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/*
*
* Copyright 2002-2004 The Ant-Contrib project
*
* Licensed 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 net.sf.antcontrib.cpptasks.parser;
import java.io.IOException;
import java.io.Reader;
import java.util.Vector;
/**
* A parser that extracts #include statements from a Reader.
*
* @author Adam Murdoch
* @author Curt Arnold
*/
public final class CParser extends AbstractParser implements Parser {
private final Vector includes = new Vector();
private AbstractParserState newLineState;
/**
*
*
*/
public CParser() {
AbstractParserState quote = new FilenameState(this, new char[]{'"'});
AbstractParserState bracket = new FilenameState(this, new char[]{'>'});
AbstractParserState postE = new PostE(this, bracket, quote);
//
// nclude
//
AbstractParserState e = new LetterState(this, 'e', postE, null);
AbstractParserState d = new LetterState(this, 'd', e, null);
AbstractParserState u = new LetterState(this, 'u', d, null);
AbstractParserState l = new LetterState(this, 'l', u, null);
AbstractParserState c = new LetterState(this, 'c', l, null);
AbstractParserState n = new LetterState(this, 'n', c, null);
//
// mport is equivalent to nclude
//
AbstractParserState t = new LetterState(this, 't', postE, null);
AbstractParserState r = new LetterState(this, 'r', t, null);
AbstractParserState o = new LetterState(this, 'o', r, null);
AbstractParserState p = new LetterState(this, 'p', o, null);
AbstractParserState m = new LetterState(this, 'm', p, null);
//
// switch between
//
AbstractParserState n_m = new BranchState(this, new char[]{'n', 'm'},
new AbstractParserState[]{n, m}, null);
AbstractParserState i = new WhitespaceOrLetterState(this, 'i', n_m);
newLineState = new LetterState(this, '#', i, null);
}
public void addFilename(String include) {
includes.addElement(include);
}
public String[] getIncludes() {
String[] retval = new String[includes.size()];
includes.copyInto(retval);
return retval;
}
public AbstractParserState getNewLineState() {
return newLineState;
}
public void parse(Reader reader) throws IOException {
includes.setSize(0);
super.parse(reader);
}
}
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