mirror of https://github.com/webpack/webpack.git
60 lines
1.9 KiB
JavaScript
60 lines
1.9 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("./dependencies/ConstDependency");
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var BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
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var NullFactory = require("./NullFactory");
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function getQuery(request) {
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var i = request.indexOf("?");
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return i < 0 ? "" : request.substr(i);
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}
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function ConstPlugin() {}
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module.exports = ConstPlugin;
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ConstPlugin.prototype.apply = function(compiler) {
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compiler.plugin("compilation", function(compilation) {
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compilation.dependencyFactories.set(ConstDependency, new NullFactory());
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compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
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});
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compiler.parser.plugin("statement if", function(statement) {
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var param = this.evaluateExpression(statement.test);
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var bool = param.asBool();
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if(typeof bool === "boolean") {
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if(statement.test.type !== "Literal") {
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var dep = new ConstDependency(bool + "", param.range);
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dep.loc = statement.loc;
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this.state.current.addDependency(dep);
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}
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return bool;
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}
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});
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compiler.parser.plugin("expression ?:", function(expression) {
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var param = this.evaluateExpression(expression.test);
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var bool = param.asBool();
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if(typeof bool === "boolean") {
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if(expression.test.type !== "Literal") {
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var dep = new ConstDependency(" " + bool + "", param.range);
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dep.loc = expression.loc;
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this.state.current.addDependency(dep);
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}
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return bool;
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}
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});
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compiler.parser.plugin("evaluate Identifier __resourceQuery", function(expr) {
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if(!this.state.module) return;
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var res = new BasicEvaluatedExpression();
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res.setString(getQuery(this.state.module.resource));
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res.setRange(expr.range);
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return res;
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});
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compiler.parser.plugin("expression __resourceQuery", function() {
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if(!this.state.module) return;
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this.state.current.addVariable("__resourceQuery", JSON.stringify(getQuery(this.state.module.resource)));
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return true;
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});
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};
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