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Просмотр файла: HarmonyImportDependencyParserPlugin.js
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const HotModuleReplacementPlugin = require("../HotModuleReplacementPlugin");
const { getImportAttributes } = require("../javascript/JavascriptParser");
const InnerGraph = require("../optimize/InnerGraph");
const ConstDependency = require("./ConstDependency");
const HarmonyAcceptDependency = require("./HarmonyAcceptDependency");
const HarmonyAcceptImportDependency = require("./HarmonyAcceptImportDependency");
const HarmonyEvaluatedImportSpecifierDependency = require("./HarmonyEvaluatedImportSpecifierDependency");
const HarmonyExports = require("./HarmonyExports");
const { ExportPresenceModes } = require("./HarmonyImportDependency");
const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");
/** @typedef {import("estree").Identifier} Identifier */
/** @typedef {import("estree").Literal} Literal */
/** @typedef {import("estree").MemberExpression} MemberExpression */
/** @typedef {import("estree").ObjectExpression} ObjectExpression */
/** @typedef {import("estree").Property} Property */
/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
/** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
/** @typedef {import("../javascript/JavascriptParser").DestructuringAssignmentProperty} DestructuringAssignmentProperty */
/** @typedef {import("../javascript/JavascriptParser").ExportAllDeclaration} ExportAllDeclaration */
/** @typedef {import("../javascript/JavascriptParser").ExportNamedDeclaration} ExportNamedDeclaration */
/** @typedef {import("../javascript/JavascriptParser").ImportAttributes} ImportAttributes */
/** @typedef {import("../javascript/JavascriptParser").ImportDeclaration} ImportDeclaration */
/** @typedef {import("../javascript/JavascriptParser").ImportExpression} ImportExpression */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../optimize/InnerGraph").InnerGraph} InnerGraph */
/** @typedef {import("../optimize/InnerGraph").TopLevelSymbol} TopLevelSymbol */
/** @typedef {import("./HarmonyImportDependency")} HarmonyImportDependency */
const harmonySpecifierTag = Symbol("harmony import");
/**
* @typedef {object} HarmonySettings
* @property {string[]} ids
* @property {string} source
* @property {number} sourceOrder
* @property {string} name
* @property {boolean} await
* @property {Record<string, any> | undefined} assertions
*/
module.exports = class HarmonyImportDependencyParserPlugin {
/**
* @param {JavascriptParserOptions} options options
*/
constructor(options) {
this.exportPresenceMode =
options.importExportsPresence !== undefined
? ExportPresenceModes.fromUserOption(options.importExportsPresence)
: options.exportsPresence !== undefined
? ExportPresenceModes.fromUserOption(options.exportsPresence)
: options.strictExportPresence
? ExportPresenceModes.ERROR
: ExportPresenceModes.AUTO;
this.strictThisContextOnImports = options.strictThisContextOnImports;
}
/**
* @param {JavascriptParser} parser the parser
* @returns {void}
*/
apply(parser) {
const { exportPresenceMode } = this;
/**
* @param {string[]} members members
* @param {boolean[]} membersOptionals members Optionals
* @returns {string[]} a non optional part
*/
function getNonOptionalPart(members, membersOptionals) {
let i = 0;
while (i < members.length && membersOptionals[i] === false) i++;
return i !== members.length ? members.slice(0, i) : members;
}
/**
* @param {TODO} node member expression
* @param {number} count count
* @returns {TODO} member expression
*/
function getNonOptionalMemberChain(node, count) {
while (count--) node = node.object;
return node;
}
parser.hooks.isPure
.for("Identifier")
.tap("HarmonyImportDependencyParserPlugin", expression => {
const expr = /** @type {Identifier} */ (expression);
if (
parser.isVariableDefined(expr.name) ||
parser.getTagData(expr.name, harmonySpecifierTag)
) {
return true;
}
});
parser.hooks.import.tap(
"HarmonyImportDependencyParserPlugin",
(statement, source) => {
parser.state.lastHarmonyImportOrder =
(parser.state.lastHarmonyImportOrder || 0) + 1;
const clearDep = new ConstDependency(
parser.isAsiPosition(/** @type {Range} */ (statement.range)[0])
? ";"
: "",
/** @type {Range} */ (statement.range)
);
clearDep.loc = /** @type {DependencyLocation} */ (statement.loc);
parser.state.module.addPresentationalDependency(clearDep);
parser.unsetAsiPosition(/** @type {Range} */ (statement.range)[1]);
const attributes = getImportAttributes(statement);
const sideEffectDep = new HarmonyImportSideEffectDependency(
/** @type {string} */ (source),
parser.state.lastHarmonyImportOrder,
attributes
);
sideEffectDep.loc = /** @type {DependencyLocation} */ (statement.loc);
parser.state.module.addDependency(sideEffectDep);
return true;
}
);
parser.hooks.importSpecifier.tap(
"HarmonyImportDependencyParserPlugin",
(statement, source, id, name) => {
const ids = id === null ? [] : [id];
parser.tagVariable(name, harmonySpecifierTag, {
name,
source,
ids,
sourceOrder: parser.state.lastHarmonyImportOrder,
assertions: getImportAttributes(statement)
});
return true;
}
);
parser.hooks.binaryExpression.tap(
"HarmonyImportDependencyParserPlugin",
expression => {
if (expression.operator !== "in") return;
const leftPartEvaluated = parser.evaluateExpression(expression.left);
if (leftPartEvaluated.couldHaveSideEffects()) return;
const leftPart = leftPartEvaluated.asString();
if (!leftPart) return;
const rightPart = parser.evaluateExpression(expression.right);
