| /* |
| * 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.SourceInfo; |
| |
| import java.util.List; |
| |
| /** |
| * New array expression. |
| */ |
| public class JNewArray extends JExpression { |
| |
| public static JNewArray createDims(SourceInfo info, JArrayType arrayType, List<JExpression> dims) { |
| // Produce all class literals that will eventually get generated. |
| int realDims = 0; |
| for (JExpression dim : dims) { |
| if (dim instanceof JAbsentArrayDimension) { |
| break; |
| } |
| ++realDims; |
| } |
| |
| return new JNewArray(info, arrayType, dims, null, |
| new JClassLiteral(info.makeChild(), arrayType.getLeafType())); |
| } |
| |
| public static JNewArray createInitializers(SourceInfo info, JArrayType arrayType, |
| List<JExpression> initializers) { |
| return new JNewArray(info, arrayType, null, initializers, |
| new JClassLiteral(info.makeChild(), arrayType.getLeafType())); |
| } |
| |
| public final List<JExpression> dims; |
| |
| public final List<JExpression> initializers; |
| |
| /** |
| * The list of class literals that will be needed to support this expression. |
| */ |
| private JClassLiteral leafTypeClassLiteral; |
| |
| private JArrayType type; |
| |
| public JNewArray(SourceInfo info, JArrayType type, List<JExpression> dims, |
| List<JExpression> initializers, JClassLiteral leafTypeClassLiteral) { |
| super(info); |
| this.type = type; |
| this.dims = dims; |
| this.initializers = initializers; |
| this.leafTypeClassLiteral = leafTypeClassLiteral; |
| assert !(leafTypeClassLiteral.getRefType() instanceof JArrayType); |
| } |
| |
| public JArrayType getArrayType() { |
| return type; |
| } |
| |
| /** |
| * Return a class literal for the leaf type of the array. |
| */ |
| public JClassLiteral getLeafTypeClassLiteral() { |
| return leafTypeClassLiteral; |
| } |
| |
| @Override |
| public JReferenceType getType() { |
| return type.strengthenToNonNull().strengthenToExact(); |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| if (initializers != null) { |
| for (JExpression initializer : initializers) { |
| if (initializer.hasSideEffects()) { |
| return true; |
| } |
| } |
| } |
| if (dims != null) { |
| for (JExpression dim : dims) { |
| if (dim.hasSideEffects()) { |
| return true; |
| } |
| } |
| } |
| // The new operation on an array does not actually cause side effects. |
| return false; |
| } |
| |
| public void setType(JArrayType type) { |
| this.type = type; |
| } |
| |
| @Override |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| assert ((dims != null) ^ (initializers != null)); |
| |
| if (dims != null) { |
| visitor.accept(dims); |
| } |
| |
| if (initializers != null) { |
| visitor.accept(initializers); |
| } |
| |
| // Visit the base class that will eventually get generated. |
| leafTypeClassLiteral = (JClassLiteral) visitor.accept(leafTypeClassLiteral); |
| } |
| visitor.endVisit(this, ctx); |
| } |
| } |