
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86 | extra;
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87 |
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88 | Token = {
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89 | BooleanLiteral: 1,
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90 | EOF: 2,
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91 | Identifier: 3,
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92 | Keyword: 4,
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93 | NullLiteral: 5,
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94 | NumericLiteral: 6,
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95 | Punctuator: 7,
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96 | StringLiteral: 8,
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97 | RegularExpression: 9,
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98 | Template: 10,
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99 | XJSIdentifier: 11,
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100 | XJSText: 12
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101 | };
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102 |
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103 | TokenName = {};
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104 | TokenName[Token.BooleanLiteral] = 'Boolean';
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105 | TokenName[Token.EOF] = '<end>';
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106 | TokenName[Token.Identifier] = 'Identifier';
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107 | TokenName[Token.Keyword] = 'Keyword';
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108 | TokenName[Token.NullLiteral] = 'Null';
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109 | TokenName[Token.NumericLiteral] = 'Numeric';
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110 | TokenName[Token.Punctuator] = 'Punctuator';
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111 | TokenName[Token.StringLiteral] = 'String';
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112 | TokenName[Token.XJSIdentifier] = 'XJSIdentifier';
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113 | TokenName[Token.XJSText] = 'XJSText';
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114 | TokenName[Token.RegularExpression] = 'RegularExpression';
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115 |
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116 |
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117 | FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
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118 | 'return', 'case', 'delete', 'throw', 'void',
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119 |
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120 | '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
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121 | '&=', '|=', '^=', ',',
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122 |
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123 | '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
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124 | '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
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125 | '<=', '<', '>', '!=', '!=='];
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126 |
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127 | Syntax = {
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128 | ArrayExpression: 'ArrayExpression',
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129 | ArrayPattern: 'ArrayPattern',
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130 | ArrowFunctionExpression: 'ArrowFunctionExpression',
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131 | AssignmentExpression: 'AssignmentExpression',
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132 | BinaryExpression: 'BinaryExpression',
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133 | BlockStatement: 'BlockStatement',
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134 | BreakStatement: 'BreakStatement',
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135 | CallExpression: 'CallExpression',
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136 | CatchClause: 'CatchClause',
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137 | ClassBody: 'ClassBody',
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138 | ClassDeclaration: 'ClassDeclaration',
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139 | ClassExpression: 'ClassExpression',
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140 | ClassProperty: 'ClassProperty',
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141 | ComprehensionBlock: 'ComprehensionBlock',
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142 | ComprehensionExpression: 'ComprehensionExpression',
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143 | ConditionalExpression: 'ConditionalExpression',
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144 | ContinueStatement: 'ContinueStatement',
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145 | DebuggerStatement: 'DebuggerStatement',
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146 | DoWhileStatement: 'DoWhileStatement',
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147 | EmptyStatement: 'EmptyStatement',
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148 | ExportDeclaration: 'ExportDeclaration',
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149 | ExportBatchSpecifier: 'ExportBatchSpecifier',
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150 | ExportSpecifier: 'ExportSpecifier',
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151 | ExpressionStatement: 'ExpressionStatement',
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152 | ForInStatement: 'ForInStatement',
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153 | ForOfStatement: 'ForOfStatement',
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154 | ForStatement: 'ForStatement',
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155 | FunctionDeclaration: 'FunctionDeclaration',
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156 | FunctionExpression: 'FunctionExpression',
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157 | Identifier: 'Identifier',
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158 | IfStatement: 'IfStatement',
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159 | ImportDeclaration: 'ImportDeclaration',
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160 | ImportSpecifier: 'ImportSpecifier',
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161 | LabeledStatement: 'LabeledStatement',
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162 | Literal: 'Literal',
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163 | LogicalExpression: 'LogicalExpression',
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164 | MemberExpression: 'MemberExpression',
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165 | MethodDefinition: 'MethodDefinition',
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166 | ModuleDeclaration: 'ModuleDeclaration',
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167 | NewExpression: 'NewExpression',
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168 | ObjectExpression: 'ObjectExpression',
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169 | ObjectPattern: 'ObjectPattern',
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170 | ObjectTypeAnnotation: 'ObjectTypeAnnotation',
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171 | OptionalParameter: 'OptionalParameter',
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172 | ParametricTypeAnnotation: 'ParametricTypeAnnotation',
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173 | ParametricallyTypedIdentifier: 'ParametricallyTypedIdentifier',
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174 | Program: 'Program',
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175 | Property: 'Property',
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176 | ReturnStatement: 'ReturnStatement',
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177 | SequenceExpression: 'SequenceExpression',
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178 | SpreadElement: 'SpreadElement',
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179 | SpreadProperty: 'SpreadProperty',
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180 | SwitchCase: 'SwitchCase',
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181 | SwitchStatement: 'SwitchStatement',
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182 | TaggedTemplateExpression: 'TaggedTemplateExpression',
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183 | TemplateElement: 'TemplateElement',
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184 | TemplateLiteral: 'TemplateLiteral',
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185 | ThisExpression: 'ThisExpression',
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186 | ThrowStatement: 'ThrowStatement',
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187 | TryStatement: 'TryStatement',
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188 | TypeAnnotatedIdentifier: 'TypeAnnotatedIdentifier',
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189 | TypeAnnotation: 'TypeAnnotation',
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190 | UnaryExpression: 'UnaryExpression',
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191 | UpdateExpression: 'UpdateExpression',
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192 | VariableDeclaration: 'VariableDeclaration',
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193 | VariableDeclarator: 'VariableDeclarator',
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194 | VoidTypeAnnotation: 'VoidTypeAnnotation',
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195 | WhileStatement: 'WhileStatement',
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196 | WithStatement: 'WithStatement',
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197 | XJSIdentifier: 'XJSIdentifier',
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198 | XJSNamespacedName: 'XJSNamespacedName',
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199 | XJSMemberExpression: 'XJSMemberExpression',
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200 | XJSEmptyExpression: 'XJSEmptyExpression',
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201 | XJSExpressionContainer: 'XJSExpressionContainer',
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202 | XJSElement: 'XJSElement',
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203 | XJSClosingElement: 'XJSClosingElement',
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204 | XJSOpeningElement: 'XJSOpeningElement',
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205 | XJSAttribute: 'XJSAttribute',
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206 | XJSSpreadAttribute: 'XJSSpreadAttribute',
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207 | XJSText: 'XJSText',
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208 | YieldExpression: 'YieldExpression'
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209 | };
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210 |
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211 | PropertyKind = {
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212 | Data: 1,
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213 | Get: 2,
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214 | Set: 4
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215 | };
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216 |
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217 | ClassPropertyType = {
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218 | 'static': 'static',
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219 | prototype: 'prototype'
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220 | };
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221 |
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222 |
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223 | Messages = {
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224 | UnexpectedToken: 'Unexpected token %0',
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225 | UnexpectedNumber: 'Unexpected number',
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226 | UnexpectedString: 'Unexpected string',
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227 | UnexpectedIdentifier: 'Unexpected identifier',
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228 | UnexpectedReserved: 'Unexpected reserved word',
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229 | UnexpectedTemplate: 'Unexpected quasi %0',
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230 | UnexpectedEOS: 'Unexpected end of input',
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231 | NewlineAfterThrow: 'Illegal newline after throw',
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232 | InvalidRegExp: 'Invalid regular expression',
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233 | UnterminatedRegExp: 'Invalid regular expression: missing /',
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234 | InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
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235 | InvalidLHSInFormalsList: 'Invalid left-hand side in formals list',
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236 | InvalidLHSInForIn: 'Invalid left-hand side in for-in',
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237 | MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
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238 | NoCatchOrFinally: 'Missing catch or finally after try',
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239 | UnknownLabel: 'Undefined label \'%0\'',
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240 | Redeclaration: '%0 \'%1\' has already been declared',
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241 | IllegalContinue: 'Illegal continue statement',
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242 | IllegalBreak: 'Illegal break statement',
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243 | IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
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244 | IllegalReturn: 'Illegal return statement',
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245 | IllegalYield: 'Illegal yield expression',
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246 | IllegalSpread: 'Illegal spread element',
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247 | StrictModeWith: 'Strict mode code may not include a with statement',
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248 | StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
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249 | StrictVarName: 'Variable name may not be eval or arguments in strict mode',
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250 | StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
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251 | StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
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252 | ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
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253 | DefaultRestParameter: 'Rest parameter can not have a default value',
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254 | ElementAfterSpreadElement: 'Spread must be the final element of an element list',
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255 | PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
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256 | ObjectPatternAsRestParameter: 'Invalid rest parameter',
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257 | ObjectPatternAsSpread: 'Invalid spread argument',
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258 | StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
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259 | StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
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260 | StrictDelete: 'Delete of an unqualified identifier in strict mode.',
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261 | StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode',
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262 | AccessorDataProperty: 'Object literal may not have data and accessor property with the same name',
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263 | AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name',
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264 | StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
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265 | StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
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266 | StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
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267 | StrictReservedWord: 'Use of future reserved word in strict mode',
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268 | NewlineAfterModule: 'Illegal newline after module',
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269 | NoFromAfterImport: 'Missing from after import',
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270 | InvalidModuleSpecifier: 'Invalid module specifier',
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271 | NestedModule: 'Module declaration can not be nested',
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272 | NoUnintializedConst: 'Const must be initialized',
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273 | ComprehensionRequiresBlock: 'Comprehension must have at least one block',
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274 | ComprehensionError: 'Comprehension Error',
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275 | EachNotAllowed: 'Each is not supported',
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276 | InvalidXJSAttributeValue: 'XJS value should be either an expression or a quoted XJS text',
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277 | ExpectedXJSClosingTag: 'Expected corresponding XJS closing tag for %0',
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278 | AdjacentXJSElements: 'Adjacent XJS elements must be wrapped in an enclosing tag'
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279 | };
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280 |
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281 |
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282 | Regex = {
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283 | NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
|
284 | NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]')
|
285 | };
|
286 |
|
287 |
|
288 |
|
289 |
|
290 |
|
291 |
|
292 | function assert(condition, message) {
|
293 | if (!condition) {
|
294 | throw new Error('ASSERT: ' + message);
|
295 | }
|
296 | }
|
297 |
|
298 | function isDecimalDigit(ch) {
|
299 | return (ch >= 48 && ch <= 57);
|
300 | }
|
301 |
|
302 | function isHexDigit(ch) {
|
303 | return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
|
304 | }
|
305 |
|
306 | function isOctalDigit(ch) {
|
307 | return '01234567'.indexOf(ch) >= 0;
|
308 | }
|
309 |
|
310 |
|
311 |
|
312 |
|
313 | function isWhiteSpace(ch) {
|
314 | return (ch === 32) ||
|
315 | (ch === 9) ||
|
316 | (ch === 0xB) ||
|
317 | (ch === 0xC) ||
|
318 | (ch === 0xA0) ||
|
319 | (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
|
320 | }
|
321 |
|
322 |
|
323 |
|
324 | function isLineTerminator(ch) {
|
325 | return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
|
326 | }
|
327 |
|
328 |
|
329 |
|
330 | function isIdentifierStart(ch) {
|
331 | return (ch === 36) || (ch === 95) ||
|
332 | (ch >= 65 && ch <= 90) ||
|
333 | (ch >= 97 && ch <= 122) ||
|
334 | (ch === 92) ||
|
335 | ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
|
336 | }
|
337 |
|
338 | function isIdentifierPart(ch) {
|
339 | return (ch === 36) || (ch === 95) ||
|
340 | (ch >= 65 && ch <= 90) ||
|
341 | (ch >= 97 && ch <= 122) ||
|
342 | (ch >= 48 && ch <= 57) ||
|
343 | (ch === 92) ||
|
344 | ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
|
345 | }
|
346 |
|
347 |
|
348 |
|
349 | function isFutureReservedWord(id) {
|
350 | switch (id) {
|
351 | case 'class':
|
352 | case 'enum':
|
353 | case 'export':
|
354 | case 'extends':
|
355 | case 'import':
|
356 | case 'super':
|
357 | return true;
|
358 | default:
|
359 | return false;
|
360 | }
|
361 | }
|
362 |
|
363 | function isStrictModeReservedWord(id) {
|
364 | switch (id) {
|
365 | case 'implements':
|
366 | case 'interface':
|
367 | case 'package':
|
368 | case 'private':
|
369 | case 'protected':
|
370 | case 'public':
|
371 | case 'static':
|
372 | case 'yield':
|
373 | case 'let':
|
374 | return true;
|
375 | default:
|
376 | return false;
|
377 | }
|
378 | }
|
379 |
|
380 | function isRestrictedWord(id) {
|
381 | return id === 'eval' || id === 'arguments';
|
382 | }
|
383 |
|
384 |
|
385 |
|
386 | function isKeyword(id) {
|
387 | if (strict && isStrictModeReservedWord(id)) {
|
388 | return true;
|
389 | }
|
390 |
|
391 |
|
392 |
|
393 |
|
394 |
|
395 |
|
396 | switch (id.length) {
|
397 | case 2:
|
398 | return (id === 'if') || (id === 'in') || (id === 'do');
|
399 | case 3:
|
400 | return (id === 'var') || (id === 'for') || (id === 'new') ||
|
401 | (id === 'try') || (id === 'let');
|
402 | case 4:
|
403 | return (id === 'this') || (id === 'else') || (id === 'case') ||
|
404 | (id === 'void') || (id === 'with') || (id === 'enum');
|
405 | case 5:
|
406 | return (id === 'while') || (id === 'break') || (id === 'catch') ||
|
407 | (id === 'throw') || (id === 'const') ||
|
408 | (id === 'class') || (id === 'super');
|
409 | case 6:
|
410 | return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
|
411 | (id === 'switch') || (id === 'export') || (id === 'import');
|
412 | case 7:
|
413 | return (id === 'default') || (id === 'finally') || (id === 'extends');
|
414 | case 8:
|
415 | return (id === 'function') || (id === 'continue') || (id === 'debugger');
|
416 | case 10:
|
417 | return (id === 'instanceof');
|
418 | default:
|
419 | return false;
|
420 | }
|
421 | }
|
422 |
|
423 |
|
424 |
|
425 | function skipComment() {
|
426 | var ch, blockComment, lineComment;
|
427 |
|
428 | blockComment = false;
|
429 | lineComment = false;
|
430 |
|
431 | while (index < length) {
|
432 | ch = source.charCodeAt(index);
|
433 |
|
434 | if (lineComment) {
|
435 | ++index;
|
436 | if (isLineTerminator(ch)) {
|
437 | lineComment = false;
|
438 | if (ch === 13 && source.charCodeAt(index) === 10) {
|
439 | ++index;
|
440 | }
|
441 | ++lineNumber;
|
442 | lineStart = index;
|
443 | }
|
444 | } else if (blockComment) {
|
445 | if (isLineTerminator(ch)) {
|
446 | if (ch === 13 && source.charCodeAt(index + 1) === 10) {
|
447 | ++index;
|
448 | }
|
449 | ++lineNumber;
|
450 | ++index;
|
451 | lineStart = index;
|
452 | if (index >= length) {
|
453 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
454 | }
|
455 | } else {
|
456 | ch = source.charCodeAt(index++);
|
457 | if (index >= length) {
|
458 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
459 | }
|
460 |
|
461 | if (ch === 42) {
|
462 | ch = source.charCodeAt(index);
|
