1 | import { factory } from '../utils/factory'
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2 | import { isAccessorNode, isConstantNode, isFunctionNode, isOperatorNode, isSymbolNode } from '../utils/is'
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3 | import { deepMap } from '../utils/collection'
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4 | import { hasOwnProperty } from '../utils/object'
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5 |
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6 | const name = 'parse'
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7 | const dependencies = [
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8 | 'typed',
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9 | 'numeric',
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10 | 'config',
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11 | 'AccessorNode',
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12 | 'ArrayNode',
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13 | 'AssignmentNode',
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14 | 'BlockNode',
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15 | 'ConditionalNode',
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16 | 'ConstantNode',
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17 | 'FunctionAssignmentNode',
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18 | 'FunctionNode',
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19 | 'IndexNode',
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20 | 'ObjectNode',
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21 | 'OperatorNode',
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22 | 'ParenthesisNode',
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23 | 'RangeNode',
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24 | 'RelationalNode',
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25 | 'SymbolNode'
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26 | ]
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27 |
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28 | export const createParse = factory(name, dependencies, ({
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29 | typed,
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30 | numeric,
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31 | config,
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32 | AccessorNode,
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33 | ArrayNode,
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34 | AssignmentNode,
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35 | BlockNode,
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36 | ConditionalNode,
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37 | ConstantNode,
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38 | FunctionAssignmentNode,
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39 | FunctionNode,
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40 | IndexNode,
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41 | ObjectNode,
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42 | OperatorNode,
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43 | ParenthesisNode,
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44 | RangeNode,
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45 | RelationalNode,
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46 | SymbolNode
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47 | }) => {
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48 | |
49 |
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50 |
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51 |
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52 |
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53 |
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54 |
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55 |
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56 |
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57 |
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58 |
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59 |
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60 |
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61 |
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62 |
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63 |
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64 |
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65 |
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66 |
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67 |
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68 |
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69 |
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70 |
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71 |
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72 |
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73 |
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74 |
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75 |
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76 |
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77 |
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78 |
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79 |
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80 |
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81 |
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82 |
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83 |
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84 |
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85 |
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86 |
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87 | const parse = typed(name, {
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88 | string: function (expression) {
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89 | return parseStart(expression, {})
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90 | },
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91 | 'Array | Matrix': function (expressions) {
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92 | return parseMultiple(expressions, {})
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93 | },
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94 | 'string, Object': function (expression, options) {
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95 | const extraNodes = options.nodes !== undefined ? options.nodes : {}
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96 |
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97 | return parseStart(expression, extraNodes)
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98 | },
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99 | 'Array | Matrix, Object': parseMultiple
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100 | })
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101 |
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102 | function parseMultiple (expressions, options = {}) {
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103 | const extraNodes = options.nodes !== undefined ? options.nodes : {}
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104 |
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105 |
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106 | return deepMap(expressions, function (elem) {
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107 | if (typeof elem !== 'string') throw new TypeError('String expected')
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108 |
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109 | return parseStart(elem, extraNodes)
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110 | })
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111 | }
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112 |
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113 |
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114 | const TOKENTYPE = {
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115 | NULL: 0,
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116 | DELIMITER: 1,
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117 | NUMBER: 2,
