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274 lines
7.1 KiB
274 lines
7.1 KiB
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const AMDRequireItemDependency = require("./AMDRequireItemDependency");
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const AMDRequireArrayDependency = require("./AMDRequireArrayDependency");
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const AMDRequireContextDependency = require("./AMDRequireContextDependency");
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const AMDRequireDependenciesBlock = require("./AMDRequireDependenciesBlock");
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const UnsupportedDependency = require("./UnsupportedDependency");
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const LocalModuleDependency = require("./LocalModuleDependency");
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const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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const LocalModulesHelpers = require("./LocalModulesHelpers");
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const ConstDependency = require("./ConstDependency");
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const getFunctionExpression = require("./getFunctionExpression");
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const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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class AMDRequireDependenciesBlockParserPlugin {
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constructor(options) {
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this.options = options;
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}
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processFunctionArgument(parser, expression) {
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let bindThis = true;
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const fnData = getFunctionExpression(expression);
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if (fnData) {
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parser.inScope(
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fnData.fn.params.filter(i => {
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return !["require", "module", "exports"].includes(i.name);
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}),
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() => {
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if (fnData.fn.body.type === "BlockStatement") {
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parser.walkStatement(fnData.fn.body);
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} else {
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parser.walkExpression(fnData.fn.body);
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}
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}
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);
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parser.walkExpressions(fnData.expressions);
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if (fnData.needThis === false) {
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bindThis = false;
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}
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} else {
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parser.walkExpression(expression);
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}
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return bindThis;
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}
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apply(parser) {
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parser.hooks.call
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.for("require")
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.tap(
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"AMDRequireDependenciesBlockParserPlugin",
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this.processCallRequire.bind(this, parser)
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);
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}
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processArray(parser, expr, param) {
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if (param.isArray()) {
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for (const p of param.items) {
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const result = this.processItem(parser, expr, p);
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if (result === undefined) {
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this.processContext(parser, expr, p);
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}
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}
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return true;
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} else if (param.isConstArray()) {
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const deps = [];
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for (const request of param.array) {
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let dep, localModule;
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if (request === "require") {
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dep = "__webpack_require__";
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} else if (["exports", "module"].includes(request)) {
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dep = request;
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} else if (
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(localModule = LocalModulesHelpers.getLocalModule(
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parser.state,
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request
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))
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) {
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dep = new LocalModuleDependency(localModule, undefined, false);
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dep.loc = expr.loc;
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parser.state.current.addDependency(dep);
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} else {
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dep = this.newRequireItemDependency(request);
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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}
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deps.push(dep);
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}
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const dep = this.newRequireArrayDependency(deps, param.range);
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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}
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processItem(parser, expr, param) {
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if (param.isConditional()) {
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for (const p of param.options) {
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const result = this.processItem(parser, expr, p);
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if (result === undefined) {
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this.processContext(parser, expr, p);
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}
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}
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return true;
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} else if (param.isString()) {
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let dep, localModule;
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if (param.string === "require") {
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dep = new ConstDependency("__webpack_require__", param.string);
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} else if (param.string === "module") {
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dep = new ConstDependency(
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parser.state.module.buildInfo.moduleArgument,
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param.range
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);
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} else if (param.string === "exports") {
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dep = new ConstDependency(
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parser.state.module.buildInfo.exportsArgument,
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param.range
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);
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} else if (
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(localModule = LocalModulesHelpers.getLocalModule(
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parser.state,
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param.string
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))
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) {
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dep = new LocalModuleDependency(localModule, param.range, false);
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} else {
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dep = this.newRequireItemDependency(param.string, param.range);
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}
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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}
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processContext(parser, expr, param) {
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const dep = ContextDependencyHelpers.create(
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AMDRequireContextDependency,
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param.range,
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param,
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expr,
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this.options,
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{},
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parser
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);
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if (!dep) return;
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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processArrayForRequestString(param) {
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if (param.isArray()) {
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const result = param.items.map(item =>
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this.processItemForRequestString(item)
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);
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if (result.every(Boolean)) return result.join(" ");
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} else if (param.isConstArray()) {
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return param.array.join(" ");
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}
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}
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processItemForRequestString(param) {
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if (param.isConditional()) {
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const result = param.options.map(item =>
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this.processItemForRequestString(item)
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);
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if (result.every(Boolean)) return result.join("|");
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} else if (param.isString()) {
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return param.string;
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}
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}
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processCallRequire(parser, expr) {
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let param;
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let dep;
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let result;
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const old = parser.state.current;
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if (expr.arguments.length >= 1) {
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param = parser.evaluateExpression(expr.arguments[0]);
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dep = this.newRequireDependenciesBlock(
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expr,
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param.range,
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expr.arguments.length > 1 ? expr.arguments[1].range : null,
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expr.arguments.length > 2 ? expr.arguments[2].range : null,
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parser.state.module,
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expr.loc,
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this.processArrayForRequestString(param)
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);
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parser.state.current = dep;
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}
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if (expr.arguments.length === 1) {
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parser.inScope([], () => {
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result = this.processArray(parser, expr, param);
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});
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parser.state.current = old;
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if (!result) return;
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parser.state.current.addBlock(dep);
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return true;
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}
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if (expr.arguments.length === 2 || expr.arguments.length === 3) {
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try {
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parser.inScope([], () => {
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result = this.processArray(parser, expr, param);
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});
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if (!result) {
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dep = new UnsupportedDependency("unsupported", expr.range);
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old.addDependency(dep);
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if (parser.state.module) {
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parser.state.module.errors.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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"Cannot statically analyse 'require(…, …)' in line " +
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expr.loc.start.line,
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expr.loc
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)
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);
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}
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dep = null;
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return true;
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}
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dep.functionBindThis = this.processFunctionArgument(
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parser,
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expr.arguments[1]
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);
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if (expr.arguments.length === 3) {
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dep.errorCallbackBindThis = this.processFunctionArgument(
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parser,
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expr.arguments[2]
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);
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}
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} finally {
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parser.state.current = old;
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if (dep) parser.state.current.addBlock(dep);
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}
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return true;
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}
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}
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newRequireDependenciesBlock(
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expr,
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arrayRange,
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functionRange,
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errorCallbackRange,
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module,
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loc,
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request
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) {
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return new AMDRequireDependenciesBlock(
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expr,
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arrayRange,
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functionRange,
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errorCallbackRange,
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module,
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loc,
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request
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);
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}
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newRequireItemDependency(request, range) {
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return new AMDRequireItemDependency(request, range);
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}
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newRequireArrayDependency(depsArray, range) {
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return new AMDRequireArrayDependency(depsArray, range);
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}
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}
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module.exports = AMDRequireDependenciesBlockParserPlugin;
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