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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const CommonJsRequireDependency = require("./CommonJsRequireDependency");
const CommonJsRequireContextDependency = require("./CommonJsRequireContextDependency");
const RequireHeaderDependency = require("./RequireHeaderDependency");
const LocalModuleDependency = require("./LocalModuleDependency");
const ContextDependencyHelpers = require("./ContextDependencyHelpers");
const LocalModulesHelpers = require("./LocalModulesHelpers");
const ParserHelpers = require("../ParserHelpers");
class CommonJsRequireDependencyParserPlugin {
constructor(options) {
this.options = options;
}
apply(parser) {
const options = this.options;
parser.plugin("expression require.cache", ParserHelpers.toConstantDependency("__webpack_require__.c"));
parser.plugin("expression require", (expr) => {
const dep = new CommonJsRequireContextDependency(options.unknownContextRequest, options.unknownContextRecursive, options.unknownContextRegExp, expr.range);
dep.critical = options.unknownContextCritical && "require function is used in a way in which dependencies cannot be statically extracted";
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
parser.state.current.addDependency(dep);
return true;
});
parser.plugin("call require", (expr) => {
if(expr.arguments.length !== 1) return;
let localModule;
const param = parser.evaluateExpression(expr.arguments[0]);
if(param.isConditional()) {
let isExpression = false;
const prevLength = parser.state.current.dependencies.length;
const dep = new RequireHeaderDependency(expr.callee.range);
dep.loc = expr.loc;
parser.state.current.addDependency(dep);
param.options.forEach(function(param) {
const result = parser.applyPluginsBailResult("call require:commonjs:item", expr, param);
if(result === undefined) {
isExpression = true;
}
});
if(isExpression) {
parser.state.current.dependencies.length = prevLength;
} else {
return true;
}
}
if(param.isString() && (localModule = LocalModulesHelpers.getLocalModule(parser.state, param.string))) {
const dep = new LocalModuleDependency(localModule, expr.range);
dep.loc = expr.loc;
parser.state.current.addDependency(dep);
return true;
} else {
const result = parser.applyPluginsBailResult("call require:commonjs:item", expr, param);
if(result === undefined) {
parser.applyPluginsBailResult("call require:commonjs:context", expr, param);
} else {
const dep = new RequireHeaderDependency(expr.callee.range);
dep.loc = expr.loc;
parser.state.current.addDependency(dep);
}
return true;
}
});
parser.plugin("call require:commonjs:item", (expr, param) => {
if(param.isString()) {
const dep = new CommonJsRequireDependency(param.string, param.range);
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
parser.state.current.addDependency(dep);
return true;
}
});
parser.plugin("call require:commonjs:context", (expr, param) => {
const dep = ContextDependencyHelpers.create(CommonJsRequireContextDependency, expr.range, param, expr, options);
if(!dep) return;
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
parser.state.current.addDependency(dep);
return true;
});
}
}
module.exports = CommonJsRequireDependencyParserPlugin;
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