chushihua

node_modules/webpack/lib/dependencies/AMDRequireDependenciesBlockParserPlugin.js

@@ -0,0 +1,177 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const AMDRequireItemDependency = require("./AMDRequireItemDependency");
+const AMDRequireArrayDependency = require("./AMDRequireArrayDependency");
+const AMDRequireContextDependency = require("./AMDRequireContextDependency");
+const AMDRequireDependenciesBlock = require("./AMDRequireDependenciesBlock");
+const UnsupportedDependency = require("./UnsupportedDependency");
+const LocalModuleDependency = require("./LocalModuleDependency");
+const ContextDependencyHelpers = require("./ContextDependencyHelpers");
+const LocalModulesHelpers = require("./LocalModulesHelpers");
+const ConstDependency = require("./ConstDependency");
+const getFunctionExpression = require("./getFunctionExpression");
+const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
+
+class AMDRequireDependenciesBlockParserPlugin {
+	constructor(options) {
+		this.options = options;
+	}
+
+	processFunctionArgument(parser, expression) {
+		let bindThis = true;
+		const fnData = getFunctionExpression(expression);
+		if(fnData) {
+			parser.inScope(fnData.fn.params.filter((i) => {
+				return ["require", "module", "exports"].indexOf(i.name) < 0;
+			}), () => {
+				if(fnData.fn.body.type === "BlockStatement")
+					parser.walkStatement(fnData.fn.body);
+				else
+					parser.walkExpression(fnData.fn.body);
+			});
+			parser.walkExpressions(fnData.expressions);
+			if(fnData.needThis === false) {
+				bindThis = false;
+			}
+		} else {
+			parser.walkExpression(expression);
+		}
+		return bindThis;
+	}
+
+	apply(parser) {
+		const options = this.options;
+		parser.plugin("call require", (expr) => {
+			let param;
+			let dep;
+			let result;
+
+			const old = parser.state.current;
+
+			if(expr.arguments.length >= 1) {
+				param = parser.evaluateExpression(expr.arguments[0]);
+				dep = new AMDRequireDependenciesBlock(
+					expr,
+					param.range,
+					(expr.arguments.length > 1) ? expr.arguments[1].range : null,
+					(expr.arguments.length > 2) ? expr.arguments[2].range : null,
+					parser.state.module,
+					expr.loc
+				);
+				parser.state.current = dep;
+			}
+
+			if(expr.arguments.length === 1) {
+				parser.inScope([], () => {
+					result = parser.applyPluginsBailResult("call require:amd:array", expr, param);
+				});
+				parser.state.current = old;
+				if(!result) return;
+				parser.state.current.addBlock(dep);
+				return true;
+			}
+
+			if(expr.arguments.length === 2 || expr.arguments.length === 3) {
+				try {
+					parser.inScope([], () => {
+						result = parser.applyPluginsBailResult("call require:amd:array", expr, param);
+					});
+					if(!result) {
+						dep = new UnsupportedDependency("unsupported", expr.range);
+						old.addDependency(dep);
+						if(parser.state.module)
+							parser.state.module.errors.push(new UnsupportedFeatureWarning(parser.state.module, "Cannot statically analyse 'require(..., ...)' in line " + expr.loc.start.line));
+						dep = null;
+						return true;
+					}
+					dep.functionBindThis = this.processFunctionArgument(parser, expr.arguments[1]);
+					if(expr.arguments.length === 3) {
+						dep.errorCallbackBindThis = this.processFunctionArgument(parser, expr.arguments[2]);
+					}
+				} finally {
+					parser.state.current = old;
+					if(dep)
+						parser.state.current.addBlock(dep);
+				}
+				return true;
+			}
+		});
+		parser.plugin("call require:amd:array", (expr, param) => {
+			if(param.isArray()) {
+				param.items.forEach((param) => {
+					const result = parser.applyPluginsBailResult("call require:amd:item", expr, param);
+					if(result === undefined) {
+						parser.applyPluginsBailResult("call require:amd:context", expr, param);
+					}
+				});
+				return true;
+			} else if(param.isConstArray()) {
+				const deps = [];
+				param.array.forEach((request) => {
+					let dep, localModule;
+					if(request === "require") {
+						dep = "__webpack_require__";
+					} else if(["exports", "module"].indexOf(request) >= 0) {
+						dep = request;
+					} else if(localModule = LocalModulesHelpers.getLocalModule(parser.state, request)) { // eslint-disable-line no-cond-assign
+						dep = new LocalModuleDependency(localModule);
+						dep.loc = expr.loc;
+						parser.state.current.addDependency(dep);
+					} else {
+						dep = new AMDRequireItemDependency(request);
+						dep.loc = expr.loc;
+						dep.optional = !!parser.scope.inTry;
+						parser.state.current.addDependency(dep);
+					}
+					deps.push(dep);
+				});
+				const dep = new AMDRequireArrayDependency(deps, param.range);
+				dep.loc = expr.loc;
+				dep.optional = !!parser.scope.inTry;
+				parser.state.current.addDependency(dep);
+				return true;
+			}
+		});
+		parser.plugin("call require:amd:item", (expr, param) => {
+			if(param.isConditional()) {
+				param.options.forEach((param) => {
+					const result = parser.applyPluginsBailResult("call require:amd:item", expr, param);
+					if(result === undefined) {
+						parser.applyPluginsBailResult("call require:amd:context", expr, param);
+					}
+				});
+				return true;
+			} else if(param.isString()) {
+				let dep, localModule;
+				if(param.string === "require") {
+					dep = new ConstDependency("__webpack_require__", param.string);
+				} else if(param.string === "module") {
+					dep = new ConstDependency(parser.state.module.moduleArgument || "module", param.range);
+				} else if(param.string === "exports") {
+					dep = new ConstDependency(parser.state.module.exportsArgument || "exports", param.range);
+				} else if(localModule = LocalModulesHelpers.getLocalModule(parser.state, param.string)) { // eslint-disable-line no-cond-assign
+					dep = new LocalModuleDependency(localModule, param.range);
+				} else {
+					dep = new AMDRequireItemDependency(param.string, param.range);
+				}
+				dep.loc = expr.loc;
+				dep.optional = !!parser.scope.inTry;
+				parser.state.current.addDependency(dep);
+				return true;
+			}
+		});
+		parser.plugin("call require:amd:context", (expr, param) => {
+			const dep = ContextDependencyHelpers.create(AMDRequireContextDependency, param.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 = AMDRequireDependenciesBlockParserPlugin;