| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.google.dart.compiler.ast; |
| |
| import com.google.dart.compiler.resolver.Element; |
| import com.google.dart.compiler.resolver.MethodNodeElement; |
| |
| /** |
| * Represents a Dart array access expression (a[b]). |
| */ |
| public class DartArrayAccess extends DartExpression { |
| |
| private DartExpression target; |
| private boolean isCascade; |
| private DartExpression key; |
| private MethodNodeElement element; |
| |
| public DartArrayAccess(DartExpression target, DartExpression key) { |
| this(target, false, key); |
| } |
| |
| public DartArrayAccess(DartExpression target, boolean isCascade, DartExpression key) { |
| this.target = becomeParentOf(target); |
| this.isCascade = isCascade; |
| this.key = becomeParentOf(key); |
| } |
| |
| @Override |
| public boolean isAssignable() { |
| return true; |
| } |
| |
| public boolean isCascade() { |
| return isCascade; |
| } |
| |
| public DartExpression getKey() { |
| return key; |
| } |
| |
| public DartExpression getTarget() { |
| return target; |
| } |
| |
| public DartExpression getRealTarget() { |
| if (isCascade) { |
| DartNode ancestor = getParent(); |
| while (!(ancestor instanceof DartCascadeExpression)) { |
| if (ancestor == null) { |
| return target; |
| } |
| ancestor = ancestor.getParent(); |
| } |
| return ((DartCascadeExpression) ancestor).getTarget(); |
| } |
| return target; |
| } |
| |
| @Override |
| public void visitChildren(ASTVisitor<?> visitor) { |
| safelyVisitChild(target, visitor); |
| safelyVisitChild(key, visitor); |
| } |
| |
| @Override |
| public <R> R accept(ASTVisitor<R> visitor) { |
| return visitor.visitArrayAccess(this); |
| } |
| |
| @Override |
| public MethodNodeElement getElement() { |
| return element; |
| } |
| |
| @Override |
| public void setElement(Element element) { |
| this.element = (MethodNodeElement) element; |
| } |
| } |