| [6a3a178] | 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | const { Parser: AcornParser } = require("acorn");
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| 9 | const { importAssertions } = require("acorn-import-assertions");
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| 10 | const { SyncBailHook, HookMap } = require("tapable");
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| 11 | const vm = require("vm");
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| 12 | const Parser = require("../Parser");
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| 13 | const StackedMap = require("../util/StackedMap");
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| 14 | const binarySearchBounds = require("../util/binarySearchBounds");
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| 15 | const memoize = require("../util/memoize");
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| 16 | const BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
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| 17 |
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| 18 | /** @typedef {import("acorn").Options} AcornOptions */
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| 19 | /** @typedef {import("estree").ArrayExpression} ArrayExpressionNode */
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| 20 | /** @typedef {import("estree").BinaryExpression} BinaryExpressionNode */
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| 21 | /** @typedef {import("estree").BlockStatement} BlockStatementNode */
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| 22 | /** @typedef {import("estree").SequenceExpression} SequenceExpressionNode */
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| 23 | /** @typedef {import("estree").CallExpression} CallExpressionNode */
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| 24 | /** @typedef {import("estree").ClassDeclaration} ClassDeclarationNode */
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| 25 | /** @typedef {import("estree").ClassExpression} ClassExpressionNode */
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| 26 | /** @typedef {import("estree").Comment} CommentNode */
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| 27 | /** @typedef {import("estree").ConditionalExpression} ConditionalExpressionNode */
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| 28 | /** @typedef {import("estree").Declaration} DeclarationNode */
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| 29 | /** @typedef {import("estree").PrivateIdentifier} PrivateIdentifierNode */
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| 30 | /** @typedef {import("estree").PropertyDefinition} PropertyDefinitionNode */
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| 31 | /** @typedef {import("estree").Expression} ExpressionNode */
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| 32 | /** @typedef {import("estree").Identifier} IdentifierNode */
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| 33 | /** @typedef {import("estree").IfStatement} IfStatementNode */
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| 34 | /** @typedef {import("estree").LabeledStatement} LabeledStatementNode */
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| 35 | /** @typedef {import("estree").Literal} LiteralNode */
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| 36 | /** @typedef {import("estree").LogicalExpression} LogicalExpressionNode */
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| 37 | /** @typedef {import("estree").ChainExpression} ChainExpressionNode */
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| 38 | /** @typedef {import("estree").MemberExpression} MemberExpressionNode */
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| 39 | /** @typedef {import("estree").MetaProperty} MetaPropertyNode */
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| 40 | /** @typedef {import("estree").MethodDefinition} MethodDefinitionNode */
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| 41 | /** @typedef {import("estree").ModuleDeclaration} ModuleDeclarationNode */
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| 42 | /** @typedef {import("estree").NewExpression} NewExpressionNode */
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| 43 | /** @typedef {import("estree").Node} AnyNode */
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| 44 | /** @typedef {import("estree").Program} ProgramNode */
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| 45 | /** @typedef {import("estree").Statement} StatementNode */
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| 46 | /** @typedef {import("estree").ImportDeclaration} ImportDeclarationNode */
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| 47 | /** @typedef {import("estree").ExportNamedDeclaration} ExportNamedDeclarationNode */
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| 48 | /** @typedef {import("estree").ExportDefaultDeclaration} ExportDefaultDeclarationNode */
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| 49 | /** @typedef {import("estree").ExportAllDeclaration} ExportAllDeclarationNode */
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| 50 | /** @typedef {import("estree").Super} SuperNode */
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| 51 | /** @typedef {import("estree").TaggedTemplateExpression} TaggedTemplateExpressionNode */
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| 52 | /** @typedef {import("estree").TemplateLiteral} TemplateLiteralNode */
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| 53 | /** @typedef {import("estree").ThisExpression} ThisExpressionNode */
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| 54 | /** @typedef {import("estree").UnaryExpression} UnaryExpressionNode */
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| 55 | /** @typedef {import("estree").VariableDeclarator} VariableDeclaratorNode */
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| 56 | /** @template T @typedef {import("tapable").AsArray<T>} AsArray<T> */
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| 57 | /** @typedef {import("../Parser").ParserState} ParserState */
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| 58 | /** @typedef {import("../Parser").PreparsedAst} PreparsedAst */
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| 59 | /** @typedef {{declaredScope: ScopeInfo, freeName: string | true, tagInfo: TagInfo | undefined}} VariableInfoInterface */
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| 60 | /** @typedef {{ name: string | VariableInfo, rootInfo: string | VariableInfo, getMembers: () => string[] }} GetInfoResult */
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| 61 |
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| 62 | const EMPTY_ARRAY = [];
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| 63 | const ALLOWED_MEMBER_TYPES_CALL_EXPRESSION = 0b01;
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| 64 | const ALLOWED_MEMBER_TYPES_EXPRESSION = 0b10;
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| 65 | const ALLOWED_MEMBER_TYPES_ALL = 0b11;
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| 66 |
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| 67 | // Syntax: https://developer.mozilla.org/en/SpiderMonkey/Parser_API
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| 68 |
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| 69 | const parser = AcornParser.extend(importAssertions);
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| 70 |
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| 71 | class VariableInfo {
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| 72 | /**
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| 73 | * @param {ScopeInfo} declaredScope scope in which the variable is declared
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| 74 | * @param {string | true} freeName which free name the variable aliases, or true when none
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| 75 | * @param {TagInfo | undefined} tagInfo info about tags
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| 76 | */
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| 77 | constructor(declaredScope, freeName, tagInfo) {
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| 78 | this.declaredScope = declaredScope;
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| 79 | this.freeName = freeName;
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| 80 | this.tagInfo = tagInfo;
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| 81 | }
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| 82 | }
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| 83 |
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| 84 | /** @typedef {string | ScopeInfo | VariableInfo} ExportedVariableInfo */
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| 85 | /** @typedef {LiteralNode | string | null | undefined} ImportSource */
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| 86 | /** @typedef {Omit<AcornOptions, "sourceType" | "ecmaVersion"> & { sourceType: "module" | "script" | "auto", ecmaVersion?: AcornOptions["ecmaVersion"] }} ParseOptions */
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| 87 |
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| 88 | /**
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| 89 | * @typedef {Object} TagInfo
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| 90 | * @property {any} tag
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| 91 | * @property {any} data
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| 92 | * @property {TagInfo | undefined} next
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| 93 | */
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| 94 |
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| 95 | /**
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| 96 | * @typedef {Object} ScopeInfo
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| 97 | * @property {StackedMap<string, VariableInfo | ScopeInfo>} definitions
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| 98 | * @property {boolean | "arrow"} topLevelScope
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| 99 | * @property {boolean} inShorthand
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| 100 | * @property {boolean} isStrict
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| 101 | * @property {boolean} isAsmJs
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| 102 | * @property {boolean} inTry
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| 103 | */
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| 104 |
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| 105 | const joinRanges = (startRange, endRange) => {
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| 106 | if (!endRange) return startRange;
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| 107 | if (!startRange) return endRange;
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| 108 | return [startRange[0], endRange[1]];
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| 109 | };
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| 110 |
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| 111 | const objectAndMembersToName = (object, membersReversed) => {
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| 112 | let name = object;
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| 113 | for (let i = membersReversed.length - 1; i >= 0; i--) {
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| 114 | name = name + "." + membersReversed[i];
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| 115 | }
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| 116 | return name;
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| 117 | };
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| 118 |
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| 119 | const getRootName = expression => {
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| 120 | switch (expression.type) {
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| 121 | case "Identifier":
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| 122 | return expression.name;
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| 123 | case "ThisExpression":
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| 124 | return "this";
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| 125 | case "MetaProperty":
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| 126 | return `${expression.meta.name}.${expression.property.name}`;
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| 127 | default:
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| 128 | return undefined;
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| 129 | }
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| 130 | };
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| 131 |
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| 132 | /** @type {AcornOptions} */
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| 133 | const defaultParserOptions = {
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| 134 | ranges: true,
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| 135 | locations: true,
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| 136 | ecmaVersion: "latest",
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| 137 | sourceType: "module",
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| 138 | // https://github.com/tc39/proposal-hashbang
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| 139 | allowHashBang: true,
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| 140 | onComment: null
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| 141 | };
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| 142 |
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| 143 | // regexp to match at least one "magic comment"
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| 144 | const webpackCommentRegExp = new RegExp(/(^|\W)webpack[A-Z]{1,}[A-Za-z]{1,}:/);
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| 145 |
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| 146 | const EMPTY_COMMENT_OPTIONS = {
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| 147 | options: null,
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| 148 | errors: null
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| 149 | };
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| 150 |
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| 151 | class JavascriptParser extends Parser {
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| 152 | /**
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| 153 | * @param {"module" | "script" | "auto"} sourceType default source type
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| 154 | */
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| 155 | constructor(sourceType = "auto") {
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| 156 | super();
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| 157 | this.hooks = Object.freeze({
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| 158 | /** @type {HookMap<SyncBailHook<[UnaryExpressionNode], BasicEvaluatedExpression | undefined | null>>} */
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| 159 | evaluateTypeof: new HookMap(() => new SyncBailHook(["expression"])),
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| 160 | /** @type {HookMap<SyncBailHook<[ExpressionNode], BasicEvaluatedExpression | undefined | null>>} */
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| 161 | evaluate: new HookMap(() => new SyncBailHook(["expression"])),
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| 162 | /** @type {HookMap<SyncBailHook<[IdentifierNode | ThisExpressionNode | MemberExpressionNode | MetaPropertyNode], BasicEvaluatedExpression | undefined | null>>} */
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| 163 | evaluateIdentifier: new HookMap(() => new SyncBailHook(["expression"])),
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| 164 | /** @type {HookMap<SyncBailHook<[IdentifierNode | ThisExpressionNode | MemberExpressionNode], BasicEvaluatedExpression | undefined | null>>} */
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| 165 | evaluateDefinedIdentifier: new HookMap(
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| 166 | () => new SyncBailHook(["expression"])
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| 167 | ),
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| 168 | /** @type {HookMap<SyncBailHook<[CallExpressionNode, BasicEvaluatedExpression | undefined], BasicEvaluatedExpression | undefined | null>>} */
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| 169 | evaluateCallExpressionMember: new HookMap(
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| 170 | () => new SyncBailHook(["expression", "param"])
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| 171 | ),
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| 172 | /** @type {HookMap<SyncBailHook<[ExpressionNode | DeclarationNode | PrivateIdentifierNode, number], boolean | void>>} */
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| 173 | isPure: new HookMap(
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| 174 | () => new SyncBailHook(["expression", "commentsStartPosition"])
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| 175 | ),
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| 176 | /** @type {SyncBailHook<[StatementNode | ModuleDeclarationNode], boolean | void>} */
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| 177 | preStatement: new SyncBailHook(["statement"]),
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| 178 |
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| 179 | /** @type {SyncBailHook<[StatementNode | ModuleDeclarationNode], boolean | void>} */
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| 180 | blockPreStatement: new SyncBailHook(["declaration"]),
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| 181 | /** @type {SyncBailHook<[StatementNode | ModuleDeclarationNode], boolean | void>} */
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| 182 | statement: new SyncBailHook(["statement"]),
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| 183 | /** @type {SyncBailHook<[IfStatementNode], boolean | void>} */
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| 184 | statementIf: new SyncBailHook(["statement"]),
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| 185 | /** @type {SyncBailHook<[ExpressionNode, ClassExpressionNode | ClassDeclarationNode], boolean | void>} */
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| 186 | classExtendsExpression: new SyncBailHook([
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| 187 | "expression",
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| 188 | "classDefinition"
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| 189 | ]),
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| 190 | /** @type {SyncBailHook<[MethodDefinitionNode | PropertyDefinitionNode, ClassExpressionNode | ClassDeclarationNode], boolean | void>} */
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| 191 | classBodyElement: new SyncBailHook(["element", "classDefinition"]),
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| 192 | /** @type {SyncBailHook<[ExpressionNode, MethodDefinitionNode | PropertyDefinitionNode, ClassExpressionNode | ClassDeclarationNode], boolean | void>} */
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| 193 | classBodyValue: new SyncBailHook([
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| 194 | "expression",
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| 195 | "element",
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| 196 | "classDefinition"
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| 197 | ]),
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| 198 | /** @type {HookMap<SyncBailHook<[LabeledStatementNode], boolean | void>>} */
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| 199 | label: new HookMap(() => new SyncBailHook(["statement"])),
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| 200 | /** @type {SyncBailHook<[ImportDeclarationNode, ImportSource], boolean | void>} */
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| 201 | import: new SyncBailHook(["statement", "source"]),
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| 202 | /** @type {SyncBailHook<[ImportDeclarationNode, ImportSource, string, string], boolean | void>} */
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| 203 | importSpecifier: new SyncBailHook([
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| 204 | "statement",
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| 205 | "source",
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| 206 | "exportName",
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| 207 | "identifierName"
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| 208 | ]),
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| 209 | /** @type {SyncBailHook<[ExportNamedDeclarationNode | ExportAllDeclarationNode], boolean | void>} */
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| 210 | export: new SyncBailHook(["statement"]),
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| 211 | /** @type {SyncBailHook<[ExportNamedDeclarationNode | ExportAllDeclarationNode, ImportSource], boolean | void>} */
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| 212 | exportImport: new SyncBailHook(["statement", "source"]),
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| 213 | /** @type {SyncBailHook<[ExportNamedDeclarationNode | ExportAllDeclarationNode, DeclarationNode], boolean | void>} */
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| 214 | exportDeclaration: new SyncBailHook(["statement", "declaration"]),
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| 215 | /** @type {SyncBailHook<[ExportDefaultDeclarationNode, DeclarationNode], boolean | void>} */
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| 216 | exportExpression: new SyncBailHook(["statement", "declaration"]),
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| 217 | /** @type {SyncBailHook<[ExportNamedDeclarationNode | ExportAllDeclarationNode, string, string, number | undefined], boolean | void>} */
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| 218 | exportSpecifier: new SyncBailHook([
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| 219 | "statement",
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| 220 | "identifierName",
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| 221 | "exportName",
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| 222 | "index"
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| 223 | ]),
