1 |
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2 |
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3 |
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4 |
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5 | "use strict";
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6 |
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7 |
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8 |
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9 | const acorn = require("acorn-dynamic-import").default;
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10 | const { Tapable, SyncBailHook, HookMap } = require("tapable");
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11 | const util = require("util");
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12 | const vm = require("vm");
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13 | const BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
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14 | const StackedSetMap = require("./util/StackedSetMap");
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15 | const TrackingSet = require("./util/TrackingSet");
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16 |
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17 | const joinRanges = (startRange, endRange) => {
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18 | if (!endRange) return startRange;
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19 | if (!startRange) return endRange;
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20 | return [startRange[0], endRange[1]];
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21 | };
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22 |
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23 | const defaultParserOptions = {
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24 | ranges: true,
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25 | locations: true,
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26 | ecmaVersion: 2019,
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27 | sourceType: "module",
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28 | onComment: null,
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29 | plugins: {
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30 | dynamicImport: true
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31 | }
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32 | };
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33 |
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34 |
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35 | const webpackCommentRegExp = new RegExp(/(^|\W)webpack[A-Z]{1,}[A-Za-z]{1,}:/);
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36 |
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37 | const EMPTY_ARRAY = [];
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38 |
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39 | const EMPTY_COMMENT_OPTIONS = {
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40 | options: null,
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41 | errors: null
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42 | };
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43 |
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44 | class Parser extends Tapable {
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45 | constructor(options, sourceType = "auto") {
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46 | super();
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47 | this.hooks = {
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48 | evaluateTypeof: new HookMap(() => new SyncBailHook(["expression"])),
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49 | evaluate: new HookMap(() => new SyncBailHook(["expression"])),
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50 | evaluateIdentifier: new HookMap(() => new SyncBailHook(["expression"])),
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51 | evaluateDefinedIdentifier: new HookMap(
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52 | () => new SyncBailHook(["expression"])
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53 | ),
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54 | evaluateCallExpressionMember: new HookMap(
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55 | () => new SyncBailHook(["expression", "param"])
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56 | ),
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57 | statement: new SyncBailHook(["statement"]),
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58 | statementIf: new SyncBailHook(["statement"]),
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59 | label: new HookMap(() => new SyncBailHook(["statement"])),
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60 | import: new SyncBailHook(["statement", "source"]),
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61 | importSpecifier: new SyncBailHook([
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62 | "statement",
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63 | "source",
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64 | "exportName",
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65 | "identifierName"
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66 | ]),
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67 | export: new SyncBailHook(["statement"]),
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68 | exportImport: new SyncBailHook(["statement", "source"]),
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69 | exportDeclaration: new SyncBailHook(["statement", "declaration"]),
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70 | exportExpression: new SyncBailHook(["statement", "declaration"]),
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71 | exportSpecifier: new SyncBailHook([
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72 | "statement",
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73 | "identifierName",
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74 | "exportName",
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75 | "index"
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76 | ]),
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77 | exportImportSpecifier: new SyncBailHook([
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78 | "statement",
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79 | "source",
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80 | "identifierName",
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81 | "exportName",
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82 | "index"
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83 | ]),
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84 | varDeclaration: new HookMap(() => new SyncBailHook(["declaration"])),
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85 | varDeclarationLet: new HookMap(() => new SyncBailHook(["declaration"])),
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86 | varDeclarationConst: new HookMap(() => new SyncBailHook(["declaration"])),
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87 | varDeclarationVar: new HookMap(() => new SyncBailHook(["declaration"])),
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88 | canRename: new HookMap(() => new SyncBailHook(["initExpression"])),
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89 | rename: new HookMap(() => new SyncBailHook(["initExpression"])),
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90 | assigned: new HookMap(() => new SyncBailHook(["expression"])),
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91 | assign: new HookMap(() => new SyncBailHook(["expression"])),
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92 | typeof: new HookMap(() => new SyncBailHook(["expression"])),
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93 | importCall: new SyncBailHook(["expression"]),
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94 | call: new HookMap(() => new SyncBailHook(["expression"])),
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95 | callAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
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96 | new: new HookMap(() => new SyncBailHook(["expression"])),
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97 | expression: new HookMap(() => new SyncBailHook(["expression"])),
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98 | expressionAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
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99 | expressionConditionalOperator: new SyncBailHook(["expression"]),
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100 | expressionLogicalOperator: new SyncBailHook(["expression"]),
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101 | program: new SyncBailHook(["ast", "comments"])
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102 | };
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103 | const HOOK_MAP_COMPAT_CONFIG = {
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104 | evaluateTypeof: /^evaluate typeof (.+)$/,
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105 | evaluateIdentifier: /^evaluate Identifier (.+)$/,
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106 | evaluateDefinedIdentifier: /^evaluate defined Identifier (.+)$/,
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107 | evaluateCallExpressionMember: /^evaluate CallExpression .(.+)$/,
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108 | evaluate: /^evaluate (.+)$/,
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109 | label: /^label (.+)$/,
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110 | varDeclarationLet: /^var-let (.+)$/,
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111 | varDeclarationConst: /^var-const (.+)$/,
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112 | varDeclarationVar: /^var-var (.+)$/,
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113 | varDeclaration: /^var (.+)$/,
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114 | canRename: /^can-rename (.+)$/,
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115 | rename: /^rename (.+)$/,
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116 | typeof: /^typeof (.+)$/,
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117 | assigned: /^assigned (.+)$/,
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118 | assign: /^assign (.+)$/,
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119 | callAnyMember: /^call (.+)\.\*$/,
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120 | call: /^call (.+)$/,
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121 | new: /^new (.+)$/,
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122 | expressionConditionalOperator: /^expression \?:$/,
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123 | expressionAnyMember: /^expression (.+)\.\*$/,
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124 | expression: /^expression (.+)$/
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125 | };
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126 | this._pluginCompat.tap("Parser", options => {
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127 | for (const name of Object.keys(HOOK_MAP_COMPAT_CONFIG)) {
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128 | const regexp = HOOK_MAP_COMPAT_CONFIG[name];
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129 | const match = regexp.exec(options.name);
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130 | if (match) {
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131 | if (match[1]) {
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132 | this.hooks[name].tap(
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133 | match[1],
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134 | options.fn.name || "unnamed compat plugin",
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135 | options.fn.bind(this)
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136 | );
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137 | } else {
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138 | this.hooks[name].tap(
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139 | options.fn.name || "unnamed compat plugin",
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140 | options.fn.bind(this)
