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");
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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 |
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16 | const acornParser = acorn.Parser;
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17 |
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18 | const joinRanges = (startRange, endRange) => {
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19 | if (!endRange) return startRange;
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20 | if (!startRange) return endRange;
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21 | return [startRange[0], endRange[1]];
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22 | };
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23 |
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24 | const defaultParserOptions = {
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25 | ranges: true,
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26 | locations: true,
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27 | ecmaVersion: 11,
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28 | sourceType: "module",
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29 | onComment: null
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30 | };
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31 |
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32 |
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33 | const webpackCommentRegExp = new RegExp(/(^|\W)webpack[A-Z]{1,}[A-Za-z]{1,}:/);
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34 |
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35 | const EMPTY_COMMENT_OPTIONS = {
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36 | options: null,
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37 | errors: null
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38 | };
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39 |
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40 | class Parser extends Tapable {
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41 | constructor(options, sourceType = "auto") {
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42 | super();
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43 | this.hooks = {
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44 | evaluateTypeof: new HookMap(() => new SyncBailHook(["expression"])),
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45 | evaluate: new HookMap(() => new SyncBailHook(["expression"])),
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46 | evaluateIdentifier: new HookMap(() => new SyncBailHook(["expression"])),
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47 | evaluateDefinedIdentifier: new HookMap(
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48 | () => new SyncBailHook(["expression"])
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49 | ),
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50 | evaluateCallExpressionMember: new HookMap(
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51 | () => new SyncBailHook(["expression", "param"])
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52 | ),
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53 | statement: new SyncBailHook(["statement"]),
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54 | statementIf: new SyncBailHook(["statement"]),
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55 | label: new HookMap(() => new SyncBailHook(["statement"])),
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56 | import: new SyncBailHook(["statement", "source"]),
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57 | importSpecifier: new SyncBailHook([
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58 | "statement",
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59 | "source",
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60 | "exportName",
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61 | "identifierName"
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62 | ]),
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63 | export: new SyncBailHook(["statement"]),
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64 | exportImport: new SyncBailHook(["statement", "source"]),
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65 | exportDeclaration: new SyncBailHook(["statement", "declaration"]),
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66 | exportExpression: new SyncBailHook(["statement", "declaration"]),
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67 | exportSpecifier: new SyncBailHook([
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68 | "statement",
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69 | "identifierName",
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70 | "exportName",
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71 | "index"
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72 | ]),
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73 | exportImportSpecifier: new SyncBailHook([
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74 | "statement",
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75 | "source",
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76 | "identifierName",
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77 | "exportName",
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78 | "index"
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79 | ]),
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80 | varDeclaration: new HookMap(() => new SyncBailHook(["declaration"])),
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81 | varDeclarationLet: new HookMap(() => new SyncBailHook(["declaration"])),
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82 | varDeclarationConst: new HookMap(() => new SyncBailHook(["declaration"])),
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83 | varDeclarationVar: new HookMap(() => new SyncBailHook(["declaration"])),
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84 | canRename: new HookMap(() => new SyncBailHook(["initExpression"])),
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85 | rename: new HookMap(() => new SyncBailHook(["initExpression"])),
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86 | assigned: new HookMap(() => new SyncBailHook(["expression"])),
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87 | assign: new HookMap(() => new SyncBailHook(["expression"])),
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88 | typeof: new HookMap(() => new SyncBailHook(["expression"])),
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89 | importCall: new SyncBailHook(["expression"]),
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90 | call: new HookMap(() => new SyncBailHook(["expression"])),
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91 | callAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
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92 | new: new HookMap(() => new SyncBailHook(["expression"])),
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93 | expression: new HookMap(() => new SyncBailHook(["expression"])),
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94 | expressionAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
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95 | expressionConditionalOperator: new SyncBailHook(["expression"]),
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96 | expressionLogicalOperator: new SyncBailHook(["expression"]),
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97 | program: new SyncBailHook(["ast", "comments"])
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98 | };
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99 | const HOOK_MAP_COMPAT_CONFIG = {
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100 | evaluateTypeof: /^evaluate typeof (.+)$/,
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101 | evaluateIdentifier: /^evaluate Identifier (.+)$/,
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102 | evaluateDefinedIdentifier: /^evaluate defined Identifier (.+)$/,
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103 | evaluateCallExpressionMember: /^evaluate CallExpression .(.+)$/,
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104 | evaluate: /^evaluate (.+)$/,
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105 | label: /^label (.+)$/,
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106 | varDeclarationLet: /^var-let (.+)$/,
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107 | varDeclarationConst: /^var-const (.+)$/,
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108 | varDeclarationVar: /^var-var (.+)$/,
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109 | varDeclaration: /^var (.+)$/,
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110 | canRename: /^can-rename (.+)$/,
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111 | rename: /^rename (.+)$/,
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112 | typeof: /^typeof (.+)$/,
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113 | assigned: /^assigned (.+)$/,
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114 | assign: /^assign (.+)$/,
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115 | callAnyMember: /^call (.+)\.\*$/,
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116 | call: /^call (.+)$/,
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117 | new: /^new (.+)$/,
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118 | expressionConditionalOperator: /^expression \?:$/,
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119 | expressionAnyMember: /^expression (.+)\.\*$/,
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120 | expression: /^expression (.+)$/
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121 | };
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122 | this._pluginCompat.tap("Parser", options => {
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123 | for (const name of Object.keys(HOOK_MAP_COMPAT_CONFIG)) {
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124 | const regexp = HOOK_MAP_COMPAT_CONFIG[name];
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125 | const match = regexp.exec(options.name);
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126 | if (match) {
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127 | if (match[1]) {
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128 | this.hooks[name].tap(
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129 | match[1],
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130 | options.fn.name || "unnamed compat plugin",
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131 | options.fn.bind(this)
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132 | );
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133 | } else {
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134 | this.hooks[name].tap(
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135 | options.fn.name || "unnamed compat plugin",
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136 | options.fn.bind(this)
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137 | );
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138 | }
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139 | return true;
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140 | }
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141 | }
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142 | });
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143 | this.options = options;
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144 | this.sourceType = sourceType;
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145 | this.scope = undefined;
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146 | this.state = undefined;
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147 | this.comments = undefined;
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148 | this.initializeEvaluating();
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149 | }
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150 |
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151 | initializeEvaluating() {
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152 | this.hooks.evaluate.for("Literal").tap("Parser", expr => {
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153 | switch (typeof expr.value) {
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154 | case "number":
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155 | return new BasicEvaluatedExpression()
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156 | .setNumber(expr.value)
