/**
* Copyright (C) 2013-2016 The Rythm Engine project
* for LICENSE and other details see:
* https://github.com/rythmengine/rythmengine
*/
package org.rythmengine.internal.parser.build_in;
import org.rythmengine.internal.IContext;
import org.rythmengine.internal.IParser;
import org.rythmengine.internal.Token;
import org.rythmengine.internal.parser.RemoveLeadingLineBreakAndSpacesParser;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* CommentParser deals with the following type comments:
* 1. inline comment. e.g. @/ this is my comment \n
* 2. block comment. e.g. @* this is my multi \nline comments *@
* User: luog
* Date: 2/12/11
* Time: 3:04 PM
*/
public class CommentParser extends CaretParserFactoryBase {
public static final String COMMENT_FORMAT="^(%s/.*?)(\n.*|$)";
public IParser create(final IContext ctx) {
return new RemoveLeadingLineBreakAndSpacesParser(ctx) {
public Token go() {
Pattern p = inlineComment();
Matcher m = p.matcher(remain());
if (!m.matches()) {
p = blockComment();
m = p.matcher(remain());
if (!m.matches()) return null;
} else {
// special process to directive comments
if (ctx.insideDirectiveComment()) {
ctx.leaveDirectiveComment();
}
}
String s = m.group(1);
ctx.step(s.length());
return Token.EMPTY_TOKEN;
}
private Pattern inlineComment() {
String a=a();
Pattern result = Pattern.compile(String.format(COMMENT_FORMAT, a), Pattern.DOTALL);
return result;
// IContext ctx = ctx();
// if (ctx.insideDirectiveComment()) {
// return Pattern.compile(String.format("^(%s//.*?)(%s|\n).*", a(), S.escapeRegex(ctx.peekCodeType().commentEnd())), Pattern.DOTALL);
// } else {
// return Pattern.compile(String.format("^(%s//.*?)\n.*", a()), Pattern.DOTALL);
// }
}
private Pattern blockComment() {
return Pattern.compile(String.format("^(%s\\*.*?\\*%s).*", a(), a()), Pattern.DOTALL);
}
};
}
}