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141 | );
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142 | }
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143 | return true;
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144 | }
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145 | }
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146 | });
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147 | this.options = options;
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148 | this.sourceType = sourceType;
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149 | this.scope = undefined;
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150 | this.state = undefined;
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151 | this.comments = undefined;
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152 | this.initializeEvaluating();
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153 | }
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154 |
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155 | initializeEvaluating() {
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156 | this.hooks.evaluate.for("Literal").tap("Parser", expr => {
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157 | switch (typeof expr.value) {
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158 | case "number":
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159 | return new BasicEvaluatedExpression()
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160 | .setNumber(expr.value)
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161 | .setRange(expr.range);
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162 | case "string":
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163 | return new BasicEvaluatedExpression()
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164 | .setString(expr.value)
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165 | .setRange(expr.range);
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166 | case "boolean":
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167 | return new BasicEvaluatedExpression()
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168 | .setBoolean(expr.value)
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169 | .setRange(expr.range);
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170 | }
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171 | if (expr.value === null) {
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172 | return new BasicEvaluatedExpression().setNull().setRange(expr.range);
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173 | }
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174 | if (expr.value instanceof RegExp) {
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175 | return new BasicEvaluatedExpression()
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176 | .setRegExp(expr.value)
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177 | .setRange(expr.range);
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178 | }
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179 | });
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180 | this.hooks.evaluate.for("LogicalExpression").tap("Parser", expr => {
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181 | let left;
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182 | let leftAsBool;
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183 | let right;
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184 | if (expr.operator === "&&") {
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185 | left = this.evaluateExpression(expr.left);
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186 | leftAsBool = left && left.asBool();
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187 | if (leftAsBool === false) return left.setRange(expr.range);
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188 | if (leftAsBool !== true) return;
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189 | right = this.evaluateExpression(expr.right);
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190 | return right.setRange(expr.range);
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191 | } else if (expr.operator === "||") {
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192 | left = this.evaluateExpression(expr.left);
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193 | leftAsBool = left && left.asBool();
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194 | if (leftAsBool === true) return left.setRange(expr.range);
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195 | if (leftAsBool !== false) return;
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196 | right = this.evaluateExpression(expr.right);
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197 | return right.setRange(expr.range);
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198 | }
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199 | });
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200 | this.hooks.evaluate.for("BinaryExpression").tap("Parser", expr => {
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201 | let left;
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202 | let right;
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203 | let res;
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204 | if (expr.operator === "+") {
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205 | left = this.evaluateExpression(expr.left);
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206 | right = this.evaluateExpression(expr.right);
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207 | if (!left || !right) return;
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208 | res = new BasicEvaluatedExpression();
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209 | if (left.isString()) {
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210 | if (right.isString()) {
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211 | res.setString(left.string + right.string);
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212 | } else if (right.isNumber()) {
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213 | res.setString(left.string + right.number);
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214 | } else if (
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215 | right.isWrapped() &&
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216 | right.prefix &&
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217 | right.prefix.isString()
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218 | ) {
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219 |
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220 |
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221 | res.setWrapped(
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222 | new BasicEvaluatedExpression()
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223 | .setString(left.string + right.prefix.string)
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224 | .setRange(joinRanges(left.range, right.prefix.range)),
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225 | right.postfix,
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226 | right.wrappedInnerExpressions
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227 | );
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228 | } else if (right.isWrapped()) {
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229 |
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230 |
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231 | res.setWrapped(left, right.postfix, right.wrappedInnerExpressions);
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232 | } else {
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233 |
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234 |
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235 | res.setWrapped(left, null, [right]);
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236 | }
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237 | } else if (left.isNumber()) {
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238 | if (right.isString()) {
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239 | res.setString(left.number + right.string);
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240 | } else if (right.isNumber()) {
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241 | res.setNumber(left.number + right.number);
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242 | } else {
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243 | return;
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244 | }
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245 | } else if (left.isWrapped()) {
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246 | if (left.postfix && left.postfix.isString() && right.isString()) {
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247 |
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248 |
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249 | res.setWrapped(
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250 | left.prefix,
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251 | new BasicEvaluatedExpression()
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252 | .setString(left.postfix.string + right.string)
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253 | .setRange(joinRanges(left.postfix.range, right.range)),
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254 | left.wrappedInnerExpressions
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255 | );
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256 | } else if (
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257 | left.postfix &&
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258 | left.postfix.isString() &&
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259 | right.isNumber()
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260 | ) {
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261 |
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262 |
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263 | res.setWrapped(
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264 | left.prefix,
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265 | new BasicEvaluatedExpression()
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266 | .setString(left.postfix.string + right.number)
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267 | .setRange(joinRanges(left.postfix.range, right.range)),
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268 | left.wrappedInnerExpressions
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269 | );
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270 | } else if (right.isString()) {
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271 |
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272 |
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273 | res.setWrapped(left.prefix, right, left.wrappedInnerExpressions);
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274 | } else if (right.isNumber()) {
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275 |
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276 |
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277 | res.setWrapped(
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278 | left.prefix,
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279 | new BasicEvaluatedExpression()
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280 | .setString(right.number + "")
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281 | .setRange(right.range),
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282 | left.wrappedInnerExpressions
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283 | );
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284 | } else if (right.isWrapped()) {
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285 |
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286 |
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287 | res.setWrapped(
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288 | left.prefix,
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289 | right.postfix,
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290 | left.wrappedInnerExpressions &&
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291 | right.wrappedInnerExpressions &&
