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35 |
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36 |
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37 | (function () {
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38 | 'use strict';
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39 |
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40 | var Syntax,
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41 | Precedence,
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42 | BinaryPrecedence,
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43 | SourceNode,
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44 | estraverse,
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45 | esutils,
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46 | isArray,
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47 | base,
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48 | indent,
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49 | json,
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50 | renumber,
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51 | hexadecimal,
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52 | quotes,
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53 | escapeless,
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54 | newline,
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55 | space,
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56 | parentheses,
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57 | semicolons,
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58 | safeConcatenation,
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59 | directive,
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60 | extra,
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61 | parse,
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62 | sourceMap,
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63 | sourceCode,
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64 | preserveBlankLines,
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65 | FORMAT_MINIFY,
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66 | FORMAT_DEFAULTS;
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67 |
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68 | estraverse = require('estraverse');
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69 | esutils = require('esutils');
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70 |
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71 | Syntax = estraverse.Syntax;
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72 |
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73 |
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74 | function isExpression(node) {
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75 | return CodeGenerator.Expression.hasOwnProperty(node.type);
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76 | }
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77 |
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78 |
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79 | function isStatement(node) {
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80 | return CodeGenerator.Statement.hasOwnProperty(node.type);
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81 | }
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82 |
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83 | Precedence = {
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84 | Sequence: 0,
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85 | Yield: 1,
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86 | Await: 1,
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87 | Assignment: 1,
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88 | Conditional: 2,
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89 | ArrowFunction: 2,
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90 | LogicalOR: 3,
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91 | LogicalAND: 4,
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92 | BitwiseOR: 5,
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93 | BitwiseXOR: 6,
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94 | BitwiseAND: 7,
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95 | Equality: 8,
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96 | Relational: 9,
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97 | BitwiseSHIFT: 10,
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98 | Additive: 11,
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99 | Multiplicative: 12,
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100 | Unary: 13,
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101 | Postfix: 14,
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102 | Call: 15,
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103 | New: 16,
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104 | TaggedTemplate: 17,
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105 | Member: 18,
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106 | Primary: 19
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107 | };
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108 |
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109 | BinaryPrecedence = {
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110 | '||': Precedence.LogicalOR,
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111 | '&&': Precedence.LogicalAND,
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112 | '|': Precedence.BitwiseOR,
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113 | '^': Precedence.BitwiseXOR,
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114 | '&': Precedence.BitwiseAND,
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115 | '==': Precedence.Equality,
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116 | '!=': Precedence.Equality,
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117 | '===': Precedence.Equality,
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118 | '!==': Precedence.Equality,
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119 | 'is': Precedence.Equality,
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120 | 'isnt': Precedence.Equality,
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121 | '<': Precedence.Relational,
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122 | '>': Precedence.Relational,
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123 | '<=': Precedence.Relational,
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124 | '>=': Precedence.Relational,
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125 | 'in': Precedence.Relational,
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126 | 'instanceof': Precedence.Relational,
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127 | '<<': Precedence.BitwiseSHIFT,
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128 | '>>': Precedence.BitwiseSHIFT,
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129 | '>>>': Precedence.BitwiseSHIFT,
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130 | '+': Precedence.Additive,
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131 | '-': Precedence.Additive,
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132 | '*': Precedence.Multiplicative,
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133 | '%': Precedence.Multiplicative,
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134 | '/': Precedence.Multiplicative
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135 | };
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136 |
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137 |
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138 | var F_ALLOW_IN = 1,
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139 | F_ALLOW_CALL = 1 << 1,
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140 | F_ALLOW_UNPARATH_NEW = 1 << 2,
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141 | F_FUNC_BODY = 1 << 3,
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142 | F_DIRECTIVE_CTX = 1 << 4,
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143 | F_SEMICOLON_OPT = 1 << 5;
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144 |
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145 |
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146 |
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147 |
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148 |
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149 |
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150 | var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
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151 | E_TTF = F_ALLOW_IN | F_ALLOW_CALL,
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152 | E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
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153 | E_TFF = F_ALLOW_IN,
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154 | E_FFT = F_ALLOW_UNPARATH_NEW,
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155 | E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;
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156 |
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157 |
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158 |
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159 |
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160 |
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161 |
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162 |
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163 | var S_TFFF = F_ALLOW_IN,
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164 | S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT,
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165 | S_FFFF = 0x00,
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166 | S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX,
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167 | S_TTFF = F_ALLOW_IN | F_FUNC_BODY;
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168 |
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169 | function getDefaultOptions() {
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170 |
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171 | return {
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172 | indent: null,
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173 | base: null,
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174 | parse: null,
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175 | comment: false,
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176 | format: {
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177 | indent: {
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178 | style: ' ',
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179 | base: 0,
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180 | adjustMultilineComment: false
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181 | },
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182 | newline: '\n',
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183 | space: ' ',
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184 | json: false,
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185 | renumber: false,
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186 | hexadecimal: false,
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187 | quotes: 'single',
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188 | escapeless: false,
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189 | compact: false,
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190 | parentheses: true,
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191 | semicolons: true,
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192 | safeConcatenation: false,