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| 224 | /** @type {SyncBailHook<[ExportNamedDeclarationNode | ExportAllDeclarationNode, ImportSource, string, string, number | undefined], boolean | void>} */
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| 225 | exportImportSpecifier: new SyncBailHook([
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| 226 | "statement",
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| 227 | "source",
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| 228 | "identifierName",
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| 229 | "exportName",
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| 230 | "index"
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| 231 | ]),
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| 232 | /** @type {SyncBailHook<[VariableDeclaratorNode, StatementNode], boolean | void>} */
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| 233 | preDeclarator: new SyncBailHook(["declarator", "statement"]),
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| 234 | /** @type {SyncBailHook<[VariableDeclaratorNode, StatementNode], boolean | void>} */
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| 235 | declarator: new SyncBailHook(["declarator", "statement"]),
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| 236 | /** @type {HookMap<SyncBailHook<[DeclarationNode], boolean | void>>} */
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| 237 | varDeclaration: new HookMap(() => new SyncBailHook(["declaration"])),
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| 238 | /** @type {HookMap<SyncBailHook<[DeclarationNode], boolean | void>>} */
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| 239 | varDeclarationLet: new HookMap(() => new SyncBailHook(["declaration"])),
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| 240 | /** @type {HookMap<SyncBailHook<[DeclarationNode], boolean | void>>} */
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| 241 | varDeclarationConst: new HookMap(() => new SyncBailHook(["declaration"])),
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| 242 | /** @type {HookMap<SyncBailHook<[DeclarationNode], boolean | void>>} */
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| 243 | varDeclarationVar: new HookMap(() => new SyncBailHook(["declaration"])),
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| 244 | /** @type {HookMap<SyncBailHook<[IdentifierNode], boolean | void>>} */
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| 245 | pattern: new HookMap(() => new SyncBailHook(["pattern"])),
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| 246 | /** @type {HookMap<SyncBailHook<[ExpressionNode], boolean | void>>} */
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| 247 | canRename: new HookMap(() => new SyncBailHook(["initExpression"])),
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| 248 | /** @type {HookMap<SyncBailHook<[ExpressionNode], boolean | void>>} */
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| 249 | rename: new HookMap(() => new SyncBailHook(["initExpression"])),
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| 250 | /** @type {HookMap<SyncBailHook<[import("estree").AssignmentExpression], boolean | void>>} */
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| 251 | assign: new HookMap(() => new SyncBailHook(["expression"])),
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| 252 | /** @type {HookMap<SyncBailHook<[import("estree").AssignmentExpression, string[]], boolean | void>>} */
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| 253 | assignMemberChain: new HookMap(
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| 254 | () => new SyncBailHook(["expression", "members"])
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| 255 | ),
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| 256 | /** @type {HookMap<SyncBailHook<[ExpressionNode], boolean | void>>} */
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| 257 | typeof: new HookMap(() => new SyncBailHook(["expression"])),
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| 258 | /** @type {SyncBailHook<[ExpressionNode], boolean | void>} */
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| 259 | importCall: new SyncBailHook(["expression"]),
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| 260 | /** @type {SyncBailHook<[ExpressionNode], boolean | void>} */
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| 261 | topLevelAwait: new SyncBailHook(["expression"]),
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| 262 | /** @type {HookMap<SyncBailHook<[ExpressionNode], boolean | void>>} */
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| 263 | call: new HookMap(() => new SyncBailHook(["expression"])),
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| 264 | /** Something like "a.b()" */
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| 265 | /** @type {HookMap<SyncBailHook<[CallExpressionNode, string[]], boolean | void>>} */
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| 266 | callMemberChain: new HookMap(
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| 267 | () => new SyncBailHook(["expression", "members"])
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| 268 | ),
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| 269 | /** Something like "a.b().c.d" */
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| 270 | /** @type {HookMap<SyncBailHook<[ExpressionNode, string[], CallExpressionNode, string[]], boolean | void>>} */
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| 271 | memberChainOfCallMemberChain: new HookMap(
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| 272 | () =>
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| 273 | new SyncBailHook([
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| 274 | "expression",
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| 275 | "calleeMembers",
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| 276 | "callExpression",
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| 277 | "members"
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| 278 | ])
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| 279 | ),
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| 280 | /** Something like "a.b().c.d()"" */
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| 281 | /** @type {HookMap<SyncBailHook<[ExpressionNode, string[], CallExpressionNode, string[]], boolean | void>>} */
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| 282 | callMemberChainOfCallMemberChain: new HookMap(
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| 283 | () =>
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| 284 | new SyncBailHook([
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| 285 | "expression",
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| 286 | "calleeMembers",
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| 287 | "innerCallExpression",
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| 288 | "members"
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| 289 | ])
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| 290 | ),
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| 291 | /** @type {SyncBailHook<[ChainExpressionNode], boolean | void>} */
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| 292 | optionalChaining: new SyncBailHook(["optionalChaining"]),
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| 293 | /** @type {HookMap<SyncBailHook<[NewExpressionNode], boolean | void>>} */
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| 294 | new: new HookMap(() => new SyncBailHook(["expression"])),
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| 295 | /** @type {HookMap<SyncBailHook<[ExpressionNode], boolean | void>>} */
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| 296 | expression: new HookMap(() => new SyncBailHook(["expression"])),
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| 297 | /** @type {HookMap<SyncBailHook<[ExpressionNode, string[]], boolean | void>>} */
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| 298 | expressionMemberChain: new HookMap(
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| 299 | () => new SyncBailHook(["expression", "members"])
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| 300 | ),
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| 301 | /** @type {HookMap<SyncBailHook<[ExpressionNode, string[]], boolean | void>>} */
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| 302 | unhandledExpressionMemberChain: new HookMap(
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| 303 | () => new SyncBailHook(["expression", "members"])
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| 304 | ),
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| 305 | /** @type {SyncBailHook<[ExpressionNode], boolean | void>} */
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| 306 | expressionConditionalOperator: new SyncBailHook(["expression"]),
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| 307 | /** @type {SyncBailHook<[ExpressionNode], boolean | void>} */
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| 308 | expressionLogicalOperator: new SyncBailHook(["expression"]),
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| 309 | /** @type {SyncBailHook<[ProgramNode, CommentNode[]], boolean | void>} */
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| 310 | program: new SyncBailHook(["ast", "comments"]),
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| 311 | /** @type {SyncBailHook<[ProgramNode, CommentNode[]], boolean | void>} */
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| 312 | finish: new SyncBailHook(["ast", "comments"])
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| 313 | });
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| 314 | this.sourceType = sourceType;
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| 315 | /** @type {ScopeInfo} */
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| 316 | this.scope = undefined;
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| 317 | /** @type {ParserState} */
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| 318 | this.state = undefined;
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| 319 | this.comments = undefined;
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| 320 | this.semicolons = undefined;
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| 321 | /** @type {(StatementNode|ExpressionNode)[]} */
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| 322 | this.statementPath = undefined;
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| 323 | this.prevStatement = undefined;
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| 324 | this.currentTagData = undefined;
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| 325 | this._initializeEvaluating();
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| 326 | }
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| 327 |
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| 328 | _initializeEvaluating() {
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| 329 | this.hooks.evaluate.for("Literal").tap("JavascriptParser", _expr => {
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| 330 | const expr = /** @type {LiteralNode} */ (_expr);
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| 331 |
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| 332 | switch (typeof expr.value) {
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| 333 | case "number":
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| 334 | return new BasicEvaluatedExpression()
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| 335 | .setNumber(expr.value)
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| 336 | .setRange(expr.range);
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| 337 | case "bigint":
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| 338 | return new BasicEvaluatedExpression()
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| 339 | .setBigInt(expr.value)
|
|---|
| 340 | .setRange(expr.range);
|
|---|
| 341 | case "string":
|
|---|
| 342 | return new BasicEvaluatedExpression()
|
|---|
| 343 | .setString(expr.value)
|
|---|
| 344 | .setRange(expr.range);
|
|---|
| 345 | case "boolean":
|
|---|
| 346 | return new BasicEvaluatedExpression()
|
|---|
| 347 | .setBoolean(expr.value)
|
|---|
| 348 | .setRange(expr.range);
|
|---|
| 349 | }
|
|---|
| 350 | if (expr.value === null) {
|
|---|
| 351 | return new BasicEvaluatedExpression().setNull().setRange(expr.range);
|
|---|
| 352 | }
|
|---|
| 353 | if (expr.value instanceof RegExp) {
|
|---|
| 354 | return new BasicEvaluatedExpression()
|
|---|
| 355 | .setRegExp(expr.value)
|
|---|
| 356 | .setRange(expr.range);
|
|---|
| 357 | }
|
|---|
| 358 | });
|
|---|
| 359 | this.hooks.evaluate.for("NewExpression").tap("JavascriptParser", _expr => {
|
|---|
| 360 | const expr = /** @type {NewExpressionNode} */ (_expr);
|
|---|
| 361 | const callee = expr.callee;
|
|---|
| 362 | if (
|
|---|
| 363 | callee.type !== "Identifier" ||
|
|---|
| 364 | callee.name !== "RegExp" ||
|
|---|
| 365 | expr.arguments.length > 2 ||
|
|---|
| 366 | this.getVariableInfo("RegExp") !== "RegExp"
|
|---|
| 367 | )
|
|---|
| 368 | return;
|
|---|
| 369 |
|
|---|
| 370 | let regExp, flags;
|
|---|
| 371 | const arg1 = expr.arguments[0];
|
|---|
| 372 |
|
|---|
| 373 | if (arg1) {
|
|---|
| 374 | if (arg1.type === "SpreadElement") return;
|
|---|
| 375 |
|
|---|
| 376 | const evaluatedRegExp = this.evaluateExpression(arg1);
|
|---|
| 377 |
|
|---|
| 378 | if (!evaluatedRegExp) return;
|
|---|
| 379 |
|
|---|
| 380 | regExp = evaluatedRegExp.asString();
|
|---|
| 381 |
|
|---|
| 382 | if (!regExp) return;
|
|---|
| 383 | } else {
|
|---|
| 384 | return new BasicEvaluatedExpression()
|
|---|
| 385 | .setRegExp(new RegExp(""))
|
|---|
| 386 | .setRange(expr.range);
|
|---|
| 387 | }
|
|---|
| 388 |
|
|---|
| 389 | const arg2 = expr.arguments[1];
|
|---|
| 390 |
|
|---|
| 391 | if (arg2) {
|
|---|
| 392 | if (arg2.type === "SpreadElement") return;
|
|---|
| 393 |
|
|---|
| 394 | const evaluatedFlags = this.evaluateExpression(arg2);
|
|---|
| 395 |
|
|---|
| 396 | if (!evaluatedFlags) return;
|
|---|
| 397 |
|
|---|
| 398 | if (!evaluatedFlags.isUndefined()) {
|
|---|
| 399 | flags = evaluatedFlags.asString();
|
|---|
| 400 |
|
|---|
| 401 | if (
|
|---|
| 402 | flags === undefined ||
|
|---|
| 403 | !BasicEvaluatedExpression.isValidRegExpFlags(flags)
|
|---|
| 404 | )
|
|---|
| 405 | return;
|
|---|
| 406 | }
|
|---|
| 407 | }
|
|---|
| 408 |
|
|---|
| 409 | return new BasicEvaluatedExpression()
|
|---|
| 410 | .setRegExp(flags ? new RegExp(regExp, flags) : new RegExp(regExp))
|
|---|
| 411 | .setRange(expr.range);
|
|---|
| 412 | });
|
|---|
| 413 | this.hooks.evaluate
|
|---|
| 414 | .for("LogicalExpression")
|
|---|
| 415 | .tap("JavascriptParser", _expr => {
|
|---|
| 416 | const expr = /** @type {LogicalExpressionNode} */ (_expr);
|
|---|
| 417 |
|
|---|
| 418 | const left = this.evaluateExpression(expr.left);
|
|---|
| 419 | if (!left) return;
|
|---|
| 420 | if (expr.operator === "&&") {
|
|---|
| 421 | const leftAsBool = left.asBool();
|
|---|
| 422 | if (leftAsBool === false) return left.setRange(expr.range);
|
|---|
| 423 | if (leftAsBool !== true) return;
|
|---|
| 424 | } else if (expr.operator === "||") {
|
|---|
| 425 | const leftAsBool = left.asBool();
|
|---|
| 426 | if (leftAsBool === true) return left.setRange(expr.range);
|
|---|
| 427 | if (leftAsBool !== false) return;
|
|---|
| 428 | } else if (expr.operator === "??") {
|
|---|
| 429 | const leftAsNullish = left.asNullish();
|
|---|
| 430 | if (leftAsNullish === false) return left.setRange(expr.range);
|
|---|
| 431 | if (leftAsNullish !== true) return;
|
|---|
| 432 | } else return;
|
|---|
| 433 | const right = this.evaluateExpression(expr.right);
|
|---|
| 434 | if (!right) return;
|
|---|
| 435 | if (left.couldHaveSideEffects()) right.setSideEffects();
|
|---|
| 436 | return right.setRange(expr.range);
|
|---|
| 437 | });
|
|---|
| 438 |
|
|---|
| 439 | const valueAsExpression = (value, expr, sideEffects) => {
|
|---|
| 440 | switch (typeof value) {
|
|---|
| 441 | case "boolean":
|
|---|
| 442 | return new BasicEvaluatedExpression()
|
|---|
| 443 | .setBoolean(value)
|
|---|
| 444 | .setSideEffects(sideEffects)
|
|---|
| 445 | .setRange(expr.range);
|
|---|
| 446 | case "number":
|
|---|
| 447 | return new BasicEvaluatedExpression()
|
|---|
| 448 | .setNumber(value)
|
|---|
| 449 | .setSideEffects(sideEffects)
|
|---|
| 450 | .setRange(expr.range);
|
|---|
| 451 | case "bigint":
|
|---|
| 452 | return new BasicEvaluatedExpression()
|
|---|
| 453 | .setBigInt(value)
|
|---|
| 454 | .setSideEffects(sideEffects)
|
|---|
| 455 | .setRange(expr.range);
|
|---|
| 456 | case "string":
|
|---|
| 457 | return new BasicEvaluatedExpression()
|
|---|
| 458 | .setString(value)
|
|---|
| 459 | .setSideEffects(sideEffects)
|
|---|
| 460 | .setRange(expr.range);
|
|---|
| 461 | }
|
|---|
| 462 | };
|
|---|
| 463 |
|
|---|
| 464 | this.hooks.evaluate
|
|---|
| 465 | .for("BinaryExpression")
|
|---|
| 466 | .tap("JavascriptParser", _expr => {
|
|---|
| 467 | const expr = /** @type {BinaryExpressionNode} */ (_expr);
|
|---|
| 468 |
|
|---|
| 469 | const handleConstOperation = fn => {
|
|---|
| 470 | const left = this.evaluateExpression(expr.left);
|
|---|
| 471 | if (!left || !left.isCompileTimeValue()) return;
|
|---|
| 472 |
|
|---|
| 473 | const right = this.evaluateExpression(expr.right);
|
|---|
| 474 | if (!right || !right.isCompileTimeValue()) return;
|
|---|
| 475 |
|
|---|
| 476 | const result = fn(
|
|---|
| 477 | left.asCompileTimeValue(),
|
|---|
| 478 | right.asCompileTimeValue()
|
|---|
| 479 | );
|
|---|
| 480 | return valueAsExpression(
|
|---|
| 481 | result,
|
|---|
| 482 | expr,
|
|---|
| 483 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 484 | );
|
|---|
| 485 | };
|
|---|
| 486 |
|
|---|
| 487 | const isAlwaysDifferent = (a, b) =>
|
|---|
| 488 | (a === true && b === false) || (a === false && b === true);
|
|---|
| 489 |
|
|---|
| 490 | const handleTemplateStringCompare = (left, right, res, eql) => {
|
|---|
| 491 | const getPrefix = parts => {
|
|---|
| 492 | let value = "";
|
|---|
| 493 | for (const p of parts) {
|
|---|
| 494 | const v = p.asString();
|
|---|
| 495 | if (v !== undefined) value += v;
|
|---|
| 496 | else break;
|
|---|
| 497 | }
|
|---|
| 498 | return value;
|
|---|
| 499 | };
|
|---|
| 500 | const getSuffix = parts => {
|
|---|
| 501 | let value = "";
|
|---|
| 502 | for (let i = parts.length - 1; i >= 0; i--) {
|
|---|
| 503 | const v = parts[i].asString();
|
|---|
| 504 | if (v !== undefined) value = v + value;
|
|---|
| 505 | else break;
|
|---|
| 506 | }
|
|---|
| 507 | return value;
|
|---|
| 508 | };
|
|---|
| 509 | const leftPrefix = getPrefix(left.parts);
|
|---|
| 510 | const rightPrefix = getPrefix(right.parts);
|
|---|
| 511 | const leftSuffix = getSuffix(left.parts);
|
|---|
| 512 | const rightSuffix = getSuffix(right.parts);
|
|---|
| 513 | const lenPrefix = Math.min(leftPrefix.length, rightPrefix.length);
|
|---|
| 514 | const lenSuffix = Math.min(leftSuffix.length, rightSuffix.length);
|
|---|
| 515 | if (
|
|---|
| 516 | leftPrefix.slice(0, lenPrefix) !==
|
|---|
| 517 | rightPrefix.slice(0, lenPrefix) ||
|
|---|
| 518 | leftSuffix.slice(-lenSuffix) !== rightSuffix.slice(-lenSuffix)
|
|---|
| 519 | ) {
|
|---|
| 520 | return res
|
|---|
| 521 | .setBoolean(!eql)
|
|---|
| 522 | .setSideEffects(
|
|---|
| 523 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 524 | );
|
|---|
| 525 | }
|
|---|
| 526 | };
|
|---|
| 527 |
|
|---|
| 528 | const handleStrictEqualityComparison = eql => {
|
|---|
| 529 | const left = this.evaluateExpression(expr.left);
|
|---|
| 530 | if (!left) return;
|
|---|
| 531 | const right = this.evaluateExpression(expr.right);
|
|---|
| 532 | if (!right) return;
|
|---|
| 533 | const res = new BasicEvaluatedExpression();
|
|---|
| 534 | res.setRange(expr.range);
|
|---|
| 535 |
|
|---|
| 536 | const leftConst = left.isCompileTimeValue();
|
|---|
| 537 | const rightConst = right.isCompileTimeValue();
|
|---|
| 538 |
|
|---|
| 539 | if (leftConst && rightConst) {
|
|---|
| 540 | return res
|
|---|
| 541 | .setBoolean(
|
|---|
| 542 | eql ===
|
|---|
| 543 | (left.asCompileTimeValue() === right.asCompileTimeValue())
|
|---|
| 544 | )
|
|---|
| 545 | .setSideEffects(
|
|---|
| 546 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 547 | );
|
|---|
| 548 | }
|
|---|
| 549 |
|
|---|
| 550 | if (left.isArray() && right.isArray()) {
|
|---|
| 551 | return res
|
|---|
| 552 | .setBoolean(!eql)
|
|---|
| 553 | .setSideEffects(
|
|---|
| 554 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 555 | );
|
|---|
| 556 | }
|
|---|
| 557 | if (left.isTemplateString() && right.isTemplateString()) {
|
|---|
| 558 | return handleTemplateStringCompare(left, right, res, eql);
|
|---|
| 559 | }
|
|---|
| 560 |
|
|---|
| 561 | const leftPrimitive = left.isPrimitiveType();
|
|---|
| 562 | const rightPrimitive = right.isPrimitiveType();
|
|---|
| 563 |
|
|---|
| 564 | if (
|
|---|
| 565 | // Primitive !== Object or
|
|---|
| 566 | // compile-time object types are never equal to something at runtime
|
|---|
| 567 | (leftPrimitive === false &&
|
|---|
| 568 | (leftConst || rightPrimitive === true)) ||
|
|---|
| 569 | (rightPrimitive === false &&
|
|---|
| 570 | (rightConst || leftPrimitive === true)) ||
|
|---|
| 571 | // Different nullish or boolish status also means not equal
|
|---|
| 572 | isAlwaysDifferent(left.asBool(), right.asBool()) ||
|
|---|
| 573 | isAlwaysDifferent(left.asNullish(), right.asNullish())
|
|---|
| 574 | ) {
|
|---|
| 575 | return res
|
|---|
| 576 | .setBoolean(!eql)
|
|---|
| 577 | .setSideEffects(
|
|---|
| 578 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 579 | );
|
|---|
| 580 | }
|
|---|
| 581 | };
|
|---|
| 582 |
|
|---|
| 583 | const handleAbstractEqualityComparison = eql => {
|
|---|
| 584 | const left = this.evaluateExpression(expr.left);
|
|---|
| 585 | if (!left) return;
|
|---|
| 586 | const right = this.evaluateExpression(expr.right);
|
|---|
| 587 | if (!right) return;
|
|---|
| 588 | const res = new BasicEvaluatedExpression();
|
|---|
| 589 | res.setRange(expr.range);
|
|---|
| 590 |
|
|---|
| 591 | const leftConst = left.isCompileTimeValue();
|
|---|
| 592 | const rightConst = right.isCompileTimeValue();
|
|---|
| 593 |
|
|---|
| 594 | if (leftConst && rightConst) {
|
|---|
| 595 | return res
|
|---|
| 596 | .setBoolean(
|
|---|
| 597 | eql ===
|
|---|
| 598 | // eslint-disable-next-line eqeqeq
|
|---|
| 599 | (left.asCompileTimeValue() == right.asCompileTimeValue())
|
|---|
| 600 | )
|
|---|
| 601 | .setSideEffects(
|
|---|