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292 | left.wrappedInnerExpressions
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293 | .concat(left.postfix ? [left.postfix] : [])
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294 | .concat(right.prefix ? [right.prefix] : [])
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295 | .concat(right.wrappedInnerExpressions)
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296 | );
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297 | } else {
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298 |
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299 |
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300 | res.setWrapped(
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301 | left.prefix,
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302 | null,
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303 | left.wrappedInnerExpressions &&
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304 | left.wrappedInnerExpressions.concat(
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305 | left.postfix ? [left.postfix, right] : [right]
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306 | )
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307 | );
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308 | }
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309 | } else {
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310 | if (right.isString()) {
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311 |
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312 |
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313 | res.setWrapped(null, right, [left]);
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314 | } else if (right.isWrapped()) {
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315 |
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316 |
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317 | res.setWrapped(
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318 | null,
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319 | right.postfix,
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320 | right.wrappedInnerExpressions &&
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321 | (right.prefix ? [left, right.prefix] : [left]).concat(
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322 | right.wrappedInnerExpressions
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323 | )
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324 | );
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325 | } else {
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326 | return;
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327 | }
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328 | }
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329 | res.setRange(expr.range);
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330 | return res;
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331 | } else if (expr.operator === "-") {
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332 | left = this.evaluateExpression(expr.left);
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333 | right = this.evaluateExpression(expr.right);
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334 | if (!left || !right) return;
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335 | if (!left.isNumber() || !right.isNumber()) return;
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336 | res = new BasicEvaluatedExpression();
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337 | res.setNumber(left.number - right.number);
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338 | res.setRange(expr.range);
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339 | return res;
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340 | } else if (expr.operator === "*") {
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341 | left = this.evaluateExpression(expr.left);
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342 | right = this.evaluateExpression(expr.right);
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343 | if (!left || !right) return;
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344 | if (!left.isNumber() || !right.isNumber()) return;
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345 | res = new BasicEvaluatedExpression();
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346 | res.setNumber(left.number * right.number);
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347 | res.setRange(expr.range);
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348 | return res;
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349 | } else if (expr.operator === "/") {
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350 | left = this.evaluateExpression(expr.left);
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351 | right = this.evaluateExpression(expr.right);
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352 | if (!left || !right) return;
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353 | if (!left.isNumber() || !right.isNumber()) return;
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354 | res = new BasicEvaluatedExpression();
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355 | res.setNumber(left.number / right.number);
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356 | res.setRange(expr.range);
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357 | return res;
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358 | } else if (expr.operator === "**") {
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359 | left = this.evaluateExpression(expr.left);
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360 | right = this.evaluateExpression(expr.right);
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361 | if (!left || !right) return;
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362 | if (!left.isNumber() || !right.isNumber()) return;
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363 | res = new BasicEvaluatedExpression();
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364 | res.setNumber(Math.pow(left.number, right.number));
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365 | res.setRange(expr.range);
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366 | return res;
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367 | } else if (expr.operator === "==" || expr.operator === "===") {
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368 | left = this.evaluateExpression(expr.left);
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369 | right = this.evaluateExpression(expr.right);
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370 | if (!left || !right) return;
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371 | res = new BasicEvaluatedExpression();
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372 | res.setRange(expr.range);
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373 | if (left.isString() && right.isString()) {
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374 | return res.setBoolean(left.string === right.string);
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375 | } else if (left.isNumber() && right.isNumber()) {
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376 | return res.setBoolean(left.number === right.number);
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377 | } else if (left.isBoolean() && right.isBoolean()) {
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378 | return res.setBoolean(left.bool === right.bool);
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379 | }
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380 | } else if (expr.operator === "!=" || expr.operator === "!==") {
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381 | left = this.evaluateExpression(expr.left);
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382 | right = this.evaluateExpression(expr.right);
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383 | if (!left || !right) return;
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384 | res = new BasicEvaluatedExpression();
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385 | res.setRange(expr.range);
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386 | if (left.isString() && right.isString()) {
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387 | return res.setBoolean(left.string !== right.string);
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388 | } else if (left.isNumber() && right.isNumber()) {
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389 | return res.setBoolean(left.number !== right.number);
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390 | } else if (left.isBoolean() && right.isBoolean()) {
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391 | return res.setBoolean(left.bool !== right.bool);
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392 | }
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393 | } else if (expr.operator === "&") {
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394 | left = this.evaluateExpression(expr.left);
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395 | right = this.evaluateExpression(expr.right);
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396 | if (!left || !right) return;
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397 | if (!left.isNumber() || !right.isNumber()) return;
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398 | res = new BasicEvaluatedExpression();
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399 | res.setNumber(left.number & right.number);
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400 | res.setRange(expr.range);
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401 | return res;
|
402 | } else if (expr.operator === "|") {
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403 | left = this.evaluateExpression(expr.left);
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404 | right = this.evaluateExpression(expr.right);
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405 | if (!left || !right) return;
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406 | if (!left.isNumber() || !right.isNumber()) return;
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407 | res = new BasicEvaluatedExpression();
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408 | res.setNumber(left.number | right.number);
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409 | res.setRange(expr.range);
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410 | return res;
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411 | } else if (expr.operator === "^") {
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412 | left = this.evaluateExpression(expr.left);
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413 | right = this.evaluateExpression(expr.right);
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414 | if (!left || !right) return;
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415 | if (!left.isNumber() || !right.isNumber()) return;
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416 | res = new BasicEvaluatedExpression();
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417 | res.setNumber(left.number ^ right.number);
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418 | res.setRange(expr.range);
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419 | return res;
|
420 | } else if (expr.operator === ">>>") {
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421 | left = this.evaluateExpression(expr.left);
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422 | right = this.evaluateExpression(expr.right);
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423 | if (!left || !right) return;
|
424 | if (!left.isNumber() || !right.isNumber()) return;
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425 | res = new BasicEvaluatedExpression();
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426 | res.setNumber(left.number >>> right.number);
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427 | res.setRange(expr.range);
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428 | return res;
|
429 | } else if (expr.operator === ">>") {
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430 | left = this.evaluateExpression(expr.left);