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193 | preserveBlankLines: false
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194 | },
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195 | moz: {
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196 | comprehensionExpressionStartsWithAssignment: false,
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197 | starlessGenerator: false
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198 | },
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199 | sourceMap: null,
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200 | sourceMapRoot: null,
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201 | sourceMapWithCode: false,
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202 | directive: false,
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203 | raw: true,
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204 | verbatim: null,
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205 | sourceCode: null
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206 | };
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207 | }
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208 |
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209 | function stringRepeat(str, num) {
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210 | var result = '';
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211 |
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212 | for (num |= 0; num > 0; num >>>= 1, str += str) {
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213 | if (num & 1) {
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214 | result += str;
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215 | }
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216 | }
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217 |
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218 | return result;
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219 | }
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220 |
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221 | isArray = Array.isArray;
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222 | if (!isArray) {
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223 | isArray = function isArray(array) {
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224 | return Object.prototype.toString.call(array) === '[object Array]';
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225 | };
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226 | }
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227 |
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228 | function hasLineTerminator(str) {
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229 | return (/[\r\n]/g).test(str);
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230 | }
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231 |
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232 | function endsWithLineTerminator(str) {
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233 | var len = str.length;
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234 | return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
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235 | }
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236 |
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237 | function merge(target, override) {
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238 | var key;
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239 | for (key in override) {
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240 | if (override.hasOwnProperty(key)) {
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241 | target[key] = override[key];
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242 | }
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243 | }
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244 | return target;
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245 | }
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246 |
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247 | function updateDeeply(target, override) {
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248 | var key, val;
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249 |
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250 | function isHashObject(target) {
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251 | return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
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252 | }
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253 |
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254 | for (key in override) {
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255 | if (override.hasOwnProperty(key)) {
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256 | val = override[key];
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257 | if (isHashObject(val)) {
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258 | if (isHashObject(target[key])) {
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259 | updateDeeply(target[key], val);
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260 | } else {
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261 | target[key] = updateDeeply({}, val);
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262 | }
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263 | } else {
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264 | target[key] = val;
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265 | }
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266 | }
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267 | }
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268 | return target;
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269 | }
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270 |
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271 | function generateNumber(value) {
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272 | var result, point, temp, exponent, pos;
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273 |
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274 | if (value !== value) {
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275 | throw new Error('Numeric literal whose value is NaN');
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276 | }
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277 | if (value < 0 || (value === 0 && 1 / value < 0)) {
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278 | throw new Error('Numeric literal whose value is negative');
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279 | }
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280 |
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281 | if (value === 1 / 0) {
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282 | return json ? 'null' : renumber ? '1e400' : '1e+400';
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283 | }
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284 |
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285 | result = '' + value;
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286 | if (!renumber || result.length < 3) {
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287 | return result;
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288 | }
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289 |
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290 | point = result.indexOf('.');
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291 | if (!json && result.charCodeAt(0) === 0x30 && point === 1) {
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292 | point = 0;
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293 | result = result.slice(1);
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294 | }
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295 | temp = result;
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296 | result = result.replace('e+', 'e');
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297 | exponent = 0;
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298 | if ((pos = temp.indexOf('e')) > 0) {
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299 | exponent = +temp.slice(pos + 1);
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300 | temp = temp.slice(0, pos);
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301 | }
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302 | if (point >= 0) {
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303 | exponent -= temp.length - point - 1;
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304 | temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
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305 | }
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306 | pos = 0;
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307 | while (temp.charCodeAt(temp.length + pos - 1) === 0x30 ) {
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308 | --pos;
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309 | }
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310 | if (pos !== 0) {
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311 | exponent -= pos;
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312 | temp = temp.slice(0, pos);
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313 | }
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314 | if (exponent !== 0) {
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315 | temp += 'e' + exponent;
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316 | }
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317 | if ((temp.length < result.length ||
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318 | (hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length)) &&
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319 | +temp === value) {
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320 | result = temp;
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321 | }
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322 |
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323 | return result;
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324 | }
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325 |
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326 |
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327 |
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328 |
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329 | function escapeRegExpCharacter(ch, previousIsBackslash) {
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330 |
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331 | if ((ch & ~1) === 0x2028) {
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332 | return (previousIsBackslash ? 'u' : '\\u') + ((ch === 0x2028) ? '2028' : '2029');
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333 | } else if (ch === 10 || ch === 13) {
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334 | return (previousIsBackslash ? '' : '\\') + ((ch === 10) ? 'n' : 'r');
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335 | }
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336 | return String.fromCharCode(ch);
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337 | }
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338 |
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339 | function generateRegExp(reg) {
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340 | var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;
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341 |
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342 | result = reg.toString();
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343 |
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344 | if (reg.source) {