| 602 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 603 | );
|
|---|
| 604 | }
|
|---|
| 605 |
|
|---|
| 606 | if (left.isArray() && right.isArray()) {
|
|---|
| 607 | return res
|
|---|
| 608 | .setBoolean(!eql)
|
|---|
| 609 | .setSideEffects(
|
|---|
| 610 | left.couldHaveSideEffects() || right.couldHaveSideEffects()
|
|---|
| 611 | );
|
|---|
| 612 | }
|
|---|
| 613 | if (left.isTemplateString() && right.isTemplateString()) {
|
|---|
| 614 | return handleTemplateStringCompare(left, right, res, eql);
|
|---|
| 615 | }
|
|---|
| 616 | };
|
|---|
| 617 |
|
|---|
| 618 | if (expr.operator === "+") {
|
|---|
| 619 | const left = this.evaluateExpression(expr.left);
|
|---|
| 620 | if (!left) return;
|
|---|
| 621 | const right = this.evaluateExpression(expr.right);
|
|---|
| 622 | if (!right) return;
|
|---|
| 623 | const res = new BasicEvaluatedExpression();
|
|---|
| 624 | if (left.isString()) {
|
|---|
| 625 | if (right.isString()) {
|
|---|
| 626 | res.setString(left.string + right.string);
|
|---|
| 627 | } else if (right.isNumber()) {
|
|---|
| 628 | res.setString(left.string + right.number);
|
|---|
| 629 | } else if (
|
|---|
| 630 | right.isWrapped() &&
|
|---|
| 631 | right.prefix &&
|
|---|
| 632 | right.prefix.isString()
|
|---|
| 633 | ) {
|
|---|
| 634 | // "left" + ("prefix" + inner + "postfix")
|
|---|
| 635 | // => ("leftPrefix" + inner + "postfix")
|
|---|
| 636 | res.setWrapped(
|
|---|
| 637 | new BasicEvaluatedExpression()
|
|---|
| 638 | .setString(left.string + right.prefix.string)
|
|---|
| 639 | .setRange(joinRanges(left.range, right.prefix.range)),
|
|---|
| 640 | right.postfix,
|
|---|
| 641 | right.wrappedInnerExpressions
|
|---|
| 642 | );
|
|---|
| 643 | } else if (right.isWrapped()) {
|
|---|
| 644 | // "left" + ([null] + inner + "postfix")
|
|---|
| 645 | // => ("left" + inner + "postfix")
|
|---|
| 646 | res.setWrapped(
|
|---|
| 647 | left,
|
|---|
| 648 | right.postfix,
|
|---|
| 649 | right.wrappedInnerExpressions
|
|---|
| 650 | );
|
|---|
| 651 | } else {
|
|---|
| 652 | // "left" + expr
|
|---|
| 653 | // => ("left" + expr + "")
|
|---|
| 654 | res.setWrapped(left, null, [right]);
|
|---|
| 655 | }
|
|---|
| 656 | } else if (left.isNumber()) {
|
|---|
| 657 | if (right.isString()) {
|
|---|
| 658 | res.setString(left.number + right.string);
|
|---|
| 659 | } else if (right.isNumber()) {
|
|---|
| 660 | res.setNumber(left.number + right.number);
|
|---|
| 661 | } else {
|
|---|
| 662 | return;
|
|---|
| 663 | }
|
|---|
| 664 | } else if (left.isBigInt()) {
|
|---|
| 665 | if (right.isBigInt()) {
|
|---|
| 666 | res.setBigInt(left.bigint + right.bigint);
|
|---|
| 667 | }
|
|---|
| 668 | } else if (left.isWrapped()) {
|
|---|
| 669 | if (left.postfix && left.postfix.isString() && right.isString()) {
|
|---|
| 670 | // ("prefix" + inner + "postfix") + "right"
|
|---|
| 671 | // => ("prefix" + inner + "postfixRight")
|
|---|
| 672 | res.setWrapped(
|
|---|
| 673 | left.prefix,
|
|---|
| 674 | new BasicEvaluatedExpression()
|
|---|
| 675 | .setString(left.postfix.string + right.string)
|
|---|
| 676 | .setRange(joinRanges(left.postfix.range, right.range)),
|
|---|
| 677 | left.wrappedInnerExpressions
|
|---|
| 678 | );
|
|---|
| 679 | } else if (
|
|---|
| 680 | left.postfix &&
|
|---|
| 681 | left.postfix.isString() &&
|
|---|
| 682 | right.isNumber()
|
|---|
| 683 | ) {
|
|---|
| 684 | // ("prefix" + inner + "postfix") + 123
|
|---|
| 685 | // => ("prefix" + inner + "postfix123")
|
|---|
| 686 | res.setWrapped(
|
|---|
| 687 | left.prefix,
|
|---|
| 688 | new BasicEvaluatedExpression()
|
|---|
| 689 | .setString(left.postfix.string + right.number)
|
|---|
| 690 | .setRange(joinRanges(left.postfix.range, right.range)),
|
|---|
| 691 | left.wrappedInnerExpressions
|
|---|
| 692 | );
|
|---|
| 693 | } else if (right.isString()) {
|
|---|
| 694 | // ("prefix" + inner + [null]) + "right"
|
|---|
| 695 | // => ("prefix" + inner + "right")
|
|---|
| 696 | res.setWrapped(left.prefix, right, left.wrappedInnerExpressions);
|
|---|
| 697 | } else if (right.isNumber()) {
|
|---|
| 698 | // ("prefix" + inner + [null]) + 123
|
|---|
| 699 | // => ("prefix" + inner + "123")
|
|---|
| 700 | res.setWrapped(
|
|---|
| 701 | left.prefix,
|
|---|
| 702 | new BasicEvaluatedExpression()
|
|---|
| 703 | .setString(right.number + "")
|
|---|
| 704 | .setRange(right.range),
|
|---|
| 705 | left.wrappedInnerExpressions
|
|---|
| 706 | );
|
|---|
| 707 | } else if (right.isWrapped()) {
|
|---|
| 708 | // ("prefix1" + inner1 + "postfix1") + ("prefix2" + inner2 + "postfix2")
|
|---|
| 709 | // ("prefix1" + inner1 + "postfix1" + "prefix2" + inner2 + "postfix2")
|
|---|
| 710 | res.setWrapped(
|
|---|
| 711 | left.prefix,
|
|---|
| 712 | right.postfix,
|
|---|
| 713 | left.wrappedInnerExpressions &&
|
|---|
| 714 | right.wrappedInnerExpressions &&
|
|---|
| 715 | left.wrappedInnerExpressions
|
|---|
| 716 | .concat(left.postfix ? [left.postfix] : [])
|
|---|
| 717 | .concat(right.prefix ? [right.prefix] : [])
|
|---|
| 718 | .concat(right.wrappedInnerExpressions)
|
|---|
| 719 | );
|
|---|
| 720 | } else {
|
|---|
| 721 | // ("prefix" + inner + postfix) + expr
|
|---|
| 722 | // => ("prefix" + inner + postfix + expr + [null])
|
|---|
| 723 | res.setWrapped(
|
|---|
| 724 | left.prefix,
|
|---|
| 725 | null,
|
|---|
| 726 | left.wrappedInnerExpressions &&
|
|---|
| 727 | left.wrappedInnerExpressions.concat(
|
|---|
| 728 | left.postfix ? [left.postfix, right] : [right]
|
|---|
| 729 | )
|
|---|
| 730 | );
|
|---|
| 731 | }
|
|---|
| 732 | } else {
|
|---|
| 733 | if (right.isString()) {
|
|---|
| 734 | // left + "right"
|
|---|
| 735 | // => ([null] + left + "right")
|
|---|
| 736 | res.setWrapped(null, right, [left]);
|
|---|
| 737 | } else if (right.isWrapped()) {
|
|---|
| 738 | // left + (prefix + inner + "postfix")
|
|---|
| 739 | // => ([null] + left + prefix + inner + "postfix")
|
|---|
| 740 | res.setWrapped(
|
|---|
| 741 | null,
|
|---|
| 742 | right.postfix,
|
|---|
| 743 | right.wrappedInnerExpressions &&
|
|---|
| 744 | (right.prefix ? [left, right.prefix] : [left]).concat(
|
|---|
| 745 | right.wrappedInnerExpressions
|
|---|
| 746 | )
|
|---|
| 747 | );
|
|---|
| 748 | } else {
|
|---|
| 749 | return;
|
|---|
| 750 | }
|
|---|
| 751 | }
|
|---|
| 752 | if (left.couldHaveSideEffects() || right.couldHaveSideEffects())
|
|---|
| 753 | res.setSideEffects();
|
|---|
| 754 | res.setRange(expr.range);
|
|---|
| 755 | return res;
|
|---|
| 756 | } else if (expr.operator === "-") {
|
|---|
| 757 | return handleConstOperation((l, r) => l - r);
|
|---|
| 758 | } else if (expr.operator === "*") {
|
|---|
| 759 | return handleConstOperation((l, r) => l * r);
|
|---|
| 760 | } else if (expr.operator === "/") {
|
|---|
| 761 | return handleConstOperation((l, r) => l / r);
|
|---|
| 762 | } else if (expr.operator === "**") {
|
|---|
| 763 | return handleConstOperation((l, r) => l ** r);
|
|---|
| 764 | } else if (expr.operator === "===") {
|
|---|
| 765 | return handleStrictEqualityComparison(true);
|
|---|
| 766 | } else if (expr.operator === "==") {
|
|---|
| 767 | return handleAbstractEqualityComparison(true);
|
|---|
| 768 | } else if (expr.operator === "!==") {
|
|---|
| 769 | return handleStrictEqualityComparison(false);
|
|---|
| 770 | } else if (expr.operator === "!=") {
|
|---|
| 771 | return handleAbstractEqualityComparison(false);
|
|---|
| 772 | } else if (expr.operator === "&") {
|
|---|
| 773 | return handleConstOperation((l, r) => l & r);
|
|---|
| 774 | } else if (expr.operator === "|") {
|
|---|
| 775 | return handleConstOperation((l, r) => l | r);
|
|---|
| 776 | } else if (expr.operator === "^") {
|
|---|
| 777 | return handleConstOperation((l, r) => l ^ r);
|
|---|
| 778 | } else if (expr.operator === ">>>") {
|
|---|
| 779 | return handleConstOperation((l, r) => l >>> r);
|
|---|
| 780 | } else if (expr.operator === ">>") {
|
|---|
| 781 | return handleConstOperation((l, r) => l >> r);
|
|---|
| 782 | } else if (expr.operator === "<<") {
|
|---|
| 783 | return handleConstOperation((l, r) => l << r);
|
|---|
| 784 | } else if (expr.operator === "<") {
|
|---|
| 785 | return handleConstOperation((l, r) => l < r);
|
|---|
| 786 | } else if (expr.operator === ">") {
|
|---|
| 787 | return handleConstOperation((l, r) => l > r);
|
|---|
| 788 | } else if (expr.operator === "<=") {
|
|---|
| 789 | return handleConstOperation((l, r) => l <= r);
|
|---|
| 790 | } else if (expr.operator === ">=") {
|
|---|
| 791 | return handleConstOperation((l, r) => l >= r);
|
|---|
| 792 | }
|
|---|
| 793 | });
|
|---|
| 794 | this.hooks.evaluate
|
|---|
| 795 | .for("UnaryExpression")
|
|---|
| 796 | .tap("JavascriptParser", _expr => {
|
|---|
| 797 | const expr = /** @type {UnaryExpressionNode} */ (_expr);
|
|---|
| 798 |
|
|---|
| 799 | const handleConstOperation = fn => {
|
|---|
| 800 | const argument = this.evaluateExpression(expr.argument);
|
|---|
| 801 | if (!argument || !argument.isCompileTimeValue()) return;
|
|---|
| 802 | const result = fn(argument.asCompileTimeValue());
|
|---|
| 803 | return valueAsExpression(
|
|---|
| 804 | result,
|
|---|
| 805 | expr,
|
|---|
| 806 | argument.couldHaveSideEffects()
|
|---|
| 807 | );
|
|---|
| 808 | };
|
|---|
| 809 |
|
|---|
| 810 | if (expr.operator === "typeof") {
|
|---|
| 811 | switch (expr.argument.type) {
|
|---|
| 812 | case "Identifier": {
|
|---|
| 813 | const res = this.callHooksForName(
|
|---|
| 814 | this.hooks.evaluateTypeof,
|
|---|
| 815 | expr.argument.name,
|
|---|
| 816 | expr
|
|---|
| 817 | );
|
|---|
| 818 | if (res !== undefined) return res;
|
|---|
| 819 | break;
|
|---|
| 820 | }
|
|---|
| 821 | case "MetaProperty": {
|
|---|
| 822 | const res = this.callHooksForName(
|
|---|
| 823 | this.hooks.evaluateTypeof,
|
|---|
| 824 | getRootName(expr.argument),
|
|---|
| 825 | expr
|
|---|
| 826 | );
|
|---|
| 827 | if (res !== undefined) return res;
|
|---|
| 828 | break;
|
|---|
| 829 | }
|
|---|
| 830 | case "MemberExpression": {
|
|---|
| 831 | const res = this.callHooksForExpression(
|
|---|
| 832 | this.hooks.evaluateTypeof,
|
|---|
| 833 | expr.argument,
|
|---|
| 834 | expr
|
|---|
| 835 | );
|
|---|
| 836 | if (res !== undefined) return res;
|
|---|
| 837 | break;
|
|---|
| 838 | }
|
|---|
| 839 | case "ChainExpression": {
|
|---|
| 840 | const res = this.callHooksForExpression(
|
|---|
| 841 | this.hooks.evaluateTypeof,
|
|---|
| 842 | expr.argument.expression,
|
|---|
| 843 | expr
|
|---|
| 844 | );
|
|---|
| 845 | if (res !== undefined) return res;
|
|---|
| 846 | break;
|
|---|
| 847 | }
|
|---|
| 848 | case "FunctionExpression": {
|
|---|
| 849 | return new BasicEvaluatedExpression()
|
|---|
| 850 | .setString("function")
|
|---|
| 851 | .setRange(expr.range);
|
|---|
| 852 | }
|
|---|
| 853 | }
|
|---|
| 854 | const arg = this.evaluateExpression(expr.argument);
|
|---|
| 855 | if (arg.isUnknown()) return;
|
|---|
| 856 | if (arg.isString()) {
|
|---|
| 857 | return new BasicEvaluatedExpression()
|
|---|
| 858 | .setString("string")
|
|---|
| 859 | .setRange(expr.range);
|
|---|
| 860 | }
|
|---|
| 861 | if (arg.isWrapped()) {
|
|---|
| 862 | return new BasicEvaluatedExpression()
|
|---|
| 863 | .setString("string")
|
|---|
| 864 | .setSideEffects()
|
|---|
| 865 | .setRange(expr.range);
|
|---|
| 866 | }
|
|---|
| 867 | if (arg.isUndefined()) {
|
|---|
| 868 | return new BasicEvaluatedExpression()
|
|---|
| 869 | .setString("undefined")
|
|---|
| 870 | .setRange(expr.range);
|
|---|
| 871 | }
|
|---|
| 872 | if (arg.isNumber()) {
|
|---|
| 873 | return new BasicEvaluatedExpression()
|
|---|
| 874 | .setString("number")
|
|---|
| 875 | .setRange(expr.range);
|
|---|
| 876 | }
|
|---|
| 877 | if (arg.isBigInt()) {
|
|---|
| 878 | return new BasicEvaluatedExpression()
|
|---|
| 879 | .setString("bigint")
|
|---|
| 880 | .setRange(expr.range);
|
|---|
| 881 | }
|
|---|
| 882 | if (arg.isBoolean()) {
|
|---|
| 883 | return new BasicEvaluatedExpression()
|
|---|
| 884 | .setString("boolean")
|
|---|
| 885 | .setRange(expr.range);
|
|---|
| 886 | }
|
|---|
| 887 | if (arg.isConstArray() || arg.isRegExp() || arg.isNull()) {
|
|---|
| 888 | return new BasicEvaluatedExpression()
|
|---|
| 889 | .setString("object")
|
|---|
| 890 | .setRange(expr.range);
|
|---|
| 891 | }
|
|---|
| 892 | if (arg.isArray()) {
|
|---|
| 893 | return new BasicEvaluatedExpression()
|
|---|
| 894 | .setString("object")
|
|---|
| 895 | .setSideEffects(arg.couldHaveSideEffects())
|
|---|
| 896 | .setRange(expr.range);
|
|---|
| 897 | }
|
|---|
| 898 | } else if (expr.operator === "!") {
|
|---|
| 899 | const argument = this.evaluateExpression(expr.argument);
|
|---|
| 900 | if (!argument) return;
|
|---|
| 901 | const bool = argument.asBool();
|
|---|
| 902 | if (typeof bool !== "boolean") return;
|
|---|
| 903 | return new BasicEvaluatedExpression()
|
|---|
| 904 | .setBoolean(!bool)
|
|---|
| 905 | .setSideEffects(argument.couldHaveSideEffects())
|
|---|
| 906 | .setRange(expr.range);
|
|---|
| 907 | } else if (expr.operator === "~") {
|
|---|
| 908 | return handleConstOperation(v => ~v);
|
|---|
| 909 | } else if (expr.operator === "+") {
|
|---|
| 910 | return handleConstOperation(v => +v);
|
|---|
| 911 | } else if (expr.operator === "-") {
|
|---|
| 912 | return handleConstOperation(v => -v);
|
|---|
| 913 | }
|
|---|
| 914 | });
|
|---|
| 915 | this.hooks.evaluateTypeof.for("undefined").tap("JavascriptParser", expr => {
|
|---|
| 916 | return new BasicEvaluatedExpression()
|
|---|
| 917 | .setString("undefined")
|
|---|
| 918 | .setRange(expr.range);
|
|---|
| 919 | });
|
|---|
| 920 | /**
|
|---|
| 921 | * @param {string} exprType expression type name
|
|---|
| 922 | * @param {function(ExpressionNode): GetInfoResult | undefined} getInfo get info
|
|---|
| 923 | * @returns {void}
|
|---|
| 924 | */
|
|---|
| 925 | const tapEvaluateWithVariableInfo = (exprType, getInfo) => {
|
|---|
| 926 | /** @type {ExpressionNode | undefined} */
|
|---|
| 927 | let cachedExpression = undefined;
|
|---|
| 928 | /** @type {GetInfoResult | undefined} */
|
|---|
| 929 | let cachedInfo = undefined;
|
|---|
| 930 | this.hooks.evaluate.for(exprType).tap("JavascriptParser", expr => {
|
|---|
| 931 | const expression = /** @type {MemberExpressionNode} */ (expr);
|
|---|
| 932 |
|
|---|
| 933 | const info = getInfo(expr);
|
|---|
| 934 | if (info !== undefined) {
|
|---|
| 935 | return this.callHooksForInfoWithFallback(
|
|---|
| 936 | this.hooks.evaluateIdentifier,
|
|---|
| 937 | info.name,
|
|---|
| 938 | name => {
|
|---|
| 939 | cachedExpression = expression;
|
|---|
| 940 | cachedInfo = info;
|
|---|
| 941 | },
|
|---|
| 942 | name => {
|
|---|
| 943 | const hook = this.hooks.evaluateDefinedIdentifier.get(name);
|
|---|
| 944 | if (hook !== undefined) {
|
|---|
| 945 | return hook.call(expression);
|
|---|
| 946 | }
|
|---|
| 947 | },
|
|---|
| 948 | expression
|
|---|
| 949 | );
|
|---|
| 950 | }
|
|---|
| 951 | });
|
|---|
| 952 | this.hooks.evaluate
|
|---|
| 953 | .for(exprType)
|
|---|
| 954 | .tap({ name: "JavascriptParser", stage: 100 }, expr => {
|
|---|
| 955 | const info = cachedExpression === expr ? cachedInfo : getInfo(expr);
|
|---|
| 956 | if (info !== undefined) {
|
|---|
| 957 | return new BasicEvaluatedExpression()
|
|---|
| 958 | .setIdentifier(info.name, info.rootInfo, info.getMembers)
|
|---|
| 959 | .setRange(expr.range);
|
|---|
| 960 | }
|
|---|
| 961 | });
|
|---|
| 962 | this.hooks.finish.tap("JavascriptParser", () => {
|
|---|
| 963 | // Cleanup for GC
|
|---|
| 964 | cachedExpression = cachedInfo = undefined;
|
|---|
| 965 | });
|
|---|
| 966 | };
|
|---|
| 967 | tapEvaluateWithVariableInfo("Identifier", expr => {
|
|---|
| 968 | const info = this.getVariableInfo(
|
|---|
| 969 | /** @type {IdentifierNode} */ (expr).name
|
|---|
| 970 | );
|
|---|
| 971 | if (
|
|---|
| 972 | typeof info === "string" ||
|
|---|
| 973 | (info instanceof VariableInfo && typeof info.freeName === "string")
|
|---|
| 974 | ) {
|
|---|
| 975 | return { name: info, rootInfo: info, getMembers: () => [] };
|
|---|
| 976 | }
|
|---|
| 977 | });
|
|---|
| 978 | tapEvaluateWithVariableInfo("ThisExpression", expr => {
|
|---|
| 979 | const info = this.getVariableInfo("this");
|
|---|
| 980 | if (
|
|---|
| 981 | typeof info === "string" ||
|
|---|
| 982 | (info instanceof VariableInfo && typeof info.freeName === "string")
|
|---|
| 983 | ) {
|
|---|
| 984 | return { name: info, rootInfo: info, getMembers: () => [] };
|
|---|
| 985 | }
|
|---|
| 986 | });
|
|---|
| 987 | this.hooks.evaluate.for("MetaProperty").tap("JavascriptParser", expr => {
|
|---|
| 988 | const metaProperty = /** @type {MetaPropertyNode} */ (expr);
|
|---|
| 989 |
|
|---|
| 990 | return this.callHooksForName(
|
|---|
| 991 | this.hooks.evaluateIdentifier,
|
|---|
| 992 | getRootName(expr),
|
|---|
| 993 | metaProperty
|
|---|
| 994 | );
|
|---|
| 995 | });
|
|---|
| 996 | tapEvaluateWithVariableInfo("MemberExpression", expr =>
|
|---|
| 997 | this.getMemberExpressionInfo(
|
|---|
| 998 | /** @type {MemberExpressionNode} */ (expr),
|
|---|
| 999 | ALLOWED_MEMBER_TYPES_EXPRESSION
|
|---|
| 1000 | )
|
|---|
| 1001 | );
|
|---|
| 1002 |
|
|---|
| 1003 | this.hooks.evaluate.for("CallExpression").tap("JavascriptParser", _expr => {
|
|---|
| 1004 | const expr = /** @type {CallExpressionNode} */ (_expr);
|
|---|
| 1005 | if (
|
|---|
| 1006 | expr.callee.type !== "MemberExpression" ||
|
|---|
| 1007 | expr.callee.property.type !==
|
|---|
| 1008 | (expr.callee.computed ? "Literal" : "Identifier")
|
|---|
| 1009 | ) {
|
|---|
| 1010 | return;
|
|---|
| 1011 | }
|
|---|
| 1012 |
|
|---|
| 1013 | // type Super also possible here
|
|---|
| 1014 | const param = this.evaluateExpression(
|
|---|
| 1015 | /** @type {ExpressionNode} */ (expr.callee.object)
|
|---|
| 1016 | );
|
|---|
| 1017 | if (!param) return;
|
|---|
| 1018 | const property =
|
|---|
| 1019 | expr.callee.property.type === "Literal"
|
|---|
| 1020 | ? `${expr.callee.property.value}`
|
|---|
| 1021 | : expr.callee.property.name;
|
|---|
| 1022 | const hook = this.hooks.evaluateCallExpressionMember.get(property);
|
|---|
| 1023 | if (hook !== undefined) {
|
|---|
| 1024 | return hook.call(expr, param);
|
|---|
| 1025 | }
|
|---|
| 1026 | });
|
|---|
| 1027 | this.hooks.evaluateCallExpressionMember
|
|---|
| 1028 | .for("indexOf")
|
|---|
| 1029 | .tap("JavascriptParser", (expr, param) => {
|
|---|
| 1030 | if (!param.isString()) return;
|
|---|
| 1031 | if (expr.arguments.length === 0) return;
|
|---|
| 1032 | const [arg1, arg2] = expr.arguments;
|
|---|
| 1033 | if (arg1.type === "SpreadElement") return;
|
|---|
| 1034 | const arg1Eval = this.evaluateExpression(arg1);
|
|---|
| 1035 | if (!arg1Eval.isString()) return;
|
|---|
| 1036 | const arg1Value = arg1Eval.string;
|
|---|
| 1037 |
|
|---|
| 1038 | let result;
|
|---|
| 1039 | if (arg2) {
|
|---|
| 1040 | if (arg2.type === "SpreadElement") return;
|
|---|
| 1041 | const arg2Eval = this.evaluateExpression(arg2);
|
|---|
| 1042 | if (!arg2Eval.isNumber()) return;
|
|---|
| 1043 | result = param.string.indexOf(arg1Value, arg2Eval.number);
|
|---|
| 1044 | } else {
|
|---|
| 1045 | result = param.string.indexOf(arg1Value);
|
|---|
| 1046 | }
|
|---|
| 1047 | return new BasicEvaluatedExpression()
|
|---|
| 1048 | .setNumber(result)
|
|---|
| 1049 | .setSideEffects(param.couldHaveSideEffects())
|
|---|
| 1050 | .setRange(expr.range);
|
|---|
| 1051 | });
|
|---|
| 1052 | this.hooks.evaluateCallExpressionMember
|
|---|
| 1053 | .for("replace")
|
|---|
| 1054 | .tap("JavascriptParser", (expr, param) => {
|
|---|
| 1055 | if (!param.isString()) return;
|
|---|
| 1056 | if (expr.arguments.length !== 2) return;
|
|---|
| 1057 | if (expr.arguments[0].type === "SpreadElement") return;
|
|---|
| 1058 | if (expr.arguments[1].type === "SpreadElement") return;
|
|---|
| 1059 | let arg1 = this.evaluateExpression(expr.arguments[0]);
|
|---|
| 1060 | let arg2 = this.evaluateExpression(expr.arguments[1]);
|
|---|
| 1061 | if (!arg1.isString() && !arg1.isRegExp()) return;
|
|---|
| 1062 | const arg1Value = arg1.regExp || arg1.string;
|
|---|
| 1063 | if (!arg2.isString()) return;
|
|---|
| 1064 | const arg2Value = arg2.string;
|
|---|
| 1065 | return new BasicEvaluatedExpression()
|
|---|
| 1066 | .setString(param.string.replace(arg1Value, arg2Value))
|
|---|
| 1067 | .setSideEffects(param.couldHaveSideEffects())
|
|---|
| 1068 | .setRange(expr.range);
|
|---|
| 1069 | });
|
|---|
| 1070 | ["substr", "substring", "slice"].forEach(fn => {
|
|---|
| 1071 | this.hooks.evaluateCallExpressionMember
|
|---|
| 1072 | .for(fn)
|
|---|
| 1073 | .tap("JavascriptParser", (expr, param) => {
|
|---|
| 1074 | if (!param.isString()) return;
|
|---|
| 1075 | let arg1;
|
|---|
| 1076 | let result,
|
|---|
| 1077 | str = param.string;
|
|---|
| 1078 | switch (expr.arguments.length) {
|
|---|
| 1079 | case 1:
|
|---|
| 1080 | if (expr.arguments[0].type === "SpreadElement") return;
|
|---|
| 1081 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
|---|
| 1082 | if (!arg1.isNumber()) return;
|
|---|
| 1083 | result = str[fn](arg1.number);
|
|---|
| 1084 | break;
|
|---|
| 1085 | case 2: {
|
|---|
| 1086 | if (expr.arguments[0].type === "SpreadElement") return;
|
|---|
| 1087 | if (expr.arguments[1].type === "SpreadElement") return;
|
|---|
| 1088 | arg1 = this.evaluateExpression(expr.arguments[0]);
|
|---|
| 1089 | const arg2 = this.evaluateExpression(expr.arguments[1]);
|
|---|
| 1090 | if (!arg1.isNumber()) return;
|
|---|
| 1091 | if (!arg2.isNumber()) return;
|
|---|
| 1092 | result = str[fn](arg1.number, arg2.number);
|
|---|
| 1093 | break;
|
|---|
| 1094 | }
|
|---|
| 1095 | default:
|
|---|
| 1096 | return;
|
|---|
| 1097 | }
|
|---|
| 1098 | return new BasicEvaluatedExpression()
|
|---|
| 1099 | .setString(result)
|
|---|
| 1100 | .setSideEffects(param.couldHaveSideEffects())
|
|---|
| 1101 | .setRange(expr.range);
|
|---|
| 1102 | });
|
|---|
| 1103 | });
|
|---|
| 1104 |
|
|---|
| 1105 | /**
|
|---|
| 1106 | * @param {"cooked" | "raw"} kind kind of values to get
|
|---|
| 1107 | * @param {TemplateLiteralNode} templateLiteralExpr TemplateLiteral expr
|
|---|
| 1108 | * @returns {{quasis: BasicEvaluatedExpression[], parts: BasicEvaluatedExpression[]}} Simplified template
|
|---|
| 1109 | */
|
|---|
| 1110 | const getSimplifiedTemplateResult = (kind, templateLiteralExpr) => {
|
|---|
| 1111 | /** @type {BasicEvaluatedExpression[]} */
|
|---|
| 1112 | const quasis = [];
|
|---|
| 1113 | /** @type {BasicEvaluatedExpression[]} */
|
|---|
| 1114 | const parts = [];
|
|---|
| 1115 |
|
|---|
| 1116 | for (let i = 0; i < templateLiteralExpr.quasis.length; i++) {
|
|---|
| 1117 | const quasiExpr = templateLiteralExpr.quasis[i];
|
|---|
| 1118 | const quasi = quasiExpr.value[kind];
|
|---|
| 1119 |
|
|---|
| 1120 | if (i > 0) {
|
|---|
| 1121 | const prevExpr = parts[parts.length - 1];
|
|---|
| 1122 | const expr = this.evaluateExpression(