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157 | .setRange(expr.range);
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158 | case "string":
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159 | return new BasicEvaluatedExpression()
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160 | .setString(expr.value)
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161 | .setRange(expr.range);
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162 | case "boolean":
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163 | return new BasicEvaluatedExpression()
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164 | .setBoolean(expr.value)
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165 | .setRange(expr.range);
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166 | }
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167 | if (expr.value === null) {
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168 | return new BasicEvaluatedExpression().setNull().setRange(expr.range);
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169 | }
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170 | if (expr.value instanceof RegExp) {
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171 | return new BasicEvaluatedExpression()
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172 | .setRegExp(expr.value)
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173 | .setRange(expr.range);
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174 | }
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175 | });
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176 | this.hooks.evaluate.for("LogicalExpression").tap("Parser", expr => {
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177 | let left;
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178 | let leftAsBool;
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179 | let right;
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180 | if (expr.operator === "&&") {
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181 | left = this.evaluateExpression(expr.left);
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182 | leftAsBool = left && left.asBool();
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183 | if (leftAsBool === false) return left.setRange(expr.range);
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184 | if (leftAsBool !== true) return;
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185 | right = this.evaluateExpression(expr.right);
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186 | return right.setRange(expr.range);
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187 | } else if (expr.operator === "||") {
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188 | left = this.evaluateExpression(expr.left);
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189 | leftAsBool = left && left.asBool();
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190 | if (leftAsBool === true) return left.setRange(expr.range);
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191 | if (leftAsBool !== false) return;
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192 | right = this.evaluateExpression(expr.right);
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193 | return right.setRange(expr.range);
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194 | }
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195 | });
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196 | this.hooks.evaluate.for("BinaryExpression").tap("Parser", expr => {
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197 | let left;
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198 | let right;
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199 | let res;
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200 | if (expr.operator === "+") {
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201 | left = this.evaluateExpression(expr.left);
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202 | right = this.evaluateExpression(expr.right);
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203 | if (!left || !right) return;
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204 | res = new BasicEvaluatedExpression();
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205 | if (left.isString()) {
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206 | if (right.isString()) {
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207 | res.setString(left.string + right.string);
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208 | } else if (right.isNumber()) {
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209 | res.setString(left.string + right.number);
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210 | } else if (
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211 | right.isWrapped() &&
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212 | right.prefix &&
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213 | right.prefix.isString()
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214 | ) {
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215 |
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216 |
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217 | res.setWrapped(
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218 | new BasicEvaluatedExpression()
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219 | .setString(left.string + right.prefix.string)
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220 | .setRange(joinRanges(left.range, right.prefix.range)),
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221 | right.postfix,
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222 | right.wrappedInnerExpressions
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223 | );
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224 | } else if (right.isWrapped()) {
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225 |
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226 |
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227 | res.setWrapped(left, right.postfix, right.wrappedInnerExpressions);
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228 | } else {
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229 |
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230 |
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231 | res.setWrapped(left, null, [right]);
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232 | }
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233 | } else if (left.isNumber()) {
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234 | if (right.isString()) {
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235 | res.setString(left.number + right.string);
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236 | } else if (right.isNumber()) {
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237 | res.setNumber(left.number + right.number);
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238 | } else {
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239 | return;
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240 | }
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241 | } else if (left.isWrapped()) {
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242 | if (left.postfix && left.postfix.isString() && right.isString()) {
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243 |
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244 |
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245 | res.setWrapped(
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246 | left.prefix,
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247 | new BasicEvaluatedExpression()
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248 | .setString(left.postfix.string + right.string)
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249 | .setRange(joinRanges(left.postfix.range, right.range)),
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250 | left.wrappedInnerExpressions
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251 | );
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252 | } else if (
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253 | left.postfix &&
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254 | left.postfix.isString() &&
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255 | right.isNumber()
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256 | ) {
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257 |
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258 |
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259 | res.setWrapped(
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260 | left.prefix,
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261 | new BasicEvaluatedExpression()
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262 | .setString(left.postfix.string + right.number)
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263 | .setRange(joinRanges(left.postfix.range, right.range)),
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264 | left.wrappedInnerExpressions
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265 | );
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266 | } else if (right.isString()) {
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267 |
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268 |
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269 | res.setWrapped(left.prefix, right, left.wrappedInnerExpressions);
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270 | } else if (right.isNumber()) {
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271 |
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272 |
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273 | res.setWrapped(
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274 | left.prefix,
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275 | new BasicEvaluatedExpression()
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276 | .setString(right.number + "")
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277 | .setRange(right.range),
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278 | left.wrappedInnerExpressions
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279 | );
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280 | } else if (right.isWrapped()) {
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281 |
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282 |
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283 | res.setWrapped(
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284 | left.prefix,
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285 | right.postfix,
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286 | left.wrappedInnerExpressions &&
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287 | right.wrappedInnerExpressions &&
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288 | left.wrappedInnerExpressions
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289 | .concat(left.postfix ? [left.postfix] : [])
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290 | .concat(right.prefix ? [right.prefix] : [])
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291 | .concat(right.wrappedInnerExpressions)
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292 | );
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293 | } else {
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294 |
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295 |
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296 | res.setWrapped(
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297 | left.prefix,
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298 | null,
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299 | left.wrappedInnerExpressions &&
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300 | left.wrappedInnerExpressions.concat(
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301 | left.postfix ? [left.postfix, right] : [right]
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302 | )
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303 | );
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304 | }
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305 | } else {
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306 | if (right.isString()) {
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307 |
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308 |
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309 | res.setWrapped(null, right, [left]);
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310 | } else if (right.isWrapped()) {
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311 |