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345 |
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346 | match = result.match(/\/([^/]*)$/);
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347 | if (!match) {
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348 | return result;
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349 | }
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350 |
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351 | flags = match[1];
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352 | result = '';
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353 |
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354 | characterInBrack = false;
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355 | previousIsBackslash = false;
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356 | for (i = 0, iz = reg.source.length; i < iz; ++i) {
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357 | ch = reg.source.charCodeAt(i);
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358 |
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359 | if (!previousIsBackslash) {
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360 | if (characterInBrack) {
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361 | if (ch === 93) {
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362 | characterInBrack = false;
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363 | }
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364 | } else {
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365 | if (ch === 47) {
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366 | result += '\\';
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367 | } else if (ch === 91) {
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368 | characterInBrack = true;
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369 | }
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370 | }
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371 | result += escapeRegExpCharacter(ch, previousIsBackslash);
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372 | previousIsBackslash = ch === 92;
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373 | } else {
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374 |
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375 | result += escapeRegExpCharacter(ch, previousIsBackslash);
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376 |
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377 | previousIsBackslash = false;
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378 | }
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379 | }
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380 |
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381 | return '/' + result + '/' + flags;
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382 | }
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383 |
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384 | return result;
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385 | }
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386 |
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387 | function escapeAllowedCharacter(code, next) {
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388 | var hex;
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389 |
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390 | if (code === 0x08 ) {
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391 | return '\\b';
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392 | }
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393 |
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394 | if (code === 0x0C ) {
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395 | return '\\f';
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396 | }
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397 |
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398 | if (code === 0x09 ) {
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399 | return '\\t';
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400 | }
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401 |
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402 | hex = code.toString(16).toUpperCase();
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403 | if (json || code > 0xFF) {
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404 | return '\\u' + '0000'.slice(hex.length) + hex;
|
405 | } else if (code === 0x0000 && !esutils.code.isDecimalDigit(next)) {
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406 | return '\\0';
|
407 | } else if (code === 0x000B ) {
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408 | return '\\x0B';
|
409 | } else {
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410 | return '\\x' + '00'.slice(hex.length) + hex;
|
411 | }
|
412 | }
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413 |
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414 | function escapeDisallowedCharacter(code) {
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415 | if (code === 0x5C ) {
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416 | return '\\\\';
|
417 | }
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418 |
|
419 | if (code === 0x0A ) {
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420 | return '\\n';
|
421 | }
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422 |
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423 | if (code === 0x0D ) {
|
424 | return '\\r';
|
425 | }
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426 |
|
427 | if (code === 0x2028) {
|
428 | return '\\u2028';
|
429 | }
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430 |
|
431 | if (code === 0x2029) {
|
432 | return '\\u2029';
|
433 | }
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434 |
|
435 | throw new Error('Incorrectly classified character');
|
436 | }
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437 |
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438 | function escapeDirective(str) {
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439 | var i, iz, code, quote;
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440 |
|
441 | quote = quotes === 'double' ? '"' : '\'';
|
442 | for (i = 0, iz = str.length; i < iz; ++i) {
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443 | code = str.charCodeAt(i);
|
444 | if (code === 0x27 ) {
|
445 | quote = '"';
|
446 | break;
|
447 | } else if (code === 0x22 ) {
|
448 | quote = '\'';
|
449 | break;
|
450 | } else if (code === 0x5C ) {
|
451 | ++i;
|
452 | }
|
453 | }
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454 |
|
455 | return quote + str + quote;
|
456 | }
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457 |
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458 | function escapeString(str) {
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459 | var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;
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460 |
|
461 | for (i = 0, len = str.length; i < len; ++i) {
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462 | code = str.charCodeAt(i);
|
463 | if (code === 0x27 ) {
|
464 | ++singleQuotes;
|
465 | } else if (code === 0x22 ) {
|
466 | ++doubleQuotes;
|
467 | } else if (code === 0x2F && json) {
|
468 | result += '\\';
|
469 | } else if (esutils.code.isLineTerminator(code) || code === 0x5C ) {
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470 | result += escapeDisallowedCharacter(code);
|
471 | continue;
|
472 | } else if ((json && code < 0x20 ) || !(json || escapeless || (code >= 0x20 && code <= 0x7E ))) {
|
473 | result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
|
474 | continue;
|
475 | }
|
476 | result += String.fromCharCode(code);
|
477 | }
|
478 |
|
479 | single = !(quotes === 'double' || (quotes === 'auto' && doubleQuotes < singleQuotes));
|
480 | quote = single ? '\'' : '"';
|
481 |
|
482 | if (!(single ? singleQuotes : doubleQuotes)) {
|
483 | return quote + result + quote;
|
484 | }
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485 |
|
486 | str = result;
|
487 | result = quote;
|
488 |
|
489 | for (i = 0, len = str.length; i < len; ++i) {
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490 | code = str.charCodeAt(i);
|
491 | if ((code === 0x27 && single) || (code === 0x22 && !single)) {
|
492 | result += '\\';
|
493 | }
|
494 | result += String.fromCharCode(code);
|
495 | }
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496 |
|
497 | return result + quote;
|
498 | }
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499 |
|
500 | |
501 |
|
502 |
|
503 |
|
504 | function flattenToString(arr) {
|
505 | var i, iz, elem, result = '';
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506 | for (i = 0, iz = arr.length; i < iz; ++i) {
|
507 | elem = arr[i];
|
508 | result += isArray(elem) ? flattenToString(elem) : elem;
|
509 | }
|
510 | return result;
|
511 | }
|
512 |
|
513 | |
514 |
|
515 |
|
516 | function toSourceNodeWhenNeeded(generated, node) {
|
517 | if (!sourceMap) {
|
518 |
|
519 |
|
520 |
|
521 | if (isArray(generated)) {
|
522 | return flattenToString(generated);
|
523 | } else {
|
524 | return generated;
|
525 | }
|
526 | }
|
527 | if (node == null) {
|
528 | if (generated instanceof SourceNode) {
|
529 | return generated;
|
530 | } else {
|
531 | node = {};
|
532 | }
|
533 | }
|
534 | if (node.loc == null) {
|
535 | return new SourceNode(null, null, sourceMap, generated, node.name || null);
|
536 | }
|
537 | return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.name || null);
|
538 | }
|
539 |
|
540 | function noEmptySpace() {
|
541 | return (space) ? space : ' ';
|
542 | }
|
543 |
|
544 | function join(left, right) {
|
545 | var leftSource,
|
546 | rightSource,
|
547 | leftCharCode,
|
548 | rightCharCode;
|
549 |
|
550 | leftSource = toSourceNodeWhenNeeded(left).toString();
|
551 | if (leftSource.length === 0) {
|
552 | return [right];
|
553 | }
|
554 |
|
555 | rightSource = toSourceNodeWhenNeeded(right).toString();
|
556 | if (rightSource.length === 0) {
|
557 | return [left];
|
558 | }
|
559 |
|
560 | leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
|
561 | rightCharCode = rightSource.charCodeAt(0);
|
562 |
|
563 | if ((leftCharCode === 0x2B || leftCharCode === 0x2D ) && leftCharCode === rightCharCode ||
|
564 | esutils.code.isIdentifierPart(leftCharCode) && esutils.code.isIdentifierPart(rightCharCode) ||
|
565 | leftCharCode === 0x2F && rightCharCode === 0x69 ) {
|
566 | return [left, noEmptySpace(), right];
|
567 | } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) ||
|
568 | esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
|
569 | return [left, right];
|
570 | }
|
571 | return [left, space, right];
|
572 | }
|
573 |
|
574 | function addIndent(stmt) {
|
575 | return [base, stmt];
|
576 | }
|
577 |
|
578 | function withIndent(fn) {
|
579 | var previousBase;
|
580 | previousBase = base;
|
581 | base += indent;
|
582 | fn(base);
|
583 | base = previousBase;
|
584 | }
|
585 |
|
586 | function calculateSpaces(str) {
|
587 | var i;
|
588 | for (i = str.length - 1; i >= 0; --i) {
|
589 | if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
|
590 | break;
|
591 | }
|
592 | }
|
593 | return (str.length - 1) - i;
|
594 | }
|
595 |
|
596 | function adjustMultilineComment(value, specialBase) {
|
597 | var array, i, len, line, j, spaces, previousBase, sn;
|
598 |
|
599 | array = value.split(/\r\n|[\r\n]/);
|
600 | spaces = Number.MAX_VALUE;
|
601 |
|
602 |
|
603 | for (i = 1, len = array.length; i < len; ++i) {
|
604 | line = array[i];
|
605 | j = 0;
|
606 | while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
|
607 | ++j;
|
608 | }
|
609 | if (spaces > j) {
|
610 | spaces = j;
|
611 | }
|
612 | }
|
613 |
|