|
|---|
| 1123 | templateLiteralExpr.expressions[i - 1]
|
|---|
| 1124 | );
|
|---|
| 1125 | const exprAsString = expr.asString();
|
|---|
| 1126 | if (
|
|---|
| 1127 | typeof exprAsString === "string" &&
|
|---|
| 1128 | !expr.couldHaveSideEffects()
|
|---|
| 1129 | ) {
|
|---|
| 1130 | // We can merge quasi + expr + quasi when expr
|
|---|
| 1131 | // is a const string
|
|---|
| 1132 |
|
|---|
| 1133 | prevExpr.setString(prevExpr.string + exprAsString + quasi);
|
|---|
| 1134 | prevExpr.setRange([prevExpr.range[0], quasiExpr.range[1]]);
|
|---|
| 1135 | // We unset the expression as it doesn't match to a single expression
|
|---|
| 1136 | prevExpr.setExpression(undefined);
|
|---|
| 1137 | continue;
|
|---|
| 1138 | }
|
|---|
| 1139 | parts.push(expr);
|
|---|
| 1140 | }
|
|---|
| 1141 |
|
|---|
| 1142 | const part = new BasicEvaluatedExpression()
|
|---|
| 1143 | .setString(quasi)
|
|---|
| 1144 | .setRange(quasiExpr.range)
|
|---|
| 1145 | .setExpression(quasiExpr);
|
|---|
| 1146 | quasis.push(part);
|
|---|
| 1147 | parts.push(part);
|
|---|
| 1148 | }
|
|---|
| 1149 | return {
|
|---|
| 1150 | quasis,
|
|---|
| 1151 | parts
|
|---|
| 1152 | };
|
|---|
| 1153 | };
|
|---|
| 1154 |
|
|---|
| 1155 | this.hooks.evaluate
|
|---|
| 1156 | .for("TemplateLiteral")
|
|---|
| 1157 | .tap("JavascriptParser", _node => {
|
|---|
| 1158 | const node = /** @type {TemplateLiteralNode} */ (_node);
|
|---|
| 1159 |
|
|---|
| 1160 | const { quasis, parts } = getSimplifiedTemplateResult("cooked", node);
|
|---|
| 1161 | if (parts.length === 1) {
|
|---|
| 1162 | return parts[0].setRange(node.range);
|
|---|
| 1163 | }
|
|---|
| 1164 | return new BasicEvaluatedExpression()
|
|---|
| 1165 | .setTemplateString(quasis, parts, "cooked")
|
|---|
| 1166 | .setRange(node.range);
|
|---|
| 1167 | });
|
|---|
| 1168 | this.hooks.evaluate
|
|---|
| 1169 | .for("TaggedTemplateExpression")
|
|---|
| 1170 | .tap("JavascriptParser", _node => {
|
|---|
| 1171 | const node = /** @type {TaggedTemplateExpressionNode} */ (_node);
|
|---|
| 1172 | const tag = this.evaluateExpression(node.tag);
|
|---|
| 1173 |
|
|---|
| 1174 | if (tag.isIdentifier() && tag.identifier !== "String.raw") return;
|
|---|
| 1175 | const { quasis, parts } = getSimplifiedTemplateResult(
|
|---|
| 1176 | "raw",
|
|---|
| 1177 | node.quasi
|
|---|
| 1178 | );
|
|---|
| 1179 | return new BasicEvaluatedExpression()
|
|---|
| 1180 | .setTemplateString(quasis, parts, "raw")
|
|---|
| 1181 | .setRange(node.range);
|
|---|
| 1182 | });
|
|---|
| 1183 |
|
|---|
| 1184 | this.hooks.evaluateCallExpressionMember
|
|---|
| 1185 | .for("concat")
|
|---|
| 1186 | .tap("JavascriptParser", (expr, param) => {
|
|---|
| 1187 | if (!param.isString() && !param.isWrapped()) return;
|
|---|
| 1188 |
|
|---|
| 1189 | let stringSuffix = null;
|
|---|
| 1190 | let hasUnknownParams = false;
|
|---|
| 1191 | const innerExpressions = [];
|
|---|
| 1192 | for (let i = expr.arguments.length - 1; i >= 0; i--) {
|
|---|
| 1193 | const arg = expr.arguments[i];
|
|---|
| 1194 | if (arg.type === "SpreadElement") return;
|
|---|
| 1195 | const argExpr = this.evaluateExpression(arg);
|
|---|
| 1196 | if (
|
|---|
| 1197 | hasUnknownParams ||
|
|---|
| 1198 | (!argExpr.isString() && !argExpr.isNumber())
|
|---|
| 1199 | ) {
|
|---|
| 1200 | hasUnknownParams = true;
|
|---|
| 1201 | innerExpressions.push(argExpr);
|
|---|
| 1202 | continue;
|
|---|
| 1203 | }
|
|---|
| 1204 |
|
|---|
| 1205 | const value = argExpr.isString()
|
|---|
| 1206 | ? argExpr.string
|
|---|
| 1207 | : "" + argExpr.number;
|
|---|
| 1208 |
|
|---|
| 1209 | const newString = value + (stringSuffix ? stringSuffix.string : "");
|
|---|
| 1210 | const newRange = [
|
|---|
| 1211 | argExpr.range[0],
|
|---|
| 1212 | (stringSuffix || argExpr).range[1]
|
|---|
| 1213 | ];
|
|---|
| 1214 | stringSuffix = new BasicEvaluatedExpression()
|
|---|
| 1215 | .setString(newString)
|
|---|
| 1216 | .setSideEffects(
|
|---|
| 1217 | (stringSuffix && stringSuffix.couldHaveSideEffects()) ||
|
|---|
| 1218 | argExpr.couldHaveSideEffects()
|
|---|
| 1219 | )
|
|---|
| 1220 | .setRange(newRange);
|
|---|
| 1221 | }
|
|---|
| 1222 |
|
|---|
| 1223 | if (hasUnknownParams) {
|
|---|
| 1224 | const prefix = param.isString() ? param : param.prefix;
|
|---|
| 1225 | const inner =
|
|---|
| 1226 | param.isWrapped() && param.wrappedInnerExpressions
|
|---|
| 1227 | ? param.wrappedInnerExpressions.concat(innerExpressions.reverse())
|
|---|
| 1228 | : innerExpressions.reverse();
|
|---|
| 1229 | return new BasicEvaluatedExpression()
|
|---|
| 1230 | .setWrapped(prefix, stringSuffix, inner)
|
|---|
| 1231 | .setRange(expr.range);
|
|---|
| 1232 | } else if (param.isWrapped()) {
|
|---|
| 1233 | const postfix = stringSuffix || param.postfix;
|
|---|
| 1234 | const inner = param.wrappedInnerExpressions
|
|---|
| 1235 | ? param.wrappedInnerExpressions.concat(innerExpressions.reverse())
|
|---|
| 1236 | : innerExpressions.reverse();
|
|---|
| 1237 | return new BasicEvaluatedExpression()
|
|---|
| 1238 | .setWrapped(param.prefix, postfix, inner)
|
|---|
| 1239 | .setRange(expr.range);
|
|---|
| 1240 | } else {
|
|---|
| 1241 | const newString =
|
|---|
| 1242 | param.string + (stringSuffix ? stringSuffix.string : "");
|
|---|
| 1243 | return new BasicEvaluatedExpression()
|
|---|
| 1244 | .setString(newString)
|
|---|
| 1245 | .setSideEffects(
|
|---|
| 1246 | (stringSuffix && stringSuffix.couldHaveSideEffects()) ||
|
|---|
| 1247 | param.couldHaveSideEffects()
|
|---|
| 1248 | )
|
|---|
| 1249 | .setRange(expr.range);
|
|---|
| 1250 | }
|
|---|
| 1251 | });
|
|---|
| 1252 | this.hooks.evaluateCallExpressionMember
|
|---|
| 1253 | .for("split")
|
|---|
| 1254 | .tap("JavascriptParser", (expr, param) => {
|
|---|
| 1255 | if (!param.isString()) return;
|
|---|
| 1256 | if (expr.arguments.length !== 1) return;
|
|---|
| 1257 | if (expr.arguments[0].type === "SpreadElement") return;
|
|---|
| 1258 | let result;
|
|---|
| 1259 | const arg = this.evaluateExpression(expr.arguments[0]);
|
|---|
| 1260 | if (arg.isString()) {
|
|---|
| 1261 | result = param.string.split(arg.string);
|
|---|
| 1262 | } else if (arg.isRegExp()) {
|
|---|
| 1263 | result = param.string.split(arg.regExp);
|
|---|
| 1264 | } else {
|
|---|
| 1265 | return;
|
|---|
| 1266 | }
|
|---|
| 1267 | return new BasicEvaluatedExpression()
|
|---|
| 1268 | .setArray(result)
|
|---|
| 1269 | .setSideEffects(param.couldHaveSideEffects())
|
|---|
| 1270 | .setRange(expr.range);
|
|---|
| 1271 | });
|
|---|
| 1272 | this.hooks.evaluate
|
|---|
| 1273 | .for("ConditionalExpression")
|
|---|
| 1274 | .tap("JavascriptParser", _expr => {
|
|---|
| 1275 | const expr = /** @type {ConditionalExpressionNode} */ (_expr);
|
|---|
| 1276 |
|
|---|
| 1277 | const condition = this.evaluateExpression(expr.test);
|
|---|
| 1278 | const conditionValue = condition.asBool();
|
|---|
| 1279 | let res;
|
|---|
| 1280 | if (conditionValue === undefined) {
|
|---|
| 1281 | const consequent = this.evaluateExpression(expr.consequent);
|
|---|
| 1282 | const alternate = this.evaluateExpression(expr.alternate);
|
|---|
| 1283 | if (!consequent || !alternate) return;
|
|---|
| 1284 | res = new BasicEvaluatedExpression();
|
|---|
| 1285 | if (consequent.isConditional()) {
|
|---|
| 1286 | res.setOptions(consequent.options);
|
|---|
| 1287 | } else {
|
|---|
| 1288 | res.setOptions([consequent]);
|
|---|
| 1289 | }
|
|---|
| 1290 | if (alternate.isConditional()) {
|
|---|
| 1291 | res.addOptions(alternate.options);
|
|---|
| 1292 | } else {
|
|---|
| 1293 | res.addOptions([alternate]);
|
|---|
| 1294 | }
|
|---|
| 1295 | } else {
|
|---|
| 1296 | res = this.evaluateExpression(
|
|---|
| 1297 | conditionValue ? expr.consequent : expr.alternate
|
|---|
| 1298 | );
|
|---|
| 1299 | if (condition.couldHaveSideEffects()) res.setSideEffects();
|
|---|
| 1300 | }
|
|---|
| 1301 | res.setRange(expr.range);
|
|---|
| 1302 | return res;
|
|---|
| 1303 | });
|
|---|
| 1304 | this.hooks.evaluate
|
|---|
| 1305 | .for("ArrayExpression")
|
|---|
| 1306 | .tap("JavascriptParser", _expr => {
|
|---|
| 1307 | const expr = /** @type {ArrayExpressionNode} */ (_expr);
|
|---|
| 1308 |
|
|---|
| 1309 | const items = expr.elements.map(element => {
|
|---|
| 1310 | return (
|
|---|
| 1311 | element !== null &&
|
|---|
| 1312 | element.type !== "SpreadElement" &&
|
|---|
| 1313 | this.evaluateExpression(element)
|
|---|
| 1314 | );
|
|---|
| 1315 | });
|
|---|
| 1316 | if (!items.every(Boolean)) return;
|
|---|
| 1317 | return new BasicEvaluatedExpression()
|
|---|
| 1318 | .setItems(items)
|
|---|
| 1319 | .setRange(expr.range);
|
|---|
| 1320 | });
|
|---|
| 1321 | this.hooks.evaluate
|
|---|
| 1322 | .for("ChainExpression")
|
|---|
| 1323 | .tap("JavascriptParser", _expr => {
|
|---|
| 1324 | const expr = /** @type {ChainExpressionNode} */ (_expr);
|
|---|
| 1325 | /** @type {ExpressionNode[]} */
|
|---|
| 1326 | const optionalExpressionsStack = [];
|
|---|
| 1327 | /** @type {ExpressionNode|SuperNode} */
|
|---|
| 1328 | let next = expr.expression;
|
|---|
| 1329 |
|
|---|
| 1330 | while (
|
|---|
| 1331 | next.type === "MemberExpression" ||
|
|---|
| 1332 | next.type === "CallExpression"
|
|---|
| 1333 | ) {
|
|---|
| 1334 | if (next.type === "MemberExpression") {
|
|---|
| 1335 | if (next.optional) {
|
|---|
| 1336 | // SuperNode can not be optional
|
|---|
| 1337 | optionalExpressionsStack.push(
|
|---|
| 1338 | /** @type {ExpressionNode} */ (next.object)
|
|---|
| 1339 | );
|
|---|
| 1340 | }
|
|---|
| 1341 | next = next.object;
|
|---|
| 1342 | } else {
|
|---|
| 1343 | if (next.optional) {
|
|---|
| 1344 | // SuperNode can not be optional
|
|---|
| 1345 | optionalExpressionsStack.push(
|
|---|
| 1346 | /** @type {ExpressionNode} */ (next.callee)
|
|---|
| 1347 | );
|
|---|
| 1348 | }
|
|---|
| 1349 | next = next.callee;
|
|---|
| 1350 | }
|
|---|
| 1351 | }
|
|---|
| 1352 |
|
|---|
| 1353 | while (optionalExpressionsStack.length > 0) {
|
|---|
| 1354 | const expression = optionalExpressionsStack.pop();
|
|---|
| 1355 | const evaluated = this.evaluateExpression(expression);
|
|---|
| 1356 |
|
|---|
| 1357 | if (evaluated && evaluated.asNullish()) {
|
|---|
| 1358 | return evaluated.setRange(_expr.range);
|
|---|
| 1359 | }
|
|---|
| 1360 | }
|
|---|
| 1361 | return this.evaluateExpression(expr.expression);
|
|---|
| 1362 | });
|
|---|
| 1363 | }
|
|---|
| 1364 |
|
|---|
| 1365 | getRenameIdentifier(expr) {
|
|---|
| 1366 | const result = this.evaluateExpression(expr);
|
|---|
| 1367 | if (result && result.isIdentifier()) {
|
|---|
| 1368 | return result.identifier;
|
|---|
| 1369 | }
|
|---|
| 1370 | }
|
|---|
| 1371 |
|
|---|
| 1372 | /**
|
|---|
| 1373 | * @param {ClassExpressionNode | ClassDeclarationNode} classy a class node
|
|---|
| 1374 | * @returns {void}
|
|---|
| 1375 | */
|
|---|
| 1376 | walkClass(classy) {
|
|---|
| 1377 | if (classy.superClass) {
|
|---|
| 1378 | if (!this.hooks.classExtendsExpression.call(classy.superClass, classy)) {
|
|---|
| 1379 | this.walkExpression(classy.superClass);
|
|---|
| 1380 | }
|
|---|
| 1381 | }
|
|---|
| 1382 | if (classy.body && classy.body.type === "ClassBody") {
|
|---|
| 1383 | for (const classElement of /** @type {TODO} */ (classy.body.body)) {
|
|---|
| 1384 | if (!this.hooks.classBodyElement.call(classElement, classy)) {
|
|---|
| 1385 | if (classElement.computed && classElement.key) {
|
|---|
| 1386 | this.walkExpression(classElement.key);
|
|---|
| 1387 | }
|
|---|
| 1388 | if (classElement.value) {
|
|---|
| 1389 | if (
|
|---|
| 1390 | !this.hooks.classBodyValue.call(
|
|---|
| 1391 | classElement.value,
|
|---|
| 1392 | classElement,
|
|---|
| 1393 | classy
|
|---|
| 1394 | )
|
|---|
| 1395 | ) {
|
|---|
| 1396 | const wasTopLevel = this.scope.topLevelScope;
|
|---|
| 1397 | this.scope.topLevelScope = false;
|
|---|
| 1398 | this.walkExpression(classElement.value);
|
|---|
| 1399 | this.scope.topLevelScope = wasTopLevel;
|
|---|
| 1400 | }
|
|---|
| 1401 | }
|
|---|
| 1402 | }
|
|---|
| 1403 | }
|
|---|
| 1404 | }
|
|---|
| 1405 | }
|
|---|
| 1406 |
|
|---|
| 1407 | // Pre walking iterates the scope for variable declarations
|
|---|
| 1408 | preWalkStatements(statements) {
|
|---|
| 1409 | for (let index = 0, len = statements.length; index < len; index++) {
|
|---|
| 1410 | const statement = statements[index];
|
|---|
| 1411 | this.preWalkStatement(statement);
|
|---|
| 1412 | }
|
|---|
| 1413 | }
|
|---|
| 1414 |
|
|---|
| 1415 | // Block pre walking iterates the scope for block variable declarations
|
|---|
| 1416 | blockPreWalkStatements(statements) {
|
|---|
| 1417 | for (let index = 0, len = statements.length; index < len; index++) {
|
|---|
| 1418 | const statement = statements[index];
|
|---|
| 1419 | this.blockPreWalkStatement(statement);
|
|---|
| 1420 | }
|
|---|
| 1421 | }
|
|---|
| 1422 |
|
|---|
| 1423 | // Walking iterates the statements and expressions and processes them
|
|---|
| 1424 | walkStatements(statements) {
|
|---|
| 1425 | for (let index = 0, len = statements.length; index < len; index++) {
|
|---|
| 1426 | const statement = statements[index];
|
|---|
| 1427 | this.walkStatement(statement);
|
|---|
| 1428 | }
|
|---|
| 1429 | }
|
|---|
| 1430 |
|
|---|
| 1431 | preWalkStatement(statement) {
|
|---|
| 1432 | this.statementPath.push(statement);
|
|---|
| 1433 | if (this.hooks.preStatement.call(statement)) {
|
|---|
| 1434 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1435 | return;
|
|---|
| 1436 | }
|
|---|
| 1437 | switch (statement.type) {
|
|---|
| 1438 | case "BlockStatement":
|
|---|
| 1439 | this.preWalkBlockStatement(statement);
|
|---|
| 1440 | break;
|
|---|
| 1441 | case "DoWhileStatement":
|
|---|
| 1442 | this.preWalkDoWhileStatement(statement);
|
|---|
| 1443 | break;
|
|---|
| 1444 | case "ForInStatement":
|
|---|
| 1445 | this.preWalkForInStatement(statement);
|
|---|
| 1446 | break;
|
|---|
| 1447 | case "ForOfStatement":
|
|---|
| 1448 | this.preWalkForOfStatement(statement);
|
|---|
| 1449 | break;
|
|---|
| 1450 | case "ForStatement":
|
|---|
| 1451 | this.preWalkForStatement(statement);
|
|---|
| 1452 | break;
|
|---|
| 1453 | case "FunctionDeclaration":
|
|---|
| 1454 | this.preWalkFunctionDeclaration(statement);
|
|---|
| 1455 | break;
|
|---|
| 1456 | case "IfStatement":
|
|---|
| 1457 | this.preWalkIfStatement(statement);
|
|---|
| 1458 | break;
|
|---|
| 1459 | case "LabeledStatement":
|
|---|
| 1460 | this.preWalkLabeledStatement(statement);
|
|---|
| 1461 | break;
|
|---|
| 1462 | case "SwitchStatement":
|
|---|
| 1463 | this.preWalkSwitchStatement(statement);
|
|---|
| 1464 | break;
|
|---|
| 1465 | case "TryStatement":
|
|---|
| 1466 | this.preWalkTryStatement(statement);
|
|---|
| 1467 | break;
|
|---|
| 1468 | case "VariableDeclaration":
|
|---|
| 1469 | this.preWalkVariableDeclaration(statement);
|
|---|
| 1470 | break;
|
|---|
| 1471 | case "WhileStatement":
|
|---|
| 1472 | this.preWalkWhileStatement(statement);
|
|---|
| 1473 | break;
|
|---|
| 1474 | case "WithStatement":
|
|---|
| 1475 | this.preWalkWithStatement(statement);
|
|---|
| 1476 | break;
|
|---|
| 1477 | }
|
|---|
| 1478 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1479 | }
|
|---|
| 1480 |
|
|---|
| 1481 | blockPreWalkStatement(statement) {
|
|---|
| 1482 | this.statementPath.push(statement);
|
|---|
| 1483 | if (this.hooks.blockPreStatement.call(statement)) {
|
|---|
| 1484 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1485 | return;
|
|---|
| 1486 | }
|
|---|
| 1487 | switch (statement.type) {
|
|---|
| 1488 | case "ImportDeclaration":
|
|---|
| 1489 | this.blockPreWalkImportDeclaration(statement);
|
|---|
| 1490 | break;
|
|---|
| 1491 | case "ExportAllDeclaration":
|
|---|
| 1492 | this.blockPreWalkExportAllDeclaration(statement);
|
|---|
| 1493 | break;
|
|---|
| 1494 | case "ExportDefaultDeclaration":
|
|---|
| 1495 | this.blockPreWalkExportDefaultDeclaration(statement);
|
|---|
| 1496 | break;
|
|---|
| 1497 | case "ExportNamedDeclaration":
|
|---|
| 1498 | this.blockPreWalkExportNamedDeclaration(statement);
|
|---|
| 1499 | break;
|
|---|
| 1500 | case "VariableDeclaration":
|
|---|
| 1501 | this.blockPreWalkVariableDeclaration(statement);
|
|---|
| 1502 | break;
|
|---|
| 1503 | case "ClassDeclaration":
|
|---|
| 1504 | this.blockPreWalkClassDeclaration(statement);
|
|---|
| 1505 | break;
|
|---|
| 1506 | }
|
|---|
| 1507 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1508 | }
|
|---|
| 1509 |
|
|---|
| 1510 | walkStatement(statement) {
|
|---|
| 1511 | this.statementPath.push(statement);
|
|---|
| 1512 | if (this.hooks.statement.call(statement) !== undefined) {
|
|---|
| 1513 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1514 | return;
|
|---|
| 1515 | }
|
|---|
| 1516 | switch (statement.type) {
|
|---|
| 1517 | case "BlockStatement":
|
|---|
| 1518 | this.walkBlockStatement(statement);
|
|---|
| 1519 | break;
|
|---|
| 1520 | case "ClassDeclaration":
|
|---|
| 1521 | this.walkClassDeclaration(statement);
|
|---|
| 1522 | break;
|
|---|
| 1523 | case "DoWhileStatement":
|
|---|
| 1524 | this.walkDoWhileStatement(statement);
|
|---|
| 1525 | break;
|
|---|
| 1526 | case "ExportDefaultDeclaration":
|
|---|
| 1527 | this.walkExportDefaultDeclaration(statement);
|
|---|
| 1528 | break;
|
|---|
| 1529 | case "ExportNamedDeclaration":
|
|---|
| 1530 | this.walkExportNamedDeclaration(statement);
|
|---|
| 1531 | break;
|
|---|
| 1532 | case "ExpressionStatement":
|
|---|
| 1533 | this.walkExpressionStatement(statement);
|
|---|
| 1534 | break;
|
|---|
| 1535 | case "ForInStatement":
|
|---|
| 1536 | this.walkForInStatement(statement);
|
|---|
| 1537 | break;
|
|---|
| 1538 | case "ForOfStatement":
|
|---|
| 1539 | this.walkForOfStatement(statement);
|
|---|
| 1540 | break;
|
|---|
| 1541 | case "ForStatement":
|
|---|
| 1542 | this.walkForStatement(statement);
|
|---|
| 1543 | break;
|
|---|
| 1544 | case "FunctionDeclaration":
|
|---|
| 1545 | this.walkFunctionDeclaration(statement);
|
|---|
| 1546 | break;
|
|---|
| 1547 | case "IfStatement":
|
|---|
| 1548 | this.walkIfStatement(statement);
|
|---|
| 1549 | break;
|
|---|
| 1550 | case "LabeledStatement":
|
|---|
| 1551 | this.walkLabeledStatement(statement);
|
|---|
| 1552 | break;
|
|---|
| 1553 | case "ReturnStatement":
|
|---|
| 1554 | this.walkReturnStatement(statement);
|
|---|
| 1555 | break;
|
|---|
| 1556 | case "SwitchStatement":
|
|---|
| 1557 | this.walkSwitchStatement(statement);
|
|---|
| 1558 | break;
|
|---|
| 1559 | case "ThrowStatement":
|
|---|
| 1560 | this.walkThrowStatement(statement);
|
|---|
| 1561 | break;
|
|---|
| 1562 | case "TryStatement":
|
|---|
| 1563 | this.walkTryStatement(statement);
|
|---|
| 1564 | break;
|
|---|
| 1565 | case "VariableDeclaration":
|
|---|
| 1566 | this.walkVariableDeclaration(statement);
|
|---|
| 1567 | break;
|
|---|
| 1568 | case "WhileStatement":
|
|---|
| 1569 | this.walkWhileStatement(statement);
|
|---|
| 1570 | break;
|
|---|
| 1571 | case "WithStatement":
|
|---|
| 1572 | this.walkWithStatement(statement);
|
|---|
| 1573 | break;
|
|---|
| 1574 | }
|
|---|
| 1575 | this.prevStatement = this.statementPath.pop();
|
|---|
| 1576 | }
|
|---|
| 1577 |
|
|---|
| 1578 | /**
|
|---|
| 1579 | * Walks a statements that is nested within a parent statement
|
|---|
| 1580 | * and can potentially be a non-block statement.
|
|---|
| 1581 | * This enforces the nested statement to never be in ASI position.
|
|---|
| 1582 | * @param {StatementNode} statement the nested statement
|
|---|
| 1583 | * @returns {void}
|
|---|
| 1584 | */
|
|---|
| 1585 | walkNestedStatement(statement) {
|
|---|
| 1586 | this.prevStatement = undefined;
|
|---|
| 1587 | this.walkStatement(statement);
|
|---|
| 1588 | }
|
|---|
| 1589 |
|
|---|
| 1590 | // Real Statements
|
|---|
| 1591 | preWalkBlockStatement(statement) {
|
|---|
| 1592 | this.preWalkStatements(statement.body);
|
|---|
| 1593 | }
|
|---|
| 1594 |
|
|---|
| 1595 | walkBlockStatement(statement) {
|
|---|
| 1596 | this.inBlockScope(() => {
|
|---|
| 1597 | const body = statement.body;
|
|---|
| 1598 | const prev = this.prevStatement;
|
|---|
| 1599 | this.blockPreWalkStatements(body);
|
|---|
| 1600 | this.prevStatement = prev;
|
|---|
| 1601 | this.walkStatements(body);
|
|---|
| 1602 | });
|
|---|
| 1603 | }
|
|---|
| 1604 |
|
|---|
| 1605 | walkExpressionStatement(statement) {
|
|---|
| 1606 | this.walkExpression(statement.expression);
|
|---|
| 1607 | }
|
|---|
| 1608 |
|
|---|
| 1609 | preWalkIfStatement(statement) {
|
|---|
| 1610 | this.preWalkStatement(statement.consequent);
|
|---|
| 1611 | if (statement.alternate) {
|
|---|
| 1612 | this.preWalkStatement(statement.alternate);
|
|---|
| 1613 | }
|
|---|
| 1614 | }
|
|---|
| 1615 |
|
|---|
| 1616 | walkIfStatement(statement) {
|
|---|
| 1617 | const result = this.hooks.statementIf.call(statement);
|
|---|
| 1618 | if (result === undefined) {
|
|---|
| 1619 | this.walkExpression(statement.test);
|
|---|
| 1620 | this.walkNestedStatement(statement.consequent);
|
|---|
| 1621 | if (statement.alternate) {
|
|---|
| 1622 | this.walkNestedStatement(statement.alternate);
|
|---|
| 1623 | }
|
|---|
| 1624 | } else {
|
|---|
| 1625 | if (result) {
|
|---|
| 1626 | this.walkNestedStatement(statement.consequent);
|
|---|
| 1627 | } else if (statement.alternate) {
|
|---|
| 1628 | this.walkNestedStatement(statement.alternate);
|
|---|
| 1629 | }
|
|---|
| 1630 | }
|
|---|
| 1631 | }
|
|---|
| 1632 |
|
|---|
| 1633 | preWalkLabeledStatement(statement) {
|
|---|
| 1634 | this.preWalkStatement(statement.body);
|
|---|
| 1635 | }
|
|---|
| 1636 |
|
|---|
| 1637 | walkLabeledStatement(statement) {
|
|---|
| 1638 | const hook = this.hooks.label.get(statement.label.name);
|
|---|
| 1639 | if (hook !== undefined) {
|
|---|
| 1640 | const result = hook.call(statement);
|
|---|
| 1641 | if (result === true) return;
|
|---|
| 1642 | }
|
|---|
| 1643 | this.walkNestedStatement(statement.body);
|
|---|
| 1644 | }
|
|---|
| 1645 |
|
|---|
| 1646 | preWalkWithStatement(statement) {
|
|---|
| 1647 | this.preWalkStatement(statement.body);
|
|---|
| 1648 | }
|
|---|
| 1649 |
|
|---|
| 1650 | walkWithStatement(statement) {
|
|---|
| 1651 | this.walkExpression(statement.object);
|
|---|
| 1652 | this.walkNestedStatement(statement.body);
|
|---|
| 1653 | }
|
|---|
| 1654 |
|
|---|
| 1655 | preWalkSwitchStatement(statement) {
|
|---|
| 1656 | this.preWalkSwitchCases(statement.cases);
|
|---|
| 1657 | }
|
|---|
| 1658 |
|
|---|
| 1659 | walkSwitchStatement(statement) {
|
|---|
| 1660 | this.walkExpression(statement.discriminant);
|
|---|
| 1661 | this.walkSwitchCases(statement.cases);
|
|---|
| 1662 | }
|
|---|
| 1663 |
|
|---|
| 1664 | walkTerminatingStatement(statement) {
|
|---|
| 1665 | if (statement.argument) this.walkExpression(statement.argument);
|
|---|
| 1666 | }
|
|---|
| 1667 |
|
|---|
| 1668 | walkReturnStatement(statement) {
|
|---|
