mirror of https://github.com/webpack/webpack.git
215 lines
7.3 KiB
JavaScript
215 lines
7.3 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 AbstractPlugin = require("../AbstractPlugin");
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var AMDRequireItemDependency = require("./AMDRequireItemDependency");
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var AMDRequireContextDependency = require("./AMDRequireContextDependency");
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var ConstDependency = require("./ConstDependency");
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var AMDDefineDependency = require("./AMDDefineDependency");
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var AMDRequireArrayDependency = require("./AMDRequireArrayDependency");
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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 isBoundFunctionExpression(expr) {
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if(expr.type !== "CallExpression") return false;
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if(expr.callee.type !== "MemberExpression") return false;
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if(expr.callee.computed) return false;
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if(expr.callee.object.type !== "FunctionExpression") return false;
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if(expr.callee.property.type !== "Identifier") return false;
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if(expr.callee.property.name !== "bind") return false;
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return true;
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}
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module.exports = AbstractPlugin.create({
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"call define": function(expr) {
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var array, fn, obj, namedModule;
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switch(expr.arguments.length) {
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case 1:
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if(expr.arguments[0].type == "FunctionExpression" || isBoundFunctionExpression(expr.arguments[0])) {
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// define(f() {...})
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fn = expr.arguments[0];
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} else if(expr.arguments[0].type === "ObjectExpression") {
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// define({...})
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obj = expr.arguments[0];
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} else {
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// define(expr)
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// unclear if function or object
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obj = fn = expr.arguments[0];
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}
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break;
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case 2:
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if(expr.arguments[0].type === "Literal") {
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namedModule = expr.arguments[0].value;
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// define("...", ...)
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if(expr.arguments[1].type === "FunctionExpression" || isBoundFunctionExpression(expr.arguments[0])) {
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// define("...", f() {...})
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fn = expr.arguments[1];
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} else if(expr.arguments[1].type === "ObjectExpression") {
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// define("...", {...})
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obj = expr.arguments[1];
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} else {
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// define("...", expr)
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// unclear if function or object
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obj = fn = expr.arguments[1];
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}
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} else {
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// define([...], f() {})
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array = expr.arguments[0];
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fn = expr.arguments[1];
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}
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break;
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case 3:
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// define("...", [...], f() {...})
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namedModule = expr.arguments[0].value;
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array = expr.arguments[1];
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fn = expr.arguments[2];
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break;
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default: return;
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}
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var fnParams = null;
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var fnParamsOffset = 0;
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if(fn) {
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if(fn.type === "FunctionExpression") fnParams = fn.params;
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else if(isBoundFunctionExpression(fn)) {
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fnParams = fn.callee.object.params;
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fnParamsOffset = fn.arguments.length - 1;
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if(fnParamsOffset < 0) fnParamsOffset = 0;
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}
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}
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var fnRenames = Object.create(this.scope.renames);
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if(array) {
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var identifiers = {};
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var param = this.evaluateExpression(array);
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var result = this.applyPluginsBailResult("call define:amd:array", expr, param, identifiers);
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if(!result) return;
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if(fnParams) fnParams = fnParams.slice(fnParamsOffset).filter(function(param, idx) {
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if(identifiers[idx]) {
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fnRenames["$"+param.name] = identifiers[idx];
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return false;
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}
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return true;
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});
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} else {
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var identifiers = ["require", "exports", "module"];
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if(fnParams) fnParams = fnParams.slice(fnParamsOffset).filter(function(param, idx) {
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if(identifiers[idx]) {
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fnRenames["$"+param.name] = identifiers[idx];
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return false;
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}
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return true;
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});
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}
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if(fn && fn.type === "FunctionExpression") {
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var inTry = this.scope.inTry;
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this.inScope(fnParams, function() {
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this.scope.renames = fnRenames;
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this.scope.inTry = inTry;
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if(fn.body.type === "BlockStatement")
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this.walkStatement(fn.body);
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else
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this.walkExpression(fn.body);
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}.bind(this));
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} else if(fn && isBoundFunctionExpression(fn)) {
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var inTry = this.scope.inTry;
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this.inScope(fn.callee.object.params.filter(function(i) {
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return ["require", "module", "exports"].indexOf(i.name) < 0;
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}), function() {
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this.scope.renames = fnRenames;
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this.scope.inTry = inTry;
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if(fn.callee.object.body.type === "BlockStatement")
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this.walkStatement(fn.callee.object.body);
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else
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this.walkExpression(fn.callee.object.body);
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}.bind(this));
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if(fn.arguments)
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this.walkExpressions(fn.arguments);
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} else if(fn || obj) {
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this.walkExpression(fn || obj);
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}
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var dep = new AMDDefineDependency(expr.range, array ? array.range : null, fn ? fn.range : null, obj ? obj.range : null);
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dep.loc = expr.loc;
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if(namedModule) {
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dep.localModule = LocalModulesHelpers.addLocalModule(this.state, namedModule);
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}
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this.state.current.addDependency(dep);
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return true;
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},
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"call define:amd:array": function(expr, param, identifiers) {
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if(param.isArray()) {
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param.items.forEach(function(param, idx) {
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if(param.isString() && ["require", "module", "exports"].indexOf(param.string) >= 0)
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identifiers[idx] = param.string === "require" ? "__webpack_require__" : param.string;
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var result = this.applyPluginsBailResult("call define:amd:item", expr, param);
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if(result === undefined) {
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this.applyPluginsBailResult("call define:amd:context", expr, param);
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}
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}, this);
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return true;
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} else if(param.isConstArray()) {
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var deps = [];
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param.array.forEach(function(request, idx) {
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var dep, localModule;
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if(request === "require") {
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identifiers[idx] = request;
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dep = "__webpack_require__";
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} else if(["exports", "module"].indexOf(request) >= 0) {
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identifiers[idx] = request;
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dep = request;
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} else if(localModule = LocalModulesHelpers.getLocalModule(this.state, request)) {
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dep = new LocalModuleDependency(localModule);
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dep.loc = expr.loc;
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this.state.current.addDependency(dep);
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} else {
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dep = new AMDRequireItemDependency(request);
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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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}
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deps.push(dep);
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}, this);
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var dep = new AMDRequireArrayDependency(deps, 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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"call define:amd:item": function(expr, param) {
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if(param.isConditional()) {
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param.options.forEach(function(param) {
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var result = this.applyPluginsBailResult("call define:amd:item", expr, param);
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if(result === undefined) {
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this.applyPluginsBailResult("call define:amd:context", expr, param);
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}
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}, this);
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return true;
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} else if(param.isString()) {
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var dep, localModule;
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if(param.string === "require") {
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dep = new ConstDependency("__webpack_require__", param.range);
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} else if(["require", "exports", "module"].indexOf(param.string) >= 0) {
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dep = new ConstDependency(param.string, param.range);
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} else if(localModule = LocalModulesHelpers.getLocalModule(this.state, param.string)) {
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dep = new LocalModuleDependency(localModule, param.range);
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} else {
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dep = new AMDRequireItemDependency(param.string, param.range);
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}
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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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"call define:amd:context": function(expr, param) {
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var dep = ContextDependencyHelpers.create(AMDRequireContextDependency, param.range, param, expr);
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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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