mirror of https://github.com/webpack/webpack.git
75 lines
2.3 KiB
JavaScript
75 lines
2.3 KiB
JavaScript
/*
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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 RequireResolveDependency = require("./RequireResolveDependency");
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const RequireResolveContextDependency = require("./RequireResolveContextDependency");
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const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
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const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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class RequireResolveDependencyParserPlugin {
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constructor(options) {
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this.options = options;
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}
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apply(parser) {
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const options = this.options;
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const process = (expr, weak) => {
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if(expr.arguments.length !== 1) return;
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const param = parser.evaluateExpression(expr.arguments[0]);
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if(param.isConditional()) {
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param.options.forEach((option) => {
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const result = processItem(expr, option, weak);
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if(result === undefined) {
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processContext(expr, option, weak);
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}
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});
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const dep = new RequireResolveHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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parser.state.current.addDependency(dep);
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return true;
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} else {
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const result = processItem(expr, param, weak);
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if(result === undefined) {
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processContext(expr, param, weak);
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}
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const dep = new RequireResolveHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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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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const processItem = (expr, param, weak) => {
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if(param.isString()) {
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const dep = new RequireResolveDependency(param.string, param.range);
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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dep.weak = weak;
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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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const processContext = (expr, param, weak) => {
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const dep = ContextDependencyHelpers.create(RequireResolveContextDependency, param.range, param, expr, options, {
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mode: weak ? "weak" : "sync"
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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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parser.hooks.call.for("require.resolve").tap("RequireResolveDependencyParserPlugin", (expr) => {
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return process(expr, false);
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});
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parser.hooks.call.for("require.resolveWeak").tap("RequireResolveDependencyParserPlugin", (expr) => {
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return process(expr, true);
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});
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}
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}
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module.exports = RequireResolveDependencyParserPlugin;
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