mirror of https://github.com/webpack/webpack.git
92 lines
3.4 KiB
JavaScript
92 lines
3.4 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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var ConstDependency = require("./ConstDependency");
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var CommonJsRequireDependency = require("./CommonJsRequireDependency");
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var CommonJsRequireContextDependency = require("./CommonJsRequireContextDependency");
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var RequireHeaderDependency = require("./RequireHeaderDependency");
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var LocalModuleDependency = require("./LocalModuleDependency");
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var ContextDependencyHelpers = require("./ContextDependencyHelpers");
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var LocalModulesHelpers = require("./LocalModulesHelpers");
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function CommonJsRequireDependencyParserPlugin(options) {
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this.options = options;
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}
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module.exports = CommonJsRequireDependencyParserPlugin;
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CommonJsRequireDependencyParserPlugin.prototype.apply = function(parser) {
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var options = this.options;
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parser.plugin("expression require.cache", function(expr) {
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var dep = new ConstDependency("__webpack_require__.c", expr.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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return true;
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});
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parser.plugin("expression require", function(expr) {
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var dep = new CommonJsRequireContextDependency(options.unknownContextRequest, options.unknownContextRecursive, options.unknownContextRegExp, expr.range);
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dep.critical = options.unknownContextCritical && "require function is used in a way in which dependencies cannot be statically extracted";
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dep.loc = expr.loc;
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dep.optional = !!this.scope.inTry;
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this.state.current.addDependency(dep);
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return true;
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});
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parser.plugin("call require", function(expr) {
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if(expr.arguments.length !== 1) return;
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var localModule, dep;
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var param = this.evaluateExpression(expr.arguments[0]);
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if(param.isConditional()) {
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var isExpression = false;
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var prevLength = this.state.current.dependencies.length;
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dep = new RequireHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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param.options.forEach(function(param) {
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var result = this.applyPluginsBailResult("call require:commonjs:item", expr, param);
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if(result === undefined) {
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isExpression = true;
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}
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}, this);
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if(isExpression) {
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this.state.current.dependencies.length = prevLength;
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} else {
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return true;
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}
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}
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if(param.isString() && (localModule = LocalModulesHelpers.getLocalModule(this.state, param.string))) {
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dep = new LocalModuleDependency(localModule, expr.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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return true;
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} else {
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var result = this.applyPluginsBailResult("call require:commonjs:item", expr, param);
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if(result === undefined) {
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this.applyPluginsBailResult("call require:commonjs:context", expr, param);
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} else {
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dep = new RequireHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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}
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return true;
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}
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});
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parser.plugin("call require:commonjs:item", function(expr, param) {
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if(param.isString()) {
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var dep = new CommonJsRequireDependency(param.string, param.range);
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dep.loc = expr.loc;
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dep.optional = !!this.scope.inTry;
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this.state.current.addDependency(dep);
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return true;
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}
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});
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parser.plugin("call require:commonjs:context", function(expr, param) {
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var dep = ContextDependencyHelpers.create(CommonJsRequireContextDependency, expr.range, param, expr, options);
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if(!dep) return;
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dep.loc = expr.loc;
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dep.optional = !!this.scope.inTry;
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this.state.current.addDependency(dep);
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return true;
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});
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};
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