| 1669 | this.walkTerminatingStatement(statement);
|
|---|
| 1670 | }
|
|---|
| 1671 |
|
|---|
| 1672 | walkThrowStatement(statement) {
|
|---|
| 1673 | this.walkTerminatingStatement(statement);
|
|---|
| 1674 | }
|
|---|
| 1675 |
|
|---|
| 1676 | preWalkTryStatement(statement) {
|
|---|
| 1677 | this.preWalkStatement(statement.block);
|
|---|
| 1678 | if (statement.handler) this.preWalkCatchClause(statement.handler);
|
|---|
| 1679 | if (statement.finializer) this.preWalkStatement(statement.finializer);
|
|---|
| 1680 | }
|
|---|
| 1681 |
|
|---|
| 1682 | walkTryStatement(statement) {
|
|---|
| 1683 | if (this.scope.inTry) {
|
|---|
| 1684 | this.walkStatement(statement.block);
|
|---|
| 1685 | } else {
|
|---|
| 1686 | this.scope.inTry = true;
|
|---|
| 1687 | this.walkStatement(statement.block);
|
|---|
| 1688 | this.scope.inTry = false;
|
|---|
| 1689 | }
|
|---|
| 1690 | if (statement.handler) this.walkCatchClause(statement.handler);
|
|---|
| 1691 | if (statement.finalizer) this.walkStatement(statement.finalizer);
|
|---|
| 1692 | }
|
|---|
| 1693 |
|
|---|
| 1694 | preWalkWhileStatement(statement) {
|
|---|
| 1695 | this.preWalkStatement(statement.body);
|
|---|
| 1696 | }
|
|---|
| 1697 |
|
|---|
| 1698 | walkWhileStatement(statement) {
|
|---|
| 1699 | this.walkExpression(statement.test);
|
|---|
| 1700 | this.walkNestedStatement(statement.body);
|
|---|
| 1701 | }
|
|---|
| 1702 |
|
|---|
| 1703 | preWalkDoWhileStatement(statement) {
|
|---|
| 1704 | this.preWalkStatement(statement.body);
|
|---|
| 1705 | }
|
|---|
| 1706 |
|
|---|
| 1707 | walkDoWhileStatement(statement) {
|
|---|
| 1708 | this.walkNestedStatement(statement.body);
|
|---|
| 1709 | this.walkExpression(statement.test);
|
|---|
| 1710 | }
|
|---|
| 1711 |
|
|---|
| 1712 | preWalkForStatement(statement) {
|
|---|
| 1713 | if (statement.init) {
|
|---|
| 1714 | if (statement.init.type === "VariableDeclaration") {
|
|---|
| 1715 | this.preWalkStatement(statement.init);
|
|---|
| 1716 | }
|
|---|
| 1717 | }
|
|---|
| 1718 | this.preWalkStatement(statement.body);
|
|---|
| 1719 | }
|
|---|
| 1720 |
|
|---|
| 1721 | walkForStatement(statement) {
|
|---|
| 1722 | this.inBlockScope(() => {
|
|---|
| 1723 | if (statement.init) {
|
|---|
| 1724 | if (statement.init.type === "VariableDeclaration") {
|
|---|
| 1725 | this.blockPreWalkVariableDeclaration(statement.init);
|
|---|
| 1726 | this.prevStatement = undefined;
|
|---|
| 1727 | this.walkStatement(statement.init);
|
|---|
| 1728 | } else {
|
|---|
| 1729 | this.walkExpression(statement.init);
|
|---|
| 1730 | }
|
|---|
| 1731 | }
|
|---|
| 1732 | if (statement.test) {
|
|---|
| 1733 | this.walkExpression(statement.test);
|
|---|
| 1734 | }
|
|---|
| 1735 | if (statement.update) {
|
|---|
| 1736 | this.walkExpression(statement.update);
|
|---|
| 1737 | }
|
|---|
| 1738 | const body = statement.body;
|
|---|
| 1739 | if (body.type === "BlockStatement") {
|
|---|
| 1740 | // no need to add additional scope
|
|---|
| 1741 | const prev = this.prevStatement;
|
|---|
| 1742 | this.blockPreWalkStatements(body.body);
|
|---|
| 1743 | this.prevStatement = prev;
|
|---|
| 1744 | this.walkStatements(body.body);
|
|---|
| 1745 | } else {
|
|---|
| 1746 | this.walkNestedStatement(body);
|
|---|
| 1747 | }
|
|---|
| 1748 | });
|
|---|
| 1749 | }
|
|---|
| 1750 |
|
|---|
| 1751 | preWalkForInStatement(statement) {
|
|---|
| 1752 | if (statement.left.type === "VariableDeclaration") {
|
|---|
| 1753 | this.preWalkVariableDeclaration(statement.left);
|
|---|
| 1754 | }
|
|---|
| 1755 | this.preWalkStatement(statement.body);
|
|---|
| 1756 | }
|
|---|
| 1757 |
|
|---|
| 1758 | walkForInStatement(statement) {
|
|---|
| 1759 | this.inBlockScope(() => {
|
|---|
| 1760 | if (statement.left.type === "VariableDeclaration") {
|
|---|
| 1761 | this.blockPreWalkVariableDeclaration(statement.left);
|
|---|
| 1762 | this.walkVariableDeclaration(statement.left);
|
|---|
| 1763 | } else {
|
|---|
| 1764 | this.walkPattern(statement.left);
|
|---|
| 1765 | }
|
|---|
| 1766 | this.walkExpression(statement.right);
|
|---|
| 1767 | const body = statement.body;
|
|---|
| 1768 | if (body.type === "BlockStatement") {
|
|---|
| 1769 | // no need to add additional scope
|
|---|
| 1770 | const prev = this.prevStatement;
|
|---|
| 1771 | this.blockPreWalkStatements(body.body);
|
|---|
| 1772 | this.prevStatement = prev;
|
|---|
| 1773 | this.walkStatements(body.body);
|
|---|
| 1774 | } else {
|
|---|
| 1775 | this.walkNestedStatement(body);
|
|---|
| 1776 | }
|
|---|
| 1777 | });
|
|---|
| 1778 | }
|
|---|
| 1779 |
|
|---|
| 1780 | preWalkForOfStatement(statement) {
|
|---|
| 1781 | if (statement.await && this.scope.topLevelScope === true) {
|
|---|
| 1782 | this.hooks.topLevelAwait.call(statement);
|
|---|
| 1783 | }
|
|---|
| 1784 | if (statement.left.type === "VariableDeclaration") {
|
|---|
| 1785 | this.preWalkVariableDeclaration(statement.left);
|
|---|
| 1786 | }
|
|---|
| 1787 | this.preWalkStatement(statement.body);
|
|---|
| 1788 | }
|
|---|
| 1789 |
|
|---|
| 1790 | walkForOfStatement(statement) {
|
|---|
| 1791 | this.inBlockScope(() => {
|
|---|
| 1792 | if (statement.left.type === "VariableDeclaration") {
|
|---|
| 1793 | this.blockPreWalkVariableDeclaration(statement.left);
|
|---|
| 1794 | this.walkVariableDeclaration(statement.left);
|
|---|
| 1795 | } else {
|
|---|
| 1796 | this.walkPattern(statement.left);
|
|---|
| 1797 | }
|
|---|
| 1798 | this.walkExpression(statement.right);
|
|---|
| 1799 | const body = statement.body;
|
|---|
| 1800 | if (body.type === "BlockStatement") {
|
|---|
| 1801 | // no need to add additional scope
|
|---|
| 1802 | const prev = this.prevStatement;
|
|---|
| 1803 | this.blockPreWalkStatements(body.body);
|
|---|
| 1804 | this.prevStatement = prev;
|
|---|
| 1805 | this.walkStatements(body.body);
|
|---|
| 1806 | } else {
|
|---|
| 1807 | this.walkNestedStatement(body);
|
|---|
| 1808 | }
|
|---|
| 1809 | });
|
|---|
| 1810 | }
|
|---|
| 1811 |
|
|---|
| 1812 | // Declarations
|
|---|
| 1813 | preWalkFunctionDeclaration(statement) {
|
|---|
| 1814 | if (statement.id) {
|
|---|
| 1815 | this.defineVariable(statement.id.name);
|
|---|
| 1816 | }
|
|---|
| 1817 | }
|
|---|
| 1818 |
|
|---|
| 1819 | walkFunctionDeclaration(statement) {
|
|---|
| 1820 | const wasTopLevel = this.scope.topLevelScope;
|
|---|
| 1821 | this.scope.topLevelScope = false;
|
|---|
| 1822 | this.inFunctionScope(true, statement.params, () => {
|
|---|
| 1823 | for (const param of statement.params) {
|
|---|
| 1824 | this.walkPattern(param);
|
|---|
| 1825 | }
|
|---|
| 1826 | if (statement.body.type === "BlockStatement") {
|
|---|
| 1827 | this.detectMode(statement.body.body);
|
|---|
| 1828 | const prev = this.prevStatement;
|
|---|
| 1829 | this.preWalkStatement(statement.body);
|
|---|
| 1830 | this.prevStatement = prev;
|
|---|
| 1831 | this.walkStatement(statement.body);
|
|---|
| 1832 | } else {
|
|---|
| 1833 | this.walkExpression(statement.body);
|
|---|
| 1834 | }
|
|---|
| 1835 | });
|
|---|
| 1836 | this.scope.topLevelScope = wasTopLevel;
|
|---|
| 1837 | }
|
|---|
| 1838 |
|
|---|
| 1839 | blockPreWalkImportDeclaration(statement) {
|
|---|
| 1840 | const source = statement.source.value;
|
|---|
| 1841 | this.hooks.import.call(statement, source);
|
|---|
| 1842 | for (const specifier of statement.specifiers) {
|
|---|
| 1843 | const name = specifier.local.name;
|
|---|
| 1844 | switch (specifier.type) {
|
|---|
| 1845 | case "ImportDefaultSpecifier":
|
|---|
| 1846 | if (
|
|---|
| 1847 | !this.hooks.importSpecifier.call(statement, source, "default", name)
|
|---|
| 1848 | ) {
|
|---|
| 1849 | this.defineVariable(name);
|
|---|
| 1850 | }
|
|---|
| 1851 | break;
|
|---|
| 1852 | case "ImportSpecifier":
|
|---|
| 1853 | if (
|
|---|
| 1854 | !this.hooks.importSpecifier.call(
|
|---|
| 1855 | statement,
|
|---|
| 1856 | source,
|
|---|
| 1857 | specifier.imported.name,
|
|---|
| 1858 | name
|
|---|
| 1859 | )
|
|---|
| 1860 | ) {
|
|---|
| 1861 | this.defineVariable(name);
|
|---|
| 1862 | }
|
|---|
| 1863 | break;
|
|---|
| 1864 | case "ImportNamespaceSpecifier":
|
|---|
| 1865 | if (!this.hooks.importSpecifier.call(statement, source, null, name)) {
|
|---|
| 1866 | this.defineVariable(name);
|
|---|
| 1867 | }
|
|---|
| 1868 | break;
|
|---|
| 1869 | default:
|
|---|
| 1870 | this.defineVariable(name);
|
|---|
| 1871 | }
|
|---|
| 1872 | }
|
|---|
| 1873 | }
|
|---|
| 1874 |
|
|---|
| 1875 | enterDeclaration(declaration, onIdent) {
|
|---|
| 1876 | switch (declaration.type) {
|
|---|
| 1877 | case "VariableDeclaration":
|
|---|
| 1878 | for (const declarator of declaration.declarations) {
|
|---|
| 1879 | switch (declarator.type) {
|
|---|
| 1880 | case "VariableDeclarator": {
|
|---|
| 1881 | this.enterPattern(declarator.id, onIdent);
|
|---|
| 1882 | break;
|
|---|
| 1883 | }
|
|---|
| 1884 | }
|
|---|
| 1885 | }
|
|---|
| 1886 | break;
|
|---|
| 1887 | case "FunctionDeclaration":
|
|---|
| 1888 | this.enterPattern(declaration.id, onIdent);
|
|---|
| 1889 | break;
|
|---|
| 1890 | case "ClassDeclaration":
|
|---|
| 1891 | this.enterPattern(declaration.id, onIdent);
|
|---|
| 1892 | break;
|
|---|
| 1893 | }
|
|---|
| 1894 | }
|
|---|
| 1895 |
|
|---|
| 1896 | blockPreWalkExportNamedDeclaration(statement) {
|
|---|
| 1897 | let source;
|
|---|
| 1898 | if (statement.source) {
|
|---|
| 1899 | source = statement.source.value;
|
|---|
| 1900 | this.hooks.exportImport.call(statement, source);
|
|---|
| 1901 | } else {
|
|---|
| 1902 | this.hooks.export.call(statement);
|
|---|
| 1903 | }
|
|---|
| 1904 | if (statement.declaration) {
|
|---|
| 1905 | if (
|
|---|
| 1906 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
|---|
| 1907 | ) {
|
|---|
| 1908 | const prev = this.prevStatement;
|
|---|
| 1909 | this.preWalkStatement(statement.declaration);
|
|---|
| 1910 | this.prevStatement = prev;
|
|---|
| 1911 | this.blockPreWalkStatement(statement.declaration);
|
|---|
| 1912 | let index = 0;
|
|---|
| 1913 | this.enterDeclaration(statement.declaration, def => {
|
|---|
| 1914 | this.hooks.exportSpecifier.call(statement, def, def, index++);
|
|---|
| 1915 | });
|
|---|
| 1916 | }
|
|---|
| 1917 | }
|
|---|
| 1918 | if (statement.specifiers) {
|
|---|
| 1919 | for (
|
|---|
| 1920 | let specifierIndex = 0;
|
|---|
| 1921 | specifierIndex < statement.specifiers.length;
|
|---|
| 1922 | specifierIndex++
|
|---|
| 1923 | ) {
|
|---|
| 1924 | const specifier = statement.specifiers[specifierIndex];
|
|---|
| 1925 | switch (specifier.type) {
|
|---|
| 1926 | case "ExportSpecifier": {
|
|---|
| 1927 | const name = specifier.exported.name;
|
|---|
| 1928 | if (source) {
|
|---|
| 1929 | this.hooks.exportImportSpecifier.call(
|
|---|
| 1930 | statement,
|
|---|
| 1931 | source,
|
|---|
| 1932 | specifier.local.name,
|
|---|
| 1933 | name,
|
|---|
| 1934 | specifierIndex
|
|---|
| 1935 | );
|
|---|
| 1936 | } else {
|
|---|
| 1937 | this.hooks.exportSpecifier.call(
|
|---|
| 1938 | statement,
|
|---|
| 1939 | specifier.local.name,
|
|---|
| 1940 | name,
|
|---|
| 1941 | specifierIndex
|
|---|
| 1942 | );
|
|---|
| 1943 | }
|
|---|
| 1944 | break;
|
|---|
| 1945 | }
|
|---|
| 1946 | }
|
|---|
| 1947 | }
|
|---|
| 1948 | }
|
|---|
| 1949 | }
|
|---|
| 1950 |
|
|---|
| 1951 | walkExportNamedDeclaration(statement) {
|
|---|
| 1952 | if (statement.declaration) {
|
|---|
| 1953 | this.walkStatement(statement.declaration);
|
|---|
| 1954 | }
|
|---|
| 1955 | }
|
|---|
| 1956 |
|
|---|
| 1957 | blockPreWalkExportDefaultDeclaration(statement) {
|
|---|
| 1958 | const prev = this.prevStatement;
|
|---|
| 1959 | this.preWalkStatement(statement.declaration);
|
|---|
| 1960 | this.prevStatement = prev;
|
|---|
| 1961 | this.blockPreWalkStatement(statement.declaration);
|
|---|
| 1962 | if (
|
|---|
| 1963 | statement.declaration.id &&
|
|---|
| 1964 | statement.declaration.type !== "FunctionExpression" &&
|
|---|
| 1965 | statement.declaration.type !== "ClassExpression"
|
|---|
| 1966 | ) {
|
|---|
| 1967 | this.hooks.exportSpecifier.call(
|
|---|
| 1968 | statement,
|
|---|
| 1969 | statement.declaration.id.name,
|
|---|
| 1970 | "default",
|
|---|
| 1971 | undefined
|
|---|
| 1972 | );
|
|---|
| 1973 | }
|
|---|
| 1974 | }
|
|---|
| 1975 |
|
|---|
| 1976 | walkExportDefaultDeclaration(statement) {
|
|---|
| 1977 | this.hooks.export.call(statement);
|
|---|
| 1978 | if (
|
|---|
| 1979 | statement.declaration.id &&
|
|---|
| 1980 | statement.declaration.type !== "FunctionExpression" &&
|
|---|
| 1981 | statement.declaration.type !== "ClassExpression"
|
|---|
| 1982 | ) {
|
|---|
| 1983 | if (
|
|---|
| 1984 | !this.hooks.exportDeclaration.call(statement, statement.declaration)
|
|---|
| 1985 | ) {
|
|---|
| 1986 | this.walkStatement(statement.declaration);
|
|---|
| 1987 | }
|
|---|
| 1988 | } else {
|
|---|
| 1989 | // Acorn parses `export default function() {}` as `FunctionDeclaration` and
|
|---|
| 1990 | // `export default class {}` as `ClassDeclaration`, both with `id = null`.
|
|---|
| 1991 | // These nodes must be treated as expressions.
|
|---|
| 1992 | if (
|
|---|
| 1993 | statement.declaration.type === "FunctionDeclaration" ||
|
|---|
| 1994 | statement.declaration.type === "ClassDeclaration"
|
|---|
| 1995 | ) {
|
|---|
| 1996 | this.walkStatement(statement.declaration);
|
|---|
| 1997 | } else {
|
|---|
| 1998 | this.walkExpression(statement.declaration);
|
|---|
| 1999 | }
|
|---|
| 2000 | if (!this.hooks.exportExpression.call(statement, statement.declaration)) {
|
|---|
| 2001 | this.hooks.exportSpecifier.call(
|
|---|
| 2002 | statement,
|
|---|
| 2003 | statement.declaration,
|
|---|
| 2004 | "default",
|
|---|
| 2005 | undefined
|
|---|
| 2006 | );
|
|---|
| 2007 | }
|
|---|
| 2008 | }
|
|---|
| 2009 | }
|
|---|
| 2010 |
|
|---|
| 2011 | blockPreWalkExportAllDeclaration(statement) {
|
|---|
| 2012 | const source = statement.source.value;
|
|---|
| 2013 | const name = statement.exported ? statement.exported.name : null;
|
|---|
| 2014 | this.hooks.exportImport.call(statement, source);
|
|---|
| 2015 | this.hooks.exportImportSpecifier.call(statement, source, null, name, 0);
|
|---|
| 2016 | }
|
|---|
| 2017 |
|
|---|
| 2018 | preWalkVariableDeclaration(statement) {
|
|---|
| 2019 | if (statement.kind !== "var") return;
|
|---|
| 2020 | this._preWalkVariableDeclaration(statement, this.hooks.varDeclarationVar);
|
|---|
| 2021 | }
|
|---|
| 2022 |
|
|---|
| 2023 | blockPreWalkVariableDeclaration(statement) {
|
|---|
| 2024 | if (statement.kind === "var") return;
|
|---|
| 2025 | const hookMap =
|
|---|
| 2026 | statement.kind === "const"
|
|---|
| 2027 | ? this.hooks.varDeclarationConst
|
|---|
| 2028 | : this.hooks.varDeclarationLet;
|
|---|
| 2029 | this._preWalkVariableDeclaration(statement, hookMap);
|
|---|
| 2030 | }
|
|---|
| 2031 |
|
|---|
| 2032 | _preWalkVariableDeclaration(statement, hookMap) {
|
|---|
| 2033 | for (const declarator of statement.declarations) {
|
|---|
| 2034 | switch (declarator.type) {
|
|---|
| 2035 | case "VariableDeclarator": {
|
|---|
| 2036 | if (!this.hooks.preDeclarator.call(declarator, statement)) {
|
|---|
| 2037 | this.enterPattern(declarator.id, (name, decl) => {
|
|---|
| 2038 | let hook = hookMap.get(name);
|
|---|
| 2039 | if (hook === undefined || !hook.call(decl)) {
|
|---|
| 2040 | hook = this.hooks.varDeclaration.get(name);
|
|---|
| 2041 | if (hook === undefined || !hook.call(decl)) {
|
|---|
| 2042 | this.defineVariable(name);
|
|---|
| 2043 | }
|
|---|
| 2044 | }
|
|---|
| 2045 | });
|
|---|
| 2046 | }
|
|---|
| 2047 | break;
|
|---|
| 2048 | }
|
|---|
| 2049 | }
|
|---|
| 2050 | }
|
|---|
| 2051 | }
|
|---|
| 2052 |
|
|---|
| 2053 | walkVariableDeclaration(statement) {
|
|---|
| 2054 | for (const declarator of statement.declarations) {
|
|---|
| 2055 | switch (declarator.type) {
|
|---|
| 2056 | case "VariableDeclarator": {
|
|---|
| 2057 | const renameIdentifier =
|
|---|
| 2058 | declarator.init && this.getRenameIdentifier(declarator.init);
|
|---|
| 2059 | if (renameIdentifier && declarator.id.type === "Identifier") {
|
|---|
| 2060 | const hook = this.hooks.canRename.get(renameIdentifier);
|
|---|
| 2061 | if (hook !== undefined && hook.call(declarator.init)) {
|
|---|
| 2062 | // renaming with "var a = b;"
|
|---|
| 2063 | const hook = this.hooks.rename.get(renameIdentifier);
|
|---|
| 2064 | if (hook === undefined || !hook.call(declarator.init)) {
|
|---|
| 2065 | this.setVariable(declarator.id.name, renameIdentifier);
|
|---|
| 2066 | }
|
|---|
| 2067 | break;
|
|---|
| 2068 | }
|
|---|
| 2069 | }
|
|---|
| 2070 | if (!this.hooks.declarator.call(declarator, statement)) {
|
|---|
| 2071 | this.walkPattern(declarator.id);
|
|---|
| 2072 | if (declarator.init) this.walkExpression(declarator.init);
|
|---|
| 2073 | }
|
|---|
| 2074 | break;
|
|---|
| 2075 | }
|
|---|
| 2076 | }
|
|---|
| 2077 | }
|
|---|
| 2078 | }
|
|---|
| 2079 |
|
|---|
| 2080 | blockPreWalkClassDeclaration(statement) {
|
|---|
| 2081 | if (statement.id) {
|
|---|
| 2082 | this.defineVariable(statement.id.name);
|
|---|
| 2083 | }
|
|---|
| 2084 | }
|
|---|
| 2085 |
|
|---|
| 2086 | walkClassDeclaration(statement) {
|
|---|
| 2087 | this.walkClass(statement);
|
|---|
| 2088 | }
|
|---|
| 2089 |
|
|---|
| 2090 | preWalkSwitchCases(switchCases) {
|
|---|
| 2091 | for (let index = 0, len = switchCases.length; index < len; index++) {
|
|---|
| 2092 | const switchCase = switchCases[index];
|
|---|
| 2093 | this.preWalkStatements(switchCase.consequent);
|
|---|
| 2094 | }
|
|---|
| 2095 | }
|
|---|
| 2096 |
|
|---|
| 2097 | walkSwitchCases(switchCases) {
|
|---|
| 2098 | this.inBlockScope(() => {
|
|---|
| 2099 | const len = switchCases.length;
|
|---|
| 2100 |
|
|---|
| 2101 | // we need to pre walk all statements first since we can have invalid code
|
|---|
| 2102 | // import A from "module";
|
|---|
| 2103 | // switch(1) {
|
|---|
| 2104 | // case 1:
|
|---|
| 2105 | // console.log(A); // should fail at runtime
|
|---|
| 2106 | // case 2:
|
|---|
| 2107 | // const A = 1;
|
|---|
| 2108 | // }
|
|---|
| 2109 | for (let index = 0; index < len; index++) {
|
|---|
| 2110 | const switchCase = switchCases[index];
|
|---|
| 2111 |
|
|---|
| 2112 | if (switchCase.consequent.length > 0) {
|
|---|
| 2113 | const prev = this.prevStatement;
|
|---|
| 2114 | this.blockPreWalkStatements(switchCase.consequent);
|
|---|
| 2115 | this.prevStatement = prev;
|
|---|
| 2116 | }
|
|---|
| 2117 | }
|
|---|
| 2118 |
|
|---|
| 2119 | for (let index = 0; index < len; index++) {
|
|---|
| 2120 | const switchCase = switchCases[index];
|
|---|
| 2121 |
|
|---|
| 2122 | if (switchCase.test) {
|
|---|
| 2123 | this.walkExpression(switchCase.test);
|
|---|
| 2124 | }
|
|---|
| 2125 | if (switchCase.consequent.length > 0) {
|
|---|
| 2126 | this.walkStatements(switchCase.consequent);
|
|---|
| 2127 | }
|
|---|
| 2128 | }
|
|---|
| 2129 | });
|
|---|
| 2130 | }
|
|---|
| 2131 |
|
|---|
| 2132 | preWalkCatchClause(catchClause) {
|
|---|
| 2133 | this.preWalkStatement(catchClause.body);
|
|---|
| 2134 | }
|
|---|
| 2135 |
|
|---|
| 2136 | walkCatchClause(catchClause) {
|
|---|
| 2137 | this.inBlockScope(() => {
|
|---|
| 2138 | // Error binding is optional in catch clause since ECMAScript 2019
|
|---|
| 2139 | if (catchClause.param !== null) {
|
|---|
| 2140 | this.enterPattern(catchClause.param, ident => {
|
|---|
| 2141 | this.defineVariable(ident);
|
|---|
| 2142 | });
|
|---|
| 2143 | this.walkPattern(catchClause.param);
|
|---|
| 2144 | }
|
|---|
| 2145 | const prev = this.prevStatement;
|
|---|
| 2146 | this.blockPreWalkStatement(catchClause.body);
|
|---|
| 2147 | this.prevStatement = prev;
|
|---|
| 2148 | this.walkStatement(catchClause.body);
|
|---|
| 2149 | });
|
|---|
| 2150 | }
|
|---|
| 2151 |
|
|---|
| 2152 | walkPattern(pattern) {
|
|---|
| 2153 | switch (pattern.type) {
|
|---|
| 2154 | case "ArrayPattern":
|
|---|
| 2155 | this.walkArrayPattern(pattern);
|
|---|
| 2156 | break;
|
|---|
| 2157 | case "AssignmentPattern":
|
|---|
| 2158 | this.walkAssignmentPattern(pattern);
|
|---|
| 2159 | break;
|
|---|
| 2160 | case "MemberExpression":
|
|---|
| 2161 | this.walkMemberExpression(pattern);
|
|---|
| 2162 | break;
|
|---|
| 2163 | case "ObjectPattern":
|
|---|
| 2164 | this.walkObjectPattern(pattern);
|
|---|
| 2165 | break;
|
|---|
| 2166 | case "RestElement":
|
|---|
| 2167 | this.walkRestElement(pattern);
|
|---|
| 2168 | break;
|
|---|
| 2169 | }
|
|---|
| 2170 | }
|
|---|
| 2171 |
|
|---|
| 2172 | walkAssignmentPattern(pattern) {
|
|---|
| 2173 | this.walkExpression(pattern.right);
|
|---|
| 2174 | this.walkPattern(pattern.left);
|
|---|
| 2175 | }
|
|---|
| 2176 |
|
|---|
| 2177 | walkObjectPattern(pattern) {
|
|---|
| 2178 | for (let i = 0, len = pattern.properties.length; i < len; i++) {
|
|---|
| 2179 | const prop = pattern.properties[i];
|
|---|
| 2180 | if (prop) {
|
|---|
| 2181 | if (prop.computed) this.walkExpression(prop.key);
|
|---|
| 2182 | if (prop.value) this.walkPattern(prop.value);
|
|---|
| 2183 | }
|
|---|
| 2184 | }
|
|---|
| 2185 | }
|
|---|
| 2186 |
|
|---|
| 2187 | walkArrayPattern(pattern) {
|
|---|
| 2188 | for (let i = 0, len = pattern.elements.length; i < len; i++) {
|
|---|
| 2189 | const element = pattern.elements[i];
|
|---|
| 2190 | if (element) this.walkPattern(element);
|
|---|
| 2191 | }
|
|---|
| 2192 | }
|
|---|
| 2193 |
|
|---|
| 2194 | walkRestElement(pattern) {
|
|---|
| 2195 | this.walkPattern(pattern.argument);
|
|---|
| 2196 | }
|
|---|
| 2197 |
|
|---|
| 2198 | walkExpressions(expressions) {
|
|---|
| 2199 | for (const expression of expressions) {
|
|---|
| 2200 | if (expression) {
|
|---|
| 2201 | this.walkExpression(expression);
|
|---|
| 2202 | }
|
|---|
| 2203 | }
|
|---|
| 2204 | }
|
|---|
| 2205 |
|
|---|
| 2206 | walkExpression(expression) {
|
|---|
| 2207 | switch (expression.type) {
|
|---|
| 2208 | case "ArrayExpression":
|
|---|
| 2209 | this.walkArrayExpression(expression);
|
|---|
| 2210 | break;
|
|---|
| 2211 | case "ArrowFunctionExpression":
|
|---|
| 2212 | this.walkArrowFunctionExpression(expression);
|
|---|
| 2213 | break;
|
|---|
| 2214 | case "AssignmentExpression":
|
|---|
| 2215 | this.walkAssignmentExpression(expression);
|
|---|
| 2216 | break;
|
|---|
| 2217 | case "AwaitExpression":
|
|---|
| 2218 | this.walkAwaitExpression(expression);
|
|---|
| 2219 | break;
|
|---|
| 2220 | case "BinaryExpression":
|
|---|
| 2221 | this.walkBinaryExpression(expression);
|
|---|
| 2222 | break;
|
|---|
| 2223 | case "CallExpression":
|
|---|
| 2224 | this.walkCallExpression(expression);
|
|---|
| 2225 | break;
|
|---|
| 2226 | case "ChainExpression":
|
|---|
| 2227 | this.walkChainExpression(expression);
|
|---|
| 2228 | break;
|
|---|
| 2229 | case "ClassExpression":
|
|---|
| 2230 | this.walkClassExpression(expression);
|
|---|
| 2231 | break;
|
|---|
| 2232 | case "ConditionalExpression":
|
|---|
| 2233 | this.walkConditionalExpression(expression);