614 | if (typeof specialBase !== 'undefined') {
|
615 |
|
616 |
|
617 |
|
618 |
|
619 |
|
620 |
|
621 | previousBase = base;
|
622 | if (array[1][spaces] === '*') {
|
623 | specialBase += ' ';
|
624 | }
|
625 | base = specialBase;
|
626 | } else {
|
627 | if (spaces & 1) {
|
628 |
|
629 |
|
630 |
|
631 |
|
632 |
|
633 | --spaces;
|
634 | }
|
635 | previousBase = base;
|
636 | }
|
637 |
|
638 | for (i = 1, len = array.length; i < len; ++i) {
|
639 | sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
|
640 | array[i] = sourceMap ? sn.join('') : sn;
|
641 | }
|
642 |
|
643 | base = previousBase;
|
644 |
|
645 | return array.join('\n');
|
646 | }
|
647 |
|
648 | function generateComment(comment, specialBase) {
|
649 | if (comment.type === 'Line') {
|
650 | if (endsWithLineTerminator(comment.value)) {
|
651 | return '//' + comment.value;
|
652 | } else {
|
653 |
|
654 | var result = '//' + comment.value;
|
655 | if (!preserveBlankLines) {
|
656 | result += '\n';
|
657 | }
|
658 | return result;
|
659 | }
|
660 | }
|
661 | if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
|
662 | return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
|
663 | }
|
664 | return '/*' + comment.value + '*/';
|
665 | }
|
666 |
|
667 | function addComments(stmt, result) {
|
668 | var i, len, comment, save, tailingToStatement, specialBase, fragment,
|
669 | extRange, range, prevRange, prefix, infix, suffix, count;
|
670 |
|
671 | if (stmt.leadingComments && stmt.leadingComments.length > 0) {
|
672 | save = result;
|
673 |
|
674 | if (preserveBlankLines) {
|
675 | comment = stmt.leadingComments[0];
|
676 | result = [];
|
677 |
|
678 | extRange = comment.extendedRange;
|
679 | range = comment.range;
|
680 |
|
681 | prefix = sourceCode.substring(extRange[0], range[0]);
|
682 | count = (prefix.match(/\n/g) || []).length;
|
683 | if (count > 0) {
|
684 | result.push(stringRepeat('\n', count));
|
685 | result.push(addIndent(generateComment(comment)));
|
686 | } else {
|
687 | result.push(prefix);
|
688 | result.push(generateComment(comment));
|
689 | }
|
690 |
|
691 | prevRange = range;
|
692 |
|
693 | for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
|
694 | comment = stmt.leadingComments[i];
|
695 | range = comment.range;
|
696 |
|
697 | infix = sourceCode.substring(prevRange[1], range[0]);
|
698 | count = (infix.match(/\n/g) || []).length;
|
699 | result.push(stringRepeat('\n', count));
|
700 | result.push(addIndent(generateComment(comment)));
|
701 |
|
702 | prevRange = range;
|
703 | }
|
704 |
|
705 | suffix = sourceCode.substring(range[1], extRange[1]);
|
706 | count = (suffix.match(/\n/g) || []).length;
|
707 | result.push(stringRepeat('\n', count));
|
708 | } else {
|
709 | comment = stmt.leadingComments[0];
|
710 | result = [];
|
711 | if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
|
712 | result.push('\n');
|
713 | }
|
714 | result.push(generateComment(comment));
|
715 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
716 | result.push('\n');
|
717 | }
|
718 |
|
719 | for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
|
720 | comment = stmt.leadingComments[i];
|
721 | fragment = [generateComment(comment)];
|
722 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
723 | fragment.push('\n');
|
724 | }
|
725 | result.push(addIndent(fragment));
|
726 | }
|
727 | }
|
728 |
|
729 | result.push(addIndent(save));
|
730 | }
|
731 |
|
732 | if (stmt.trailingComments) {
|
733 |
|
734 | if (preserveBlankLines) {
|
735 | comment = stmt.trailingComments[0];
|
736 | extRange = comment.extendedRange;
|
737 | range = comment.range;
|
738 |
|
739 | prefix = sourceCode.substring(extRange[0], range[0]);
|
740 | count = (prefix.match(/\n/g) || []).length;
|
741 |
|
742 | if (count > 0) {
|
743 | result.push(stringRepeat('\n', count));
|
744 | result.push(addIndent(generateComment(comment)));
|
745 | } else {
|
746 | result.push(prefix);
|
747 | result.push(generateComment(comment));
|
748 | }
|
749 | } else {
|
750 | tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
|
751 | specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([base, result, indent]).toString()));
|
752 | for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
|
753 | comment = stmt.trailingComments[i];
|
754 | if (tailingToStatement) {
|
755 |
|
756 |
|
757 |
|
758 |
|
759 |
|
760 | if (i === 0) {
|
761 |
|
762 | result = [result, indent];
|
763 | } else {
|
764 | result = [result, specialBase];
|
765 | }
|
766 | result.push(generateComment(comment, specialBase));
|
767 | } else {
|
768 | result = [result, addIndent(generateComment(comment))];
|
769 | }
|
770 | if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
771 | result = [result, '\n'];
|
772 | }
|
773 | }
|
774 | }
|
775 | }
|
776 |
|
777 | return result;
|
778 | }
|
779 |
|
780 | function generateBlankLines(start, end, result) {
|
781 | var j, newlineCount = 0;
|
782 |
|
783 | for (j = start; j < end; j++) {
|
784 | if (sourceCode[j] === '\n') {
|
785 | newlineCount++;
|
786 | }
|
787 | }
|
788 |
|
789 | for (j = 1; j < newlineCount; j++) {
|
790 | result.push(newline);
|
791 | }
|
792 | }
|
793 |
|
794 | function parenthesize(text, current, should) {
|
795 | if (current < should) {
|
796 | return ['(', text, ')'];
|
797 | }
|
798 | return text;
|
799 | }
|
800 |
|
801 | function generateVerbatimString(string) {
|
802 | var i, iz, result;
|
803 | result = string.split(/\r\n|\n/);
|
804 | for (i = 1, iz = result.length; i < iz; i++) {
|
805 | result[i] = newline + base + result[i];
|
806 | }
|
807 | return result;
|
808 | }
|
809 |
|
810 | function generateVerbatim(expr, precedence) {
|
811 | var verbatim, result, prec;
|
812 | verbatim = expr[extra.verbatim];
|
813 |
|
814 | if (typeof verbatim === 'string') {
|
815 | result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
|
816 | } else {
|
817 |
|
818 | result = generateVerbatimString(verbatim.content);
|
819 | prec = (verbatim.precedence != null) ? verbatim.precedence : Precedence.Sequence;
|
820 | result = parenthesize(result, prec, precedence);
|
821 | }
|
822 |
|
823 | return toSourceNodeWhenNeeded(result, expr);
|
824 | }
|
825 |
|
826 | function CodeGenerator() {
|
827 | }
|
828 |
|
829 |
|
830 |
|
831 | CodeGenerator.prototype.maybeBlock = function(stmt, flags) {
|
832 | var result, noLeadingComment, that = this;
|
833 |
|
834 | noLeadingComment = !extra.comment || !stmt.leadingComments;
|
835 |
|
836 | if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
|
837 | return [space, this.generateStatement(stmt, flags)];
|
838 | }
|
839 |
|
840 | if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
|
841 | return ';';
|
842 | }
|
843 |
|
844 | withIndent(function () {
|
845 | result = [
|
846 | newline,
|
847 | addIndent(that.generateStatement(stmt, flags))
|
848 | ];
|
849 | });
|
850 |
|
851 | return result;
|
852 | };
|
853 |
|
854 | CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
|
855 | var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
|
856 | if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
|
857 | return [result, space];
|
858 | }
|
859 | if (ends) {
|
860 | return [result, base];
|
861 | }
|
862 | return [result, newline, base];
|
863 | };
|
864 |
|
865 | function generateIdentifier(node) {
|
866 | return toSourceNodeWhenNeeded(node.name, node);
|
867 | }
|
868 |
|
869 | function generateAsyncPrefix(node, spaceRequired) {
|
870 | return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
|
871 | }
|
872 |
|
873 | function generateStarSuffix(node) {
|
874 | var isGenerator = node.generator && !extra.moz.starlessGenerator;
|
875 | return isGenerator ? '*' + space : '';
|
876 | }
|
877 |
|
878 | function generateMethodPrefix(prop) {
|
879 | var func = prop.value;
|
880 | if (func.async) {
|
881 | return generateAsyncPrefix(func, !prop.computed);
|
882 | } else {
|
883 |
|
884 | return generateStarSuffix(func) ? '*' : '';
|
885 | }
|
886 | }
|
887 |
|
888 | CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
|
889 | if (node.type === Syntax.Identifier) {
|
890 | return generateIdentifier(node);
|
891 | }
|
892 | return this.generateExpression(node, precedence, flags);
|
893 | };
|
894 |
|
895 | CodeGenerator.prototype.generateFunctionParams = function (node) {
|
896 | var i, iz, result, hasDefault;
|
897 |
|
898 | hasDefault = false;
|
899 |
|
900 | if (node.type === Syntax.ArrowFunctionExpression &&
|
901 | !node.rest && (!node.defaults || node.defaults.length === 0) &&
|
902 | node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
|
903 |
|
904 | result = [generateAsyncPrefix(node, true), generateIdentifier(node.params[0])];
|
905 | } else {
|
906 | result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
|
907 | result.push('(');
|
908 | if (node.defaults) {
|
909 | hasDefault = true;
|
910 | }
|
911 | for (i = 0, iz = node.params.length; i < iz; ++i) {
|
912 | if (hasDefault && node.defaults[i]) {
|
913 |
|
914 | result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
|
915 | } else {
|
916 | result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
|
917 | }
|
918 | if (i + 1 < iz) {
|
919 | result.push(',' + space);
|
920 | }
|
921 | }
|
922 |
|
923 | if (node.rest) {
|
924 | if (node.params.length) {
|
925 | result.push(',' + space);
|
926 | }
|
927 | result.push('...');
|
928 | result.push(generateIdentifier(node.rest));
|
929 | }
|
930 |
|
931 | result.push(')');
|
932 | }
|
933 |
|
934 | return result;
|
935 | };
|
936 |
|
937 | CodeGenerator.prototype.generateFunctionBody = function (node) {
|
938 | var result, expr;
|
939 |
|
940 | result = this.generateFunctionParams(node);
|
941 |
|
942 | if (node.type === Syntax.ArrowFunctionExpression) {
|
943 | result.push(space);
|
944 | result.push('=>');
|
945 | }
|
946 |
|
947 | if (node.expression) {
|
948 | result.push(space);
|
949 | expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
|
950 | if (expr.toString().charAt(0) === '{') {
|
951 | expr = ['(', expr, ')'];
|
952 | }
|
953 | result.push(expr);
|
954 | } else {
|
955 | result.push(this.maybeBlock(node.body, S_TTFF));
|
956 | }
|
957 |
|
958 | return result;
|
959 | };
|
960 |
|
961 | CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
|
962 | var result = ['for' + space + '('], that = this;
|
963 | withIndent(function () {
|
964 | if (stmt.left.type === Syntax.VariableDeclaration) {
|
965 | withIndent(function () {
|
966 | result.push(stmt.left.kind + noEmptySpace());
|
967 | result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
|
968 | });
|
969 | } else {
|
970 | result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
|
971 | }
|
972 |
|
973 | result = join(result, operator);
|
974 | result = [join(
|
975 | result,
|
976 | that.generateExpression(stmt.right, Precedence.Sequence, E_TTT)
|
977 | ), ')'];
|
978 | });
|
979 | result.push(this.maybeBlock(stmt.body, flags));
|
980 | return result;
|
981 | };
|
982 |
|
983 | CodeGenerator.prototype.generatePropertyKey = function (expr, computed) {
|
984 | var result = [];
|
985 |
|
986 | if (computed) {
|
987 | result.push('[');
|
988 | }
|
989 |
|
990 | result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));
|
991 | if (computed) {
|
992 | result.push(']');
|
993 | }
|
994 |
|
995 | return result;
|
996 | };
|
997 |
|
998 | CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
|
999 | if (Precedence.Assignment < precedence) {
|
1000 | flags |= F_ALLOW_IN;
|
1001 | }
|
1002 |
|
1003 | return parenthesize(
|
1004 | [
|
1005 | this.generateExpression(left, Precedence.Call, flags),
|
1006 | space + operator + space,
|
1007 | this.generateExpression(right, Precedence.Assignment, flags)
|
1008 | ],
|
1009 | Precedence.Assignment,
|
1010 | precedence
|
1011 | );
|
1012 | };
|
1013 |
|
1014 | CodeGenerator.prototype.semicolon = function (flags) {
|
1015 | if (!semicolons && flags & F_SEMICOLON_OPT) {
|
1016 | return '';
|
1017 | }
|
1018 | return ';';
|