463 | if (ch === 47) {
|
464 | ++index;
|
465 | blockComment = false;
|
466 | }
|
467 | }
|
468 | }
|
469 | } else if (ch === 47) {
|
470 | ch = source.charCodeAt(index + 1);
|
471 |
|
472 | if (ch === 47) {
|
473 | index += 2;
|
474 | lineComment = true;
|
475 | } else if (ch === 42) {
|
476 |
|
477 | index += 2;
|
478 | blockComment = true;
|
479 | if (index >= length) {
|
480 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
481 | }
|
482 | } else {
|
483 | break;
|
484 | }
|
485 | } else if (isWhiteSpace(ch)) {
|
486 | ++index;
|
487 | } else if (isLineTerminator(ch)) {
|
488 | ++index;
|
489 | if (ch === 13 && source.charCodeAt(index) === 10) {
|
490 | ++index;
|
491 | }
|
492 | ++lineNumber;
|
493 | lineStart = index;
|
494 | } else {
|
495 | break;
|
496 | }
|
497 | }
|
498 | }
|
499 |
|
500 | function scanHexEscape(prefix) {
|
501 | var i, len, ch, code = 0;
|
502 |
|
503 | len = (prefix === 'u') ? 4 : 2;
|
504 | for (i = 0; i < len; ++i) {
|
505 | if (index < length && isHexDigit(source[index])) {
|
506 | ch = source[index++];
|
507 | code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
|
508 | } else {
|
509 | return '';
|
510 | }
|
511 | }
|
512 | return String.fromCharCode(code);
|
513 | }
|
514 |
|
515 | function scanUnicodeCodePointEscape() {
|
516 | var ch, code, cu1, cu2;
|
517 |
|
518 | ch = source[index];
|
519 | code = 0;
|
520 |
|
521 |
|
522 | if (ch === '}') {
|
523 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
524 | }
|
525 |
|
526 | while (index < length) {
|
527 | ch = source[index++];
|
528 | if (!isHexDigit(ch)) {
|
529 | break;
|
530 | }
|
531 | code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
|
532 | }
|
533 |
|
534 | if (code > 0x10FFFF || ch !== '}') {
|
535 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
536 | }
|
537 |
|
538 |
|
539 | if (code <= 0xFFFF) {
|
540 | return String.fromCharCode(code);
|
541 | }
|
542 | cu1 = ((code - 0x10000) >> 10) + 0xD800;
|
543 | cu2 = ((code - 0x10000) & 1023) + 0xDC00;
|
544 | return String.fromCharCode(cu1, cu2);
|
545 | }
|
546 |
|
547 | function getEscapedIdentifier() {
|
548 | var ch, id;
|
549 |
|
550 | ch = source.charCodeAt(index++);
|
551 | id = String.fromCharCode(ch);
|
552 |
|
553 |
|
554 | if (ch === 92) {
|
555 | if (source.charCodeAt(index) !== 117) {
|
556 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
557 | }
|
558 | ++index;
|
559 | ch = scanHexEscape('u');
|
560 | if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
|
561 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
562 | }
|
563 | id = ch;
|
564 | }
|
565 |
|
566 | while (index < length) {
|
567 | ch = source.charCodeAt(index);
|
568 | if (!isIdentifierPart(ch)) {
|
569 | break;
|
570 | }
|
571 | ++index;
|
572 | id += String.fromCharCode(ch);
|
573 |
|
574 |
|
575 | if (ch === 92) {
|
576 | id = id.substr(0, id.length - 1);
|
577 | if (source.charCodeAt(index) !== 117) {
|
578 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
579 | }
|
580 | ++index;
|
581 | ch = scanHexEscape('u');
|
582 | if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
|
583 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
584 | }
|
585 | id += ch;
|
586 | }
|
587 | }
|
588 |
|
589 | return id;
|
590 | }
|
591 |
|
592 | function getIdentifier() {
|
593 | var start, ch;
|
594 |
|
595 | start = index++;
|
596 | while (index < length) {
|
597 | ch = source.charCodeAt(index);
|
598 | if (ch === 92) {
|
599 |
|
600 | index = start;
|
601 | return getEscapedIdentifier();
|
602 | }
|
603 | if (isIdentifierPart(ch)) {
|
604 | ++index;
|
605 | } else {
|
606 | break;
|
607 | }
|
608 | }
|
609 |
|
610 | return source.slice(start, index);
|
611 | }
|
612 |
|
613 | function scanIdentifier() {
|
614 | var start, id, type;
|
615 |
|
616 | start = index;
|
617 |
|
618 |
|
619 | id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();
|
620 |
|
621 |
|
622 |
|
623 | if (id.length === 1) {
|
624 | type = Token.Identifier;
|
625 | } else if (isKeyword(id)) {
|
626 | type = Token.Keyword;
|
627 | } else if (id === 'null') {
|
628 | type = Token.NullLiteral;
|
629 | } else if (id === 'true' || id === 'false') {
|
630 | type = Token.BooleanLiteral;
|
631 | } else {
|
632 | type = Token.Identifier;
|
633 | }
|
634 |
|
635 | return {
|
636 | type: type,
|
637 | value: id,
|
638 | lineNumber: lineNumber,
|
639 | lineStart: lineStart,
|
640 | range: [start, index]
|
641 | };
|
642 | }
|
643 |
|
644 |
|
645 |
|
646 |
|
647 | function scanPunctuator() {
|
648 | var start = index,
|
649 | code = source.charCodeAt(index),
|
650 | code2,
|
651 | ch1 = source[index],
|
652 | ch2,
|
653 | ch3,
|
654 | ch4;
|
655 |
|
656 | switch (code) {
|
657 |
|
658 | case 40:
|
659 | case 41:
|
660 | case 59:
|
661 | case 44:
|
662 | case 123:
|
663 | case 125:
|
664 | case 91:
|
665 | case 93:
|
666 | case 58:
|
667 | case 63:
|
668 | case 126:
|
669 | ++index;
|
670 | if (extra.tokenize) {
|
671 | if (code === 40) {
|
672 | extra.openParenToken = extra.tokens.length;
|
673 | } else if (code === 123) {
|
674 | extra.openCurlyToken = extra.tokens.length;
|
675 | }
|
676 | }
|
677 | return {
|
678 | type: Token.Punctuator,
|
679 | value: String.fromCharCode(code),
|
680 | lineNumber: lineNumber,
|
681 | lineStart: lineStart,
|
682 | range: [start, index]
|
683 | };
|
684 |
|
685 | default:
|
686 | code2 = source.charCodeAt(index + 1);
|
687 |
|
688 |
|
689 | if (code2 === 61) {
|
690 | switch (code) {
|
691 | case 37:
|
692 | case 38:
|
693 | case 42:
|
694 | case 43:
|
695 | case 45:
|
696 | case 47:
|
697 | case 60:
|
698 | case 62:
|
699 | case 94:
|
700 | case 124:
|
701 | index += 2;
|
702 | return {
|
703 | type: Token.Punctuator,
|
704 | value: String.fromCharCode(code) + String.fromCharCode(code2),
|
705 | lineNumber: lineNumber,
|
706 | lineStart: lineStart,
|
707 | range: [start, index]
|
708 | };
|
709 |
|
710 | case 33:
|
711 | case 61:
|
712 | index += 2;
|
713 |
|
714 |
|
715 | if (source.charCodeAt(index) === 61) {
|
716 | ++index;
|
717 | }
|
718 | return {
|
719 | type: Token.Punctuator,
|
720 | value: source.slice(start, index),
|
721 | lineNumber: lineNumber,
|
722 | lineStart: lineStart,
|
723 | range: [start, index]
|
724 | };
|
725 | default:
|
726 | break;
|
727 | }
|
728 | }
|
729 | break;
|
730 | }
|
731 |
|
732 |
|
733 |
|
734 | ch2 = source[index + 1];
|
735 | ch3 = source[index + 2];
|
736 | ch4 = source[index + 3];
|
737 |
|
738 |
|
739 |
|
740 | if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
|
741 | if (ch4 === '=') {
|
742 | index += 4;
|
743 | return {
|
744 | type: Token.Punctuator,
|
745 | value: '>>>=',
|
746 | lineNumber: lineNumber,
|
747 | lineStart: lineStart,
|
748 | range: [start, index]
|
749 | };
|
750 | }
|
751 | }
|
752 |
|
753 |
|
754 |
|
755 | if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
|
756 | index += 3;
|
757 | return {
|
758 | type: Token.Punctuator,
|
759 | value: '>>>',
|
760 | lineNumber: lineNumber,
|
761 | lineStart: lineStart,
|
762 | range: [start, index]
|
763 | };
|
764 | }
|
765 |
|
766 | if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
|
767 | index += 3;
|
768 | return {
|
769 | type: Token.Punctuator,
|
770 | value: '<<=',
|
771 | lineNumber: lineNumber,
|
772 | lineStart: lineStart,
|
773 | range: [start, index]
|
774 | };
|
775 | }
|
776 |
|
777 | if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
|
778 | index += 3;
|
779 | return {
|
780 | type: Token.Punctuator,
|
781 | value: '>>=',
|
782 | lineNumber: lineNumber,
|
783 | lineStart: lineStart,
|
784 | range: [start, index]
|
785 | };
|
786 | }
|
787 |
|
788 | if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
|
789 | index += 3;
|
790 | return {
|
791 | type: Token.Punctuator,
|
792 | value: '...',
|
793 | lineNumber: lineNumber,
|
794 | lineStart: lineStart,
|
795 | range: [start, index]
|
796 | };
|
797 | }
|
798 |
|
799 |
|
800 |
|
801 | if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
|
802 | index += 2;
|
803 | return {
|
804 | type: Token.Punctuator,
|
805 | value: ch1 + ch2,
|
806 | lineNumber: lineNumber,
|
807 | lineStart: lineStart,
|
808 | range: [start, index]
|
809 | };
|
810 | }
|
811 |
|
812 | if (ch1 === '=' && ch2 === '>') {
|
813 | index += 2;
|
814 | return {
|
815 | type: Token.Punctuator,
|
816 | value: '=>',
|
817 | lineNumber: lineNumber,
|
818 | lineStart: lineStart,
|
819 | range: [start, index]
|
820 | };
|
821 | }
|
822 |
|
823 | if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
|
824 | ++index;
|
825 | return {
|
826 | type: Token.Punctuator,
|
827 | value: ch1,
|
828 | lineNumber: lineNumber,
|
829 | lineStart: lineStart,
|
830 | range: [start, index]
|
831 | };
|
832 | }
|
833 |
|
834 | if (ch1 === '.') {
|
835 | ++index;
|
836 | return {
|
837 | type: Token.Punctuator,
|
838 | value: ch1,
|
839 | lineNumber: lineNumber,
|
840 | lineStart: lineStart,
|
841 | range: [start, index]
|
842 | };
|
843 | }
|
844 |
|
845 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
846 | }
|
847 |
|
848 |
|
849 |
|
850 | function scanHexLiteral(start) {
|
851 | var number = '';
|
852 |
|
853 | while (index < length) {
|
854 | if (!isHexDigit(source[index])) {
|
855 | break;
|
856 | }
|
857 | number += source[index++];
|
858 | }
|
859 |
|
860 | if (number.length === 0) {
|
861 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
862 | }
|
863 |
|
864 | if (isIdentifierStart(source.charCodeAt(index))) {
|
865 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
866 | }
|
867 |
|
868 | return {
|
869 | type: Token.NumericLiteral,
|
870 | value: parseInt('0x' + number, 16),
|
871 | lineNumber: lineNumber,
|
872 | lineStart: lineStart,
|
873 | range: [start, index]
|
874 | };
|
875 | }
|
876 |
|
877 | function scanOctalLiteral(prefix, start) {
|
878 | var number, octal;
|
879 |
|
880 | if (isOctalDigit(prefix)) {
|
881 | octal = true;
|
882 | number = '0' + source[index++];
|
883 | } else {
|
884 | octal = false;
|
885 | ++index;
|
886 | number = '';
|
887 | }
|
888 |
|
889 | while (index < length) {
|
890 | if (!isOctalDigit(source[index])) {
|
891 | break;
|
892 | }
|
893 | number += source[index++];
|
894 | }
|
895 |
|
896 | if (!octal && number.length === 0) {
|
897 |
|
898 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
899 | }
|
900 |
|
901 | if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
|
902 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
903 | }
|
904 |
|
905 | return {
|
906 | type: Token.NumericLiteral,
|
907 | value: parseInt(number, 8),
|
908 | octal: octal,
|
909 | lineNumber: lineNumber,
|
910 | lineStart: lineStart,
|
911 | range: [start, index]
|
912 | };
|
913 | }
|
914 |
|
915 | function scanNumericLiteral() {
|
916 | var number, start, ch, octal;
|
917 |
|
918 | ch = source[index];
|
919 | assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
|
920 | 'Numeric literal must start with a decimal digit or a decimal point');
|
921 |
|
922 | start = index;
|
923 | number = '';
|
924 | if (ch !== '.') {
|
925 | number = source[index++];
|
926 | ch = source[index];
|
927 |
|
928 |
|
929 |
|
930 |
|
931 |
|
932 | if (number === '0') {
|
933 | if (ch === 'x' || ch === 'X') {
|
934 | ++index;
|
935 | return scanHexLiteral(start);
|
936 | }
|
937 | if (ch === 'b' || ch === 'B') {
|
938 | ++index;
|
939 | number = '';
|
940 |
|
941 | while (index < length) {
|
942 | ch = source[index];
|
943 | if (ch !== '0' && ch !== '1') {
|
944 | break;
|
945 | }
|
946 | number += source[index++];
|
947 | }
|
948 |
|
949 | if (number.length === 0) {
|
950 |
|
951 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
952 | }
|
953 |
|
954 | if (index < length) {
|
955 | ch = source.charCodeAt(index);
|
956 | if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
|
957 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
958 | }
|
959 | }
|
960 | return {
|
961 | type: Token.NumericLiteral,
|
962 | value: parseInt(number, 2),
|
963 | lineNumber: lineNumber,
|
964 | lineStart: lineStart,
|
965 | range: [start, index]
|
966 | };
|
967 | }
|
968 | if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
|
969 | return scanOctalLiteral(ch, start);
|
970 | }
|
971 |
|
972 | if (ch && isDecimalDigit(ch.charCodeAt(0))) {
|
973 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
974 | }
|
975 | }
|
976 |
|
977 | while (isDecimalDigit(source.charCodeAt(index))) {
|
978 | number += source[index++];
|
979 | }
|
980 | ch = source[index];
|
981 | }
|
982 |
|
983 | if (ch === '.') {
|
984 | number += source[index++];
|
985 | while (isDecimalDigit(source.charCodeAt(index))) {
|
986 | number += source[index++];
|
987 | }
|
988 | ch = source[index];
|
989 | }
|
990 |
|
991 | if (ch === 'e' || ch === 'E') {
|
992 | number += source[index++];
|
993 |
|
994 | ch = source[index];
|
995 | if (ch === '+' || ch === '-') {
|
996 | number += source[index++];
|
997 | }
|
998 | if (isDecimalDigit(source.charCodeAt(index))) {
|
999 | while (isDecimalDigit(source.charCodeAt(index))) {
|
1000 | number += source[index++];
|
1001 | }
|
1002 | } else {
|
1003 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
1004 | }
|
1005 | }
|
1006 |
|
1007 | if (isIdentifierStart(source.charCodeAt(index))) {
|
1008 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
1009 | }
|
1010 |
|
1011 | return {
|
1012 | type: Token.NumericLiteral,
|
1013 | value: parseFloat(number),
|
1014 | lineNumber: lineNumber,
|
1015 | lineStart: lineStart,
|
1016 | range: [start, index]
|
1017 | };
|
1018 | }
|
1019 |
|
1020 |
|
1021 |
|
1022 | function scanStringLiteral() {
|
1023 | var str = '', quote, start, ch, code, unescaped, restore, octal = false;
|
1024 |
|
1025 | quote = source[index];
|
1026 | assert((quote === '\'' || quote === '"'),
|
1027 | 'String literal must starts with a quote');
|
1028 |
|
1029 | start = index;
|
1030 | ++index;
|
1031 |
|
1032 | while (index < length) {
|
1033 | ch = source[index++];
|
1034 |
|
1035 | if (ch === quote) {
|
1036 | quote = '';
|
1037 | break;
|
1038 | } else if (ch === '\\') {
|
1039 | ch = source[index++];
|
1040 | if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
|
1041 | switch (ch) {
|
1042 | case 'n':
|
1043 | str += '\n';
|
1044 | break;
|
1045 | case 'r':
|
1046 | str += '\r';
|
1047 | break;
|
1048 | case 't':
|
1049 | str += '\t';
|
1050 | break;
|
1051 | case 'u':
|
1052 | case 'x':
|
1053 | if (source[index] === '{') {
|
1054 | ++index;
|
1055 | str += scanUnicodeCodePointEscape();
|
1056 | } else {
|
1057 | restore = index;
|
1058 | unescaped = scanHexEscape(ch);
|
1059 | if (unescaped) {
|
1060 | str += unescaped;
|
1061 | } else {
|
1062 | index = restore;
|
1063 | str += ch;
|
1064 | }
|
1065 | }
|
1066 | break;
|
1067 | case 'b':
|
1068 | str += '\b';
|
1069 | break;
|
1070 | case 'f':
|
1071 | str += '\f';
|
1072 | break;
|
1073 | case 'v':
|
1074 | str += '\x0B';
|
1075 | break;
|
1076 |
|
1077 | default:
|
1078 | if (isOctalDigit(ch)) {
|
1079 | code = '01234567'.indexOf(ch);
|
1080 |
|
1081 |
|
1082 | if (code !== 0) {
|
1083 | octal = true;
|
1084 | }
|
1085 |
|
1086 | if (index < length && isOctalDigit(source[index])) {
|
1087 | octal = true;
|
1088 | code = code * 8 + '01234567'.indexOf(source[index++]);
|
1089 |
|
1090 |
|
1091 |
|
1092 | if ('0123'.indexOf(ch) >= 0 &&
|
1093 | index < length &&
|
1094 | isOctalDigit(source[index])) {
|
1095 | code = code * 8 + '01234567'.indexOf(source[index++]);
|
1096 | }
|
1097 | }
|
1098 | str += String.fromCharCode(code);
|
1099 | } else {
|
1100 | str += ch;
|
1101 | }
|
1102 | break;
|
1103 | }
|
1104 | } else {
|
1105 | ++lineNumber;
|
1106 | if (ch === '\r' && source[index] === '\n') {
|
1107 | ++index;
|
1108 | }
|
1109 | }
|
1110 | } else if (isLineTerminator(ch.charCodeAt(0))) {
|
1111 | break;
|
1112 | } else {
|
1113 | str += ch;
|
1114 | }
|
1115 | }
|
1116 |
|
1117 | if (quote !== '') {
|
1118 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
1119 | }
|
1120 |
|
1121 | return {
|
1122 | type: Token.StringLiteral,
|
1123 | value: str,
|
1124 | octal: octal,
|
1125 | lineNumber: lineNumber,
|
1126 | lineStart: lineStart,
|
1127 | range: [start, index]
|
1128 | };
|
1129 | }
|
1130 |
|
1131 | function scanTemplate() {
|
1132 | var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;
|
1133 |
|
1134 | terminated = false;
|
1135 | tail = false;
|
1136 | start = index;
|
1137 |
|
1138 | ++index;
|
1139 |
|
1140 | while (index < length) {
|
1141 | ch = source[index++];
|
1142 | if (ch === '`') {
|
1143 | tail = true;
|
1144 | terminated = true;
|
1145 | break;
|
1146 | } else if (ch === '$') {
|
1147 | if (source[index] === '{') {
|
1148 | ++index;
|
1149 | terminated = true;
|
1150 | break;
|
1151 | }
|
1152 | cooked += ch;
|
1153 | } else if (ch === '\\') {
|
1154 | ch = source[index++];
|
1155 | if (!isLineTerminator(ch.charCodeAt(0))) {
|
1156 | switch (ch) {
|
1157 | case 'n':
|
1158 | cooked += '\n';
|
1159 | break;
|
1160 | case 'r':
|
1161 | cooked += '\r';
|
1162 | break;
|
1163 | case 't':
|
1164 | cooked += '\t';
|
1165 | break;
|
1166 | case 'u':
|
1167 | case 'x':
|
1168 | if (source[index] === '{') {
|
1169 | ++index;
|
1170 | cooked += scanUnicodeCodePointEscape();
|
1171 | } else {
|
1172 | restore = index;
|
1173 | unescaped = scanHexEscape(ch);
|
1174 | if (unescaped) {
|
1175 | cooked += unescaped;
|
1176 | } else {
|
1177 | index = restore;
|
1178 | cooked += ch;
|
1179 | }
|
1180 | }
|
1181 | break;
|
1182 | case 'b':
|
1183 | cooked += '\b';
|
1184 | break;
|
1185 | case 'f':
|
1186 | cooked += '\f';
|
1187 | break;
|
1188 | case 'v':
|
1189 | cooked += '\v';
|
1190 | break;
|
1191 |
|
1192 | default:
|
1193 | if (isOctalDigit(ch)) {
|
1194 | code = '01234567'.indexOf(ch);
|
1195 |
|
1196 |
|
1197 | if (code !== 0) {
|
1198 | octal = true;
|
1199 | }
|
1200 |
|
1201 | if (index < length && isOctalDigit(source[index])) {
|
1202 | octal = true;
|
1203 | code = code * 8 + '01234567'.indexOf(source[index++]);
|
1204 |
|
1205 |
|
1206 |
|
1207 | if ('0123'.indexOf(ch) >= 0 &&
|
1208 | index < length &&
|
1209 | isOctalDigit(source[index])) {
|
1210 | code = code * 8 + '01234567'.indexOf(source[index++]);
|
1211 | }
|
1212 | }
|
1213 | cooked += String.fromCharCode(code);
|
1214 | } else {
|
1215 | cooked += ch;
|
1216 | }
|
1217 | break;
|
1218 | }
|
1219 | } else {
|
1220 | ++lineNumber;
|
1221 | if (ch === '\r' && source[index] === '\n') {
|
1222 | ++index;
|
1223 | }
|
1224 | }
|
1225 | } else if (isLineTerminator(ch.charCodeAt(0))) {
|
1226 | ++lineNumber;
|
1227 | if (ch === '\r' && source[index] === '\n') {
|
1228 | ++index;
|
1229 | }
|
1230 | cooked += '\n';
|
1231 | } else {
|
1232 | cooked += ch;
|
1233 | }
|
1234 | }
|
1235 |
|
1236 | if (!terminated) {
|
1237 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
1238 | }
|
1239 |
|
1240 | return {
|
1241 | type: Token.Template,
|
1242 | value: {
|
1243 | cooked: cooked,
|
1244 | raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
|
1245 | },
|
1246 | tail: tail,
|
1247 | octal: octal,
|
1248 | lineNumber: lineNumber,
|
1249 | lineStart: lineStart,
|
1250 | range: [start, index]
|
1251 | };
|
1252 | }
|
1253 |
|
1254 | function scanTemplateElement(option) {
|
1255 | var startsWith, template;
|
1256 |
|
1257 | lookahead = null;
|
1258 | skipComment();
|
1259 |
|
1260 | startsWith = (option.head) ? '`' : '}';
|
1261 |
|
1262 | if (source[index] !== startsWith) {
|
1263 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
1264 | }
|
1265 |
|
1266 | template = scanTemplate();
|
1267 |
|
1268 | peek();
|
1269 |
|
1270 | return template;
|
1271 | }
|
1272 |
|
1273 | function scanRegExp() {
|
1274 | var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false;
|
1275 |
|
1276 | lookahead = null;
|
1277 | skipComment();
|
1278 |
|
1279 | start = index;
|
1280 | ch = source[index];
|
1281 | assert(ch === '/', 'Regular expression literal must start with a slash');
|
1282 | str = source[index++];
|
1283 |
|
1284 | while (index < length) {
|
1285 | ch = source[index++];
|
1286 | str += ch;
|
1287 | if (classMarker) {
|
1288 | if (ch === ']') {
|
1289 | classMarker = false;
|
1290 | }
|
1291 | } else {
|
1292 | if (ch === '\\') {
|
1293 | ch = source[index++];
|
1294 |
|
1295 | if (isLineTerminator(ch.charCodeAt(0))) {
|
1296 | throwError({}, Messages.UnterminatedRegExp);
|
1297 | }
|
1298 | str += ch;
|
1299 | } else if (ch === '/') {
|
1300 | terminated = true;
|
1301 | break;
|
1302 | } else if (ch === '[') {
|
1303 | classMarker = true;
|
1304 | } else if (isLineTerminator(ch.charCodeAt(0))) {
|
1305 | throwError({}, Messages.UnterminatedRegExp);
|
1306 | }
|
1307 | }
|
1308 | }
|
1309 |
|
1310 | if (!terminated) {
|
1311 | throwError({}, Messages.UnterminatedRegExp);
|
1312 | }
|
1313 |
|
1314 |
|
1315 | pattern = str.substr(1, str.length - 2);
|
1316 |
|
1317 | flags = '';
|
1318 | while (index < length) {
|
1319 | ch = source[index];
|
1320 | if (!isIdentifierPart(ch.charCodeAt(0))) {
|
1321 | break;
|
1322 | }
|
1323 |
|
1324 | ++index;
|
1325 | if (ch === '\\' && index < length) {
|
1326 | ch = source[index];
|
1327 | if (ch === 'u') {
|
1328 | ++index;
|
1329 | restore = index;
|
1330 | ch = scanHexEscape('u');
|
1331 | if (ch) {
|
1332 | flags += ch;
|
1333 | for (str += '\\u'; restore < index; ++restore) {
|
1334 | str += source[restore];
|
1335 | }
|
1336 | } else {
|
1337 | index = restore;
|
1338 | flags += 'u';
|
1339 | str += '\\u';
|
1340 | }
|
1341 | } else {
|
1342 | str += '\\';
|
1343 | }
|
1344 | } else {
|
1345 | flags += ch;
|
1346 | str += ch;
|
1347 | }
|
1348 | }
|
1349 |
|
1350 | try {
|
1351 | value = new RegExp(pattern, flags);
|
1352 | } catch (e) {
|
1353 | throwError({}, Messages.InvalidRegExp);
|
1354 | }
|
1355 |
|
1356 | peek();
|
1357 |
|
1358 |
|
1359 | if (extra.tokenize) {
|
1360 | return {
|
1361 | type: Token.RegularExpression,
|
1362 | value: value,
|
1363 | lineNumber: lineNumber,
|
1364 | lineStart: lineStart,
|
1365 | range: [start, index]
|
1366 | };
|
1367 | }
|
1368 | return {
|
1369 | literal: str,
|
1370 | value: value,
|
1371 | range: [start, index]
|
1372 | };
|
1373 | }
|
1374 |
|
1375 | function isIdentifierName(token) {
|
1376 | return token.type === Token.Identifier ||
|
1377 | token.type === Token.Keyword ||
|
1378 | token.type === Token.BooleanLiteral ||
|
1379 | token.type === Token.NullLiteral;
|
1380 | }
|
1381 |
|
1382 | function advanceSlash() {
|
1383 | var prevToken,
|
1384 | checkToken;
|
1385 |
|
1386 |
|
1387 | prevToken = extra.tokens[extra.tokens.length - 1];
|
1388 | if (!prevToken) {
|
1389 |
|
1390 | return scanRegExp();
|
1391 | }
|
1392 | if (prevToken.type === 'Punctuator') {
|
1393 | if (prevToken.value === ')') {
|
1394 | checkToken = extra.tokens[extra.openParenToken - 1];
|
1395 | if (checkToken &&
|
1396 | checkToken.type === 'Keyword' &&
|
1397 | (checkToken.value === 'if' ||
|
1398 | checkToken.value === 'while' ||
|
1399 | checkToken.value === 'for' ||
|
1400 | checkToken.value === 'with')) {
|
1401 | return scanRegExp();
|
1402 | }
|
1403 | return scanPunctuator();
|
1404 | }
|
1405 | if (prevToken.value === '}') {
|
1406 |
|
1407 |
|
1408 | if (extra.tokens[extra.openCurlyToken - 3] &&
|
1409 | extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
|
1410 |
|
1411 | checkToken = extra.tokens[extra.openCurlyToken - 4];
|
1412 | if (!checkToken) {
|
1413 | return scanPunctuator();
|
1414 | }
|
1415 | } else if (extra.tokens[extra.openCurlyToken - 4] &&
|
1416 | extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
|
1417 |
|
1418 | checkToken = extra.tokens[extra.openCurlyToken - 5];
|
1419 | if (!checkToken) {
|
1420 | return scanRegExp();
|
1421 | }
|
1422 | } else {
|
1423 | return scanPunctuator();
|
1424 | }
|
1425 |
|
1426 |
