/*
* 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.ParserBase;
/**
* Parse @get("name")
*/
public class GetParser extends KeywordParserFactory {
@Override
public Keyword keyword() {
return Keyword.GET;
}
@Override
protected String patternStr() {
return "^(\\n?[ \\t\\x0B\\f]*%s%s((?@())))";
}
@Override
public IParser create(final IContext ctx) {
return new ParserBase(ctx) {
@Override
public Token go() {
Regex r = reg(dialect());
if (!r.search(remain())) {
raiseParseException("Error parsing @get call. Correct usage: @get(\"myVal\")");
}
final String matched = r.stringMatched();
int line = ctx.currentLine();
if (matched.startsWith("\n") || matched.endsWith("\n")) {
if (matched.startsWith("\n")) line = line + 1;
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));
}
}
}
step(r.stringMatched().length()); // remain: @get("name")...
String s = r.stringMatched(2); // s: ("name")
s = s.substring(1); // s: "name")
s = s.substring(0, s.length() - 1); // s: "name"
r = new Regex("(((?@\"\")|(?@'')|[a-zA-Z_][\\w_]+)(\\s*[:=,]\\s*('.'|(?@\"\")|[a-zA-Z_][a-zA-Z0-9_\\.]*(?@())*(?@[])*(?@())*(\\.[a-zA-Z][a-zA-Z0-9_\\.]*(?@())*(?@[])*(?@())*)*))?)");
if (!r.search(s)) {
raiseParseException("Error parsing @get tag. Correct usage: @get(\"name\"[:default-value])");
}
s = r.stringMatched(2); // propName: "name"
if (s.startsWith("\"") || s.startsWith("'")) {
s = s.substring(1);
s = s.substring(0, s.length() - 1);
// propName: name
}
final String propName = s;
final String propDefVal = r.stringMatched(4);
logger.warn("@get directive is deprecated. Please follow instruction at http://rythmengine.org/doc/directive.md#get to change your code");
return new Token("", ctx()) {
@Override
protected void output() {
p("\np(__getRenderProperty(\"").p(propName).p("\", ").p(propDefVal == null ? "null" : propDefVal).p("));");
}
};
}
};
}
}