/*
* 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.CodeToken;
import org.rythmengine.internal.parser.ParserBase;
import org.rythmengine.utils.S;
public class IncludeParser extends KeywordParserFactory {
private static final String R = "(^\\n?[ \\t\\x0B\\f]*%s(%s\\s*((?@()))\\s*))";
public IncludeParser() {
}
protected String patternStr() {
return R;
}
public IParser create(final IContext ctx) {
return new ParserBase(ctx) {
public Token go() {
Regex r = reg(dialect());
if (!r.search(remain())) {
raiseParseException("Error parsing @include statement. Correct usage: @include(\"foo.bar, a.b.c, ...\")");
}
final String matched = r.stringMatched();
if (matched.startsWith("\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));
}
}
}
int lineNo = ctx().currentLine();
step(matched.length());
String s = r.stringMatched(3);
if (S.isEmpty(s)) {
raiseParseException("Error parsing @include statement. Correct usage: @include(foo.bar, a.b.c, ...)");
}
s = S.stripBraceAndQuotation(s);
try {
String code = ctx().getCodeBuilder().addIncludes(s, lineNo);
if (matched.endsWith("\n")) {
code = code + ";p(\"\\n\");";
}
return new CodeToken(code, ctx());
} catch (NoClassDefFoundError e) {
raiseParseException("error adding includes: " + e.getMessage() + "\n possible cause: lower/upper case issue on windows platform");
return null;
}
}
};
}
@Override
public Keyword keyword() {
return Keyword.INCLUDE;
}
}