|
1427 | if (FnExprTokens.indexOf(checkToken.value) >= 0) {
|
1428 |
|
1429 | return scanPunctuator();
|
1430 | }
|
1431 |
|
1432 | return scanRegExp();
|
1433 | }
|
1434 | return scanRegExp();
|
1435 | }
|
1436 | if (prevToken.type === 'Keyword') {
|
1437 | return scanRegExp();
|
1438 | }
|
1439 | return scanPunctuator();
|
1440 | }
|
1441 |
|
1442 | function advance() {
|
1443 | var ch;
|
1444 |
|
1445 | if (!state.inXJSChild) {
|
1446 | skipComment();
|
1447 | }
|
1448 |
|
1449 | if (index >= length) {
|
1450 | return {
|
1451 | type: Token.EOF,
|
1452 | lineNumber: lineNumber,
|
1453 | lineStart: lineStart,
|
1454 | range: [index, index]
|
1455 | };
|
1456 | }
|
1457 |
|
1458 | if (state.inXJSChild) {
|
1459 | return advanceXJSChild();
|
1460 | }
|
1461 |
|
1462 | ch = source.charCodeAt(index);
|
1463 |
|
1464 |
|
1465 | if (ch === 40 || ch === 41 || ch === 58) {
|
1466 | return scanPunctuator();
|
1467 | }
|
1468 |
|
1469 |
|
1470 | if (ch === 39 || ch === 34) {
|
1471 | if (state.inXJSTag) {
|
1472 | return scanXJSStringLiteral();
|
1473 | }
|
1474 | return scanStringLiteral();
|
1475 | }
|
1476 |
|
1477 | if (state.inXJSTag && isXJSIdentifierStart(ch)) {
|
1478 | return scanXJSIdentifier();
|
1479 | }
|
1480 |
|
1481 | if (ch === 96) {
|
1482 | return scanTemplate();
|
1483 | }
|
1484 | if (isIdentifierStart(ch)) {
|
1485 | return scanIdentifier();
|
1486 | }
|
1487 |
|
1488 |
|
1489 |
|
1490 | if (ch === 46) {
|
1491 | if (isDecimalDigit(source.charCodeAt(index + 1))) {
|
1492 | return scanNumericLiteral();
|
1493 | }
|
1494 | return scanPunctuator();
|
1495 | }
|
1496 |
|
1497 | if (isDecimalDigit(ch)) {
|
1498 | return scanNumericLiteral();
|
1499 | }
|
1500 |
|
1501 |
|
1502 | if (extra.tokenize && ch === 47) {
|
1503 | return advanceSlash();
|
1504 | }
|
1505 |
|
1506 | return scanPunctuator();
|
1507 | }
|
1508 |
|
1509 | function lex() {
|
1510 | var token;
|
1511 |
|
1512 | token = lookahead;
|
1513 | index = token.range[1];
|
1514 | lineNumber = token.lineNumber;
|
1515 | lineStart = token.lineStart;
|
1516 |
|
1517 | lookahead = advance();
|
1518 |
|
1519 | index = token.range[1];
|
1520 | lineNumber = token.lineNumber;
|
1521 | lineStart = token.lineStart;
|
1522 |
|
1523 | return token;
|
1524 | }
|
1525 |
|
1526 | function peek() {
|
1527 | var pos, line, start;
|
1528 |
|
1529 | pos = index;
|
1530 | line = lineNumber;
|
1531 | start = lineStart;
|
1532 | lookahead = advance();
|
1533 | index = pos;
|
1534 | lineNumber = line;
|
1535 | lineStart = start;
|
1536 | }
|
1537 |
|
1538 | function lookahead2() {
|
1539 | var adv, pos, line, start, result;
|
1540 |
|
1541 |
|
1542 | adv = (typeof extra.advance === 'function') ? extra.advance : advance;
|
1543 |
|
1544 | pos = index;
|
1545 | line = lineNumber;
|
1546 | start = lineStart;
|
1547 |
|
1548 |
|
1549 | if (lookahead === null) {
|
1550 | lookahead = adv();
|
1551 | }
|
1552 | index = lookahead.range[1];
|
1553 | lineNumber = lookahead.lineNumber;
|
1554 | lineStart = lookahead.lineStart;
|
1555 |
|
1556 |
|
1557 | result = adv();
|
1558 | index = pos;
|
1559 | lineNumber = line;
|
1560 | lineStart = start;
|
1561 |
|
1562 | return result;
|
1563 | }
|
1564 |
|
1565 | function markerCreate() {
|
1566 | if (!extra.loc && !extra.range) {
|
1567 | return undefined;
|
1568 | }
|
1569 | skipComment();
|
1570 | return {offset: index, line: lineNumber, col: index - lineStart};
|
1571 | }
|
1572 |
|
1573 | function markerCreatePreserveWhitespace() {
|
1574 | if (!extra.loc && !extra.range) {
|
1575 | return undefined;
|
1576 | }
|
1577 | return {offset: index, line: lineNumber, col: index - lineStart};
|
1578 | }
|
1579 |
|
1580 | function markerApply(marker, node) {
|
1581 | if (extra.range) {
|
1582 | node.range = [marker.offset, index];
|
1583 | }
|
1584 | if (extra.loc) {
|
1585 | node.loc = {
|
1586 | start: {
|
1587 | line: marker.line,
|
1588 | column: marker.col
|
1589 | },
|
1590 | end: {
|
1591 | line: lineNumber,
|
1592 | column: index - lineStart
|
1593 | }
|
1594 | };
|
1595 | node = delegate.postProcess(node);
|
1596 | }
|
1597 | return node;
|
1598 | }
|
1599 |
|
1600 | SyntaxTreeDelegate = {
|
1601 |
|
1602 | name: 'SyntaxTree',
|
1603 |
|
1604 | postProcess: function (node) {
|
1605 | return node;
|
1606 | },
|
1607 |
|
1608 | createArrayExpression: function (elements) {
|
1609 | return {
|
1610 | type: Syntax.ArrayExpression,
|
1611 | elements: elements
|
1612 | };
|
1613 | },
|
1614 |
|
1615 | createAssignmentExpression: function (operator, left, right) {
|
1616 | return {
|
1617 | type: Syntax.AssignmentExpression,
|
1618 | operator: operator,
|
1619 | left: left,
|
1620 | right: right
|
1621 | };
|
1622 | },
|
1623 |
|
1624 | createBinaryExpression: function (operator, left, right) {
|
1625 | var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
|
1626 | Syntax.BinaryExpression;
|
1627 | return {
|
1628 | type: type,
|
1629 | operator: operator,
|
1630 | left: left,
|
1631 | right: right
|
1632 | };
|
1633 | },
|
1634 |
|
1635 | createBlockStatement: function (body) {
|
1636 | return {
|
1637 | type: Syntax.BlockStatement,
|
1638 | body: body
|
1639 | };
|
1640 | },
|
1641 |
|
1642 | createBreakStatement: function (label) {
|
1643 | return {
|
1644 | type: Syntax.BreakStatement,
|
1645 | label: label
|
1646 | };
|
1647 | },
|
1648 |
|
1649 | createCallExpression: function (callee, args) {
|
1650 | return {
|
1651 | type: Syntax.CallExpression,
|
1652 | callee: callee,
|
1653 | 'arguments': args
|
1654 | };
|
1655 | },
|
1656 |
|
1657 | createCatchClause: function (param, body) {
|
1658 | return {
|
1659 | type: Syntax.CatchClause,
|
1660 | param: param,
|
1661 | body: body
|
1662 | };
|
1663 | },
|
1664 |
|
1665 | createConditionalExpression: function (test, consequent, alternate) {
|
1666 | return {
|
1667 | type: Syntax.ConditionalExpression,
|
1668 | test: test,
|
1669 | consequent: consequent,
|
1670 | alternate: alternate
|
1671 | };
|
1672 | },
|
1673 |
|
1674 | createContinueStatement: function (label) {
|
1675 | return {
|
1676 | type: Syntax.ContinueStatement,
|
1677 | label: label
|
1678 | };
|
1679 | },
|
1680 |
|
1681 | createDebuggerStatement: function () {
|
1682 | return {
|
1683 | type: Syntax.DebuggerStatement
|
1684 | };
|
1685 | },
|
1686 |
|
1687 | createDoWhileStatement: function (body, test) {
|
1688 | return {
|
1689 | type: Syntax.DoWhileStatement,
|
1690 | body: body,
|
1691 | test: test
|
1692 | };
|
1693 | },
|
1694 |
|
1695 | createEmptyStatement: function () {
|
1696 | return {
|
1697 | type: Syntax.EmptyStatement
|
1698 | };
|
1699 | },
|
1700 |
|
1701 | createExpressionStatement: function (expression) {
|
1702 | return {
|
1703 | type: Syntax.ExpressionStatement,
|
1704 | expression: expression
|
1705 | };
|
1706 | },
|
1707 |
|
1708 | createForStatement: function (init, test, update, body) {
|
1709 | return {
|
1710 | type: Syntax.ForStatement,
|
1711 | init: init,
|
1712 | test: test,
|
1713 | update: update,
|
1714 | body: body
|
1715 | };
|
1716 | },
|
1717 |
|
1718 | createForInStatement: function (left, right, body) {
|
1719 | return {
|
1720 | type: Syntax.ForInStatement,
|
1721 | left: left,
|
1722 | right: right,
|
1723 | body: body,
|
1724 | each: false
|
1725 | };
|
1726 | },
|
1727 |
|
1728 | createForOfStatement: function (left, right, body) {
|
1729 | return {
|
1730 | type: Syntax.ForOfStatement,
|
1731 | left: left,
|
1732 | right: right,
|
1733 | body: body
|
1734 | };
|
1735 | },
|
1736 |
|
1737 | createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
|
1738 | returnType, parametricType) {
|
1739 | return {
|
1740 | type: Syntax.FunctionDeclaration,
|
1741 | id: id,
|
1742 | params: params,
|
1743 | defaults: defaults,
|
1744 | body: body,
|
1745 | rest: rest,
|
1746 | generator: generator,
|
1747 | expression: expression,
|
1748 | returnType: returnType,
|
1749 | parametricType: parametricType
|
1750 | };
|
1751 | },
|
1752 |
|
1753 | createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
|
1754 | returnType, parametricType) {
|
1755 | return {
|
1756 | type: Syntax.FunctionExpression,
|
1757 | id: id,
|
1758 | params: params,
|
1759 | defaults: defaults,
|
1760 | body: body,
|
1761 | rest: rest,
|
1762 | generator: generator,
|
1763 | expression: expression,
|
1764 | returnType: returnType,
|
1765 | parametricType: parametricType
|
1766 | };
|
1767 | },
|
1768 |
|
1769 | createIdentifier: function (name) {
|
1770 | return {
|
1771 | type: Syntax.Identifier,
|
1772 | name: name,
|
1773 |
|
1774 |
|
1775 |
|
1776 |
|
1777 |
|
1778 | typeAnnotation: undefined
|
1779 | };
|
1780 | },
|
1781 |
|
1782 | createTypeAnnotation: function (typeIdentifier, parametricType, params, returnType, nullable) {
|
1783 | return {
|
1784 | type: Syntax.TypeAnnotation,
|
1785 | id: typeIdentifier,
|
1786 | parametricType: parametricType,
|
1787 | params: params,
|
1788 | returnType: returnType,
|
1789 | nullable: nullable
|
1790 | };
|
1791 | },
|
1792 |
|
1793 | createParametricTypeAnnotation: function (parametricTypes) {
|
1794 | return {
|
1795 | type: Syntax.ParametricTypeAnnotation,
|
1796 | params: parametricTypes
|
1797 | };
|
1798 | },
|
1799 |
|
1800 | createVoidTypeAnnotation: function () {
|
1801 | return {
|
1802 | type: Syntax.VoidTypeAnnotation
|
1803 | };
|
1804 | },
|
1805 |
|
1806 | createObjectTypeAnnotation: function (properties) {
|
1807 | return {
|
1808 | type: Syntax.ObjectTypeAnnotation,
|
1809 | properties: properties
|
1810 | };
|
1811 | },
|
1812 |
|
1813 | createTypeAnnotatedIdentifier: function (identifier, annotation, isOptionalParam) {
|
1814 | return {
|
1815 | type: Syntax.TypeAnnotatedIdentifier,
|
1816 | id: identifier,
|
1817 | annotation: annotation
|
1818 | };
|
1819 | },
|
1820 |
|
1821 | createOptionalParameter: function (identifier) {
|
1822 | return {
|
1823 | type: Syntax.OptionalParameter,
|
1824 | id: identifier
|
1825 | };
|
1826 | },
|
1827 |
|
1828 | createXJSAttribute: function (name, value) {
|
1829 | return {
|
1830 | type: Syntax.XJSAttribute,
|
1831 | name: name,
|
1832 | value: value
|
1833 | };
|
1834 | },
|
1835 |
|
1836 | createXJSSpreadAttribute: function (argument) {
|
1837 | return {
|
1838 | type: Syntax.XJSSpreadAttribute,
|
1839 | argument: argument
|
1840 | };
|
1841 | },
|
1842 |
|
1843 | createXJSIdentifier: function (name) {
|
1844 | return {
|
1845 | type: Syntax.XJSIdentifier,
|
1846 | name: name
|
1847 | };
|
1848 | },
|
1849 |
|
1850 | createXJSNamespacedName: function (namespace, name) {
|
1851 | return {
|
1852 | type: Syntax.XJSNamespacedName,
|
1853 | namespace: namespace,
|
1854 | name: name
|
1855 | };
|
1856 | },
|
1857 |
|
1858 | createXJSMemberExpression: function (object, property) {
|
1859 | return {
|
1860 | type: Syntax.XJSMemberExpression,
|
1861 | object: object,
|
1862 | property: property
|
1863 | };
|
1864 | },
|
1865 |
|
1866 | createXJSElement: function (openingElement, closingElement, children) {
|
1867 | return {
|
1868 | type: Syntax.XJSElement,
|
1869 | openingElement: openingElement,
|
1870 | closingElement: closingElement,
|
1871 | children: children
|
1872 | };
|
1873 | },
|
1874 |
|
1875 | createXJSEmptyExpression: function () {
|
1876 | return {
|
1877 | type: Syntax.XJSEmptyExpression
|
1878 | };
|
1879 | },
|
1880 |
|
1881 | createXJSExpressionContainer: function (expression) {
|
1882 | return {
|
1883 | type: Syntax.XJSExpressionContainer,
|
1884 | expression: expression
|
1885 | };
|
1886 | },
|
1887 |
|
1888 | createXJSOpeningElement: function (name, attributes, selfClosing) {
|
1889 | return {
|
1890 | type: Syntax.XJSOpeningElement,
|
1891 | name: name,
|
1892 | selfClosing: selfClosing,
|
1893 | attributes: attributes
|
1894 | };
|
1895 | },
|
1896 |
|
1897 | createXJSClosingElement: function (name) {
|
1898 | return {
|
1899 | type: Syntax.XJSClosingElement,
|
1900 | name: name
|
1901 | };
|
1902 | },
|
1903 |
|
1904 | createIfStatement: function (test, consequent, alternate) {
|
1905 | return {
|
1906 | type: Syntax.IfStatement,
|
1907 | test: test,
|
1908 | consequent: consequent,
|
1909 | alternate: alternate
|
1910 | };
|
1911 | },
|
1912 |
|
1913 | createLabeledStatement: function (label, body) {
|
1914 | return {
|
1915 | type: Syntax.LabeledStatement,
|
1916 | label: label,
|
1917 | body: body
|
1918 | };
|
1919 | },
|
1920 |
|
1921 | createLiteral: function (token) {
|
1922 | return {
|
1923 | type: Syntax.Literal,
|
1924 | value: token.value,
|
1925 | raw: source.slice(token.range[0], token.range[1])
|
1926 | };
|
1927 | },
|
1928 |
|
1929 | createMemberExpression: function (accessor, object, property) {
|
1930 | return {
|
1931 | type: Syntax.MemberExpression,
|
1932 | computed: accessor === '[',
|
1933 | object: object,
|
1934 | property: property
|
1935 | };
|
1936 | },
|
1937 |
|
1938 | createNewExpression: function (callee, args) {
|
1939 | return {
|
1940 | type: Syntax.NewExpression,
|
1941 | callee: callee,
|
1942 | 'arguments': args
|
1943 | };
|
1944 | },
|
1945 |
|
1946 | createObjectExpression: function (properties) {
|
1947 | return {
|
1948 | type: Syntax.ObjectExpression,
|
1949 | properties: properties
|
1950 | };
|
1951 | },
|
1952 |
|
1953 | createPostfixExpression: function (operator, argument) {
|
1954 | return {
|
1955 | type: Syntax.UpdateExpression,
|
1956 | operator: operator,
|
1957 | argument: argument,
|
1958 | prefix: false
|
1959 | };
|
1960 | },
|
1961 |
|
1962 | createProgram: function (body) {
|
1963 | return {
|
1964 | type: Syntax.Program,
|
1965 | body: body
|
1966 | };
|
1967 | },
|
1968 |
|
1969 | createProperty: function (kind, key, value, method, shorthand, computed) {
|
1970 | return {
|
1971 | type: Syntax.Property,
|
1972 | key: key,
|
1973 | value: value,
|
1974 | kind: kind,
|
1975 | method: method,
|
1976 | shorthand: shorthand,
|
1977 | computed: computed
|
1978 | };
|
1979 | },
|
1980 |
|
1981 | createReturnStatement: function (argument) {
|
1982 | return {
|
1983 | type: Syntax.ReturnStatement,
|
1984 | argument: argument
|
1985 | };
|
1986 | },
|
1987 |
|
1988 | createSequenceExpression: function (expressions) {
|
1989 | return {
|
1990 | type: Syntax.SequenceExpression,
|
1991 | expressions: expressions
|
1992 | };
|
1993 | },
|
1994 |
|
1995 | createSwitchCase: function (test, consequent) {
|
1996 | return {
|
1997 | type: Syntax.SwitchCase,
|
1998 | test: test,
|
1999 | consequent: consequent
|
2000 | };
|
2001 | },
|
2002 |
|
2003 | createSwitchStatement: function (discriminant, cases) {
|
2004 | return {
|
2005 | type: Syntax.SwitchStatement,
|
2006 | discriminant: discriminant,
|
2007 | cases: cases
|
2008 | };
|
2009 | },
|
2010 |
|
2011 | createThisExpression: function () {
|
2012 | return {
|
2013 | type: Syntax.ThisExpression
|
2014 | };
|
2015 | },
|
2016 |
|
2017 | createThrowStatement: function (argument) {
|
2018 | return {
|
2019 | type: Syntax.ThrowStatement,
|
2020 | argument: argument
|
2021 | };
|
2022 | },
|
2023 |
|
2024 | createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
|
2025 | return {
|
2026 | type: Syntax.TryStatement,
|
2027 | block: block,
|
2028 | guardedHandlers: guardedHandlers,
|
2029 | handlers: handlers,
|
2030 | finalizer: finalizer
|
2031 | };
|
2032 | },
|
2033 |
|
2034 | createUnaryExpression: function (operator, argument) {
|
2035 | if (operator === '++' || operator === '--') {
|
2036 | return {
|
2037 | type: Syntax.UpdateExpression,
|
2038 | operator: operator,
|
2039 | argument: argument,
|
2040 | prefix: true
|
2041 | };
|
2042 | }
|
2043 | return {
|
2044 | type: Syntax.UnaryExpression,
|
2045 | operator: operator,
|
2046 | argument: argument,
|
2047 | prefix: true
|
2048 | };
|
2049 | },
|
2050 |
|
2051 | createVariableDeclaration: function (declarations, kind) {
|
2052 | return {
|
2053 | type: Syntax.VariableDeclaration,
|
2054 | declarations: declarations,
|
2055 | kind: kind
|
2056 | };
|
2057 | },
|
2058 |
|
2059 | createVariableDeclarator: function (id, init) {
|
2060 | return {
|
2061 | type: Syntax.VariableDeclarator,
|
2062 | id: id,
|
2063 | init: init
|
2064 | };
|
2065 | },
|
2066 |
|
2067 | createWhileStatement: function (test, body) {
|
2068 | return {
|
2069 | type: Syntax.WhileStatement,
|
2070 | test: test,
|
2071 | body: body
|
2072 | };
|
2073 | },
|
2074 |
|
2075 | createWithStatement: function (object, body) {
|
2076 | return {
|
2077 | type: Syntax.WithStatement,
|
2078 | object: object,
|
2079 | body: body
|
2080 | };
|
2081 | },
|
2082 |
|
2083 | createTemplateElement: function (value, tail) {
|
2084 | return {
|
2085 | type: Syntax.TemplateElement,
|
2086 | value: value,
|
2087 | tail: tail
|
2088 | };
|
2089 | },
|
2090 |
|
2091 | createTemplateLiteral: function (quasis, expressions) {
|
2092 | return {
|
2093 | type: Syntax.TemplateLiteral,
|
2094 | quasis: quasis,
|
2095 | expressions: expressions
|
2096 | };
|
2097 | },
|
2098 |
|
2099 | createSpreadElement: function (argument) {
|
2100 | return {
|
2101 | type: Syntax.SpreadElement,
|
2102 | argument: argument
|
2103 | };
|
2104 | },
|
2105 |
|
2106 | createSpreadProperty: function (argument) {
|
2107 | return {
|
2108 | type: Syntax.SpreadProperty,
|
2109 | argument: argument
|
2110 | };
|
2111 | },
|
2112 |
|
2113 | createTaggedTemplateExpression: function (tag, quasi) {
|
2114 | return {
|
2115 | type: Syntax.TaggedTemplateExpression,
|
2116 | tag: tag,
|
2117 | quasi: quasi
|
2118 | };
|
2119 | },
|
2120 |
|
2121 | createArrowFunctionExpression: function (params, defaults, body, rest, expression) {
|
2122 | return {
|
2123 | type: Syntax.ArrowFunctionExpression,
|
2124 | id: null,
|
2125 | params: params,
|
2126 | defaults: defaults,
|
2127 | body: body,
|
2128 | rest: rest,
|
2129 | generator: false,
|
2130 | expression: expression
|
2131 | };
|
2132 | },
|
2133 |
|
2134 | createMethodDefinition: function (propertyType, kind, key, value) {
|
2135 | return {
|
2136 | type: Syntax.MethodDefinition,
|
2137 | key: key,
|
2138 | value: value,
|
2139 | kind: kind,
|
2140 | 'static': propertyType === ClassPropertyType.static
|
2141 | };
|
2142 | },
|
2143 |
|
2144 | createClassProperty: function (propertyIdentifier) {
|
2145 | return {
|
2146 | type: Syntax.ClassProperty,
|
2147 | id: propertyIdentifier
|
2148 | };
|
2149 | },
|
2150 |
|
2151 | createClassBody: function (body) {
|
2152 | return {
|
2153 | type: Syntax.ClassBody,
|
2154 | body: body
|
2155 | };
|
2156 | },
|
2157 |
|
2158 | createClassExpression: function (id, superClass, body, parametricType) {
|
2159 | return {
|
2160 | type: Syntax.ClassExpression,
|
2161 | id: id,
|
2162 | superClass: superClass,
|
2163 | body: body,
|
2164 | parametricType: parametricType
|
2165 | };
|
2166 | },
|
2167 |
|
2168 | createClassDeclaration: function (id, superClass, body, parametricType, superParametricType) {
|
2169 | return {
|
2170 | type: Syntax.ClassDeclaration,
|
2171 | id: id,
|
2172 | superClass: superClass,
|
2173 | body: body,
|
2174 | parametricType: parametricType,
|
2175 | superParametricType: superParametricType
|
2176 | };
|
2177 | },
|
2178 |
|
2179 | createExportSpecifier: function (id, name) {
|
2180 | return {
|
2181 | type: Syntax.ExportSpecifier,
|
2182 | id: id,
|
2183 | name: name
|
2184 | };
|
2185 | },
|
2186 |
|
2187 | createExportBatchSpecifier: function () {
|
2188 | return {
|
2189 | type: Syntax.ExportBatchSpecifier
|
2190 | };
|
2191 | },
|
2192 |
|
2193 | createExportDeclaration: function (declaration, specifiers, source) {
|
2194 | return {
|
2195 | type: Syntax.ExportDeclaration,
|
2196 | declaration: declaration,
|
2197 | specifiers: specifiers,
|
2198 | source: source
|
2199 | };
|
2200 | },
|
2201 |
|
2202 | createImportSpecifier: function (id, name) {
|
2203 | return {
|
2204 | type: Syntax.ImportSpecifier,
|
2205 | id: id,
|
2206 | name: name
|
2207 | };
|
2208 | },
|
2209 |
|
2210 | createImportDeclaration: function (specifiers, kind, source) {
|
2211 | return {
|
2212 | type: Syntax.ImportDeclaration,
|
2213 | specifiers: specifiers,
|
2214 | kind: kind,
|
2215 | source: source
|
2216 | };
|
2217 | },
|
2218 |
|
2219 | createYieldExpression: function (argument, delegate) {
|
2220 | return {
|
2221 | type: Syntax.YieldExpression,
|
2222 | argument: argument,
|
2223 | delegate: delegate
|
2224 | };
|
2225 | },
|
2226 |
|
2227 | createModuleDeclaration: function (id, source, body) {
|
2228 | return {
|
2229 | type: Syntax.ModuleDeclaration,
|
2230 | id: id,
|
2231 | source: source,
|
2232 | body: body
|
2233 | };
|
2234 | },
|
2235 |
|
2236 | createComprehensionExpression: function (filter, blocks, body) {
|
2237 | return {
|
2238 | type: Syntax.ComprehensionExpression,
|
2239 | filter: filter,
|
2240 | blocks: blocks,
|
2241 | body: body
|
2242 | };
|
2243 | }
|
2244 |
|
2245 | };
|
2246 |
|
2247 |
|
2248 |
|
2249 | function peekLineTerminator() {
|
2250 | var pos, line, start, found;
|
2251 |
|
2252 | pos = index;
|
2253 | line = lineNumber;
|
2254 | start = lineStart;
|
2255 | skipComment();
|
2256 | found = lineNumber !== line;
|
2257 | index = pos;
|
2258 | lineNumber = line;
|
2259 | lineStart = start;
|
2260 |
|
2261 | return found;
|
2262 | }
|
2263 |
|
2264 |
|
2265 |
|
2266 | function throwError(token, messageFormat) {
|
2267 | var error,
|
2268 | args = Array.prototype.slice.call(arguments, 2),
|
2269 | msg = messageFormat.replace(
|
2270 | /%(\d)/g,
|
2271 | function (whole, index) {
|
2272 | assert(index < args.length, 'Message reference must be in range');
|
2273 | return args[index];
|
2274 | }
|
2275 | );
|
2276 |
|
2277 | if (typeof token.lineNumber === 'number') {
|
2278 | error = new Error('Line ' + token.lineNumber + ': ' + msg);
|
2279 | error.index = token.range[0];
|
2280 | error.lineNumber = token.lineNumber;
|
2281 | error.column = token.range[0] - lineStart + 1;
|
2282 | } else {
|
2283 | error = new Error('Line ' + lineNumber + ': ' + msg);
|
2284 | error.index = index;
|
2285 | error.lineNumber = lineNumber;
|
2286 | error.column = index - lineStart + 1;
|
2287 | }
|
2288 |
|
2289 | error.description = msg;
|
2290 | throw error;
|
2291 | }
|
2292 |
|
2293 | function throwErrorTolerant() {
|
2294 | try {
|
2295 | throwError.apply(null, arguments);
|
2296 | } catch (e) {
|
2297 | if (extra.errors) {
|
2298 | extra.errors.push(e);
|
2299 | } else {
|
2300 | throw e;
|
2301 | }
|
2302 | }
|
2303 | }
|
2304 |
|
2305 |
|
2306 |
|
2307 |
|
2308 | function throwUnexpected(token) {
|
2309 | if (token.type === Token.EOF) {
|
2310 | throwError(token, Messages.UnexpectedEOS);
|
2311 | }
|
2312 |
|
2313 | if (token.type === Token.NumericLiteral) {
|
2314 | throwError(token, Messages.UnexpectedNumber);
|
2315 | }
|
2316 |
|
2317 | if (token.type === Token.StringLiteral || token.type === Token.XJSText) {
|
2318 | throwError(token, Messages.UnexpectedString);
|
2319 | }
|
2320 |
|
2321 | if (token.type === Token.Identifier) {
|
2322 | throwError(token, Messages.UnexpectedIdentifier);
|
2323 | }
|
2324 |
|
2325 | if (token.type === Token.Keyword) {
|
2326 | if (isFutureReservedWord(token.value)) {
|
2327 | throwError(token, Messages.UnexpectedReserved);
|
2328 | } else if (strict && isStrictModeReservedWord(token.value)) {
|
2329 | throwErrorTolerant(token, Messages.StrictReservedWord);
|
2330 | return;
|
2331 | }
|
2332 | throwError(token, Messages.UnexpectedToken, token.value);
|
2333 | }
|
2334 |
|
2335 | if (token.type === Token.Template) {
|
2336 | throwError(token, Messages.UnexpectedTemplate, token.value.raw);
|
2337 | }
|
2338 |
|
2339 |
|
2340 | throwError(token, Messages.UnexpectedToken, token.value);
|
2341 | }
|
2342 |
|
2343 |
|
2344 |
|
2345 |
|
2346 | function expect(value) {
|
2347 | var token = lex();
|
2348 | if (token.type !== Token.Punctuator || token.value !== value) {