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312 |
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313 | res.setWrapped(
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314 | null,
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315 | right.postfix,
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316 | right.wrappedInnerExpressions &&
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317 | (right.prefix ? [left, right.prefix] : [left]).concat(
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318 | right.wrappedInnerExpressions
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319 | )
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320 | );
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321 | } else {
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322 | return;
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323 | }
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324 | }
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325 | res.setRange(expr.range);
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326 | return res;
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327 | } else if (expr.operator === "-") {
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328 | left = this.evaluateExpression(expr.left);
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329 | right = this.evaluateExpression(expr.right);
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330 | if (!left || !right) return;
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331 | if (!left.isNumber() || !right.isNumber()) return;
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332 | res = new BasicEvaluatedExpression();
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333 | res.setNumber(left.number - right.number);
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334 | res.setRange(expr.range);
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335 | return res;
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336 | } else if (expr.operator === "*") {
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337 | left = this.evaluateExpression(expr.left);
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338 | right = this.evaluateExpression(expr.right);
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339 | if (!left || !right) return;
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340 | if (!left.isNumber() || !right.isNumber()) return;
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341 | res = new BasicEvaluatedExpression();
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342 | res.setNumber(left.number * right.number);
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343 | res.setRange(expr.range);
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344 | return res;
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345 | } else if (expr.operator === "/") {
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346 | left = this.evaluateExpression(expr.left);
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347 | right = this.evaluateExpression(expr.right);
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348 | if (!left || !right) return;
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349 | if (!left.isNumber() || !right.isNumber()) return;
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350 | res = new BasicEvaluatedExpression();
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351 | res.setNumber(left.number / right.number);
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352 | res.setRange(expr.range);
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353 | return res;
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354 | } else if (expr.operator === "**") {
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355 | left = this.evaluateExpression(expr.left);
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356 | right = this.evaluateExpression(expr.right);
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357 | if (!left || !right) return;
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358 | if (!left.isNumber() || !right.isNumber()) return;
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359 | res = new BasicEvaluatedExpression();
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360 | res.setNumber(Math.pow(left.number, right.number));
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361 | res.setRange(expr.range);
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362 | return res;
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363 | } else if (expr.operator === "==" || expr.operator === "===") {
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364 | left = this.evaluateExpression(expr.left);
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365 | right = this.evaluateExpression(expr.right);
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366 | if (!left || !right) return;
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367 | res = new BasicEvaluatedExpression();
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368 | res.setRange(expr.range);
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369 | if (left.isString() && right.isString()) {
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370 | return res.setBoolean(left.string === right.string);
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371 | } else if (left.isNumber() && right.isNumber()) {
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372 | return res.setBoolean(left.number === right.number);
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373 | } else if (left.isBoolean() && right.isBoolean()) {
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374 | return res.setBoolean(left.bool === right.bool);
|
375 | }
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376 | } else if (expr.operator === "!=" || expr.operator === "!==") {
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377 | left = this.evaluateExpression(expr.left);
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378 | right = this.evaluateExpression(expr.right);
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379 | if (!left || !right) return;
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380 | res = new BasicEvaluatedExpression();
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381 | res.setRange(expr.range);
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382 | if (left.isString() && right.isString()) {
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383 | return res.setBoolean(left.string !== right.string);
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384 | } else if (left.isNumber() && right.isNumber()) {
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385 | return res.setBoolean(left.number !== right.number);
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386 | } else if (left.isBoolean() && right.isBoolean()) {
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387 | return res.setBoolean(left.bool !== right.bool);
|
388 | }
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389 | } else if (expr.operator === "&") {
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390 | left = this.evaluateExpression(expr.left);
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391 | right = this.evaluateExpression(expr.right);
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392 | if (!left || !right) return;
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393 | if (!left.isNumber() || !right.isNumber()) return;
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394 | res = new BasicEvaluatedExpression();
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395 | res.setNumber(left.number & right.number);
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396 | res.setRange(expr.range);
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397 | return res;
|
398 | } else if (expr.operator === "|") {
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399 | left = this.evaluateExpression(expr.left);
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400 | right = this.evaluateExpression(expr.right);
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401 | if (!left || !right) return;
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402 | if (!left.isNumber() || !right.isNumber()) return;
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403 | res = new BasicEvaluatedExpression();
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404 | res.setNumber(left.number | right.number);
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405 | res.setRange(expr.range);
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406 | return res;
|
407 | } else if (expr.operator === "^") {
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408 | left = this.evaluateExpression(expr.left);
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409 | right = this.evaluateExpression(expr.right);
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410 | if (!left || !right) return;
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411 | if (!left.isNumber() || !right.isNumber()) return;
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412 | res = new BasicEvaluatedExpression();
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413 | res.setNumber(left.number ^ right.number);
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414 | res.setRange(expr.range);
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415 | return res;
|
416 | } else if (expr.operator === ">>>") {
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417 | left = this.evaluateExpression(expr.left);
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418 | right = this.evaluateExpression(expr.right);
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419 | if (!left || !right) return;
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420 | if (!left.isNumber() || !right.isNumber()) return;
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421 | res = new BasicEvaluatedExpression();
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422 | res.setNumber(left.number >>> right.number);
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423 | res.setRange(expr.range);
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424 | return res;
|
425 | } else if (expr.operator === ">>") {
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426 | left = this.evaluateExpression(expr.left);
|
427 | right = this.evaluateExpression(expr.right);
|
428 | if (!left || !right) return;
|
429 | if (!left.isNumber() || !right.isNumber()) return;
|
430 | res = new BasicEvaluatedExpression();
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431 | res.setNumber(left.number >> right.number);
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432 | res.setRange(expr.range);
|
433 | return res;
|
434 | } else if (expr.operator === "<<") {
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435 | left = this.evaluateExpression(expr.left);
|
436 | right = this.evaluateExpression(expr.right);
|
437 | if (!left || !right) return;
|
438 | if (!left.isNumber() || !right.isNumber()) return;
|
439 | res = new BasicEvaluatedExpression();
|
440 | res.setNumber(left.number << right.number);
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441 | res.setRange(expr.range);
|
442 | return res;
|
443 | }
|
444 | });
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445 | this.hooks.evaluate.for("UnaryExpression").tap("Parser", expr => {
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446 | if (expr.operator === "typeof") {
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447 | let res;
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448 | let name;
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449 | if (expr.argument.type === "Identifier") {
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450 | name =
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451 | this.scope.renames.get(expr.argument.name) || expr.argument.name;
|
452 | if (!this.scope.definitions.has(name)) {
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453 | const hook = this.hooks.evaluateTypeof.get(name);
|
454 | if (hook !== undefined) {
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455 | res = hook.call(expr);
|
456 | if (res !== undefined) return res;
|
457 | }
|
458 | }
|
459 | }
|
460 | if (expr.argument.type === "MemberExpression") {
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461 | const exprName = this.getNameForExpression(expr.argument);
|
462 | if (exprName && exprName.free) {
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463 | const hook = this.hooks.evaluateTypeof.get(exprName.name);
|