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118 | SYMBOL: 3,
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119 | UNKNOWN: 4
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120 | }
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121 |
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122 |
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123 | const DELIMITERS = {
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124 | ',': true,
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125 | '(': true,
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126 | ')': true,
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127 | '[': true,
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128 | ']': true,
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129 | '{': true,
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130 | '}': true,
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131 | '"': true,
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132 | '\'': true,
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133 | ';': true,
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134 |
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135 | '+': true,
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136 | '-': true,
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137 | '*': true,
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138 | '.*': true,
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139 | '/': true,
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140 | './': true,
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141 | '%': true,
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142 | '^': true,
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143 | '.^': true,
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144 | '~': true,
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145 | '!': true,
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146 | '&': true,
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147 | '|': true,
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148 | '^|': true,
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149 | '=': true,
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150 | ':': true,
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151 | '?': true,
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152 |
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153 | '==': true,
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154 | '!=': true,
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155 | '<': true,
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156 | '>': true,
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157 | '<=': true,
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158 | '>=': true,
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159 |
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160 | '<<': true,
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161 | '>>': true,
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162 | '>>>': true
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163 | }
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164 |
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165 |
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166 | const NAMED_DELIMITERS = {
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167 | mod: true,
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168 | to: true,
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169 | in: true,
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170 | and: true,
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171 | xor: true,
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172 | or: true,
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173 | not: true
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174 | }
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175 |
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176 | const CONSTANTS = {
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177 | true: true,
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178 | false: false,
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179 | null: null,
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180 | undefined: undefined
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181 | }
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182 |
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183 | const NUMERIC_CONSTANTS = [
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184 | 'NaN',
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185 | 'Infinity'
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186 | ]
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187 |
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188 | function initialState () {
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189 | return {
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190 | extraNodes: {},
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191 | expression: '',
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192 | comment: '',
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193 | index: 0,
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194 | token: '',
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195 | tokenType: TOKENTYPE.NULL,
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196 | nestingLevel: 0,
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197 | conditionalLevel: null
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198 | }
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199 | }
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200 |
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201 | |
202 |
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203 |
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204 |
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205 |
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206 |
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207 |
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208 |
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209 | function currentString (state, length) {
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210 | return state.expression.substr(state.index, length)
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211 | }
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212 |
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213 | |
214 |
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215 |
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216 |
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217 |
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218 |
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219 |
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220 | function currentCharacter (state) {
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221 | return currentString(state, 1)
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222 | }
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223 |
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224 | |
225 |
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226 |
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227 |
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228 |
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229 |
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230 | function next (state) {
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231 | state.index++
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232 | }
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233 |
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234 | |
235 |
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236 |
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237 |
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238 |
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239 | function prevCharacter (state) {
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240 | return state.expression.charAt(state.index - 1)
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241 | }
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242 |