|
2349 | throwUnexpected(token);
|
2350 | }
|
2351 | }
|
2352 |
|
2353 |
|
2354 |
|
2355 |
|
2356 | function expectKeyword(keyword) {
|
2357 | var token = lex();
|
2358 | if (token.type !== Token.Keyword || token.value !== keyword) {
|
2359 | throwUnexpected(token);
|
2360 | }
|
2361 | }
|
2362 |
|
2363 |
|
2364 |
|
2365 | function match(value) {
|
2366 | return lookahead.type === Token.Punctuator && lookahead.value === value;
|
2367 | }
|
2368 |
|
2369 |
|
2370 |
|
2371 | function matchKeyword(keyword) {
|
2372 | return lookahead.type === Token.Keyword && lookahead.value === keyword;
|
2373 | }
|
2374 |
|
2375 |
|
2376 |
|
2377 |
|
2378 | function matchContextualKeyword(keyword) {
|
2379 | return lookahead.type === Token.Identifier && lookahead.value === keyword;
|
2380 | }
|
2381 |
|
2382 |
|
2383 |
|
2384 | function matchAssign() {
|
2385 | var op;
|
2386 |
|
2387 | if (lookahead.type !== Token.Punctuator) {
|
2388 | return false;
|
2389 | }
|
2390 | op = lookahead.value;
|
2391 | return op === '=' ||
|
2392 | op === '*=' ||
|
2393 | op === '/=' ||
|
2394 | op === '%=' ||
|
2395 | op === '+=' ||
|
2396 | op === '-=' ||
|
2397 | op === '<<=' ||
|
2398 | op === '>>=' ||
|
2399 | op === '>>>=' ||
|
2400 | op === '&=' ||
|
2401 | op === '^=' ||
|
2402 | op === '|=';
|
2403 | }
|
2404 |
|
2405 | function consumeSemicolon() {
|
2406 | var line;
|
2407 |
|
2408 |
|
2409 | if (source.charCodeAt(index) === 59) {
|
2410 | lex();
|
2411 | return;
|
2412 | }
|
2413 |
|
2414 | line = lineNumber;
|
2415 | skipComment();
|
2416 | if (lineNumber !== line) {
|
2417 | return;
|
2418 | }
|
2419 |
|
2420 | if (match(';')) {
|
2421 | lex();
|
2422 | return;
|
2423 | }
|
2424 |
|
2425 | if (lookahead.type !== Token.EOF && !match('}')) {
|
2426 | throwUnexpected(lookahead);
|
2427 | }
|
2428 | }
|
2429 |
|
2430 |
|
2431 |
|
2432 | function isLeftHandSide(expr) {
|
2433 | return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
|
2434 | }
|
2435 |
|
2436 | function isAssignableLeftHandSide(expr) {
|
2437 | return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
|
2438 | }
|
2439 |
|
2440 |
|
2441 |
|
2442 | function parseArrayInitialiser() {
|
2443 | var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true, body,
|
2444 | marker = markerCreate();
|
2445 |
|
2446 | expect('[');
|
2447 | while (!match(']')) {
|
2448 | if (lookahead.value === 'for' &&
|
2449 | lookahead.type === Token.Keyword) {
|
2450 | if (!possiblecomprehension) {
|
2451 | throwError({}, Messages.ComprehensionError);
|
2452 | }
|
2453 | matchKeyword('for');
|
2454 | tmp = parseForStatement({ignoreBody: true});
|
2455 | tmp.of = tmp.type === Syntax.ForOfStatement;
|
2456 | tmp.type = Syntax.ComprehensionBlock;
|
2457 | if (tmp.left.kind) {
|
2458 | throwError({}, Messages.ComprehensionError);
|
2459 | }
|
2460 | blocks.push(tmp);
|
2461 | } else if (lookahead.value === 'if' &&
|
2462 | lookahead.type === Token.Keyword) {
|
2463 | if (!possiblecomprehension) {
|
2464 | throwError({}, Messages.ComprehensionError);
|
2465 | }
|
2466 | expectKeyword('if');
|
2467 | expect('(');
|
2468 | filter = parseExpression();
|
2469 | expect(')');
|
2470 | } else if (lookahead.value === ',' &&
|
2471 | lookahead.type === Token.Punctuator) {
|
2472 | possiblecomprehension = false;
|
2473 | lex();
|
2474 | elements.push(null);
|
2475 | } else {
|
2476 | tmp = parseSpreadOrAssignmentExpression();
|
2477 | elements.push(tmp);
|
2478 | if (tmp && tmp.type === Syntax.SpreadElement) {
|
2479 | if (!match(']')) {
|
2480 | throwError({}, Messages.ElementAfterSpreadElement);
|
2481 | }
|
2482 | } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
|
2483 | expect(',');
|
2484 | possiblecomprehension = false;
|
2485 | }
|
2486 | }
|
2487 | }
|
2488 |
|
2489 | expect(']');
|
2490 |
|
2491 | if (filter && !blocks.length) {
|
2492 | throwError({}, Messages.ComprehensionRequiresBlock);
|
2493 | }
|
2494 |
|
2495 | if (blocks.length) {
|
2496 | if (elements.length !== 1) {
|
2497 | throwError({}, Messages.ComprehensionError);
|
2498 | }
|
2499 | return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
|
2500 | }
|
2501 | return markerApply(marker, delegate.createArrayExpression(elements));
|
2502 | }
|
2503 |
|
2504 |
|
2505 |
|
2506 | function parsePropertyFunction(options) {
|
2507 | var previousStrict, previousYieldAllowed, params, defaults, body,
|
2508 | marker = markerCreate();
|
2509 |
|
2510 | previousStrict = strict;
|
2511 | previousYieldAllowed = state.yieldAllowed;
|
2512 | state.yieldAllowed = options.generator;
|
2513 | params = options.params || [];
|
2514 | defaults = options.defaults || [];
|
2515 |
|
2516 | body = parseConciseBody();
|
2517 | if (options.name && strict && isRestrictedWord(params[0].name)) {
|
2518 | throwErrorTolerant(options.name, Messages.StrictParamName);
|
2519 | }
|
2520 | strict = previousStrict;
|
2521 | state.yieldAllowed = previousYieldAllowed;
|
2522 |
|
2523 | return markerApply(marker, delegate.createFunctionExpression(
|
2524 | null,
|
2525 | params,
|
2526 | defaults,
|
2527 | body,
|
2528 | options.rest || null,
|
2529 | options.generator,
|
2530 | body.type !== Syntax.BlockStatement,
|
2531 | options.returnType,
|
2532 | options.parametricType
|
2533 | ));
|
2534 | }
|
2535 |
|
2536 |
|
2537 | function parsePropertyMethodFunction(options) {
|
2538 | var previousStrict, tmp, method;
|
2539 |
|
2540 | previousStrict = strict;
|
2541 | strict = true;
|
2542 |
|
2543 | tmp = parseParams();
|
2544 |
|
2545 | if (tmp.stricted) {
|
2546 | throwErrorTolerant(tmp.stricted, tmp.message);
|
2547 | }
|
2548 |
|
2549 |
|
2550 | method = parsePropertyFunction({
|
2551 | params: tmp.params,
|
2552 | defaults: tmp.defaults,
|
2553 | rest: tmp.rest,
|
2554 | generator: options.generator,
|
2555 | returnType: tmp.returnType,
|
2556 | parametricType: options.parametricType
|
2557 | });
|
2558 |
|
2559 | strict = previousStrict;
|
2560 |
|
2561 | return method;
|
2562 | }
|
2563 |
|
2564 |
|
2565 | function parseObjectPropertyKey() {
|
2566 | var marker = markerCreate(),
|
2567 | token = lex(),
|
2568 | propertyKey,
|
2569 | result;
|
2570 |
|
2571 |
|
2572 |
|
2573 |
|
2574 | if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
|
2575 | if (strict && token.octal) {
|
2576 | throwErrorTolerant(token, Messages.StrictOctalLiteral);
|
2577 | }
|
2578 | return markerApply(marker, delegate.createLiteral(token));
|
2579 | }
|
2580 |
|
2581 | if (token.type === Token.Punctuator && token.value === '[') {
|
2582 |
|
2583 |
|
2584 | marker = markerCreate();
|
2585 | propertyKey = parseAssignmentExpression();
|
2586 | result = markerApply(marker, propertyKey);
|
2587 | expect(']');
|
2588 | return result;
|
2589 | }
|
2590 |
|
2591 | return markerApply(marker, delegate.createIdentifier(token.value));
|
2592 | }
|
2593 |
|
2594 | function parseObjectProperty() {
|
2595 | var token, key, id, value, param, expr, computed,
|
2596 | marker = markerCreate();
|
2597 |
|
2598 | token = lookahead;
|
2599 | computed = (token.value === '[');
|
2600 |
|
2601 | if (token.type === Token.Identifier || computed) {
|
2602 |
|
2603 | id = parseObjectPropertyKey();
|
2604 |
|
2605 |
|
2606 |
|
2607 | if (token.value === 'get' && !(match(':') || match('('))) {
|
2608 | computed = (lookahead.value === '[');
|
2609 | key = parseObjectPropertyKey();
|
2610 | expect('(');
|
2611 | expect(')');
|
2612 | return markerApply(marker, delegate.createProperty('get', key, parsePropertyFunction({ generator: false }), false, false, computed));
|
2613 | }
|
2614 | if (token.value === 'set' && !(match(':') || match('('))) {
|
2615 | computed = (lookahead.value === '[');
|
2616 | key = parseObjectPropertyKey();
|
2617 | expect('(');
|
2618 | token = lookahead;
|
2619 | param = [ parseTypeAnnotatableIdentifier() ];
|
2620 | expect(')');
|
2621 | return markerApply(marker, delegate.createProperty('set', key, parsePropertyFunction({ params: param, generator: false, name: token }), false, false, computed));
|
2622 | }
|
2623 | if (match(':')) {
|
2624 | lex();
|
2625 | return markerApply(marker, delegate.createProperty('init', id, parseAssignmentExpression(), false, false, computed));
|
2626 | }
|
2627 | if (match('(')) {
|
2628 | return markerApply(marker, delegate.createProperty('init', id, parsePropertyMethodFunction({ generator: false }), true, false, computed));
|
2629 | }
|
2630 | if (computed) {
|
2631 |
|
2632 | throwUnexpected(lookahead);
|
2633 | }
|
2634 | return markerApply(marker, delegate.createProperty('init', id, id, false, true, false));
|
2635 | }
|
2636 | if (token.type === Token.EOF || token.type === Token.Punctuator) {
|
2637 | if (!match('*')) {
|
2638 | throwUnexpected(token);
|
2639 | }
|
2640 | lex();
|
2641 |
|
2642 | computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');
|
2643 |
|
2644 | id = parseObjectPropertyKey();
|
2645 |
|
2646 | if (!match('(')) {
|
2647 | throwUnexpected(lex());
|
2648 | }
|
2649 |
|
2650 | return markerApply(marker, delegate.createProperty('init', id, parsePropertyMethodFunction({ generator: true }), true, false, computed));
|
2651 | }
|
2652 | key = parseObjectPropertyKey();
|
2653 | if (match(':')) {
|
2654 | lex();
|
2655 | return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
|
2656 | }
|
2657 | if (match('(')) {
|
2658 | return markerApply(marker, delegate.createProperty('init', key, parsePropertyMethodFunction({ generator: false }), true, false, false));
|
2659 | }
|
2660 | throwUnexpected(lex());
|
2661 | }
|
2662 |
|
2663 | function parseObjectSpreadProperty() {
|
2664 | var marker = markerCreate();
|
2665 | expect('...');
|
2666 | return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
|
2667 | }
|
2668 |
|
2669 | function parseObjectInitialiser() {
|
2670 | var properties = [], property, name, key, kind, map = {}, toString = String,
|
2671 | marker = markerCreate();
|
2672 |
|
2673 | expect('{');
|
2674 |
|
2675 | while (!match('}')) {
|
2676 | if (match('...')) {
|
2677 | property = parseObjectSpreadProperty();
|
2678 | } else {
|
2679 | property = parseObjectProperty();
|
2680 |
|
2681 | if (property.key.type === Syntax.Identifier) {
|
2682 | name = property.key.name;
|
2683 | } else {
|
2684 | name = toString(property.key.value);
|
2685 | }
|
2686 | kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
|
2687 |
|
2688 | key = '$' + name;
|
2689 | if (Object.prototype.hasOwnProperty.call(map, key)) {
|
2690 | if (map[key] === PropertyKind.Data) {
|
2691 | if (strict && kind === PropertyKind.Data) {
|
2692 | throwErrorTolerant({}, Messages.StrictDuplicateProperty);
|
2693 | } else if (kind !== PropertyKind.Data) {
|
2694 | throwErrorTolerant({}, Messages.AccessorDataProperty);
|
2695 | }
|
2696 | } else {
|
2697 | if (kind === PropertyKind.Data) {
|
2698 | throwErrorTolerant({}, Messages.AccessorDataProperty);
|
2699 | } else if (map[key] & kind) {
|
2700 | throwErrorTolerant({}, Messages.AccessorGetSet);
|
2701 | }
|
2702 | }
|
2703 | map[key] |= kind;
|
2704 | } else {
|
2705 | map[key] = kind;
|
2706 | }
|
2707 | }
|
2708 |
|
2709 | properties.push(property);
|
2710 |
|
2711 | if (!match('}')) {
|
2712 | expect(',');
|
2713 | }
|
2714 | }
|
2715 |
|
2716 | expect('}');
|
2717 |
|
2718 | return markerApply(marker, delegate.createObjectExpression(properties));
|
2719 | }
|
2720 |
|
2721 | function parseTemplateElement(option) {
|
2722 | var marker = markerCreate(),
|
2723 | token = scanTemplateElement(option);
|
2724 | if (strict && token.octal) {
|
2725 | throwError(token, Messages.StrictOctalLiteral);
|
2726 | }
|
2727 | return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
|
2728 | }
|
2729 |
|
2730 | function parseTemplateLiteral() {
|
2731 | var quasi, quasis, expressions, marker = markerCreate();
|
2732 |
|
2733 | quasi = parseTemplateElement({ head: true });
|
2734 | quasis = [ quasi ];
|
2735 | expressions = [];
|
2736 |
|
2737 | while (!quasi.tail) {
|
2738 | expressions.push(parseExpression());
|
2739 | quasi = parseTemplateElement({ head: false });
|
2740 | quasis.push(quasi);
|
2741 | }
|
2742 |
|
2743 | return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
|
2744 | }
|
2745 |
|
2746 |
|
2747 |
|
2748 | function parseGroupExpression() {
|
2749 | var expr;
|
2750 |
|
2751 | expect('(');
|
2752 |
|
2753 | ++state.parenthesizedCount;
|
2754 |
|
2755 | expr = parseExpression();
|
2756 |
|
2757 | expect(')');
|
2758 |
|
2759 | return expr;
|
2760 | }
|
2761 |
|
2762 |
|
2763 |
|
2764 |
|
2765 | function parsePrimaryExpression() {
|
2766 | var marker, type, token, expr;
|
2767 |
|
2768 | type = lookahead.type;
|
2769 |
|
2770 | if (type === Token.Identifier) {
|
2771 | marker = markerCreate();
|
2772 | return markerApply(marker, delegate.createIdentifier(lex().value));
|
2773 | }
|
2774 |
|
2775 | if (type === Token.StringLiteral || type === Token.NumericLiteral) {
|
2776 | if (strict && lookahead.octal) {
|
2777 | throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
|
2778 | }
|
2779 | marker = markerCreate();
|
2780 | return markerApply(marker, delegate.createLiteral(lex()));
|
2781 | }
|
2782 |
|
2783 | if (type === Token.Keyword) {
|
2784 | if (matchKeyword('this')) {
|
2785 | marker = markerCreate();
|
2786 | lex();
|
2787 | return markerApply(marker, delegate.createThisExpression());
|
2788 | }
|
2789 |
|
2790 | if (matchKeyword('function')) {
|
2791 | return parseFunctionExpression();
|
2792 | }
|
2793 |
|
2794 | if (matchKeyword('class')) {
|
2795 | return parseClassExpression();
|
2796 | }
|
2797 |
|
2798 | if (matchKeyword('super')) {
|
2799 | marker = markerCreate();
|
2800 | lex();
|
2801 | return markerApply(marker, delegate.createIdentifier('super'));
|
2802 | }
|
2803 | }
|
2804 |
|
2805 | if (type === Token.BooleanLiteral) {
|
2806 | marker = markerCreate();
|
2807 | token = lex();
|
2808 | token.value = (token.value === 'true');
|
2809 | return markerApply(marker, delegate.createLiteral(token));
|
2810 | }
|
2811 |
|
2812 | if (type === Token.NullLiteral) {
|
2813 | marker = markerCreate();
|
2814 | token = lex();
|
2815 | token.value = null;
|
2816 | return markerApply(marker, delegate.createLiteral(token));
|
2817 | }
|
2818 |
|
2819 | if (match('[')) {
|
2820 | return parseArrayInitialiser();
|
2821 | }
|
2822 |
|
2823 | if (match('{')) {
|
2824 | return parseObjectInitialiser();
|
2825 | }
|
2826 |
|
2827 | if (match('(')) {
|
2828 | return parseGroupExpression();
|
2829 | }
|
2830 |
|
2831 | if (match('/') || match('/=')) {
|
2832 | marker = markerCreate();
|
2833 | return markerApply(marker, delegate.createLiteral(scanRegExp()));
|
2834 | }
|
2835 |
|
2836 | if (type === Token.Template) {
|
2837 | return parseTemplateLiteral();
|
2838 | }
|
2839 |
|
2840 | if (match('<')) {
|
2841 | return parseXJSElement();
|
2842 | }
|
2843 |
|
2844 | throwUnexpected(lex());
|
2845 | }
|
2846 |
|
2847 |
|
2848 |
|
2849 | function parseArguments() {
|
2850 | var args = [], arg;
|
2851 |
|
2852 | expect('(');
|
2853 |
|
2854 | if (!match(')')) {
|
2855 | while (index < length) {
|
2856 | arg = parseSpreadOrAssignmentExpression();
|
2857 | args.push(arg);
|
2858 |
|
2859 | if (match(')')) {
|
2860 | break;
|
2861 | } else if (arg.type === Syntax.SpreadElement) {
|
2862 | throwError({}, Messages.ElementAfterSpreadElement);
|
2863 | }
|
2864 |
|
2865 | expect(',');
|
2866 | }
|
2867 | }
|
2868 |
|
2869 | expect(')');
|
2870 |
|
2871 | return args;
|
2872 | }
|
2873 |
|
2874 | function parseSpreadOrAssignmentExpression() {
|
2875 | if (match('...')) {
|
2876 | var marker = markerCreate();
|
2877 | lex();
|
2878 | return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
|
2879 | }
|
2880 | return parseAssignmentExpression();
|
2881 | }
|
2882 |
|
2883 | function parseNonComputedProperty() {
|
2884 | var marker = markerCreate(),
|
2885 | token = lex();
|
2886 |
|
2887 | if (!isIdentifierName(token)) {
|
2888 | throwUnexpected(token);
|
2889 | }
|
2890 |
|
2891 | return markerApply(marker, delegate.createIdentifier(token.value));
|
2892 | }
|
2893 |
|
2894 | function parseNonComputedMember() {
|
2895 | expect('.');
|
2896 |
|
2897 | return parseNonComputedProperty();
|
2898 | }
|
2899 |
|
2900 | function parseComputedMember() {
|
2901 | var expr;
|
2902 |
|
2903 | expect('[');
|
2904 |
|
2905 | expr = parseExpression();
|
2906 |
|
2907 | expect(']');
|
2908 |
|
2909 | return expr;
|
2910 | }
|
2911 |
|
2912 | function parseNewExpression() {
|
2913 | var callee, args, marker = markerCreate();
|
2914 |
|
2915 | expectKeyword('new');
|
2916 | callee = parseLeftHandSideExpression();
|
2917 | args = match('(') ? parseArguments() : [];
|
2918 |
|
2919 | return markerApply(marker, delegate.createNewExpression(callee, args));
|
2920 | }
|
2921 |
|
2922 | function parseLeftHandSideExpressionAllowCall() {
|
2923 | var expr, args, marker = markerCreate();
|
2924 |
|
2925 | expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
|
2926 |
|
2927 | while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
|
2928 | if (match('(')) {
|
2929 | args = parseArguments();
|
2930 | expr = markerApply(marker, delegate.createCallExpression(expr, args));
|
2931 | } else if (match('[')) {
|
2932 | expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
|
2933 | } else if (match('.')) {
|
2934 | expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
|
2935 | } else {
|
2936 | expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
|
2937 | }
|
2938 | }
|
2939 |
|
2940 | return expr;
|
2941 | }
|
2942 |
|
2943 | function parseLeftHandSideExpression() {
|
2944 | var expr, marker = markerCreate();
|
2945 |
|
2946 | expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
|
2947 |
|
2948 | while (match('.') || match('[') || lookahead.type === Token.Template) {
|
2949 | if (match('[')) {
|
2950 | expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
|
2951 | } else if (match('.')) {
|
2952 | expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
|
2953 | } else {
|
2954 | expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
|
2955 | }
|
2956 | }
|
2957 |
|
2958 | return expr;
|
2959 | }
|
2960 |
|
2961 |
|
2962 |
|
2963 | function parsePostfixExpression() {
|
2964 | var marker = markerCreate(),
|
2965 | expr = parseLeftHandSideExpressionAllowCall(),
|
2966 | token;
|
2967 |
|
2968 | if (lookahead.type !== Token.Punctuator) {
|
2969 | return expr;
|
2970 | }
|
2971 |
|
2972 | if ((match('++') || match('--')) && !peekLineTerminator()) {
|
2973 |
|
2974 | if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
|
2975 | throwErrorTolerant({}, Messages.StrictLHSPostfix);
|
2976 | }
|
2977 |
|
2978 | if (!isLeftHandSide(expr)) {
|
2979 | throwError({}, Messages.InvalidLHSInAssignment);
|
2980 | }
|
2981 |
|
2982 | token = lex();
|
2983 | expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
|
2984 | }
|
2985 |
|
2986 | return expr;
|
2987 | }
|
2988 |
|
2989 |
|
2990 |
|
2991 | function parseUnaryExpression() {
|
2992 | var marker, token, expr;
|
2993 |
|
2994 | if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
|
2995 | return parsePostfixExpression();
|
2996 | }
|
2997 |
|
2998 | if (match('++') || match('--')) {
|
2999 | marker = markerCreate();
|
3000 | token = lex();
|
3001 | expr = parseUnaryExpression();
|
3002 |
|
3003 | if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
|
3004 | throwErrorTolerant({}, Messages.StrictLHSPrefix);
|
3005 | }
|
3006 |
|
3007 | if (!isLeftHandSide(expr)) {
|
3008 | throwError({}, Messages.InvalidLHSInAssignment);
|
3009 | }
|
3010 |
|
3011 | return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
|
3012 | }
|
3013 |
|
3014 | if (match('+') || match('-') || match('~') || match('!')) {
|
3015 | marker = markerCreate();
|
3016 | token = lex();
|
3017 | expr = parseUnaryExpression();
|
3018 | return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
|
3019 | }
|
3020 |
|
3021 | if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
|
3022 | marker = markerCreate();
|
3023 | token = lex();
|
3024 | expr = parseUnaryExpression();
|
3025 | expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
|
3026 | if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
|
3027 | throwErrorTolerant({}, Messages.StrictDelete);
|
3028 | }
|
3029 | return expr;
|
3030 | }
|
3031 |
|
3032 | return parsePostfixExpression();
|
3033 | }
|
3034 |
|
3035 | function binaryPrecedence(token, allowIn) {
|
3036 | var prec = 0;
|
3037 |
|
3038 | if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
|
3039 | return 0;
|
3040 | }
|
3041 |
|
3042 | switch (token.value) {
|
3043 | case '||':
|
3044 | prec = 1;
|
3045 | break;
|
3046 |
|
3047 | case '&&':
|
3048 | prec = 2;
|
3049 | break;
|
3050 |
|
3051 | case '|':
|
3052 | prec = 3;
|
3053 | break;
|
3054 |
|
3055 | case '^':
|
3056 | prec = 4;
|
3057 | break;
|
3058 |
|
3059 | case '&':
|
3060 | prec = 5;
|
3061 | break;
|
3062 |
|
3063 | case '==':
|
3064 | case '!=':
|
3065 | case '===':
|
3066 | case '!==':
|
3067 | prec = 6;
|
3068 | break;
|
3069 |
|
3070 | case '<':
|
3071 | case '>':
|
3072 | case '<=':
|
3073 | case '>=':
|
3074 | case 'instanceof':
|
3075 | prec = 7;
|
3076 | break;
|
3077 |
|
3078 | case 'in':
|
3079 | prec = allowIn ? 7 : 0;
|
3080 | break;
|
3081 |
|
3082 | case '<<':
|
3083 | case '>>':
|
3084 | case '>>>':
|
3085 | prec = 8;
|
3086 | break;
|
3087 |
|
3088 | case '+':
|
3089 | case '-':
|
3090 | prec = 9;
|
3091 | break;
|
3092 |
|
3093 | case '*':
|
3094 | case '/':
|
3095 | case '%':
|
3096 | prec = 11;
|
3097 | break;
|
3098 |
|
3099 | default:
|
3100 | break;
|
3101 | }
|
3102 |
|
3103 | return prec;
|
3104 | }
|
3105 |
|
3106 |
|
3107 |
|
3108 |
|
3109 |
|
3110 |
|
3111 |
|
3112 |
|
3113 |
|
3114 | function parseBinaryExpression() {
|
3115 | var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
|
3116 | marker, markers;
|
3117 |
|
3118 | previousAllowIn = state.allowIn;
|
3119 | state.allowIn = true;
|
3120 |
|
3121 | marker = markerCreate();
|
3122 | left = parseUnaryExpression();
|
3123 |
|
3124 | token = lookahead;
|
3125 | prec = binaryPrecedence(token, previousAllowIn);
|
3126 | if (prec === 0) {
|
3127 | return left;
|
3128 | }
|
3129 | token.prec = prec;
|
3130 | lex();
|
3131 |
|
3132 | markers = [marker, markerCreate()];
|
3133 | right = parseUnaryExpression();
|
3134 |
|
3135 | stack = [left, token, right];
|
3136 |
|
3137 | while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {
|
3138 |
|
3139 |
|
3140 | while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
|
3141 | right = stack.pop();
|
3142 | operator = stack.pop().value;
|
3143 | left = stack.pop();
|
3144 | expr = delegate.createBinaryExpression(operator, left, right);
|
3145 | markers.pop();
|
3146 | marker = markers.pop();
|
3147 | markerApply(marker, expr);
|
3148 | stack.push(expr);
|
3149 | markers.push(marker);
|
3150 | }
|
3151 |
|
3152 |
|
3153 | token = lex();
|
3154 | token.prec = prec;
|
3155 | stack.push(token);
|
3156 | markers.push(markerCreate());
|
3157 | expr = parseUnaryExpression();
|
3158 | stack.push(expr);
|
3159 | }
|
3160 |
|
3161 | state.allowIn = previousAllowIn;
|
3162 |
|
3163 |
|
3164 | i = stack.length - 1;
|
3165 | expr = stack[i];
|
3166 | markers.pop();
|
3167 | while (i > 1) {
|
3168 | expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
|
3169 | i -= 2;
|
3170 | marker = markers.pop();
|
3171 | markerApply(marker, expr);
|
3172 | }
|
3173 |
|
3174 | return expr;
|
3175 | }
|
3176 |
|
3177 |
|
3178 |
|
3179 |
|
3180 | function parseConditionalExpression() {
|
3181 | var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
|
3182 | expr = parseBinaryExpression();
|
3183 |
|
3184 | if (match('?')) {
|
3185 | lex();
|