1019 | };
|
1020 |
|
1021 |
|
1022 |
|
1023 | CodeGenerator.Statement = {
|
1024 |
|
1025 | BlockStatement: function (stmt, flags) {
|
1026 | var range, content, result = ['{', newline], that = this;
|
1027 |
|
1028 | withIndent(function () {
|
1029 |
|
1030 | if (stmt.body.length === 0 && preserveBlankLines) {
|
1031 | range = stmt.range;
|
1032 | if (range[1] - range[0] > 2) {
|
1033 | content = sourceCode.substring(range[0] + 1, range[1] - 1);
|
1034 | if (content[0] === '\n') {
|
1035 | result = ['{'];
|
1036 | }
|
1037 | result.push(content);
|
1038 | }
|
1039 | }
|
1040 |
|
1041 | var i, iz, fragment, bodyFlags;
|
1042 | bodyFlags = S_TFFF;
|
1043 | if (flags & F_FUNC_BODY) {
|
1044 | bodyFlags |= F_DIRECTIVE_CTX;
|
1045 | }
|
1046 |
|
1047 | for (i = 0, iz = stmt.body.length; i < iz; ++i) {
|
1048 | if (preserveBlankLines) {
|
1049 |
|
1050 | if (i === 0) {
|
1051 | if (stmt.body[0].leadingComments) {
|
1052 | range = stmt.body[0].leadingComments[0].extendedRange;
|
1053 | content = sourceCode.substring(range[0], range[1]);
|
1054 | if (content[0] === '\n') {
|
1055 | result = ['{'];
|
1056 | }
|
1057 | }
|
1058 | if (!stmt.body[0].leadingComments) {
|
1059 | generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
|
1060 | }
|
1061 | }
|
1062 |
|
1063 |
|
1064 | if (i > 0) {
|
1065 | if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
|
1066 | generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
|
1067 | }
|
1068 | }
|
1069 | }
|
1070 |
|
1071 | if (i === iz - 1) {
|
1072 | bodyFlags |= F_SEMICOLON_OPT;
|
1073 | }
|
1074 |
|
1075 | if (stmt.body[i].leadingComments && preserveBlankLines) {
|
1076 | fragment = that.generateStatement(stmt.body[i], bodyFlags);
|
1077 | } else {
|
1078 | fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
|
1079 | }
|
1080 |
|
1081 | result.push(fragment);
|
1082 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
1083 | if (preserveBlankLines && i < iz - 1) {
|
1084 |
|
1085 |
|
1086 | if (!stmt.body[i + 1].leadingComments) {
|
1087 | result.push(newline);
|
1088 | }
|
1089 | } else {
|
1090 | result.push(newline);
|
1091 | }
|
1092 | }
|
1093 |
|
1094 | if (preserveBlankLines) {
|
1095 |
|
1096 | if (i === iz - 1) {
|
1097 | if (!stmt.body[i].trailingComments) {
|
1098 | generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
|
1099 | }
|
1100 | }
|
1101 | }
|
1102 | }
|
1103 | });
|
1104 |
|
1105 | result.push(addIndent('}'));
|
1106 | return result;
|
1107 | },
|
1108 |
|
1109 | BreakStatement: function (stmt, flags) {
|
1110 | if (stmt.label) {
|
1111 | return 'break ' + stmt.label.name + this.semicolon(flags);
|
1112 | }
|
1113 | return 'break' + this.semicolon(flags);
|
1114 | },
|
1115 |
|
1116 | ContinueStatement: function (stmt, flags) {
|
1117 | if (stmt.label) {
|
1118 | return 'continue ' + stmt.label.name + this.semicolon(flags);
|
1119 | }
|
1120 | return 'continue' + this.semicolon(flags);
|
1121 | },
|
1122 |
|
1123 | ClassBody: function (stmt, flags) {
|
1124 | var result = [ '{', newline], that = this;
|
1125 |
|
1126 | withIndent(function (indent) {
|
1127 | var i, iz;
|
1128 |
|
1129 | for (i = 0, iz = stmt.body.length; i < iz; ++i) {
|
1130 | result.push(indent);
|
1131 | result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
|
1132 | if (i + 1 < iz) {
|
1133 | result.push(newline);
|
1134 | }
|
1135 | }
|
1136 | });
|
1137 |
|
1138 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
1139 | result.push(newline);
|
1140 | }
|
1141 | result.push(base);
|
1142 | result.push('}');
|
1143 | return result;
|
1144 | },
|
1145 |
|
1146 | ClassDeclaration: function (stmt, flags) {
|
1147 | var result, fragment;
|
1148 | result = ['class ' + stmt.id.name];
|
1149 | if (stmt.superClass) {
|
1150 | fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Assignment, E_TTT));
|
1151 | result = join(result, fragment);
|
1152 | }
|
1153 | result.push(space);
|
1154 | result.push(this.generateStatement(stmt.body, S_TFFT));
|
1155 | return result;
|
1156 | },
|
1157 |
|
1158 | DirectiveStatement: function (stmt, flags) {
|
1159 | if (extra.raw && stmt.raw) {
|
1160 | return stmt.raw + this.semicolon(flags);
|
1161 | }
|
1162 | return escapeDirective(stmt.directive) + this.semicolon(flags);
|
1163 | },
|
1164 |
|
1165 | DoWhileStatement: function (stmt, flags) {
|
1166 |
|
1167 | var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
|
1168 | result = this.maybeBlockSuffix(stmt.body, result);
|
1169 | return join(result, [
|
1170 | 'while' + space + '(',
|
1171 | this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
|
1172 | ')' + this.semicolon(flags)
|
1173 | ]);
|
1174 | },
|
1175 |
|
1176 | CatchClause: function (stmt, flags) {
|
1177 | var result, that = this;
|
1178 | withIndent(function () {
|
1179 | var guard;
|
1180 |
|
1181 | result = [
|
1182 | 'catch' + space + '(',
|
1183 | that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
|
1184 | ')'
|
1185 | ];
|
1186 |
|
1187 | if (stmt.guard) {
|
1188 | guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
|
1189 | result.splice(2, 0, ' if ', guard);
|
1190 | }
|
1191 | });
|
1192 | result.push(this.maybeBlock(stmt.body, S_TFFF));
|
1193 | return result;
|
1194 | },
|
1195 |
|
1196 | DebuggerStatement: function (stmt, flags) {
|
1197 | return 'debugger' + this.semicolon(flags);
|
1198 | },
|
1199 |
|
1200 | EmptyStatement: function (stmt, flags) {
|
1201 | return ';';
|
1202 | },
|
1203 |
|
1204 | ExportDeclaration: function (stmt, flags) {
|
1205 | var result = [ 'export' ], bodyFlags, that = this;
|
1206 |
|
1207 | bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;
|
1208 |
|
1209 |
|
1210 |
|
1211 | if (stmt['default']) {
|
1212 | result = join(result, 'default');
|
1213 | if (isStatement(stmt.declaration)) {
|
1214 | result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
|
1215 | } else {
|
1216 | result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
|
1217 | }
|
1218 | return result;
|
1219 | }
|
1220 |
|
1221 |
|
1222 |
|
1223 | if (stmt.declaration) {
|
1224 | return join(result, this.generateStatement(stmt.declaration, bodyFlags));
|
1225 | }
|
1226 |
|
1227 |
|
1228 |
|
1229 |
|
1230 | if (stmt.specifiers) {
|
1231 | if (stmt.specifiers.length === 0) {
|
1232 | result = join(result, '{' + space + '}');
|
1233 | } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
|
1234 | result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
|
1235 | } else {
|
1236 | result = join(result, '{');
|
1237 | withIndent(function (indent) {
|
1238 | var i, iz;
|
1239 | result.push(newline);
|
1240 | for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
|
1241 | result.push(indent);
|
1242 | result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
|
1243 | if (i + 1 < iz) {
|
1244 | result.push(',' + newline);
|
1245 | }
|
1246 | }
|
1247 | });
|
1248 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
1249 | result.push(newline);
|
1250 | }
|
1251 | result.push(base + '}');
|
1252 | }
|
1253 |
|
1254 | if (stmt.source) {
|
1255 | result = join(result, [
|
1256 | 'from' + space,
|
1257 |
|
1258 | this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
|
1259 | this.semicolon(flags)
|
1260 | ]);
|
1261 | } else {
|
1262 | result.push(this.semicolon(flags));
|
1263 | }
|
1264 | }
|
1265 | return result;
|
1266 | },
|
1267 |
|
1268 | ExpressionStatement: function (stmt, flags) {
|
1269 | var result, fragment;
|
1270 |
|
1271 | function isClassPrefixed(fragment) {
|
1272 | var code;
|
1273 | if (fragment.slice(0, 5) !== 'class') {
|
1274 | return false;
|
1275 | }
|
1276 | code = fragment.charCodeAt(5);
|
1277 | return code === 0x7B || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
|
1278 | }
|
1279 |
|
1280 | function isFunctionPrefixed(fragment) {
|
1281 | var code;
|
1282 | if (fragment.slice(0, 8) !== 'function') {
|
1283 | return false;
|
1284 | }
|
1285 | code = fragment.charCodeAt(8);
|
1286 | return code === 0x28 || esutils.code.isWhiteSpace(code) || code === 0x2A || esutils.code.isLineTerminator(code);
|
1287 | }
|
1288 |
|
1289 | function isAsyncPrefixed(fragment) {
|
1290 | var code, i, iz;
|
1291 | if (fragment.slice(0, 5) !== 'async') {
|
1292 | return false;
|
1293 | }
|
1294 | if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
|
1295 | return false;
|
1296 | }
|
1297 | for (i = 6, iz = fragment.length; i < iz; ++i) {
|
1298 | if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
|
1299 | break;
|
1300 | }
|
1301 | }
|
1302 | if (i === iz) {
|
1303 | return false;
|
1304 | }
|
1305 | if (fragment.slice(i, i + 8) !== 'function') {
|
1306 | return false;
|
1307 | }
|
1308 | code = fragment.charCodeAt(i + 8);
|
1309 | return code === 0x28 || esutils.code.isWhiteSpace(code) || code === 0x2A || esutils.code.isLineTerminator(code);
|
1310 | }
|
1311 |
|
1312 | result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
|
1313 |
|
1314 |
|
1315 | fragment = toSourceNodeWhenNeeded(result).toString();
|
1316 | if (fragment.charCodeAt(0) === 0x7B ||
|
1317 | isClassPrefixed(fragment) ||
|
1318 | isFunctionPrefixed(fragment) ||
|
1319 | isAsyncPrefixed(fragment) ||
|
1320 | (directive && (flags & F_DIRECTIVE_CTX) && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string')) {
|
1321 | result = ['(', result, ')' + this.semicolon(flags)];
|
1322 | } else {
|
1323 | result.push(this.semicolon(flags));
|
1324 | }
|
1325 | return result;
|
1326 | },
|
1327 |
|
1328 | ImportDeclaration: function (stmt, flags) {
|
1329 |
|
1330 |
|
1331 |
|
1332 | var result, cursor, that = this;
|
1333 |
|
1334 |
|
1335 |
|
1336 |
|
1337 | if (stmt.specifiers.length === 0) {
|
1338 |
|
1339 | return [
|
1340 | 'import',
|
1341 | space,
|
1342 |
|
1343 | this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
|
1344 | this.semicolon(flags)
|
1345 | ];
|
1346 | }
|
1347 |
|
1348 |
|
1349 | result = [
|
1350 | 'import'
|
1351 | ];
|
1352 | cursor = 0;
|
1353 |
|
1354 |
|
1355 | if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
|
1356 | result = join(result, [
|
1357 | this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
|
1358 | ]);
|
1359 | ++cursor;
|
1360 | }
|
1361 |
|
1362 | if (stmt.specifiers[cursor]) {
|
1363 | if (cursor !== 0) {
|
1364 | result.push(',');
|
1365 | }
|
1366 |
|
1367 | if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
|
1368 |
|
1369 | result = join(result, [
|
1370 | space,
|
1371 | this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
|
1372 | ]);
|
1373 | } else {
|
1374 |
|
1375 | result.push(space + '{');
|
1376 |
|
1377 | if ((stmt.specifiers.length - cursor) === 1) {
|
1378 |
|
1379 | result.push(space);
|
1380 | result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
|
1381 | result.push(space + '}' + space);
|
1382 | } else {
|
1383 |
|
1384 |
|
1385 |
|
1386 |
|
1387 | withIndent(function (indent) {
|
1388 | var i, iz;
|
1389 | result.push(newline);
|
1390 | for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
|
1391 | result.push(indent);
|
1392 | result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
|
1393 | if (i + 1 < iz) {
|
1394 | result.push(',' + newline);
|
1395 | }
|
1396 | }
|
1397 | });
|
1398 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
1399 | result.push(newline);
|
1400 | }
|
1401 | result.push(base + '}' + space);
|
1402 | }
|
1403 | }
|
1404 | }
|
1405 |
|
1406 | result = join(result, [
|
1407 | 'from' + space,
|
1408 |
|
1409 | this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
|
1410 | this.semicolon(flags)
|
1411 | ]);
|
1412 | return result;
|
1413 | },
|
1414 |
|
1415 | VariableDeclarator: function (stmt, flags) {
|
1416 | var itemFlags = (flags & F_ALLOW_IN) ? E_TTT : E_FTT;
|
1417 | if (stmt.init) {
|
1418 | return [
|
1419 | this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
|
1420 | space,
|
1421 | '=',
|
1422 | space,
|
1423 | this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
|
1424 | ];
|