464 | if (hook !== undefined) {
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465 | res = hook.call(expr);
|
466 | if (res !== undefined) return res;
|
467 | }
|
468 | }
|
469 | }
|
470 | if (expr.argument.type === "FunctionExpression") {
|
471 | return new BasicEvaluatedExpression()
|
472 | .setString("function")
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473 | .setRange(expr.range);
|
474 | }
|
475 | const arg = this.evaluateExpression(expr.argument);
|
476 | if (arg.isString() || arg.isWrapped()) {
|
477 | return new BasicEvaluatedExpression()
|
478 | .setString("string")
|
479 | .setRange(expr.range);
|
480 | }
|
481 | if (arg.isNumber()) {
|
482 | return new BasicEvaluatedExpression()
|
483 | .setString("number")
|
484 | .setRange(expr.range);
|
485 | }
|
486 | if (arg.isBoolean()) {
|
487 | return new BasicEvaluatedExpression()
|
488 | .setString("boolean")
|
489 | .setRange(expr.range);
|
490 | }
|
491 | if (arg.isArray() || arg.isConstArray() || arg.isRegExp()) {
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492 | return new BasicEvaluatedExpression()
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493 | .setString("object")
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494 | .setRange(expr.range);
|
495 | }
|
496 | } else if (expr.operator === "!") {
|
497 | const argument = this.evaluateExpression(expr.argument);
|
498 | if (!argument) return;
|
499 | if (argument.isBoolean()) {
|
500 | return new BasicEvaluatedExpression()
|
501 | .setBoolean(!argument.bool)
|
502 | .setRange(expr.range);
|
503 | }
|
504 | if (argument.isTruthy()) {
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505 | return new BasicEvaluatedExpression()
|
506 | .setBoolean(false)
|
507 | .setRange(expr.range);
|
508 | }
|
509 | if (argument.isFalsy()) {
|
510 | return new BasicEvaluatedExpression()
|
511 | .setBoolean(true)
|
512 | .setRange(expr.range);
|
513 | }
|
514 | if (argument.isString()) {
|
515 | return new BasicEvaluatedExpression()
|
516 | .setBoolean(!argument.string)
|
517 | .setRange(expr.range);
|
518 | }
|
519 | if (argument.isNumber()) {
|
520 | return new BasicEvaluatedExpression()
|
521 | .setBoolean(!argument.number)
|
522 | .setRange(expr.range);
|
523 | }
|
524 | } else if (expr.operator === "~") {
|
525 | const argument = this.evaluateExpression(expr.argument);
|
526 | if (!argument) return;
|
527 | if (!argument.isNumber()) return;
|
528 | const res = new BasicEvaluatedExpression();
|
529 | res.setNumber(~argument.number);
|
530 | res.setRange(expr.range);
|
531 | return res;
|
532 | }
|
533 | });
|
534 | this.hooks.evaluateTypeof.for("undefined").tap("Parser", expr => {
|
535 | return new BasicEvaluatedExpression()
|
536 | .setString("undefined")
|
537 | .setRange(expr.range);
|
538 | });
|
539 | this.hooks.evaluate.for("Identifier").tap("Parser", expr => {
|
540 | const name = this.scope.renames.get(expr.name) || expr.name;
|
541 | if (!this.scope.definitions.has(expr.name)) {
|
542 | const hook = this.hooks.evaluateIdentifier.get(name);
|
543 | if (hook !== undefined) {
|
544 | const result = hook.call(expr);
|
545 | if (result) return result;
|
546 | }
|
547 | return new BasicEvaluatedExpression()
|
548 | .setIdentifier(name)
|
549 | .setRange(expr.range);
|
550 | } else {
|
551 | const hook = this.hooks.evaluateDefinedIdentifier.get(name);
|
552 | if (hook !== undefined) {
|
553 | return hook.call(expr);
|
554 | }
|
555 | }
|
556 | });
|
557 | this.hooks.evaluate.for("ThisExpression").tap("Parser", expr => {
|
558 | const name = this.scope.renames.get("this");
|
559 | if (name) {
|
560 | const hook = this.hooks.evaluateIdentifier.get(name);
|
561 | if (hook !== undefined) {
|
562 | const result = hook.call(expr);
|
563 | if (result) return result;
|
564 | }
|
565 | return new BasicEvaluatedExpression()
|
566 | .setIdentifier(name)
|
567 | .setRange(expr.range);
|
568 | }
|
569 | });
|
570 | this.hooks.evaluate.for("MemberExpression").tap("Parser", expression => {
|
571 | let exprName = this.getNameForExpression(expression);
|
572 | if (exprName) {
|
573 | if (exprName.free) {
|
574 | const hook = this.hooks.evaluateIdentifier.get(exprName.name);
|
575 | if (hook !== undefined) {
|
576 | const result = hook.call(expression);
|
577 | if (result) return result;
|
578 | }
|
579 | return new BasicEvaluatedExpression()
|
580 | .setIdentifier(exprName.name)
|
581 | .setRange(expression.range);
|
582 | } else {
|
583 | const hook = this.hooks.evaluateDefinedIdentifier.get(exprName.name);
|
584 | if (hook !== undefined) {
|
585 | return hook.call(expression);
|
586 | }
|
587 | }
|
588 | }
|
589 | });
|
590 | this.hooks.evaluate.for("CallExpression").tap("Parser", expr => {
|
591 | if (expr.callee.type !== "MemberExpression") return;
|
592 | if (
|
593 | expr.callee.property.type !==
|
594 | (expr.callee.computed ? "Literal" : "Identifier")
|
595 | )
|
596 | return;
|
597 | const param = this.evaluateExpression(expr.callee.object);
|
598 | if (!param) return;
|
599 | const property = expr.callee.property.name || expr.callee.property.value;
|
600 | const hook = this.hooks.evaluateCallExpressionMember.get(property);
|
601 | if (hook !== undefined) {
|
602 | return hook.call(expr, param);
|
603 | }
|
604 | });
|
605 | this.hooks.evaluateCallExpressionMember
|
606 | .for("replace")
|
607 | .tap("Parser", (expr, param) => {
|
608 | if (!param.isString()) return;
|
609 | if (expr.arguments.length !== 2) return;
|
610 | let arg1 = this.evaluateExpression(expr.arguments[0]);
|
611 | let arg2 = this.evaluateExpression(expr.arguments[1]);
|
612 | if (!arg1.isString() && !arg1.isRegExp()) return;
|
613 | arg1 = arg1.regExp || arg1.string;
|
614 | if (!arg2.isString()) return;
|
615 | arg2 = arg2.string;
|
616 | return new BasicEvaluatedExpression()
|
617 | .setString(param.string.replace(arg1, arg2))
|
618 | .setRange(expr.range);
|
619 | });
|
620 | ["substr", "substring"].forEach(fn => {
|
621 | this.hooks.evaluateCallExpressionMember
|
622 | .for(fn)
|
623 | .tap("Parser", (expr, param) => {
|
624 | if (!param.isString()) return;
|
625 | let arg1;
|
626 | let result,
|
627 | str = param.string;
|
628 | switch (expr.arguments.length) {
|
629 | case 1:
|
630 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
631 | if (!arg1.isNumber()) return;
|
632 | result = str[fn](arg1.number);
|
633 | break;
|
634 | case 2: {
|
635 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
636 | const arg2 = this.evaluateExpression(expr.arguments[1]);
|
637 | if (!arg1.isNumber()) return;
|
638 | if (!arg2.isNumber()) return;
|
639 | result = str[fn](arg1.number, arg2.number);
|
640 | break;
|
641 | }
|
642 | default:
|
643 | return;
|
644 | }
|
645 | return new BasicEvaluatedExpression()
|
646 | .setString(result)
|
647 | .setRange(expr.range);
|
648 | });
|
649 | });
|
650 |
|
651 | |
652 |
|
653 |
|
654 |
|
655 |
|
656 | const getSimplifiedTemplateResult = (kind, templateLiteralExpr) => {
|
657 | const quasis = [];
|
658 | const parts = [];
|
659 |
|
660 | for (let i = 0; i < templateLiteralExpr.quasis.length; i++) {
|
661 | const quasiExpr = templateLiteralExpr.quasis[i];
|
662 | const quasi = quasiExpr.value[kind];
|
663 |
|
664 | if (i > 0) {
|
665 | const prevExpr = parts[parts.length - 1];
|
666 | const expr = this.evaluateExpression(
|
667 | templateLiteralExpr.expressions[i - 1]
|
668 | );
|
669 | const exprAsString = expr.asString();
|
670 | if (typeof exprAsString === "string") {
|
671 |
|
672 |
|
673 |
|
674 | prevExpr.setString(prevExpr.string + exprAsString + quasi);
|
675 | prevExpr.setRange([prevExpr.range[0], quasiExpr.range[1]]);
|
676 |
|
677 | prevExpr.setExpression(undefined);
|
678 | continue;
|
679 | }
|
680 | parts.push(expr);
|
681 | }
|
682 |
|
683 | const part = new BasicEvaluatedExpression()
|
684 | .setString(quasi)
|
685 | .setRange(quasiExpr.range)
|
686 | .setExpression(quasiExpr);
|
687 | quasis.push(part);
|
688 | parts.push(part);
|
689 | }
|
690 | return {
|
691 | quasis,
|
692 | parts
|
693 | };
|
694 | };
|
695 |
|
696 | this.hooks.evaluate.for("TemplateLiteral").tap("Parser", node => {
|
697 | const { quasis, parts } = getSimplifiedTemplateResult("cooked", node);
|
698 | if (parts.length === 1) {
|
699 | return parts[0].setRange(node.range);
|
700 | }
|
701 | return new BasicEvaluatedExpression()
|
702 | .setTemplateString(quasis, parts, "cooked")
|
703 | .setRange(node.range);
|
704 | });
|
705 | this.hooks.evaluate.for("TaggedTemplateExpression").tap("Parser", node => {
|
706 | if (this.evaluateExpression(node.tag).identifier !== "String.raw") return;
|
707 | const { quasis, parts } = getSimplifiedTemplateResult("raw", node.quasi);
|
708 | if (parts.length === 1) {
|
709 | return parts[0].setRange(node.range);
|
710 | }
|
711 | return new BasicEvaluatedExpression()
|
712 | .setTemplateString(quasis, parts, "raw")
|
713 | .setRange(node.range);
|
714 | });
|
715 |
|
716 | this.hooks.evaluateCallExpressionMember
|
717 | .for("concat")
|
718 | .tap("Parser", (expr, param) => {
|
719 | if (!param.isString() && !param.isWrapped()) return;
|
720 |
|
721 | let stringSuffix = null;
|
722 | let hasUnknownParams = false;
|
723 | for (let i = expr.arguments.length - 1; i >= 0; i--) {
|
724 | const argExpr = this.evaluateExpression(expr.arguments[i]);
|
725 | if (!argExpr.isString() && !argExpr.isNumber()) {
|
726 | hasUnknownParams = true;
|
727 | break;
|
728 | }
|
729 |
|
730 | const value = argExpr.isString()
|
731 | ? argExpr.string
|
732 | : "" + argExpr.number;
|
733 |
|
734 | const newString = value + (stringSuffix ? stringSuffix.string : "");
|
735 | const newRange = [
|
736 | argExpr.range[0],
|
737 | (stringSuffix || argExpr).range[1]
|
738 | ];
|
739 | stringSuffix = new BasicEvaluatedExpression()
|
740 | .setString(newString)
|
741 | .setRange(newRange);
|
742 | }
|
743 |
|
744 | if (hasUnknownParams) {
|
745 | const prefix = param.isString() ? param : param.prefix;
|
746 | return new BasicEvaluatedExpression()
|
747 | .setWrapped(prefix, stringSuffix)
|
748 | .setRange(expr.range);
|
749 | } else if (param.isWrapped()) {
|
750 | const postfix = stringSuffix || param.postfix;
|
751 | return new BasicEvaluatedExpression()
|
752 | .setWrapped(param.prefix, postfix)
|
753 | .setRange(expr.range);
|
754 | } else {
|
755 | const newString =
|
756 | param.string + (stringSuffix ? stringSuffix.string : "");
|
757 | return new BasicEvaluatedExpression()
|
758 | .setString(newString)
|
759 | .setRange(expr.range);
|
760 | }
|
761 | });
|
762 | this.hooks.evaluateCallExpressionMember
|
763 | .for("split")
|
764 | .tap("Parser", (expr, param) => {
|
765 | if (!param.isString()) return;
|
766 | if (expr.arguments.length !== 1) return;
|
767 | let result;
|
768 | const arg = this.evaluateExpression(expr.arguments[0]);
|
769 | if (arg.isString()) {
|
770 | result = param.string.split(arg.string);
|
771 | } else if (arg.isRegExp()) {
|
772 | result = param.string.split(arg.regExp);
|
773 | } else {
|
774 | return;
|
775 | }
|
776 | return new BasicEvaluatedExpression()
|
777 | .setArray(result)
|
778 | .setRange(expr.range);
|
779 | });
|
780 | this.hooks.evaluate.for("ConditionalExpression").tap("Parser", expr => {
|
781 | const condition = this.evaluateExpression(expr.test);
|
782 | const conditionValue = condition.asBool();
|
783 | let res;
|
784 | if (conditionValue === undefined) {
|
785 | const consequent = this.evaluateExpression(expr.consequent);
|
786 | const alternate = this.evaluateExpression(expr.alternate);
|
787 | if (!consequent || !alternate) return;
|
788 | res = new BasicEvaluatedExpression();
|
789 | if (consequent.isConditional()) {
|
790 | res.setOptions(consequent.options);
|
791 | } else {
|
792 | res.setOptions([consequent]);
|
793 | }
|
794 | if (alternate.isConditional()) {
|
795 | res.addOptions(alternate.options);
|
796 | } else {
|
797 | res.addOptions([alternate]);
|
798 | }
|
799 | } else {
|
800 | res = this.evaluateExpression(
|
801 | conditionValue ? expr.consequent : expr.alternate
|
802 | );
|
803 | }
|
804 | res.setRange(expr.range);
|
805 | return res;
|
806 | });
|
807 | this.hooks.evaluate.for("ArrayExpression").tap("Parser", expr => {
|
808 | const items = expr.elements.map(element => {
|
809 | return element !== null && this.evaluateExpression(element);
|
810 | });
|
811 | if (!items.every(Boolean)) return;
|
812 | return new BasicEvaluatedExpression()
|
813 | .setItems(items)
|
814 | .setRange(expr.range);
|
815 | });
|
816 | }
|
817 |
|
818 | getRenameIdentifier(expr) {
|
819 | const result = this.evaluateExpression(expr);
|
820 | if (result && result.isIdentifier()) {
|
821 | return result.identifier;
|
822 | }
|
823 | }
|
824 |
|
825 | walkClass(classy) {
|
826 | if (classy.superClass) this.walkExpression(classy.superClass);