if (!rightPart.isIdentifier()) return;
const rootInfo = rightPart.rootInfo;
if (
typeof rootInfo === "string" ||
!rootInfo ||
!rootInfo.tagInfo ||
rootInfo.tagInfo.tag !== harmonySpecifierTag
)
return;
const settings = rootInfo.tagInfo.data;
const members =
/** @type {(() => string[])} */
(rightPart.getMembers)();
const dep = new HarmonyEvaluatedImportSpecifierDependency(
settings.source,
settings.sourceOrder,
settings.ids.concat(members).concat([leftPart]),
settings.name,
/** @type {Range} */ (expression.range),
settings.assertions,
"in"
);
dep.directImport = members.length === 0;
dep.asiSafe = !parser.isAsiPosition(
/** @type {Range} */ (expression.range)[0]
);
dep.loc = /** @type {DependencyLocation} */ (expression.loc);
parser.state.module.addDependency(dep);
InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
return true;
}
);
parser.hooks.expression
.for(harmonySpecifierTag)
.tap("HarmonyImportDependencyParserPlugin", expr => {
const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
const dep = new HarmonyImportSpecifierDependency(
settings.source,
settings.sourceOrder,
settings.ids,
settings.name,
/** @type {Range} */ (expr.range),
exportPresenceMode,
settings.assertions,
[]
);
dep.referencedPropertiesInDestructuring =
parser.destructuringAssignmentPropertiesFor(expr);
dep.shorthand = parser.scope.inShorthand;
dep.directImport = true;
dep.asiSafe = !parser.isAsiPosition(
/** @type {Range} */ (expr.range)[0]
);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
dep.call = parser.scope.inTaggedTemplateTag;
parser.state.module.addDependency(dep);
InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
return true;
});
parser.hooks.expressionMemberChain
.for(harmonySpecifierTag)
.tap(
"HarmonyImportDependencyParserPlugin",
(expression, members, membersOptionals, memberRanges) => {
const settings = /** @type {HarmonySettings} */ (
parser.currentTagData
);
const nonOptionalMembers = getNonOptionalPart(
members,
membersOptionals
);
/** @type {Range[]} */
const ranges = memberRanges.slice(
0,
memberRanges.length - (members.length - nonOptionalMembers.length)
);
const expr =
nonOptionalMembers !== members
? getNonOptionalMemberChain(
expression,
members.length - nonOptionalMembers.length
)
: expression;
const ids = settings.ids.concat(nonOptionalMembers);
const dep = new HarmonyImportSpecifierDependency(
settings.source,
settings.sourceOrder,
ids,
settings.name,
/** @type {Range} */ (expr.range),
exportPresenceMode,
settings.assertions,
ranges
);
dep.referencedPropertiesInDestructuring =
parser.destructuringAssignmentPropertiesFor(expr);
dep.asiSafe = !parser.isAsiPosition(
/** @type {Range} */ (expr.range)[0]
);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
return true;
}
);
parser.hooks.callMemberChain
.for(harmonySpecifierTag)
.tap(
"HarmonyImportDependencyParserPlugin",
(expression, members, membersOptionals, memberRanges) => {
const { arguments: args, callee } = expression;
const settings = /** @type {HarmonySettings} */ (
parser.currentTagData
);
const nonOptionalMembers = getNonOptionalPart(
members,
membersOptionals
);
/** @type {Range[]} */
const ranges = memberRanges.slice(
0,
memberRanges.length - (members.length - nonOptionalMembers.length)
);
const expr =
nonOptionalMembers !== members
? getNonOptionalMemberChain(
callee,
members.length - nonOptionalMembers.length
)
: callee;
const ids = settings.ids.concat(nonOptionalMembers);
const dep = new HarmonyImportSpecifierDependency(
settings.source,
settings.sourceOrder,
ids,
settings.name,
/** @type {Range} */ (expr.range),
exportPresenceMode,
settings.assertions,
ranges
);
dep.directImport = members.length === 0;
dep.call = true;
dep.asiSafe = !parser.isAsiPosition(
/** @type {Range} */ (expr.range)[0]
);
// only in case when we strictly follow the spec we need a special case here
dep.namespaceObjectAsContext =
members.length > 0 &&
/** @type {boolean} */ (this.strictThisContextOnImports);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
if (args) parser.walkExpressions(args);
InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
return true;
}
);
const { hotAcceptCallback, hotAcceptWithoutCallback } =
HotModuleReplacementPlugin.getParserHooks(parser);
hotAcceptCallback.tap(
"HarmonyImportDependencyParserPlugin",
(expr, requests) => {
if (!HarmonyExports.isEnabled(parser.state)) {
// This is not a harmony module, skip it
return;
}
const dependencies = requests.map(request => {
const dep = new HarmonyAcceptImportDependency(request);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
return dep;
});
if (dependencies.length > 0) {
const dep = new HarmonyAcceptDependency(
/** @type {Range} */
(expr.range),
dependencies,
true
);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
}
}
);
hotAcceptWithoutCallback.tap(
"HarmonyImportDependencyParserPlugin",
(expr, requests) => {
if (!HarmonyExports.isEnabled(parser.state)) {
// This is not a harmony module, skip it
return;
}
const dependencies = requests.map(request => {
const dep = new HarmonyAcceptImportDependency(request);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
return dep;
});
if (dependencies.length > 0) {
const dep = new HarmonyAcceptDependency(
/** @type {Range} */
(expr.range),
dependencies,
false
);
dep.loc = /** @type {DependencyLocation} */ (expr.loc);
parser.state.module.addDependency(dep);
}
}
);
}
};
module.exports.harmonySpecifierTag = harmonySpecifierTag;
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