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431 | right = this.evaluateExpression(expr.right);
|
432 | if (!left || !right) return;
|
433 | if (!left.isNumber() || !right.isNumber()) return;
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434 | res = new BasicEvaluatedExpression();
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435 | res.setNumber(left.number >> right.number);
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436 | res.setRange(expr.range);
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437 | return res;
|
438 | } else if (expr.operator === "<<") {
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439 | left = this.evaluateExpression(expr.left);
|
440 | right = this.evaluateExpression(expr.right);
|
441 | if (!left || !right) return;
|
442 | if (!left.isNumber() || !right.isNumber()) return;
|
443 | res = new BasicEvaluatedExpression();
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444 | res.setNumber(left.number << right.number);
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445 | res.setRange(expr.range);
|
446 | return res;
|
447 | }
|
448 | });
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449 | this.hooks.evaluate.for("UnaryExpression").tap("Parser", expr => {
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450 | if (expr.operator === "typeof") {
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451 | let res;
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452 | let name;
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453 | if (expr.argument.type === "Identifier") {
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454 | name =
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455 | this.scope.renames.get(expr.argument.name) || expr.argument.name;
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456 | if (!this.scope.definitions.has(name)) {
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457 | const hook = this.hooks.evaluateTypeof.get(name);
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458 | if (hook !== undefined) {
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459 | res = hook.call(expr);
|
460 | if (res !== undefined) return res;
|
461 | }
|
462 | }
|
463 | }
|
464 | if (expr.argument.type === "MemberExpression") {
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465 | const exprName = this.getNameForExpression(expr.argument);
|
466 | if (exprName && exprName.free) {
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467 | const hook = this.hooks.evaluateTypeof.get(exprName.name);
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468 | if (hook !== undefined) {
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469 | res = hook.call(expr);
|
470 | if (res !== undefined) return res;
|
471 | }
|
472 | }
|
473 | }
|
474 | if (expr.argument.type === "FunctionExpression") {
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475 | return new BasicEvaluatedExpression()
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476 | .setString("function")
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477 | .setRange(expr.range);
|
478 | }
|
479 | const arg = this.evaluateExpression(expr.argument);
|
480 | if (arg.isString() || arg.isWrapped()) {
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481 | return new BasicEvaluatedExpression()
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482 | .setString("string")
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483 | .setRange(expr.range);
|
484 | }
|
485 | if (arg.isNumber()) {
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486 | return new BasicEvaluatedExpression()
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487 | .setString("number")
|
488 | .setRange(expr.range);
|
489 | }
|
490 | if (arg.isBoolean()) {
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491 | return new BasicEvaluatedExpression()
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492 | .setString("boolean")
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493 | .setRange(expr.range);
|
494 | }
|
495 | if (arg.isArray() || arg.isConstArray() || arg.isRegExp()) {
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496 | return new BasicEvaluatedExpression()
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497 | .setString("object")
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498 | .setRange(expr.range);
|
499 | }
|
500 | } else if (expr.operator === "!") {
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501 | const argument = this.evaluateExpression(expr.argument);
|
502 | if (!argument) return;
|
503 | if (argument.isBoolean()) {
|
504 | return new BasicEvaluatedExpression()
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505 | .setBoolean(!argument.bool)
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506 | .setRange(expr.range);
|
507 | }
|
508 | if (argument.isTruthy()) {
|
509 | return new BasicEvaluatedExpression()
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510 | .setBoolean(false)
|
511 | .setRange(expr.range);
|
512 | }
|
513 | if (argument.isFalsy()) {
|
514 | return new BasicEvaluatedExpression()
|
515 | .setBoolean(true)
|
516 | .setRange(expr.range);
|
517 | }
|
518 | if (argument.isString()) {
|
519 | return new BasicEvaluatedExpression()
|
520 | .setBoolean(!argument.string)
|
521 | .setRange(expr.range);
|
522 | }
|
523 | if (argument.isNumber()) {
|
524 | return new BasicEvaluatedExpression()
|
525 | .setBoolean(!argument.number)
|
526 | .setRange(expr.range);
|
527 | }
|
528 | } else if (expr.operator === "~") {
|
529 | const argument = this.evaluateExpression(expr.argument);
|
530 | if (!argument) return;
|
531 | if (!argument.isNumber()) return;
|
532 | const res = new BasicEvaluatedExpression();
|
533 | res.setNumber(~argument.number);
|
534 | res.setRange(expr.range);
|
535 | return res;
|
536 | }
|
537 | });
|
538 | this.hooks.evaluateTypeof.for("undefined").tap("Parser", expr => {
|
539 | return new BasicEvaluatedExpression()
|
540 | .setString("undefined")
|
541 | .setRange(expr.range);
|
542 | });
|
543 | this.hooks.evaluate.for("Identifier").tap("Parser", expr => {
|
544 | const name = this.scope.renames.get(expr.name) || expr.name;
|
545 | if (!this.scope.definitions.has(expr.name)) {
|
546 | const hook = this.hooks.evaluateIdentifier.get(name);
|
547 | if (hook !== undefined) {
|
548 | const result = hook.call(expr);
|
549 | if (result) return result;
|
550 | }
|
551 | return new BasicEvaluatedExpression()
|
552 | .setIdentifier(name)
|
553 | .setRange(expr.range);
|
554 | } else {
|
555 | const hook = this.hooks.evaluateDefinedIdentifier.get(name);
|
556 | if (hook !== undefined) {
|
557 | return hook.call(expr);
|
558 | }
|
559 | }
|
560 | });
|
561 | this.hooks.evaluate.for("ThisExpression").tap("Parser", expr => {
|
562 | const name = this.scope.renames.get("this");
|
563 | if (name) {
|
564 | const hook = this.hooks.evaluateIdentifier.get(name);
|
565 | if (hook !== undefined) {
|
566 | const result = hook.call(expr);
|
567 | if (result) return result;
|
568 | }
|
569 | return new BasicEvaluatedExpression()
|
570 | .setIdentifier(name)
|
571 | .setRange(expr.range);
|
572 | }
|
573 | });
|
574 | this.hooks.evaluate.for("MemberExpression").tap("Parser", expression => {
|
575 | let exprName = this.getNameForExpression(expression);
|
576 | if (exprName) {
|
577 | if (exprName.free) {
|
578 | const hook = this.hooks.evaluateIdentifier.get(exprName.name);
|
579 | if (hook !== undefined) {
|
580 | const result = hook.call(expression);
|
581 | if (result) return result;
|
582 | }
|
583 | return new BasicEvaluatedExpression()
|
584 | .setIdentifier(exprName.name)
|
585 | .setRange(expression.range);
|
586 | } else {
|
587 | const hook = this.hooks.evaluateDefinedIdentifier.get(exprName.name);
|
588 | if (hook !== undefined) {
|
589 | return hook.call(expression);
|
590 | }
|
591 | }
|
592 | }
|
593 | });
|
594 | this.hooks.evaluate.for("CallExpression").tap("Parser", expr => {
|
595 | if (expr.callee.type !== "MemberExpression") return;
|
596 | if (
|
597 | expr.callee.property.type !==
|
598 | (expr.callee.computed ? "Literal" : "Identifier")
|
599 | )
|
600 | return;
|
601 | const param = this.evaluateExpression(expr.callee.object);
|
602 | if (!param) return;
|
603 | const property = expr.callee.property.name || expr.callee.property.value;
|
604 | const hook = this.hooks.evaluateCallExpressionMember.get(property);
|
605 | if (hook !== undefined) {
|
606 | return hook.call(expr, param);
|
607 | }
|
608 | });
|
609 | this.hooks.evaluateCallExpressionMember
|
610 | .for("replace")
|
611 | .tap("Parser", (expr, param) => {
|
612 | if (!param.isString()) return;
|
613 | if (expr.arguments.length !== 2) return;
|
614 | let arg1 = this.evaluateExpression(expr.arguments[0]);
|
615 | let arg2 = this.evaluateExpression(expr.arguments[1]);
|
616 | if (!arg1.isString() && !arg1.isRegExp()) return;
|
617 | arg1 = arg1.regExp || arg1.string;
|
618 | if (!arg2.isString()) return;
|
619 | arg2 = arg2.string;
|
620 | return new BasicEvaluatedExpression()
|
621 | .setString(param.string.replace(arg1, arg2))
|
622 | .setRange(expr.range);
|
623 | });
|
624 | ["substr", "substring"].forEach(fn => {
|
625 | this.hooks.evaluateCallExpressionMember
|
626 | .for(fn)
|
627 | .tap("Parser", (expr, param) => {
|
628 | if (!param.isString()) return;
|
629 | let arg1;
|
630 | let result,
|
631 | str = param.string;
|
632 | switch (expr.arguments.length) {
|
633 | case 1:
|
634 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
635 | if (!arg1.isNumber()) return;
|
636 | result = str[fn](arg1.number);
|
637 | break;
|
638 | case 2: {
|
639 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
640 | const arg2 = this.evaluateExpression(expr.arguments[1]);
|
641 | if (!arg1.isNumber()) return;
|
642 | if (!arg2.isNumber()) return;
|
643 | result = str[fn](arg1.number, arg2.number);
|
644 | break;
|
645 | }
|
646 | default:
|
647 | return;
|
648 | }
|
649 | return new BasicEvaluatedExpression()
|
650 | .setString(result)
|
651 | .setRange(expr.range);
|
652 | });
|
653 | });
|
654 |
|
655 | |
656 |
|
657 |
|
658 |
|
659 |
|
660 | const getSimplifiedTemplateResult = (kind, templateLiteralExpr) => {
|
661 | const quasis = [];
|
662 | const parts = [];
|
663 |
|
664 | for (let i = 0; i < templateLiteralExpr.quasis.length; i++) {
|
665 | const quasiExpr = templateLiteralExpr.quasis[i];
|
666 | const quasi = quasiExpr.value[kind];
|
667 |
|
668 | if (i > 0) {
|
669 | const prevExpr = parts[parts.length - 1];
|
670 | const expr = this.evaluateExpression(
|
671 | templateLiteralExpr.expressions[i - 1]
|
672 | );
|
673 | const exprAsString = expr.asString();
|
674 | if (typeof exprAsString === "string") {
|
675 |
|
676 |
|
677 |
|
678 | prevExpr.setString(prevExpr.string + exprAsString + quasi);
|
679 | prevExpr.setRange([prevExpr.range[0], quasiExpr.range[1]]);
|
680 |
|
681 | prevExpr.setExpression(undefined);
|
682 | continue;
|
683 | }
|
684 | parts.push(expr);
|
685 | }
|
686 |
|
687 | const part = new BasicEvaluatedExpression()
|
688 | .setString(quasi)
|
689 | .setRange(quasiExpr.range)
|
690 | .setExpression(quasiExpr);
|
691 | quasis.push(part);
|
692 | parts.push(part);
|
693 | }
|
694 | return {
|
695 | quasis,
|
696 | parts
|
697 | };
|
698 | };
|
699 |
|
700 | this.hooks.evaluate.for("TemplateLiteral").tap("Parser", node => {
|
701 | const { quasis, parts } = getSimplifiedTemplateResult("cooked", node);
|
702 | if (parts.length === 1) {
|
703 | return parts[0].setRange(node.range);
|
704 | }
|
705 | return new BasicEvaluatedExpression()
|
706 | .setTemplateString(quasis, parts, "cooked")
|
707 | .setRange(node.range);
|
708 | });
|
709 | this.hooks.evaluate.for("TaggedTemplateExpression").tap("Parser", node => {
|
710 | if (this.evaluateExpression(node.tag).identifier !== "String.raw") return;
|
711 | const { quasis, parts } = getSimplifiedTemplateResult("raw", node.quasi);
|
712 | if (parts.length === 1) {
|
713 | return parts[0].setRange(node.range);
|
714 | }
|
715 | return new BasicEvaluatedExpression()
|
716 | .setTemplateString(quasis, parts, "raw")
|
717 | .setRange(node.range);
|
718 | });
|
719 |
|
720 | this.hooks.evaluateCallExpressionMember
|
721 | .for("concat")
|
722 | .tap("Parser", (expr, param) => {
|
723 | if (!param.isString() && !param.isWrapped()) return;
|
724 |
|
725 | let stringSuffix = null;
|
726 | let hasUnknownParams = false;
|