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243 | |
244 |
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245 |
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246 |
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247 |
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248 | function nextCharacter (state) {
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249 | return state.expression.charAt(state.index + 1)
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250 | }
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251 |
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252 | |
253 |
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254 |
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255 |
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256 |
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257 | function getToken (state) {
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258 | state.tokenType = TOKENTYPE.NULL
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259 | state.token = ''
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260 | state.comment = ''
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261 |
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262 |
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263 |
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264 | while (parse.isWhitespace(currentCharacter(state), state.nestingLevel)) {
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265 | next(state)
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266 | }
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267 |
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268 |
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269 | if (currentCharacter(state) === '#') {
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270 | while (currentCharacter(state) !== '\n' && currentCharacter(state) !== '') {
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271 | state.comment += currentCharacter(state)
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272 | next(state)
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273 | }
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274 | }
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275 |
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276 |
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277 | if (currentCharacter(state) === '') {
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278 |
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279 | state.tokenType = TOKENTYPE.DELIMITER
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280 | return
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281 | }
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282 |
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283 |
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284 | if (currentCharacter(state) === '\n' && !state.nestingLevel) {
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285 | state.tokenType = TOKENTYPE.DELIMITER
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286 | state.token = currentCharacter(state)
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287 | next(state)
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288 | return
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289 | }
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290 |
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291 | const c1 = currentCharacter(state)
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292 | const c2 = currentString(state, 2)
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293 | const c3 = currentString(state, 3)
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294 | if (c3.length === 3 && DELIMITERS[c3]) {
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295 | state.tokenType = TOKENTYPE.DELIMITER
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296 | state.token = c3
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297 | next(state)
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298 | next(state)
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299 | next(state)
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300 | return
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301 | }
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302 |
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303 |
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304 | if (c2.length === 2 && DELIMITERS[c2]) {
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305 | state.tokenType = TOKENTYPE.DELIMITER
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306 | state.token = c2
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307 | next(state)
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308 | next(state)
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309 | return
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310 | }
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311 |
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312 |
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313 | if (DELIMITERS[c1]) {
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314 | state.tokenType = TOKENTYPE.DELIMITER
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315 | state.token = c1
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316 | next(state)
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317 | return
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318 | }
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319 |
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320 |
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321 | if (parse.isDigitDot(c1)) {
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322 | state.tokenType = TOKENTYPE.NUMBER
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323 |
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324 |
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325 | if (currentCharacter(state) === '.') {
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326 | state.token += currentCharacter(state)
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327 | next(state)
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328 |
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329 | if (!parse.isDigit(currentCharacter(state))) {
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330 |
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331 | state.tokenType = TOKENTYPE.DELIMITER
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332 | }
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333 | } else {
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334 | while (parse.isDigit(currentCharacter(state))) {
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335 | state.token += currentCharacter(state)
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336 | next(state)
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337 | }
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338 | if (parse.isDecimalMark(currentCharacter(state), nextCharacter(state))) {
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339 | state.token += currentCharacter(state)
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340 | next(state)
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341 | }
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342 | }
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343 |
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344 | while (parse.isDigit(currentCharacter(state))) {
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345 | state.token += currentCharacter(state)
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346 | next(state)
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347 | }
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348 |
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349 | if (currentCharacter(state) === 'E' || currentCharacter(state) === 'e') {
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350 | if (parse.isDigit(nextCharacter(state)) || nextCharacter(state) === '-' || nextCharacter(state) === '+') {
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351 | state.token += currentCharacter(state)
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352 | next(state)