|
827 | if (classy.body && classy.body.type === "ClassBody") {
|
828 | const wasTopLevel = this.scope.topLevelScope;
|
829 | this.scope.topLevelScope = false;
|
830 | for (const methodDefinition of classy.body.body) {
|
831 | if (methodDefinition.type === "MethodDefinition") {
|
832 | this.walkMethodDefinition(methodDefinition);
|
833 | }
|
834 | }
|
835 | this.scope.topLevelScope = wasTopLevel;
|
836 | }
|
837 | }
|
838 |
|
839 | walkMethodDefinition(methodDefinition) {
|
840 | if (methodDefinition.computed && methodDefinition.key) {
|
841 | this.walkExpression(methodDefinition.key);
|
842 | }
|
843 | if (methodDefinition.value) {
|
844 | this.walkExpression(methodDefinition.value);
|
845 | }
|
846 | }
|
847 |
|
848 |
|
849 | prewalkStatements(statements) {
|
850 | for (let index = 0, len = statements.length; index < len; index++) {
|
851 | const statement = statements[index];
|
852 | this.prewalkStatement(statement);
|
853 | }
|
854 | }
|
855 |
|
856 |
|
857 | blockPrewalkStatements(statements) {
|
858 | for (let index = 0, len = statements.length; index < len; index++) {
|
859 | const statement = statements[index];
|
860 | this.blockPrewalkStatement(statement);
|
861 | }
|
862 | }
|
863 |
|
864 |
|
865 | walkStatements(statements) {
|
866 | for (let index = 0, len = statements.length; index < len; index++) {
|
867 | const statement = statements[index];
|
868 | this.walkStatement(statement);
|
869 | }
|
870 | }
|
871 |
|
872 | prewalkStatement(statement) {
|
873 | switch (statement.type) {
|
874 | case "BlockStatement":
|
875 | this.prewalkBlockStatement(statement);
|
876 | break;
|
877 | case "DoWhileStatement":
|
878 | this.prewalkDoWhileStatement(statement);
|
879 | break;
|
880 | case "ExportAllDeclaration":
|
881 | this.prewalkExportAllDeclaration(statement);
|
882 | break;
|
883 | case "ExportDefaultDeclaration":
|
884 | this.prewalkExportDefaultDeclaration(statement);
|
885 | break;
|
886 | case "ExportNamedDeclaration":
|
887 | this.prewalkExportNamedDeclaration(statement);
|
888 | break;
|
889 | case "ForInStatement":
|
890 | this.prewalkForInStatement(statement);
|
891 | break;
|
892 | case "ForOfStatement":
|
893 | this.prewalkForOfStatement(statement);
|
894 | break;
|
895 | case "ForStatement":
|
896 | this.prewalkForStatement(statement);
|
897 | break;
|
898 | case "FunctionDeclaration":
|
899 | this.prewalkFunctionDeclaration(statement);
|
900 | break;
|
901 | case "IfStatement":
|
902 | this.prewalkIfStatement(statement);
|
903 | break;
|
904 | case "ImportDeclaration":
|
905 | this.prewalkImportDeclaration(statement);
|
906 | break;
|
907 | case "LabeledStatement":
|
908 | this.prewalkLabeledStatement(statement);
|
909 | break;
|
910 | case "SwitchStatement":
|
911 | this.prewalkSwitchStatement(statement);
|
912 | break;
|
913 | case "TryStatement":
|
914 | this.prewalkTryStatement(statement);
|
915 | break;
|
916 | case "VariableDeclaration":
|
917 | this.prewalkVariableDeclaration(statement);
|
918 | break;
|
919 | case "WhileStatement":
|
920 | this.prewalkWhileStatement(statement);
|
921 | break;
|
922 | case "WithStatement":
|
923 | this.prewalkWithStatement(statement);
|
924 | break;
|
925 | }
|
926 | }
|
927 |
|
928 | blockPrewalkStatement(statement) {
|
929 | switch (statement.type) {
|
930 | case "VariableDeclaration":
|
931 | this.blockPrewalkVariableDeclaration(statement);
|
932 | break;
|
933 | case "ExportDefaultDeclaration":
|
934 | this.blockPrewalkExportDefaultDeclaration(statement);
|
935 | break;
|
936 | case "ExportNamedDeclaration":
|
937 | this.blockPrewalkExportNamedDeclaration(statement);
|
938 | break;
|
939 | case "ClassDeclaration":
|
940 | this.blockPrewalkClassDeclaration(statement);
|
941 | break;
|
942 | }
|
943 | }
|
944 |
|
945 | walkStatement(statement) {
|
946 | if (this.hooks.statement.call(statement) !== undefined) return;
|
947 | switch (statement.type) {
|
948 | case "BlockStatement":
|
949 | this.walkBlockStatement(statement);
|
950 | break;
|
951 | case "ClassDeclaration":
|
952 | this.walkClassDeclaration(statement);
|
953 | break;
|
954 | case "DoWhileStatement":
|
955 | this.walkDoWhileStatement(statement);
|
956 | break;
|
957 | case "ExportDefaultDeclaration":
|
958 | this.walkExportDefaultDeclaration(statement);
|
959 | break;
|
960 | case "ExportNamedDeclaration":
|
961 | this.walkExportNamedDeclaration(statement);
|
962 | break;
|
963 | case "ExpressionStatement":
|
964 | this.walkExpressionStatement(statement);
|
965 | break;
|
966 | case "ForInStatement":
|
967 | this.walkForInStatement(statement);
|
968 | break;
|
969 | case "ForOfStatement":
|
970 | this.walkForOfStatement(statement);
|
971 | break;
|
972 | case "ForStatement":
|
973 | this.walkForStatement(statement);
|
974 | break;
|
975 | case "FunctionDeclaration":
|
976 | this.walkFunctionDeclaration(statement);
|
977 | break;
|
978 | case "IfStatement":
|
979 | this.walkIfStatement(statement);
|
980 | break;
|
981 | case "LabeledStatement":
|
982 | this.walkLabeledStatement(statement);
|
983 | break;
|
984 | case "ReturnStatement":
|
985 | this.walkReturnStatement(statement);
|
986 | break;
|
987 | case "SwitchStatement":
|
988 | this.walkSwitchStatement(statement);
|
989 | break;
|
990 | case "ThrowStatement":
|
991 | this.walkThrowStatement(statement);
|
992 | break;
|
993 | case "TryStatement":
|
994 | this.walkTryStatement(statement);
|
995 | break;
|
996 | case "VariableDeclaration":
|
997 | this.walkVariableDeclaration(statement);
|
998 | break;
|
999 | case "WhileStatement":
|
1000 | this.walkWhileStatement(statement);
|
1001 | break;
|
1002 | case "WithStatement":
|
1003 | this.walkWithStatement(statement);
|
1004 | break;
|
1005 | }
|
1006 | }
|
1007 |
|
1008 |
|
1009 | prewalkBlockStatement(statement) {
|
1010 | this.prewalkStatements(statement.body);
|
1011 | }
|
1012 |
|
1013 | walkBlockStatement(statement) {
|
1014 | this.inBlockScope(() => {
|
1015 | const body = statement.body;
|
1016 | this.blockPrewalkStatements(body);
|
1017 | this.walkStatements(body);
|
1018 | });
|
1019 | }
|
1020 |
|
1021 | walkExpressionStatement(statement) {
|
1022 | this.walkExpression(statement.expression);
|
1023 | }
|
1024 |
|
1025 | prewalkIfStatement(statement) {
|
1026 | this.prewalkStatement(statement.consequent);
|
1027 | if (statement.alternate) {
|
1028 | this.prewalkStatement(statement.alternate);
|
1029 | }
|
1030 | }
|
1031 |
|
1032 | walkIfStatement(statement) {
|
1033 | const result = this.hooks.statementIf.call(statement);
|
1034 | if (result === undefined) {
|
1035 | this.walkExpression(statement.test);
|
1036 | this.walkStatement(statement.consequent);
|
1037 | if (statement.alternate) {
|
1038 | this.walkStatement(statement.alternate);
|
1039 | }
|
1040 | } else {
|
1041 | if (result) {
|
1042 | this.walkStatement(statement.consequent);
|
1043 | } else if (statement.alternate) {
|
1044 | this.walkStatement(statement.alternate);
|
1045 | }
|
1046 | }
|
1047 | }
|
1048 |
|
1049 | prewalkLabeledStatement(statement) {
|
1050 | this.prewalkStatement(statement.body);
|
1051 | }
|
1052 |
|
1053 | walkLabeledStatement(statement) {
|
1054 | const hook = this.hooks.label.get(statement.label.name);
|
1055 | if (hook !== undefined) {
|
1056 | const result = hook.call(statement);
|
1057 | if (result === true) return;
|
1058 | }
|
1059 | this.walkStatement(statement.body);
|
1060 | }
|
1061 |
|
1062 | prewalkWithStatement(statement) {
|
1063 | this.prewalkStatement(statement.body);
|
1064 | }
|
1065 |
|
1066 | walkWithStatement(statement) {
|
1067 | this.walkExpression(statement.object);
|
1068 | this.walkStatement(statement.body);
|
1069 | }
|
1070 |
|
1071 | prewalkSwitchStatement(statement) {
|
1072 | this.prewalkSwitchCases(statement.cases);
|
1073 | }
|
1074 |
|
1075 | walkSwitchStatement(statement) {
|
1076 | this.walkExpression(statement.discriminant);
|
1077 | this.walkSwitchCases(statement.cases);
|
1078 | }
|
1079 |
|
1080 | walkTerminatingStatement(statement) {
|
1081 | if (statement.argument) this.walkExpression(statement.argument);
|
1082 | }
|
1083 |
|
1084 | walkReturnStatement(statement) {
|
1085 | this.walkTerminatingStatement(statement);
|
1086 | }
|
1087 |
|
1088 | walkThrowStatement(statement) {
|
1089 | this.walkTerminatingStatement(statement);
|
1090 | }
|
1091 |
|
1092 | prewalkTryStatement(statement) {
|
1093 | this.prewalkStatement(statement.block);
|
1094 | }
|
1095 |
|
1096 | walkTryStatement(statement) {
|
1097 | if (this.scope.inTry) {
|
1098 | this.walkStatement(statement.block);
|
1099 | } else {
|
1100 | this.scope.inTry = true;
|
1101 | this.walkStatement(statement.block);
|
1102 | this.scope.inTry = false;
|
1103 | }
|
1104 | if (statement.handler) this.walkCatchClause(statement.handler);
|
1105 | if (statement.finalizer) this.walkStatement(statement.finalizer);
|
1106 | }
|
1107 |
|
1108 | prewalkWhileStatement(statement) {
|
1109 | this.prewalkStatement(statement.body);
|
1110 | }
|
1111 |
|
1112 | walkWhileStatement(statement) {
|
1113 | this.walkExpression(statement.test);
|
1114 | this.walkStatement(statement.body);
|
1115 | }
|
1116 |
|
1117 | prewalkDoWhileStatement(statement) {
|
1118 | this.prewalkStatement(statement.body);
|
1119 | }
|
1120 |
|
1121 | walkDoWhileStatement(statement) {
|
1122 | this.walkStatement(statement.body);
|
1123 | this.walkExpression(statement.test);
|
1124 | }
|
1125 |
|
1126 | prewalkForStatement(statement) {
|
1127 | if (statement.init) {
|
1128 | if (statement.init.type === "VariableDeclaration") {
|
1129 | this.prewalkStatement(statement.init);
|
1130 | }
|
1131 | }
|
1132 | this.prewalkStatement(statement.body);
|
1133 | }
|
1134 |
|
1135 | walkForStatement(statement) {
|
1136 | this.inBlockScope(() => {
|
1137 | if (statement.init) {
|
1138 | if (statement.init.type === "VariableDeclaration") {
|
1139 | this.blockPrewalkVariableDeclaration(statement.init);
|
1140 | this.walkStatement(statement.init);
|
1141 | } else {
|
1142 | this.walkExpression(statement.init);
|
1143 | }
|
1144 | }
|
1145 | if (statement.test) {
|
1146 | this.walkExpression(statement.test);
|
1147 | }
|
1148 | if (statement.update) {
|
1149 | this.walkExpression(statement.update);
|
1150 | }
|
1151 | const body = statement.body;
|
1152 | if (body.type === "BlockStatement") {
|
1153 |
|
1154 | this.blockPrewalkStatements(body.body);
|
1155 | this.walkStatements(body.body);
|
1156 | } else {
|
1157 | this.walkStatement(body);
|
1158 | }
|
1159 | });
|
1160 | }
|
1161 |
|
1162 | prewalkForInStatement(statement) {
|
1163 | if (statement.left.type === "VariableDeclaration") {
|
1164 | this.prewalkVariableDeclaration(statement.left);
|
1165 | }
|
1166 | this.prewalkStatement(statement.body);
|
1167 | }
|
1168 |
|
1169 | walkForInStatement(statement) {
|
1170 | this.inBlockScope(() => {
|
1171 | if (statement.left.type === "VariableDeclaration") {
|
1172 | this.blockPrewalkVariableDeclaration(statement.left);
|
1173 | this.walkVariableDeclaration(statement.left);
|
1174 | } else {
|
1175 | this.walkPattern(statement.left);
|
1176 | }
|
1177 | this.walkExpression(statement.right);
|
1178 | const body = statement.body;
|
1179 | if (body.type === "BlockStatement") {
|
1180 |
|
1181 | this.blockPrewalkStatements(body.body);
|
1182 | this.walkStatements(body.body);
|
1183 | } else {
|
1184 | this.walkStatement(body);
|
1185 | }
|
1186 | });
|
1187 | }
|
1188 |
|
1189 | prewalkForOfStatement(statement) {
|
1190 | if (statement.left.type === "VariableDeclaration") {
|
1191 | this.prewalkVariableDeclaration(statement.left);
|
1192 | }
|
1193 | this.prewalkStatement(statement.body);
|
1194 | }
|
1195 |
|
1196 | walkForOfStatement(statement) {
|
1197 | this.inBlockScope(() => {
|
1198 | if (statement.left.type === "VariableDeclaration") {
|
1199 | this.blockPrewalkVariableDeclaration(statement.left);
|
1200 | this.walkVariableDeclaration(statement.left);
|
1201 | } else {
|
1202 | this.walkPattern(statement.left);
|
1203 | }
|
1204 | this.walkExpression(statement.right);
|
1205 | const body = statement.body;
|
1206 | if (body.type === "BlockStatement") {
|
1207 |
|
1208 | this.blockPrewalkStatements(body.body);
|
1209 | this.walkStatements(body.body);
|
1210 | } else {
|
1211 | this.walkStatement(body);
|
1212 | }
|
1213 | });
|
1214 | }
|
1215 |
|
1216 |
|
1217 | prewalkFunctionDeclaration(statement) {
|
1218 | if (statement.id) {
|
1219 | this.scope.renames.set(statement.id.name, null);
|
1220 | this.scope.definitions.add(statement.id.name);
|
1221 | }
|
1222 | }
|
1223 |
|
1224 | walkFunctionDeclaration(statement) {
|
1225 | const wasTopLevel = this.scope.topLevelScope;
|
1226 | this.scope.topLevelScope = false;
|
1227 | this.inFunctionScope(true, statement.params, () => {
|
1228 | for (const param of statement.params) {
|
1229 | this.walkPattern(param);