727 | for (let i = expr.arguments.length - 1; i >= 0; i--) {
|
728 | const argExpr = this.evaluateExpression(expr.arguments[i]);
|
729 | if (!argExpr.isString() && !argExpr.isNumber()) {
|
730 | hasUnknownParams = true;
|
731 | break;
|
732 | }
|
733 |
|
734 | const value = argExpr.isString()
|
735 | ? argExpr.string
|
736 | : "" + argExpr.number;
|
737 |
|
738 | const newString = value + (stringSuffix ? stringSuffix.string : "");
|
739 | const newRange = [
|
740 | argExpr.range[0],
|
741 | (stringSuffix || argExpr).range[1]
|
742 | ];
|
743 | stringSuffix = new BasicEvaluatedExpression()
|
744 | .setString(newString)
|
745 | .setRange(newRange);
|
746 | }
|
747 |
|
748 | if (hasUnknownParams) {
|
749 | const prefix = param.isString() ? param : param.prefix;
|
750 | return new BasicEvaluatedExpression()
|
751 | .setWrapped(prefix, stringSuffix)
|
752 | .setRange(expr.range);
|
753 | } else if (param.isWrapped()) {
|
754 | const postfix = stringSuffix || param.postfix;
|
755 | return new BasicEvaluatedExpression()
|
756 | .setWrapped(param.prefix, postfix)
|
757 | .setRange(expr.range);
|
758 | } else {
|
759 | const newString =
|
760 | param.string + (stringSuffix ? stringSuffix.string : "");
|
761 | return new BasicEvaluatedExpression()
|
762 | .setString(newString)
|
763 | .setRange(expr.range);
|
764 | }
|
765 | });
|
766 | this.hooks.evaluateCallExpressionMember
|
767 | .for("split")
|
768 | .tap("Parser", (expr, param) => {
|
769 | if (!param.isString()) return;
|
770 | if (expr.arguments.length !== 1) return;
|
771 | let result;
|
772 | const arg = this.evaluateExpression(expr.arguments[0]);
|
773 | if (arg.isString()) {
|
774 | result = param.string.split(arg.string);
|
775 | } else if (arg.isRegExp()) {
|
776 | result = param.string.split(arg.regExp);
|
777 | } else {
|
778 | return;
|
779 | }
|
780 | return new BasicEvaluatedExpression()
|
781 | .setArray(result)
|
782 | .setRange(expr.range);
|
783 | });
|
784 | this.hooks.evaluate.for("ConditionalExpression").tap("Parser", expr => {
|
785 | const condition = this.evaluateExpression(expr.test);
|
786 | const conditionValue = condition.asBool();
|
787 | let res;
|
788 | if (conditionValue === undefined) {
|
789 | const consequent = this.evaluateExpression(expr.consequent);
|
790 | const alternate = this.evaluateExpression(expr.alternate);
|
791 | if (!consequent || !alternate) return;
|
792 | res = new BasicEvaluatedExpression();
|
793 | if (consequent.isConditional()) {
|
794 | res.setOptions(consequent.options);
|
795 | } else {
|
796 | res.setOptions([consequent]);
|
797 | }
|
798 | if (alternate.isConditional()) {
|
799 | res.addOptions(alternate.options);
|
800 | } else {
|
801 | res.addOptions([alternate]);
|
802 | }
|
803 | } else {
|
804 | res = this.evaluateExpression(
|
805 | conditionValue ? expr.consequent : expr.alternate
|
806 | );
|
807 | }
|
808 | res.setRange(expr.range);
|
809 | return res;
|
810 | });
|
811 | this.hooks.evaluate.for("ArrayExpression").tap("Parser", expr => {
|
812 | const items = expr.elements.map(element => {
|
813 | return element !== null && this.evaluateExpression(element);
|
814 | });
|
815 | if (!items.every(Boolean)) return;
|
816 | return new BasicEvaluatedExpression()
|
817 | .setItems(items)
|
818 | .setRange(expr.range);
|
819 | });
|
820 | }
|
821 |
|
822 | getRenameIdentifier(expr) {
|
823 | const result = this.evaluateExpression(expr);
|
824 | if (result && result.isIdentifier()) {
|
825 | return result.identifier;
|
826 | }
|
827 | }
|
828 |
|
829 | walkClass(classy) {
|
830 | if (classy.superClass) this.walkExpression(classy.superClass);
|
831 | if (classy.body && classy.body.type === "ClassBody") {
|
832 | const wasTopLevel = this.scope.topLevelScope;
|
833 | this.scope.topLevelScope = false;
|
834 | for (const methodDefinition of classy.body.body) {
|
835 | if (methodDefinition.type === "MethodDefinition") {
|
836 | this.walkMethodDefinition(methodDefinition);
|
837 | }
|
838 | }
|
839 | this.scope.topLevelScope = wasTopLevel;
|
840 | }
|
841 | }
|
842 |
|
843 | walkMethodDefinition(methodDefinition) {
|
844 | if (methodDefinition.computed && methodDefinition.key) {
|
845 | this.walkExpression(methodDefinition.key);
|
846 | }
|
847 | if (methodDefinition.value) {
|
848 | this.walkExpression(methodDefinition.value);
|
849 | }
|
850 | }
|
851 |
|
852 |
|
853 | prewalkStatements(statements) {
|
854 | for (let index = 0, len = statements.length; index < len; index++) {
|
855 | const statement = statements[index];
|
856 | this.prewalkStatement(statement);
|
857 | }
|
858 | }
|
859 |
|
860 |
|
861 | walkStatements(statements) {
|
862 | for (let index = 0, len = statements.length; index < len; index++) {
|
863 | const statement = statements[index];
|
864 | this.walkStatement(statement);
|
865 | }
|
866 | }
|
867 |
|
868 | prewalkStatement(statement) {
|
869 | switch (statement.type) {
|
870 | case "BlockStatement":
|
871 | this.prewalkBlockStatement(statement);
|
872 | break;
|
873 | case "ClassDeclaration":
|
874 | this.prewalkClassDeclaration(statement);
|
875 | break;
|
876 | case "DoWhileStatement":
|
877 | this.prewalkDoWhileStatement(statement);
|
878 | break;
|
879 | case "ExportAllDeclaration":
|
880 | this.prewalkExportAllDeclaration(statement);
|
881 | break;
|
882 | case "ExportDefaultDeclaration":
|
883 | this.prewalkExportDefaultDeclaration(statement);
|
884 | break;
|
885 | case "ExportNamedDeclaration":
|
886 | this.prewalkExportNamedDeclaration(statement);
|
887 | break;
|
888 | case "ForInStatement":
|
889 | this.prewalkForInStatement(statement);
|
890 | break;
|
891 | case "ForOfStatement":
|
892 | this.prewalkForOfStatement(statement);
|
893 | break;
|
894 | case "ForStatement":
|
895 | this.prewalkForStatement(statement);
|
896 | break;
|
897 | case "FunctionDeclaration":
|
898 | this.prewalkFunctionDeclaration(statement);
|
899 | break;
|
900 | case "IfStatement":
|
901 | this.prewalkIfStatement(statement);
|
902 | break;
|
903 | case "ImportDeclaration":
|
904 | this.prewalkImportDeclaration(statement);
|
905 | break;
|
906 | case "LabeledStatement":
|
907 | this.prewalkLabeledStatement(statement);
|
908 | break;
|
909 | case "SwitchStatement":
|
910 | this.prewalkSwitchStatement(statement);
|
911 | break;
|
912 | case "TryStatement":
|
913 | this.prewalkTryStatement(statement);
|
914 | break;
|
915 | case "VariableDeclaration":
|
916 | this.prewalkVariableDeclaration(statement);
|
917 | break;
|
918 | case "WhileStatement":
|
919 | this.prewalkWhileStatement(statement);
|
920 | break;
|
921 | case "WithStatement":
|
922 | this.prewalkWithStatement(statement);
|
923 | break;
|
924 | }
|
925 | }
|
926 |
|
927 | walkStatement(statement) {
|
928 | if (this.hooks.statement.call(statement) !== undefined) return;
|
929 | switch (statement.type) {
|
930 | case "BlockStatement":
|
931 | this.walkBlockStatement(statement);
|
932 | break;
|
933 | case "ClassDeclaration":
|
934 | this.walkClassDeclaration(statement);
|
935 | break;
|
936 | case "DoWhileStatement":
|
937 | this.walkDoWhileStatement(statement);
|
938 | break;
|
939 | case "ExportDefaultDeclaration":
|
940 | this.walkExportDefaultDeclaration(statement);
|
941 | break;
|
942 | case "ExportNamedDeclaration":
|
943 | this.walkExportNamedDeclaration(statement);
|
944 | break;
|
945 | case "ExpressionStatement":
|
946 | this.walkExpressionStatement(statement);
|
947 | break;
|
948 | case "ForInStatement":
|
949 | this.walkForInStatement(statement);
|
950 | break;
|
951 | case "ForOfStatement":
|
952 | this.walkForOfStatement(statement);
|
953 | break;
|
954 | case "ForStatement":
|
955 | this.walkForStatement(statement);
|
956 | break;
|
957 | case "FunctionDeclaration":
|
958 | this.walkFunctionDeclaration(statement);
|
959 | break;
|
960 | case "IfStatement":
|
961 | this.walkIfStatement(statement);
|
962 | break;
|
963 | case "LabeledStatement":
|
964 | this.walkLabeledStatement(statement);
|
965 | break;
|
966 | case "ReturnStatement":
|
967 | this.walkReturnStatement(statement);
|
968 | break;
|
969 | case "SwitchStatement":
|
970 | this.walkSwitchStatement(statement);
|
971 | break;
|
972 | case "ThrowStatement":
|
973 | this.walkThrowStatement(statement);
|
974 | break;
|
975 | case "TryStatement":
|
976 | this.walkTryStatement(statement);
|
977 | break;
|
978 | case "VariableDeclaration":
|
979 | this.walkVariableDeclaration(statement);
|
980 | break;
|
981 | case "WhileStatement":
|
982 | this.walkWhileStatement(statement);
|
983 | break;
|
984 | case "WithStatement":
|
985 | this.walkWithStatement(statement);
|
986 | break;
|
987 | }
|
988 | }
|
989 |
|
990 |
|
991 | prewalkBlockStatement(statement) {
|
992 | this.prewalkStatements(statement.body);
|
993 | }
|
994 |
|
995 | walkBlockStatement(statement) {
|
996 | this.walkStatements(statement.body);
|
997 | }
|
998 |
|
999 | walkExpressionStatement(statement) {
|
1000 | this.walkExpression(statement.expression);
|
1001 | }
|
1002 |
|
1003 | prewalkIfStatement(statement) {
|
1004 | this.prewalkStatement(statement.consequent);
|
1005 | if (statement.alternate) {
|
1006 | this.prewalkStatement(statement.alternate);
|
1007 | }
|
1008 | }
|
1009 |
|
1010 | walkIfStatement(statement) {
|
1011 | const result = this.hooks.statementIf.call(statement);
|
1012 | if (result === undefined) {
|
1013 | this.walkExpression(statement.test);
|
1014 | this.walkStatement(statement.consequent);
|
1015 | if (statement.alternate) {
|
1016 | this.walkStatement(statement.alternate);
|
1017 | }
|
1018 | } else {
|
1019 | if (result) {
|
1020 | this.walkStatement(statement.consequent);
|
1021 | } else if (statement.alternate) {
|
1022 | this.walkStatement(statement.alternate);
|
1023 | }
|
1024 | }
|
1025 | }
|
1026 |
|
1027 | prewalkLabeledStatement(statement) {
|
1028 | this.prewalkStatement(statement.body);
|
1029 | }
|
1030 |
|
1031 | walkLabeledStatement(statement) {
|
1032 | const hook = this.hooks.label.get(statement.label.name);
|
1033 | if (hook !== undefined) {
|
1034 | const result = hook.call(statement);
|
1035 | if (result === true) return;
|
1036 | }
|
1037 | this.walkStatement(statement.body);
|
1038 | }
|
1039 |
|
1040 | prewalkWithStatement(statement) {
|
1041 | this.prewalkStatement(statement.body);
|
1042 | }
|
1043 |
|
1044 | walkWithStatement(statement) {
|
1045 | this.walkExpression(statement.object);
|
1046 | this.walkStatement(statement.body);
|
1047 | }
|
1048 |
|
1049 | prewalkSwitchStatement(statement) {
|
1050 | this.prewalkSwitchCases(statement.cases);
|
1051 | }
|
1052 |
|
1053 | walkSwitchStatement(statement) {
|
1054 | this.walkExpression(statement.discriminant);
|
1055 | this.walkSwitchCases(statement.cases);
|
1056 | }
|
1057 |
|
1058 | walkTerminatingStatement(statement) {
|
1059 | if (statement.argument) this.walkExpression(statement.argument);
|
1060 | }
|
1061 |
|
1062 | walkReturnStatement(statement) {
|
1063 | this.walkTerminatingStatement(statement);
|
1064 | }
|
1065 |
|
1066 | walkThrowStatement(statement) {
|
1067 | this.walkTerminatingStatement(statement);
|
1068 | }
|
1069 |
|
1070 | prewalkTryStatement(statement) {
|
1071 | this.prewalkStatement(statement.block);
|
1072 | }
|
1073 |
|
1074 | walkTryStatement(statement) {
|
1075 | if (this.scope.inTry) {
|
1076 | this.walkStatement(statement.block);
|
1077 | } else {
|
1078 | this.scope.inTry = true;
|
1079 | this.walkStatement(statement.block);
|
1080 | this.scope.inTry = false;
|
1081 | }
|
1082 | if (statement.handler) this.walkCatchClause(statement.handler);
|
1083 | if (statement.finalizer) this.walkStatement(statement.finalizer);
|
1084 | }
|
1085 |
|
1086 | prewalkWhileStatement(statement) {
|
1087 | this.prewalkStatement(statement.body);
|
1088 | }
|
1089 |
|
1090 | walkWhileStatement(statement) {
|
1091 | this.walkExpression(statement.test);
|
1092 | this.walkStatement(statement.body);
|
1093 | }
|
1094 |
|
1095 | prewalkDoWhileStatement(statement) {
|
1096 | this.prewalkStatement(statement.body);
|
1097 | }
|
1098 |
|
1099 | walkDoWhileStatement(statement) {
|
1100 | this.walkStatement(statement.body);
|
1101 | this.walkExpression(statement.test);
|
1102 | }
|
1103 |
|
1104 | prewalkForStatement(statement) {
|
1105 | if (statement.init) {
|
1106 | if (statement.init.type === "VariableDeclaration") {
|
1107 | this.prewalkStatement(statement.init);
|
1108 | }
|
1109 | }
|
1110 | this.prewalkStatement(statement.body);
|
1111 | }
|
1112 |
|
1113 | walkForStatement(statement) {
|
1114 | if (statement.init) {
|