1425 | }
|
1426 | return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
|
1427 | },
|
1428 |
|
1429 | VariableDeclaration: function (stmt, flags) {
|
1430 |
|
1431 |
|
1432 |
|
1433 | var result, i, iz, node, bodyFlags, that = this;
|
1434 |
|
1435 | result = [ stmt.kind ];
|
1436 |
|
1437 | bodyFlags = (flags & F_ALLOW_IN) ? S_TFFF : S_FFFF;
|
1438 |
|
1439 | function block() {
|
1440 | node = stmt.declarations[0];
|
1441 | if (extra.comment && node.leadingComments) {
|
1442 | result.push('\n');
|
1443 | result.push(addIndent(that.generateStatement(node, bodyFlags)));
|
1444 | } else {
|
1445 | result.push(noEmptySpace());
|
1446 | result.push(that.generateStatement(node, bodyFlags));
|
1447 | }
|
1448 |
|
1449 | for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
|
1450 | node = stmt.declarations[i];
|
1451 | if (extra.comment && node.leadingComments) {
|
1452 | result.push(',' + newline);
|
1453 | result.push(addIndent(that.generateStatement(node, bodyFlags)));
|
1454 | } else {
|
1455 | result.push(',' + space);
|
1456 | result.push(that.generateStatement(node, bodyFlags));
|
1457 | }
|
1458 | }
|
1459 | }
|
1460 |
|
1461 | if (stmt.declarations.length > 1) {
|
1462 | withIndent(block);
|
1463 | } else {
|
1464 | block();
|
1465 | }
|
1466 |
|
1467 | result.push(this.semicolon(flags));
|
1468 |
|
1469 | return result;
|
1470 | },
|
1471 |
|
1472 | ThrowStatement: function (stmt, flags) {
|
1473 | return [join(
|
1474 | 'throw',
|
1475 | this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
|
1476 | ), this.semicolon(flags)];
|
1477 | },
|
1478 |
|
1479 | TryStatement: function (stmt, flags) {
|
1480 | var result, i, iz, guardedHandlers;
|
1481 |
|
1482 | result = ['try', this.maybeBlock(stmt.block, S_TFFF)];
|
1483 | result = this.maybeBlockSuffix(stmt.block, result);
|
1484 |
|
1485 | if (stmt.handlers) {
|
1486 |
|
1487 | for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
|
1488 | result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
|
1489 | if (stmt.finalizer || i + 1 !== iz) {
|
1490 | result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
|
1491 | }
|
1492 | }
|
1493 | } else {
|
1494 | guardedHandlers = stmt.guardedHandlers || [];
|
1495 |
|
1496 | for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
|
1497 | result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
|
1498 | if (stmt.finalizer || i + 1 !== iz) {
|
1499 | result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
|
1500 | }
|
1501 | }
|
1502 |
|
1503 |
|
1504 | if (stmt.handler) {
|
1505 | if (isArray(stmt.handler)) {
|
1506 | for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
|
1507 | result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
|
1508 | if (stmt.finalizer || i + 1 !== iz) {
|
1509 | result = this.maybeBlockSuffix(stmt.handler[i].body, result);
|
1510 | }
|
1511 | }
|
1512 | } else {
|
1513 | result = join(result, this.generateStatement(stmt.handler, S_TFFF));
|
1514 | if (stmt.finalizer) {
|
1515 | result = this.maybeBlockSuffix(stmt.handler.body, result);
|
1516 | }
|
1517 | }
|
1518 | }
|
1519 | }
|
1520 | if (stmt.finalizer) {
|
1521 | result = join(result, ['finally', this.maybeBlock(stmt.finalizer, S_TFFF)]);
|
1522 | }
|
1523 | return result;
|
1524 | },
|
1525 |
|
1526 | SwitchStatement: function (stmt, flags) {
|
1527 | var result, fragment, i, iz, bodyFlags, that = this;
|
1528 | withIndent(function () {
|
1529 | result = [
|
1530 | 'switch' + space + '(',
|
1531 | that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
|
1532 | ')' + space + '{' + newline
|
1533 | ];
|
1534 | });
|
1535 | if (stmt.cases) {
|
1536 | bodyFlags = S_TFFF;
|
1537 | for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
|
1538 | if (i === iz - 1) {
|
1539 | bodyFlags |= F_SEMICOLON_OPT;
|
1540 | }
|
1541 | fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
|
1542 | result.push(fragment);
|
1543 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
1544 | result.push(newline);
|
1545 | }
|
1546 | }
|
1547 | }
|
1548 | result.push(addIndent('}'));
|
1549 | return result;
|
1550 | },
|
1551 |
|
1552 | SwitchCase: function (stmt, flags) {
|
1553 | var result, fragment, i, iz, bodyFlags, that = this;
|
1554 | withIndent(function () {
|
1555 | if (stmt.test) {
|
1556 | result = [
|
1557 | join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
|
1558 | ':'
|
1559 | ];
|
1560 | } else {
|
1561 | result = ['default:'];
|
1562 | }
|
1563 |
|
1564 | i = 0;
|
1565 | iz = stmt.consequent.length;
|
1566 | if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
|
1567 | fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
|
1568 | result.push(fragment);
|
1569 | i = 1;
|
1570 | }
|
1571 |
|
1572 | if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
1573 | result.push(newline);
|
1574 | }
|
1575 |
|
1576 | bodyFlags = S_TFFF;
|
1577 | for (; i < iz; ++i) {
|
1578 | if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
|
1579 | bodyFlags |= F_SEMICOLON_OPT;
|
1580 | }
|
1581 | fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
|
1582 | result.push(fragment);
|
1583 | if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
1584 | result.push(newline);
|
1585 | }
|
1586 | }
|
1587 | });
|
1588 | return result;
|
1589 | },
|
1590 |
|
1591 | IfStatement: function (stmt, flags) {
|
1592 | var result, bodyFlags, semicolonOptional, that = this;
|
1593 | withIndent(function () {
|
1594 | result = [
|
1595 | 'if' + space + '(',
|
1596 | that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
|
1597 | ')'
|
1598 | ];
|
1599 | });
|
1600 | semicolonOptional = flags & F_SEMICOLON_OPT;
|
1601 | bodyFlags = S_TFFF;
|
1602 | if (semicolonOptional) {
|
1603 | bodyFlags |= F_SEMICOLON_OPT;
|
1604 | }
|
1605 | if (stmt.alternate) {
|
1606 | result.push(this.maybeBlock(stmt.consequent, S_TFFF));
|
1607 | result = this.maybeBlockSuffix(stmt.consequent, result);
|
1608 | if (stmt.alternate.type === Syntax.IfStatement) {
|
1609 | result = join(result, ['else ', this.generateStatement(stmt.alternate, bodyFlags)]);
|
1610 | } else {
|
1611 | result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
|
1612 | }
|
1613 | } else {
|
1614 | result.push(this.maybeBlock(stmt.consequent, bodyFlags));
|
1615 | }
|
1616 | return result;
|
1617 | },
|
1618 |
|
1619 | ForStatement: function (stmt, flags) {
|
1620 | var result, that = this;
|
1621 | withIndent(function () {
|
1622 | result = ['for' + space + '('];
|
1623 | if (stmt.init) {
|
1624 | if (stmt.init.type === Syntax.VariableDeclaration) {
|
1625 | result.push(that.generateStatement(stmt.init, S_FFFF));
|
1626 | } else {
|
1627 |
|
1628 | result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
|
1629 | result.push(';');
|
1630 | }
|
1631 | } else {
|
1632 | result.push(';');
|
1633 | }
|
1634 |
|
1635 | if (stmt.test) {
|
1636 | result.push(space);
|
1637 | result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
|
1638 | result.push(';');
|
1639 | } else {
|
1640 | result.push(';');
|
1641 | }
|
1642 |
|
1643 | if (stmt.update) {
|
1644 | result.push(space);
|
1645 | result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
|
1646 | result.push(')');
|
1647 | } else {
|
1648 | result.push(')');
|
1649 | }
|
1650 | });
|
1651 |
|
1652 | result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
|
1653 | return result;
|
1654 | },
|
1655 |
|
1656 | ForInStatement: function (stmt, flags) {
|
1657 | return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
|
1658 | },
|
1659 |
|
1660 | ForOfStatement: function (stmt, flags) {
|
1661 | return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
|
1662 | },
|
1663 |
|
1664 | LabeledStatement: function (stmt, flags) {
|
1665 | return [stmt.label.name + ':', this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)];
|
1666 | },
|
1667 |
|
1668 | Program: function (stmt, flags) {
|
1669 | var result, fragment, i, iz, bodyFlags;
|
1670 | iz = stmt.body.length;
|
1671 | result = [safeConcatenation && iz > 0 ? '\n' : ''];
|
1672 | bodyFlags = S_TFTF;
|
1673 | for (i = 0; i < iz; ++i) {
|
1674 | if (!safeConcatenation && i === iz - 1) {
|
1675 | bodyFlags |= F_SEMICOLON_OPT;
|
1676 | }
|
1677 |
|
1678 | if (preserveBlankLines) {
|
1679 |
|
1680 | if (i === 0) {
|
1681 | if (!stmt.body[0].leadingComments) {
|
1682 | generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
|
1683 | }
|
1684 | }
|
1685 |
|
1686 |
|
1687 | if (i > 0) {
|
1688 | if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
|
1689 | generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
|
1690 | }
|
1691 | }
|
1692 | }
|
1693 |
|
1694 | fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
|
1695 | result.push(fragment);
|
1696 | if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
1697 | if (preserveBlankLines) {
|
1698 | if (!stmt.body[i + 1].leadingComments) {
|
1699 | result.push(newline);
|
1700 | }
|
1701 | } else {
|
1702 | result.push(newline);
|
1703 | }
|
1704 | }
|
1705 |
|
1706 | if (preserveBlankLines) {
|
1707 |
|
1708 | if (i === iz - 1) {
|
1709 | if (!stmt.body[i].trailingComments) {
|
1710 | generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
|
1711 | }
|
1712 | }
|
1713 | }
|
1714 | }
|
1715 | return result;
|
1716 | },
|
1717 |
|
1718 | FunctionDeclaration: function (stmt, flags) {
|
1719 | return [
|
1720 | generateAsyncPrefix(stmt, true),
|
1721 | 'function',
|
1722 | generateStarSuffix(stmt) || noEmptySpace(),
|
1723 | generateIdentifier(stmt.id),
|
1724 | this.generateFunctionBody(stmt)
|
1725 | ];
|
1726 | },
|
1727 |
|
1728 | ReturnStatement: function (stmt, flags) {
|
1729 | if (stmt.argument) {
|
1730 | return [join(
|
1731 | 'return',
|
1732 | this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
|
1733 | ), this.semicolon(flags)];
|
1734 | }
|
1735 | return ['return' + this.semicolon(flags)];
|
1736 | },
|
1737 |
|
1738 | WhileStatement: function (stmt, flags) {
|
1739 | var result, that = this;
|
1740 | withIndent(function () {
|
1741 | result = [
|
1742 | 'while' + space + '(',
|
1743 | that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
|
1744 | ')'
|
1745 | ];
|
1746 | });
|
1747 | result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
|
1748 | return result;
|
1749 | },
|
1750 |
|
1751 | WithStatement: function (stmt, flags) {
|
1752 | var result, that = this;
|
1753 | withIndent(function () {
|
1754 | result = [
|
1755 | 'with' + space + '(',
|
1756 | that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
|
1757 | ')'
|
1758 | ];
|
1759 | });
|
1760 | result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
|
1761 | return result;
|
1762 | }
|
1763 |
|
1764 | };
|
1765 |
|
1766 | merge(CodeGenerator.prototype, CodeGenerator.Statement);
|
1767 |
|
1768 |
|
1769 |
|
1770 | CodeGenerator.Expression = {
|
1771 |
|
1772 | SequenceExpression: function (expr, precedence, flags) {
|
1773 | var result, i, iz;
|
1774 | if (Precedence.Sequence < precedence) {
|
1775 | flags |= F_ALLOW_IN;
|
1776 | }
|
1777 | result = [];
|
1778 | for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
|
1779 | result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
|
1780 | if (i + 1 < iz) {
|
1781 | result.push(',' + space);
|
1782 | }
|
1783 | }
|
1784 | return parenthesize(result, Precedence.Sequence, precedence);
|
1785 | },
|
1786 |
|
1787 | AssignmentExpression: function (expr, precedence, flags) {
|
1788 | return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
|
1789 | },
|
1790 |
|
1791 | ArrowFunctionExpression: function (expr, precedence, flags) {
|
1792 | return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
|
1793 | },
|
1794 |
|
1795 | ConditionalExpression: function (expr, precedence, flags) {
|
1796 | if (Precedence.Conditional < precedence) {
|
1797 | flags |= F_ALLOW_IN;
|
1798 | }
|
1799 | return parenthesize(
|
1800 | [
|
1801 | this.generateExpression(expr.test, Precedence.LogicalOR, flags),
|