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353 |
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354 | if (currentCharacter(state) === '+' || currentCharacter(state) === '-') {
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355 | state.token += currentCharacter(state)
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356 | next(state)
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357 | }
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358 |
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359 | if (!parse.isDigit(currentCharacter(state))) {
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360 | throw createSyntaxError(state, 'Digit expected, got "' + currentCharacter(state) + '"')
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361 | }
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362 |
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363 | while (parse.isDigit(currentCharacter(state))) {
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364 | state.token += currentCharacter(state)
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365 | next(state)
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366 | }
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367 |
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368 | if (parse.isDecimalMark(currentCharacter(state), nextCharacter(state))) {
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369 | throw createSyntaxError(state, 'Digit expected, got "' + currentCharacter(state) + '"')
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370 | }
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371 | } else if (nextCharacter(state) === '.') {
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372 | next(state)
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373 | throw createSyntaxError(state, 'Digit expected, got "' + currentCharacter(state) + '"')
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374 | }
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375 | }
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376 |
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377 | return
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378 | }
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379 |
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380 |
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381 | if (parse.isAlpha(currentCharacter(state), prevCharacter(state), nextCharacter(state))) {
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382 | while (parse.isAlpha(currentCharacter(state), prevCharacter(state), nextCharacter(state)) || parse.isDigit(currentCharacter(state))) {
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383 | state.token += currentCharacter(state)
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384 | next(state)
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385 | }
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386 |
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387 | if (hasOwnProperty(NAMED_DELIMITERS, state.token)) {
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388 | state.tokenType = TOKENTYPE.DELIMITER
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389 | } else {
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390 | state.tokenType = TOKENTYPE.SYMBOL
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391 | }
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392 |
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393 | return
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394 | }
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395 |
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396 |
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397 | state.tokenType = TOKENTYPE.UNKNOWN
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398 | while (currentCharacter(state) !== '') {
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399 | state.token += currentCharacter(state)
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400 | next(state)
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401 | }
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402 | throw createSyntaxError(state, 'Syntax error in part "' + state.token + '"')
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403 | }
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404 |
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405 | |
406 |
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407 |
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408 | function getTokenSkipNewline (state) {
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409 | do {
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410 | getToken(state)
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411 | }
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412 | while (state.token === '\n')
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413 | }
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414 |
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415 | |
416 |
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417 |
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418 |
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419 | function openParams (state) {
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420 | state.nestingLevel++
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421 | }
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422 |
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423 | |
424 |
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425 |
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426 |
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427 | function closeParams (state) {
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428 | state.nestingLevel--
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429 | }
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430 |
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431 | |
432 |
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433 |
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434 |
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435 |
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436 |
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437 |
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438 |
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439 |
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440 |
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441 |
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442 |
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443 |
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444 |
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445 |
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446 |
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447 |
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448 |
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449 | parse.isAlpha = function isAlpha (c, cPrev, cNext) {
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450 | return parse.isValidLatinOrGreek(c) ||
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451 | parse.isValidMathSymbol(c, cNext) ||
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452 | parse.isValidMathSymbol(cPrev, c)
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453 | }
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454 |
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455 | |
456 |
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457 |
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458 |
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459 |
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460 | parse.isValidLatinOrGreek = function isValidLatinOrGreek (c) {
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461 | return /^[a-zA-Z_$\u00C0-\u02AF\u0370-\u03FF\u2100-\u214F]$/.test(c)
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462 | }
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463 |
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464 | |
465 |
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466 |
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467 |