|
1230 | }
|
1231 | if (statement.body.type === "BlockStatement") {
|
1232 | this.detectStrictMode(statement.body.body);
|
1233 | this.prewalkStatement(statement.body);
|
1234 | this.walkStatement(statement.body);
|
1235 | } else {
|
1236 | this.walkExpression(statement.body);
|
1237 | }
|
1238 | });
|
1239 | this.scope.topLevelScope = wasTopLevel;
|
1240 | }
|
1241 |
|
1242 | prewalkImportDeclaration(statement) {
|
1243 | const source = statement.source.value;
|
1244 | this.hooks.import.call(statement, source);
|
1245 | for (const specifier of statement.specifiers) {
|
1246 | const name = specifier.local.name;
|
1247 | this.scope.renames.set(name, null);
|
1248 | this.scope.definitions.add(name);
|
1249 | switch (specifier.type) {
|
1250 | case "ImportDefaultSpecifier":
|
1251 | this.hooks.importSpecifier.call(statement, source, "default", name);
|
1252 | break;
|
1253 | case "ImportSpecifier":
|
1254 | this.hooks.importSpecifier.call(
|
1255 | statement,
|
1256 | source,
|
1257 | specifier.imported.name,
|
1258 | name
|
1259 | );
|
1260 | break;
|
1261 | case "ImportNamespaceSpecifier":
|
1262 | this.hooks.importSpecifier.call(statement, source, null, name);
|
1263 | break;
|
1264 | }
|
1265 | }
|
1266 | }
|
1267 |
|
1268 | enterDeclaration(declaration, onIdent) {
|
1269 | switch (declaration.type) {
|
1270 | case "VariableDeclaration":
|
1271 | for (const declarator of declaration.declarations) {
|
1272 | switch (declarator.type) {
|
1273 | case "VariableDeclarator": {
|
1274 | this.enterPattern(declarator.id, onIdent);
|
1275 | break;
|
1276 | }
|
1277 | }
|
1278 | }
|
1279 | break;
|
1280 | case "FunctionDeclaration":
|
1281 | this.enterPattern(declaration.id, onIdent);
|
1282 | break;
|
1283 | case "ClassDeclaration":
|
1284 | this.enterPattern(declaration.id, onIdent);
|
1285 | break;
|
1286 | }
|
1287 | }
|
1288 |
|
1289 | blockPrewalkExportNamedDeclaration(statement) {
|
1290 | if (statement.declaration) {
|
1291 | this.blockPrewalkStatement(statement.declaration);
|
1292 | }
|
1293 | }
|
1294 |
|
1295 | prewalkExportNamedDeclaration(statement) {
|
1296 | let source;
|
1297 | if (statement.source) {
|
1298 | source = statement.source.value;
|
1299 | this.hooks.exportImport.call(statement, source);
|
1300 | } else {
|
1301 | this.hooks.export.call(statement);
|
1302 | }
|
1303 | if (statement.declaration) {
|
1304 | if (
|
1305 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
1306 | ) {
|
1307 | this.prewalkStatement(statement.declaration);
|
1308 | let index = 0;
|
1309 | this.enterDeclaration(statement.declaration, def => {
|
1310 | this.hooks.exportSpecifier.call(statement, def, def, index++);
|
1311 | });
|
1312 | }
|
1313 | }
|
1314 | if (statement.specifiers) {
|
1315 | for (
|
1316 | let specifierIndex = 0;
|
1317 | specifierIndex < statement.specifiers.length;
|
1318 | specifierIndex++
|
1319 | ) {
|
1320 | const specifier = statement.specifiers[specifierIndex];
|
1321 | switch (specifier.type) {
|
1322 | case "ExportSpecifier": {
|
1323 | const name = specifier.exported.name;
|
1324 | if (source) {
|
1325 | this.hooks.exportImportSpecifier.call(
|
1326 | statement,
|
1327 | source,
|
1328 | specifier.local.name,
|
1329 | name,
|
1330 | specifierIndex
|
1331 | );
|
1332 | } else {
|
1333 | this.hooks.exportSpecifier.call(
|
1334 | statement,
|
1335 | specifier.local.name,
|
1336 | name,
|
1337 | specifierIndex
|
1338 | );
|
1339 | }
|
1340 | break;
|
1341 | }
|
1342 | }
|
1343 | }
|
1344 | }
|
1345 | }
|
1346 |
|
1347 | walkExportNamedDeclaration(statement) {
|
1348 | if (statement.declaration) {
|
1349 | this.walkStatement(statement.declaration);
|
1350 | }
|
1351 | }
|
1352 |
|
1353 | blockPrewalkExportDefaultDeclaration(statement) {
|
1354 | if (statement.declaration.type === "ClassDeclaration") {
|
1355 | this.blockPrewalkClassDeclaration(statement.declaration);
|
1356 | }
|
1357 | }
|
1358 |
|
1359 | prewalkExportDefaultDeclaration(statement) {
|
1360 | this.prewalkStatement(statement.declaration);
|
1361 | if (
|
1362 | statement.declaration.id &&
|
1363 | statement.declaration.type !== "FunctionExpression" &&
|
1364 | statement.declaration.type !== "ClassExpression"
|
1365 | ) {
|
1366 | this.hooks.exportSpecifier.call(
|
1367 | statement,
|
1368 | statement.declaration.id.name,
|
1369 | "default"
|
1370 | );
|
1371 | }
|
1372 | }
|
1373 |
|
1374 | walkExportDefaultDeclaration(statement) {
|
1375 | this.hooks.export.call(statement);
|
1376 | if (
|
1377 | statement.declaration.id &&
|
1378 | statement.declaration.type !== "FunctionExpression" &&
|
1379 | statement.declaration.type !== "ClassExpression"
|
1380 | ) {
|
1381 | if (
|
1382 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
1383 | ) {
|
1384 | this.walkStatement(statement.declaration);
|
1385 | }
|
1386 | } else {
|
1387 |
|
1388 |
|
1389 |
|
1390 | if (statement.declaration.type === "FunctionDeclaration") {
|
1391 | this.walkFunctionDeclaration(statement.declaration);
|
1392 | } else if (statement.declaration.type === "ClassDeclaration") {
|
1393 | this.walkClassDeclaration(statement.declaration);
|
1394 | } else {
|
1395 | this.walkExpression(statement.declaration);
|
1396 | }
|
1397 | if (!this.hooks.exportExpression.call(statement, statement.declaration)) {
|
1398 | this.hooks.exportSpecifier.call(
|
1399 | statement,
|
1400 | statement.declaration,
|
1401 | "default"
|
1402 | );
|
1403 | }
|
1404 | }
|
1405 | }
|
1406 |
|
1407 | prewalkExportAllDeclaration(statement) {
|
1408 | const source = statement.source.value;
|
1409 | this.hooks.exportImport.call(statement, source);
|
1410 | this.hooks.exportImportSpecifier.call(statement, source, null, null, 0);
|
1411 | }
|
1412 |
|
1413 | prewalkVariableDeclaration(statement) {
|
1414 | if (statement.kind !== "var") return;
|
1415 | this._prewalkVariableDeclaration(statement, this.hooks.varDeclarationVar);
|
1416 | }
|
1417 |
|
1418 | blockPrewalkVariableDeclaration(statement) {
|
1419 | if (statement.kind === "var") return;
|
1420 | const hookMap =
|
1421 | statement.kind === "const"
|
1422 | ? this.hooks.varDeclarationConst
|
1423 | : this.hooks.varDeclarationLet;
|
1424 | this._prewalkVariableDeclaration(statement, hookMap);
|
1425 | }
|
1426 |
|
1427 | _prewalkVariableDeclaration(statement, hookMap) {
|
1428 | for (const declarator of statement.declarations) {
|
1429 | switch (declarator.type) {
|
1430 | case "VariableDeclarator": {
|
1431 | this.enterPattern(declarator.id, (name, decl) => {
|
1432 | let hook = hookMap.get(name);
|
1433 | if (hook === undefined || !hook.call(decl)) {
|
1434 | hook = this.hooks.varDeclaration.get(name);
|
1435 | if (hook === undefined || !hook.call(decl)) {
|
1436 | this.scope.renames.set(name, null);
|
1437 | this.scope.definitions.add(name);
|
1438 | }
|
1439 | }
|
1440 | });
|
1441 | break;
|
1442 | }
|
1443 | }
|
1444 | }
|
1445 | }
|
1446 |
|
1447 | walkVariableDeclaration(statement) {
|
1448 | for (const declarator of statement.declarations) {
|
1449 | switch (declarator.type) {
|
1450 | case "VariableDeclarator": {
|
1451 | const renameIdentifier =
|
1452 | declarator.init && this.getRenameIdentifier(declarator.init);
|
1453 | if (renameIdentifier && declarator.id.type === "Identifier") {
|
1454 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1455 | if (hook !== undefined && hook.call(declarator.init)) {
|
1456 |
|
1457 | const hook = this.hooks.rename.get(renameIdentifier);
|
1458 | if (hook === undefined || !hook.call(declarator.init)) {
|
1459 | this.scope.renames.set(
|
1460 | declarator.id.name,
|
1461 | this.scope.renames.get(renameIdentifier) || renameIdentifier
|
1462 | );
|
1463 | this.scope.definitions.delete(declarator.id.name);
|
1464 | }
|
1465 | break;
|
1466 | }
|
1467 | }
|
1468 | this.walkPattern(declarator.id);
|
1469 | if (declarator.init) this.walkExpression(declarator.init);
|
1470 | break;
|
1471 | }
|
1472 | }
|
1473 | }
|
1474 | }
|
1475 |
|
1476 | blockPrewalkClassDeclaration(statement) {
|
1477 | if (statement.id) {
|
1478 | this.scope.renames.set(statement.id.name, null);
|
1479 | this.scope.definitions.add(statement.id.name);
|
1480 | }
|
1481 | }
|
1482 |
|
1483 | walkClassDeclaration(statement) {
|
1484 | this.walkClass(statement);
|
1485 | }
|
1486 |
|
1487 | prewalkSwitchCases(switchCases) {
|
1488 | for (let index = 0, len = switchCases.length; index < len; index++) {
|
1489 | const switchCase = switchCases[index];
|
1490 | this.prewalkStatements(switchCase.consequent);
|
1491 | }
|
1492 | }
|
1493 |
|
1494 | walkSwitchCases(switchCases) {
|
1495 | for (let index = 0, len = switchCases.length; index < len; index++) {
|
1496 | const switchCase = switchCases[index];
|
1497 |
|
1498 | if (switchCase.test) {
|
1499 | this.walkExpression(switchCase.test);
|
1500 | }
|
1501 | this.walkStatements(switchCase.consequent);
|
1502 | }
|
1503 | }
|
1504 |
|
1505 | walkCatchClause(catchClause) {
|
1506 | this.inBlockScope(() => {
|
1507 |
|
1508 | if (catchClause.param !== null) {
|
1509 | this.enterPattern(catchClause.param, ident => {
|
1510 | this.scope.renames.set(ident, null);
|
1511 | this.scope.definitions.add(ident);
|
1512 | });
|
1513 | this.walkPattern(catchClause.param);
|
1514 | }
|
1515 | this.prewalkStatement(catchClause.body);
|
1516 | this.walkStatement(catchClause.body);
|
1517 | });
|
1518 | }
|
1519 |
|
1520 | walkPattern(pattern) {
|
1521 | switch (pattern.type) {
|
1522 | case "ArrayPattern":
|
1523 | this.walkArrayPattern(pattern);
|
1524 | break;
|
1525 | case "AssignmentPattern":
|
1526 | this.walkAssignmentPattern(pattern);
|
1527 | break;
|
1528 | case "MemberExpression":
|
1529 | this.walkMemberExpression(pattern);
|
1530 | break;
|
1531 | case "ObjectPattern":
|
1532 | this.walkObjectPattern(pattern);
|
1533 | break;
|
1534 | case "RestElement":
|
1535 | this.walkRestElement(pattern);
|
1536 | break;
|
1537 | }
|
1538 | }
|
1539 |
|
1540 | walkAssignmentPattern(pattern) {
|
1541 | this.walkExpression(pattern.right);
|
1542 | this.walkPattern(pattern.left);
|
1543 | }
|
1544 |
|
1545 | walkObjectPattern(pattern) {
|
1546 | for (let i = 0, len = pattern.properties.length; i < len; i++) {
|
1547 | const prop = pattern.properties[i];
|
1548 | if (prop) {
|
1549 | if (prop.computed) this.walkExpression(prop.key);
|
1550 | if (prop.value) this.walkPattern(prop.value);
|
1551 | }
|
1552 | }
|
1553 | }
|
1554 |
|
1555 | walkArrayPattern(pattern) {
|
1556 | for (let i = 0, len = pattern.elements.length; i < len; i++) {
|
1557 | const element = pattern.elements[i];
|
1558 | if (element) this.walkPattern(element);
|
1559 | }
|
1560 | }
|
1561 |
|
1562 | walkRestElement(pattern) {
|
1563 | this.walkPattern(pattern.argument);
|
1564 | }
|
1565 |
|
1566 | walkExpressions(expressions) {
|
1567 | for (const expression of expressions) {
|
1568 | if (expression) {
|
1569 | this.walkExpression(expression);
|
1570 | }
|
1571 | }
|
1572 | }
|
1573 |
|
1574 | walkExpression(expression) {
|
1575 | switch (expression.type) {
|
1576 | case "ArrayExpression":
|
1577 | this.walkArrayExpression(expression);
|
1578 | break;
|
1579 | case "ArrowFunctionExpression":
|
1580 | this.walkArrowFunctionExpression(expression);
|
1581 | break;
|
1582 | case "AssignmentExpression":
|
1583 | this.walkAssignmentExpression(expression);
|
1584 | break;
|
1585 | case "AwaitExpression":
|
1586 | this.walkAwaitExpression(expression);
|
1587 | break;
|
1588 | case "BinaryExpression":
|
1589 | this.walkBinaryExpression(expression);
|
1590 | break;
|
1591 | case "CallExpression":
|
1592 | this.walkCallExpression(expression);
|
1593 | break;
|
1594 | case "ClassExpression":
|
1595 | this.walkClassExpression(expression);
|
1596 | break;
|
1597 | case "ConditionalExpression":
|
1598 | this.walkConditionalExpression(expression);
|
1599 | break;
|
1600 | case "FunctionExpression":
|
1601 | this.walkFunctionExpression(expression);
|
1602 | break;
|
1603 | case "Identifier":
|
1604 | this.walkIdentifier(expression);
|
1605 | break;
|
1606 | case "LogicalExpression":
|
1607 | this.walkLogicalExpression(expression);
|
1608 | break;
|
1609 | case "MemberExpression":
|
1610 | this.walkMemberExpression(expression);
|
1611 | break;
|
1612 | case "NewExpression":
|
1613 | this.walkNewExpression(expression);
|
1614 | break;
|
1615 | case "ObjectExpression":
|
1616 | this.walkObjectExpression(expression);
|
1617 | break;
|
1618 | case "SequenceExpression":
|
1619 | this.walkSequenceExpression(expression);
|
1620 | break;
|
1621 | case "SpreadElement":
|
1622 | this.walkSpreadElement(expression);
|
1623 | break;
|
1624 | case "TaggedTemplateExpression":
|
1625 | this.walkTaggedTemplateExpression(expression);
|
1626 | break;
|
1627 | case "TemplateLiteral":
|
1628 | this.walkTemplateLiteral(expression);
|
1629 | break;
|