1802 | space + '?' + space,
|
1803 | this.generateExpression(expr.consequent, Precedence.Assignment, flags),
|
1804 | space + ':' + space,
|
1805 | this.generateExpression(expr.alternate, Precedence.Assignment, flags)
|
1806 | ],
|
1807 | Precedence.Conditional,
|
1808 | precedence
|
1809 | );
|
1810 | },
|
1811 |
|
1812 | LogicalExpression: function (expr, precedence, flags) {
|
1813 | return this.BinaryExpression(expr, precedence, flags);
|
1814 | },
|
1815 |
|
1816 | BinaryExpression: function (expr, precedence, flags) {
|
1817 | var result, currentPrecedence, fragment, leftSource;
|
1818 | currentPrecedence = BinaryPrecedence[expr.operator];
|
1819 |
|
1820 | if (currentPrecedence < precedence) {
|
1821 | flags |= F_ALLOW_IN;
|
1822 | }
|
1823 |
|
1824 | fragment = this.generateExpression(expr.left, currentPrecedence, flags);
|
1825 |
|
1826 | leftSource = fragment.toString();
|
1827 |
|
1828 | if (leftSource.charCodeAt(leftSource.length - 1) === 0x2F && esutils.code.isIdentifierPart(expr.operator.charCodeAt(0))) {
|
1829 | result = [fragment, noEmptySpace(), expr.operator];
|
1830 | } else {
|
1831 | result = join(fragment, expr.operator);
|
1832 | }
|
1833 |
|
1834 | fragment = this.generateExpression(expr.right, currentPrecedence + 1, flags);
|
1835 |
|
1836 | if (expr.operator === '/' && fragment.toString().charAt(0) === '/' ||
|
1837 | expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
|
1838 |
|
1839 | result.push(noEmptySpace());
|
1840 | result.push(fragment);
|
1841 | } else {
|
1842 | result = join(result, fragment);
|
1843 | }
|
1844 |
|
1845 | if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
|
1846 | return ['(', result, ')'];
|
1847 | }
|
1848 | return parenthesize(result, currentPrecedence, precedence);
|
1849 | },
|
1850 |
|
1851 | CallExpression: function (expr, precedence, flags) {
|
1852 | var result, i, iz;
|
1853 |
|
1854 | result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
|
1855 | result.push('(');
|
1856 | for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
|
1857 | result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
|
1858 | if (i + 1 < iz) {
|
1859 | result.push(',' + space);
|
1860 | }
|
1861 | }
|
1862 | result.push(')');
|
1863 |
|
1864 | if (!(flags & F_ALLOW_CALL)) {
|
1865 | return ['(', result, ')'];
|
1866 | }
|
1867 | return parenthesize(result, Precedence.Call, precedence);
|
1868 | },
|
1869 |
|
1870 | NewExpression: function (expr, precedence, flags) {
|
1871 | var result, length, i, iz, itemFlags;
|
1872 | length = expr['arguments'].length;
|
1873 |
|
1874 |
|
1875 |
|
1876 | itemFlags = (flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0) ? E_TFT : E_TFF;
|
1877 |
|
1878 | result = join(
|
1879 | 'new',
|
1880 | this.generateExpression(expr.callee, Precedence.New, itemFlags)
|
1881 | );
|
1882 |
|
1883 | if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
|
1884 | result.push('(');
|
1885 | for (i = 0, iz = length; i < iz; ++i) {
|
1886 | result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
|
1887 | if (i + 1 < iz) {
|
1888 | result.push(',' + space);
|
1889 | }
|
1890 | }
|
1891 | result.push(')');
|
1892 | }
|
1893 |
|
1894 | return parenthesize(result, Precedence.New, precedence);
|
1895 | },
|
1896 |
|
1897 | MemberExpression: function (expr, precedence, flags) {
|
1898 | var result, fragment;
|
1899 |
|
1900 |
|
1901 | result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];
|
1902 |
|
1903 | if (expr.computed) {
|
1904 | result.push('[');
|
1905 | result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
|
1906 | result.push(']');
|
1907 | } else {
|
1908 | if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
|
1909 | fragment = toSourceNodeWhenNeeded(result).toString();
|
1910 |
|
1911 |
|
1912 |
|
1913 |
|
1914 |
|
1915 |
|
1916 | if (
|
1917 | fragment.indexOf('.') < 0 &&
|
1918 | !/[eExX]/.test(fragment) &&
|
1919 | esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) &&
|
1920 | !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)
|
1921 | ) {
|
1922 | result.push('.');
|
1923 | }
|
1924 | }
|
1925 | result.push('.');
|
1926 | result.push(generateIdentifier(expr.property));
|
1927 | }
|
1928 |
|
1929 | return parenthesize(result, Precedence.Member, precedence);
|
1930 | },
|
1931 |
|
1932 | UnaryExpression: function (expr, precedence, flags) {
|
1933 | var result, fragment, rightCharCode, leftSource, leftCharCode;
|
1934 | fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);
|
1935 |
|
1936 | if (space === '') {
|
1937 | result = join(expr.operator, fragment);
|
1938 | } else {
|
1939 | result = [expr.operator];
|
1940 | if (expr.operator.length > 2) {
|
1941 |
|
1942 |
|
1943 | result = join(result, fragment);
|
1944 | } else {
|
1945 |
|
1946 |
|
1947 | leftSource = toSourceNodeWhenNeeded(result).toString();
|
1948 | leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
|
1949 | rightCharCode = fragment.toString().charCodeAt(0);
|
1950 |
|
1951 | if (((leftCharCode === 0x2B || leftCharCode === 0x2D ) && leftCharCode === rightCharCode) ||
|
1952 | (esutils.code.isIdentifierPart(leftCharCode) && esutils.code.isIdentifierPart(rightCharCode))) {
|
1953 | result.push(noEmptySpace());
|
1954 | result.push(fragment);
|
1955 | } else {
|
1956 | result.push(fragment);
|
1957 | }
|
1958 | }
|
1959 | }
|
1960 | return parenthesize(result, Precedence.Unary, precedence);
|
1961 | },
|
1962 |
|
1963 | YieldExpression: function (expr, precedence, flags) {
|
1964 | var result;
|
1965 | if (expr.delegate) {
|
1966 | result = 'yield*';
|
1967 | } else {
|
1968 | result = 'yield';
|
1969 | }
|
1970 | if (expr.argument) {
|
1971 | result = join(
|
1972 | result,
|
1973 | this.generateExpression(expr.argument, Precedence.Yield, E_TTT)
|
1974 | );
|
1975 | }
|
1976 | return parenthesize(result, Precedence.Yield, precedence);
|
1977 | },
|
1978 |
|
1979 | AwaitExpression: function (expr, precedence, flags) {
|
1980 | var result = join(
|
1981 | expr.delegate ? 'await*' : 'await',
|
1982 | this.generateExpression(expr.argument, Precedence.Await, E_TTT)
|
1983 | );
|
1984 | return parenthesize(result, Precedence.Await, precedence);
|
1985 | },
|
1986 |
|
1987 | UpdateExpression: function (expr, precedence, flags) {
|
1988 | if (expr.prefix) {
|
1989 | return parenthesize(
|
1990 | [
|
1991 | expr.operator,
|
1992 | this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
|
1993 | ],
|
1994 | Precedence.Unary,
|
1995 | precedence
|
1996 | );
|
1997 | }
|
1998 | return parenthesize(
|
1999 | [
|
2000 | this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
|
2001 | expr.operator
|
2002 | ],
|
2003 | Precedence.Postfix,
|
2004 | precedence
|
2005 | );
|
2006 | },
|
2007 |
|
2008 | FunctionExpression: function (expr, precedence, flags) {
|
2009 | var result = [
|
2010 | generateAsyncPrefix(expr, true),
|
2011 | 'function'
|
2012 | ];
|
2013 | if (expr.id) {
|
2014 | result.push(generateStarSuffix(expr) || noEmptySpace());
|
2015 | result.push(generateIdentifier(expr.id));
|
2016 | } else {
|
2017 | result.push(generateStarSuffix(expr) || space);
|
2018 | }
|
2019 | result.push(this.generateFunctionBody(expr));
|
2020 | return result;
|
2021 | },
|
2022 |
|
2023 | ExportBatchSpecifier: function (expr, precedence, flags) {
|
2024 | return '*';
|
2025 | },
|
2026 |
|
2027 | ArrayPattern: function (expr, precedence, flags) {
|
2028 | return this.ArrayExpression(expr, precedence, flags);
|
2029 | },
|
2030 |
|
2031 | ArrayExpression: function (expr, precedence, flags) {
|
2032 | var result, multiline, that = this;
|
2033 | if (!expr.elements.length) {
|
2034 | return '[]';
|
2035 | }
|
2036 | multiline = expr.elements.length > 1;
|
2037 | result = ['[', multiline ? newline : ''];
|
2038 | withIndent(function (indent) {
|
2039 | var i, iz;
|
2040 | for (i = 0, iz = expr.elements.length; i < iz; ++i) {
|
2041 | if (!expr.elements[i]) {
|
2042 | if (multiline) {
|
2043 | result.push(indent);
|
2044 | }
|
2045 | if (i + 1 === iz) {
|
2046 | result.push(',');
|
2047 | }
|
2048 | } else {
|
2049 | result.push(multiline ? indent : '');
|
2050 | result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
|
2051 | }
|
2052 | if (i + 1 < iz) {
|
2053 | result.push(',' + (multiline ? newline : space));
|
2054 | }
|
2055 | }
|
2056 | });
|
2057 | if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
2058 | result.push(newline);
|
2059 | }
|
2060 | result.push(multiline ? base : '');
|
2061 | result.push(']');
|
2062 | return result;
|
2063 | },
|
2064 |
|
2065 | ClassExpression: function (expr, precedence, flags) {
|
2066 | var result, fragment;
|
2067 | result = ['class'];
|
2068 | if (expr.id) {
|
2069 | result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
|
2070 | }
|
2071 | if (expr.superClass) {
|
2072 | fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Assignment, E_TTT));
|
2073 | result = join(result, fragment);
|
2074 | }
|
2075 | result.push(space);
|
2076 | result.push(this.generateStatement(expr.body, S_TFFT));
|
2077 | return result;
|
2078 | },
|
2079 |
|
2080 | MethodDefinition: function (expr, precedence, flags) {
|
2081 | var result, fragment;
|
2082 | if (expr['static']) {
|
2083 | result = ['static' + space];
|
2084 | } else {
|
2085 | result = [];
|
2086 | }
|
2087 | if (expr.kind === 'get' || expr.kind === 'set') {
|
2088 | fragment = [
|
2089 | join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)),
|
2090 | this.generateFunctionBody(expr.value)
|
2091 | ];
|
2092 | } else {
|
2093 | fragment = [
|
2094 | generateMethodPrefix(expr),
|
2095 | this.generatePropertyKey(expr.key, expr.computed),
|
2096 | this.generateFunctionBody(expr.value)
|
2097 | ];
|
2098 | }
|
2099 | return join(result, fragment);
|
2100 | },
|
2101 |
|
2102 | Property: function (expr, precedence, flags) {
|
2103 | if (expr.kind === 'get' || expr.kind === 'set') {
|
2104 | return [
|
2105 | expr.kind, noEmptySpace(),
|
2106 | this.generatePropertyKey(expr.key, expr.computed),
|
2107 | this.generateFunctionBody(expr.value)
|
2108 | ];
|
2109 | }
|
2110 |
|
2111 | if (expr.shorthand) {
|
2112 | return this.generatePropertyKey(expr.key, expr.computed);
|
2113 | }
|
2114 |
|
2115 | if (expr.method) {
|
2116 | return [
|
2117 | generateMethodPrefix(expr),
|
2118 | this.generatePropertyKey(expr.key, expr.computed),
|
2119 | this.generateFunctionBody(expr.value)
|
2120 | ];
|
2121 | }
|
2122 |
|
2123 | return [
|
2124 | this.generatePropertyKey(expr.key, expr.computed),
|
2125 | ':' + space,
|
2126 | this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
|
2127 | ];
|
2128 | },
|
2129 |
|
2130 | ObjectExpression: function (expr, precedence, flags) {
|
2131 | var multiline, result, fragment, that = this;
|
2132 |
|
2133 | if (!expr.properties.length) {
|
2134 | return '{}';
|
2135 | }
|
2136 | multiline = expr.properties.length > 1;
|
2137 |
|
2138 | withIndent(function () {
|
2139 | fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
|
2140 | });
|
2141 |
|
2142 | if (!multiline) {
|
2143 |
|
2144 |
|
2145 |
|
2146 |
|
2147 |
|
2148 |
|
2149 |
|
2150 |
|
2151 | if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
|
2152 | return [ '{', space, fragment, space, '}' ];
|
2153 | }
|
2154 | }
|
2155 |
|
2156 | withIndent(function (indent) {
|
2157 | var i, iz;
|
2158 | result = [ '{', newline, indent, fragment ];
|
2159 |
|
2160 | if (multiline) {
|
2161 | result.push(',' + newline);
|
2162 | for (i = 1, iz = expr.properties.length; i < iz; ++i) {
|
2163 | result.push(indent);
|
2164 | result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
|
2165 | if (i + 1 < iz) {
|
2166 | result.push(',' + newline);
|
2167 | }
|
2168 | }
|
2169 | }
|
2170 | });
|
2171 |
|
2172 | if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
2173 | result.push(newline);
|
2174 | }
|
2175 | result.push(base);
|
2176 | result.push('}');
|
2177 | return result;
|
2178 | },
|
2179 |
|