3186 | previousAllowIn = state.allowIn;
|
3187 | state.allowIn = true;
|
3188 | consequent = parseAssignmentExpression();
|
3189 | state.allowIn = previousAllowIn;
|
3190 | expect(':');
|
3191 | alternate = parseAssignmentExpression();
|
3192 |
|
3193 | expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
|
3194 | }
|
3195 |
|
3196 | return expr;
|
3197 | }
|
3198 |
|
3199 |
|
3200 |
|
3201 | function reinterpretAsAssignmentBindingPattern(expr) {
|
3202 | var i, len, property, element;
|
3203 |
|
3204 | if (expr.type === Syntax.ObjectExpression) {
|
3205 | expr.type = Syntax.ObjectPattern;
|
3206 | for (i = 0, len = expr.properties.length; i < len; i += 1) {
|
3207 | property = expr.properties[i];
|
3208 | if (property.type === Syntax.SpreadProperty) {
|
3209 | if (i < len - 1) {
|
3210 | throwError({}, Messages.PropertyAfterSpreadProperty);
|
3211 | }
|
3212 | reinterpretAsAssignmentBindingPattern(property.argument);
|
3213 | } else {
|
3214 | if (property.kind !== 'init') {
|
3215 | throwError({}, Messages.InvalidLHSInAssignment);
|
3216 | }
|
3217 | reinterpretAsAssignmentBindingPattern(property.value);
|
3218 | }
|
3219 | }
|
3220 | } else if (expr.type === Syntax.ArrayExpression) {
|
3221 | expr.type = Syntax.ArrayPattern;
|
3222 | for (i = 0, len = expr.elements.length; i < len; i += 1) {
|
3223 | element = expr.elements[i];
|
3224 | if (element) {
|
3225 | reinterpretAsAssignmentBindingPattern(element);
|
3226 | }
|
3227 | }
|
3228 | } else if (expr.type === Syntax.Identifier) {
|
3229 | if (isRestrictedWord(expr.name)) {
|
3230 | throwError({}, Messages.InvalidLHSInAssignment);
|
3231 | }
|
3232 | } else if (expr.type === Syntax.SpreadElement) {
|
3233 | reinterpretAsAssignmentBindingPattern(expr.argument);
|
3234 | if (expr.argument.type === Syntax.ObjectPattern) {
|
3235 | throwError({}, Messages.ObjectPatternAsSpread);
|
3236 | }
|
3237 | } else {
|
3238 | if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
|
3239 | throwError({}, Messages.InvalidLHSInAssignment);
|
3240 | }
|
3241 | }
|
3242 | }
|
3243 |
|
3244 |
|
3245 | function reinterpretAsDestructuredParameter(options, expr) {
|
3246 | var i, len, property, element;
|
3247 |
|
3248 | if (expr.type === Syntax.ObjectExpression) {
|
3249 | expr.type = Syntax.ObjectPattern;
|
3250 | for (i = 0, len = expr.properties.length; i < len; i += 1) {
|
3251 | property = expr.properties[i];
|
3252 | if (property.type === Syntax.SpreadProperty) {
|
3253 | if (i < len - 1) {
|
3254 | throwError({}, Messages.PropertyAfterSpreadProperty);
|
3255 | }
|
3256 | reinterpretAsDestructuredParameter(options, property.argument);
|
3257 | } else {
|
3258 | if (property.kind !== 'init') {
|
3259 | throwError({}, Messages.InvalidLHSInFormalsList);
|
3260 | }
|
3261 | reinterpretAsDestructuredParameter(options, property.value);
|
3262 | }
|
3263 | }
|
3264 | } else if (expr.type === Syntax.ArrayExpression) {
|
3265 | expr.type = Syntax.ArrayPattern;
|
3266 | for (i = 0, len = expr.elements.length; i < len; i += 1) {
|
3267 | element = expr.elements[i];
|
3268 | if (element) {
|
3269 | reinterpretAsDestructuredParameter(options, element);
|
3270 | }
|
3271 | }
|
3272 | } else if (expr.type === Syntax.Identifier) {
|
3273 | validateParam(options, expr, expr.name);
|
3274 | } else {
|
3275 | if (expr.type !== Syntax.MemberExpression) {
|
3276 | throwError({}, Messages.InvalidLHSInFormalsList);
|
3277 | }
|
3278 | }
|
3279 | }
|
3280 |
|
3281 | function reinterpretAsCoverFormalsList(expressions) {
|
3282 | var i, len, param, params, defaults, defaultCount, options, rest;
|
3283 |
|
3284 | params = [];
|
3285 | defaults = [];
|
3286 | defaultCount = 0;
|
3287 | rest = null;
|
3288 | options = {
|
3289 | paramSet: {}
|
3290 | };
|
3291 |
|
3292 | for (i = 0, len = expressions.length; i < len; i += 1) {
|
3293 | param = expressions[i];
|
3294 | if (param.type === Syntax.Identifier) {
|
3295 | params.push(param);
|
3296 | defaults.push(null);
|
3297 | validateParam(options, param, param.name);
|
3298 | } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
|
3299 | reinterpretAsDestructuredParameter(options, param);
|
3300 | params.push(param);
|
3301 | defaults.push(null);
|
3302 | } else if (param.type === Syntax.SpreadElement) {
|
3303 | assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
|
3304 | reinterpretAsDestructuredParameter(options, param.argument);
|
3305 | rest = param.argument;
|
3306 | } else if (param.type === Syntax.AssignmentExpression) {
|
3307 | params.push(param.left);
|
3308 | defaults.push(param.right);
|
3309 | ++defaultCount;
|
3310 | validateParam(options, param.left, param.left.name);
|
3311 | } else {
|
3312 | return null;
|
3313 | }
|
3314 | }
|
3315 |
|
3316 | if (options.message === Messages.StrictParamDupe) {
|
3317 | throwError(
|
3318 | strict ? options.stricted : options.firstRestricted,
|
3319 | options.message
|
3320 | );
|
3321 | }
|
3322 |
|
3323 | if (defaultCount === 0) {
|
3324 | defaults = [];
|
3325 | }
|
3326 |
|
3327 | return {
|
3328 | params: params,
|
3329 | defaults: defaults,
|
3330 | rest: rest,
|
3331 | stricted: options.stricted,
|
3332 | firstRestricted: options.firstRestricted,
|
3333 | message: options.message
|
3334 | };
|
3335 | }
|
3336 |
|
3337 | function parseArrowFunctionExpression(options, marker) {
|
3338 | var previousStrict, previousYieldAllowed, body;
|
3339 |
|
3340 | expect('=>');
|
3341 |
|
3342 | previousStrict = strict;
|
3343 | previousYieldAllowed = state.yieldAllowed;
|
3344 | state.yieldAllowed = false;
|
3345 | body = parseConciseBody();
|
3346 |
|
3347 | if (strict && options.firstRestricted) {
|
3348 | throwError(options.firstRestricted, options.message);
|
3349 | }
|
3350 | if (strict && options.stricted) {
|
3351 | throwErrorTolerant(options.stricted, options.message);
|
3352 | }
|
3353 |
|
3354 | strict = previousStrict;
|
3355 | state.yieldAllowed = previousYieldAllowed;
|
3356 |
|
3357 | return markerApply(marker, delegate.createArrowFunctionExpression(
|
3358 | options.params,
|
3359 | options.defaults,
|
3360 | body,
|
3361 | options.rest,
|
3362 | body.type !== Syntax.BlockStatement
|
3363 | ));
|
3364 | }
|
3365 |
|
3366 | function parseAssignmentExpression() {
|
3367 | var marker, expr, token, params, oldParenthesizedCount;
|
3368 |
|
3369 |
|
3370 |
|
3371 |
|
3372 | if ((state.yieldAllowed && matchContextualKeyword('yield')) || (strict && matchKeyword('yield'))) {
|
3373 | return parseYieldExpression();
|
3374 | }
|
3375 |
|
3376 | oldParenthesizedCount = state.parenthesizedCount;
|
3377 |
|
3378 | marker = markerCreate();
|
3379 |
|
3380 | if (match('(')) {
|
3381 | token = lookahead2();
|
3382 | if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
|
3383 | params = parseParams();
|
3384 | if (!match('=>')) {
|
3385 | throwUnexpected(lex());
|
3386 | }
|
3387 | return parseArrowFunctionExpression(params, marker);
|
3388 | }
|
3389 | }
|
3390 |
|
3391 | token = lookahead;
|
3392 | expr = parseConditionalExpression();
|
3393 |
|
3394 | if (match('=>') &&
|
3395 | (state.parenthesizedCount === oldParenthesizedCount ||
|
3396 | state.parenthesizedCount === (oldParenthesizedCount + 1))) {
|
3397 | if (expr.type === Syntax.Identifier) {
|
3398 | params = reinterpretAsCoverFormalsList([ expr ]);
|
3399 | } else if (expr.type === Syntax.SequenceExpression) {
|
3400 | params = reinterpretAsCoverFormalsList(expr.expressions);
|
3401 | }
|
3402 | if (params) {
|
3403 | return parseArrowFunctionExpression(params, marker);
|
3404 | }
|
3405 | }
|
3406 |
|
3407 | if (matchAssign()) {
|
3408 |
|
3409 | if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
|
3410 | throwErrorTolerant(token, Messages.StrictLHSAssignment);
|
3411 | }
|
3412 |
|
3413 |
|
3414 | if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
|
3415 | reinterpretAsAssignmentBindingPattern(expr);
|
3416 | } else if (!isLeftHandSide(expr)) {
|
3417 | throwError({}, Messages.InvalidLHSInAssignment);
|
3418 | }
|
3419 |
|
3420 | expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
|
3421 | }
|
3422 |
|
3423 | return expr;
|
3424 | }
|
3425 |
|
3426 |
|
3427 |
|
3428 | function parseExpression() {
|
3429 | var marker, expr, expressions, sequence, coverFormalsList, spreadFound, oldParenthesizedCount;
|
3430 |
|
3431 | oldParenthesizedCount = state.parenthesizedCount;
|
3432 |
|
3433 | marker = markerCreate();
|
3434 | expr = parseAssignmentExpression();
|
3435 | expressions = [ expr ];
|
3436 |
|
3437 | if (match(',')) {
|
3438 | while (index < length) {
|
3439 | if (!match(',')) {
|
3440 | break;
|
3441 | }
|
3442 |
|
3443 | lex();
|
3444 | expr = parseSpreadOrAssignmentExpression();
|
3445 | expressions.push(expr);
|
3446 |
|
3447 | if (expr.type === Syntax.SpreadElement) {
|
3448 | spreadFound = true;
|
3449 | if (!match(')')) {
|
3450 | throwError({}, Messages.ElementAfterSpreadElement);
|
3451 | }
|
3452 | break;
|
3453 | }
|
3454 | }
|
3455 |
|
3456 | sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
|
3457 | }
|
3458 |
|
3459 | if (match('=>')) {
|
3460 |
|
3461 | if (state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === (oldParenthesizedCount + 1)) {
|
3462 | expr = expr.type === Syntax.SequenceExpression ? expr.expressions : expressions;
|
3463 | coverFormalsList = reinterpretAsCoverFormalsList(expr);
|
3464 | if (coverFormalsList) {
|
3465 | return parseArrowFunctionExpression(coverFormalsList, marker);
|
3466 | }
|
3467 | }
|
3468 | throwUnexpected(lex());
|
3469 | }
|
3470 |
|
3471 | if (spreadFound && lookahead2().value !== '=>') {
|
3472 | throwError({}, Messages.IllegalSpread);
|
3473 | }
|
3474 |
|
3475 | return sequence || expr;
|
3476 | }
|
3477 |
|
3478 |
|
3479 |
|
3480 | function parseStatementList() {
|
3481 | var list = [],
|
3482 | statement;
|
3483 |
|
3484 | while (index < length) {
|
3485 | if (match('}')) {
|
3486 | break;
|
3487 | }
|
3488 | statement = parseSourceElement();
|
3489 | if (typeof statement === 'undefined') {
|
3490 | break;
|
3491 | }
|
3492 | list.push(statement);
|
3493 | }
|
3494 |
|
3495 | return list;
|
3496 | }
|
3497 |
|
3498 | function parseBlock() {
|
3499 | var block, marker = markerCreate();
|
3500 |
|
3501 | expect('{');
|
3502 |
|
3503 | block = parseStatementList();
|
3504 |
|
3505 | expect('}');
|
3506 |
|
3507 | return markerApply(marker, delegate.createBlockStatement(block));
|
3508 | }
|
3509 |
|
3510 |
|
3511 |
|
3512 | function parseObjectTypeAnnotation() {
|
3513 | var isMethod, marker, properties = [], property, propertyKey,
|
3514 | propertyTypeAnnotation;
|
3515 |
|
3516 | expect('{');
|
3517 |
|
3518 | while (!match('}')) {
|
3519 | marker = markerCreate();
|
3520 | propertyKey = parseObjectPropertyKey();
|
3521 | isMethod = match('(');
|
3522 | propertyTypeAnnotation = parseTypeAnnotation();
|
3523 | properties.push(markerApply(marker, delegate.createProperty(
|
3524 | 'init',
|
3525 | propertyKey,
|
3526 | propertyTypeAnnotation,
|
3527 | isMethod,
|
3528 | false
|
3529 | )));
|
3530 |
|
3531 | if (!match('}')) {
|
3532 | if (match(',') || match(';')) {
|
3533 | lex();
|
3534 | } else {
|
3535 | throwUnexpected(lookahead);
|
3536 | }
|
3537 | }
|
3538 | }
|
3539 |
|
3540 | expect('}');
|
3541 |
|
3542 | return delegate.createObjectTypeAnnotation(properties);
|
3543 | }
|
3544 |
|
3545 | function parseVoidTypeAnnotation() {
|
3546 | var marker = markerCreate();
|
3547 | expectKeyword('void');
|
3548 | return markerApply(marker, delegate.createVoidTypeAnnotation());
|
3549 | }
|
3550 |
|
3551 | function parseParametricTypeAnnotation() {
|
3552 | var marker = markerCreate(), typeIdentifier, paramTypes = [];
|
3553 |
|
3554 | expect('<');
|
3555 | while (!match('>')) {
|
3556 | paramTypes.push(parseVariableIdentifier());
|
3557 | if (!match('>')) {
|
3558 | expect(',');
|
3559 | }
|
3560 | }
|
3561 | expect('>');
|
3562 |
|
3563 | return markerApply(marker, delegate.createParametricTypeAnnotation(
|
3564 | paramTypes
|
3565 | ));
|
3566 | }
|
3567 |
|
3568 | function parseTypeAnnotation(dontExpectColon) {
|
3569 | var typeIdentifier = null, params = null, returnType = null,
|
3570 | nullable = false, marker = markerCreate(), returnTypeMarker = null,
|
3571 | parametricType, annotation;
|
3572 |
|
3573 | if (!dontExpectColon) {
|
3574 | expect(':');
|
3575 | }
|
3576 |
|
3577 | if (match('{')) {
|
3578 | return markerApply(marker, parseObjectTypeAnnotation());
|
3579 | }
|
3580 |
|
3581 | if (match('?')) {
|
3582 | lex();
|
3583 | nullable = true;
|
3584 | }
|
3585 |
|
3586 | if (lookahead.type === Token.Identifier) {
|
3587 | typeIdentifier = parseVariableIdentifier();
|
3588 | if (match('<')) {
|
3589 | parametricType = parseParametricTypeAnnotation();
|
3590 | }
|
3591 | } else if (match('(')) {
|
3592 | lex();
|
3593 | params = [];
|
3594 | while (lookahead.type === Token.Identifier || match('?')) {
|
3595 | params.push(parseTypeAnnotatableIdentifier(
|
3596 | true,
|
3597 | true
|
3598 | ));
|
3599 | if (!match(')')) {
|
3600 | expect(',');
|
3601 | }
|
3602 | }
|
3603 | expect(')');
|
3604 |
|
3605 | returnTypeMarker = markerCreate();
|
3606 | expect('=>');
|
3607 |
|
3608 | returnType = parseTypeAnnotation(true);
|
3609 | } else {
|
3610 | if (!matchKeyword('void')) {
|
3611 | throwUnexpected(lookahead);
|
3612 | } else {
|
3613 | return parseVoidTypeAnnotation();
|
3614 | }
|
3615 | }
|
3616 |
|
3617 | return markerApply(marker, delegate.createTypeAnnotation(
|
3618 | typeIdentifier,
|
3619 | parametricType,
|
3620 | params,
|
3621 | returnType,
|
3622 | nullable
|
3623 | ));
|
3624 | }
|
3625 |
|
3626 | function parseVariableIdentifier() {
|
3627 | var marker = markerCreate(),
|
3628 | token = lex();
|
3629 |
|
3630 | if (token.type !== Token.Identifier) {
|
3631 | throwUnexpected(token);
|
3632 | }
|
3633 |
|
3634 | return markerApply(marker, delegate.createIdentifier(token.value));
|
3635 | }
|
3636 |
|
3637 | function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
|
3638 | var marker = markerCreate(),
|
3639 | ident = parseVariableIdentifier(),
|
3640 | isOptionalParam = false;
|
3641 |
|
3642 | if (canBeOptionalParam && match('?')) {
|
3643 | expect('?');
|
3644 | isOptionalParam = true;
|
3645 | }
|
3646 |
|
3647 | if (requireTypeAnnotation || match(':')) {
|
3648 | ident = markerApply(marker, delegate.createTypeAnnotatedIdentifier(
|
3649 | ident,
|
3650 | parseTypeAnnotation()
|
3651 | ));
|
3652 | }
|
3653 |
|
3654 | if (isOptionalParam) {
|
3655 | ident = markerApply(marker, delegate.createOptionalParameter(ident));
|
3656 | }
|
3657 |
|
3658 | return ident;
|
3659 | }
|
3660 |
|
3661 | function parseVariableDeclaration(kind) {
|
3662 | var id,
|
3663 | marker = markerCreate(),
|
3664 | init = null;
|
3665 | if (match('{')) {
|
3666 | id = parseObjectInitialiser();
|
3667 | reinterpretAsAssignmentBindingPattern(id);
|
3668 | } else if (match('[')) {
|
3669 | id = parseArrayInitialiser();
|
3670 | reinterpretAsAssignmentBindingPattern(id);
|
3671 | } else {
|
3672 | id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
|
3673 |
|
3674 | if (strict && isRestrictedWord(id.name)) {
|
3675 | throwErrorTolerant({}, Messages.StrictVarName);
|
3676 | }
|
3677 | }
|
3678 |
|
3679 | if (kind === 'const') {
|
3680 | if (!match('=')) {
|
3681 | throwError({}, Messages.NoUnintializedConst);
|
3682 | }
|
3683 | expect('=');
|
3684 | init = parseAssignmentExpression();
|
3685 | } else if (match('=')) {
|
3686 | lex();
|
3687 | init = parseAssignmentExpression();
|
3688 | }
|
3689 |
|
3690 | return markerApply(marker, delegate.createVariableDeclarator(id, init));
|
3691 | }
|
3692 |
|
3693 | function parseVariableDeclarationList(kind) {
|
3694 | var list = [];
|
3695 |
|
3696 | do {
|
3697 | list.push(parseVariableDeclaration(kind));
|
3698 | if (!match(',')) {
|
3699 | break;
|
3700 | }
|
3701 | lex();
|
3702 | } while (index < length);
|
3703 |
|
3704 | return list;
|
3705 | }
|
3706 |
|
3707 | function parseVariableStatement() {
|
3708 | var declarations, marker = markerCreate();
|
3709 |
|
3710 | expectKeyword('var');
|
3711 |
|
3712 | declarations = parseVariableDeclarationList();
|
3713 |
|
3714 | consumeSemicolon();
|
3715 |
|
3716 | return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
|
3717 | }
|
3718 |
|
3719 |
|
3720 |
|
3721 |
|
3722 |
|
3723 | function parseConstLetDeclaration(kind) {
|
3724 | var declarations, marker = markerCreate();
|
3725 |
|
3726 | expectKeyword(kind);
|
3727 |
|
3728 | declarations = parseVariableDeclarationList(kind);
|
3729 |
|
3730 | consumeSemicolon();
|
3731 |
|
3732 | return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
|
3733 | }
|
3734 |
|
3735 |
|
3736 |
|
3737 | function parseModuleDeclaration() {
|
3738 | var id, src, body, marker = markerCreate();
|
3739 |
|
3740 | lex();
|
3741 |
|
3742 | if (peekLineTerminator()) {
|
3743 | throwError({}, Messages.NewlineAfterModule);
|
3744 | }
|
3745 |
|
3746 | switch (lookahead.type) {
|
3747 |
|
3748 | case Token.StringLiteral:
|
3749 | id = parsePrimaryExpression();
|
3750 | body = parseModuleBlock();
|
3751 | src = null;
|
3752 | break;
|
3753 |
|
3754 | case Token.Identifier:
|
3755 | id = parseVariableIdentifier();
|
3756 | body = null;
|
3757 | if (!matchContextualKeyword('from')) {
|
3758 | throwUnexpected(lex());
|
3759 | }
|
3760 | lex();
|
3761 | src = parsePrimaryExpression();
|
3762 | if (src.type !== Syntax.Literal) {
|
3763 | throwError({}, Messages.InvalidModuleSpecifier);
|
3764 | }
|
3765 | break;
|
3766 | }
|
3767 |
|
3768 | consumeSemicolon();
|
3769 | return markerApply(marker, delegate.createModuleDeclaration(id, src, body));
|
3770 | }
|
3771 |
|
3772 | function parseExportBatchSpecifier() {
|
3773 | var marker = markerCreate();
|
3774 | expect('*');
|
3775 | return markerApply(marker, delegate.createExportBatchSpecifier());
|
3776 | }
|
3777 |
|
3778 | function parseExportSpecifier() {
|
3779 | var id, name = null, marker = markerCreate();
|
3780 |
|
3781 | id = parseVariableIdentifier();
|
3782 | if (matchContextualKeyword('as')) {
|
3783 | lex();
|
3784 | name = parseNonComputedProperty();
|
3785 | }
|
3786 |
|
3787 | return markerApply(marker, delegate.createExportSpecifier(id, name));
|
3788 | }
|
3789 |
|
3790 | function parseExportDeclaration() {
|
3791 | var previousAllowKeyword, decl, def, src, specifiers,
|
3792 | marker = markerCreate();
|
3793 |
|
3794 | expectKeyword('export');
|
3795 |
|
3796 | if (lookahead.type === Token.Keyword) {
|
3797 | switch (lookahead.value) {
|
3798 | case 'let':
|
3799 | case 'const':
|
3800 | case 'var':
|
3801 | case 'class':
|
3802 | case 'function':
|
3803 | return markerApply(marker, delegate.createExportDeclaration(parseSourceElement(), null, null));
|
3804 | }
|
3805 | }
|
3806 |
|
3807 | if (isIdentifierName(lookahead)) {
|
3808 | previousAllowKeyword = state.allowKeyword;
|
3809 | state.allowKeyword = true;
|
3810 | decl = parseVariableDeclarationList('let');
|
3811 | state.allowKeyword = previousAllowKeyword;
|
3812 | return markerApply(marker, delegate.createExportDeclaration(decl, null, null));
|
3813 | }
|
3814 |
|
3815 | specifiers = [];
|
3816 | src = null;
|
3817 |
|
3818 | if (match('*')) {
|
3819 | specifiers.push(parseExportBatchSpecifier());
|
3820 | } else {
|
3821 | expect('{');
|
3822 | do {
|
3823 | specifiers.push(parseExportSpecifier());
|
3824 | } while (match(',') && lex());
|
3825 | expect('}');
|
3826 | }
|
3827 |
|
3828 | if (matchContextualKeyword('from')) {
|
3829 | lex();
|
3830 | src = parsePrimaryExpression();
|
3831 | if (src.type !== Syntax.Literal) {
|
3832 | throwError({}, Messages.InvalidModuleSpecifier);
|
3833 | }
|
3834 | }
|
3835 |
|
3836 | consumeSemicolon();
|
3837 |
|
3838 | return markerApply(marker, delegate.createExportDeclaration(null, specifiers, src));
|
3839 | }
|
3840 |
|
3841 | function parseImportDeclaration() {
|
3842 | var specifiers, kind, src, marker = markerCreate();
|
3843 |
|
3844 | expectKeyword('import');
|
3845 | specifiers = [];
|
3846 |
|
3847 | if (isIdentifierName(lookahead)) {
|
3848 | kind = 'default';
|
3849 | specifiers.push(parseImportSpecifier());
|
3850 |
|
3851 | if (!matchContextualKeyword('from')) {
|
3852 | throwError({}, Messages.NoFromAfterImport);
|
3853 | }
|
3854 | lex();
|
3855 | } else if (match('{')) {
|
3856 | kind = 'named';
|
3857 | lex();
|
3858 | do {
|
3859 | specifiers.push(parseImportSpecifier());
|
3860 | } while (match(',') && lex());
|
3861 | expect('}');
|
3862 |
|
3863 | if (!matchContextualKeyword('from')) {
|
3864 | throwError({}, Messages.NoFromAfterImport);
|
3865 | }
|
3866 | lex();
|
3867 | }
|
3868 |
|
3869 | src = parsePrimaryExpression();
|
3870 | if (src.type !== Syntax.Literal) {
|
3871 | throwError({}, Messages.InvalidModuleSpecifier);
|
3872 | }
|
3873 |
|
3874 | consumeSemicolon();
|
3875 |
|
3876 | return markerApply(marker, delegate.createImportDeclaration(specifiers, kind, src));
|
3877 | }
|
3878 |
|
3879 | function parseImportSpecifier() {
|
3880 | var id, name = null, marker = markerCreate();
|
3881 |
|
3882 | id = parseNonComputedProperty();
|
3883 | if (matchContextualKeyword('as')) {
|
3884 | lex();
|
3885 | name = parseVariableIdentifier();
|
3886 | }
|
3887 |
|
3888 | return markerApply(marker, delegate.createImportSpecifier(id, name));
|
3889 | }
|
3890 |
|
3891 |
|
3892 |
|
3893 | function parseEmptyStatement() {
|
3894 | var marker = markerCreate();
|
3895 | expect(';');
|
3896 | return markerApply(marker, delegate.createEmptyStatement());
|
3897 | }
|
3898 |
|
3899 |
|
3900 |
|
3901 | function parseExpressionStatement() {
|
3902 | var marker = markerCreate(), expr = parseExpression();
|
3903 | consumeSemicolon();
|
3904 | return markerApply(marker, delegate.createExpressionStatement(expr));
|
3905 | }
|
3906 |
|
3907 |
|
3908 |
|
3909 | function parseIfStatement() {
|
3910 | var test, consequent, alternate, marker = markerCreate();
|
3911 |
|
3912 | expectKeyword('if');
|
3913 |
|
3914 | expect('(');
|
3915 |
|
3916 | test = parseExpression();
|
3917 |
|
3918 | expect(')');
|
3919 |
|
3920 | consequent = parseStatement();
|
3921 |
|
3922 | if (matchKeyword('else')) {
|
3923 | lex();
|
3924 | alternate = parseStatement();
|
3925 | } else {
|
3926 | alternate = null;
|
3927 | }
|
3928 |
|
3929 | return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
|
3930 | }
|
3931 |
|
3932 |
|
3933 |
|
3934 | function parseDoWhileStatement() {
|
3935 | var body, test, oldInIteration, marker = markerCreate();
|
3936 |
|
3937 | expectKeyword('do');
|
3938 |
|
3939 | oldInIteration = state.inIteration;
|
3940 | state.inIteration = true;
|
3941 |
|
3942 | body = parseStatement();
|
3943 |
|
3944 | state.inIteration = oldInIteration;
|
3945 |
|
3946 | expectKeyword('while');
|
3947 |
|
3948 | expect('(');
|
3949 |
|
3950 | test = parseExpression();
|
3951 |
|
3952 | expect(')');
|
3953 |
|
3954 | if (match(';')) {
|
3955 | lex();
|
3956 | }
|
3957 |
|
3958 | return markerApply(marker, delegate.createDoWhileStatement(body, test));
|
3959 | }
|
3960 |
|
3961 | function parseWhileStatement() {
|
3962 | var test, body, oldInIteration, marker = markerCreate();
|
3963 |
|
3964 | expectKeyword('while');
|
3965 |
|
3966 | expect('(');
|
3967 |
|
3968 | test = parseExpression();
|
3969 |
|
3970 | expect(')');
|
3971 |
|
3972 | oldInIteration = state.inIteration;
|
3973 | state.inIteration = true;
|
3974 |
|
3975 | body = parseStatement();
|
3976 |
|
3977 | state.inIteration = oldInIteration;
|
3978 |
|
3979 | return markerApply(marker, delegate.createWhileStatement(test, body));
|
3980 | }
|
3981 |
|
3982 | function parseForVariableDeclaration() {
|
3983 | var marker = markerCreate(),
|
3984 | token = lex(),
|
