webpack/lib/ConstPlugin.js

38 lines
1.4 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var ConstDependency = require("./dependencies/ConstDependency");
var BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
var NullFactory = require("./NullFactory");
function ConstPlugin() {
}
module.exports = ConstPlugin;
ConstPlugin.prototype.apply = function(compiler) {
compiler.plugin("compilation", function(compilation, params) {
compilation.dependencyFactories.set(ConstDependency, new NullFactory());
compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
});
compiler.parser.plugin("statement if", function(statement) {
var param = this.evaluateExpression(statement.test);
if(param.isBoolean()) {
this.state.current.addDependency(new ConstDependency(param.bool + "", param.range));
return param.bool;
}
});
compiler.parser.plugin("evaluate Identifier __resourceQuery", function(expr) {
if(!this.state.module) return;
var res = new BasicEvaluatedExpression();
res.setString(this.state.module.splitQuery(this.state.module.resource)[1]);
res.setRange(expr.range);
return res;
});
compiler.parser.plugin("expression __resourceQuery", function(expr) {
if(!this.state.module) return;
this.state.current.addVariable("__resourceQuery", JSON.stringify(this.state.module.splitQuery(this.state.module.resource)[1]));
return true;
});
};