|
|---|
| 2234 | break;
|
|---|
| 2235 | case "FunctionExpression":
|
|---|
| 2236 | this.walkFunctionExpression(expression);
|
|---|
| 2237 | break;
|
|---|
| 2238 | case "Identifier":
|
|---|
| 2239 | this.walkIdentifier(expression);
|
|---|
| 2240 | break;
|
|---|
| 2241 | case "ImportExpression":
|
|---|
| 2242 | this.walkImportExpression(expression);
|
|---|
| 2243 | break;
|
|---|
| 2244 | case "LogicalExpression":
|
|---|
| 2245 | this.walkLogicalExpression(expression);
|
|---|
| 2246 | break;
|
|---|
| 2247 | case "MetaProperty":
|
|---|
| 2248 | this.walkMetaProperty(expression);
|
|---|
| 2249 | break;
|
|---|
| 2250 | case "MemberExpression":
|
|---|
| 2251 | this.walkMemberExpression(expression);
|
|---|
| 2252 | break;
|
|---|
| 2253 | case "NewExpression":
|
|---|
| 2254 | this.walkNewExpression(expression);
|
|---|
| 2255 | break;
|
|---|
| 2256 | case "ObjectExpression":
|
|---|
| 2257 | this.walkObjectExpression(expression);
|
|---|
| 2258 | break;
|
|---|
| 2259 | case "SequenceExpression":
|
|---|
| 2260 | this.walkSequenceExpression(expression);
|
|---|
| 2261 | break;
|
|---|
| 2262 | case "SpreadElement":
|
|---|
| 2263 | this.walkSpreadElement(expression);
|
|---|
| 2264 | break;
|
|---|
| 2265 | case "TaggedTemplateExpression":
|
|---|
| 2266 | this.walkTaggedTemplateExpression(expression);
|
|---|
| 2267 | break;
|
|---|
| 2268 | case "TemplateLiteral":
|
|---|
| 2269 | this.walkTemplateLiteral(expression);
|
|---|
| 2270 | break;
|
|---|
| 2271 | case "ThisExpression":
|
|---|
| 2272 | this.walkThisExpression(expression);
|
|---|
| 2273 | break;
|
|---|
| 2274 | case "UnaryExpression":
|
|---|
| 2275 | this.walkUnaryExpression(expression);
|
|---|
| 2276 | break;
|
|---|
| 2277 | case "UpdateExpression":
|
|---|
| 2278 | this.walkUpdateExpression(expression);
|
|---|
| 2279 | break;
|
|---|
| 2280 | case "YieldExpression":
|
|---|
| 2281 | this.walkYieldExpression(expression);
|
|---|
| 2282 | break;
|
|---|
| 2283 | }
|
|---|
| 2284 | }
|
|---|
| 2285 |
|
|---|
| 2286 | walkAwaitExpression(expression) {
|
|---|
| 2287 | if (this.scope.topLevelScope === true)
|
|---|
| 2288 | this.hooks.topLevelAwait.call(expression);
|
|---|
| 2289 | this.walkExpression(expression.argument);
|
|---|
| 2290 | }
|
|---|
| 2291 |
|
|---|
| 2292 | walkArrayExpression(expression) {
|
|---|
| 2293 | if (expression.elements) {
|
|---|
| 2294 | this.walkExpressions(expression.elements);
|
|---|
| 2295 | }
|
|---|
| 2296 | }
|
|---|
| 2297 |
|
|---|
| 2298 | walkSpreadElement(expression) {
|
|---|
| 2299 | if (expression.argument) {
|
|---|
| 2300 | this.walkExpression(expression.argument);
|
|---|
| 2301 | }
|
|---|
| 2302 | }
|
|---|
| 2303 |
|
|---|
| 2304 | walkObjectExpression(expression) {
|
|---|
| 2305 | for (
|
|---|
| 2306 | let propIndex = 0, len = expression.properties.length;
|
|---|
| 2307 | propIndex < len;
|
|---|
| 2308 | propIndex++
|
|---|
| 2309 | ) {
|
|---|
| 2310 | const prop = expression.properties[propIndex];
|
|---|
| 2311 | this.walkProperty(prop);
|
|---|
| 2312 | }
|
|---|
| 2313 | }
|
|---|
| 2314 |
|
|---|
| 2315 | walkProperty(prop) {
|
|---|
| 2316 | if (prop.type === "SpreadElement") {
|
|---|
| 2317 | this.walkExpression(prop.argument);
|
|---|
| 2318 | return;
|
|---|
| 2319 | }
|
|---|
| 2320 | if (prop.computed) {
|
|---|
| 2321 | this.walkExpression(prop.key);
|
|---|
| 2322 | }
|
|---|
| 2323 | if (prop.shorthand && prop.value && prop.value.type === "Identifier") {
|
|---|
| 2324 | this.scope.inShorthand = prop.value.name;
|
|---|
| 2325 | this.walkIdentifier(prop.value);
|
|---|
| 2326 | this.scope.inShorthand = false;
|
|---|
| 2327 | } else {
|
|---|
| 2328 | this.walkExpression(prop.value);
|
|---|
| 2329 | }
|
|---|
| 2330 | }
|
|---|
| 2331 |
|
|---|
| 2332 | walkFunctionExpression(expression) {
|
|---|
| 2333 | const wasTopLevel = this.scope.topLevelScope;
|
|---|
| 2334 | this.scope.topLevelScope = false;
|
|---|
| 2335 | const scopeParams = expression.params;
|
|---|
| 2336 |
|
|---|
| 2337 | // Add function name in scope for recursive calls
|
|---|
| 2338 | if (expression.id) {
|
|---|
| 2339 | scopeParams.push(expression.id.name);
|
|---|
| 2340 | }
|
|---|
| 2341 |
|
|---|
| 2342 | this.inFunctionScope(true, scopeParams, () => {
|
|---|
| 2343 | for (const param of expression.params) {
|
|---|
| 2344 | this.walkPattern(param);
|
|---|
| 2345 | }
|
|---|
| 2346 | if (expression.body.type === "BlockStatement") {
|
|---|
| 2347 | this.detectMode(expression.body.body);
|
|---|
| 2348 | const prev = this.prevStatement;
|
|---|
| 2349 | this.preWalkStatement(expression.body);
|
|---|
| 2350 | this.prevStatement = prev;
|
|---|
| 2351 | this.walkStatement(expression.body);
|
|---|
| 2352 | } else {
|
|---|
| 2353 | this.walkExpression(expression.body);
|
|---|
| 2354 | }
|
|---|
| 2355 | });
|
|---|
| 2356 | this.scope.topLevelScope = wasTopLevel;
|
|---|
| 2357 | }
|
|---|
| 2358 |
|
|---|
| 2359 | walkArrowFunctionExpression(expression) {
|
|---|
| 2360 | const wasTopLevel = this.scope.topLevelScope;
|
|---|
| 2361 | this.scope.topLevelScope = wasTopLevel ? "arrow" : false;
|
|---|
| 2362 | this.inFunctionScope(false, expression.params, () => {
|
|---|
| 2363 | for (const param of expression.params) {
|
|---|
| 2364 | this.walkPattern(param);
|
|---|
| 2365 | }
|
|---|
| 2366 | if (expression.body.type === "BlockStatement") {
|
|---|
| 2367 | this.detectMode(expression.body.body);
|
|---|
| 2368 | const prev = this.prevStatement;
|
|---|
| 2369 | this.preWalkStatement(expression.body);
|
|---|
| 2370 | this.prevStatement = prev;
|
|---|
| 2371 | this.walkStatement(expression.body);
|
|---|
| 2372 | } else {
|
|---|
| 2373 | this.walkExpression(expression.body);
|
|---|
| 2374 | }
|
|---|
| 2375 | });
|
|---|
| 2376 | this.scope.topLevelScope = wasTopLevel;
|
|---|
| 2377 | }
|
|---|
| 2378 |
|
|---|
| 2379 | /**
|
|---|
| 2380 | * @param {SequenceExpressionNode} expression the sequence
|
|---|
| 2381 | */
|
|---|
| 2382 | walkSequenceExpression(expression) {
|
|---|
| 2383 | if (!expression.expressions) return;
|
|---|
| 2384 | // We treat sequence expressions like statements when they are one statement level
|
|---|
| 2385 | // This has some benefits for optimizations that only work on statement level
|
|---|
| 2386 | const currentStatement = this.statementPath[this.statementPath.length - 1];
|
|---|
| 2387 | if (
|
|---|
| 2388 | currentStatement === expression ||
|
|---|
| 2389 | (currentStatement.type === "ExpressionStatement" &&
|
|---|
| 2390 | currentStatement.expression === expression)
|
|---|
| 2391 | ) {
|
|---|
| 2392 | const old = this.statementPath.pop();
|
|---|
| 2393 | for (const expr of expression.expressions) {
|
|---|
| 2394 | this.statementPath.push(expr);
|
|---|
| 2395 | this.walkExpression(expr);
|
|---|
| 2396 | this.statementPath.pop();
|
|---|
| 2397 | }
|
|---|
| 2398 | this.statementPath.push(old);
|
|---|
| 2399 | } else {
|
|---|
| 2400 | this.walkExpressions(expression.expressions);
|
|---|
| 2401 | }
|
|---|
| 2402 | }
|
|---|
| 2403 |
|
|---|
| 2404 | walkUpdateExpression(expression) {
|
|---|
| 2405 | this.walkExpression(expression.argument);
|
|---|
| 2406 | }
|
|---|
| 2407 |
|
|---|
| 2408 | walkUnaryExpression(expression) {
|
|---|
| 2409 | if (expression.operator === "typeof") {
|
|---|
| 2410 | const result = this.callHooksForExpression(
|
|---|
| 2411 | this.hooks.typeof,
|
|---|
| 2412 | expression.argument,
|
|---|
| 2413 | expression
|
|---|
| 2414 | );
|
|---|
| 2415 | if (result === true) return;
|
|---|
| 2416 | if (expression.argument.type === "ChainExpression") {
|
|---|
| 2417 | const result = this.callHooksForExpression(
|
|---|
| 2418 | this.hooks.typeof,
|
|---|
| 2419 | expression.argument.expression,
|
|---|
| 2420 | expression
|
|---|
| 2421 | );
|
|---|
| 2422 | if (result === true) return;
|
|---|
| 2423 | }
|
|---|
| 2424 | }
|
|---|
| 2425 | this.walkExpression(expression.argument);
|
|---|
| 2426 | }
|
|---|
| 2427 |
|
|---|
| 2428 | walkLeftRightExpression(expression) {
|
|---|
| 2429 | this.walkExpression(expression.left);
|
|---|
| 2430 | this.walkExpression(expression.right);
|
|---|
| 2431 | }
|
|---|
| 2432 |
|
|---|
| 2433 | walkBinaryExpression(expression) {
|
|---|
| 2434 | this.walkLeftRightExpression(expression);
|
|---|
| 2435 | }
|
|---|
| 2436 |
|
|---|
| 2437 | walkLogicalExpression(expression) {
|
|---|
| 2438 | const result = this.hooks.expressionLogicalOperator.call(expression);
|
|---|
| 2439 | if (result === undefined) {
|
|---|
| 2440 | this.walkLeftRightExpression(expression);
|
|---|
| 2441 | } else {
|
|---|
| 2442 | if (result) {
|
|---|
| 2443 | this.walkExpression(expression.right);
|
|---|
| 2444 | }
|
|---|
| 2445 | }
|
|---|
| 2446 | }
|
|---|
| 2447 |
|
|---|
| 2448 | walkAssignmentExpression(expression) {
|
|---|
| 2449 | if (expression.left.type === "Identifier") {
|
|---|
| 2450 | const renameIdentifier = this.getRenameIdentifier(expression.right);
|
|---|
| 2451 | if (renameIdentifier) {
|
|---|
| 2452 | if (
|
|---|
| 2453 | this.callHooksForInfo(
|
|---|
| 2454 | this.hooks.canRename,
|
|---|
| 2455 | renameIdentifier,
|
|---|
| 2456 | expression.right
|
|---|
| 2457 | )
|
|---|
| 2458 | ) {
|
|---|
| 2459 | // renaming "a = b;"
|
|---|
| 2460 | if (
|
|---|
| 2461 | !this.callHooksForInfo(
|
|---|
| 2462 | this.hooks.rename,
|
|---|
| 2463 | renameIdentifier,
|
|---|
| 2464 | expression.right
|
|---|
| 2465 | )
|
|---|
| 2466 | ) {
|
|---|
| 2467 | this.setVariable(
|
|---|
| 2468 | expression.left.name,
|
|---|
| 2469 | this.getVariableInfo(renameIdentifier)
|
|---|
| 2470 | );
|
|---|
| 2471 | }
|
|---|
| 2472 | return;
|
|---|
| 2473 | }
|
|---|
| 2474 | }
|
|---|
| 2475 | this.walkExpression(expression.right);
|
|---|
| 2476 | this.enterPattern(expression.left, (name, decl) => {
|
|---|
| 2477 | if (!this.callHooksForName(this.hooks.assign, name, expression)) {
|
|---|
| 2478 | this.walkExpression(expression.left);
|
|---|
| 2479 | }
|
|---|
| 2480 | });
|
|---|
| 2481 | return;
|
|---|
| 2482 | }
|
|---|
| 2483 | if (expression.left.type.endsWith("Pattern")) {
|
|---|
| 2484 | this.walkExpression(expression.right);
|
|---|
| 2485 | this.enterPattern(expression.left, (name, decl) => {
|
|---|
| 2486 | if (!this.callHooksForName(this.hooks.assign, name, expression)) {
|
|---|
| 2487 | this.defineVariable(name);
|
|---|
| 2488 | }
|
|---|
| 2489 | });
|
|---|
| 2490 | this.walkPattern(expression.left);
|
|---|
| 2491 | } else if (expression.left.type === "MemberExpression") {
|
|---|
| 2492 | const exprName = this.getMemberExpressionInfo(
|
|---|
| 2493 | expression.left,
|
|---|
| 2494 | ALLOWED_MEMBER_TYPES_EXPRESSION
|
|---|
| 2495 | );
|
|---|
| 2496 | if (exprName) {
|
|---|
| 2497 | if (
|
|---|
| 2498 | this.callHooksForInfo(
|
|---|
| 2499 | this.hooks.assignMemberChain,
|
|---|
| 2500 | exprName.rootInfo,
|
|---|
| 2501 | expression,
|
|---|
| 2502 | exprName.getMembers()
|
|---|
| 2503 | )
|
|---|
| 2504 | ) {
|
|---|
| 2505 | return;
|
|---|
| 2506 | }
|
|---|
| 2507 | }
|
|---|
| 2508 | this.walkExpression(expression.right);
|
|---|
| 2509 | this.walkExpression(expression.left);
|
|---|
| 2510 | } else {
|
|---|
| 2511 | this.walkExpression(expression.right);
|
|---|
| 2512 | this.walkExpression(expression.left);
|
|---|
| 2513 | }
|
|---|
| 2514 | }
|
|---|
| 2515 |
|
|---|
| 2516 | walkConditionalExpression(expression) {
|
|---|
| 2517 | const result = this.hooks.expressionConditionalOperator.call(expression);
|
|---|
| 2518 | if (result === undefined) {
|
|---|
| 2519 | this.walkExpression(expression.test);
|
|---|
| 2520 | this.walkExpression(expression.consequent);
|
|---|
| 2521 | if (expression.alternate) {
|
|---|
| 2522 | this.walkExpression(expression.alternate);
|
|---|
| 2523 | }
|
|---|
| 2524 | } else {
|
|---|
| 2525 | if (result) {
|
|---|
| 2526 | this.walkExpression(expression.consequent);
|
|---|
| 2527 | } else if (expression.alternate) {
|
|---|
| 2528 | this.walkExpression(expression.alternate);
|
|---|
| 2529 | }
|
|---|
| 2530 | }
|
|---|
| 2531 | }
|
|---|
| 2532 |
|
|---|
| 2533 | walkNewExpression(expression) {
|
|---|
| 2534 | const result = this.callHooksForExpression(
|
|---|
| 2535 | this.hooks.new,
|
|---|
| 2536 | expression.callee,
|
|---|
| 2537 | expression
|
|---|
| 2538 | );
|
|---|
| 2539 | if (result === true) return;
|
|---|
| 2540 | this.walkExpression(expression.callee);
|
|---|
| 2541 | if (expression.arguments) {
|
|---|
| 2542 | this.walkExpressions(expression.arguments);
|
|---|
| 2543 | }
|
|---|
| 2544 | }
|
|---|
| 2545 |
|
|---|
| 2546 | walkYieldExpression(expression) {
|
|---|
| 2547 | if (expression.argument) {
|
|---|
| 2548 | this.walkExpression(expression.argument);
|
|---|
| 2549 | }
|
|---|
| 2550 | }
|
|---|
| 2551 |
|
|---|
| 2552 | walkTemplateLiteral(expression) {
|
|---|
| 2553 | if (expression.expressions) {
|
|---|
| 2554 | this.walkExpressions(expression.expressions);
|
|---|
| 2555 | }
|
|---|
| 2556 | }
|
|---|
| 2557 |
|
|---|
| 2558 | walkTaggedTemplateExpression(expression) {
|
|---|
| 2559 | if (expression.tag) {
|
|---|
| 2560 | this.walkExpression(expression.tag);
|
|---|
| 2561 | }
|
|---|
| 2562 | if (expression.quasi && expression.quasi.expressions) {
|
|---|
| 2563 | this.walkExpressions(expression.quasi.expressions);
|
|---|
| 2564 | }
|
|---|
| 2565 | }
|
|---|
| 2566 |
|
|---|
| 2567 | walkClassExpression(expression) {
|
|---|
| 2568 | this.walkClass(expression);
|
|---|
| 2569 | }
|
|---|
| 2570 |
|
|---|
| 2571 | /**
|
|---|
| 2572 | * @param {ChainExpressionNode} expression expression
|
|---|
| 2573 | */
|
|---|
| 2574 | walkChainExpression(expression) {
|
|---|
| 2575 | const result = this.hooks.optionalChaining.call(expression);
|
|---|
| 2576 |
|
|---|
| 2577 | if (result === undefined) {
|
|---|
| 2578 | if (expression.expression.type === "CallExpression") {
|
|---|
| 2579 | this.walkCallExpression(expression.expression);
|
|---|
| 2580 | } else {
|
|---|
| 2581 | this.walkMemberExpression(expression.expression);
|
|---|
| 2582 | }
|
|---|
| 2583 | }
|
|---|
| 2584 | }
|
|---|
| 2585 |
|
|---|
| 2586 | _walkIIFE(functionExpression, options, currentThis) {
|
|---|
| 2587 | const getVarInfo = argOrThis => {
|
|---|
| 2588 | const renameIdentifier = this.getRenameIdentifier(argOrThis);
|
|---|
| 2589 | if (renameIdentifier) {
|
|---|
| 2590 | if (
|
|---|
| 2591 | this.callHooksForInfo(
|
|---|
| 2592 | this.hooks.canRename,
|
|---|
| 2593 | renameIdentifier,
|
|---|
| 2594 | argOrThis
|
|---|
| 2595 | )
|
|---|
| 2596 | ) {
|
|---|
| 2597 | if (
|
|---|
| 2598 | !this.callHooksForInfo(
|
|---|
| 2599 | this.hooks.rename,
|
|---|
| 2600 | renameIdentifier,
|
|---|
| 2601 | argOrThis
|
|---|
| 2602 | )
|
|---|
| 2603 | ) {
|
|---|
| 2604 | return this.getVariableInfo(renameIdentifier);
|
|---|
| 2605 | }
|
|---|
| 2606 | }
|
|---|
| 2607 | }
|
|---|
| 2608 | this.walkExpression(argOrThis);
|
|---|
| 2609 | };
|
|---|
| 2610 | const { params, type } = functionExpression;
|
|---|
| 2611 | const arrow = type === "ArrowFunctionExpression";
|
|---|
| 2612 | const renameThis = currentThis ? getVarInfo(currentThis) : null;
|
|---|
| 2613 | const varInfoForArgs = options.map(getVarInfo);
|
|---|
| 2614 | const wasTopLevel = this.scope.topLevelScope;
|
|---|
| 2615 | this.scope.topLevelScope = wasTopLevel && arrow ? "arrow" : false;
|
|---|
| 2616 | const scopeParams = params.filter(
|
|---|
| 2617 | (identifier, idx) => !varInfoForArgs[idx]
|
|---|
| 2618 | );
|
|---|
| 2619 |
|
|---|
| 2620 | // Add function name in scope for recursive calls
|
|---|
| 2621 | if (functionExpression.id) {
|
|---|
| 2622 | scopeParams.push(functionExpression.id.name);
|
|---|
| 2623 | }
|
|---|
| 2624 |
|
|---|
| 2625 | this.inFunctionScope(true, scopeParams, () => {
|
|---|
| 2626 | if (renameThis && !arrow) {
|
|---|
| 2627 | this.setVariable("this", renameThis);
|
|---|
| 2628 | }
|
|---|
| 2629 | for (let i = 0; i < varInfoForArgs.length; i++) {
|
|---|
| 2630 | const varInfo = varInfoForArgs[i];
|
|---|
| 2631 | if (!varInfo) continue;
|
|---|
| 2632 | if (!params[i] || params[i].type !== "Identifier") continue;
|
|---|
| 2633 | this.setVariable(params[i].name, varInfo);
|
|---|
| 2634 | }
|
|---|
| 2635 | if (functionExpression.body.type === "BlockStatement") {
|
|---|
| 2636 | this.detectMode(functionExpression.body.body);
|
|---|
| 2637 | const prev = this.prevStatement;
|
|---|
| 2638 | this.preWalkStatement(functionExpression.body);
|
|---|
| 2639 | this.prevStatement = prev;
|
|---|
| 2640 | this.walkStatement(functionExpression.body);
|
|---|
| 2641 | } else {
|
|---|
| 2642 | this.walkExpression(functionExpression.body);
|
|---|
| 2643 | }
|
|---|
| 2644 | });
|
|---|
| 2645 | this.scope.topLevelScope = wasTopLevel;
|
|---|
| 2646 | }
|
|---|
| 2647 |
|
|---|
| 2648 | walkImportExpression(expression) {
|
|---|
| 2649 | let result = this.hooks.importCall.call(expression);
|
|---|
| 2650 | if (result === true) return;
|
|---|
| 2651 |
|
|---|
| 2652 | this.walkExpression(expression.source);
|
|---|
| 2653 | }
|
|---|
| 2654 |
|
|---|
| 2655 | walkCallExpression(expression) {
|
|---|
| 2656 | const isSimpleFunction = fn => {
|
|---|
| 2657 | return fn.params.every(p => p.type === "Identifier");
|
|---|
| 2658 | };
|
|---|
| 2659 | if (
|
|---|
| 2660 | expression.callee.type === "MemberExpression" &&
|
|---|
| 2661 | expression.callee.object.type.endsWith("FunctionExpression") &&
|
|---|
| 2662 | !expression.callee.computed &&
|
|---|
| 2663 | (expression.callee.property.name === "call" ||
|
|---|
| 2664 | expression.callee.property.name === "bind") &&
|
|---|
| 2665 | expression.arguments.length > 0 &&
|
|---|
| 2666 | isSimpleFunction(expression.callee.object)
|
|---|
| 2667 | ) {
|
|---|
| 2668 | // (function(…) { }.call/bind(?, …))
|
|---|
| 2669 | this._walkIIFE(
|
|---|
| 2670 | expression.callee.object,
|
|---|
| 2671 | expression.arguments.slice(1),
|
|---|
| 2672 | expression.arguments[0]
|
|---|
| 2673 | );
|
|---|
| 2674 | } else if (
|
|---|
| 2675 | expression.callee.type.endsWith("FunctionExpression") &&
|
|---|
| 2676 | isSimpleFunction(expression.callee)
|
|---|
| 2677 | ) {
|
|---|
| 2678 | // (function(…) { }(…))
|
|---|
| 2679 | this._walkIIFE(expression.callee, expression.arguments, null);
|
|---|
| 2680 | } else {
|
|---|
| 2681 | if (expression.callee.type === "MemberExpression") {
|
|---|
| 2682 | const exprInfo = this.getMemberExpressionInfo(
|
|---|
| 2683 | expression.callee,
|
|---|
| 2684 | ALLOWED_MEMBER_TYPES_CALL_EXPRESSION
|
|---|
| 2685 | );
|
|---|
| 2686 | if (exprInfo && exprInfo.type === "call") {
|
|---|
| 2687 | const result = this.callHooksForInfo(
|
|---|
| 2688 | this.hooks.callMemberChainOfCallMemberChain,
|
|---|
| 2689 | exprInfo.rootInfo,
|
|---|
| 2690 | expression,
|
|---|
| 2691 | exprInfo.getCalleeMembers(),
|
|---|
| 2692 | exprInfo.call,
|
|---|
| 2693 | exprInfo.getMembers()
|
|---|
| 2694 | );
|
|---|
| 2695 | if (result === true) return;
|
|---|
| 2696 | }
|
|---|
| 2697 | }
|
|---|
| 2698 | const callee = this.evaluateExpression(expression.callee);
|
|---|
| 2699 | if (callee.isIdentifier()) {
|
|---|
| 2700 | const result1 = this.callHooksForInfo(
|
|---|
| 2701 | this.hooks.callMemberChain,
|
|---|
| 2702 | callee.rootInfo,
|
|---|
| 2703 | expression,
|
|---|
| 2704 | callee.getMembers()
|
|---|
| 2705 | );
|
|---|
| 2706 | if (result1 === true) return;
|
|---|
| 2707 | const result2 = this.callHooksForInfo(
|
|---|
| 2708 | this.hooks.call,
|
|---|
| 2709 | callee.identifier,
|
|---|
| 2710 | expression
|
|---|
| 2711 | );
|
|---|
| 2712 | if (result2 === true) return;
|
|---|
| 2713 | }
|
|---|
| 2714 |
|
|---|
| 2715 | if (expression.callee) {
|
|---|
| 2716 | if (expression.callee.type === "MemberExpression") {
|
|---|
| 2717 | // because of call context we need to walk the call context as expression
|
|---|
| 2718 | this.walkExpression(expression.callee.object);
|
|---|
| 2719 | if (expression.callee.computed === true)
|
|---|
| 2720 | this.walkExpression(expression.callee.property);
|
|---|
| 2721 | } else {
|
|---|
| 2722 | this.walkExpression(expression.callee);
|
|---|
| 2723 | }
|
|---|
| 2724 | }
|
|---|
| 2725 | if (expression.arguments) this.walkExpressions(expression.arguments);
|
|---|
| 2726 | }
|
|---|
| 2727 | }
|
|---|
| 2728 |
|
|---|
| 2729 | walkMemberExpression(expression) {
|
|---|
| 2730 | const exprInfo = this.getMemberExpressionInfo(
|
|---|
| 2731 | expression,
|
|---|
| 2732 | ALLOWED_MEMBER_TYPES_ALL
|
|---|
| 2733 | );
|
|---|
| 2734 | if (exprInfo) {
|
|---|
| 2735 | switch (exprInfo.type) {
|
|---|
| 2736 | case "expression": {
|
|---|
| 2737 | const result1 = this.callHooksForInfo(
|
|---|
| 2738 | this.hooks.expression,
|
|---|
| 2739 | exprInfo.name,
|
|---|
| 2740 | expression
|
|---|
| 2741 | );
|
|---|
| 2742 | if (result1 === true) return;
|
|---|
| 2743 | const members = exprInfo.getMembers();
|
|---|
| 2744 | const result2 = this.callHooksForInfo(
|
|---|
| 2745 | this.hooks.expressionMemberChain,
|
|---|
| 2746 | exprInfo.rootInfo,
|
|---|
| 2747 | expression,
|
|---|
| 2748 | members
|
|---|
| 2749 | );
|
|---|
| 2750 | if (result2 === true) return;
|
|---|
| 2751 | this.walkMemberExpressionWithExpressionName(
|
|---|
| 2752 | expression,
|
|---|
| 2753 | exprInfo.name,
|
|---|
| 2754 | exprInfo.rootInfo,
|
|---|
| 2755 | members.slice(),
|
|---|
| 2756 | () =>
|
|---|
| 2757 | this.callHooksForInfo(
|
|---|
| 2758 | this.hooks.unhandledExpressionMemberChain,
|
|---|
| 2759 | exprInfo.rootInfo,
|
|---|
| 2760 | expression,
|
|---|
| 2761 | members
|
|---|
| 2762 | )
|
|---|
| 2763 | );
|
|---|
| 2764 | return;
|
|---|
| 2765 | }
|
|---|
| 2766 | case "call": {
|
|---|
| 2767 | const result = this.callHooksForInfo(
|
|---|
| 2768 | this.hooks.memberChainOfCallMemberChain,
|
|---|
| 2769 | exprInfo.rootInfo,
|
|---|
| 2770 | expression,
|
|---|
| 2771 | exprInfo.getCalleeMembers(),
|
|---|
| 2772 | exprInfo.call,
|
|---|
| 2773 | exprInfo.getMembers()
|
|---|
| 2774 | );
|
|---|
| 2775 | if (result === true) return;
|
|---|
| 2776 | // Fast skip over the member chain as we already called memberChainOfCallMemberChain
|
|---|
| 2777 | // and call computed property are literals anyway
|
|---|
| 2778 | this.walkExpression(exprInfo.call);
|
|---|
| 2779 | return;
|
|---|
| 2780 | }
|
|---|
| 2781 | }
|
|---|
| 2782 | }
|
|---|
| 2783 | this.walkExpression(expression.object);
|
|---|
| 2784 | if (expression.computed === true) this.walkExpression(expression.property);
|
|---|
| 2785 | }
|
|---|
| 2786 |
|
|---|
| 2787 | walkMemberExpressionWithExpressionName(
|
|---|
| 2788 | expression,
|
|---|
| 2789 | name,
|
|---|
| 2790 | rootInfo,
|
|---|
| 2791 | members,
|
|---|
| 2792 | onUnhandled
|
|---|
| 2793 | ) {
|
|---|
| 2794 | if (expression.object.type === "MemberExpression") {
|
|---|
| 2795 | // optimize the case where expression.object is a MemberExpression too.