1115 | if (statement.init.type === "VariableDeclaration") {
|
1116 | this.walkStatement(statement.init);
|
1117 | } else {
|
1118 | this.walkExpression(statement.init);
|
1119 | }
|
1120 | }
|
1121 | if (statement.test) {
|
1122 | this.walkExpression(statement.test);
|
1123 | }
|
1124 | if (statement.update) {
|
1125 | this.walkExpression(statement.update);
|
1126 | }
|
1127 | this.walkStatement(statement.body);
|
1128 | }
|
1129 |
|
1130 | prewalkForInStatement(statement) {
|
1131 | if (statement.left.type === "VariableDeclaration") {
|
1132 | this.prewalkVariableDeclaration(statement.left);
|
1133 | }
|
1134 | this.prewalkStatement(statement.body);
|
1135 | }
|
1136 |
|
1137 | walkForInStatement(statement) {
|
1138 | if (statement.left.type === "VariableDeclaration") {
|
1139 | this.walkVariableDeclaration(statement.left);
|
1140 | } else {
|
1141 | this.walkPattern(statement.left);
|
1142 | }
|
1143 | this.walkExpression(statement.right);
|
1144 | this.walkStatement(statement.body);
|
1145 | }
|
1146 |
|
1147 | prewalkForOfStatement(statement) {
|
1148 | if (statement.left.type === "VariableDeclaration") {
|
1149 | this.prewalkVariableDeclaration(statement.left);
|
1150 | }
|
1151 | this.prewalkStatement(statement.body);
|
1152 | }
|
1153 |
|
1154 | walkForOfStatement(statement) {
|
1155 | if (statement.left.type === "VariableDeclaration") {
|
1156 | this.walkVariableDeclaration(statement.left);
|
1157 | } else {
|
1158 | this.walkPattern(statement.left);
|
1159 | }
|
1160 | this.walkExpression(statement.right);
|
1161 | this.walkStatement(statement.body);
|
1162 | }
|
1163 |
|
1164 |
|
1165 | prewalkFunctionDeclaration(statement) {
|
1166 | if (statement.id) {
|
1167 | this.scope.renames.set(statement.id.name, null);
|
1168 | this.scope.definitions.add(statement.id.name);
|
1169 | }
|
1170 | }
|
1171 |
|
1172 | walkFunctionDeclaration(statement) {
|
1173 | const wasTopLevel = this.scope.topLevelScope;
|
1174 | this.scope.topLevelScope = false;
|
1175 | this.inScope(statement.params, () => {
|
1176 | for (const param of statement.params) {
|
1177 | this.walkPattern(param);
|
1178 | }
|
1179 | if (statement.body.type === "BlockStatement") {
|
1180 | this.detectStrictMode(statement.body.body);
|
1181 | this.prewalkStatement(statement.body);
|
1182 | this.walkStatement(statement.body);
|
1183 | } else {
|
1184 | this.walkExpression(statement.body);
|
1185 | }
|
1186 | });
|
1187 | this.scope.topLevelScope = wasTopLevel;
|
1188 | }
|
1189 |
|
1190 | prewalkImportDeclaration(statement) {
|
1191 | const source = statement.source.value;
|
1192 | this.hooks.import.call(statement, source);
|
1193 | for (const specifier of statement.specifiers) {
|
1194 | const name = specifier.local.name;
|
1195 | this.scope.renames.set(name, null);
|
1196 | this.scope.definitions.add(name);
|
1197 | switch (specifier.type) {
|
1198 | case "ImportDefaultSpecifier":
|
1199 | this.hooks.importSpecifier.call(statement, source, "default", name);
|
1200 | break;
|
1201 | case "ImportSpecifier":
|
1202 | this.hooks.importSpecifier.call(
|
1203 | statement,
|
1204 | source,
|
1205 | specifier.imported.name,
|
1206 | name
|
1207 | );
|
1208 | break;
|
1209 | case "ImportNamespaceSpecifier":
|
1210 | this.hooks.importSpecifier.call(statement, source, null, name);
|
1211 | break;
|
1212 | }
|
1213 | }
|
1214 | }
|
1215 |
|
1216 | prewalkExportNamedDeclaration(statement) {
|
1217 | let source;
|
1218 | if (statement.source) {
|
1219 | source = statement.source.value;
|
1220 | this.hooks.exportImport.call(statement, source);
|
1221 | } else {
|
1222 | this.hooks.export.call(statement);
|
1223 | }
|
1224 | if (statement.declaration) {
|
1225 | if (
|
1226 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
1227 | ) {
|
1228 | const originalDefinitions = this.scope.definitions;
|
1229 | const tracker = new TrackingSet(this.scope.definitions);
|
1230 | this.scope.definitions = tracker;
|
1231 | this.prewalkStatement(statement.declaration);
|
1232 | const newDefs = Array.from(tracker.getAddedItems());
|
1233 | this.scope.definitions = originalDefinitions;
|
1234 | for (let index = newDefs.length - 1; index >= 0; index--) {
|
1235 | const def = newDefs[index];
|
1236 | this.hooks.exportSpecifier.call(statement, def, def, index);
|
1237 | }
|
1238 | }
|
1239 | }
|
1240 | if (statement.specifiers) {
|
1241 | for (
|
1242 | let specifierIndex = 0;
|
1243 | specifierIndex < statement.specifiers.length;
|
1244 | specifierIndex++
|
1245 | ) {
|
1246 | const specifier = statement.specifiers[specifierIndex];
|
1247 | switch (specifier.type) {
|
1248 | case "ExportSpecifier": {
|
1249 | const name = specifier.exported.name;
|
1250 | if (source) {
|
1251 | this.hooks.exportImportSpecifier.call(
|
1252 | statement,
|
1253 | source,
|
1254 | specifier.local.name,
|
1255 | name,
|
1256 | specifierIndex
|
1257 | );
|
1258 | } else {
|
1259 | this.hooks.exportSpecifier.call(
|
1260 | statement,
|
1261 | specifier.local.name,
|
1262 | name,
|
1263 | specifierIndex
|
1264 | );
|
1265 | }
|
1266 | break;
|
1267 | }
|
1268 | }
|
1269 | }
|
1270 | }
|
1271 | }
|
1272 |
|
1273 | walkExportNamedDeclaration(statement) {
|
1274 | if (statement.declaration) {
|
1275 | this.walkStatement(statement.declaration);
|
1276 | }
|
1277 | }
|
1278 |
|
1279 | prewalkExportDefaultDeclaration(statement) {
|
1280 | if (statement.declaration.id) {
|
1281 | const originalDefinitions = this.scope.definitions;
|
1282 | const tracker = new TrackingSet(this.scope.definitions);
|
1283 | this.scope.definitions = tracker;
|
1284 | this.prewalkStatement(statement.declaration);
|
1285 | const newDefs = Array.from(tracker.getAddedItems());
|
1286 | this.scope.definitions = originalDefinitions;
|
1287 | for (let index = 0, len = newDefs.length; index < len; index++) {
|
1288 | const def = newDefs[index];
|
1289 | this.hooks.exportSpecifier.call(statement, def, "default");
|
1290 | }
|
1291 | }
|
1292 | }
|
1293 |
|
1294 | walkExportDefaultDeclaration(statement) {
|
1295 | this.hooks.export.call(statement);
|
1296 | if (
|
1297 | statement.declaration.id &&
|
1298 | statement.declaration.type !== "FunctionExpression" &&
|
1299 | statement.declaration.type !== "ClassExpression"
|
1300 | ) {
|
1301 | if (
|
1302 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
1303 | ) {
|
1304 | this.walkStatement(statement.declaration);
|
1305 | }
|
1306 | } else {
|
1307 |
|
1308 |
|
1309 |
|
1310 | if (statement.declaration.type === "FunctionDeclaration") {
|
1311 | this.walkFunctionDeclaration(statement.declaration);
|
1312 | } else if (statement.declaration.type === "ClassDeclaration") {
|
1313 | this.walkClassDeclaration(statement.declaration);
|
1314 | } else {
|
1315 | this.walkExpression(statement.declaration);
|
1316 | }
|
1317 | if (!this.hooks.exportExpression.call(statement, statement.declaration)) {
|
1318 | this.hooks.exportSpecifier.call(
|
1319 | statement,
|
1320 | statement.declaration,
|
1321 | "default"
|
1322 | );
|
1323 | }
|
1324 | }
|
1325 | }
|
1326 |
|
1327 | prewalkExportAllDeclaration(statement) {
|
1328 | const source = statement.source.value;
|
1329 | this.hooks.exportImport.call(statement, source);
|
1330 | this.hooks.exportImportSpecifier.call(statement, source, null, null, 0);
|
1331 | }
|
1332 |
|
1333 | prewalkVariableDeclaration(statement) {
|
1334 | const hookMap =
|
1335 | statement.kind === "const"
|
1336 | ? this.hooks.varDeclarationConst
|
1337 | : statement.kind === "let"
|
1338 | ? this.hooks.varDeclarationLet
|
1339 | : this.hooks.varDeclarationVar;
|
1340 | for (const declarator of statement.declarations) {
|
1341 | switch (declarator.type) {
|
1342 | case "VariableDeclarator": {
|
1343 | this.enterPattern(declarator.id, (name, decl) => {
|
1344 | let hook = hookMap.get(name);
|
1345 | if (hook === undefined || !hook.call(decl)) {
|
1346 | hook = this.hooks.varDeclaration.get(name);
|
1347 | if (hook === undefined || !hook.call(decl)) {
|
1348 | this.scope.renames.set(name, null);
|
1349 | this.scope.definitions.add(name);
|
1350 | }
|
1351 | }
|
1352 | });
|
1353 | break;
|
1354 | }
|
1355 | }
|
1356 | }
|
1357 | }
|
1358 |
|
1359 | walkVariableDeclaration(statement) {
|
1360 | for (const declarator of statement.declarations) {
|
1361 | switch (declarator.type) {
|
1362 | case "VariableDeclarator": {
|
1363 | const renameIdentifier =
|
1364 | declarator.init && this.getRenameIdentifier(declarator.init);
|
1365 | if (renameIdentifier && declarator.id.type === "Identifier") {
|
1366 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1367 | if (hook !== undefined && hook.call(declarator.init)) {
|
1368 |
|
1369 | const hook = this.hooks.rename.get(renameIdentifier);
|
1370 | if (hook === undefined || !hook.call(declarator.init)) {
|
1371 | this.scope.renames.set(
|
1372 | declarator.id.name,
|
1373 | this.scope.renames.get(renameIdentifier) || renameIdentifier
|
1374 | );
|
1375 | this.scope.definitions.delete(declarator.id.name);
|
1376 | }
|
1377 | break;
|
1378 | }
|
1379 | }
|
1380 | this.walkPattern(declarator.id);
|
1381 | if (declarator.init) this.walkExpression(declarator.init);
|
1382 | break;
|
1383 | }
|
1384 | }
|
1385 | }
|
1386 | }
|
1387 |
|
1388 | prewalkClassDeclaration(statement) {
|
1389 | if (statement.id) {
|
1390 | this.scope.renames.set(statement.id.name, null);
|
1391 | this.scope.definitions.add(statement.id.name);
|
1392 | }
|
1393 | }
|
1394 |
|
1395 | walkClassDeclaration(statement) {
|
1396 | this.walkClass(statement);
|
1397 | }
|
1398 |
|
1399 | prewalkSwitchCases(switchCases) {
|
1400 | for (let index = 0, len = switchCases.length; index < len; index++) {
|
1401 | const switchCase = switchCases[index];
|
1402 | this.prewalkStatements(switchCase.consequent);
|
1403 | }
|
1404 | }
|
1405 |
|
1406 | walkSwitchCases(switchCases) {
|
1407 | for (let index = 0, len = switchCases.length; index < len; index++) {
|
1408 | const switchCase = switchCases[index];
|
1409 |
|
1410 | if (switchCase.test) {
|
1411 | this.walkExpression(switchCase.test);
|
1412 | }
|
1413 | this.walkStatements(switchCase.consequent);
|
1414 | }
|
1415 | }
|
1416 |
|
1417 | walkCatchClause(catchClause) {
|
1418 |
|
1419 | const errorBinding =
|
1420 | catchClause.param === null ? EMPTY_ARRAY : [catchClause.param];
|
1421 |
|
1422 | this.inScope(errorBinding, () => {
|
1423 | this.prewalkStatement(catchClause.body);
|
1424 | this.walkStatement(catchClause.body);
|
1425 | });
|
1426 | }
|
1427 |
|
1428 | walkPattern(pattern) {
|
1429 | switch (pattern.type) {
|
1430 | case "ArrayPattern":
|
1431 | this.walkArrayPattern(pattern);
|
1432 | break;
|
1433 | case "AssignmentPattern":
|
1434 | this.walkAssignmentPattern(pattern);
|
1435 | break;
|
1436 | case "MemberExpression":
|
1437 | this.walkMemberExpression(pattern);
|
1438 | break;
|
1439 | case "ObjectPattern":
|
1440 | this.walkObjectPattern(pattern);
|
1441 | break;
|
1442 | case "RestElement":
|
1443 | this.walkRestElement(pattern);
|
1444 | break;
|
1445 | }
|
1446 | }
|
1447 |
|
1448 | walkAssignmentPattern(pattern) {
|
1449 | this.walkExpression(pattern.right);
|
1450 | this.walkPattern(pattern.left);
|
1451 | }
|
1452 |
|
1453 | walkObjectPattern(pattern) {
|
1454 | for (let i = 0, len = pattern.properties.length; i < len; i++) {
|
1455 | const prop = pattern.properties[i];
|
1456 | if (prop) {
|
1457 | if (prop.computed) this.walkExpression(prop.key);
|
1458 | if (prop.value) this.walkPattern(prop.value);
|
1459 | }
|
1460 | }
|
1461 | }
|
1462 |
|
1463 | walkArrayPattern(pattern) {
|
1464 | for (let i = 0, len = pattern.elements.length; i < len; i++) {
|
1465 | const element = pattern.elements[i];
|
1466 | if (element) this.walkPattern(element);
|
1467 | }
|
1468 | }
|
1469 |
|
1470 | walkRestElement(pattern) {
|
1471 | this.walkPattern(pattern.argument);
|
1472 | }
|
1473 |
|
1474 | walkExpressions(expressions) {
|
1475 | for (const expression of expressions) {
|
1476 | if (expression) {
|
1477 | this.walkExpression(expression);
|
1478 | }
|
1479 | }
|
1480 | }
|
1481 |
|
1482 | walkExpression(expression) {
|
1483 | switch (expression.type) {
|
1484 | case "ArrayExpression":
|
1485 | this.walkArrayExpression(expression);
|
1486 | break;
|
1487 | case "ArrowFunctionExpression":
|
1488 | this.walkArrowFunctionExpression(expression);
|
1489 | break;
|
1490 | case "AssignmentExpression":
|
1491 | this.walkAssignmentExpression(expression);
|
1492 | break;
|
1493 | case "AwaitExpression":
|
1494 | this.walkAwaitExpression(expression);
