| /* |
| * Copyright 2008 Google Inc. |
| * |
| * 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.gwt.dev.jjs.ast; |
| |
| import com.google.gwt.dev.jjs.SourceOrigin; |
| |
| /** |
| * Instances are shared. |
| */ |
| public class JArrayType extends JReferenceType { |
| |
| private transient int dims = 0; |
| private final JType elementType; |
| private transient JType leafType = null; |
| |
| public JArrayType(JType elementType) { |
| super(elementType.getSourceInfo().makeChild(SourceOrigin.UNKNOWN), |
| elementType.getName() + "[]"); |
| // Array types are never constructed with analysis decorated types. |
| assert elementType == elementType.getUnderlyingType(); |
| this.elementType = elementType; |
| } |
| |
| public int getDims() { |
| if (dims == 0) { |
| dims = 1; |
| if (elementType instanceof JArrayType) { |
| dims += ((JArrayType) elementType).getDims(); |
| } |
| } |
| return dims; |
| } |
| |
| public JType getElementType() { |
| return elementType; |
| } |
| |
| @Override |
| public String getJavahSignatureName() { |
| return "_3" + elementType.getJavahSignatureName(); |
| } |
| |
| @Override |
| public String getJsniSignatureName() { |
| return "[" + elementType.getJsniSignatureName(); |
| } |
| |
| @Override |
| public JEnumType isEnumOrSubclass() { |
| return null; |
| } |
| |
| public JType getLeafType() { |
| if (leafType == null) { |
| if (elementType instanceof JArrayType) { |
| leafType = ((JArrayType) elementType).getLeafType(); |
| } else { |
| leafType = elementType; |
| } |
| } |
| return leafType; |
| } |
| |
| @Override |
| public boolean isArrayType() { |
| return true; |
| } |
| |
| @Override |
| public boolean isPrimitiveType() { |
| return false; |
| } |
| |
| @Override |
| public boolean isAbstract() { |
| return false; |
| } |
| |
| @Override |
| public boolean isExternal() { |
| return elementType.isExternal(); |
| } |
| |
| @Override |
| public boolean isFinal() { |
| return elementType.isFinal(); |
| } |
| |
| // Returns true only for c.g.g.c.JavaScriptObject |
| private boolean isJavaScriptObject(JType elementType) { |
| if (!(elementType instanceof JClassType)) { |
| return false; |
| } |
| |
| JClassType classType = (JClassType) elementType; |
| return classType.isJsoType() && !classType.getSuperClass().isJsoType(); |
| } |
| |
| @Override |
| public boolean canBeImplementedExternally() { |
| return getLeafType().canBeImplementedExternally() |
| // JSO[] is considered implemented by native arrays. |
| || isJavaScriptObject(getElementType()); |
| } |
| |
| @Override |
| public boolean isJsType() { |
| return false; |
| } |
| |
| @Override |
| public boolean isJsFunction() { |
| return false; |
| } |
| |
| @Override |
| public boolean isJsFunctionImplementation() { |
| return false; |
| } |
| |
| @Override |
| public boolean isJsNative() { |
| return getLeafType().isJsNative(); |
| } |
| |
| @Override |
| public boolean isJsoType() { |
| return false; |
| } |
| |
| @Override |
| public boolean canBeReferencedExternally() { |
| return getLeafType().canBeReferencedExternally(); |
| } |
| |
| @Override |
| public boolean isJavaLangObject() { |
| return false; |
| } |
| |
| @Override |
| public boolean replaces(JType originalType) { |
| return (originalType instanceof JArrayType) |
| && elementType.replaces(((JArrayType) originalType).getElementType()); |
| } |
| |
| @Override |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| } |
| visitor.endVisit(this, ctx); |
| } |
| |
| } |