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468 |
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469 |
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470 |
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471 |
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472 |
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473 |
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474 |
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475 |
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476 |
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477 |
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478 |
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479 | parse.isValidMathSymbol = function isValidMathSymbol (high, low) {
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480 | return /^[\uD835]$/.test(high) &&
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481 | /^[\uDC00-\uDFFF]$/.test(low) &&
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482 | /^[^\uDC55\uDC9D\uDCA0\uDCA1\uDCA3\uDCA4\uDCA7\uDCA8\uDCAD\uDCBA\uDCBC\uDCC4\uDD06\uDD0B\uDD0C\uDD15\uDD1D\uDD3A\uDD3F\uDD45\uDD47-\uDD49\uDD51\uDEA6\uDEA7\uDFCC\uDFCD]$/.test(low)
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483 | }
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484 |
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485 | |
486 |
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487 |
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488 |
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489 |
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490 |
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491 | parse.isWhitespace = function isWhitespace (c, nestingLevel) {
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492 |
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493 | return c === ' ' || c === '\t' || (c === '\n' && nestingLevel > 0)
|
494 | }
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495 |
|
496 | |
497 |
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498 |
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499 |
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500 |
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501 |
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502 |
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503 | parse.isDecimalMark = function isDecimalMark (c, cNext) {
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504 | return c === '.' && cNext !== '/' && cNext !== '*' && cNext !== '^'
|
505 | }
|
506 |
|
507 | |
508 |
|
509 |
|
510 |
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511 |
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512 | parse.isDigitDot = function isDigitDot (c) {
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513 | return ((c >= '0' && c <= '9') || c === '.')
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514 | }
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515 |
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516 | |
517 |
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518 |
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519 |
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520 |
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521 | parse.isDigit = function isDigit (c) {
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522 | return (c >= '0' && c <= '9')
|
523 | }
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524 |
|
525 | |
526 |
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527 |
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528 |
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529 |
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530 | function parseStart (expression, extraNodes) {
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531 | const state = initialState()
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532 | Object.assign(state, { expression, extraNodes })
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533 | getToken(state)
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534 |
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535 | const node = parseBlock(state)
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536 |
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537 |
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538 |
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539 | if (state.token !== '') {
|
540 | if (state.tokenType === TOKENTYPE.DELIMITER) {
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541 |
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542 |
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543 |
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544 | throw createError(state, 'Unexpected operator ' + state.token)
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545 | } else {
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546 | throw createSyntaxError(state, 'Unexpected part "' + state.token + '"')
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547 | }
|
548 | }
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549 |
|
550 | return node
|
551 | }
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552 |
|
553 | |
554 |
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555 |
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556 |
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557 |
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558 |
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559 |
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560 | function parseBlock (state) {
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561 | let node
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562 | const blocks = []
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563 | let visible
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564 |
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565 | if (state.token !== '' && state.token !== '\n' && state.token !== ';') {
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566 | node = parseAssignment(state)
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567 | node.comment = state.comment
|
568 | }
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569 |
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570 |
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571 | while (state.token === '\n' || state.token === ';') {
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572 | if (blocks.length === 0 && node) {
|
573 | visible = (state.token !== ';')
|
574 | blocks.push({
|
575 | node: node,
|
576 | visible: visible
|
577 | })
|
578 | }
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579 |
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580 | getToken(state)
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581 | if (state.token !== '\n' && state.token !== ';' && state.token !== '') {
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582 | node = parseAssignment(state)
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583 | node.comment = state.comment
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584 |
|
585 | visible = (state.token !== ';')
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586 | blocks.push({
|
587 | node: node,
|
588 | visible: visible
|
589 | })
|
590 | }
|
591 | }
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592 |
|
593 | if (blocks.length > 0) {
|
594 | return new BlockNode(blocks)
|
595 | } else {
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596 | if (!node) {
|
597 | node = new ConstantNode(undefined)
|
598 | node.comment = state.comment
|
599 | }
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600 |
|
601 | return node
|
602 | }
|
603 | }
|
604 |
|
605 | |
606 |
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607 |
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608 |
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609 |
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610 |
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611 |
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612 |
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613 | function parseAssignment (state) {
