/*
* 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.Token;
import org.rythmengine.internal.dialect.Rythm;
import org.rythmengine.internal.parser.ParserBase;
/**
* Parse invocation:
*
* @myMacro() Note since this is also a pattern for expression parser, InvokeMacroParser must
* be put in front of InvokeTagParser and expression parser
*/
public class InvokeMacroParser extends CaretParserFactoryBase {
@Override
public IParser create(IContext ctx) {
return new ParserBase(ctx) {
@Override
public Token go() {
Regex r = new Regex(String.format(patternStr(), dialect().a()));
if (!r.search(remain())) return null;
String macro = r.stringMatched(2);
if (!ctx().getCodeBuilder().hasMacro(macro)) return null;
int curLine = currentLine();
step(r.stringMatched().length());
return new ExecMacroToken(macro, ctx(), curLine);
}
};
}
private static String patternStr() {
return "^(%s([_a-zA-Z][a-zA-Z$_\\.0-9]+)[ \t]*\\([ \t]*\\))";
}
public static void main(String[] args) {
InvokeMacroParser P = new InvokeMacroParser();
Regex r = new Regex(String.format(P.patternStr(), Rythm.INSTANCE.a()));
String s = "@ab ( )";
p(s, r);
}
}