mirror of https://github.com/webpack/webpack.git
67 lines
2.4 KiB
JavaScript
67 lines
2.4 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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"use strict";
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const ConstDependency = require("./dependencies/ConstDependency");
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const NullFactory = require("./NullFactory");
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const ParserHelpers = require("./ParserHelpers");
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const getQuery = (request) => {
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const i = request.indexOf("?");
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return request.indexOf("?") < 0 ? "" : request.substr(i);
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};
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class ConstPlugin {
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apply(compiler) {
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compiler.hooks.compilation.tap("ConstPlugin", (compilation, {
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normalModuleFactory
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}) => {
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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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const handler = parser => {
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parser.hooks.statementIf.tap("ConstPlugin", statement => {
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const param = parser.evaluateExpression(statement.test);
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const bool = param.asBool();
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if(typeof bool === "boolean") {
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if(statement.test.type !== "Literal") {
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const dep = new ConstDependency(`${bool}`, param.range);
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dep.loc = statement.loc;
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parser.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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parser.hooks.expressionConditionalOperator.tap("ConstPlugin", expression => {
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const param = parser.evaluateExpression(expression.test);
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const bool = param.asBool();
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if(typeof bool === "boolean") {
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if(expression.test.type !== "Literal") {
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const dep = new ConstDependency(` ${bool}`, param.range);
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dep.loc = expression.loc;
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parser.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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parser.hooks.evaluateIdentifier.for("__resourceQuery").tap("ConstPlugin", expr => {
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if(!parser.state.module) return;
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return ParserHelpers.evaluateToString(getQuery(parser.state.module.resource))(expr);
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});
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parser.hooks.expression.for("__resourceQuery").tap("ConstPlugin", () => {
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if(!parser.state.module) return;
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parser.state.current.addVariable("__resourceQuery", JSON.stringify(getQuery(parser.state.module.resource)));
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return true;
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});
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};
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normalModuleFactory.hooks.parser.for("javascript/auto").tap("ConstPlugin", handler);
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normalModuleFactory.hooks.parser.for("javascript/dynamic").tap("ConstPlugin", handler);
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normalModuleFactory.hooks.parser.for("javascript/esm").tap("ConstPlugin", handler);
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});
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}
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}
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module.exports = ConstPlugin;
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