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614 | let name, args, value, valid
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615 |
|
616 | const node = parseConditional(state)
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617 |
|
618 | if (state.token === '=') {
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619 | if (isSymbolNode(node)) {
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620 |
|
621 | name = node.name
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622 | getTokenSkipNewline(state)
|
623 | value = parseAssignment(state)
|
624 | return new AssignmentNode(new SymbolNode(name), value)
|
625 | } else if (isAccessorNode(node)) {
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626 |
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627 | getTokenSkipNewline(state)
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628 | value = parseAssignment(state)
|
629 | return new AssignmentNode(node.object, node.index, value)
|
630 | } else if (isFunctionNode(node) && isSymbolNode(node.fn)) {
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631 |
|
632 | valid = true
|
633 | args = []
|
634 |
|
635 | name = node.name
|
636 | node.args.forEach(function (arg, index) {
|
637 | if (isSymbolNode(arg)) {
|
638 | args[index] = arg.name
|
639 | } else {
|
640 | valid = false
|
641 | }
|
642 | })
|
643 |
|
644 | if (valid) {
|
645 | getTokenSkipNewline(state)
|
646 | value = parseAssignment(state)
|
647 | return new FunctionAssignmentNode(name, args, value)
|
648 | }
|
649 | }
|
650 |
|
651 | throw createSyntaxError(state, 'Invalid left hand side of assignment operator =')
|
652 | }
|
653 |
|
654 | return node
|
655 | }
|
656 |
|
657 | |
658 |
|
659 |
|
660 |
|
661 |
|
662 |
|
663 |
|
664 |
|
665 |
|
666 |
|
667 | function parseConditional (state) {
|
668 | let node = parseLogicalOr(state)
|
669 |
|
670 | while (state.token === '?') {
|
671 |
|
672 |
|
673 | const prev = state.conditionalLevel
|
674 | state.conditionalLevel = state.nestingLevel
|
675 | getTokenSkipNewline(state)
|
676 |
|
677 | const condition = node
|
678 | const trueExpr = parseAssignment(state)
|
679 |
|
680 | if (state.token !== ':') throw createSyntaxError(state, 'False part of conditional expression expected')
|
681 |
|
682 | state.conditionalLevel = null
|
683 | getTokenSkipNewline(state)
|
684 |
|
685 | const falseExpr = parseAssignment(state)
|
686 |
|
687 | node = new ConditionalNode(condition, trueExpr, falseExpr)
|
688 |
|
689 |
|
690 | state.conditionalLevel = prev
|
691 | }
|
692 |
|
693 | return node
|
694 | }
|
695 |
|
696 | |
697 |
|
698 |
|
699 |
|
700 |
|
701 | function parseLogicalOr (state) {
|
702 | let node = parseLogicalXor(state)
|
703 |
|
704 | while (state.token === 'or') {
|
705 | getTokenSkipNewline(state)
|
706 | node = new OperatorNode('or', 'or', [node, parseLogicalXor(state)])
|
707 | }
|
708 |
|
709 | return node
|
710 | }
|
711 |
|
712 | |
713 |
|
714 |
|
715 |
|
716 |
|
717 | function parseLogicalXor (state) {
|
718 | let node = parseLogicalAnd(state)
|
719 |
|
720 | while (state.token === 'xor') {
|
721 | getTokenSkipNewline(state)
|
722 | node = new OperatorNode('xor', 'xor', [node, parseLogicalAnd(state)])
|
723 | }
|
724 |
|
725 | return node
|
726 | }
|
727 |
|
728 | |
729 |
|
730 |
|
731 |
|
732 |
|
733 | function parseLogicalAnd (state) {
|
734 | let node = parseBitwiseOr(state)
|
735 |
|
736 | while (state.token === 'and') {
|
737 | getTokenSkipNewline(state)
|
738 | node = new OperatorNode('and', 'and', [node, parseBitwiseOr(state)])
|
739 | }
|
740 |
|
741 | return node
|
742 | }
|
743 |
|
744 | |
745 |
|
746 |
|
747 |
|
748 |
|
749 | function parseBitwiseOr (state) {
|
750 | let node = parseBitwiseXor(state)
|
751 |
|
752 | while (state.token === '|') {
|
753 | getTokenSkipNewline(state)
|
754 | node = new OperatorNode('|', 'bitOr', [node, parseBitwiseXor(state)])
|
755 | }
|
756 |
|
757 | return node
|
758 | }
|
759 |
|
760 | |
761 |
|
762 |
|
763 |
|
764 |
|
765 | function parseBitwiseXor (state) {
|
766 | let node = parseBitwiseAnd(state)
|
767 |
|
768 | while (state.token === '^|') {
|
769 | getTokenSkipNewline(state)
|
770 | node = new OperatorNode('^|', 'bitXor', [node, parseBitwiseAnd(state)])
|
771 | }
|
772 |
|
773 | return node
|
774 | }
|
775 |
|
776 | |
777 |
|
778 |
|
779 |
|
780 |
|
781 | function parseBitwiseAnd (state) {
|
782 | let node = parseRelational(state)
|
783 |
|
784 | while (state.token === '&') {
|
785 | getTokenSkipNewline(state)
|
786 | node = new OperatorNode('&', 'bitAnd', [node, parseRelational(state)])
|
787 | }
|
788 |
|
789 | return node
|
790 | }
|
791 |
|
792 | |
793 |
|
794 |
|
795 |
|
796 | function parseRelational (state) {
|
797 | const params = [parseShift(state)]
|
798 | const conditionals = []
|
799 |
|
800 | const operators = {
|
801 | '==': 'equal',
|
802 | '!=': 'unequal',
|
803 | '<': 'smaller',
|
804 | '>': 'larger',
|
805 | '<=': 'smallerEq',
|
806 | '>=': 'largerEq'
|
807 | }
|
808 |
|
809 | while (hasOwnProperty(operators, state.token)) {
|
810 | const cond = { name: state.token, fn: operators[state.token] }
|
811 | conditionals.push(cond)
|
812 | getTokenSkipNewline(state)
|
813 | params.push(parseShift(state))
|
814 | }
|
815 |
|
816 | if (params.length === 1) {
|
817 | return params[0]
|
818 | } else if (params.length === 2) {
|
819 | return new OperatorNode(conditionals[0].name, conditionals[0].fn, params)
|
820 | } else {
|
821 | return new RelationalNode(conditionals.map(c => c.fn), params)
|
822 | }
|
823 | }
|
824 |
|
825 | |
826 |
|
827 |
|
828 |
|
829 |
|
830 | function parseShift (state) {
|
831 | let node, name, fn, params
|
832 |
|
833 | node = parseConversion(state)
|
834 |
|
835 | const operators = {
|
836 | '<<': 'leftShift',
|
837 | '>>': 'rightArithShift',
|
838 | '>>>': 'rightLogShift'
|
839 | }
|
840 |
|
841 | while (hasOwnProperty(operators, state.token)) {
|
842 | name = state.token
|
843 | fn = operators[name]
|
844 |
|
845 | getTokenSkipNewline(state)
|
846 | params = [node, parseConversion(state)]
|
847 | node = new OperatorNode(name, fn, params)
|
848 | }
|
849 |
|
850 | return node
|
851 | }
|
852 |
|
853 | |
854 |
|
855 |
|
856 |
|
857 |
|
858 | function parseConversion (state) {
|
859 | let node, name, fn, params
|
860 |
|
861 | node = parseRange(state)
|
862 |
|
863 | const operators = {
|
864 | to: 'to',
|
865 | in: 'to'
|
866 | }
|
867 |
|
868 | while (hasOwnProperty(operators, state.token)) {
|
869 | name = state.token
|
870 | fn = operators[name]
|
871 |
|
872 | getTokenSkipNewline(state)
|
873 |
|
874 | if (name === 'in' && state.token === '') {
|
875 |
|
876 | node = new OperatorNode('*', 'multiply', [node, new SymbolNode('in')], true)
|
877 | } else {
|
878 |
|
879 | params = [node, parseRange(state)]
|
880 | node = new OperatorNode(name, fn, params)
|
881 | }
|
882 | }
|
883 |
|
884 | return node
|
885 | }
|
886 |
|
887 | |
888 |
|
889 |
|
890 |
|
891 |
|
892 | function parseRange (state) {
|
893 | let node
|
894 | const params = []
|
895 |
|
896 | if (state.token === ':') {
|
897 |
|
898 | node = new ConstantNode(1)
|
899 | } else {
|
900 |
|
901 | node = parseAddSubtract(state)
|
902 | }
|
903 |
|
904 | if (state.token === ':' && (state.conditionalLevel !== state.nestingLevel)) {
|
905 |
|
906 | params.push(node)
|
907 |
|
908 |
|
909 | while (state.token === ':' && params.length < 3) {
|
910 | getTokenSkipNewline(state)
|
911 |
|
912 | if (state.token === ')' || state.token === ']' || state.token === ',' || state.token === '') {
|
913 |
|
914 | params.push(new SymbolNode('end'))
|
915 | } else {
|
916 |
|
917 | params.push(parseAddSubtract(state))
|
918 | }
|
919 | }
|
920 |
|
921 | if (params.length === 3) {
|
922 |
|
923 | node = new RangeNode(params[0], params[2], params[1])
|
924 | } else {
|
925 |
|
926 | node = new RangeNode(params[0], params[1])
|
927 | }
|
928 | }
|
929 |
|
930 | return node
|
931 | }
|
932 |
|
933 | |
934 |
|
935 |
|
936 |
|
937 |
|
938 | function parseAddSubtract (state) {
|
939 | let node, name, fn, params
|
940 |
|
941 | node = parseMultiplyDivide(state)
|
942 |
|
943 | const operators = {
|
944 | '+': 'add',
|
945 | '-': 'subtract'
|
946 | }
|
947 | while (hasOwnProperty(operators, state.token)) {
|
948 | name = state.token
|
949 | fn = operators[name]
|
950 |
|
951 | getTokenSkipNewline(state)
|
