| /* |
| * |
| * 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.tree.as; |
| |
| /** |
| * An AST node representing an <code>if</code> statement. |
| * <p> |
| * The shape of this node is |
| * <pre> |
| * IIfNode |
| * IConditionalNode <-- ??? |
| * IConditionalNode <-- getElseIfNodes()[0] |
| * IConditionalNode <-- getElseIfNodes()[1] |
| * ... |
| * ITerminalNode <-- getElseNode() |
| * </pre> |
| * Example 1: |
| * <pre> |
| * if (a > b) |
| * return 1; |
| * </pre> |
| * is represented as |
| * <pre> |
| * IIfNode |
| * IConditionalNode |
| * IBinaryOperatorNode ">" |
| * IIdentifierNode "a" |
| * IIdentifierNode "b" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode 1 |
| * </pre> |
| * Example 2: |
| * <pre> |
| * if (a > b) |
| * return 1; |
| * else |
| * return 2; |
| * </pre> |
| * is represented as |
| * <pre> |
| * IIfNode |
| * IConditionalNode |
| * IBinaryOperatorNode ">" |
| * IIdentifierNode "a" |
| * IIdentifierNode "b" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode 1 |
| * ITerminalNode "else" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode 2 |
| * </pre> |
| * Example 3: |
| * <pre> |
| * if (a > b) |
| * return 1; |
| * else if (a < b) |
| * return -1; |
| * else |
| * return 0; |
| * </pre> |
| * is represented as |
| * <pre> |
| * IIfNode |
| * IConditionalNode |
| * IBinaryOperatorNode ">" |
| * IIdentifierNode "a" |
| * IIdentifierNode "b" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode 1 |
| * IConditionalNode |
| * IBinaryOperatorNode "<" |
| * IIdentifierNode "a" |
| * IIdentifierNode "b" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode -1 |
| * ITerminalNode "else" |
| * IBlockNode |
| * IReturnNode |
| * INumericLiteralNode 0 |
| * </pre> |
| */ |
| public interface IIfNode extends IConditionalNode |
| { |
| /** |
| * Returns an in-order array of else if statements that are branches of this |
| * if statement |
| * |
| * @return an array of {@link IConditionalNode} elements |
| */ |
| IConditionalNode[] getElseIfNodes(); |
| |
| /** |
| * Returns the else clause of this if statement |
| * |
| * @return an {@link ITerminalNode} or null |
| */ |
| ITerminalNode getElseNode(); |
| } |