1630 | case "ThisExpression":
|
1631 | this.walkThisExpression(expression);
|
1632 | break;
|
1633 | case "UnaryExpression":
|
1634 | this.walkUnaryExpression(expression);
|
1635 | break;
|
1636 | case "UpdateExpression":
|
1637 | this.walkUpdateExpression(expression);
|
1638 | break;
|
1639 | case "YieldExpression":
|
1640 | this.walkYieldExpression(expression);
|
1641 | break;
|
1642 | }
|
1643 | }
|
1644 |
|
1645 | walkAwaitExpression(expression) {
|
1646 | this.walkExpression(expression.argument);
|
1647 | }
|
1648 |
|
1649 | walkArrayExpression(expression) {
|
1650 | if (expression.elements) {
|
1651 | this.walkExpressions(expression.elements);
|
1652 | }
|
1653 | }
|
1654 |
|
1655 | walkSpreadElement(expression) {
|
1656 | if (expression.argument) {
|
1657 | this.walkExpression(expression.argument);
|
1658 | }
|
1659 | }
|
1660 |
|
1661 | walkObjectExpression(expression) {
|
1662 | for (
|
1663 | let propIndex = 0, len = expression.properties.length;
|
1664 | propIndex < len;
|
1665 | propIndex++
|
1666 | ) {
|
1667 | const prop = expression.properties[propIndex];
|
1668 | if (prop.type === "SpreadElement") {
|
1669 | this.walkExpression(prop.argument);
|
1670 | continue;
|
1671 | }
|
1672 | if (prop.computed) {
|
1673 | this.walkExpression(prop.key);
|
1674 | }
|
1675 | if (prop.shorthand) {
|
1676 | this.scope.inShorthand = true;
|
1677 | }
|
1678 | this.walkExpression(prop.value);
|
1679 | if (prop.shorthand) {
|
1680 | this.scope.inShorthand = false;
|
1681 | }
|
1682 | }
|
1683 | }
|
1684 |
|
1685 | walkFunctionExpression(expression) {
|
1686 | const wasTopLevel = this.scope.topLevelScope;
|
1687 | this.scope.topLevelScope = false;
|
1688 | const scopeParams = expression.params;
|
1689 |
|
1690 |
|
1691 | if (expression.id) {
|
1692 | scopeParams.push(expression.id.name);
|
1693 | }
|
1694 |
|
1695 | this.inFunctionScope(true, scopeParams, () => {
|
1696 | for (const param of expression.params) {
|
1697 | this.walkPattern(param);
|
1698 | }
|
1699 | if (expression.body.type === "BlockStatement") {
|
1700 | this.detectStrictMode(expression.body.body);
|
1701 | this.prewalkStatement(expression.body);
|
1702 | this.walkStatement(expression.body);
|
1703 | } else {
|
1704 | this.walkExpression(expression.body);
|
1705 | }
|
1706 | });
|
1707 | this.scope.topLevelScope = wasTopLevel;
|
1708 | }
|
1709 |
|
1710 | walkArrowFunctionExpression(expression) {
|
1711 | this.inFunctionScope(false, expression.params, () => {
|
1712 | for (const param of expression.params) {
|
1713 | this.walkPattern(param);
|
1714 | }
|
1715 | if (expression.body.type === "BlockStatement") {
|
1716 | this.detectStrictMode(expression.body.body);
|
1717 | this.prewalkStatement(expression.body);
|
1718 | this.walkStatement(expression.body);
|
1719 | } else {
|
1720 | this.walkExpression(expression.body);
|
1721 | }
|
1722 | });
|
1723 | }
|
1724 |
|
1725 | walkSequenceExpression(expression) {
|
1726 | if (expression.expressions) this.walkExpressions(expression.expressions);
|
1727 | }
|
1728 |
|
1729 | walkUpdateExpression(expression) {
|
1730 | this.walkExpression(expression.argument);
|
1731 | }
|
1732 |
|
1733 | walkUnaryExpression(expression) {
|
1734 | if (expression.operator === "typeof") {
|
1735 | const exprName = this.getNameForExpression(expression.argument);
|
1736 | if (exprName && exprName.free) {
|
1737 | const hook = this.hooks.typeof.get(exprName.name);
|
1738 | if (hook !== undefined) {
|
1739 | const result = hook.call(expression);
|
1740 | if (result === true) return;
|
1741 | }
|
1742 | }
|
1743 | }
|
1744 | this.walkExpression(expression.argument);
|
1745 | }
|
1746 |
|
1747 | walkLeftRightExpression(expression) {
|
1748 | this.walkExpression(expression.left);
|
1749 | this.walkExpression(expression.right);
|
1750 | }
|
1751 |
|
1752 | walkBinaryExpression(expression) {
|
1753 | this.walkLeftRightExpression(expression);
|
1754 | }
|
1755 |
|
1756 | walkLogicalExpression(expression) {
|
1757 | const result = this.hooks.expressionLogicalOperator.call(expression);
|
1758 | if (result === undefined) {
|
1759 | this.walkLeftRightExpression(expression);
|
1760 | } else {
|
1761 | if (result) {
|
1762 | this.walkExpression(expression.right);
|
1763 | }
|
1764 | }
|
1765 | }
|
1766 |
|
1767 | walkAssignmentExpression(expression) {
|
1768 | const renameIdentifier = this.getRenameIdentifier(expression.right);
|
1769 | if (expression.left.type === "Identifier" && renameIdentifier) {
|
1770 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1771 | if (hook !== undefined && hook.call(expression.right)) {
|
1772 |
|
1773 | const hook = this.hooks.rename.get(renameIdentifier);
|
1774 | if (hook === undefined || !hook.call(expression.right)) {
|
1775 | this.scope.renames.set(expression.left.name, renameIdentifier);
|
1776 | this.scope.definitions.delete(expression.left.name);
|
1777 | }
|
1778 | return;
|
1779 | }
|
1780 | }
|
1781 | if (expression.left.type === "Identifier") {
|
1782 | const assignedHook = this.hooks.assigned.get(expression.left.name);
|
1783 | if (assignedHook === undefined || !assignedHook.call(expression)) {
|
1784 | this.walkExpression(expression.right);
|
1785 | }
|
1786 | this.scope.renames.set(expression.left.name, null);
|
1787 | const assignHook = this.hooks.assign.get(expression.left.name);
|
1788 | if (assignHook === undefined || !assignHook.call(expression)) {
|
1789 | this.walkExpression(expression.left);
|
1790 | }
|
1791 | return;
|
1792 | }
|
1793 | this.walkExpression(expression.right);
|
1794 | this.walkPattern(expression.left);
|
1795 | this.enterPattern(expression.left, (name, decl) => {
|
1796 | this.scope.renames.set(name, null);
|
1797 | });
|
1798 | }
|
1799 |
|
1800 | walkConditionalExpression(expression) {
|
1801 | const result = this.hooks.expressionConditionalOperator.call(expression);
|
1802 | if (result === undefined) {
|
1803 | this.walkExpression(expression.test);
|
1804 | this.walkExpression(expression.consequent);
|
1805 | if (expression.alternate) {
|
1806 | this.walkExpression(expression.alternate);
|
1807 | }
|
1808 | } else {
|
1809 | if (result) {
|
1810 | this.walkExpression(expression.consequent);
|
1811 | } else if (expression.alternate) {
|
1812 | this.walkExpression(expression.alternate);
|
1813 | }
|
1814 | }
|
1815 | }
|
1816 |
|
1817 | walkNewExpression(expression) {
|
1818 | const callee = this.evaluateExpression(expression.callee);
|
1819 | if (callee.isIdentifier()) {
|
1820 | const hook = this.hooks.new.get(callee.identifier);
|
1821 | if (hook !== undefined) {
|
1822 | const result = hook.call(expression);
|
1823 | if (result === true) {
|
1824 | return;
|
1825 | }
|
1826 | }
|
1827 | }
|
1828 |
|
1829 | this.walkExpression(expression.callee);
|
1830 | if (expression.arguments) {
|
1831 | this.walkExpressions(expression.arguments);
|
1832 | }
|
1833 | }
|
1834 |
|
1835 | walkYieldExpression(expression) {
|
1836 | if (expression.argument) {
|
1837 | this.walkExpression(expression.argument);
|
1838 | }
|
1839 | }
|
1840 |
|
1841 | walkTemplateLiteral(expression) {
|
1842 | if (expression.expressions) {
|
1843 | this.walkExpressions(expression.expressions);
|
1844 | }
|
1845 | }
|
1846 |
|
1847 | walkTaggedTemplateExpression(expression) {
|
1848 | if (expression.tag) {
|
1849 | this.walkExpression(expression.tag);
|
1850 | }
|
1851 | if (expression.quasi && expression.quasi.expressions) {
|
1852 | this.walkExpressions(expression.quasi.expressions);
|
1853 | }
|
1854 | }
|
1855 |
|
1856 | walkClassExpression(expression) {
|
1857 | this.walkClass(expression);
|
1858 | }
|
1859 |
|
1860 | _walkIIFE(functionExpression, options, currentThis) {
|
1861 | const renameArgOrThis = argOrThis => {
|
1862 | const renameIdentifier = this.getRenameIdentifier(argOrThis);
|
1863 | if (renameIdentifier) {
|
1864 | const hook = this.hooks.canRename.get(renameIdentifier);
|
1865 | if (hook !== undefined && hook.call(argOrThis)) {
|
1866 | const hook = this.hooks.rename.get(renameIdentifier);
|
1867 | if (hook === undefined || !hook.call(argOrThis)) {
|
1868 | return renameIdentifier;
|
1869 | }
|
1870 | }
|
1871 | }
|
1872 | this.walkExpression(argOrThis);
|
1873 | };
|
1874 | const params = functionExpression.params;
|
1875 | const renameThis = currentThis ? renameArgOrThis(currentThis) : null;
|
1876 | const args = options.map(renameArgOrThis);
|
1877 | const wasTopLevel = this.scope.topLevelScope;
|
1878 | this.scope.topLevelScope = false;
|
1879 | const scopeParams = params.filter((identifier, idx) => !args[idx]);
|
1880 |
|
1881 |
|
1882 | if (functionExpression.id) {
|
1883 | scopeParams.push(functionExpression.id.name);
|
1884 | }
|
1885 |
|
1886 | this.inFunctionScope(true, scopeParams, () => {
|
1887 | if (renameThis) {
|
1888 | this.scope.renames.set("this", renameThis);
|
1889 | }
|
1890 | for (let i = 0; i < args.length; i++) {
|
1891 | const param = args[i];
|
1892 | if (!param) continue;
|
1893 | if (!params[i] || params[i].type !== "Identifier") continue;
|
1894 | this.scope.renames.set(params[i].name, param);
|
1895 | }
|
1896 | if (functionExpression.body.type === "BlockStatement") {
|
1897 | this.prewalkStatement(functionExpression.body);
|
1898 | this.walkStatement(functionExpression.body);
|
1899 | } else {
|
1900 | this.walkExpression(functionExpression.body);
|
1901 | }
|
1902 | });
|
1903 | this.scope.topLevelScope = wasTopLevel;
|
1904 | }
|
1905 |
|
1906 | walkCallExpression(expression) {
|
1907 | if (
|
1908 | expression.callee.type === "MemberExpression" &&
|
1909 | expression.callee.object.type === "FunctionExpression" &&
|
1910 | !expression.callee.computed &&
|
1911 | (expression.callee.property.name === "call" ||
|
1912 | expression.callee.property.name === "bind") &&
|
1913 | expression.arguments.length > 0
|
1914 | ) {
|
1915 |
|
1916 | this._walkIIFE(
|
1917 | expression.callee.object,
|
1918 | expression.arguments.slice(1),
|
1919 | expression.arguments[0]
|
1920 | );
|
1921 | } else if (expression.callee.type === "FunctionExpression") {
|
1922 |
|
1923 | this._walkIIFE(expression.callee, expression.arguments, null);
|
1924 | } else if (expression.callee.type === "Import") {
|
1925 | let result = this.hooks.importCall.call(expression);
|
1926 | if (result === true) return;
|
1927 |
|
1928 | if (expression.arguments) this.walkExpressions(expression.arguments);
|
1929 | } else {
|
1930 | const callee = this.evaluateExpression(expression.callee);
|
1931 | if (callee.isIdentifier()) {
|
1932 | const callHook = this.hooks.call.get(callee.identifier);
|
1933 | if (callHook !== undefined) {
|
1934 | let result = callHook.call(expression);
|
1935 | if (result === true) return;
|
1936 | }
|
1937 | let identifier = callee.identifier.replace(/\.[^.]+$/, "");
|
1938 | if (identifier !== callee.identifier) {
|
1939 | const callAnyHook = this.hooks.callAnyMember.get(identifier);
|
1940 | if (callAnyHook !== undefined) {
|
1941 | let result = callAnyHook.call(expression);
|
1942 | if (result === true) return;
|
1943 | }
|
1944 | }
|
1945 | }
|
1946 |
|
1947 | if (expression.callee) this.walkExpression(expression.callee);
|
1948 | if (expression.arguments) this.walkExpressions(expression.arguments);
|
1949 | }
|
1950 | }
|
1951 |
|
1952 | walkMemberExpression(expression) {
|
1953 | const exprName = this.getNameForExpression(expression);
|
1954 | if (exprName && exprName.free) {
|
1955 | const expressionHook = this.hooks.expression.get(exprName.name);
|
1956 | if (expressionHook !== undefined) {
|
1957 | const result = expressionHook.call(expression);
|
1958 | if (result === true) return;
|
1959 | }
|
1960 | const expressionAnyMemberHook = this.hooks.expressionAnyMember.get(
|
1961 | exprName.nameGeneral
|
1962 | );
|
1963 | if (expressionAnyMemberHook !== undefined) {
|
1964 | const result = expressionAnyMemberHook.call(expression);
|
1965 | if (result === true) return;
|
1966 | }
|
1967 | }
|
1968 | this.walkExpression(expression.object);
|
1969 | if (expression.computed === true) this.walkExpression(expression.property);
|
1970 | }
|
1971 |
|
1972 | walkThisExpression(expression) {
|
1973 | const expressionHook = this.hooks.expression.get("this");
|
1974 | if (expressionHook !== undefined) {
|
1975 | expressionHook.call(expression);
|
1976 | }
|
1977 | }
|
1978 |
|
1979 | walkIdentifier(expression) {
|
1980 | if (!this.scope.definitions.has(expression.name)) {
|
1981 | const hook = this.hooks.expression.get(
|
1982 | this.scope.renames.get(expression.name) || expression.name
|
1983 | );
|
1984 | if (hook !== undefined) {
|
1985 | const result = hook.call(expression);
|
1986 | if (result === true) return;
|
1987 | }
|
1988 | }
|
1989 | }
|
1990 |
|
1991 | |
1992 |
|
1993 |
|
1994 |
|
1995 |
|
1996 |
|
1997 | inScope(params, fn) {
|
1998 | const oldScope = this.scope;
