| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.royale.compiler.internal.as.codegen; |
| |
| import org.apache.royale.abc.semantics.Label; |
| import org.apache.royale.compiler.internal.tree.as.LabeledStatementNode; |
| |
| /** |
| * {@link ControlFlowContext} for labeled statement nodes. This type of context |
| * can be matched by break statements with a label. |
| * <p> |
| * continue statements with a label match {@link LoopControlFlowContext}'s. |
| * <p> |
| * goto statements match {@code LabelScopeControlFlowContext}'s. |
| */ |
| public final class LabeledStatementControlFlowContext extends ControlFlowContext |
| { |
| LabeledStatementControlFlowContext(LabeledStatementNode node, String labelName) |
| { |
| super(node); |
| this.labelName = labelName; |
| } |
| |
| private final String labelName; |
| private Label breakLabel; |
| |
| @Override |
| boolean hasBreakLabel(String label) |
| { |
| if (labelName == null) |
| return false; |
| return labelName.equals(label); |
| } |
| |
| @Override |
| Label getBreakLabel() |
| { |
| assert labelName != null; |
| if ( null == this.breakLabel ) |
| this.breakLabel = new Label("#break#" + labelName); |
| return this.breakLabel; |
| } |
| |
| /** |
| * @return true if this context's break label was ever referenced, false |
| * otherwise. |
| */ |
| boolean hasActiveBreak() |
| { |
| return breakLabel != null; |
| } |
| |
| } |