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A few more code cleanups to ths ijs package
------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=179740352
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|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| /* | ||
| * Copyright 2017 The Closure Compiler Authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.google.javascript.jscomp.ijs; | ||
|
|
||
| import static com.google.common.base.Preconditions.checkArgument; | ||
| import static com.google.common.base.Preconditions.checkState; | ||
|
|
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| import com.google.javascript.jscomp.NodeUtil; | ||
| import com.google.javascript.rhino.JSDocInfo; | ||
| import com.google.javascript.rhino.Node; | ||
|
|
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| /** | ||
| * Static utility methods for dealing with classes. The primary benefit is for papering over | ||
| * the differences between ES6 class and goog.defineClass syntax. | ||
| */ | ||
| final class ClassUtil { | ||
| private ClassUtil() {} | ||
|
|
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| static boolean isThisProp(Node getprop) { | ||
| return getprop.isGetProp() && getprop.getFirstChild().isThis(); | ||
| } | ||
|
|
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| static String getPrototypeNameOfThisProp(Node getprop) { | ||
| checkArgument(isThisProp(getprop)); | ||
| Node function = NodeUtil.getEnclosingFunction(getprop); | ||
| String className = getClassName(function); | ||
| checkState(className != null && !className.isEmpty()); | ||
| return className + ".prototype." + getprop.getLastChild().getString(); | ||
| } | ||
|
|
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| static String getPrototypeNameOfMethod(Node function) { | ||
| checkArgument(isClassMethod(function)); | ||
| String className = getClassName(function); | ||
| checkState(className != null && !className.isEmpty()); | ||
| return className + ".prototype." + function.getParent().getString(); | ||
| } | ||
|
|
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| static boolean isClassMethod(Node functionNode) { | ||
| checkArgument(functionNode.isFunction()); | ||
| Node parent = functionNode.getParent(); | ||
| if (parent.isMemberFunctionDef() | ||
| && parent.getParent().isClassMembers()) { | ||
| // ES6 class | ||
| return true; | ||
| } | ||
| // goog.defineClass | ||
| return parent.isStringKey() | ||
| && parent.getParent().isObjectLit() | ||
| && parent.getGrandparent().isCall() | ||
| && parent.getGrandparent().getFirstChild().matchesQualifiedName("goog.defineClass"); | ||
| } | ||
|
|
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| static String getClassName(Node functionNode) { | ||
| if (isClassMethod(functionNode)) { | ||
| Node parent = functionNode.getParent(); | ||
| if (parent.isMemberFunctionDef()) { | ||
| // ES6 class | ||
| Node classNode = functionNode.getGrandparent().getParent(); | ||
| checkState(classNode.isClass()); | ||
| return NodeUtil.getName(classNode); | ||
| } | ||
| // goog.defineClass | ||
| checkState(parent.isStringKey()); | ||
| Node defineClassCall = parent.getGrandparent(); | ||
| checkState(defineClassCall.isCall()); | ||
| return NodeUtil.getBestLValue(defineClassCall).getQualifiedName(); | ||
| } | ||
| return NodeUtil.getName(functionNode); | ||
| } | ||
|
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| static boolean isConstructor(Node functionNode) { | ||
| if (isClassMethod(functionNode)) { | ||
| return "constructor".equals(functionNode.getParent().getString()); | ||
| } | ||
| JSDocInfo jsdoc = NodeUtil.getBestJSDocInfo(functionNode); | ||
| return jsdoc != null && jsdoc.isConstructor(); | ||
| } | ||
| } |
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