|
|---|
| 2796 | // we can keep info here when calling walkMemberExpression directly
|
|---|
| 2797 | const property =
|
|---|
| 2798 | expression.property.name || `${expression.property.value}`;
|
|---|
| 2799 | name = name.slice(0, -property.length - 1);
|
|---|
| 2800 | members.pop();
|
|---|
| 2801 | const result = this.callHooksForInfo(
|
|---|
| 2802 | this.hooks.expression,
|
|---|
| 2803 | name,
|
|---|
| 2804 | expression.object
|
|---|
| 2805 | );
|
|---|
| 2806 | if (result === true) return;
|
|---|
| 2807 | this.walkMemberExpressionWithExpressionName(
|
|---|
| 2808 | expression.object,
|
|---|
| 2809 | name,
|
|---|
| 2810 | rootInfo,
|
|---|
| 2811 | members,
|
|---|
| 2812 | onUnhandled
|
|---|
| 2813 | );
|
|---|
| 2814 | } else if (!onUnhandled || !onUnhandled()) {
|
|---|
| 2815 | this.walkExpression(expression.object);
|
|---|
| 2816 | }
|
|---|
| 2817 | if (expression.computed === true) this.walkExpression(expression.property);
|
|---|
| 2818 | }
|
|---|
| 2819 |
|
|---|
| 2820 | walkThisExpression(expression) {
|
|---|
| 2821 | this.callHooksForName(this.hooks.expression, "this", expression);
|
|---|
| 2822 | }
|
|---|
| 2823 |
|
|---|
| 2824 | walkIdentifier(expression) {
|
|---|
| 2825 | this.callHooksForName(this.hooks.expression, expression.name, expression);
|
|---|
| 2826 | }
|
|---|
| 2827 |
|
|---|
| 2828 | /**
|
|---|
| 2829 | * @param {MetaPropertyNode} metaProperty meta property
|
|---|
| 2830 | */
|
|---|
| 2831 | walkMetaProperty(metaProperty) {
|
|---|
| 2832 | this.hooks.expression.for(getRootName(metaProperty)).call(metaProperty);
|
|---|
| 2833 | }
|
|---|
| 2834 |
|
|---|
| 2835 | callHooksForExpression(hookMap, expr, ...args) {
|
|---|
| 2836 | return this.callHooksForExpressionWithFallback(
|
|---|
| 2837 | hookMap,
|
|---|
| 2838 | expr,
|
|---|
| 2839 | undefined,
|
|---|
| 2840 | undefined,
|
|---|
| 2841 | ...args
|
|---|
| 2842 | );
|
|---|
| 2843 | }
|
|---|
| 2844 |
|
|---|
| 2845 | /**
|
|---|
| 2846 | * @template T
|
|---|
| 2847 | * @template R
|
|---|
| 2848 | * @param {HookMap<SyncBailHook<T, R>>} hookMap hooks the should be called
|
|---|
| 2849 | * @param {MemberExpressionNode} expr expression info
|
|---|
| 2850 | * @param {function(string, string | ScopeInfo | VariableInfo, function(): string[]): any} fallback callback when variable in not handled by hooks
|
|---|
| 2851 | * @param {function(string): any} defined callback when variable is defined
|
|---|
| 2852 | * @param {AsArray<T>} args args for the hook
|
|---|
| 2853 | * @returns {R} result of hook
|
|---|
| 2854 | */
|
|---|
| 2855 | callHooksForExpressionWithFallback(
|
|---|
| 2856 | hookMap,
|
|---|
| 2857 | expr,
|
|---|
| 2858 | fallback,
|
|---|
| 2859 | defined,
|
|---|
| 2860 | ...args
|
|---|
| 2861 | ) {
|
|---|
| 2862 | const exprName = this.getMemberExpressionInfo(
|
|---|
| 2863 | expr,
|
|---|
| 2864 | ALLOWED_MEMBER_TYPES_EXPRESSION
|
|---|
| 2865 | );
|
|---|
| 2866 | if (exprName !== undefined) {
|
|---|
| 2867 | const members = exprName.getMembers();
|
|---|
| 2868 | return this.callHooksForInfoWithFallback(
|
|---|
| 2869 | hookMap,
|
|---|
| 2870 | members.length === 0 ? exprName.rootInfo : exprName.name,
|
|---|
| 2871 | fallback &&
|
|---|
| 2872 | (name => fallback(name, exprName.rootInfo, exprName.getMembers)),
|
|---|
| 2873 | defined && (() => defined(exprName.name)),
|
|---|
| 2874 | ...args
|
|---|
| 2875 | );
|
|---|
| 2876 | }
|
|---|
| 2877 | }
|
|---|
| 2878 |
|
|---|
| 2879 | /**
|
|---|
| 2880 | * @template T
|
|---|
| 2881 | * @template R
|
|---|
| 2882 | * @param {HookMap<SyncBailHook<T, R>>} hookMap hooks the should be called
|
|---|
| 2883 | * @param {string} name key in map
|
|---|
| 2884 | * @param {AsArray<T>} args args for the hook
|
|---|
| 2885 | * @returns {R} result of hook
|
|---|
| 2886 | */
|
|---|
| 2887 | callHooksForName(hookMap, name, ...args) {
|
|---|
| 2888 | return this.callHooksForNameWithFallback(
|
|---|
| 2889 | hookMap,
|
|---|
| 2890 | name,
|
|---|
| 2891 | undefined,
|
|---|
| 2892 | undefined,
|
|---|
| 2893 | ...args
|
|---|
| 2894 | );
|
|---|
| 2895 | }
|
|---|
| 2896 |
|
|---|
| 2897 | /**
|
|---|
| 2898 | * @template T
|
|---|
| 2899 | * @template R
|
|---|
| 2900 | * @param {HookMap<SyncBailHook<T, R>>} hookMap hooks that should be called
|
|---|
| 2901 | * @param {ExportedVariableInfo} info variable info
|
|---|
| 2902 | * @param {AsArray<T>} args args for the hook
|
|---|
| 2903 | * @returns {R} result of hook
|
|---|
| 2904 | */
|
|---|
| 2905 | callHooksForInfo(hookMap, info, ...args) {
|
|---|
| 2906 | return this.callHooksForInfoWithFallback(
|
|---|
| 2907 | hookMap,
|
|---|
| 2908 | info,
|
|---|
| 2909 | undefined,
|
|---|
| 2910 | undefined,
|
|---|
| 2911 | ...args
|
|---|
| 2912 | );
|
|---|
| 2913 | }
|
|---|
| 2914 |
|
|---|
| 2915 | /**
|
|---|
| 2916 | * @template T
|
|---|
| 2917 | * @template R
|
|---|
| 2918 | * @param {HookMap<SyncBailHook<T, R>>} hookMap hooks the should be called
|
|---|
| 2919 | * @param {ExportedVariableInfo} info variable info
|
|---|
| 2920 | * @param {function(string): any} fallback callback when variable in not handled by hooks
|
|---|
| 2921 | * @param {function(): any} defined callback when variable is defined
|
|---|
| 2922 | * @param {AsArray<T>} args args for the hook
|
|---|
| 2923 | * @returns {R} result of hook
|
|---|
| 2924 | */
|
|---|
| 2925 | callHooksForInfoWithFallback(hookMap, info, fallback, defined, ...args) {
|
|---|
| 2926 | let name;
|
|---|
| 2927 | if (typeof info === "string") {
|
|---|
| 2928 | name = info;
|
|---|
| 2929 | } else {
|
|---|
| 2930 | if (!(info instanceof VariableInfo)) {
|
|---|
| 2931 | if (defined !== undefined) {
|
|---|
| 2932 | return defined();
|
|---|
| 2933 | }
|
|---|
| 2934 | return;
|
|---|
| 2935 | }
|
|---|
| 2936 | let tagInfo = info.tagInfo;
|
|---|
| 2937 | while (tagInfo !== undefined) {
|
|---|
| 2938 | const hook = hookMap.get(tagInfo.tag);
|
|---|
| 2939 | if (hook !== undefined) {
|
|---|
| 2940 | this.currentTagData = tagInfo.data;
|
|---|
| 2941 | const result = hook.call(...args);
|
|---|
| 2942 | this.currentTagData = undefined;
|
|---|
| 2943 | if (result !== undefined) return result;
|
|---|
| 2944 | }
|
|---|
| 2945 | tagInfo = tagInfo.next;
|
|---|
| 2946 | }
|
|---|
| 2947 | if (info.freeName === true) {
|
|---|
| 2948 | if (defined !== undefined) {
|
|---|
| 2949 | return defined();
|
|---|
| 2950 | }
|
|---|
| 2951 | return;
|
|---|
| 2952 | }
|
|---|
| 2953 | name = info.freeName;
|
|---|
| 2954 | }
|
|---|
| 2955 | const hook = hookMap.get(name);
|
|---|
| 2956 | if (hook !== undefined) {
|
|---|
| 2957 | const result = hook.call(...args);
|
|---|
| 2958 | if (result !== undefined) return result;
|
|---|
| 2959 | }
|
|---|
| 2960 | if (fallback !== undefined) {
|
|---|
| 2961 | return fallback(name);
|
|---|
| 2962 | }
|
|---|
| 2963 | }
|
|---|
| 2964 |
|
|---|
| 2965 | /**
|
|---|
| 2966 | * @template T
|
|---|
| 2967 | * @template R
|
|---|
| 2968 | * @param {HookMap<SyncBailHook<T, R>>} hookMap hooks the should be called
|
|---|
| 2969 | * @param {string} name key in map
|
|---|
| 2970 | * @param {function(string): any} fallback callback when variable in not handled by hooks
|
|---|
| 2971 | * @param {function(): any} defined callback when variable is defined
|
|---|
| 2972 | * @param {AsArray<T>} args args for the hook
|
|---|
| 2973 | * @returns {R} result of hook
|
|---|
| 2974 | */
|
|---|
| 2975 | callHooksForNameWithFallback(hookMap, name, fallback, defined, ...args) {
|
|---|
| 2976 | return this.callHooksForInfoWithFallback(
|
|---|
| 2977 | hookMap,
|
|---|
| 2978 | this.getVariableInfo(name),
|
|---|
| 2979 | fallback,
|
|---|
| 2980 | defined,
|
|---|
| 2981 | ...args
|
|---|
| 2982 | );
|
|---|
| 2983 | }
|
|---|
| 2984 |
|
|---|
| 2985 | /**
|
|---|
| 2986 | * @deprecated
|
|---|
| 2987 | * @param {any} params scope params
|
|---|
| 2988 | * @param {function(): void} fn inner function
|
|---|
| 2989 | * @returns {void}
|
|---|
| 2990 | */
|
|---|
| 2991 | inScope(params, fn) {
|
|---|
| 2992 | const oldScope = this.scope;
|
|---|
| 2993 | this.scope = {
|
|---|
| 2994 | topLevelScope: oldScope.topLevelScope,
|
|---|
| 2995 | inTry: false,
|
|---|
| 2996 | inShorthand: false,
|
|---|
| 2997 | isStrict: oldScope.isStrict,
|
|---|
| 2998 | isAsmJs: oldScope.isAsmJs,
|
|---|
| 2999 | definitions: oldScope.definitions.createChild()
|
|---|
| 3000 | };
|
|---|
| 3001 |
|
|---|
| 3002 | this.undefineVariable("this");
|
|---|
| 3003 |
|
|---|
| 3004 | this.enterPatterns(params, (ident, pattern) => {
|
|---|
| 3005 | this.defineVariable(ident);
|
|---|
| 3006 | });
|
|---|
| 3007 |
|
|---|
| 3008 | fn();
|
|---|
| 3009 |
|
|---|
| 3010 | this.scope = oldScope;
|
|---|
| 3011 | }
|
|---|
| 3012 |
|
|---|
| 3013 | inFunctionScope(hasThis, params, fn) {
|
|---|
| 3014 | const oldScope = this.scope;
|
|---|
| 3015 | this.scope = {
|
|---|
| 3016 | topLevelScope: oldScope.topLevelScope,
|
|---|
| 3017 | inTry: false,
|
|---|
| 3018 | inShorthand: false,
|
|---|
| 3019 | isStrict: oldScope.isStrict,
|
|---|
| 3020 | isAsmJs: oldScope.isAsmJs,
|
|---|
| 3021 | definitions: oldScope.definitions.createChild()
|
|---|
| 3022 | };
|
|---|
| 3023 |
|
|---|
| 3024 | if (hasThis) {
|
|---|
| 3025 | this.undefineVariable("this");
|
|---|
| 3026 | }
|
|---|
| 3027 |
|
|---|
| 3028 | this.enterPatterns(params, (ident, pattern) => {
|
|---|
| 3029 | this.defineVariable(ident);
|
|---|
| 3030 | });
|
|---|
| 3031 |
|
|---|
| 3032 | fn();
|
|---|
| 3033 |
|
|---|
| 3034 | this.scope = oldScope;
|
|---|
| 3035 | }
|
|---|
| 3036 |
|
|---|
| 3037 | inBlockScope(fn) {
|
|---|
| 3038 | const oldScope = this.scope;
|
|---|
| 3039 | this.scope = {
|
|---|
| 3040 | topLevelScope: oldScope.topLevelScope,
|
|---|
| 3041 | inTry: oldScope.inTry,
|
|---|
| 3042 | inShorthand: false,
|
|---|
| 3043 | isStrict: oldScope.isStrict,
|
|---|
| 3044 | isAsmJs: oldScope.isAsmJs,
|
|---|
| 3045 | definitions: oldScope.definitions.createChild()
|
|---|
| 3046 | };
|
|---|
| 3047 |
|
|---|
| 3048 | fn();
|
|---|
| 3049 |
|
|---|
| 3050 | this.scope = oldScope;
|
|---|
| 3051 | }
|
|---|
| 3052 |
|
|---|
| 3053 | detectMode(statements) {
|
|---|
| 3054 | const isLiteral =
|
|---|
| 3055 | statements.length >= 1 &&
|
|---|
| 3056 | statements[0].type === "ExpressionStatement" &&
|
|---|
| 3057 | statements[0].expression.type === "Literal";
|
|---|
| 3058 | if (isLiteral && statements[0].expression.value === "use strict") {
|
|---|
| 3059 | this.scope.isStrict = true;
|
|---|
| 3060 | }
|
|---|
| 3061 | if (isLiteral && statements[0].expression.value === "use asm") {
|
|---|
| 3062 | this.scope.isAsmJs = true;
|
|---|
| 3063 | }
|
|---|
| 3064 | }
|
|---|
| 3065 |
|
|---|
| 3066 | enterPatterns(patterns, onIdent) {
|
|---|
| 3067 | for (const pattern of patterns) {
|
|---|
| 3068 | if (typeof pattern !== "string") {
|
|---|
| 3069 | this.enterPattern(pattern, onIdent);
|
|---|
| 3070 | } else if (pattern) {
|
|---|
| 3071 | onIdent(pattern);
|
|---|
| 3072 | }
|
|---|
| 3073 | }
|
|---|
| 3074 | }
|
|---|
| 3075 |
|
|---|
| 3076 | enterPattern(pattern, onIdent) {
|
|---|
| 3077 | if (!pattern) return;
|
|---|
| 3078 | switch (pattern.type) {
|
|---|
| 3079 | case "ArrayPattern":
|
|---|
| 3080 | this.enterArrayPattern(pattern, onIdent);
|
|---|
| 3081 | break;
|
|---|
| 3082 | case "AssignmentPattern":
|
|---|
| 3083 | this.enterAssignmentPattern(pattern, onIdent);
|
|---|
| 3084 | break;
|
|---|
| 3085 | case "Identifier":
|
|---|
| 3086 | this.enterIdentifier(pattern, onIdent);
|
|---|
| 3087 | break;
|
|---|
| 3088 | case "ObjectPattern":
|
|---|
| 3089 | this.enterObjectPattern(pattern, onIdent);
|
|---|
| 3090 | break;
|
|---|
| 3091 | case "RestElement":
|
|---|
| 3092 | this.enterRestElement(pattern, onIdent);
|
|---|
| 3093 | break;
|
|---|
| 3094 | case "Property":
|
|---|
| 3095 | if (pattern.shorthand && pattern.value.type === "Identifier") {
|
|---|
| 3096 | this.scope.inShorthand = pattern.value.name;
|
|---|
| 3097 | this.enterIdentifier(pattern.value, onIdent);
|
|---|
| 3098 | this.scope.inShorthand = false;
|
|---|
| 3099 | } else {
|
|---|
| 3100 | this.enterPattern(pattern.value, onIdent);
|
|---|
| 3101 | }
|
|---|
| 3102 | break;
|
|---|
| 3103 | }
|
|---|
| 3104 | }
|
|---|
| 3105 |
|
|---|
| 3106 | enterIdentifier(pattern, onIdent) {
|
|---|
| 3107 | if (!this.callHooksForName(this.hooks.pattern, pattern.name, pattern)) {
|
|---|
| 3108 | onIdent(pattern.name, pattern);
|
|---|
| 3109 | }
|
|---|
| 3110 | }
|
|---|
| 3111 |
|
|---|
| 3112 | enterObjectPattern(pattern, onIdent) {
|
|---|
| 3113 | for (
|
|---|
| 3114 | let propIndex = 0, len = pattern.properties.length;
|
|---|
| 3115 | propIndex < len;
|
|---|
| 3116 | propIndex++
|
|---|
| 3117 | ) {
|
|---|
| 3118 | const prop = pattern.properties[propIndex];
|
|---|
| 3119 | this.enterPattern(prop, onIdent);
|
|---|
| 3120 | }
|
|---|
| 3121 | }
|
|---|
| 3122 |
|
|---|
| 3123 | enterArrayPattern(pattern, onIdent) {
|
|---|
| 3124 | for (
|
|---|
| 3125 | let elementIndex = 0, len = pattern.elements.length;
|
|---|
| 3126 | elementIndex < len;
|
|---|
| 3127 | elementIndex++
|
|---|
| 3128 | ) {
|
|---|
| 3129 | const element = pattern.elements[elementIndex];
|
|---|
| 3130 | this.enterPattern(element, onIdent);
|
|---|
| 3131 | }
|
|---|
| 3132 | }
|
|---|
| 3133 |
|
|---|
| 3134 | enterRestElement(pattern, onIdent) {
|
|---|
| 3135 | this.enterPattern(pattern.argument, onIdent);
|
|---|
| 3136 | }
|
|---|
| 3137 |
|
|---|
| 3138 | enterAssignmentPattern(pattern, onIdent) {
|
|---|
| 3139 | this.enterPattern(pattern.left, onIdent);
|
|---|
| 3140 | }
|
|---|
| 3141 |
|
|---|
| 3142 | /**
|
|---|
| 3143 | * @param {ExpressionNode} expression expression node
|
|---|
| 3144 | * @returns {BasicEvaluatedExpression | undefined} evaluation result
|
|---|
| 3145 | */
|
|---|
| 3146 | evaluateExpression(expression) {
|
|---|
| 3147 | try {
|
|---|
| 3148 | const hook = this.hooks.evaluate.get(expression.type);
|
|---|
| 3149 | if (hook !== undefined) {
|
|---|
| 3150 | const result = hook.call(expression);
|
|---|
| 3151 | if (result !== undefined) {
|
|---|
| 3152 | if (result) {
|
|---|
| 3153 | result.setExpression(expression);
|
|---|
| 3154 | }
|
|---|
| 3155 | return result;
|
|---|
| 3156 | }
|
|---|
| 3157 | }
|
|---|
| 3158 | } catch (e) {
|
|---|
| 3159 | console.warn(e);
|
|---|
| 3160 | // ignore error
|
|---|
| 3161 | }
|
|---|
| 3162 | return new BasicEvaluatedExpression()
|
|---|
| 3163 | .setRange(expression.range)
|
|---|
| 3164 | .setExpression(expression);
|
|---|
| 3165 | }
|
|---|
| 3166 |
|
|---|
| 3167 | parseString(expression) {
|
|---|
| 3168 | switch (expression.type) {
|
|---|
| 3169 | case "BinaryExpression":
|
|---|
| 3170 | if (expression.operator === "+") {
|
|---|
| 3171 | return (
|
|---|
| 3172 | this.parseString(expression.left) +
|
|---|
| 3173 | this.parseString(expression.right)
|
|---|
| 3174 | );
|
|---|
| 3175 | }
|
|---|
| 3176 | break;
|
|---|
| 3177 | case "Literal":
|
|---|
| 3178 | return expression.value + "";
|
|---|
| 3179 | }
|
|---|
| 3180 | throw new Error(
|
|---|
| 3181 | expression.type + " is not supported as parameter for require"
|
|---|
| 3182 | );
|
|---|
| 3183 | }
|
|---|
| 3184 |
|
|---|
| 3185 | parseCalculatedString(expression) {
|
|---|
| 3186 | switch (expression.type) {
|
|---|
| 3187 | case "BinaryExpression":
|
|---|
| 3188 | if (expression.operator === "+") {
|
|---|
| 3189 | const left = this.parseCalculatedString(expression.left);
|
|---|
| 3190 | const right = this.parseCalculatedString(expression.right);
|
|---|
| 3191 | if (left.code) {
|
|---|
| 3192 | return {
|
|---|
| 3193 | range: left.range,
|
|---|
| 3194 | value: left.value,
|
|---|
| 3195 | code: true,
|
|---|
| 3196 | conditional: false
|
|---|
| 3197 | };
|
|---|
| 3198 | } else if (right.code) {
|
|---|
| 3199 | return {
|
|---|
| 3200 | range: [
|
|---|
| 3201 | left.range[0],
|
|---|
| 3202 | right.range ? right.range[1] : left.range[1]
|
|---|
| 3203 | ],
|
|---|
| 3204 | value: left.value + right.value,
|
|---|
| 3205 | code: true,
|
|---|
| 3206 | conditional: false
|
|---|
| 3207 | };
|
|---|
| 3208 | } else {
|
|---|
| 3209 | return {
|
|---|
| 3210 | range: [left.range[0], right.range[1]],
|
|---|
| 3211 | value: left.value + right.value,
|
|---|
| 3212 | code: false,
|
|---|
| 3213 | conditional: false
|
|---|
| 3214 | };
|
|---|
| 3215 | }
|
|---|
| 3216 | }
|
|---|
| 3217 | break;
|
|---|
| 3218 | case "ConditionalExpression": {
|
|---|
| 3219 | const consequent = this.parseCalculatedString(expression.consequent);
|
|---|
| 3220 | const alternate = this.parseCalculatedString(expression.alternate);
|
|---|
| 3221 | const items = [];
|
|---|
| 3222 | if (consequent.conditional) {
|
|---|
| 3223 | items.push(...consequent.conditional);
|
|---|
| 3224 | } else if (!consequent.code) {
|
|---|
| 3225 | items.push(consequent);
|
|---|
| 3226 | } else {
|
|---|
| 3227 | break;
|
|---|
| 3228 | }
|
|---|
| 3229 | if (alternate.conditional) {
|
|---|
| 3230 | items.push(...alternate.conditional);
|
|---|
| 3231 | } else if (!alternate.code) {
|
|---|
| 3232 | items.push(alternate);
|
|---|
| 3233 | } else {
|
|---|
| 3234 | break;
|
|---|
| 3235 | }
|
|---|
| 3236 | return {
|
|---|
| 3237 | range: undefined,
|
|---|
| 3238 | value: "",
|
|---|
| 3239 | code: true,
|
|---|
| 3240 | conditional: items
|
|---|
| 3241 | };
|
|---|
| 3242 | }
|
|---|
| 3243 | case "Literal":
|
|---|
| 3244 | return {
|
|---|
| 3245 | range: expression.range,
|
|---|
| 3246 | value: expression.value + "",
|
|---|
| 3247 | code: false,
|
|---|
| 3248 | conditional: false
|
|---|
| 3249 | };
|
|---|
| 3250 | }
|
|---|
| 3251 | return {
|
|---|
| 3252 | range: undefined,
|
|---|
| 3253 | value: "",
|
|---|
| 3254 | code: true,
|
|---|
| 3255 | conditional: false
|
|---|
| 3256 | };
|
|---|
| 3257 | }
|
|---|
| 3258 |
|
|---|
| 3259 | /**
|
|---|
| 3260 | * @param {string | Buffer | PreparsedAst} source the source to parse
|
|---|
| 3261 | * @param {ParserState} state the parser state
|
|---|
| 3262 | * @returns {ParserState} the parser state
|
|---|
| 3263 | */
|
|---|
| 3264 | parse(source, state) {
|
|---|
| 3265 | let ast;
|
|---|
| 3266 | let comments;
|
|---|
| 3267 | const semicolons = new Set();
|
|---|
| 3268 | if (source === null) {
|
|---|
| 3269 | throw new Error("source must not be null");
|
|---|
| 3270 | }
|
|---|
| 3271 | if (Buffer.isBuffer(source)) {
|
|---|
| 3272 | source = source.toString("utf-8");
|
|---|
| 3273 | }
|
|---|
| 3274 | if (typeof source === "object") {
|
|---|
| 3275 | ast = /** @type {ProgramNode} */ (source);
|
|---|
| 3276 | comments = source.comments;
|
|---|
| 3277 | } else {
|
|---|
| 3278 | comments = [];
|
|---|
| 3279 | ast = JavascriptParser._parse(source, {
|
|---|
| 3280 | sourceType: this.sourceType,
|
|---|
| 3281 | onComment: comments,
|
|---|
| 3282 | onInsertedSemicolon: pos => semicolons.add(pos)
|
|---|
| 3283 | });
|
|---|
| 3284 | }
|
|---|
| 3285 |
|
|---|
| 3286 | const oldScope = this.scope;
|
|---|
| 3287 | const oldState = this.state;
|
|---|
| 3288 | const oldComments = this.comments;
|
|---|
| 3289 | const oldSemicolons = this.semicolons;
|
|---|
| 3290 | const oldStatementPath = this.statementPath;
|
|---|
| 3291 | const oldPrevStatement = this.prevStatement;
|
|---|
| 3292 | this.scope = {
|
|---|
| 3293 | topLevelScope: true,
|
|---|
| 3294 | inTry: false,
|
|---|
| 3295 | inShorthand: false,
|
|---|
| 3296 | isStrict: false,
|
|---|
| 3297 | isAsmJs: false,
|
|---|
| 3298 | definitions: new StackedMap()
|
|---|
| 3299 | };
|
