01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
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31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
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40: */
41:
42: package org.netbeans.modules.cnd.apt.support;
43:
44: import antlr.RecognitionException;
45: import antlr.Token;
46: import antlr.TokenStream;
47: import antlr.TokenStreamException;
48: import org.netbeans.modules.cnd.apt.support.APTExpandedStream;
49: import org.netbeans.modules.cnd.apt.impl.support.MacroExpandedToken;
50:
51: /**
52: *
53: * @author Vladimir Voskresensky
54: */
55: public class APTMacroExpandedStream extends APTExpandedStream {
56:
57: public APTMacroExpandedStream(TokenStream stream,
58: APTMacroCallback callback) {
59: super (stream, callback);
60: }
61:
62: protected TokenStream createMacroBodyWrapper(Token token,
63: APTMacro macro) throws TokenStreamException,
64: RecognitionException {
65: TokenStream origExpansion = super .createMacroBodyWrapper(token,
66: macro);
67: Token last = getLastExtractedParamRPAREN();
68: if (last == null) {
69: last = token;
70: }
71: TokenStream expandedMacros = new MacroExpandWrapper(token,
72: origExpansion, last);
73: return expandedMacros;
74: }
75:
76: private static final class MacroExpandWrapper implements
77: TokenStream {
78: private final Token expandedFrom;
79: private final TokenStream expandedMacros;
80: private final Token endOffsetToken;
81:
82: public MacroExpandWrapper(Token expandedFrom,
83: TokenStream expandedMacros, Token endOffsetToken) {
84: this .expandedFrom = expandedFrom;
85: this .expandedMacros = expandedMacros;
86: assert endOffsetToken != null : "end offset token must be valid";
87: this .endOffsetToken = endOffsetToken;
88: }
89:
90: public Token nextToken() throws TokenStreamException {
91: Token expandedTo = expandedMacros.nextToken();
92: Token outToken = new MacroExpandedToken(expandedFrom,
93: expandedTo, endOffsetToken);
94: return outToken;
95: }
96: }
97: }
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