3985 | declarations = parseVariableDeclarationList();
|
3986 |
|
3987 | return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
|
3988 | }
|
3989 |
|
3990 | function parseForStatement(opts) {
|
3991 | var init, test, update, left, right, body, operator, oldInIteration,
|
3992 | marker = markerCreate();
|
3993 | init = test = update = null;
|
3994 | expectKeyword('for');
|
3995 |
|
3996 |
|
3997 | if (matchContextualKeyword('each')) {
|
3998 | throwError({}, Messages.EachNotAllowed);
|
3999 | }
|
4000 |
|
4001 | expect('(');
|
4002 |
|
4003 | if (match(';')) {
|
4004 | lex();
|
4005 | } else {
|
4006 | if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
|
4007 | state.allowIn = false;
|
4008 | init = parseForVariableDeclaration();
|
4009 | state.allowIn = true;
|
4010 |
|
4011 | if (init.declarations.length === 1) {
|
4012 | if (matchKeyword('in') || matchContextualKeyword('of')) {
|
4013 | operator = lookahead;
|
4014 | if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
|
4015 | lex();
|
4016 | left = init;
|
4017 | right = parseExpression();
|
4018 | init = null;
|
4019 | }
|
4020 | }
|
4021 | }
|
4022 | } else {
|
4023 | state.allowIn = false;
|
4024 | init = parseExpression();
|
4025 | state.allowIn = true;
|
4026 |
|
4027 | if (matchContextualKeyword('of')) {
|
4028 | operator = lex();
|
4029 | left = init;
|
4030 | right = parseExpression();
|
4031 | init = null;
|
4032 | } else if (matchKeyword('in')) {
|
4033 |
|
4034 | if (!isAssignableLeftHandSide(init)) {
|
4035 | throwError({}, Messages.InvalidLHSInForIn);
|
4036 | }
|
4037 | operator = lex();
|
4038 | left = init;
|
4039 | right = parseExpression();
|
4040 | init = null;
|
4041 | }
|
4042 | }
|
4043 |
|
4044 | if (typeof left === 'undefined') {
|
4045 | expect(';');
|
4046 | }
|
4047 | }
|
4048 |
|
4049 | if (typeof left === 'undefined') {
|
4050 |
|
4051 | if (!match(';')) {
|
4052 | test = parseExpression();
|
4053 | }
|
4054 | expect(';');
|
4055 |
|
4056 | if (!match(')')) {
|
4057 | update = parseExpression();
|
4058 | }
|
4059 | }
|
4060 |
|
4061 | expect(')');
|
4062 |
|
4063 | oldInIteration = state.inIteration;
|
4064 | state.inIteration = true;
|
4065 |
|
4066 | if (!(opts !== undefined && opts.ignoreBody)) {
|
4067 | body = parseStatement();
|
4068 | }
|
4069 |
|
4070 | state.inIteration = oldInIteration;
|
4071 |
|
4072 | if (typeof left === 'undefined') {
|
4073 | return markerApply(marker, delegate.createForStatement(init, test, update, body));
|
4074 | }
|
4075 |
|
4076 | if (operator.value === 'in') {
|
4077 | return markerApply(marker, delegate.createForInStatement(left, right, body));
|
4078 | }
|
4079 | return markerApply(marker, delegate.createForOfStatement(left, right, body));
|
4080 | }
|
4081 |
|
4082 |
|
4083 |
|
4084 | function parseContinueStatement() {
|
4085 | var label = null, key, marker = markerCreate();
|
4086 |
|
4087 | expectKeyword('continue');
|
4088 |
|
4089 |
|
4090 | if (source.charCodeAt(index) === 59) {
|
4091 | lex();
|
4092 |
|
4093 | if (!state.inIteration) {
|
4094 | throwError({}, Messages.IllegalContinue);
|
4095 | }
|
4096 |
|
4097 | return markerApply(marker, delegate.createContinueStatement(null));
|
4098 | }
|
4099 |
|
4100 | if (peekLineTerminator()) {
|
4101 | if (!state.inIteration) {
|
4102 | throwError({}, Messages.IllegalContinue);
|
4103 | }
|
4104 |
|
4105 | return markerApply(marker, delegate.createContinueStatement(null));
|
4106 | }
|
4107 |
|
4108 | if (lookahead.type === Token.Identifier) {
|
4109 | label = parseVariableIdentifier();
|
4110 |
|
4111 | key = '$' + label.name;
|
4112 | if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
4113 | throwError({}, Messages.UnknownLabel, label.name);
|
4114 | }
|
4115 | }
|
4116 |
|
4117 | consumeSemicolon();
|
4118 |
|
4119 | if (label === null && !state.inIteration) {
|
4120 | throwError({}, Messages.IllegalContinue);
|
4121 | }
|
4122 |
|
4123 | return markerApply(marker, delegate.createContinueStatement(label));
|
4124 | }
|
4125 |
|
4126 |
|
4127 |
|
4128 | function parseBreakStatement() {
|
4129 | var label = null, key, marker = markerCreate();
|
4130 |
|
4131 | expectKeyword('break');
|
4132 |
|
4133 |
|
4134 | if (source.charCodeAt(index) === 59) {
|
4135 | lex();
|
4136 |
|
4137 | if (!(state.inIteration || state.inSwitch)) {
|
4138 | throwError({}, Messages.IllegalBreak);
|
4139 | }
|
4140 |
|
4141 | return markerApply(marker, delegate.createBreakStatement(null));
|
4142 | }
|
4143 |
|
4144 | if (peekLineTerminator()) {
|
4145 | if (!(state.inIteration || state.inSwitch)) {
|
4146 | throwError({}, Messages.IllegalBreak);
|
4147 | }
|
4148 |
|
4149 | return markerApply(marker, delegate.createBreakStatement(null));
|
4150 | }
|
4151 |
|
4152 | if (lookahead.type === Token.Identifier) {
|
4153 | label = parseVariableIdentifier();
|
4154 |
|
4155 | key = '$' + label.name;
|
4156 | if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
4157 | throwError({}, Messages.UnknownLabel, label.name);
|
4158 | }
|
4159 | }
|
4160 |
|
4161 | consumeSemicolon();
|
4162 |
|
4163 | if (label === null && !(state.inIteration || state.inSwitch)) {
|
4164 | throwError({}, Messages.IllegalBreak);
|
4165 | }
|
4166 |
|
4167 | return markerApply(marker, delegate.createBreakStatement(label));
|
4168 | }
|
4169 |
|
4170 |
|
4171 |
|
4172 | function parseReturnStatement() {
|
4173 | var argument = null, marker = markerCreate();
|
4174 |
|
4175 | expectKeyword('return');
|
4176 |
|
4177 | if (!state.inFunctionBody) {
|
4178 | throwErrorTolerant({}, Messages.IllegalReturn);
|
4179 | }
|
4180 |
|
4181 |
|
4182 | if (source.charCodeAt(index) === 32) {
|
4183 | if (isIdentifierStart(source.charCodeAt(index + 1))) {
|
4184 | argument = parseExpression();
|
4185 | consumeSemicolon();
|
4186 | return markerApply(marker, delegate.createReturnStatement(argument));
|
4187 | }
|
4188 | }
|
4189 |
|
4190 | if (peekLineTerminator()) {
|
4191 | return markerApply(marker, delegate.createReturnStatement(null));
|
4192 | }
|
4193 |
|
4194 | if (!match(';')) {
|
4195 | if (!match('}') && lookahead.type !== Token.EOF) {
|
4196 | argument = parseExpression();
|
4197 | }
|
4198 | }
|
4199 |
|
4200 | consumeSemicolon();
|
4201 |
|
4202 | return markerApply(marker, delegate.createReturnStatement(argument));
|
4203 | }
|
4204 |
|
4205 |
|
4206 |
|
4207 | function parseWithStatement() {
|
4208 | var object, body, marker = markerCreate();
|
4209 |
|
4210 | if (strict) {
|
4211 | throwErrorTolerant({}, Messages.StrictModeWith);
|
4212 | }
|
4213 |
|
4214 | expectKeyword('with');
|
4215 |
|
4216 | expect('(');
|
4217 |
|
4218 | object = parseExpression();
|
4219 |
|
4220 | expect(')');
|
4221 |
|
4222 | body = parseStatement();
|
4223 |
|
4224 | return markerApply(marker, delegate.createWithStatement(object, body));
|
4225 | }
|
4226 |
|
4227 |
|
4228 |
|
4229 | function parseSwitchCase() {
|
4230 | var test,
|
4231 | consequent = [],
|
4232 | sourceElement,
|
4233 | marker = markerCreate();
|
4234 |
|
4235 | if (matchKeyword('default')) {
|
4236 | lex();
|
4237 | test = null;
|
4238 | } else {
|
4239 | expectKeyword('case');
|
4240 | test = parseExpression();
|
4241 | }
|
4242 | expect(':');
|
4243 |
|
4244 | while (index < length) {
|
4245 | if (match('}') || matchKeyword('default') || matchKeyword('case')) {
|
4246 | break;
|
4247 | }
|
4248 | sourceElement = parseSourceElement();
|
4249 | if (typeof sourceElement === 'undefined') {
|
4250 | break;
|
4251 | }
|
4252 | consequent.push(sourceElement);
|
4253 | }
|
4254 |
|
4255 | return markerApply(marker, delegate.createSwitchCase(test, consequent));
|
4256 | }
|
4257 |
|
4258 | function parseSwitchStatement() {
|
4259 | var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();
|
4260 |
|
4261 | expectKeyword('switch');
|
4262 |
|
4263 | expect('(');
|
4264 |
|
4265 | discriminant = parseExpression();
|
4266 |
|
4267 | expect(')');
|
4268 |
|
4269 | expect('{');
|
4270 |
|
4271 | cases = [];
|
4272 |
|
4273 | if (match('}')) {
|
4274 | lex();
|
4275 | return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
|
4276 | }
|
4277 |
|
4278 | oldInSwitch = state.inSwitch;
|
4279 | state.inSwitch = true;
|
4280 | defaultFound = false;
|
4281 |
|
4282 | while (index < length) {
|
4283 | if (match('}')) {
|
4284 | break;
|
4285 | }
|
4286 | clause = parseSwitchCase();
|
4287 | if (clause.test === null) {
|
4288 | if (defaultFound) {
|
4289 | throwError({}, Messages.MultipleDefaultsInSwitch);
|
4290 | }
|
4291 | defaultFound = true;
|
4292 | }
|
4293 | cases.push(clause);
|
4294 | }
|
4295 |
|
4296 | state.inSwitch = oldInSwitch;
|
4297 |
|
4298 | expect('}');
|
4299 |
|
4300 | return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
|
4301 | }
|
4302 |
|
4303 |
|
4304 |
|
4305 | function parseThrowStatement() {
|
4306 | var argument, marker = markerCreate();
|
4307 |
|
4308 | expectKeyword('throw');
|
4309 |
|
4310 | if (peekLineTerminator()) {
|
4311 | throwError({}, Messages.NewlineAfterThrow);
|
4312 | }
|
4313 |
|
4314 | argument = parseExpression();
|
4315 |
|
4316 | consumeSemicolon();
|
4317 |
|
4318 | return markerApply(marker, delegate.createThrowStatement(argument));
|
4319 | }
|
4320 |
|
4321 |
|
4322 |
|
4323 | function parseCatchClause() {
|
4324 | var param, body, marker = markerCreate();
|
4325 |
|
4326 | expectKeyword('catch');
|
4327 |
|
4328 | expect('(');
|
4329 | if (match(')')) {
|
4330 | throwUnexpected(lookahead);
|
4331 | }
|
4332 |
|
4333 | param = parseExpression();
|
4334 |
|
4335 | if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
|
4336 | throwErrorTolerant({}, Messages.StrictCatchVariable);
|
4337 | }
|
4338 |
|
4339 | expect(')');
|
4340 | body = parseBlock();
|
4341 | return markerApply(marker, delegate.createCatchClause(param, body));
|
4342 | }
|
4343 |
|
4344 | function parseTryStatement() {
|
4345 | var block, handlers = [], finalizer = null, marker = markerCreate();
|
4346 |
|
4347 | expectKeyword('try');
|
4348 |
|
4349 | block = parseBlock();
|
4350 |
|
4351 | if (matchKeyword('catch')) {
|
4352 | handlers.push(parseCatchClause());
|
4353 | }
|
4354 |
|
4355 | if (matchKeyword('finally')) {
|
4356 | lex();
|
4357 | finalizer = parseBlock();
|
4358 | }
|
4359 |
|
4360 | if (handlers.length === 0 && !finalizer) {
|
4361 | throwError({}, Messages.NoCatchOrFinally);
|
4362 | }
|
4363 |
|
4364 | return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
|
4365 | }
|
4366 |
|
4367 |
|
4368 |
|
4369 | function parseDebuggerStatement() {
|
4370 | var marker = markerCreate();
|
4371 | expectKeyword('debugger');
|
4372 |
|
4373 | consumeSemicolon();
|
4374 |
|
4375 | return markerApply(marker, delegate.createDebuggerStatement());
|
4376 | }
|
4377 |
|
4378 |
|
4379 |
|
4380 | function parseStatement() {
|
4381 | var type = lookahead.type,
|
4382 | marker,
|
4383 | expr,
|
4384 | labeledBody,
|
4385 | key;
|
4386 |
|
4387 | if (type === Token.EOF) {
|
4388 | throwUnexpected(lookahead);
|
4389 | }
|
4390 |
|
4391 | if (type === Token.Punctuator) {
|
4392 | switch (lookahead.value) {
|
4393 | case ';':
|
4394 | return parseEmptyStatement();
|
4395 | case '{':
|
4396 | return parseBlock();
|
4397 | case '(':
|
4398 | return parseExpressionStatement();
|
4399 | default:
|
4400 | break;
|
4401 | }
|
4402 | }
|
4403 |
|
4404 | if (type === Token.Keyword) {
|
4405 | switch (lookahead.value) {
|
4406 | case 'break':
|
4407 | return parseBreakStatement();
|
4408 | case 'continue':
|
4409 | return parseContinueStatement();
|
4410 | case 'debugger':
|
4411 | return parseDebuggerStatement();
|
4412 | case 'do':
|
4413 | return parseDoWhileStatement();
|
4414 | case 'for':
|
4415 | return parseForStatement();
|
4416 | case 'function':
|
4417 | return parseFunctionDeclaration();
|
4418 | case 'class':
|
4419 | return parseClassDeclaration();
|
4420 | case 'if':
|
4421 | return parseIfStatement();
|
4422 | case 'return':
|
4423 | return parseReturnStatement();
|
4424 | case 'switch':
|
4425 | return parseSwitchStatement();
|
4426 | case 'throw':
|
4427 | return parseThrowStatement();
|
4428 | case 'try':
|
4429 | return parseTryStatement();
|
4430 | case 'var':
|
4431 | return parseVariableStatement();
|
4432 | case 'while':
|
4433 | return parseWhileStatement();
|
4434 | case 'with':
|
4435 | return parseWithStatement();
|
4436 | default:
|
4437 | break;
|
4438 | }
|
4439 | }
|
4440 |
|
4441 | marker = markerCreate();
|
4442 | expr = parseExpression();
|
4443 |
|
4444 |
|
4445 | if ((expr.type === Syntax.Identifier) && match(':')) {
|
4446 | lex();
|
4447 |
|
4448 | key = '$' + expr.name;
|
4449 | if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
4450 | throwError({}, Messages.Redeclaration, 'Label', expr.name);
|
4451 | }
|
4452 |
|
4453 | state.labelSet[key] = true;
|
4454 | labeledBody = parseStatement();
|
4455 | delete state.labelSet[key];
|
4456 | return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
|
4457 | }
|
4458 |
|
4459 | consumeSemicolon();
|
4460 |
|
4461 | return markerApply(marker, delegate.createExpressionStatement(expr));
|
4462 | }
|
4463 |
|
4464 |
|
4465 |
|
4466 | function parseConciseBody() {
|
4467 | if (match('{')) {
|
4468 | return parseFunctionSourceElements();
|
4469 | }
|
4470 | return parseAssignmentExpression();
|
4471 | }
|
4472 |
|
4473 | function parseFunctionSourceElements() {
|
4474 | var sourceElement, sourceElements = [], token, directive, firstRestricted,
|
4475 | oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
|
4476 | marker = markerCreate();
|
4477 |
|
4478 | expect('{');
|
4479 |
|
4480 | while (index < length) {
|
4481 | if (lookahead.type !== Token.StringLiteral) {
|
4482 | break;
|
4483 | }
|
4484 | token = lookahead;
|
4485 |
|
4486 | sourceElement = parseSourceElement();
|
4487 | sourceElements.push(sourceElement);
|
4488 | if (sourceElement.expression.type !== Syntax.Literal) {
|
4489 |
|
4490 | break;
|
4491 | }
|
4492 | directive = source.slice(token.range[0] + 1, token.range[1] - 1);
|
4493 | if (directive === 'use strict') {
|
4494 | strict = true;
|
4495 | if (firstRestricted) {
|
4496 | throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
|
4497 | }
|
4498 | } else {
|
4499 | if (!firstRestricted && token.octal) {
|
4500 | firstRestricted = token;
|
4501 | }
|
4502 | }
|
4503 | }
|
4504 |
|
4505 | oldLabelSet = state.labelSet;
|
4506 | oldInIteration = state.inIteration;
|
4507 | oldInSwitch = state.inSwitch;
|
4508 | oldInFunctionBody = state.inFunctionBody;
|
4509 | oldParenthesizedCount = state.parenthesizedCount;
|
4510 |
|
4511 | state.labelSet = {};
|
4512 | state.inIteration = false;
|
4513 | state.inSwitch = false;
|
4514 | state.inFunctionBody = true;
|
4515 | state.parenthesizedCount = 0;
|
4516 |
|
4517 | while (index < length) {
|
4518 | if (match('}')) {
|
4519 | break;
|
4520 | }
|
4521 | sourceElement = parseSourceElement();
|
4522 | if (typeof sourceElement === 'undefined') {
|
4523 | break;
|
4524 | }
|
4525 | sourceElements.push(sourceElement);
|
4526 | }
|
4527 |
|
4528 | expect('}');
|
4529 |
|
4530 | state.labelSet = oldLabelSet;
|
4531 | state.inIteration = oldInIteration;
|
4532 | state.inSwitch = oldInSwitch;
|
4533 | state.inFunctionBody = oldInFunctionBody;
|
4534 | state.parenthesizedCount = oldParenthesizedCount;
|
4535 |
|
4536 | return markerApply(marker, delegate.createBlockStatement(sourceElements));
|
4537 | }
|
4538 |
|
4539 | function validateParam(options, param, name) {
|
4540 | var key = '$' + name;
|
4541 | if (strict) {
|
4542 | if (isRestrictedWord(name)) {
|
4543 | options.stricted = param;
|
4544 | options.message = Messages.StrictParamName;
|
4545 | }
|
4546 | if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
|
4547 | options.stricted = param;
|
4548 | options.message = Messages.StrictParamDupe;
|
4549 | }
|
4550 | } else if (!options.firstRestricted) {
|
4551 | if (isRestrictedWord(name)) {
|
4552 | options.firstRestricted = param;
|
4553 | options.message = Messages.StrictParamName;
|
4554 | } else if (isStrictModeReservedWord(name)) {
|
4555 | options.firstRestricted = param;
|
4556 | options.message = Messages.StrictReservedWord;
|
4557 | } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
|
4558 | options.firstRestricted = param;
|
4559 | options.message = Messages.StrictParamDupe;
|
4560 | }
|
4561 | }
|
4562 | options.paramSet[key] = true;
|
4563 | }
|
4564 |
|
4565 | function parseParam(options) {
|
4566 | var token, rest, param, def;
|
4567 |
|
4568 | token = lookahead;
|
4569 | if (token.value === '...') {
|
4570 | token = lex();
|
4571 | rest = true;
|
4572 | }
|
4573 |
|
4574 | if (match('[')) {
|
4575 | param = parseArrayInitialiser();
|
4576 | reinterpretAsDestructuredParameter(options, param);
|
4577 | } else if (match('{')) {
|
4578 | if (rest) {
|
4579 | throwError({}, Messages.ObjectPatternAsRestParameter);
|
4580 | }
|
4581 | param = parseObjectInitialiser();
|
4582 | reinterpretAsDestructuredParameter(options, param);
|
4583 | } else {
|
4584 |
|
4585 | param =
|
4586 | rest
|
4587 | ? parseVariableIdentifier()
|
4588 | : parseTypeAnnotatableIdentifier(
|
4589 | false,
|
4590 | true
|
4591 | );
|
4592 |
|
4593 | validateParam(options, token, token.value);
|
4594 | }
|
4595 |
|
4596 | if (match('=')) {
|
4597 | if (rest) {
|
4598 | throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
|
4599 | }
|
4600 | lex();
|
4601 | def = parseAssignmentExpression();
|
4602 | ++options.defaultCount;
|
4603 | }
|
4604 |
|
4605 | if (rest) {
|
4606 | if (!match(')')) {
|
4607 | throwError({}, Messages.ParameterAfterRestParameter);
|
4608 | }
|
4609 | options.rest = param;
|
4610 | return false;
|
4611 | }
|
4612 |
|
4613 | options.params.push(param);
|
4614 | options.defaults.push(def);
|
4615 | return !match(')');
|
4616 | }
|
4617 |
|
4618 | function parseParams(firstRestricted) {
|
4619 | var options, marker = markerCreate();
|
4620 |
|
4621 | options = {
|
4622 | params: [],
|
4623 | defaultCount: 0,
|
4624 | defaults: [],
|
4625 | rest: null,
|
4626 | firstRestricted: firstRestricted
|
4627 | };
|
4628 |
|
4629 | expect('(');
|
4630 |
|
4631 | if (!match(')')) {
|
4632 | options.paramSet = {};
|
4633 | while (index < length) {
|
4634 | if (!parseParam(options)) {
|
4635 | break;
|
4636 | }
|
4637 | expect(',');
|
4638 | }
|
4639 | }
|
4640 |
|
4641 | expect(')');
|
4642 |
|
4643 | if (options.defaultCount === 0) {
|
4644 | options.defaults = [];
|
4645 | }
|
4646 |
|
4647 | if (match(':')) {
|
4648 | options.returnType = parseTypeAnnotation();
|
4649 | }
|
4650 |
|
4651 | return markerApply(marker, options);
|
4652 | }
|
4653 |
|
4654 | function parseFunctionDeclaration() {
|
4655 | var id, body, token, tmp, firstRestricted, message, previousStrict, previousYieldAllowed, generator,
|
4656 | marker = markerCreate(), parametricType;
|
4657 |
|
4658 | expectKeyword('function');
|
4659 |
|
4660 | generator = false;
|
4661 | if (match('*')) {
|
4662 | lex();
|
4663 | generator = true;
|
4664 | }
|
4665 |
|
4666 | token = lookahead;
|
4667 |
|
4668 | id = parseVariableIdentifier();
|
4669 |
|
4670 | if (match('<')) {
|
4671 | parametricType = parseParametricTypeAnnotation();
|
4672 | }
|
4673 |
|
4674 | if (strict) {
|
4675 | if (isRestrictedWord(token.value)) {
|
4676 | throwErrorTolerant(token, Messages.StrictFunctionName);
|
4677 | }
|
4678 | } else {
|
4679 | if (isRestrictedWord(token.value)) {
|
4680 | firstRestricted = token;
|
4681 | message = Messages.StrictFunctionName;
|
4682 | } else if (isStrictModeReservedWord(token.value)) {
|
4683 | firstRestricted = token;
|
4684 | message = Messages.StrictReservedWord;
|
4685 | }
|
4686 | }
|
4687 |
|
4688 | tmp = parseParams(firstRestricted);
|
4689 | firstRestricted = tmp.firstRestricted;
|
4690 | if (tmp.message) {
|
4691 | message = tmp.message;
|
4692 | }
|
4693 |
|
4694 | previousStrict = strict;
|
4695 | previousYieldAllowed = state.yieldAllowed;
|
4696 | state.yieldAllowed = generator;
|
4697 |
|
4698 | body = parseFunctionSourceElements();
|
4699 |
|
4700 | if (strict && firstRestricted) {
|
4701 | throwError(firstRestricted, message);
|
4702 | }
|
4703 | if (strict && tmp.stricted) {
|
4704 | throwErrorTolerant(tmp.stricted, message);
|
4705 | }
|
4706 | strict = previousStrict;
|
4707 | state.yieldAllowed = previousYieldAllowed;
|
4708 |
|
4709 | return markerApply(marker, delegate.createFunctionDeclaration(id, tmp.params, tmp.defaults, body, tmp.rest, generator, false,
|
4710 | tmp.returnType, parametricType));
|
4711 | }
|
4712 |
|
4713 | function parseFunctionExpression() {
|
4714 | var token, id = null, firstRestricted, message, tmp, body, previousStrict, previousYieldAllowed, generator,
|
4715 | marker = markerCreate(), parametricType;
|
4716 |
|
4717 | expectKeyword('function');
|
4718 |
|
4719 | generator = false;
|
4720 |
|
4721 | if (match('*')) {
|
4722 | lex();
|
4723 | generator = true;
|
4724 | }
|
4725 |
|
4726 | if (!match('(')) {
|
4727 | if (!match('<')) {
|
4728 | token = lookahead;
|
4729 | id = parseVariableIdentifier();
|
4730 |
|
4731 | if (strict) {
|
4732 | if (isRestrictedWord(token.value)) {
|
4733 | throwErrorTolerant(token, Messages.StrictFunctionName);
|
4734 | }
|
4735 | } else {
|
4736 | if (isRestrictedWord(token.value)) {
|
4737 | firstRestricted = token;
|
4738 | message = Messages.StrictFunctionName;
|
4739 | } else if (isStrictModeReservedWord(token.value)) {
|
4740 | firstRestricted = token;
|
4741 | message = Messages.StrictReservedWord;
|
4742 | }
|
4743 | }
|
4744 | }
|
4745 |
|
4746 | if (match('<')) {
|
4747 | parametricType = parseParametricTypeAnnotation();
|
4748 | }
|
4749 | }
|
4750 |
|
4751 | tmp = parseParams(firstRestricted);
|
4752 | firstRestricted = tmp.firstRestricted;
|
4753 | if (tmp.message) {
|
4754 | message = tmp.message;
|
4755 | }
|
4756 |
|
4757 | previousStrict = strict;
|
4758 | previousYieldAllowed = state.yieldAllowed;
|
4759 | state.yieldAllowed = generator;
|
4760 |
|
4761 | body = parseFunctionSourceElements();
|
4762 |
|
4763 | if (strict && firstRestricted) {
|
4764 | throwError(firstRestricted, message);
|
4765 | }
|
4766 | if (strict && tmp.stricted) {
|
4767 | throwErrorTolerant(tmp.stricted, message);
|
4768 | }
|
4769 | strict = previousStrict;
|
4770 | state.yieldAllowed = previousYieldAllowed;
|
4771 |
|
4772 | return markerApply(marker, delegate.createFunctionExpression(id, tmp.params, tmp.defaults, body, tmp.rest, generator, false,
|
4773 | tmp.returnType, parametricType));
|
4774 | }
|
4775 |
|
4776 | function parseYieldExpression() {
|
4777 | var yieldToken, delegateFlag, expr, marker = markerCreate();
|
4778 |
|
4779 | yieldToken = lex();
|
4780 | assert(yieldToken.value === 'yield', 'Called parseYieldExpression with non-yield lookahead.');
|
4781 |
|
4782 | if (!state.yieldAllowed) {
|
4783 | throwErrorTolerant({}, Messages.IllegalYield);
|
4784 | }
|
4785 |
|
4786 | delegateFlag = false;
|
4787 | if (match('*')) {
|
4788 | lex();
|
4789 | delegateFlag = true;
|
4790 | }
|
4791 |
|
4792 | expr = parseAssignmentExpression();
|
4793 |
|
4794 | return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
|
4795 | }
|
4796 |
|
4797 |
|
4798 |
|
4799 | function parseMethodDefinition(existingPropNames) {
|
4800 | var token, key, param, propType, isValidDuplicateProp = false,
|
4801 | marker = markerCreate(), token2, parametricType,
|
4802 | parametricTypeMarker, annotationMarker;
|
4803 |
|
4804 | if (lookahead.value === 'static') {
|
4805 | propType = ClassPropertyType.static;
|
4806 | lex();
|
4807 | } else {
|
4808 | propType = ClassPropertyType.prototype;
|
4809 | }
|
4810 |
|
4811 | if (match('*')) {
|
4812 | lex();
|
4813 | return markerApply(marker, delegate.createMethodDefinition(
|
4814 | propType,
|
4815 | '',