|
1495 | break;
|
1496 | case "BinaryExpression":
|
1497 | this.walkBinaryExpression(expression);
|
1498 | break;
|
1499 | case "CallExpression":
|
1500 | this.walkCallExpression(expression);
|
1501 | break;
|
1502 | case "ClassExpression":
|
1503 | this.walkClassExpression(expression);
|
1504 | break;
|
1505 | case "ConditionalExpression":
|
1506 | this.walkConditionalExpression(expression);
|
1507 | break;
|
1508 | case "FunctionExpression":
|
1509 | this.walkFunctionExpression(expression);
|
1510 | break;
|
1511 | case "Identifier":
|
1512 | this.walkIdentifier(expression);
|
1513 | break;
|
1514 | case "LogicalExpression":
|
1515 | this.walkLogicalExpression(expression);
|
1516 | break;
|
1517 | case "MemberExpression":
|
1518 | this.walkMemberExpression(expression);
|
1519 | break;
|
1520 | case "NewExpression":
|
1521 | this.walkNewExpression(expression);
|
1522 | break;
|
1523 | case "ObjectExpression":
|
1524 | this.walkObjectExpression(expression);
|
1525 | break;
|
1526 | case "SequenceExpression":
|
1527 | this.walkSequenceExpression(expression);
|
1528 | break;
|
1529 | case "SpreadElement":
|
1530 | this.walkSpreadElement(expression);
|
1531 | break;
|
1532 | case "TaggedTemplateExpression":
|
1533 | this.walkTaggedTemplateExpression(expression);
|
1534 | break;
|
1535 | case "TemplateLiteral":
|
1536 | this.walkTemplateLiteral(expression);
|
1537 | break;
|
1538 | case "ThisExpression":
|
1539 | this.walkThisExpression(expression);
|
1540 | break;
|
1541 | case "UnaryExpression":
|
1542 | this.walkUnaryExpression(expression);
|
1543 | break;
|
1544 | case "UpdateExpression":
|
1545 | this.walkUpdateExpression(expression);
|
1546 | break;
|
1547 | case "YieldExpression":
|
1548 | this.walkYieldExpression(expression);
|
1549 | break;
|
1550 | }
|
1551 | }
|
1552 |
|
1553 | walkAwaitExpression(expression) {
|
1554 | this.walkExpression(expression.argument);
|
1555 | }
|
1556 |
|
1557 | walkArrayExpression(expression) {
|
1558 | if (expression.elements) {
|
1559 | this.walkExpressions(expression.elements);
|
1560 | }
|
1561 | }
|
1562 |
|
1563 | walkSpreadElement(expression) {
|
1564 | if (expression.argument) {
|
1565 | this.walkExpression(expression.argument);
|
1566 | }
|
1567 | }
|
1568 |
|
1569 | walkObjectExpression(expression) {
|
1570 | for (
|
1571 | let propIndex = 0, len = expression.properties.length;
|
1572 | propIndex < len;
|
1573 | propIndex++
|
1574 | ) {
|
1575 | const prop = expression.properties[propIndex];
|
1576 | if (prop.type === "SpreadElement") {
|
1577 | this.walkExpression(prop.argument);
|
1578 | continue;
|
1579 | }
|
1580 | if (prop.computed) {
|
1581 | this.walkExpression(prop.key);
|
1582 | }
|
1583 | if (prop.shorthand) {
|
1584 | this.scope.inShorthand = true;
|
1585 | }
|
1586 | this.walkExpression(prop.value);
|
1587 | if (prop.shorthand) {
|
1588 | this.scope.inShorthand = false;
|
1589 | }
|
1590 | }
|
1591 | }
|
1592 |
|
1593 | walkFunctionExpression(expression) {
|
1594 | const wasTopLevel = this.scope.topLevelScope;
|
1595 | this.scope.topLevelScope = false;
|
1596 | this.inScope(expression.params, () => {
|
1597 | for (const param of expression.params) {
|
1598 | this.walkPattern(param);
|
1599 | }
|
1600 | if (expression.body.type === "BlockStatement") {
|
1601 | this.detectStrictMode(expression.body.body);
|
1602 | this.prewalkStatement(expression.body);
|
1603 | this.walkStatement(expression.body);
|
1604 | } else {
|
1605 | this.walkExpression(expression.body);
|
1606 | }
|
1607 | });
|
1608 | this.scope.topLevelScope = wasTopLevel;
|
1609 | }
|
1610 |
|
1611 | walkArrowFunctionExpression(expression) {
|
1612 | this.inScope(expression.params, () => {
|
1613 | for (const param of expression.params) {
|
1614 | this.walkPattern(param);
|
1615 | }
|
1616 | if (expression.body.type === "BlockStatement") {
|
1617 | this.detectStrictMode(expression.body.body);
|
1618 | this.prewalkStatement(expression.body);
|
1619 | this.walkStatement(expression.body);
|
1620 | } else {
|
1621 | this.walkExpression(expression.body);
|
1622 | }
|
1623 | });
|
1624 | }
|
1625 |
|
1626 | walkSequenceExpression(expression) {
|
1627 | if (expression.expressions) this.walkExpressions(expression.expressions);
|
1628 | }
|
1629 |
|
1630 | walkUpdateExpression(expression) {
|
1631 | this.walkExpression(expression.argument);
|
1632 | }
|
1633 |
|
1634 | walkUnaryExpression(expression) {
|
1635 | if (expression.operator === "typeof") {
|
1636 | const exprName = this.getNameForExpression(expression.argument);
|
1637 | if (exprName && exprName.free) {
|
1638 | const hook = this.hooks.typeof.get(exprName.name);
|
1639 | if (hook !== undefined) {
|
1640 | const result = hook.call(expression);
|
1641 | if (result === true) return;
|
1642 | }
|
1643 | }
|
1644 | }
|
1645 | this.walkExpression(expression.argument);
|
1646 | }
|
1647 |
|
1648 | walkLeftRightExpression(expression) {
|
1649 | this.walkExpression(expression.left);
|
1650 | this.walkExpression(expression.right);
|
1651 | }
|
1652 |
|
1653 | walkBinaryExpression(expression) {
|
1654 | this.walkLeftRightExpression(expression);
|
1655 | }
|
1656 |
|
1657 | walkLogicalExpression(expression) {
|
1658 | const result = this.hooks.expressionLogicalOperator.call(expression);
|
1659 | if (result === undefined) {
|
1660 | this.walkLeftRightExpression(expression);
|
1661 | } else {
|
1662 | if (result) {
|
1663 | this.walkExpression(expression.right);
|
1664 | }
|
1665 | }
|
1666 | }
|
1667 |
|
1668 | walkAssignmentExpression(expression) {
|
1669 | const renameIdentifier = this.getRenameIdentifier(expression.right);
|
1670 | if (expression.left.type === "Identifier" && renameIdentifier) {
|
1671 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1672 | if (hook !== undefined && hook.call(expression.right)) {
|
1673 |
|
1674 | const hook = this.hooks.rename.get(renameIdentifier);
|
1675 | if (hook === undefined || !hook.call(expression.right)) {
|
1676 | this.scope.renames.set(expression.left.name, renameIdentifier);
|
1677 | this.scope.definitions.delete(expression.left.name);
|
1678 | }
|
1679 | return;
|
1680 | }
|
1681 | }
|
1682 | if (expression.left.type === "Identifier") {
|
1683 | const assignedHook = this.hooks.assigned.get(expression.left.name);
|
1684 | if (assignedHook === undefined || !assignedHook.call(expression)) {
|
1685 | this.walkExpression(expression.right);
|
1686 | }
|
1687 | this.scope.renames.set(expression.left.name, null);
|
1688 | const assignHook = this.hooks.assign.get(expression.left.name);
|
1689 | if (assignHook === undefined || !assignHook.call(expression)) {
|
1690 | this.walkExpression(expression.left);
|
1691 | }
|
1692 | return;
|
1693 | }
|
1694 | this.walkExpression(expression.right);
|
1695 | this.walkPattern(expression.left);
|
1696 | this.enterPattern(expression.left, (name, decl) => {
|
1697 | this.scope.renames.set(name, null);
|
1698 | });
|
1699 | }
|
1700 |
|
1701 | walkConditionalExpression(expression) {
|
1702 | const result = this.hooks.expressionConditionalOperator.call(expression);
|
1703 | if (result === undefined) {
|
1704 | this.walkExpression(expression.test);
|
1705 | this.walkExpression(expression.consequent);
|
1706 | if (expression.alternate) {
|
1707 | this.walkExpression(expression.alternate);
|
1708 | }
|
1709 | } else {
|
1710 | if (result) {
|
1711 | this.walkExpression(expression.consequent);
|
1712 | } else if (expression.alternate) {
|
1713 | this.walkExpression(expression.alternate);
|
1714 | }
|
1715 | }
|
1716 | }
|
1717 |
|
1718 | walkNewExpression(expression) {
|
1719 | const callee = this.evaluateExpression(expression.callee);
|
1720 | if (callee.isIdentifier()) {
|
1721 | const hook = this.hooks.new.get(callee.identifier);
|
1722 | if (hook !== undefined) {
|
1723 | const result = hook.call(expression);
|
1724 | if (result === true) {
|
1725 | return;
|
1726 | }
|
1727 | }
|
1728 | }
|
1729 |
|
1730 | this.walkExpression(expression.callee);
|
1731 | if (expression.arguments) {
|
1732 | this.walkExpressions(expression.arguments);
|
1733 | }
|
1734 | }
|
1735 |
|
1736 | walkYieldExpression(expression) {
|
1737 | if (expression.argument) {
|
1738 | this.walkExpression(expression.argument);
|
1739 | }
|
1740 | }
|
1741 |
|
1742 | walkTemplateLiteral(expression) {
|
1743 | if (expression.expressions) {
|
1744 | this.walkExpressions(expression.expressions);
|
1745 | }
|
1746 | }
|
1747 |
|
1748 | walkTaggedTemplateExpression(expression) {
|
1749 | if (expression.tag) {
|
1750 | this.walkExpression(expression.tag);
|
1751 | }
|
1752 | if (expression.quasi && expression.quasi.expressions) {
|
1753 | this.walkExpressions(expression.quasi.expressions);
|
1754 | }
|
1755 | }
|
1756 |
|
1757 | walkClassExpression(expression) {
|
1758 | this.walkClass(expression);
|
1759 | }
|
1760 |
|
1761 | _walkIIFE(functionExpression, options, currentThis) {
|
1762 | const renameArgOrThis = argOrThis => {
|
1763 | const renameIdentifier = this.getRenameIdentifier(argOrThis);
|
1764 | if (renameIdentifier) {
|
1765 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1766 | if (hook !== undefined && hook.call(argOrThis)) {
|
1767 | const hook = this.hooks.rename.get(renameIdentifier);
|
1768 | if (hook === undefined || !hook.call(argOrThis)) {
|
1769 | return renameIdentifier;
|
1770 | }
|
1771 | }
|
1772 | }
|
1773 | this.walkExpression(argOrThis);
|
1774 | };
|
1775 | const params = functionExpression.params;
|
1776 | const renameThis = currentThis ? renameArgOrThis(currentThis) : null;
|
1777 | const args = options.map(renameArgOrThis);
|
1778 | const wasTopLevel = this.scope.topLevelScope;
|
1779 | this.scope.topLevelScope = false;
|
1780 | this.inScope(params.filter((identifier, idx) => !args[idx]), () => {
|
1781 | if (renameThis) {
|
1782 | this.scope.renames.set("this", renameThis);
|
1783 | }
|
1784 | for (let i = 0; i < args.length; i++) {
|
1785 | const param = args[i];
|
1786 | if (!param) continue;
|
1787 | if (!params[i] || params[i].type !== "Identifier") continue;
|
1788 | this.scope.renames.set(params[i].name, param);
|
1789 | }
|
1790 | if (functionExpression.body.type === "BlockStatement") {
|
1791 | this.prewalkStatement(functionExpression.body);
|
1792 | this.walkStatement(functionExpression.body);
|
1793 | } else {
|
1794 | this.walkExpression(functionExpression.body);
|
1795 | }
|
1796 | });
|
1797 | this.scope.topLevelScope = wasTopLevel;
|
1798 | }
|
1799 |
|
1800 | walkCallExpression(expression) {
|
1801 | if (
|
1802 | expression.callee.type === "MemberExpression" &&
|
1803 | expression.callee.object.type === "FunctionExpression" &&
|
1804 | !expression.callee.computed &&
|
1805 | (expression.callee.property.name === "call" ||
|
1806 | expression.callee.property.name === "bind") &&
|
1807 | expression.arguments.length > 0
|
1808 | ) {
|
1809 |
|
1810 | this._walkIIFE(
|
1811 | expression.callee.object,
|
1812 | expression.arguments.slice(1),
|
1813 | expression.arguments[0]
|
1814 | );
|
1815 | } else if (expression.callee.type === "FunctionExpression") {
|
1816 |
|
1817 | this._walkIIFE(expression.callee, expression.arguments, null);
|
1818 | } else if (expression.callee.type === "Import") {
|
1819 | let result = this.hooks.importCall.call(expression);
|
1820 | if (result === true) return;
|
1821 |
|
1822 | if (expression.arguments) this.walkExpressions(expression.arguments);
|
1823 | } else {
|
1824 | const callee = this.evaluateExpression(expression.callee);
|
1825 | if (callee.isIdentifier()) {
|
1826 | const callHook = this.hooks.call.get(callee.identifier);
|
1827 | if (callHook !== undefined) {
|
1828 | let result = callHook.call(expression);
|
1829 | if (result === true) return;
|
1830 | }
|
1831 | let identifier = callee.identifier.replace(/\.[^.]+$/, "");
|
1832 | if (identifier !== callee.identifier) {
|
1833 | const callAnyHook = this.hooks.callAnyMember.get(identifier);
|
1834 | if (callAnyHook !== undefined) {
|
1835 | let result = callAnyHook.call(expression);
|
1836 | if (result === true) return;
|
1837 | }
|
1838 | }
|
1839 | }
|
1840 |
|
1841 | if (expression.callee) this.walkExpression(expression.callee);
|
1842 | if (expression.arguments) this.walkExpressions(expression.arguments);
|
1843 | }
|
1844 | }
|
1845 |
|
1846 | walkMemberExpression(expression) {
|
1847 | const exprName = this.getNameForExpression(expression);
|
1848 | if (exprName && exprName.free) {
|
1849 | const expressionHook = this.hooks.expression.get(exprName.name);
|
