/*
* 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.dialect;
import org.rythmengine.RythmEngine;
import org.rythmengine.internal.*;
import org.rythmengine.internal.compiler.TemplateClass;
import org.rythmengine.internal.parser.build_in.KeywordParserFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import java.util.*;
public abstract class DialectBase implements IDialect {
protected DialectBase() {
registerBuildInParsers();
}
private List<IParserFactory> freeParsers = new ArrayList<IParserFactory>();
@Override
public void registerParserFactory(IParserFactory parser) {
if (parser instanceof KeywordParserFactory) {
KeywordParserFactory kp = (KeywordParserFactory) parser;
IKeyword kw = kp.keyword();
if (kw.isRegexp()) keywords2.put(kw.toString(), kp);
else keywords.put(kw.toString(), kp);
} else {
if (!freeParsers.contains(parser)) freeParsers.add(parser);
}
}
private final Map<String, KeywordParserFactory> keywords = new HashMap<String, KeywordParserFactory>();
// - for keyword is regexp
private final Map<String, KeywordParserFactory> keywords2 = new HashMap<String, KeywordParserFactory>();
private void registerBuildInParsers() {
for (Class<?> c : buildInParserClasses()) {
if (!Modifier.isAbstract(c.getModifiers())) {
@SuppressWarnings("unchecked")
Class<? extends IParserFactory> c0 = (Class<? extends IParserFactory>) c;
try {
Constructor<? extends IParserFactory> ct = c0.getConstructor();
ct.setAccessible(true);
IParserFactory f = ct.newInstance();
registerParserFactory(f);
} catch (Exception e) {
if (e instanceof RuntimeException) throw (RuntimeException) e;
else throw new RuntimeException(e);
}
}
}
}
public IParser createBuildInParser(String keyword, IContext context) {
KeywordParserFactory f = keywords.get(keyword.toLowerCase());
if (null == f) {
for (String r : keywords2.keySet()) {
if (keyword.matches(r)) {
f = keywords2.get(r);
break;
}
}
}
return null == f ? null : f.create(context);
}
public Iterable<IParserFactory> freeParsers() {
return new Iterable<IParserFactory>() {
final List<IParserFactory> fs = new ArrayList<IParserFactory>(freeParsers);
@Override
public Iterator<IParserFactory> iterator() {
return new Iterator<IParserFactory>() {
private int cursor = 0;
@Override
public boolean hasNext() {
return cursor < fs.size();
}
@Override
public IParserFactory next() {
return fs.get(cursor++);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
}
protected abstract Class<?>[] buildInParserClasses();
@Override
public boolean equals(Object o) {
if (o == this) return true;
if (o instanceof IDialect) {
return getClass().equals(o.getClass());
}
return false;
}
@Override
public int hashCode() {
return id().hashCode();
}
@Override
public String toString() {
return String.format("%s Dialect", id());
}
@Override
public boolean isMyTemplate(String template) {
return false;
}
@Override
public void begin(IContext ctx) {
}
@Override
public void end(IContext ctx) {
}
@Override
public boolean enableScripting() {
return true;
}
@Override
public boolean enableFreeForLoop() {
return true;
}
@Override
public CodeBuilder createCodeBuilder(String template, String className, String tagName, TemplateClass templateClass, RythmEngine engine) {
return new CodeBuilder(template, className, tagName, templateClass, engine, this);
}
}