|
4816 | parseObjectPropertyKey(),
|
4817 | parsePropertyMethodFunction({ generator: true })
|
4818 | ));
|
4819 | }
|
4820 |
|
4821 | token = lookahead;
|
4822 |
|
4823 | key = parseObjectPropertyKey();
|
4824 |
|
4825 | if (token.value === 'get' && !match('(')) {
|
4826 | key = parseObjectPropertyKey();
|
4827 |
|
4828 |
|
4829 |
|
4830 | if (existingPropNames[propType].hasOwnProperty(key.name)) {
|
4831 | isValidDuplicateProp =
|
4832 |
|
4833 | existingPropNames[propType][key.name].get === undefined
|
4834 |
|
4835 | && existingPropNames[propType][key.name].data === undefined
|
4836 |
|
4837 | && existingPropNames[propType][key.name].set !== undefined;
|
4838 | if (!isValidDuplicateProp) {
|
4839 | throwError(key, Messages.IllegalDuplicateClassProperty);
|
4840 | }
|
4841 | } else {
|
4842 | existingPropNames[propType][key.name] = {};
|
4843 | }
|
4844 | existingPropNames[propType][key.name].get = true;
|
4845 |
|
4846 | expect('(');
|
4847 | expect(')');
|
4848 | return markerApply(marker, delegate.createMethodDefinition(
|
4849 | propType,
|
4850 | 'get',
|
4851 | key,
|
4852 | parsePropertyFunction({ generator: false })
|
4853 | ));
|
4854 | }
|
4855 | if (token.value === 'set' && !match('(')) {
|
4856 | key = parseObjectPropertyKey();
|
4857 |
|
4858 |
|
4859 |
|
4860 | if (existingPropNames[propType].hasOwnProperty(key.name)) {
|
4861 | isValidDuplicateProp =
|
4862 |
|
4863 | existingPropNames[propType][key.name].set === undefined
|
4864 |
|
4865 | && existingPropNames[propType][key.name].data === undefined
|
4866 |
|
4867 | && existingPropNames[propType][key.name].get !== undefined;
|
4868 | if (!isValidDuplicateProp) {
|
4869 | throwError(key, Messages.IllegalDuplicateClassProperty);
|
4870 | }
|
4871 | } else {
|
4872 | existingPropNames[propType][key.name] = {};
|
4873 | }
|
4874 | existingPropNames[propType][key.name].set = true;
|
4875 |
|
4876 | expect('(');
|
4877 | token = lookahead;
|
4878 | param = [ parseTypeAnnotatableIdentifier() ];
|
4879 | expect(')');
|
4880 | return markerApply(marker, delegate.createMethodDefinition(
|
4881 | propType,
|
4882 | 'set',
|
4883 | key,
|
4884 | parsePropertyFunction({ params: param, generator: false, name: token })
|
4885 | ));
|
4886 | }
|
4887 |
|
4888 | if (match('<')) {
|
4889 | parametricType = parseParametricTypeAnnotation();
|
4890 | }
|
4891 |
|
4892 |
|
4893 |
|
4894 | if (existingPropNames[propType].hasOwnProperty(key.name)) {
|
4895 | throwError(key, Messages.IllegalDuplicateClassProperty);
|
4896 | } else {
|
4897 | existingPropNames[propType][key.name] = {};
|
4898 | }
|
4899 | existingPropNames[propType][key.name].data = true;
|
4900 |
|
4901 | return markerApply(marker, delegate.createMethodDefinition(
|
4902 | propType,
|
4903 | '',
|
4904 | key,
|
4905 | parsePropertyMethodFunction({
|
4906 | generator: false,
|
4907 | parametricType: parametricType
|
4908 | })
|
4909 | ));
|
4910 | }
|
4911 |
|
4912 | function parseClassProperty(existingPropNames) {
|
4913 | var marker = markerCreate(), propertyIdentifier;
|
4914 |
|
4915 | propertyIdentifier = parseTypeAnnotatableIdentifier();
|
4916 | expect(';');
|
4917 |
|
4918 | return markerApply(marker, delegate.createClassProperty(
|
4919 | propertyIdentifier
|
4920 | ));
|
4921 | }
|
4922 |
|
4923 | function parseClassElement(existingProps) {
|
4924 | if (match(';')) {
|
4925 | lex();
|
4926 | return;
|
4927 | }
|
4928 |
|
4929 | var doubleLookahead = lookahead2();
|
4930 | if (doubleLookahead.type === Token.Punctuator) {
|
4931 | if (doubleLookahead.value === ':') {
|
4932 | return parseClassProperty(existingProps);
|
4933 | }
|
4934 | }
|
4935 |
|
4936 | return parseMethodDefinition(existingProps);
|
4937 | }
|
4938 |
|
4939 | function parseClassBody() {
|
4940 | var classElement, classElements = [], existingProps = {}, marker = markerCreate();
|
4941 |
|
4942 | existingProps[ClassPropertyType.static] = {};
|
4943 | existingProps[ClassPropertyType.prototype] = {};
|
4944 |
|
4945 | expect('{');
|
4946 |
|
4947 | while (index < length) {
|
4948 | if (match('}')) {
|
4949 | break;
|
4950 | }
|
4951 | classElement = parseClassElement(existingProps);
|
4952 |
|
4953 | if (typeof classElement !== 'undefined') {
|
4954 | classElements.push(classElement);
|
4955 | }
|
4956 | }
|
4957 |
|
4958 | expect('}');
|
4959 |
|
4960 | return markerApply(marker, delegate.createClassBody(classElements));
|
4961 | }
|
4962 |
|
4963 | function parseClassExpression() {
|
4964 | var id, previousYieldAllowed, superClass = null, marker = markerCreate(),
|
4965 | parametricType;
|
4966 |
|
4967 | expectKeyword('class');
|
4968 |
|
4969 | if (!matchKeyword('extends') && !match('{')) {
|
4970 | id = parseVariableIdentifier();
|
4971 | }
|
4972 |
|
4973 | if (match('<')) {
|
4974 | parametricType = parseParametricTypeAnnotation();
|
4975 | }
|
4976 |
|
4977 | if (matchKeyword('extends')) {
|
4978 | expectKeyword('extends');
|
4979 | previousYieldAllowed = state.yieldAllowed;
|
4980 | state.yieldAllowed = false;
|
4981 | superClass = parseAssignmentExpression();
|
4982 | state.yieldAllowed = previousYieldAllowed;
|
4983 | }
|
4984 |
|
4985 | return markerApply(marker, delegate.createClassExpression(id, superClass, parseClassBody(), parametricType));
|
4986 | }
|
4987 |
|
4988 | function parseClassDeclaration() {
|
4989 | var id, previousYieldAllowed, superClass = null, marker = markerCreate(),
|
4990 | parametricType, superParametricType;
|
4991 |
|
4992 | expectKeyword('class');
|
4993 |
|
4994 | id = parseVariableIdentifier();
|
4995 |
|
4996 | if (match('<')) {
|
4997 | parametricType = parseParametricTypeAnnotation();
|
4998 | }
|
4999 |
|
5000 | if (matchKeyword('extends')) {
|
5001 | expectKeyword('extends');
|
5002 | previousYieldAllowed = state.yieldAllowed;
|
5003 | state.yieldAllowed = false;
|
5004 | superClass = parseAssignmentExpression();
|
5005 | state.yieldAllowed = previousYieldAllowed;
|
5006 | }
|
5007 |
|
5008 | return markerApply(marker, delegate.createClassDeclaration(id, superClass, parseClassBody(), parametricType, superParametricType));
|
5009 | }
|
5010 |
|
5011 |
|
5012 |
|
5013 | function matchModuleDeclaration() {
|
5014 | var id;
|
5015 | if (matchContextualKeyword('module')) {
|
5016 | id = lookahead2();
|
5017 | return id.type === Token.StringLiteral || id.type === Token.Identifier;
|
5018 | }
|
5019 | return false;
|
5020 | }
|
5021 |
|
5022 | function parseSourceElement() {
|
5023 | if (lookahead.type === Token.Keyword) {
|
5024 | switch (lookahead.value) {
|
5025 | case 'const':
|
5026 | case 'let':
|
5027 | return parseConstLetDeclaration(lookahead.value);
|
5028 | case 'function':
|
5029 | return parseFunctionDeclaration();
|
5030 | case 'export':
|
5031 | return parseExportDeclaration();
|
5032 | case 'import':
|
5033 | return parseImportDeclaration();
|
5034 | default:
|
5035 | return parseStatement();
|
5036 | }
|
5037 | }
|
5038 |
|
5039 | if (matchModuleDeclaration()) {
|
5040 | throwError({}, Messages.NestedModule);
|
5041 | }
|
5042 |
|
5043 | if (lookahead.type !== Token.EOF) {
|
5044 | return parseStatement();
|
5045 | }
|
5046 | }
|
5047 |
|
5048 | function parseProgramElement() {
|
5049 | if (lookahead.type === Token.Keyword) {
|
5050 | switch (lookahead.value) {
|
5051 | case 'export':
|
5052 | return parseExportDeclaration();
|
5053 | case 'import':
|
5054 | return parseImportDeclaration();
|
5055 | }
|
5056 | }
|
5057 |
|
5058 | if (matchModuleDeclaration()) {
|
5059 | return parseModuleDeclaration();
|
5060 | }
|
5061 |
|
5062 | return parseSourceElement();
|
5063 | }
|
5064 |
|
5065 | function parseProgramElements() {
|
5066 | var sourceElement, sourceElements = [], token, directive, firstRestricted;
|
5067 |
|
5068 | while (index < length) {
|
5069 | token = lookahead;
|
5070 | if (token.type !== Token.StringLiteral) {
|
5071 | break;
|
5072 | }
|
5073 |
|
5074 | sourceElement = parseProgramElement();
|
5075 | sourceElements.push(sourceElement);
|
5076 | if (sourceElement.expression.type !== Syntax.Literal) {
|
5077 |
|
5078 | break;
|
5079 | }
|
5080 | directive = source.slice(token.range[0] + 1, token.range[1] - 1);
|
5081 | if (directive === 'use strict') {
|
5082 | strict = true;
|
5083 | if (firstRestricted) {
|
5084 | throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
|
5085 | }
|
5086 | } else {
|
5087 | if (!firstRestricted && token.octal) {
|
5088 | firstRestricted = token;
|
5089 | }
|
5090 | }
|
5091 | }
|
5092 |
|
5093 | while (index < length) {
|
5094 | sourceElement = parseProgramElement();
|
5095 | if (typeof sourceElement === 'undefined') {
|
5096 | break;
|
5097 | }
|
5098 | sourceElements.push(sourceElement);
|
5099 | }
|
5100 | return sourceElements;
|
5101 | }
|
5102 |
|
5103 | function parseModuleElement() {
|
5104 | return parseSourceElement();
|
5105 | }
|
5106 |
|
5107 | function parseModuleElements() {
|
5108 | var list = [],
|
5109 | statement;
|
5110 |
|
5111 | while (index < length) {
|
5112 | if (match('}')) {
|
5113 | break;
|
5114 | }
|
5115 | statement = parseModuleElement();
|
5116 | if (typeof statement === 'undefined') {
|
5117 | break;
|
5118 | }
|
5119 | list.push(statement);
|
5120 | }
|
5121 |
|
5122 | return list;
|
5123 | }
|
5124 |
|
5125 | function parseModuleBlock() {
|
5126 | var block, marker = markerCreate();
|
5127 |
|
5128 | expect('{');
|
5129 |
|
5130 | block = parseModuleElements();
|
5131 |
|
5132 | expect('}');
|
5133 |
|
5134 | return markerApply(marker, delegate.createBlockStatement(block));
|
5135 | }
|
5136 |
|
5137 | function parseProgram() {
|
5138 | var body, marker = markerCreate();
|
5139 | strict = false;
|
5140 | peek();
|
5141 | body = parseProgramElements();
|
5142 | return markerApply(marker, delegate.createProgram(body));
|
5143 | }
|
5144 |
|
5145 |
|
5146 |
|
5147 |
|
5148 | function addComment(type, value, start, end, loc) {
|
5149 | var comment;
|
5150 |
|
5151 | assert(typeof start === 'number', 'Comment must have valid position');
|
5152 |
|
5153 |
|
5154 |
|
5155 |
|
5156 |
|
5157 | if (state.lastCommentStart >= start) {
|
5158 | return;
|
5159 | }
|
5160 | state.lastCommentStart = start;
|
5161 |
|
5162 | comment = {
|
5163 | type: type,
|
5164 | value: value
|
5165 | };
|
5166 | if (extra.range) {
|
5167 | comment.range = [start, end];
|
5168 | }
|
5169 | if (extra.loc) {
|
5170 | comment.loc = loc;
|
5171 | }
|
5172 | extra.comments.push(comment);
|
5173 | }
|
5174 |
|
5175 | function scanComment() {
|
5176 | var comment, ch, loc, start, blockComment, lineComment;
|
5177 |
|
5178 | comment = '';
|
5179 | blockComment = false;
|
5180 | lineComment = false;
|
5181 |
|
5182 | while (index < length) {
|
5183 | ch = source[index];
|
5184 |
|
5185 | if (lineComment) {
|
5186 | ch = source[index++];
|
5187 | if (isLineTerminator(ch.charCodeAt(0))) {
|
5188 | loc.end = {
|
5189 | line: lineNumber,
|
5190 | column: index - lineStart - 1
|
5191 | };
|
5192 | lineComment = false;
|
5193 | addComment('Line', comment, start, index - 1, loc);
|
5194 | if (ch === '\r' && source[index] === '\n') {
|
5195 | ++index;
|
5196 | }
|
5197 | ++lineNumber;
|
5198 | lineStart = index;
|
5199 | comment = '';
|
5200 | } else if (index >= length) {
|
5201 | lineComment = false;
|
5202 | comment += ch;
|
5203 | loc.end = {
|
5204 | line: lineNumber,
|
5205 | column: length - lineStart
|
5206 | };
|
5207 | addComment('Line', comment, start, length, loc);
|
5208 | } else {
|
5209 | comment += ch;
|
5210 | }
|
5211 | } else if (blockComment) {
|
5212 | if (isLineTerminator(ch.charCodeAt(0))) {
|
5213 | if (ch === '\r' && source[index + 1] === '\n') {
|
5214 | ++index;
|
5215 | comment += '\r\n';
|
5216 | } else {
|
5217 | comment += ch;
|
5218 | }
|
5219 | ++lineNumber;
|
5220 | ++index;
|
5221 | lineStart = index;
|
5222 | if (index >= length) {
|
5223 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
5224 | }
|
5225 | } else {
|
5226 | ch = source[index++];
|
5227 | if (index >= length) {
|
5228 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
5229 | }
|
5230 | comment += ch;
|
5231 | if (ch === '*') {
|
5232 | ch = source[index];
|
5233 | if (ch === '/') {
|
5234 | comment = comment.substr(0, comment.length - 1);
|
5235 | blockComment = false;
|
5236 | ++index;
|
5237 | loc.end = {
|
5238 | line: lineNumber,
|
5239 | column: index - lineStart
|
5240 | };
|
5241 | addComment('Block', comment, start, index, loc);
|
5242 | comment = '';
|
5243 | }
|
5244 | }
|
5245 | }
|
5246 | } else if (ch === '/') {
|
5247 | ch = source[index + 1];
|
5248 | if (ch === '/') {
|
5249 | loc = {
|
5250 | start: {
|
5251 | line: lineNumber,
|
5252 | column: index - lineStart
|
5253 | }
|
5254 | };
|
5255 | start = index;
|
5256 | index += 2;
|
5257 | lineComment = true;
|
5258 | if (index >= length) {
|
5259 | loc.end = {
|
5260 | line: lineNumber,
|
5261 | column: index - lineStart
|
5262 | };
|
5263 | lineComment = false;
|
5264 | addComment('Line', comment, start, index, loc);
|
5265 | }
|
5266 | } else if (ch === '*') {
|
5267 | start = index;
|
5268 | index += 2;
|
5269 | blockComment = true;
|
5270 | loc = {
|
5271 | start: {
|
5272 | line: lineNumber,
|
5273 | column: index - lineStart - 2
|
5274 | }
|
5275 | };
|
5276 | if (index >= length) {
|
5277 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
5278 | }
|
5279 | } else {
|
5280 | break;
|
5281 | }
|
5282 | } else if (isWhiteSpace(ch.charCodeAt(0))) {
|
5283 | ++index;
|
5284 | } else if (isLineTerminator(ch.charCodeAt(0))) {
|
5285 | ++index;
|
5286 | if (ch === '\r' && source[index] === '\n') {
|
5287 | ++index;
|
5288 | }
|
5289 | ++lineNumber;
|
5290 | lineStart = index;
|
5291 | } else {
|
5292 | break;
|
5293 | }
|
5294 | }
|
5295 | }
|
5296 |
|
5297 |
|
5298 |
|
5299 | XHTMLEntities = {
|
5300 | quot: '\u0022',
|
5301 | amp: '&',
|
5302 | apos: '\u0027',
|
5303 | lt: '<',
|
5304 | gt: '>',
|
5305 | nbsp: '\u00A0',
|
5306 | iexcl: '\u00A1',
|
5307 | cent: '\u00A2',
|
5308 | pound: '\u00A3',
|
5309 | curren: '\u00A4',
|
5310 | yen: '\u00A5',
|
5311 | brvbar: '\u00A6',
|
5312 | sect: '\u00A7',
|
5313 | uml: '\u00A8',
|
5314 | copy: '\u00A9',
|
5315 | ordf: '\u00AA',
|
5316 | laquo: '\u00AB',
|
5317 | not: '\u00AC',
|
5318 | shy: '\u00AD',
|
5319 | reg: '\u00AE',
|
5320 | macr: '\u00AF',
|
5321 | deg: '\u00B0',
|
5322 | plusmn: '\u00B1',
|
5323 | sup2: '\u00B2',
|
5324 | sup3: '\u00B3',
|
5325 | acute: '\u00B4',
|
5326 | micro: '\u00B5',
|
5327 | para: '\u00B6',
|
5328 | middot: '\u00B7',
|
5329 | cedil: '\u00B8',
|
5330 | sup1: '\u00B9',
|
5331 | ordm: '\u00BA',
|
5332 | raquo: '\u00BB',
|
5333 | frac14: '\u00BC',
|
5334 | frac12: '\u00BD',
|
5335 | frac34: '\u00BE',
|
5336 | iquest: '\u00BF',
|
5337 | Agrave: '\u00C0',
|
5338 | Aacute: '\u00C1',
|
5339 | Acirc: '\u00C2',
|
5340 | Atilde: '\u00C3',
|
5341 | Auml: '\u00C4',
|
5342 | Aring: '\u00C5',
|
5343 | AElig: '\u00C6',
|
5344 | Ccedil: '\u00C7',
|
5345 | Egrave: '\u00C8',
|
5346 | Eacute: '\u00C9',
|
5347 | Ecirc: '\u00CA',
|
5348 | Euml: '\u00CB',
|
5349 | Igrave: '\u00CC',
|
5350 | Iacute: '\u00CD',
|
5351 | Icirc: '\u00CE',
|
5352 | Iuml: '\u00CF',
|
5353 | ETH: '\u00D0',
|
5354 | Ntilde: '\u00D1',
|
5355 | Ograve: '\u00D2',
|
5356 | Oacute: '\u00D3',
|
5357 | Ocirc: '\u00D4',
|
5358 | Otilde: '\u00D5',
|
5359 | Ouml: '\u00D6',
|
5360 | times: '\u00D7',
|
5361 | Oslash: '\u00D8',
|
5362 | Ugrave: '\u00D9',
|
5363 | Uacute: '\u00DA',
|
5364 | Ucirc: '\u00DB',
|
5365 | Uuml: '\u00DC',
|
5366 | Yacute: '\u00DD',
|
5367 | THORN: '\u00DE',
|
5368 | szlig: '\u00DF',
|
5369 | agrave: '\u00E0',
|
5370 | aacute: '\u00E1',
|
5371 | acirc: '\u00E2',
|
5372 | atilde: '\u00E3',
|
5373 | auml: '\u00E4',
|
5374 | aring: '\u00E5',
|
5375 | aelig: '\u00E6',
|
5376 | ccedil: '\u00E7',
|
5377 | egrave: '\u00E8',
|
5378 | eacute: '\u00E9',
|
5379 | ecirc: '\u00EA',
|
5380 | euml: '\u00EB',
|
5381 | igrave: '\u00EC',
|
5382 | iacute: '\u00ED',
|
5383 | icirc: '\u00EE',
|
5384 | iuml: '\u00EF',
|
5385 | eth: '\u00F0',
|
5386 | ntilde: '\u00F1',
|
5387 | ograve: '\u00F2',
|
5388 | oacute: '\u00F3',
|
5389 | ocirc: '\u00F4',
|
5390 | otilde: '\u00F5',
|
5391 | ouml: '\u00F6',
|
5392 | divide: '\u00F7',
|
5393 | oslash: '\u00F8',
|
5394 | ugrave: '\u00F9',
|
5395 | uacute: '\u00FA',
|
5396 | ucirc: '\u00FB',
|
5397 | uuml: '\u00FC',
|
5398 | yacute: '\u00FD',
|
5399 | thorn: '\u00FE',
|
5400 | yuml: '\u00FF',
|
5401 | OElig: '\u0152',
|
5402 | oelig: '\u0153',
|
5403 | Scaron: '\u0160',
|
5404 | scaron: '\u0161',
|
5405 | Yuml: '\u0178',
|
5406 | fnof: '\u0192',
|
5407 | circ: '\u02C6',
|
5408 | tilde: '\u02DC',
|
5409 | Alpha: '\u0391',
|
5410 | Beta: '\u0392',
|
5411 | Gamma: '\u0393',
|
5412 | Delta: '\u0394',
|
5413 | Epsilon: '\u0395',
|
5414 | Zeta: '\u0396',
|
5415 | Eta: '\u0397',
|
5416 | Theta: '\u0398',
|
5417 | Iota: '\u0399',
|
5418 | Kappa: '\u039A',
|
5419 | Lambda: '\u039B',
|
5420 | Mu: '\u039C',
|
5421 | Nu: '\u039D',
|
5422 | Xi: '\u039E',
|
5423 | Omicron: '\u039F',
|
5424 | Pi: '\u03A0',
|
5425 | Rho: '\u03A1',
|
5426 | Sigma: '\u03A3',
|
5427 | Tau: '\u03A4',
|
5428 | Upsilon: '\u03A5',
|
5429 | Phi: '\u03A6',
|
5430 | Chi: '\u03A7',
|
5431 | Psi: '\u03A8',
|
5432 | Omega: '\u03A9',
|
5433 | alpha: '\u03B1',
|
5434 | beta: '\u03B2',
|
5435 | gamma: '\u03B3',
|
5436 | delta: '\u03B4',
|
5437 | epsilon: '\u03B5',
|
5438 | zeta: '\u03B6',
|
5439 | eta: '\u03B7',
|
5440 | theta: '\u03B8',
|
5441 | iota: '\u03B9',
|
5442 | kappa: '\u03BA',
|
5443 | lambda: '\u03BB',
|
5444 | mu: '\u03BC',
|
5445 | nu: '\u03BD',
|
5446 | xi: '\u03BE',
|
5447 | omicron: '\u03BF',
|
5448 | pi: '\u03C0',
|
5449 | rho: '\u03C1',
|
5450 | sigmaf: '\u03C2',
|
5451 | sigma: '\u03C3',
|
5452 | tau: '\u03C4',
|
5453 | upsilon: '\u03C5',
|
5454 | phi: '\u03C6',
|
5455 | chi: '\u03C7',
|
5456 | psi: '\u03C8',
|
5457 | omega: '\u03C9',
|
5458 | thetasym: '\u03D1',
|
5459 | upsih: '\u03D2',
|
5460 | piv: '\u03D6',
|
5461 | ensp: '\u2002',
|
5462 | emsp: '\u2003',
|
5463 | thinsp: '\u2009',
|
5464 | zwnj: '\u200C',
|
5465 | zwj: '\u200D',
|
5466 | lrm: '\u200E',
|
5467 | rlm: '\u200F',
|
5468 | ndash: '\u2013',
|
5469 | mdash: '\u2014',
|
5470 | lsquo: '\u2018',
|
5471 | rsquo: '\u2019',
|
5472 | sbquo: '\u201A',
|
5473 | ldquo: '\u201C',
|
5474 | rdquo: '\u201D',
|
5475 | bdquo: '\u201E',
|
5476 | dagger: '\u2020',
|
5477 | Dagger: '\u2021',
|
5478 | bull: '\u2022',
|
5479 | hellip: '\u2026',
|
5480 | permil: '\u2030',
|
5481 | prime: '\u2032',
|
5482 | Prime: '\u2033',
|
5483 | lsaquo: '\u2039',
|
5484 | rsaquo: '\u203A',
|
5485 | oline: '\u203E',
|
5486 | frasl: '\u2044',
|
5487 | euro: '\u20AC',
|
5488 | image: '\u2111',
|
5489 | weierp: '\u2118',
|
5490 | real: '\u211C',
|
5491 | trade: '\u2122',
|
5492 | alefsym: '\u2135',
|
5493 | larr: '\u2190',
|
5494 | uarr: '\u2191',
|
5495 | rarr: '\u2192',
|
5496 | darr: '\u2193',
|
5497 | harr: '\u2194',
|
5498 | crarr: '\u21B5',
|
5499 | lArr: '\u21D0',
|
5500 | uArr: '\u21D1',
|
5501 | rArr: '\u21D2',
|
5502 | dArr: '\u21D3',
|
5503 | hArr: '\u21D4',
|
5504 | forall: '\u2200',
|
5505 | part: '\u2202',
|
5506 | exist: '\u2203',
|
5507 | empty: '\u2205',
|
5508 | nabla: '\u2207',
|
5509 | isin: '\u2208',
|
5510 | notin: '\u2209',
|
5511 | ni: '\u220B',
|
5512 | prod: '\u220F',
|
5513 | sum: '\u2211',
|
5514 | minus: '\u2212',
|
5515 | lowast: '\u2217',
|
5516 | radic: '\u221A',
|
5517 | prop: '\u221D',
|
5518 | infin: '\u221E',
|
5519 | ang: '\u2220',
|
5520 | and: '\u2227',
|
5521 | or: '\u2228',
|
5522 | cap: '\u2229',
|
5523 | cup: '\u222A',
|
5524 | 'int': '\u222B',
|
5525 | there4: '\u2234',
|
5526 | sim: '\u223C',
|
5527 | cong: '\u2245',
|
5528 | asymp: '\u2248',
|
5529 | ne: '\u2260',
|
5530 | equiv: '\u2261',
|
5531 | le: '\u2264',
|
5532 | ge: '\u2265',
|
5533 | sub: '\u2282',
|
5534 | sup: '\u2283',
|
5535 | nsub: '\u2284',
|
5536 | sube: '\u2286',
|
5537 | supe: '\u2287',
|
5538 | oplus: '\u2295',
|
5539 | otimes: '\u2297',
|
5540 | perp: '\u22A5',
|
5541 | sdot: '\u22C5',
|
5542 | lceil: '\u2308',
|
5543 | rceil: '\u2309',
|
5544 | lfloor: '\u230A',
|
5545 | rfloor: '\u230B',
|
5546 | lang: '\u2329',
|
5547 | rang: '\u232A',
|
5548 | loz: '\u25CA',
|
5549 | spades: '\u2660',
|
5550 | clubs: '\u2663',
|
5551 | hearts: '\u2665',
|
5552 | diams: '\u2666'
|
5553 | };
|
5554 |
|
5555 | function getQualifiedXJSName(object) {
|
5556 | if (object.type === Syntax.XJSIdentifier) {
|
5557 | return object.name;
|
5558 | }
|
5559 | if (object.type === Syntax.XJSNamespacedName) {
|
5560 | return object.namespace.name + ':' + object.name.name;
|
5561 | }
|
5562 | if (object.type === Syntax.XJSMemberExpression) {
|
5563 | return (
|
5564 | getQualifiedXJSName(object.object) + '.' +
|
5565 | getQualifiedXJSName(object.property)
|
5566 | );
|
5567 | }
|
5568 | }
|
5569 |
|
5570 | function isXJSIdentifierStart(ch) {
|
5571 |
|
5572 | return (ch !== 92) && isIdentifierStart(ch);
|
5573 | }
|
5574 |
|
5575 | function isXJSIdentifierPart(ch) {
|
5576 |
|
5577 | return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
|
5578 | }
|
5579 |
|
5580 | function scanXJSIdentifier() {
|
5581 | var ch, start, value = '';
|
5582 |
|
5583 | start = index;
|
5584 | while (index < length) {
|
5585 | ch = source.charCodeAt(index);
|
5586 | if (!isXJSIdentifierPart(ch)) {
|
5587 | break;
|
5588 | }
|
5589 | value += source[index++];
|
5590 | }
|
5591 |
|
5592 | return {
|
5593 | type: Token.XJSIdentifier,
|
5594 | value: value,
|
5595 | lineNumber: lineNumber,
|
5596 | lineStart: lineStart,
|
5597 | range: [start, index]
|
5598 | };
|
5599 | }
|
5600 |
|
5601 | function scanXJSEntity() {
|
5602 | var ch, str = '', count = 0, entity;
|
5603 | ch = source[index];
|
5604 | assert(ch === '&', 'Entity must start with an ampersand');
|
5605 | index++;
|
5606 | while (index < length && count++ < 10) {
|
5607 | ch = source[index++];
|
5608 | if (ch === ';') {
|
5609 | break;
|
5610 | }
|
5611 | str += ch;
|
5612 | }
|
5613 |
|
5614 | if (str[0] === '#' && str[1] === 'x') {
|
5615 | entity = String.fromCharCode(parseInt(str.substr(2), 16));
|
5616 | } else if (str[0] === '#') {
|
5617 | entity = String.fromCharCode(parseInt(str.substr(1), 10));
|
5618 | } else {
|
5619 | entity = XHTMLEntities[str];
|
5620 | }
|
5621 | return entity;
|
5622 | }
|
5623 |
|
5624 | function scanXJSText(stopChars) {
|
5625 | var ch, str = '', start;
|
5626 | start = index;
|
5627 | while (index < length) {
|
5628 | ch = source[index];
|
5629 | if (stopChars.indexOf(ch) !== -1) {
|
5630 | break;
|
5631 | }
|
5632 | if (ch === '&') {
|
5633 | str += scanXJSEntity();
|
5634 | } else {
|
5635 | index++;
|
5636 | if (isLineTerminator(ch.charCodeAt(0))) {
|
5637 | ++lineNumber;
|
5638 | lineStart = index;
|
5639 | }
|
5640 | str += ch;
|
5641 | }
|
5642 | }
|
5643 | return {
|
5644 | type: Token.XJSText,
|
5645 | value: str,
|
5646 | lineNumber: lineNumber,
|
5647 | lineStart: lineStart,
|
5648 | range: [start, index]
|
5649 | };
|
5650 | }
|
5651 |
|
5652 | function scanXJSStringLiteral() {
|
5653 | var innerToken, quote, start;
|
5654 |
|
5655 | quote = source[index];
|
5656 | assert((quote === '\'' || quote === '"'),
|
5657 | 'String literal must starts with a quote');
|
5658 |
|
5659 | start = index;
|
5660 | ++index;
|
5661 |
|
5662 | innerToken = scanXJSText([quote]);
|
5663 |
|
5664 | if (quote !== source[index]) {
|
5665 | throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
|
5666 | }
|
5667 |
|
5668 | ++index;
|
5669 |
|
5670 | innerToken.range = [start, index];
|
5671 |
|
5672 | return innerToken;
|
5673 | }
|
5674 |
|
5675 | /**
|
5676 | * Between XJS opening and closing tags (e.g. <foo>HERE</foo>), anything that
|
5677 | * is not another XJS tag and is not an expression wrapped by {} is text.