1850 | if (expressionHook !== undefined) {
|
1851 | const result = expressionHook.call(expression);
|
1852 | if (result === true) return;
|
1853 | }
|
1854 | const expressionAnyMemberHook = this.hooks.expressionAnyMember.get(
|
1855 | exprName.nameGeneral
|
1856 | );
|
1857 | if (expressionAnyMemberHook !== undefined) {
|
1858 | const result = expressionAnyMemberHook.call(expression);
|
1859 | if (result === true) return;
|
1860 | }
|
1861 | }
|
1862 | this.walkExpression(expression.object);
|
1863 | if (expression.computed === true) this.walkExpression(expression.property);
|
1864 | }
|
1865 |
|
1866 | walkThisExpression(expression) {
|
1867 | const expressionHook = this.hooks.expression.get("this");
|
1868 | if (expressionHook !== undefined) {
|
1869 | expressionHook.call(expression);
|
1870 | }
|
1871 | }
|
1872 |
|
1873 | walkIdentifier(expression) {
|
1874 | if (!this.scope.definitions.has(expression.name)) {
|
1875 | const hook = this.hooks.expression.get(
|
1876 | this.scope.renames.get(expression.name) || expression.name
|
1877 | );
|
1878 | if (hook !== undefined) {
|
1879 | const result = hook.call(expression);
|
1880 | if (result === true) return;
|
1881 | }
|
1882 | }
|
1883 | }
|
1884 |
|
1885 | inScope(params, fn) {
|
1886 | const oldScope = this.scope;
|
1887 | this.scope = {
|
1888 | topLevelScope: oldScope.topLevelScope,
|
1889 | inTry: false,
|
1890 | inShorthand: false,
|
1891 | isStrict: oldScope.isStrict,
|
1892 | definitions: oldScope.definitions.createChild(),
|
1893 | renames: oldScope.renames.createChild()
|
1894 | };
|
1895 |
|
1896 | this.scope.renames.set("this", null);
|
1897 |
|
1898 | for (const param of params) {
|
1899 | if (typeof param !== "string") {
|
1900 | this.enterPattern(param, param => {
|
1901 | this.scope.renames.set(param, null);
|
1902 | this.scope.definitions.add(param);
|
1903 | });
|
1904 | } else if (param) {
|
1905 | this.scope.renames.set(param, null);
|
1906 | this.scope.definitions.add(param);
|
1907 | }
|
1908 | }
|
1909 |
|
1910 | fn();
|
1911 | this.scope = oldScope;
|
1912 | }
|
1913 |
|
1914 | detectStrictMode(statements) {
|
1915 | const isStrict =
|
1916 | statements.length >= 1 &&
|
1917 | statements[0].type === "ExpressionStatement" &&
|
1918 | statements[0].expression.type === "Literal" &&
|
1919 | statements[0].expression.value === "use strict";
|
1920 | if (isStrict) {
|
1921 | this.scope.isStrict = true;
|
1922 | }
|
1923 | }
|
1924 |
|
1925 | enterPattern(pattern, onIdent) {
|
1926 | if (!pattern) return;
|
1927 | switch (pattern.type) {
|
1928 | case "ArrayPattern":
|
1929 | this.enterArrayPattern(pattern, onIdent);
|
1930 | break;
|
1931 | case "AssignmentPattern":
|
1932 | this.enterAssignmentPattern(pattern, onIdent);
|
1933 | break;
|
1934 | case "Identifier":
|
1935 | this.enterIdentifier(pattern, onIdent);
|
1936 | break;
|
1937 | case "ObjectPattern":
|
1938 | this.enterObjectPattern(pattern, onIdent);
|
1939 | break;
|
1940 | case "RestElement":
|
1941 | this.enterRestElement(pattern, onIdent);
|
1942 | break;
|
1943 | }
|
1944 | }
|
1945 |
|
1946 | enterIdentifier(pattern, onIdent) {
|
1947 | onIdent(pattern.name, pattern);
|
1948 | }
|
1949 |
|
1950 | enterObjectPattern(pattern, onIdent) {
|
1951 | for (
|
1952 | let propIndex = 0, len = pattern.properties.length;
|
1953 | propIndex < len;
|
1954 | propIndex++
|
1955 | ) {
|
1956 | const prop = pattern.properties[propIndex];
|
1957 | this.enterPattern(prop.value, onIdent);
|
1958 | }
|
1959 | }
|
1960 |
|
1961 | enterArrayPattern(pattern, onIdent) {
|
1962 | for (
|
1963 | let elementIndex = 0, len = pattern.elements.length;
|
1964 | elementIndex < len;
|
1965 | elementIndex++
|
1966 | ) {
|
1967 | const element = pattern.elements[elementIndex];
|
1968 | this.enterPattern(element, onIdent);
|
1969 | }
|
1970 | }
|
1971 |
|
1972 | enterRestElement(pattern, onIdent) {
|
1973 | this.enterPattern(pattern.argument, onIdent);
|
1974 | }
|
1975 |
|
1976 | enterAssignmentPattern(pattern, onIdent) {
|
1977 | this.enterPattern(pattern.left, onIdent);
|
1978 | }
|
1979 |
|
1980 | evaluateExpression(expression) {
|
1981 | try {
|
1982 | const hook = this.hooks.evaluate.get(expression.type);
|
1983 | if (hook !== undefined) {
|
1984 | const result = hook.call(expression);
|
1985 | if (result !== undefined) {
|
1986 | if (result) {
|
1987 | result.setExpression(expression);
|
1988 | }
|
1989 | return result;
|
1990 | }
|
1991 | }
|
1992 | } catch (e) {
|
1993 | console.warn(e);
|
1994 |
|
1995 | }
|
1996 | return new BasicEvaluatedExpression()
|
1997 | .setRange(expression.range)
|
1998 | .setExpression(expression);
|
1999 | }
|
2000 |
|
2001 | parseString(expression) {
|
2002 | switch (expression.type) {
|
2003 | case "BinaryExpression":
|
2004 | if (expression.operator === "+") {
|
2005 | return (
|
2006 | this.parseString(expression.left) +
|
2007 | this.parseString(expression.right)
|
2008 | );
|
2009 | }
|
2010 | break;
|
2011 | case "Literal":
|
2012 | return expression.value + "";
|
2013 | }
|
2014 | throw new Error(
|
2015 | expression.type + " is not supported as parameter for require"
|
2016 | );
|
2017 | }
|
2018 |
|
2019 | parseCalculatedString(expression) {
|
2020 | switch (expression.type) {
|
2021 | case "BinaryExpression":
|
2022 | if (expression.operator === "+") {
|
2023 | const left = this.parseCalculatedString(expression.left);
|
2024 | const right = this.parseCalculatedString(expression.right);
|
2025 | if (left.code) {
|
2026 | return {
|
2027 | range: left.range,
|
2028 | value: left.value,
|
2029 | code: true,
|
2030 | conditional: false
|
2031 | };
|
2032 | } else if (right.code) {
|
2033 | return {
|
2034 | range: [
|
2035 | left.range[0],
|
2036 | right.range ? right.range[1] : left.range[1]
|
2037 | ],
|
2038 | value: left.value + right.value,
|
2039 | code: true,
|
2040 | conditional: false
|
2041 | };
|
2042 | } else {
|
2043 | return {
|
2044 | range: [left.range[0], right.range[1]],
|
2045 | value: left.value + right.value,
|
2046 | code: false,
|
2047 | conditional: false
|
2048 | };
|
2049 | }
|
2050 | }
|
2051 | break;
|
2052 | case "ConditionalExpression": {
|
2053 | const consequent = this.parseCalculatedString(expression.consequent);
|
2054 | const alternate = this.parseCalculatedString(expression.alternate);
|
2055 | const items = [];
|
2056 | if (consequent.conditional) {
|
2057 | items.push(...consequent.conditional);
|
2058 | } else if (!consequent.code) {
|
2059 | items.push(consequent);
|
2060 | } else {
|
2061 | break;
|
2062 | }
|
2063 | if (alternate.conditional) {
|
2064 | items.push(...alternate.conditional);
|
2065 | } else if (!alternate.code) {
|
2066 | items.push(alternate);
|
2067 | } else {
|
2068 | break;
|
2069 | }
|
2070 | return {
|
2071 | range: undefined,
|
2072 | value: "",
|
2073 | code: true,
|
2074 | conditional: items
|
2075 | };
|
2076 | }
|
2077 | case "Literal":
|
2078 | return {
|
2079 | range: expression.range,
|
2080 | value: expression.value + "",
|
2081 | code: false,
|
2082 | conditional: false
|
2083 | };
|
2084 | }
|
2085 | return {
|
2086 | range: undefined,
|
2087 | value: "",
|
2088 | code: true,
|
2089 | conditional: false
|
2090 | };
|
2091 | }
|
2092 |
|
2093 | parse(source, initialState) {
|
2094 | let ast;
|
2095 | let comments;
|
2096 | if (typeof source === "object" && source !== null) {
|
2097 | ast = source;
|
2098 | comments = source.comments;
|
2099 | } else {
|
2100 | comments = [];
|
2101 | ast = Parser.parse(source, {
|
2102 | sourceType: this.sourceType,
|
2103 | onComment: comments
|
2104 | });
|
2105 | }
|
2106 |
|
2107 | const oldScope = this.scope;
|
2108 | const oldState = this.state;
|
2109 | const oldComments = this.comments;
|
2110 | this.scope = {
|
2111 | topLevelScope: true,
|
2112 | inTry: false,
|
2113 | inShorthand: false,
|
2114 | isStrict: false,
|
2115 | definitions: new StackedSetMap(),
|
2116 | renames: new StackedSetMap()
|
2117 | };
|
2118 | const state = (this.state = initialState || {});
|
2119 | this.comments = comments;
|
2120 | if (this.hooks.program.call(ast, comments) === undefined) {
|
2121 | this.detectStrictMode(ast.body);
|
2122 | this.prewalkStatements(ast.body);
|
2123 | this.walkStatements(ast.body);
|
2124 | }
|
2125 | this.scope = oldScope;
|
2126 | this.state = oldState;
|
2127 | this.comments = oldComments;
|
2128 | return state;
|
2129 | }
|
2130 |
|
2131 | evaluate(source) {
|
2132 | const ast = Parser.parse("(" + source + ")", {
|
2133 | sourceType: this.sourceType,
|
2134 | locations: false
|
2135 | });
|
2136 | if (ast.body.length !== 1 || ast.body[0].type !== "ExpressionStatement") {
|
2137 | throw new Error("evaluate: Source is not a expression");
|
2138 | }
|
2139 | return this.evaluateExpression(ast.body[0].expression);
|
2140 | }
|
2141 |
|
2142 | getComments(range) {
|
2143 | return this.comments.filter(
|
2144 | comment => comment.range[0] >= range[0] && comment.range[1] <= range[1]
|
2145 | );
|
2146 | }
|
2147 |
|
2148 | parseCommentOptions(range) {
|
2149 | const comments = this.getComments(range);
|
2150 | if (comments.length === 0) {
|
2151 | return EMPTY_COMMENT_OPTIONS;
|
2152 | }
|
2153 | let options = {};
|
2154 | let errors = [];
|
2155 | for (const comment of comments) {
|
2156 | const { value } = comment;
|
2157 | if (value && webpackCommentRegExp.test(value)) {
|
2158 |
|
2159 | try {
|
2160 | const val = vm.runInNewContext(`(function(){return {${value}};})()`);
|
2161 | Object.assign(options, val);
|
2162 | } catch (e) {
|
2163 | e.comment = comment;
|
2164 | errors.push(e);
|
2165 | }
|
2166 | }
|
2167 | }
|
2168 | return { options, errors };
|
2169 | }
|
2170 |
|
2171 | getNameForExpression(expression) {
|
2172 | let expr = expression;
|
2173 | const exprName = [];
|
2174 | while (
|
2175 | expr.type === "MemberExpression" &&
|
2176 | expr.property.type === (expr.computed ? "Literal" : "Identifier")
|
2177 | ) {
|
2178 | exprName.push(expr.computed ? expr.property.value : expr.property.name);
|
2179 | expr = expr.object;
|
2180 | }
|
2181 | let free;
|
2182 | if (expr.type === "Identifier") {
|
2183 | free = !this.scope.definitions.has(expr.name);
|
2184 | exprName.push(this.scope.renames.get(expr.name) || expr.name);
|
2185 | } else if (
|
2186 | expr.type === "ThisExpression" &&
|
2187 | this.scope.renames.get("this")
|
2188 | ) {
|
2189 | free = true;
|
2190 | exprName.push(this.scope.renames.get("this"));
|
2191 | } else if (expr.type === "ThisExpression") {
|
2192 | free = this.scope.topLevelScope;
|
2193 | exprName.push("this");
|
2194 | } else {
|
2195 | return null;
|
2196 | }
|
2197 | let prefix = "";
|
2198 | for (let i = exprName.length - 1; i >= 2; i--) {
|
2199 | prefix += exprName[i] + ".";
|
2200 | }
|
2201 | if (exprName.length > 1) {
|
2202 | prefix += exprName[1];
|
2203 | }
|
2204 | const name = prefix ? prefix + "." + exprName[0] : exprName[0];
|
2205 | const nameGeneral = prefix;
|
2206 | return {
|
2207 | name,
|
2208 | nameGeneral,
|
2209 | free
|
2210 | };
|
2211 | }
|
2212 |
|
2213 | static parse(code, options) {
|
2214 | const type = options ? options.sourceType : "module";
|
2215 | const parserOptions = Object.assign(
|
2216 | Object.create(null),
|
2217 | defaultParserOptions,
|
2218 | options
|
2219 | );
|
2220 |
|
2221 | if (type === "auto") {
|
2222 | parserOptions.sourceType = "module";
|
2223 | }
|
2224 |
|
2225 | let ast;
|
2226 | let error;
|
2227 | let threw = false;
|
2228 | try {
|
2229 | ast = acorn.parse(code, parserOptions);
|
2230 | } catch (e) {
|
2231 | error = e;
|
2232 | threw = true;
|
2233 | }
|
2234 |
|
2235 | if (threw && type === "auto") {
|
2236 | parserOptions.sourceType = "script";
|
2237 | if (Array.isArray(parserOptions.onComment)) {
|
2238 | parserOptions.onComment.length = 0;
|
2239 | }
|
2240 | try {
|
2241 | ast = acorn.parse(code, parserOptions);
|
2242 | threw = false;
|
2243 | } catch (e) {
|
2244 | threw = true;
|
2245 | }
|
2246 | }
|
2247 |
|
2248 | if (threw) {
|
2249 | throw error;
|
2250 | }
|
2251 |
|
2252 | return ast;
|
2253 | }
|
2254 | }
|
2255 |
|
2256 |
|
2257 | Object.defineProperty(Parser.prototype, "getCommentOptions", {
|
2258 | configurable: false,
|
2259 | value: util.deprecate(
|
2260 | |
2261 |
|
2262 |
|
2263 |
|
2264 |
|
2265 |
|
2266 | function(range) {
|
2267 | return this.parseCommentOptions(range).options;
|
2268 | },
|
2269 | "Parser.getCommentOptions: Use Parser.parseCommentOptions(range) instead"
|
2270 | )
|
2271 | });
|
2272 |
|
2273 | module.exports = Parser;
|