952 | params = [node, parseMultiplyDivide(state)]
|
953 | node = new OperatorNode(name, fn, params)
|
954 | }
|
955 |
|
956 | return node
|
957 | }
|
958 |
|
959 | |
960 |
|
961 |
|
962 |
|
963 |
|
964 | function parseMultiplyDivide (state) {
|
965 | let node, last, name, fn
|
966 |
|
967 | node = parseImplicitMultiplication(state)
|
968 | last = node
|
969 |
|
970 | const operators = {
|
971 | '*': 'multiply',
|
972 | '.*': 'dotMultiply',
|
973 | '/': 'divide',
|
974 | './': 'dotDivide',
|
975 | '%': 'mod',
|
976 | mod: 'mod'
|
977 | }
|
978 |
|
979 | while (true) {
|
980 | if (hasOwnProperty(operators, state.token)) {
|
981 |
|
982 | name = state.token
|
983 | fn = operators[name]
|
984 |
|
985 | getTokenSkipNewline(state)
|
986 |
|
987 | last = parseImplicitMultiplication(state)
|
988 | node = new OperatorNode(name, fn, [node, last])
|
989 | } else {
|
990 | break
|
991 | }
|
992 | }
|
993 |
|
994 | return node
|
995 | }
|
996 |
|
997 | |
998 |
|
999 |
|
1000 |
|
1001 |
|
1002 | function parseImplicitMultiplication (state) {
|
1003 | let node, last
|
1004 |
|
1005 | node = parseRule2(state)
|
1006 | last = node
|
1007 |
|
1008 | while (true) {
|
1009 | if ((state.tokenType === TOKENTYPE.SYMBOL) ||
|
1010 | (state.token === 'in' && isConstantNode(node)) ||
|
1011 | (state.tokenType === TOKENTYPE.NUMBER &&
|
1012 | !isConstantNode(last) &&
|
1013 | (!isOperatorNode(last) || last.op === '!')) ||
|
1014 | (state.token === '(')) {
|
1015 |
|
1016 |
|
1017 |
|
1018 |
|
1019 |
|
1020 | last = parseRule2(state)
|
1021 | node = new OperatorNode('*', 'multiply', [node, last], true )
|
1022 | } else {
|
1023 | break
|
1024 | }
|
1025 | }
|
1026 |
|
1027 | return node
|
1028 | }
|
1029 |
|
1030 | |
1031 |
|
1032 |
|
1033 |
|
1034 |
|
1035 |
|
1036 |
|
1037 | function parseRule2 (state) {
|
1038 | let node = parseUnary(state)
|
1039 | let last = node
|
1040 | const tokenStates = []
|
1041 |
|
1042 | while (true) {
|
1043 |
|
1044 | if (state.token === '/' && isConstantNode(last)) {
|
1045 |
|
1046 | tokenStates.push(Object.assign({}, state))
|
1047 | getTokenSkipNewline(state)
|
1048 |
|
1049 |
|
1050 | if (state.tokenType === TOKENTYPE.NUMBER) {
|
1051 |
|
1052 | tokenStates.push(Object.assign({}, state))
|
1053 | getTokenSkipNewline(state)
|
1054 |
|
1055 |
|
1056 | if (state.tokenType === TOKENTYPE.SYMBOL || state.token === '(') {
|
1057 |
|
1058 |
|
1059 | Object.assign(state, tokenStates.pop())
|
1060 | tokenStates.pop()
|
1061 | last = parseUnary(state)
|
1062 | node = new OperatorNode('/', 'divide', [node, last])
|
1063 | } else {
|
1064 |
|
1065 | tokenStates.pop()
|
1066 | Object.assign(state, tokenStates.pop())
|
1067 | break
|
1068 | }
|
1069 | } else {
|
1070 |
|
1071 | Object.assign(state, tokenStates.pop())
|
1072 | break
|
1073 | }
|
1074 | } else {
|
1075 | break
|
1076 | }
|
1077 | }
|
1078 |
|
1079 | return node
|
1080 | }
|
1081 |
|
1082 | |
1083 |
|
1084 |
|
1085 |
|
1086 |
|
1087 | function parseUnary (state) {
|
1088 | let name, params, fn
|
1089 | const operators = {
|
1090 | '-': 'unaryMinus',
|
1091 | '+': 'unaryPlus',
|
1092 | '~': 'bitNot',
|
1093 | not: 'not'
|
1094 | }
|
1095 |
|
1096 | if (hasOwnProperty(operators, state.token)) {
|
1097 | fn = operators[state.token]
|
1098 | name = state.token
|
1099 |
|
1100 | getTokenSkipNewline(state)
|
1101 | params = [parseUnary(state)]
|
1102 |
|
1103 | return new OperatorNode(name, fn, params)
|
1104 | }
|
1105 |
|
1106 | return parsePow(state)
|
1107 | }
|
1108 |
|
1109 | |
1110 |
|
1111 |
|
1112 |
|
1113 |
|
1114 |
|
1115 | function parsePow (state) {
|
1116 | let node, name, fn, params
|
1117 |
|
1118 | node = parseLeftHandOperators(state)
|
1119 |
|
1120 | if (state.token === '^' || state.token === '.^') {
|
1121 | name = state.token
|
1122 | fn = (name === '^') ? 'pow' : 'dotPow'
|
1123 |
|
1124 | getTokenSkipNewline(state)
|
1125 | params = [node, parseUnary(state)]
|
1126 | node = new OperatorNode(name, fn, params)
|
1127 | }
|
1128 |
|
1129 | return node
|
1130 | }
|
1131 |
|
1132 | |
1133 |
|
1134 |
|
1135 |
|
1136 |
|
1137 | function parseLeftHandOperators (state) {
|
1138 | let node, name, fn, params
|
1139 |
|
1140 | node = parseCustomNodes(state)
|
1141 |
|
1142 | const operators = {
|
1143 | '!': 'factorial',
|
1144 | '\'': 'ctranspose'
|
1145 | }
|
1146 |
|
1147 | while (hasOwnProperty(operators, state.token)) {
|
1148 | name = state.token
|
1149 | fn = operators[name]
|
1150 |
|
1151 | getToken(state)
|
1152 | params = [node]
|
1153 |
|
1154 | node = new OperatorNode(name, fn, params)
|
1155 | node = parseAccessors(state, node)
|
1156 | }
|
1157 |
|
1158 | return node
|
1159 | }
|
1160 |
|
1161 | |
1162 |
|
1163 |
|
1164 |
|
1165 |
|
1166 |
|
1167 |
|
1168 |
|
1169 |
|
1170 |
|
1171 |
|
1172 |
|
1173 |
|
1174 |
|
1175 |
|
1176 |
|
1177 |
|
1178 |
|
1179 |
|
1180 |
|
1181 |
|
1182 |
|
1183 |
|
1184 |
|
1185 |
|
1186 |
|
1187 |
|
1188 |
|
1189 | function parseCustomNodes (state) {
|
1190 | let params = []
|
1191 |
|
1192 | if (state.tokenType === TOKENTYPE.SYMBOL && hasOwnProperty(state.extraNodes, state.token)) {
|
1193 | const CustomNode = state.extraNodes[state.token]
|
1194 |
|
1195 | getToken(state)
|
1196 |
|
1197 |
|
1198 | if (state.token === '(') {
|
1199 | params = []
|
1200 |
|
1201 | openParams(state)
|
1202 | getToken(state)
|
1203 |
|
1204 | if (state.token !== ')') {
|
1205 | params.push(parseAssignment(state))
|
1206 |
|
1207 |
|
1208 | while (state.token === ',') {
|
1209 | getToken(state)
|
1210 | params.push(parseAssignment(state))
|
1211 | }
|
1212 | }
|
1213 |
|
1214 | if (state.token !== ')') {
|
1215 | throw createSyntaxError(state, 'Parenthesis ) expected')
|
1216 | }
|
1217 | closeParams(state)
|
1218 | getToken(state)
|
1219 | }
|
1220 |
|
1221 |
|
1222 |
|
1223 | return new CustomNode(params)
|
1224 | }
|
1225 |
|
1226 | return parseSymbol(state)
|
1227 | }
|
1228 |
|
1229 | |
1230 |
|
1231 |
|
1232 |
|
1233 |
|
1234 | function parseSymbol (state) {
|
1235 | let node, name
|
1236 |
|
1237 | if (state.tokenType === TOKENTYPE.SYMBOL ||
|
1238 | (state.tokenType === TOKENTYPE.DELIMITER && state.token in NAMED_DELIMITERS)) {
|
1239 | name = state.token
|
1240 |
|
1241 | getToken(state)
|
1242 |
|
1243 | if (hasOwnProperty(CONSTANTS, name)) {
|
1244 | node = new ConstantNode(CONSTANTS[name])
|
1245 | } else if (NUMERIC_CONSTANTS.indexOf(name) !== -1) {
|
1246 | node = new ConstantNode(numeric(name, 'number'))
|
1247 | } else {
|
1248 | node = new SymbolNode(name)
|
1249 | }
|
1250 |
|
1251 |
|
1252 | node = parseAccessors(state, node)
|
1253 | return node
|
1254 | }
|
1255 |
|
1256 | return parseDoubleQuotesString(state)
|
1257 | }
|
1258 |
|
1259 | |
1260 |
|
1261 |
|
1262 |
|
1263 |
|
1264 |
|
1265 |
|
1266 |
|
1267 |
|
1268 |
|
1269 |
|
1270 |
|
1271 |
|
1272 |
|
1273 | function parseAccessors (state, node, types) {
|
1274 | let params
|
1275 |
|
1276 | while ((state.token === '(' || state.token === '[' || state.token === '.') &&
|
1277 | (!types || types.indexOf(state.token) !== -1)) {
|
1278 | params = []
|
1279 |
|
1280 | if (state.token === '(') {
|
1281 | if (isSymbolNode(node) || isAccessorNode(node)) {
|
1282 |
|
1283 | openParams(state)
|
1284 | getToken(state)
|
1285 |
|
1286 | if (state.token !== ')') {
|
1287 | params.push(parseAssignment(state))
|
1288 |
|
1289 |
|
1290 | while (state.token === ',') {
|
1291 | getToken(state)
|
1292 | params.push(parseAssignment(state))
|
1293 | }
|
1294 | }
|
1295 |
|
1296 | if (state.token !== ')') {
|
1297 | throw createSyntaxError(state, 'Parenthesis ) expected')
|
1298 | }
|
1299 | closeParams(state)
|
1300 | getToken(state)
|
1301 |
|
1302 | node = new FunctionNode(node, params)
|
1303 | } else {
|
1304 |
|
1305 |
|
1306 |
|
1307 | return node
|
1308 | }
|
1309 | } else if (state.token === '[') {
|
1310 |
|
1311 | openParams(state)
|
1312 | getToken(state)
|
1313 |
|
1314 | if (state.token !== ']') {
|
1315 | params.push(parseAssignment(state))
|
1316 |
|
1317 |
|
1318 | while (state.token === ',') {
|
1319 | getToken(state)
|
1320 | params.push(parseAssignment(state))
|
1321 | }
|
1322 | }
|
1323 |
|
1324 | if (state.token !== ']') {
|
1325 | throw createSyntaxError(state, 'Parenthesis ] expected')
|
1326 | }
|
1327 | closeParams(state)
|
1328 | getToken(state)
|
1329 |
|
1330 | node = new AccessorNode(node, new IndexNode(params))
