| /* |
| * |
| * 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.parsing; |
| |
| import java.util.List; |
| |
| import org.apache.royale.compiler.internal.parsing.TokenBase; |
| |
| import antlr.Token; |
| import antlr.TokenStream; |
| |
| /** |
| * Implementation of TokenStream that allows us to feed lists of ASTokens to ASTreeAssembler. |
| */ |
| public class GenericTokenStream implements TokenStream |
| { |
| /** |
| * Constructor |
| * @param tokens list of ASTokens (or any subclass of antlr.Token) |
| */ |
| public GenericTokenStream(List<?extends ICMToken> tokens) |
| { |
| this.tokens = tokens.toArray(new TokenBase[0]); |
| size = this.tokens.length; |
| position = -1; |
| eofToken = new Token(Token.EOF_TYPE); |
| } |
| |
| /** |
| * Constructor |
| * @param tokens list of ASTokens (or any subclass of antlr.Token) |
| */ |
| public GenericTokenStream(TokenBase[] tokens) |
| { |
| this.tokens = tokens; |
| size = tokens.length; |
| position = -1; |
| eofToken = new Token(Token.EOF_TYPE); |
| } |
| |
| private TokenBase[] tokens; |
| private int size; |
| private int position; |
| private Token eofToken; |
| |
| /** |
| * Retrieves next token |
| * @return returns next token from token iterator |
| */ |
| @Override |
| public Token nextToken() |
| { |
| position++; |
| |
| if (position < size) |
| return tokens[position]; |
| |
| return eofToken; |
| } |
| } |