|
1999 | this.scope = {
|
2000 | topLevelScope: oldScope.topLevelScope,
|
2001 | inTry: false,
|
2002 | inShorthand: false,
|
2003 | isStrict: oldScope.isStrict,
|
2004 | definitions: oldScope.definitions.createChild(),
|
2005 | renames: oldScope.renames.createChild()
|
2006 | };
|
2007 |
|
2008 | this.scope.renames.set("this", null);
|
2009 |
|
2010 | this.enterPatterns(params, ident => {
|
2011 | this.scope.renames.set(ident, null);
|
2012 | this.scope.definitions.add(ident);
|
2013 | });
|
2014 |
|
2015 | fn();
|
2016 |
|
2017 | this.scope = oldScope;
|
2018 | }
|
2019 |
|
2020 | inFunctionScope(hasThis, params, fn) {
|
2021 | const oldScope = this.scope;
|
2022 | this.scope = {
|
2023 | topLevelScope: oldScope.topLevelScope,
|
2024 | inTry: false,
|
2025 | inShorthand: false,
|
2026 | isStrict: oldScope.isStrict,
|
2027 | definitions: oldScope.definitions.createChild(),
|
2028 | renames: oldScope.renames.createChild()
|
2029 | };
|
2030 |
|
2031 | if (hasThis) {
|
2032 | this.scope.renames.set("this", null);
|
2033 | }
|
2034 |
|
2035 | this.enterPatterns(params, ident => {
|
2036 | this.scope.renames.set(ident, null);
|
2037 | this.scope.definitions.add(ident);
|
2038 | });
|
2039 |
|
2040 | fn();
|
2041 |
|
2042 | this.scope = oldScope;
|
2043 | }
|
2044 |
|
2045 | inBlockScope(fn) {
|
2046 | const oldScope = this.scope;
|
2047 | this.scope = {
|
2048 | topLevelScope: oldScope.topLevelScope,
|
2049 | inTry: oldScope.inTry,
|
2050 | inShorthand: false,
|
2051 | isStrict: oldScope.isStrict,
|
2052 | definitions: oldScope.definitions.createChild(),
|
2053 | renames: oldScope.renames.createChild()
|
2054 | };
|
2055 |
|
2056 | fn();
|
2057 |
|
2058 | this.scope = oldScope;
|
2059 | }
|
2060 |
|
2061 | detectStrictMode(statements) {
|
2062 | const isStrict =
|
2063 | statements.length >= 1 &&
|
2064 | statements[0].type === "ExpressionStatement" &&
|
2065 | statements[0].expression.type === "Literal" &&
|
2066 | statements[0].expression.value === "use strict";
|
2067 | if (isStrict) {
|
2068 | this.scope.isStrict = true;
|
2069 | }
|
2070 | }
|
2071 |
|
2072 | enterPatterns(patterns, onIdent) {
|
2073 | for (const pattern of patterns) {
|
2074 | if (typeof pattern !== "string") {
|
2075 | this.enterPattern(pattern, onIdent);
|
2076 | } else if (pattern) {
|
2077 | onIdent(pattern);
|
2078 | }
|
2079 | }
|
2080 | }
|
2081 |
|
2082 | enterPattern(pattern, onIdent) {
|
2083 | if (!pattern) return;
|
2084 | switch (pattern.type) {
|
2085 | case "ArrayPattern":
|
2086 | this.enterArrayPattern(pattern, onIdent);
|
2087 | break;
|
2088 | case "AssignmentPattern":
|
2089 | this.enterAssignmentPattern(pattern, onIdent);
|
2090 | break;
|
2091 | case "Identifier":
|
2092 | this.enterIdentifier(pattern, onIdent);
|
2093 | break;
|
2094 | case "ObjectPattern":
|
2095 | this.enterObjectPattern(pattern, onIdent);
|
2096 | break;
|
2097 | case "RestElement":
|
2098 | this.enterRestElement(pattern, onIdent);
|
2099 | break;
|
2100 | case "Property":
|
2101 | this.enterPattern(pattern.value, onIdent);
|
2102 | break;
|
2103 | }
|
2104 | }
|
2105 |
|
2106 | enterIdentifier(pattern, onIdent) {
|
2107 | onIdent(pattern.name, pattern);
|
2108 | }
|
2109 |
|
2110 | enterObjectPattern(pattern, onIdent) {
|
2111 | for (
|
2112 | let propIndex = 0, len = pattern.properties.length;
|
2113 | propIndex < len;
|
2114 | propIndex++
|
2115 | ) {
|
2116 | const prop = pattern.properties[propIndex];
|
2117 | this.enterPattern(prop, onIdent);
|
2118 | }
|
2119 | }
|
2120 |
|
2121 | enterArrayPattern(pattern, onIdent) {
|
2122 | for (
|
2123 | let elementIndex = 0, len = pattern.elements.length;
|
2124 | elementIndex < len;
|
2125 | elementIndex++
|
2126 | ) {
|
2127 | const element = pattern.elements[elementIndex];
|
2128 | this.enterPattern(element, onIdent);
|
2129 | }
|
2130 | }
|
2131 |
|
2132 | enterRestElement(pattern, onIdent) {
|
2133 | this.enterPattern(pattern.argument, onIdent);
|
2134 | }
|
2135 |
|
2136 | enterAssignmentPattern(pattern, onIdent) {
|
2137 | this.enterPattern(pattern.left, onIdent);
|
2138 | }
|
2139 |
|
2140 | evaluateExpression(expression) {
|
2141 | try {
|
2142 | const hook = this.hooks.evaluate.get(expression.type);
|
2143 | if (hook !== undefined) {
|
2144 | const result = hook.call(expression);
|
2145 | if (result !== undefined) {
|
2146 | if (result) {
|
2147 | result.setExpression(expression);
|
2148 | }
|
2149 | return result;
|
2150 | }
|
2151 | }
|
2152 | } catch (e) {
|
2153 | console.warn(e);
|
2154 |
|
2155 | }
|
2156 | return new BasicEvaluatedExpression()
|
2157 | .setRange(expression.range)
|
2158 | .setExpression(expression);
|
2159 | }
|
2160 |
|
2161 | parseString(expression) {
|
2162 | switch (expression.type) {
|
2163 | case "BinaryExpression":
|
2164 | if (expression.operator === "+") {
|
2165 | return (
|
2166 | this.parseString(expression.left) +
|
2167 | this.parseString(expression.right)
|
2168 | );
|
2169 | }
|
2170 | break;
|
2171 | case "Literal":
|
2172 | return expression.value + "";
|
2173 | }
|
2174 | throw new Error(
|
2175 | expression.type + " is not supported as parameter for require"
|
2176 | );
|
2177 | }
|
2178 |
|
2179 | parseCalculatedString(expression) {
|
2180 | switch (expression.type) {
|
2181 | case "BinaryExpression":
|
2182 | if (expression.operator === "+") {
|
2183 | const left = this.parseCalculatedString(expression.left);
|
2184 | const right = this.parseCalculatedString(expression.right);
|
2185 | if (left.code) {
|
2186 | return {
|
2187 | range: left.range,
|
2188 | value: left.value,
|
2189 | code: true,
|
2190 | conditional: false
|
2191 | };
|
2192 | } else if (right.code) {
|
2193 | return {
|
2194 | range: [
|
2195 | left.range[0],
|
2196 | right.range ? right.range[1] : left.range[1]
|
2197 | ],
|
2198 | value: left.value + right.value,
|
2199 | code: true,
|
2200 | conditional: false
|
2201 | };
|
2202 | } else {
|
2203 | return {
|
2204 | range: [left.range[0], right.range[1]],
|
2205 | value: left.value + right.value,
|
2206 | code: false,
|
2207 | conditional: false
|
2208 | };
|
2209 | }
|
2210 | }
|
2211 | break;
|
2212 | case "ConditionalExpression": {
|
2213 | const consequent = this.parseCalculatedString(expression.consequent);
|
2214 | const alternate = this.parseCalculatedString(expression.alternate);
|
2215 | const items = [];
|
2216 | if (consequent.conditional) {
|
2217 | items.push(...consequent.conditional);
|
2218 | } else if (!consequent.code) {
|
2219 | items.push(consequent);
|
2220 | } else {
|
2221 | break;
|
2222 | }
|
2223 | if (alternate.conditional) {
|
2224 | items.push(...alternate.conditional);
|
2225 | } else if (!alternate.code) {
|
2226 | items.push(alternate);
|
2227 | } else {
|
2228 | break;
|
2229 | }
|
2230 | return {
|
2231 | range: undefined,
|
2232 | value: "",
|
2233 | code: true,
|
2234 | conditional: items
|
2235 | };
|
2236 | }
|
2237 | case "Literal":
|
2238 | return {
|
2239 | range: expression.range,
|
2240 | value: expression.value + "",
|
2241 | code: false,
|
2242 | conditional: false
|
2243 | };
|
2244 | }
|
2245 | return {
|
2246 | range: undefined,
|
2247 | value: "",
|
2248 | code: true,
|
2249 | conditional: false
|
2250 | };
|
2251 | }
|
2252 |
|
2253 | parse(source, initialState) {
|
2254 | let ast;
|
2255 | let comments;
|
2256 | if (typeof source === "object" && source !== null) {
|
2257 | ast = source;
|
2258 | comments = source.comments;
|
2259 | } else {
|
2260 | comments = [];
|
2261 | ast = Parser.parse(source, {
|
2262 | sourceType: this.sourceType,
|
2263 | onComment: comments
|
2264 | });
|
2265 | }
|
2266 |
|
2267 | const oldScope = this.scope;
|
2268 | const oldState = this.state;
|
2269 | const oldComments = this.comments;
|
2270 | this.scope = {
|
2271 | topLevelScope: true,
|
2272 | inTry: false,
|
2273 | inShorthand: false,
|
2274 | isStrict: false,
|
2275 | definitions: new StackedSetMap(),
|
2276 | renames: new StackedSetMap()
|
2277 | };
|
2278 | const state = (this.state = initialState || {});
|
2279 | this.comments = comments;
|
2280 | if (this.hooks.program.call(ast, comments) === undefined) {
|
2281 | this.detectStrictMode(ast.body);
|
2282 | this.prewalkStatements(ast.body);
|
2283 | this.blockPrewalkStatements(ast.body);
|
2284 | this.walkStatements(ast.body);
|
2285 | }
|
2286 | this.scope = oldScope;
|
2287 | this.state = oldState;
|
2288 | this.comments = oldComments;
|
2289 | return state;
|
2290 | }
|
2291 |
|
2292 | evaluate(source) {
|
2293 | const ast = Parser.parse("(" + source + ")", {
|
2294 | sourceType: this.sourceType,
|
2295 | locations: false
|
2296 | });
|
2297 |
|
2298 |
|
2299 | if (ast.body.length !== 1 || ast.body[0].type !== "ExpressionStatement") {
|
2300 | throw new Error("evaluate: Source is not a expression");
|
2301 | }
|
2302 |
|
2303 |
|
2304 | return this.evaluateExpression(ast.body[0].expression);
|
2305 | }
|
2306 |
|
2307 | getComments(range) {
|
2308 | return this.comments.filter(
|
2309 | comment => comment.range[0] >= range[0] && comment.range[1] <= range[1]
|
2310 | );
|
2311 | }
|
2312 |
|
2313 | parseCommentOptions(range) {
|
2314 | const comments = this.getComments(range);
|
2315 | if (comments.length === 0) {
|
2316 | return EMPTY_COMMENT_OPTIONS;
|
2317 | }
|
2318 | let options = {};
|
2319 | let errors = [];
|
2320 | for (const comment of comments) {
|
2321 | const { value } = comment;
|
2322 | if (value && webpackCommentRegExp.test(value)) {
|
2323 |
|
2324 | try {
|
2325 | const val = vm.runInNewContext(`(function(){return {${value}};})()`);
|
2326 | Object.assign(options, val);
|
2327 | } catch (e) {
|
2328 | e.comment = comment;
|
2329 | errors.push(e);
|
2330 | }
|
2331 | }
|
2332 | }
|
2333 | return { options, errors };
|
2334 | }
|
2335 |
|
2336 | getNameForExpression(expression) {
|
2337 | let expr = expression;
|
2338 | const exprName = [];
|
2339 | while (
|
2340 | expr.type === "MemberExpression" &&
|
2341 | expr.property.type === (expr.computed ? "Literal" : "Identifier")
|
2342 | ) {
|
2343 | exprName.push(expr.computed ? expr.property.value : expr.property.name);
|
2344 | expr = expr.object;
|
2345 | }
|
2346 | let free;
|
2347 | if (expr.type === "Identifier") {
|
2348 | free = !this.scope.definitions.has(expr.name);
|
2349 | exprName.push(this.scope.renames.get(expr.name) || expr.name);
|
2350 | } else if (
|
2351 | expr.type === "ThisExpression" &&
|
2352 | this.scope.renames.get("this")
|
2353 | ) {
|
2354 | free = true;
|
2355 | exprName.push(this.scope.renames.get("this"));
|
2356 | } else if (expr.type === "ThisExpression") {
|
2357 | free = this.scope.topLevelScope;
|
2358 | exprName.push("this");
|
2359 | } else {
|
2360 | return null;
|
2361 | }
|
2362 | let prefix = "";
|
2363 | for (let i = exprName.length - 1; i >= 2; i--) {
|
2364 | prefix += exprName[i] + ".";
|
2365 | }
|
2366 | if (exprName.length > 1) {
|
2367 | prefix += exprName[1];
|
2368 | }
|
2369 | const name = prefix ? prefix + "." + exprName[0] : exprName[0];
|
2370 | const nameGeneral = prefix;
|
2371 | return {
|
2372 | name,
|
2373 | nameGeneral,
|
2374 | free
|
2375 | };
|
2376 | }
|
2377 |
|
2378 | static parse(code, options) {
|
2379 | const type = options ? options.sourceType : "module";
|
2380 | const parserOptions = Object.assign(
|
2381 | Object.create(null),
|
2382 | defaultParserOptions,
|
2383 | options
|
2384 | );
|
2385 |
|
2386 | if (type === "auto") {
|
2387 | parserOptions.sourceType = "module";
|
2388 | } else if (parserOptions.sourceType === "script") {
|
2389 | parserOptions.allowReturnOutsideFunction = true;
|
2390 | }
|
2391 |
|
2392 | let ast;
|
2393 | let error;
|
2394 | let threw = false;
|
2395 | try {
|
2396 | ast = acornParser.parse(code, parserOptions);
|
2397 | } catch (e) {
|
2398 | error = e;
|
2399 | threw = true;
|
2400 | }
|
2401 |
|
2402 | if (threw && type === "auto") {
|
2403 | parserOptions.sourceType = "script";
|
2404 | parserOptions.allowReturnOutsideFunction = true;
|
2405 | if (Array.isArray(parserOptions.onComment)) {
|
2406 | parserOptions.onComment.length = 0;
|
2407 | }
|
2408 | try {
|
2409 | ast = acornParser.parse(code, parserOptions);
|
2410 | threw = false;
|
2411 | } catch (e) {
|
2412 | threw = true;
|
2413 | }
|
2414 | }
|
2415 |
|
2416 | if (threw) {
|
2417 | throw error;
|
2418 | }
|
2419 |
|
2420 | return ast;
|
2421 | }
|
2422 | }
|
2423 |
|
2424 |
|
2425 | Object.defineProperty(Parser.prototype, "getCommentOptions", {
|
2426 | configurable: false,
|
2427 | value: util.deprecate(
|
2428 | |
2429 |
|
2430 |
|
2431 |
|
2432 |
|
2433 |
|
2434 | function(range) {
|
2435 | return this.parseCommentOptions(range).options;
|
2436 | },
|
2437 | "Parser.getCommentOptions: Use Parser.parseCommentOptions(range) instead"
|
2438 | )
|
2439 | });
|
2440 |
|
2441 | module.exports = Parser;
|