|
5678 | */
|
5679 | function advanceXJSChild() {
|
5680 | var ch = source.charCodeAt(index);
|
5681 |
|
5682 | // { (123) and < (60)
|
5683 | if (ch !== 123 && ch !== 60) {
|
5684 | return scanXJSText(['<', '{']);
|
5685 | }
|
5686 |
|
5687 | return scanPunctuator();
|
5688 | }
|
5689 |
|
5690 | function parseXJSIdentifier() {
|
5691 | var token, marker = markerCreate();
|
5692 |
|
5693 | if (lookahead.type !== Token.XJSIdentifier) {
|
5694 | throwUnexpected(lookahead);
|
5695 | }
|
5696 |
|
5697 | token = lex();
|
5698 | return markerApply(marker, delegate.createXJSIdentifier(token.value));
|
5699 | }
|
5700 |
|
5701 | function parseXJSNamespacedName() {
|
5702 | var namespace, name, marker = markerCreate();
|
5703 |
|
5704 | namespace = parseXJSIdentifier();
|
5705 | expect(':');
|
5706 | name = parseXJSIdentifier();
|
5707 |
|
5708 | return markerApply(marker, delegate.createXJSNamespacedName(namespace, name));
|
5709 | }
|
5710 |
|
5711 | function parseXJSMemberExpression() {
|
5712 | var marker = markerCreate(),
|
5713 | expr = parseXJSIdentifier();
|
5714 |
|
5715 | while (match('.')) {
|
5716 | lex();
|
5717 | expr = markerApply(marker, delegate.createXJSMemberExpression(expr, parseXJSIdentifier()));
|
5718 | }
|
5719 |
|
5720 | return expr;
|
5721 | }
|
5722 |
|
5723 | function parseXJSElementName() {
|
5724 | if (lookahead2().value === ':') {
|
5725 | return parseXJSNamespacedName();
|
5726 | }
|
5727 | if (lookahead2().value === '.') {
|
5728 | return parseXJSMemberExpression();
|
5729 | }
|
5730 |
|
5731 | return parseXJSIdentifier();
|
5732 | }
|
5733 |
|
5734 | function parseXJSAttributeName() {
|
5735 | if (lookahead2().value === ':') {
|
5736 | return parseXJSNamespacedName();
|
5737 | }
|
5738 |
|
5739 | return parseXJSIdentifier();
|
5740 | }
|
5741 |
|
5742 | function parseXJSAttributeValue() {
|
5743 | var value, marker;
|
5744 | if (match('{')) {
|
5745 | value = parseXJSExpressionContainer();
|
5746 | if (value.expression.type === Syntax.XJSEmptyExpression) {
|
5747 | throwError(
|
5748 | value,
|
5749 | 'XJS attributes must only be assigned a non-empty ' +
|
5750 | 'expression'
|
5751 | );
|
5752 | }
|
5753 | } else if (match('<')) {
|
5754 | value = parseXJSElement();
|
5755 | } else if (lookahead.type === Token.XJSText) {
|
5756 | marker = markerCreate();
|
5757 | value = markerApply(marker, delegate.createLiteral(lex()));
|
5758 | } else {
|
5759 | throwError({}, Messages.InvalidXJSAttributeValue);
|
5760 | }
|
5761 | return value;
|
5762 | }
|
5763 |
|
5764 | function parseXJSEmptyExpression() {
|
5765 | var marker = markerCreatePreserveWhitespace();
|
5766 | while (source.charAt(index) !== '}') {
|
5767 | index++;
|
5768 | }
|
5769 | return markerApply(marker, delegate.createXJSEmptyExpression());
|
5770 | }
|
5771 |
|
5772 | function parseXJSExpressionContainer() {
|
5773 | var expression, origInXJSChild, origInXJSTag, marker = markerCreate();
|
5774 |
|
5775 | origInXJSChild = state.inXJSChild;
|
5776 | origInXJSTag = state.inXJSTag;
|
5777 | state.inXJSChild = false;
|
5778 | state.inXJSTag = false;
|
5779 |
|
5780 | expect('{');
|
5781 |
|
5782 | if (match('}')) {
|
5783 | expression = parseXJSEmptyExpression();
|
5784 | } else {
|
5785 | expression = parseExpression();
|
5786 | }
|
5787 |
|
5788 | state.inXJSChild = origInXJSChild;
|
5789 | state.inXJSTag = origInXJSTag;
|
5790 |
|
5791 | expect('}');
|
5792 |
|
5793 | return markerApply(marker, delegate.createXJSExpressionContainer(expression));
|
5794 | }
|
5795 |
|
5796 | function parseXJSSpreadAttribute() {
|
5797 | var expression, origInXJSChild, origInXJSTag, marker = markerCreate();
|
5798 |
|
5799 | origInXJSChild = state.inXJSChild;
|
5800 | origInXJSTag = state.inXJSTag;
|
5801 | state.inXJSChild = false;
|
5802 | state.inXJSTag = false;
|
5803 |
|
5804 | expect('{');
|
5805 | expect('...');
|
5806 |
|
5807 | expression = parseAssignmentExpression();
|
5808 |
|
5809 | state.inXJSChild = origInXJSChild;
|
5810 | state.inXJSTag = origInXJSTag;
|
5811 |
|
5812 | expect('}');
|
5813 |
|
5814 | return markerApply(marker, delegate.createXJSSpreadAttribute(expression));
|
5815 | }
|
5816 |
|
5817 | function parseXJSAttribute() {
|
5818 | var name, marker;
|
5819 |
|
5820 | if (match('{')) {
|
5821 | return parseXJSSpreadAttribute();
|
5822 | }
|
5823 |
|
5824 | marker = markerCreate();
|
5825 |
|
5826 | name = parseXJSAttributeName();
|
5827 |
|
5828 | // HTML empty attribute
|
5829 | if (match('=')) {
|
5830 | lex();
|
5831 | return markerApply(marker, delegate.createXJSAttribute(name, parseXJSAttributeValue()));
|
5832 | }
|
5833 |
|
5834 | return markerApply(marker, delegate.createXJSAttribute(name));
|
5835 | }
|
5836 |
|
5837 | function parseXJSChild() {
|
5838 | var token, marker;
|
5839 | if (match('{')) {
|
5840 | token = parseXJSExpressionContainer();
|
5841 | } else if (lookahead.type === Token.XJSText) {
|
5842 | marker = markerCreatePreserveWhitespace();
|
5843 | token = markerApply(marker, delegate.createLiteral(lex()));
|
5844 | } else {
|
5845 | token = parseXJSElement();
|
5846 | }
|
5847 | return token;
|
5848 | }
|
5849 |
|
5850 | function parseXJSClosingElement() {
|
5851 | var name, origInXJSChild, origInXJSTag, marker = markerCreate();
|
5852 | origInXJSChild = state.inXJSChild;
|
5853 | origInXJSTag = state.inXJSTag;
|
5854 | state.inXJSChild = false;
|
5855 | state.inXJSTag = true;
|
5856 | expect('<');
|
5857 | expect('/');
|
5858 | name = parseXJSElementName();
|
5859 | // Because advance() (called by lex() called by expect()) expects there
|
5860 | // to be a valid token after >, it needs to know whether to look for a
|
5861 | // standard JS token or an XJS text node
|
5862 | state.inXJSChild = origInXJSChild;
|
5863 | state.inXJSTag = origInXJSTag;
|
5864 | expect('>');
|
5865 | return markerApply(marker, delegate.createXJSClosingElement(name));
|
5866 | }
|
5867 |
|
5868 | function parseXJSOpeningElement() {
|
5869 | var name, attribute, attributes = [], selfClosing = false, origInXJSChild, origInXJSTag, marker = markerCreate();
|
5870 |
|
5871 | origInXJSChild = state.inXJSChild;
|
5872 | origInXJSTag = state.inXJSTag;
|
5873 | state.inXJSChild = false;
|
5874 | state.inXJSTag = true;
|
5875 |
|
5876 | expect('<');
|
5877 |
|
5878 | name = parseXJSElementName();
|
5879 |
|
5880 | while (index < length &&
|
5881 | lookahead.value !== '/' &&
|
5882 | lookahead.value !== '>') {
|
5883 | attributes.push(parseXJSAttribute());
|
5884 | }
|
5885 |
|
5886 | state.inXJSTag = origInXJSTag;
|
5887 |
|
5888 | if (lookahead.value === '/') {
|
5889 | expect('/');
|
5890 | // Because advance() (called by lex() called by expect()) expects
|
5891 | // there to be a valid token after >, it needs to know whether to
|
5892 | // look for a standard JS token or an XJS text node
|
5893 | state.inXJSChild = origInXJSChild;
|
5894 | expect('>');
|
5895 | selfClosing = true;
|
5896 | } else {
|
5897 | state.inXJSChild = true;
|
5898 | expect('>');
|
5899 | }
|
5900 | return markerApply(marker, delegate.createXJSOpeningElement(name, attributes, selfClosing));
|
5901 | }
|
5902 |
|
5903 | function parseXJSElement() {
|
5904 | var openingElement, closingElement, children = [], origInXJSChild, origInXJSTag, marker = markerCreate();
|
5905 |
|
5906 | origInXJSChild = state.inXJSChild;
|
5907 | origInXJSTag = state.inXJSTag;
|
5908 | openingElement = parseXJSOpeningElement();
|
5909 |
|
5910 | if (!openingElement.selfClosing) {
|
5911 | while (index < length) {
|
5912 | state.inXJSChild = false; // Call lookahead2() with inXJSChild = false because </ should not be considered in the child
|
5913 | if (lookahead.value === '<' && lookahead2().value === '/') {
|
5914 | break;
|
5915 | }
|
5916 | state.inXJSChild = true;
|
5917 | children.push(parseXJSChild());
|
5918 | }
|
5919 | state.inXJSChild = origInXJSChild;
|
5920 | state.inXJSTag = origInXJSTag;
|
5921 | closingElement = parseXJSClosingElement();
|
5922 | if (getQualifiedXJSName(closingElement.name) !== getQualifiedXJSName(openingElement.name)) {
|
5923 | throwError({}, Messages.ExpectedXJSClosingTag, getQualifiedXJSName(openingElement.name));
|
5924 | }
|
5925 | }
|
5926 |
|
5927 | // When (erroneously) writing two adjacent tags like
|
5928 | //
|
5929 | // var x = <div>one</div><div>two</div>;
|
5930 | //
|
5931 | // the default error message is a bit incomprehensible. Since it's
|
5932 | // rarely (never?) useful to write a less-than sign after an XJS
|
5933 | // element, we disallow it here in the parser in order to provide a
|
5934 | // better error message. (In the rare case that the less-than operator
|
5935 | // was intended, the left tag can be wrapped in parentheses.)
|
5936 | if (!origInXJSChild && match('<')) {
|
5937 | throwError(lookahead, Messages.AdjacentXJSElements);
|
5938 | }
|
5939 |
|
5940 | return markerApply(marker, delegate.createXJSElement(openingElement, closingElement, children));
|
5941 | }
|
5942 |
|
5943 | function collectToken() {
|
5944 | var start, loc, token, range, value;
|
5945 |
|
5946 | if (!state.inXJSChild) {
|
5947 | skipComment();
|
5948 | }
|
5949 |
|
5950 | start = index;
|
5951 | loc = {
|
5952 | start: {
|
5953 | line: lineNumber,
|
5954 | column: index - lineStart
|
5955 | }
|
5956 | };
|
5957 |
|
5958 | token = extra.advance();
|
5959 | loc.end = {
|
5960 | line: lineNumber,
|
5961 | column: index - lineStart
|
5962 | };
|
5963 |
|
5964 | if (token.type !== Token.EOF) {
|
5965 | range = [token.range[0], token.range[1]];
|
5966 | value = source.slice(token.range[0], token.range[1]);
|
5967 | extra.tokens.push({
|
5968 | type: TokenName[token.type],
|
5969 | value: value,
|
5970 | range: range,
|
5971 | loc: loc
|
5972 | });
|
5973 | }
|
5974 |
|
5975 | return token;
|
5976 | }
|
5977 |
|
5978 | function collectRegex() {
|
5979 | var pos, loc, regex, token;
|
5980 |
|
5981 | skipComment();
|
5982 |
|
5983 | pos = index;
|
5984 | loc = {
|
5985 | start: {
|
5986 | line: lineNumber,
|
5987 | column: index - lineStart
|
5988 | }
|
5989 | };
|
5990 |
|
5991 | regex = extra.scanRegExp();
|
5992 | loc.end = {
|
5993 | line: lineNumber,
|
5994 | column: index - lineStart
|
5995 | };
|
5996 |
|
5997 | if (!extra.tokenize) {
|
5998 | // Pop the previous token, which is likely '/' or '/='
|
5999 | if (extra.tokens.length > 0) {
|
6000 | token = extra.tokens[extra.tokens.length - 1];
|
6001 | if (token.range[0] === pos && token.type === 'Punctuator') {
|
6002 | if (token.value === '/' || token.value === '/=') {
|
6003 | extra.tokens.pop();
|
6004 | }
|
6005 | }
|
6006 | }
|
6007 |
|
6008 | extra.tokens.push({
|
6009 | type: 'RegularExpression',
|
6010 | value: regex.literal,
|
6011 | range: [pos, index],
|
6012 | loc: loc
|
6013 | });
|
6014 | }
|
6015 |
|
6016 | return regex;
|
6017 | }
|
6018 |
|
6019 | function filterTokenLocation() {
|
6020 | var i, entry, token, tokens = [];
|
6021 |
|
6022 | for (i = 0; i < extra.tokens.length; ++i) {
|
6023 | entry = extra.tokens[i];
|
6024 | token = {
|
6025 | type: entry.type,
|
6026 | value: entry.value
|
6027 | };
|
6028 | if (extra.range) {
|
6029 | token.range = entry.range;
|
6030 | }
|
6031 | if (extra.loc) {
|
6032 | token.loc = entry.loc;
|
6033 | }
|
6034 | tokens.push(token);
|
6035 | }
|
6036 |
|
6037 | extra.tokens = tokens;
|
6038 | }
|
6039 |
|
6040 | function patch() {
|
6041 | if (extra.comments) {
|
6042 | extra.skipComment = skipComment;
|
6043 | skipComment = scanComment;
|
6044 | }
|
6045 |
|
6046 | if (typeof extra.tokens !== 'undefined') {
|
6047 | extra.advance = advance;
|
6048 | extra.scanRegExp = scanRegExp;
|
6049 |
|
6050 | advance = collectToken;
|
6051 | scanRegExp = collectRegex;
|
6052 | }
|
6053 | }
|
6054 |
|
6055 | function unpatch() {
|
6056 | if (typeof extra.skipComment === 'function') {
|
6057 | skipComment = extra.skipComment;
|
6058 | }
|
6059 |
|
6060 | if (typeof extra.scanRegExp === 'function') {
|
6061 | advance = extra.advance;
|
6062 | scanRegExp = extra.scanRegExp;
|
6063 | }
|
6064 | }
|
6065 |
|
6066 | // This is used to modify the delegate.
|
6067 |
|
6068 | function extend(object, properties) {
|
6069 | var entry, result = {};
|
6070 |
|
6071 | for (entry in object) {
|
6072 | if (object.hasOwnProperty(entry)) {
|
6073 | result[entry] = object[entry];
|
6074 | }
|
6075 | }
|
6076 |
|
6077 | for (entry in properties) {
|
6078 | if (properties.hasOwnProperty(entry)) {
|
6079 | result[entry] = properties[entry];
|
6080 | }
|
6081 | }
|
6082 |
|
6083 | return result;
|
6084 | }
|
6085 |
|
6086 | function tokenize(code, options) {
|
6087 | var toString,
|
6088 | token,
|
6089 | tokens;
|
6090 |
|
6091 | toString = String;
|
6092 | if (typeof code !== 'string' && !(code instanceof String)) {
|
6093 | code = toString(code);
|
6094 | }
|
6095 |
|
6096 | delegate = SyntaxTreeDelegate;
|
6097 | source = code;
|
6098 | index = 0;
|
6099 | lineNumber = (source.length > 0) ? 1 : 0;
|
6100 | lineStart = 0;
|
6101 | length = source.length;
|
6102 | lookahead = null;
|
6103 | state = {
|
6104 | allowKeyword: true,
|
6105 | allowIn: true,
|
6106 | labelSet: {},
|
6107 | inFunctionBody: false,
|
6108 | inIteration: false,
|
6109 | inSwitch: false,
|
6110 | lastCommentStart: -1
|
6111 | };
|
6112 |
|
6113 | extra = {};
|
6114 |
|
6115 | // Options matching.
|
6116 | options = options || {};
|
6117 |
|
6118 | // Of course we collect tokens here.
|
6119 | options.tokens = true;
|
6120 | extra.tokens = [];
|
6121 | extra.tokenize = true;
|
6122 | // The following two fields are necessary to compute the Regex tokens.
|
6123 | extra.openParenToken = -1;
|
6124 | extra.openCurlyToken = -1;
|
6125 |
|
6126 | extra.range = (typeof options.range === 'boolean') && options.range;
|
6127 | extra.loc = (typeof options.loc === 'boolean') && options.loc;
|
6128 |
|
6129 | if (typeof options.comment === 'boolean' && options.comment) {
|
6130 | extra.comments = [];
|
6131 | }
|
6132 | if (typeof options.tolerant === 'boolean' && options.tolerant) {
|
6133 | extra.errors = [];
|
6134 | }
|
6135 |
|
6136 | if (length > 0) {
|
6137 | if (typeof source[0] === 'undefined') {
|
6138 | // Try first to convert to a string. This is good as fast path
|
6139 | // for old IE which understands string indexing for string
|
6140 | // literals only and not for string object.
|
6141 | if (code instanceof String) {
|
6142 | source = code.valueOf();
|
6143 | }
|
6144 | }
|
6145 | }
|
6146 |
|
6147 | patch();
|
6148 |
|
6149 | try {
|
6150 | peek();
|
6151 | if (lookahead.type === Token.EOF) {
|
6152 | return extra.tokens;
|
6153 | }
|
6154 |
|
6155 | token = lex();
|
6156 | while (lookahead.type !== Token.EOF) {
|
6157 | try {
|
6158 | token = lex();
|
6159 | } catch (lexError) {
|
6160 | token = lookahead;
|
6161 | if (extra.errors) {
|
6162 | extra.errors.push(lexError);
|
6163 | // We have to break on the first error
|
6164 | // to avoid infinite loops.
|
6165 | break;
|
6166 | } else {
|
6167 | throw lexError;
|
6168 | }
|
6169 | }
|
6170 | }
|
6171 |
|
6172 | filterTokenLocation();
|
6173 | tokens = extra.tokens;
|
6174 | if (typeof extra.comments !== 'undefined') {
|
6175 | tokens.comments = extra.comments;
|
6176 | }
|
6177 | if (typeof extra.errors !== 'undefined') {
|
6178 | tokens.errors = extra.errors;
|
6179 | }
|
6180 | } catch (e) {
|
6181 | throw e;
|
6182 | } finally {
|
6183 | unpatch();
|
6184 | extra = {};
|
6185 | }
|
6186 | return tokens;
|
6187 | }
|
6188 |
|
6189 | function parse(code, options) {
|
6190 | var program, toString;
|
6191 |
|
6192 | toString = String;
|
6193 | if (typeof code !== 'string' && !(code instanceof String)) {
|
6194 | code = toString(code);
|
6195 | }
|
6196 |
|
6197 | delegate = SyntaxTreeDelegate;
|
6198 | source = code;
|
6199 | index = 0;
|
6200 | lineNumber = (source.length > 0) ? 1 : 0;
|
6201 | lineStart = 0;
|
6202 | length = source.length;
|
6203 | lookahead = null;
|
6204 | state = {
|
6205 | allowKeyword: false,
|
6206 | allowIn: true,
|
6207 | labelSet: {},
|
6208 | parenthesizedCount: 0,
|
6209 | inFunctionBody: false,
|
6210 | inIteration: false,
|
6211 | inSwitch: false,
|
6212 | inXJSChild: false,
|
6213 | inXJSTag: false,
|
6214 | lastCommentStart: -1,
|
6215 | yieldAllowed: false
|
6216 | };
|
6217 |
|
6218 | extra = {};
|
6219 | if (typeof options !== 'undefined') {
|
6220 | extra.range = (typeof options.range === 'boolean') && options.range;
|
6221 | extra.loc = (typeof options.loc === 'boolean') && options.loc;
|
6222 |
|
6223 | if (extra.loc && options.source !== null && options.source !== undefined) {
|
6224 | delegate = extend(delegate, {
|
6225 | 'postProcess': function (node) {
|
6226 | node.loc.source = toString(options.source);
|
6227 | return node;
|
6228 | }
|
6229 | });
|
6230 | }
|
6231 |
|
6232 | if (typeof options.tokens === 'boolean' && options.tokens) {
|
6233 | extra.tokens = [];
|
6234 | }
|
6235 | if (typeof options.comment === 'boolean' && options.comment) {
|
6236 | extra.comments = [];
|
6237 | }
|
6238 | if (typeof options.tolerant === 'boolean' && options.tolerant) {
|
6239 | extra.errors = [];
|
6240 | }
|
6241 | }
|
6242 |
|
6243 | if (length > 0) {
|
6244 | if (typeof source[0] === 'undefined') {
|
6245 | // Try first to convert to a string. This is good as fast path
|
6246 | // for old IE which understands string indexing for string
|
6247 | // literals only and not for string object.
|
6248 | if (code instanceof String) {
|
6249 | source = code.valueOf();
|
6250 | }
|
6251 | }
|
6252 | }
|
6253 |
|
6254 | patch();
|
6255 | try {
|
6256 | program = parseProgram();
|
6257 | if (typeof extra.comments !== 'undefined') {
|
6258 | program.comments = extra.comments;
|
6259 | }
|
6260 | if (typeof extra.tokens !== 'undefined') {
|
6261 | filterTokenLocation();
|
6262 | program.tokens = extra.tokens;
|
6263 | }
|
6264 | if (typeof extra.errors !== 'undefined') {
|
6265 | program.errors = extra.errors;
|
6266 | }
|
6267 | } catch (e) {
|
6268 | throw e;
|
6269 | } finally {
|
6270 | unpatch();
|
6271 | extra = {};
|
6272 | }
|
6273 |
|
6274 | return program;
|
6275 | }
|
6276 |
|
6277 | // Sync with *.json manifests.
|
6278 | exports.version = '4001.3001.0000-dev-harmony-fb';
|
6279 |
|
6280 | exports.tokenize = tokenize;
|
6281 |
|
6282 | exports.parse = parse;
|
6283 |
|
6284 | // Deep copy.
|
6285 | exports.Syntax = (function () {
|
6286 | var name, types = {};
|
6287 |
|
6288 | if (typeof Object.create === 'function') {
|
6289 | types = Object.create(null);
|
6290 | }
|
6291 |
|
6292 | for (name in Syntax) {
|
6293 | if (Syntax.hasOwnProperty(name)) {
|
6294 | types[name] = Syntax[name];
|
6295 | }
|
6296 | }
|
6297 |
|
6298 | if (typeof Object.freeze === 'function') {
|
6299 | Object.freeze(types);
|
6300 | }
|
6301 |
|
6302 | return types;
|
6303 | }());
|
6304 |
|
6305 | }));
|
6306 | /* vim: set sw=4 ts=4 et tw=80 : */
|
6307 |
|
\ | No newline at end of file |