/*
* Copyright (C) 2013 The Rythm Engine project
* Gelin Luo <greenlaw110(at)gmail.com>
*
* 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.rythmengine.internal.parser.build_in;
import com.stevesoft.pat.Regex;
import org.rythmengine.internal.IContext;
import org.rythmengine.internal.IParser;
import org.rythmengine.internal.Keyword;
import org.rythmengine.internal.Token;
import org.rythmengine.internal.parser.BlockCodeToken;
import org.rythmengine.internal.parser.RemoveLeadingLineBreakAndSpacesParser;
import java.util.regex.Matcher;
/**
* Parse @nocompact() {...}
*/
public class NoCompactParser extends KeywordParserFactory {
@Override
public Keyword keyword() {
return Keyword.NOCOMPACT;
}
public IParser create(final IContext ctx) {
return new RemoveLeadingLineBreakAndSpacesParser(ctx) {
public Token go() {
Matcher m = ptn(dialect()).matcher(remain());
if (!m.matches()) return null;
final String matched = m.group(1);
step(matched.length());
if (matched.startsWith("\n") || matched.endsWith("\n")) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken("\n", ctx));
Regex r0 = new Regex("\\n([ \\t\\x0B\\f]*).*");
if (r0.search(matched)) {
String blank = r0.stringMatched(1);
if (blank.length() > 0) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken(blank, ctx));
}
}
} else {
Regex r0 = new Regex("([ \\t\\x0B\\f]*).*");
if (r0.search(matched)) {
String blank = r0.stringMatched(1);
if (blank.length() > 0) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken(blank, ctx));
}
}
}
return new BlockCodeToken("", ctx()) {
@Override
public void openBlock() {
ctx().getCodeBuilder().addBuilder(new Token("", ctx()) {
@Override
protected void output() {
ctx().pushCompact(false);
super.output();
}
});
}
@Override
public String closeBlock() {
ctx().getCodeBuilder().addBuilder(new Token("", ctx()) {
@Override
protected void output() {
ctx().popCompact();
super.output();
}
});
return "";
}
};
}
};
}
@Override
protected String patternStr() {
return "(\\n?[ \\t\\x0B\\f]*%s%s\\s*\\(\\s*\\)[\\s]*\\{?[ \\t\\x0B\\f]*\\n?).*";
}
}