2180 | ObjectPattern: function (expr, precedence, flags) {
|
2181 | var result, i, iz, multiline, property, that = this;
|
2182 | if (!expr.properties.length) {
|
2183 | return '{}';
|
2184 | }
|
2185 |
|
2186 | multiline = false;
|
2187 | if (expr.properties.length === 1) {
|
2188 | property = expr.properties[0];
|
2189 | if (property.value.type !== Syntax.Identifier) {
|
2190 | multiline = true;
|
2191 | }
|
2192 | } else {
|
2193 | for (i = 0, iz = expr.properties.length; i < iz; ++i) {
|
2194 | property = expr.properties[i];
|
2195 | if (!property.shorthand) {
|
2196 | multiline = true;
|
2197 | break;
|
2198 | }
|
2199 | }
|
2200 | }
|
2201 | result = ['{', multiline ? newline : '' ];
|
2202 |
|
2203 | withIndent(function (indent) {
|
2204 | var i, iz;
|
2205 | for (i = 0, iz = expr.properties.length; i < iz; ++i) {
|
2206 | result.push(multiline ? indent : '');
|
2207 | result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
|
2208 | if (i + 1 < iz) {
|
2209 | result.push(',' + (multiline ? newline : space));
|
2210 | }
|
2211 | }
|
2212 | });
|
2213 |
|
2214 | if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
|
2215 | result.push(newline);
|
2216 | }
|
2217 | result.push(multiline ? base : '');
|
2218 | result.push('}');
|
2219 | return result;
|
2220 | },
|
2221 |
|
2222 | ThisExpression: function (expr, precedence, flags) {
|
2223 | return 'this';
|
2224 | },
|
2225 |
|
2226 | Identifier: function (expr, precedence, flags) {
|
2227 | return generateIdentifier(expr);
|
2228 | },
|
2229 |
|
2230 | ImportDefaultSpecifier: function (expr, precedence, flags) {
|
2231 | return generateIdentifier(expr.id);
|
2232 | },
|
2233 |
|
2234 | ImportNamespaceSpecifier: function (expr, precedence, flags) {
|
2235 | var result = ['*'];
|
2236 | if (expr.id) {
|
2237 | result.push(space + 'as' + noEmptySpace() + generateIdentifier(expr.id));
|
2238 | }
|
2239 | return result;
|
2240 | },
|
2241 |
|
2242 | ImportSpecifier: function (expr, precedence, flags) {
|
2243 | return this.ExportSpecifier(expr, precedence, flags);
|
2244 | },
|
2245 |
|
2246 | ExportSpecifier: function (expr, precedence, flags) {
|
2247 | var result = [ expr.id.name ];
|
2248 | if (expr.name) {
|
2249 | result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(expr.name));
|
2250 | }
|
2251 | return result;
|
2252 | },
|
2253 |
|
2254 | Literal: function (expr, precedence, flags) {
|
2255 | var raw;
|
2256 | if (expr.hasOwnProperty('raw') && parse && extra.raw) {
|
2257 | try {
|
2258 | raw = parse(expr.raw).body[0].expression;
|
2259 | if (raw.type === Syntax.Literal) {
|
2260 | if (raw.value === expr.value) {
|
2261 | return expr.raw;
|
2262 | }
|
2263 | }
|
2264 | } catch (e) {
|
2265 |
|
2266 | }
|
2267 | }
|
2268 |
|
2269 | if (expr.value === null) {
|
2270 | return 'null';
|
2271 | }
|
2272 |
|
2273 | if (typeof expr.value === 'string') {
|
2274 | return escapeString(expr.value);
|
2275 | }
|
2276 |
|
2277 | if (typeof expr.value === 'number') {
|
2278 | return generateNumber(expr.value);
|
2279 | }
|
2280 |
|
2281 | if (typeof expr.value === 'boolean') {
|
2282 | return expr.value ? 'true' : 'false';
|
2283 | }
|
2284 |
|
2285 | return generateRegExp(expr.value);
|
2286 | },
|
2287 |
|
2288 | GeneratorExpression: function (expr, precedence, flags) {
|
2289 | return this.ComprehensionExpression(expr, precedence, flags);
|
2290 | },
|
2291 |
|
2292 | ComprehensionExpression: function (expr, precedence, flags) {
|
2293 |
|
2294 |
|
2295 |
|
2296 | var result, i, iz, fragment, that = this;
|
2297 | result = (expr.type === Syntax.GeneratorExpression) ? ['('] : ['['];
|
2298 |
|
2299 | if (extra.moz.comprehensionExpressionStartsWithAssignment) {
|
2300 | fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
|
2301 | result.push(fragment);
|
2302 | }
|
2303 |
|
2304 | if (expr.blocks) {
|
2305 | withIndent(function () {
|
2306 | for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
|
2307 | fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
|
2308 | if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
|
2309 | result = join(result, fragment);
|
2310 | } else {
|
2311 | result.push(fragment);
|
2312 | }
|
2313 | }
|
2314 | });
|
2315 | }
|
2316 |
|
2317 | if (expr.filter) {
|
2318 | result = join(result, 'if' + space);
|
2319 | fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
|
2320 | result = join(result, [ '(', fragment, ')' ]);
|
2321 | }
|
2322 |
|
2323 | if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
|
2324 | fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
|
2325 |
|
2326 | result = join(result, fragment);
|
2327 | }
|
2328 |
|
2329 | result.push((expr.type === Syntax.GeneratorExpression) ? ')' : ']');
|
2330 | return result;
|
2331 | },
|
2332 |
|
2333 | ComprehensionBlock: function (expr, precedence, flags) {
|
2334 | var fragment;
|
2335 | if (expr.left.type === Syntax.VariableDeclaration) {
|
2336 | fragment = [
|
2337 | expr.left.kind, noEmptySpace(),
|
2338 | this.generateStatement(expr.left.declarations[0], S_FFFF)
|
2339 | ];
|
2340 | } else {
|
2341 | fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
|
2342 | }
|
2343 |
|
2344 | fragment = join(fragment, expr.of ? 'of' : 'in');
|
2345 | fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));
|
2346 |
|
2347 | return [ 'for' + space + '(', fragment, ')' ];
|
2348 | },
|
2349 |
|
2350 | SpreadElement: function (expr, precedence, flags) {
|
2351 | return [
|
2352 | '...',
|
2353 | this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
|
2354 | ];
|
2355 | },
|
2356 |
|
2357 | TaggedTemplateExpression: function (expr, precedence, flags) {
|
2358 | var itemFlags = E_TTF;
|
2359 | if (!(flags & F_ALLOW_CALL)) {
|
2360 | itemFlags = E_TFF;
|
2361 | }
|
2362 | var result = [
|
2363 | this.generateExpression(expr.tag, Precedence.Call, itemFlags),
|
2364 | this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
|
2365 | ];
|
2366 | return parenthesize(result, Precedence.TaggedTemplate, precedence);
|
2367 | },
|
2368 |
|
2369 | TemplateElement: function (expr, precedence, flags) {
|
2370 |
|
2371 |
|
2372 | return expr.value.raw;
|
2373 | },
|
2374 |
|
2375 | TemplateLiteral: function (expr, precedence, flags) {
|
2376 | var result, i, iz;
|
2377 | result = [ '`' ];
|
2378 | for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
|
2379 | result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
|
2380 | if (i + 1 < iz) {
|
2381 | result.push('${' + space);
|
2382 | result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
|
2383 | result.push(space + '}');
|
2384 | }
|
2385 | }
|
2386 | result.push('`');
|
2387 | return result;
|
2388 | },
|
2389 |
|
2390 | ModuleSpecifier: function (expr, precedence, flags) {
|
2391 | return this.Literal(expr, precedence, flags);
|
2392 | }
|
2393 |
|
2394 | };
|
2395 |
|
2396 | merge(CodeGenerator.prototype, CodeGenerator.Expression);
|
2397 |
|
2398 | CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
|
2399 | var result, type;
|
2400 |
|
2401 | type = expr.type || Syntax.Property;
|
2402 |
|
2403 | if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
|
2404 | return generateVerbatim(expr, precedence);
|
2405 | }
|
2406 |
|
2407 | result = this[type](expr, precedence, flags);
|
2408 |
|
2409 |
|
2410 | if (extra.comment) {
|
2411 | result = addComments(expr,result);
|
2412 | }
|
2413 | return toSourceNodeWhenNeeded(result, expr);
|
2414 | };
|
2415 |
|
2416 | CodeGenerator.prototype.generateStatement = function (stmt, flags) {
|
2417 | var result,
|
2418 | fragment;
|
2419 |
|
2420 | result = this[stmt.type](stmt, flags);
|
2421 |
|
2422 |
|
2423 |
|
2424 | if (extra.comment) {
|
2425 | result = addComments(stmt, result);
|
2426 | }
|
2427 |
|
2428 | fragment = toSourceNodeWhenNeeded(result).toString();
|
2429 | if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' && fragment.charAt(fragment.length - 1) === '\n') {
|
2430 | result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
|
2431 | }
|
2432 |
|
2433 | return toSourceNodeWhenNeeded(result, stmt);
|
2434 | };
|
2435 |
|
2436 | function generateInternal(node) {
|
2437 | var codegen;
|
2438 |
|
2439 | codegen = new CodeGenerator();
|
2440 | if (isStatement(node)) {
|
2441 | return codegen.generateStatement(node, S_TFFF);
|
2442 | }
|
2443 |
|
2444 | if (isExpression(node)) {
|
2445 | return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
|
2446 | }
|
2447 |
|
2448 | throw new Error('Unknown node type: ' + node.type);
|
2449 | }
|
2450 |
|
2451 | function generate(node, options) {
|
2452 | var defaultOptions = getDefaultOptions(), result, pair;
|
2453 |
|
2454 | if (options != null) {
|
2455 |
|
2456 |
|
2457 |
|
2458 |
|
2459 |
|
2460 |
|
2461 | if (typeof options.indent === 'string') {
|
2462 | defaultOptions.format.indent.style = options.indent;
|
2463 | }
|
2464 | if (typeof options.base === 'number') {
|
2465 | defaultOptions.format.indent.base = options.base;
|
2466 | }
|
2467 | options = updateDeeply(defaultOptions, options);
|
2468 | indent = options.format.indent.style;
|
2469 | if (typeof options.base === 'string') {
|
2470 | base = options.base;
|
2471 | } else {
|
2472 | base = stringRepeat(indent, options.format.indent.base);
|
2473 | }
|
2474 | } else {
|
2475 | options = defaultOptions;
|
2476 | indent = options.format.indent.style;
|
2477 | base = stringRepeat(indent, options.format.indent.base);
|
2478 | }
|
2479 | json = options.format.json;
|
2480 | renumber = options.format.renumber;
|
2481 | hexadecimal = json ? false : options.format.hexadecimal;
|
2482 | quotes = json ? 'double' : options.format.quotes;
|
2483 | escapeless = options.format.escapeless;
|
2484 | newline = options.format.newline;
|
2485 | space = options.format.space;
|
2486 | if (options.format.compact) {
|
2487 | newline = space = indent = base = '';
|
2488 | }
|
2489 | parentheses = options.format.parentheses;
|
2490 | semicolons = options.format.semicolons;
|
2491 | safeConcatenation = options.format.safeConcatenation;
|
2492 | directive = options.directive;
|
2493 | parse = json ? null : options.parse;
|
2494 | sourceMap = options.sourceMap;
|
2495 | sourceCode = options.sourceCode;
|
2496 | preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
|
2497 | extra = options;
|
2498 |
|
2499 | if (sourceMap) {
|
2500 | if (!exports.browser) {
|
2501 |
|
2502 |
|
2503 | SourceNode = require('source-map').SourceNode;
|
2504 | } else {
|
2505 | SourceNode = global.sourceMap.SourceNode;
|
2506 | }
|
2507 | }
|
2508 |
|
2509 | result = generateInternal(node);
|
2510 |
|
2511 | if (!sourceMap) {
|
2512 | pair = {code: result.toString(), map: null};
|
2513 | return options.sourceMapWithCode ? pair : pair.code;
|
2514 | }
|
2515 |
|
2516 |
|
2517 | pair = result.toStringWithSourceMap({
|
2518 | file: options.file,
|
2519 | sourceRoot: options.sourceMapRoot
|
2520 | });
|
2521 |
|
2522 | if (options.sourceContent) {
|
2523 | pair.map.setSourceContent(options.sourceMap,
|
2524 | options.sourceContent);
|
2525 | }
|
2526 |
|
2527 | if (options.sourceMapWithCode) {
|
2528 | return pair;
|
2529 | }
|
2530 |
|
2531 | return pair.map.toString();
|
2532 | }
|
2533 |
|
2534 | FORMAT_MINIFY = {
|
2535 | indent: {
|
2536 | style: '',
|
2537 | base: 0
|
2538 | },
|
2539 | renumber: true,
|
2540 | hexadecimal: true,
|
2541 | quotes: 'auto',
|
2542 | escapeless: true,
|
2543 | compact: true,
|
2544 | parentheses: false,
|
2545 | semicolons: false
|
2546 | };
|
2547 |
|
2548 | FORMAT_DEFAULTS = getDefaultOptions().format;
|
2549 |
|
2550 | exports.version = require('./package.json').version;
|
2551 | exports.generate = generate;
|
2552 | exports.attachComments = estraverse.attachComments;
|
2553 | exports.Precedence = updateDeeply({}, Precedence);
|
2554 | exports.browser = false;
|
2555 | exports.FORMAT_MINIFY = FORMAT_MINIFY;
|
2556 | exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
|
2557 | }());
|
2558 |
|