|---|
| 3300 | /** @type {ParserState} */
|
|---|
| 3301 | this.state = state;
|
|---|
| 3302 | this.comments = comments;
|
|---|
| 3303 | this.semicolons = semicolons;
|
|---|
| 3304 | this.statementPath = [];
|
|---|
| 3305 | this.prevStatement = undefined;
|
|---|
| 3306 | if (this.hooks.program.call(ast, comments) === undefined) {
|
|---|
| 3307 | this.detectMode(ast.body);
|
|---|
| 3308 | this.preWalkStatements(ast.body);
|
|---|
| 3309 | this.prevStatement = undefined;
|
|---|
| 3310 | this.blockPreWalkStatements(ast.body);
|
|---|
| 3311 | this.prevStatement = undefined;
|
|---|
| 3312 | this.walkStatements(ast.body);
|
|---|
| 3313 | }
|
|---|
| 3314 | this.hooks.finish.call(ast, comments);
|
|---|
| 3315 | this.scope = oldScope;
|
|---|
| 3316 | /** @type {ParserState} */
|
|---|
| 3317 | this.state = oldState;
|
|---|
| 3318 | this.comments = oldComments;
|
|---|
| 3319 | this.semicolons = oldSemicolons;
|
|---|
| 3320 | this.statementPath = oldStatementPath;
|
|---|
| 3321 | this.prevStatement = oldPrevStatement;
|
|---|
| 3322 | return state;
|
|---|
| 3323 | }
|
|---|
| 3324 |
|
|---|
| 3325 | evaluate(source) {
|
|---|
| 3326 | const ast = JavascriptParser._parse("(" + source + ")", {
|
|---|
| 3327 | sourceType: this.sourceType,
|
|---|
| 3328 | locations: false
|
|---|
| 3329 | });
|
|---|
| 3330 | if (ast.body.length !== 1 || ast.body[0].type !== "ExpressionStatement") {
|
|---|
| 3331 | throw new Error("evaluate: Source is not a expression");
|
|---|
| 3332 | }
|
|---|
| 3333 | return this.evaluateExpression(ast.body[0].expression);
|
|---|
| 3334 | }
|
|---|
| 3335 |
|
|---|
| 3336 | /**
|
|---|
| 3337 | * @param {ExpressionNode | DeclarationNode | PrivateIdentifierNode | null | undefined} expr an expression
|
|---|
| 3338 | * @param {number} commentsStartPos source position from which annotation comments are checked
|
|---|
| 3339 | * @returns {boolean} true, when the expression is pure
|
|---|
| 3340 | */
|
|---|
| 3341 | isPure(expr, commentsStartPos) {
|
|---|
| 3342 | if (!expr) return true;
|
|---|
| 3343 | const result = this.hooks.isPure
|
|---|
| 3344 | .for(expr.type)
|
|---|
| 3345 | .call(expr, commentsStartPos);
|
|---|
| 3346 | if (typeof result === "boolean") return result;
|
|---|
| 3347 | switch (expr.type) {
|
|---|
| 3348 | case "ClassDeclaration":
|
|---|
| 3349 | case "ClassExpression": {
|
|---|
| 3350 | if (expr.body.type !== "ClassBody") return false;
|
|---|
| 3351 | if (expr.superClass && !this.isPure(expr.superClass, expr.range[0])) {
|
|---|
| 3352 | return false;
|
|---|
| 3353 | }
|
|---|
| 3354 | const items =
|
|---|
| 3355 | /** @type {(MethodDefinitionNode | PropertyDefinitionNode)[]} */ (
|
|---|
| 3356 | expr.body.body
|
|---|
| 3357 | );
|
|---|
| 3358 | return items.every(
|
|---|
| 3359 | item =>
|
|---|
| 3360 | (!item.computed ||
|
|---|
| 3361 | !item.key ||
|
|---|
| 3362 | this.isPure(item.key, item.range[0])) &&
|
|---|
| 3363 | (!item.static ||
|
|---|
| 3364 | !item.value ||
|
|---|
| 3365 | this.isPure(
|
|---|
| 3366 | item.value,
|
|---|
| 3367 | item.key ? item.key.range[1] : item.range[0]
|
|---|
| 3368 | ))
|
|---|
| 3369 | );
|
|---|
| 3370 | }
|
|---|
| 3371 |
|
|---|
| 3372 | case "FunctionDeclaration":
|
|---|
| 3373 | case "FunctionExpression":
|
|---|
| 3374 | case "ArrowFunctionExpression":
|
|---|
| 3375 | case "Literal":
|
|---|
| 3376 | case "PrivateIdentifier":
|
|---|
| 3377 | return true;
|
|---|
| 3378 |
|
|---|
| 3379 | case "VariableDeclaration":
|
|---|
| 3380 | return expr.declarations.every(decl =>
|
|---|
| 3381 | this.isPure(decl.init, decl.range[0])
|
|---|
| 3382 | );
|
|---|
| 3383 |
|
|---|
| 3384 | case "ConditionalExpression":
|
|---|
| 3385 | return (
|
|---|
| 3386 | this.isPure(expr.test, commentsStartPos) &&
|
|---|
| 3387 | this.isPure(expr.consequent, expr.test.range[1]) &&
|
|---|
| 3388 | this.isPure(expr.alternate, expr.consequent.range[1])
|
|---|
| 3389 | );
|
|---|
| 3390 |
|
|---|
| 3391 | case "SequenceExpression":
|
|---|
| 3392 | return expr.expressions.every(expr => {
|
|---|
| 3393 | const pureFlag = this.isPure(expr, commentsStartPos);
|
|---|
| 3394 | commentsStartPos = expr.range[1];
|
|---|
| 3395 | return pureFlag;
|
|---|
| 3396 | });
|
|---|
| 3397 |
|
|---|
| 3398 | case "CallExpression": {
|
|---|
| 3399 | const pureFlag =
|
|---|
| 3400 | expr.range[0] - commentsStartPos > 12 &&
|
|---|
| 3401 | this.getComments([commentsStartPos, expr.range[0]]).some(
|
|---|
| 3402 | comment =>
|
|---|
| 3403 | comment.type === "Block" &&
|
|---|
| 3404 | /^\s*(#|@)__PURE__\s*$/.test(comment.value)
|
|---|
| 3405 | );
|
|---|
| 3406 | if (!pureFlag) return false;
|
|---|
| 3407 | commentsStartPos = expr.callee.range[1];
|
|---|
| 3408 | return expr.arguments.every(arg => {
|
|---|
| 3409 | if (arg.type === "SpreadElement") return false;
|
|---|
| 3410 | const pureFlag = this.isPure(arg, commentsStartPos);
|
|---|
| 3411 | commentsStartPos = arg.range[1];
|
|---|
| 3412 | return pureFlag;
|
|---|
| 3413 | });
|
|---|
| 3414 | }
|
|---|
| 3415 | }
|
|---|
| 3416 | const evaluated = this.evaluateExpression(expr);
|
|---|
| 3417 | return !evaluated.couldHaveSideEffects();
|
|---|
| 3418 | }
|
|---|
| 3419 |
|
|---|
| 3420 | getComments(range) {
|
|---|
| 3421 | const [rangeStart, rangeEnd] = range;
|
|---|
| 3422 | const compare = (comment, needle) => comment.range[0] - needle;
|
|---|
| 3423 | let idx = binarySearchBounds.ge(this.comments, rangeStart, compare);
|
|---|
| 3424 | let commentsInRange = [];
|
|---|
| 3425 | while (this.comments[idx] && this.comments[idx].range[1] <= rangeEnd) {
|
|---|
| 3426 | commentsInRange.push(this.comments[idx]);
|
|---|
| 3427 | idx++;
|
|---|
| 3428 | }
|
|---|
| 3429 |
|
|---|
| 3430 | return commentsInRange;
|
|---|
| 3431 | }
|
|---|
| 3432 |
|
|---|
| 3433 | /**
|
|---|
| 3434 | * @param {number} pos source code position
|
|---|
| 3435 | * @returns {boolean} true when a semicolon has been inserted before this position, false if not
|
|---|
| 3436 | */
|
|---|
| 3437 | isAsiPosition(pos) {
|
|---|
| 3438 | const currentStatement = this.statementPath[this.statementPath.length - 1];
|
|---|
| 3439 | if (currentStatement === undefined) throw new Error("Not in statement");
|
|---|
| 3440 | return (
|
|---|
| 3441 | // Either asking directly for the end position of the current statement
|
|---|
| 3442 | (currentStatement.range[1] === pos && this.semicolons.has(pos)) ||
|
|---|
| 3443 | // Or asking for the start position of the current statement,
|
|---|
| 3444 | // here we have to check multiple things
|
|---|
| 3445 | (currentStatement.range[0] === pos &&
|
|---|
| 3446 | // is there a previous statement which might be relevant?
|
|---|
| 3447 | this.prevStatement !== undefined &&
|
|---|
| 3448 | // is the end position of the previous statement an ASI position?
|
|---|
| 3449 | this.semicolons.has(this.prevStatement.range[1]))
|
|---|
| 3450 | );
|
|---|
| 3451 | }
|
|---|
| 3452 |
|
|---|
| 3453 | /**
|
|---|
| 3454 | * @param {number} pos source code position
|
|---|
| 3455 | * @returns {void}
|
|---|
| 3456 | */
|
|---|
| 3457 | unsetAsiPosition(pos) {
|
|---|
| 3458 | this.semicolons.delete(pos);
|
|---|
| 3459 | }
|
|---|
| 3460 |
|
|---|
| 3461 | isStatementLevelExpression(expr) {
|
|---|
| 3462 | const currentStatement = this.statementPath[this.statementPath.length - 1];
|
|---|
| 3463 | return (
|
|---|
| 3464 | expr === currentStatement ||
|
|---|
| 3465 | (currentStatement.type === "ExpressionStatement" &&
|
|---|
| 3466 | currentStatement.expression === expr)
|
|---|
| 3467 | );
|
|---|
| 3468 | }
|
|---|
| 3469 |
|
|---|
| 3470 | getTagData(name, tag) {
|
|---|
| 3471 | const info = this.scope.definitions.get(name);
|
|---|
| 3472 | if (info instanceof VariableInfo) {
|
|---|
| 3473 | let tagInfo = info.tagInfo;
|
|---|
| 3474 | while (tagInfo !== undefined) {
|
|---|
| 3475 | if (tagInfo.tag === tag) return tagInfo.data;
|
|---|
| 3476 | tagInfo = tagInfo.next;
|
|---|
| 3477 | }
|
|---|
| 3478 | }
|
|---|
| 3479 | }
|
|---|
| 3480 |
|
|---|
| 3481 | tagVariable(name, tag, data) {
|
|---|
| 3482 | const oldInfo = this.scope.definitions.get(name);
|
|---|
| 3483 | /** @type {VariableInfo} */
|
|---|
| 3484 | let newInfo;
|
|---|
| 3485 | if (oldInfo === undefined) {
|
|---|
| 3486 | newInfo = new VariableInfo(this.scope, name, {
|
|---|
| 3487 | tag,
|
|---|
| 3488 | data,
|
|---|
| 3489 | next: undefined
|
|---|
| 3490 | });
|
|---|
| 3491 | } else if (oldInfo instanceof VariableInfo) {
|
|---|
| 3492 | newInfo = new VariableInfo(oldInfo.declaredScope, oldInfo.freeName, {
|
|---|
| 3493 | tag,
|
|---|
| 3494 | data,
|
|---|
| 3495 | next: oldInfo.tagInfo
|
|---|
| 3496 | });
|
|---|
| 3497 | } else {
|
|---|
| 3498 | newInfo = new VariableInfo(oldInfo, true, {
|
|---|
| 3499 | tag,
|
|---|
| 3500 | data,
|
|---|
| 3501 | next: undefined
|
|---|
| 3502 | });
|
|---|
| 3503 | }
|
|---|
| 3504 | this.scope.definitions.set(name, newInfo);
|
|---|
| 3505 | }
|
|---|
| 3506 |
|
|---|
| 3507 | defineVariable(name) {
|
|---|
| 3508 | const oldInfo = this.scope.definitions.get(name);
|
|---|
| 3509 | // Don't redefine variable in same scope to keep existing tags
|
|---|
| 3510 | if (oldInfo instanceof VariableInfo && oldInfo.declaredScope === this.scope)
|
|---|
| 3511 | return;
|
|---|
| 3512 | this.scope.definitions.set(name, this.scope);
|
|---|
| 3513 | }
|
|---|
| 3514 |
|
|---|
| 3515 | undefineVariable(name) {
|
|---|
| 3516 | this.scope.definitions.delete(name);
|
|---|
| 3517 | }
|
|---|
| 3518 |
|
|---|
| 3519 | isVariableDefined(name) {
|
|---|
| 3520 | const info = this.scope.definitions.get(name);
|
|---|
| 3521 | if (info === undefined) return false;
|
|---|
| 3522 | if (info instanceof VariableInfo) {
|
|---|
| 3523 | return info.freeName === true;
|
|---|
| 3524 | }
|
|---|
| 3525 | return true;
|
|---|
| 3526 | }
|
|---|
| 3527 |
|
|---|
| 3528 | /**
|
|---|
| 3529 | * @param {string} name variable name
|
|---|
| 3530 | * @returns {ExportedVariableInfo} info for this variable
|
|---|
| 3531 | */
|
|---|
| 3532 | getVariableInfo(name) {
|
|---|
| 3533 | const value = this.scope.definitions.get(name);
|
|---|
| 3534 | if (value === undefined) {
|
|---|
| 3535 | return name;
|
|---|
| 3536 | } else {
|
|---|
| 3537 | return value;
|
|---|
| 3538 | }
|
|---|
| 3539 | }
|
|---|
| 3540 |
|
|---|
| 3541 | /**
|
|---|
| 3542 | * @param {string} name variable name
|
|---|
| 3543 | * @param {ExportedVariableInfo} variableInfo new info for this variable
|
|---|
| 3544 | * @returns {void}
|
|---|
| 3545 | */
|
|---|
| 3546 | setVariable(name, variableInfo) {
|
|---|
| 3547 | if (typeof variableInfo === "string") {
|
|---|
| 3548 | if (variableInfo === name) {
|
|---|
| 3549 | this.scope.definitions.delete(name);
|
|---|
| 3550 | } else {
|
|---|
| 3551 | this.scope.definitions.set(
|
|---|
| 3552 | name,
|
|---|
| 3553 | new VariableInfo(this.scope, variableInfo, undefined)
|
|---|
| 3554 | );
|
|---|
| 3555 | }
|
|---|
| 3556 | } else {
|
|---|
| 3557 | this.scope.definitions.set(name, variableInfo);
|
|---|
| 3558 | }
|
|---|
| 3559 | }
|
|---|
| 3560 |
|
|---|
| 3561 | parseCommentOptions(range) {
|
|---|
| 3562 | const comments = this.getComments(range);
|
|---|
| 3563 | if (comments.length === 0) {
|
|---|
| 3564 | return EMPTY_COMMENT_OPTIONS;
|
|---|
| 3565 | }
|
|---|
| 3566 | let options = {};
|
|---|
| 3567 | let errors = [];
|
|---|
| 3568 | for (const comment of comments) {
|
|---|
| 3569 | const { value } = comment;
|
|---|
| 3570 | if (value && webpackCommentRegExp.test(value)) {
|
|---|
| 3571 | // try compile only if webpack options comment is present
|
|---|
| 3572 | try {
|
|---|
| 3573 | const val = vm.runInNewContext(`(function(){return {${value}};})()`);
|
|---|
| 3574 | Object.assign(options, val);
|
|---|
| 3575 | } catch (e) {
|
|---|
| 3576 | e.comment = comment;
|
|---|
| 3577 | errors.push(e);
|
|---|
| 3578 | }
|
|---|
| 3579 | }
|
|---|
| 3580 | }
|
|---|
| 3581 | return { options, errors };
|
|---|
| 3582 | }
|
|---|
| 3583 |
|
|---|
| 3584 | /**
|
|---|
| 3585 | * @param {MemberExpressionNode} expression a member expression
|
|---|
| 3586 | * @returns {{ members: string[], object: ExpressionNode | SuperNode }} member names (reverse order) and remaining object
|
|---|
| 3587 | */
|
|---|
| 3588 | extractMemberExpressionChain(expression) {
|
|---|
| 3589 | /** @type {AnyNode} */
|
|---|
| 3590 | let expr = expression;
|
|---|
| 3591 | const members = [];
|
|---|
| 3592 | while (expr.type === "MemberExpression") {
|
|---|
| 3593 | if (expr.computed) {
|
|---|
| 3594 | if (expr.property.type !== "Literal") break;
|
|---|
| 3595 | members.push(`${expr.property.value}`);
|
|---|
| 3596 | } else {
|
|---|
| 3597 | if (expr.property.type !== "Identifier") break;
|
|---|
| 3598 | members.push(expr.property.name);
|
|---|
| 3599 | }
|
|---|
| 3600 | expr = expr.object;
|
|---|
| 3601 | }
|
|---|
| 3602 | return {
|
|---|
| 3603 | members,
|
|---|
| 3604 | object: expr
|
|---|
| 3605 | };
|
|---|
| 3606 | }
|
|---|
| 3607 |
|
|---|
| 3608 | /**
|
|---|
| 3609 | * @param {string} varName variable name
|
|---|
| 3610 | * @returns {{name: string, info: VariableInfo | string}} name of the free variable and variable info for that
|
|---|
| 3611 | */
|
|---|
| 3612 | getFreeInfoFromVariable(varName) {
|
|---|
| 3613 | const info = this.getVariableInfo(varName);
|
|---|
| 3614 | let name;
|
|---|
| 3615 | if (info instanceof VariableInfo) {
|
|---|
| 3616 | name = info.freeName;
|
|---|
| 3617 | if (typeof name !== "string") return undefined;
|
|---|
| 3618 | } else if (typeof info !== "string") {
|
|---|
| 3619 | return undefined;
|
|---|
| 3620 | } else {
|
|---|
| 3621 | name = info;
|
|---|
| 3622 | }
|
|---|
| 3623 | return { info, name };
|
|---|
| 3624 | }
|
|---|
| 3625 |
|
|---|
| 3626 | /** @typedef {{ type: "call", call: CallExpressionNode, calleeName: string, rootInfo: string | VariableInfo, getCalleeMembers: () => string[], name: string, getMembers: () => string[]}} CallExpressionInfo */
|
|---|
| 3627 | /** @typedef {{ type: "expression", rootInfo: string | VariableInfo, name: string, getMembers: () => string[]}} ExpressionExpressionInfo */
|
|---|
| 3628 |
|
|---|
| 3629 | /**
|
|---|
| 3630 | * @param {MemberExpressionNode} expression a member expression
|
|---|
| 3631 | * @param {number} allowedTypes which types should be returned, presented in bit mask
|
|---|
| 3632 | * @returns {CallExpressionInfo | ExpressionExpressionInfo | undefined} expression info
|
|---|
| 3633 | */
|
|---|
| 3634 | getMemberExpressionInfo(expression, allowedTypes) {
|
|---|
| 3635 | const { object, members } = this.extractMemberExpressionChain(expression);
|
|---|
| 3636 | switch (object.type) {
|
|---|
| 3637 | case "CallExpression": {
|
|---|
| 3638 | if ((allowedTypes & ALLOWED_MEMBER_TYPES_CALL_EXPRESSION) === 0)
|
|---|
| 3639 | return undefined;
|
|---|
| 3640 | let callee = object.callee;
|
|---|
| 3641 | let rootMembers = EMPTY_ARRAY;
|
|---|
| 3642 | if (callee.type === "MemberExpression") {
|
|---|
| 3643 | ({ object: callee, members: rootMembers } =
|
|---|
| 3644 | this.extractMemberExpressionChain(callee));
|
|---|
| 3645 | }
|
|---|
| 3646 | const rootName = getRootName(callee);
|
|---|
| 3647 | if (!rootName) return undefined;
|
|---|
| 3648 | const result = this.getFreeInfoFromVariable(rootName);
|
|---|
| 3649 | if (!result) return undefined;
|
|---|
| 3650 | const { info: rootInfo, name: resolvedRoot } = result;
|
|---|
| 3651 | const calleeName = objectAndMembersToName(resolvedRoot, rootMembers);
|
|---|
| 3652 | return {
|
|---|
| 3653 | type: "call",
|
|---|
| 3654 | call: object,
|
|---|
| 3655 | calleeName,
|
|---|
| 3656 | rootInfo,
|
|---|
| 3657 | getCalleeMembers: memoize(() => rootMembers.reverse()),
|
|---|
| 3658 | name: objectAndMembersToName(`${calleeName}()`, members),
|
|---|
| 3659 | getMembers: memoize(() => members.reverse())
|
|---|
| 3660 | };
|
|---|
| 3661 | }
|
|---|
| 3662 | case "Identifier":
|
|---|
| 3663 | case "MetaProperty":
|
|---|
| 3664 | case "ThisExpression": {
|
|---|
| 3665 | if ((allowedTypes & ALLOWED_MEMBER_TYPES_EXPRESSION) === 0)
|
|---|
| 3666 | return undefined;
|
|---|
| 3667 | const rootName = getRootName(object);
|
|---|
| 3668 | if (!rootName) return undefined;
|
|---|
| 3669 |
|
|---|
| 3670 | const result = this.getFreeInfoFromVariable(rootName);
|
|---|
| 3671 | if (!result) return undefined;
|
|---|
| 3672 | const { info: rootInfo, name: resolvedRoot } = result;
|
|---|
| 3673 | return {
|
|---|
| 3674 | type: "expression",
|
|---|
| 3675 | name: objectAndMembersToName(resolvedRoot, members),
|
|---|
| 3676 | rootInfo,
|
|---|
| 3677 | getMembers: memoize(() => members.reverse())
|
|---|
| 3678 | };
|
|---|
| 3679 | }
|
|---|
| 3680 | }
|
|---|
| 3681 | }
|
|---|
| 3682 |
|
|---|
| 3683 | /**
|
|---|
| 3684 | * @param {MemberExpressionNode} expression an expression
|
|---|
| 3685 | * @returns {{ name: string, rootInfo: ExportedVariableInfo, getMembers: () => string[]}} name info
|
|---|
| 3686 | */
|
|---|
| 3687 | getNameForExpression(expression) {
|
|---|
| 3688 | return this.getMemberExpressionInfo(
|
|---|
| 3689 | expression,
|
|---|
| 3690 | ALLOWED_MEMBER_TYPES_EXPRESSION
|
|---|
| 3691 | );
|
|---|
| 3692 | }
|
|---|
| 3693 |
|
|---|
| 3694 | /**
|
|---|
| 3695 | * @param {string} code source code
|
|---|
| 3696 | * @param {ParseOptions} options parsing options
|
|---|
| 3697 | * @returns {ProgramNode} parsed ast
|
|---|
| 3698 | */
|
|---|
| 3699 | static _parse(code, options) {
|
|---|
| 3700 | const type = options ? options.sourceType : "module";
|
|---|
| 3701 | /** @type {AcornOptions} */
|
|---|
| 3702 | const parserOptions = {
|
|---|
| 3703 | ...defaultParserOptions,
|
|---|
| 3704 | allowReturnOutsideFunction: type === "script",
|
|---|
| 3705 | ...options,
|
|---|
| 3706 | sourceType: type === "auto" ? "module" : type
|
|---|
| 3707 | };
|
|---|
| 3708 |
|
|---|
| 3709 | /** @type {AnyNode} */
|
|---|
| 3710 | let ast;
|
|---|
| 3711 | let error;
|
|---|
| 3712 | let threw = false;
|
|---|
| 3713 | try {
|
|---|
| 3714 | ast = /** @type {AnyNode} */ (parser.parse(code, parserOptions));
|
|---|
| 3715 | } catch (e) {
|
|---|
| 3716 | error = e;
|
|---|
| 3717 | threw = true;
|
|---|
| 3718 | }
|
|---|
| 3719 |
|
|---|
| 3720 | if (threw && type === "auto") {
|
|---|
| 3721 | parserOptions.sourceType = "script";
|
|---|
| 3722 | if (!("allowReturnOutsideFunction" in options)) {
|
|---|
| 3723 | parserOptions.allowReturnOutsideFunction = true;
|
|---|
| 3724 | }
|
|---|
| 3725 | if (Array.isArray(parserOptions.onComment)) {
|
|---|
| 3726 | parserOptions.onComment.length = 0;
|
|---|
| 3727 | }
|
|---|
| 3728 | try {
|
|---|
| 3729 | ast = /** @type {AnyNode} */ (parser.parse(code, parserOptions));
|
|---|
| 3730 | threw = false;
|
|---|
| 3731 | } catch (e) {
|
|---|
| 3732 | // we use the error from first parse try
|
|---|
| 3733 | // so nothing to do here
|
|---|
| 3734 | }
|
|---|
| 3735 | }
|
|---|
| 3736 |
|
|---|
| 3737 | if (threw) {
|
|---|
| 3738 | throw error;
|
|---|
| 3739 | }
|
|---|
| 3740 |
|
|---|
| 3741 | return /** @type {ProgramNode} */ (ast);
|
|---|
| 3742 | }
|
|---|
| 3743 | }
|
|---|
| 3744 |
|
|---|
| 3745 | module.exports = JavascriptParser;
|
|---|
| 3746 | module.exports.ALLOWED_MEMBER_TYPES_ALL = ALLOWED_MEMBER_TYPES_ALL;
|
|---|
| 3747 | module.exports.ALLOWED_MEMBER_TYPES_EXPRESSION =
|
|---|
| 3748 | ALLOWED_MEMBER_TYPES_EXPRESSION;
|
|---|
| 3749 | module.exports.ALLOWED_MEMBER_TYPES_CALL_EXPRESSION =
|
|---|
| 3750 | ALLOWED_MEMBER_TYPES_CALL_EXPRESSION;
|
|---|