|
1331 | } else {
|
1332 |
|
1333 | getToken(state)
|
1334 |
|
1335 | if (state.tokenType !== TOKENTYPE.SYMBOL) {
|
1336 | throw createSyntaxError(state, 'Property name expected after dot')
|
1337 | }
|
1338 | params.push(new ConstantNode(state.token))
|
1339 | getToken(state)
|
1340 |
|
1341 | const dotNotation = true
|
1342 | node = new AccessorNode(node, new IndexNode(params, dotNotation))
|
1343 | }
|
1344 | }
|
1345 |
|
1346 | return node
|
1347 | }
|
1348 |
|
1349 | |
1350 |
|
1351 |
|
1352 |
|
1353 |
|
1354 | function parseDoubleQuotesString (state) {
|
1355 | let node, str
|
1356 |
|
1357 | if (state.token === '"') {
|
1358 | str = parseDoubleQuotesStringToken(state)
|
1359 |
|
1360 |
|
1361 | node = new ConstantNode(str)
|
1362 |
|
1363 |
|
1364 | node = parseAccessors(state, node)
|
1365 |
|
1366 | return node
|
1367 | }
|
1368 |
|
1369 | return parseSingleQuotesString(state)
|
1370 | }
|
1371 |
|
1372 | |
1373 |
|
1374 |
|
1375 |
|
1376 | function parseDoubleQuotesStringToken (state) {
|
1377 | let str = ''
|
1378 |
|
1379 | while (currentCharacter(state) !== '' && currentCharacter(state) !== '"') {
|
1380 | if (currentCharacter(state) === '\\') {
|
1381 |
|
1382 |
|
1383 | str += currentCharacter(state)
|
1384 | next(state)
|
1385 | }
|
1386 |
|
1387 | str += currentCharacter(state)
|
1388 | next(state)
|
1389 | }
|
1390 |
|
1391 | getToken(state)
|
1392 | if (state.token !== '"') {
|
1393 | throw createSyntaxError(state, 'End of string " expected')
|
1394 | }
|
1395 | getToken(state)
|
1396 |
|
1397 | return JSON.parse('"' + str + '"')
|
1398 | }
|
1399 |
|
1400 | |
1401 |
|
1402 |
|
1403 |
|
1404 |
|
1405 | function parseSingleQuotesString (state) {
|
1406 | let node, str
|
1407 |
|
1408 | if (state.token === '\'') {
|
1409 | str = parseSingleQuotesStringToken(state)
|
1410 |
|
1411 |
|
1412 | node = new ConstantNode(str)
|
1413 |
|
1414 |
|
1415 | node = parseAccessors(state, node)
|
1416 |
|
1417 | return node
|
1418 | }
|
1419 |
|
1420 | return parseMatrix(state)
|
1421 | }
|
1422 |
|
1423 | |
1424 |
|
1425 |
|
1426 |
|
1427 | function parseSingleQuotesStringToken (state) {
|
1428 | let str = ''
|
1429 |
|
1430 | while (currentCharacter(state) !== '' && currentCharacter(state) !== '\'') {
|
1431 | if (currentCharacter(state) === '\\') {
|
1432 |
|
1433 |
|
1434 | str += currentCharacter(state)
|
1435 | next(state)
|
1436 | }
|
1437 |
|
1438 | str += currentCharacter(state)
|
1439 | next(state)
|
1440 | }
|
1441 |
|
1442 | getToken(state)
|
1443 | if (state.token !== '\'') {
|
1444 | throw createSyntaxError(state, 'End of string \' expected')
|
1445 | }
|
1446 | getToken(state)
|
1447 |
|
1448 | return JSON.parse('"' + str + '"')
|
1449 | }
|
1450 |
|
1451 | |
1452 |
|
1453 |
|
1454 |
|
1455 |
|
1456 | function parseMatrix (state) {
|
1457 | let array, params, rows, cols
|
1458 |
|
1459 | if (state.token === '[') {
|
1460 |
|
1461 | openParams(state)
|
1462 | getToken(state)
|
1463 |
|
1464 | if (state.token !== ']') {
|
1465 |
|
1466 | const row = parseRow(state)
|
1467 |
|
1468 | if (state.token === ';') {
|
1469 |
|
1470 | rows = 1
|
1471 | params = [row]
|
1472 |
|
1473 |
|
1474 | while (state.token === ';') {
|
1475 | getToken(state)
|
1476 |
|
1477 | params[rows] = parseRow(state)
|
1478 | rows++
|
1479 | }
|
1480 |
|
1481 | if (state.token !== ']') {
|
1482 | throw createSyntaxError(state, 'End of matrix ] expected')
|
1483 | }
|
1484 | closeParams(state)
|
1485 | getToken(state)
|
1486 |
|
1487 |
|
1488 | cols = params[0].items.length
|
1489 | for (let r = 1; r < rows; r++) {
|
1490 | if (params[r].items.length !== cols) {
|
1491 | throw createError(state, 'Column dimensions mismatch ' +
|
1492 | '(' + params[r].items.length + ' !== ' + cols + ')')
|
1493 | }
|
1494 | }
|
1495 |
|
1496 | array = new ArrayNode(params)
|
1497 | } else {
|
1498 |
|
1499 | if (state.token !== ']') {
|
1500 | throw createSyntaxError(state, 'End of matrix ] expected')
|
1501 | }
|
1502 | closeParams(state)
|
1503 | getToken(state)
|
1504 |
|
1505 | array = row
|
1506 | }
|
1507 | } else {
|
1508 |
|
1509 | closeParams(state)
|
1510 | getToken(state)
|
1511 | array = new ArrayNode([])
|
1512 | }
|
1513 |
|
1514 | return parseAccessors(state, array)
|
1515 | }
|
1516 |
|
1517 | return parseObject(state)
|
1518 | }
|
1519 |
|
1520 | |
1521 |
|
1522 |
|
1523 |
|
1524 | function parseRow (state) {
|
1525 | const params = [parseAssignment(state)]
|
1526 | let len = 1
|
1527 |
|
1528 | while (state.token === ',') {
|
1529 | getToken(state)
|
1530 |
|
1531 |
|
1532 | params[len] = parseAssignment(state)
|
1533 | len++
|
1534 | }
|
1535 |
|
1536 | return new ArrayNode(params)
|
1537 | }
|
1538 |
|
1539 | |
1540 |
|
1541 |
|
1542 |
|
1543 |
|
1544 | function parseObject (state) {
|
1545 | if (state.token === '{') {
|
1546 | openParams(state)
|
1547 | let key
|
1548 |
|
1549 | const properties = {}
|
1550 | do {
|
1551 | getToken(state)
|
1552 |
|
1553 | if (state.token !== '}') {
|
1554 |
|
1555 | if (state.token === '"') {
|
1556 | key = parseDoubleQuotesStringToken(state)
|
1557 | } else if (state.token === '\'') {
|
1558 | key = parseSingleQuotesStringToken(state)
|
1559 | } else if (state.tokenType === TOKENTYPE.SYMBOL) {
|
1560 | key = state.token
|
1561 | getToken(state)
|
1562 | } else {
|
1563 | throw createSyntaxError(state, 'Symbol or string expected as object key')
|
1564 | }
|
1565 |
|
1566 |
|
1567 | if (state.token !== ':') {
|
1568 | throw createSyntaxError(state, 'Colon : expected after object key')
|
1569 | }
|
1570 | getToken(state)
|
1571 |
|
1572 |
|
1573 | properties[key] = parseAssignment(state)
|
1574 | }
|
1575 | }
|
1576 | while (state.token === ',')
|
1577 |
|
1578 | if (state.token !== '}') {
|
1579 | throw createSyntaxError(state, 'Comma , or bracket } expected after object value')
|
1580 | }
|
1581 | closeParams(state)
|
1582 | getToken(state)
|
1583 |
|
1584 | let node = new ObjectNode(properties)
|
1585 |
|
1586 |
|
1587 | node = parseAccessors(state, node)
|
1588 |
|
1589 | return node
|
1590 | }
|
1591 |
|
1592 | return parseNumber(state)
|
1593 | }
|
1594 |
|
1595 | |
1596 |
|
1597 |
|
1598 |
|
1599 |
|
1600 | function parseNumber (state) {
|
1601 | let numberStr
|
1602 |
|
1603 | if (state.tokenType === TOKENTYPE.NUMBER) {
|
1604 |
|
1605 | numberStr = state.token
|
1606 | getToken(state)
|
1607 |
|
1608 | return new ConstantNode(numeric(numberStr, config.number))
|
1609 | }
|
1610 |
|
1611 | return parseParentheses(state)
|
1612 | }
|
1613 |
|
1614 | |
1615 |
|
1616 |
|
1617 |
|
1618 |
|
1619 | function parseParentheses (state) {
|
1620 | let node
|
1621 |
|
1622 |
|
1623 | if (state.token === '(') {
|
1624 |
|
1625 | openParams(state)
|
1626 | getToken(state)
|
1627 |
|
1628 | node = parseAssignment(state)
|
1629 |
|
1630 | if (state.token !== ')') {
|
1631 | throw createSyntaxError(state, 'Parenthesis ) expected')
|
1632 | }
|
1633 | closeParams(state)
|
1634 | getToken(state)
|
1635 |
|
1636 | node = new ParenthesisNode(node)
|
1637 | node = parseAccessors(state, node)
|
1638 | return node
|
1639 | }
|
1640 |
|
1641 | return parseEnd(state)
|
1642 | }
|
1643 |
|
1644 | |
1645 |
|
1646 |
|
1647 |
|
1648 |
|
1649 | function parseEnd (state) {
|
1650 | if (state.token === '') {
|
1651 |
|
1652 | throw createSyntaxError(state, 'Unexpected end of expression')
|
1653 | } else {
|
1654 | throw createSyntaxError(state, 'Value expected')
|
1655 | }
|
1656 | }
|
1657 |
|
1658 | |
1659 |
|
1660 |
|
1661 |
|
1662 |
|
1663 | |
1664 |
|
1665 |
|
1666 |
|
1667 |
|
1668 |
|
1669 | |
1670 |
|
1671 |
|
1672 |
|
1673 |
|
1674 | function col (state) {
|
1675 | return state.index - state.token.length + 1
|
1676 | }
|
1677 |
|
1678 | |
1679 |
|
1680 |
|
1681 |
|
1682 |
|
1683 |
|
1684 |
|
1685 | function createSyntaxError (state, message) {
|
1686 | const c = col(state)
|
1687 | const error = new SyntaxError(message + ' (char ' + c + ')')
|
1688 | error.char = c
|
1689 |
|
1690 | return error
|
1691 | }
|
1692 |
|
1693 | |
1694 |
|
1695 |
|
1696 |
|
1697 |
|
1698 |
|
1699 |
|
1700 | function createError (state, message) {
|
1701 | const c = col(state)
|
1702 | const error = new SyntaxError(message + ' (char ' + c + ')')
|
1703 | error.char = c
|
1704 |
|
1705 | return error
|
1706 | }
|
1707 |
|
1708 | return parse
|
1709 | })
|