jaroslav@717: /**
jaroslav@717:  * Back 2 Browser Bytecode Translator
jaroslav@717:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@717:  *
jaroslav@717:  * This program is free software: you can redistribute it and/or modify
jaroslav@717:  * it under the terms of the GNU General Public License as published by
jaroslav@717:  * the Free Software Foundation, version 2 of the License.
jaroslav@717:  *
jaroslav@717:  * This program is distributed in the hope that it will be useful,
jaroslav@717:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@717:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@717:  * GNU General Public License for more details.
jaroslav@717:  *
jaroslav@717:  * You should have received a copy of the GNU General Public License
jaroslav@717:  * along with this program. Look for COPYING file in the top folder.
jaroslav@717:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@717:  */
jaroslav@717: package org.apidesign.bck2brwsr.ide.editor;
jaroslav@717: 
jaroslav@717: import java.util.regex.Matcher;
jaroslav@717: import java.util.regex.Pattern;
jaroslav@717: 
jaroslav@717: public class JsniCommentTokenizer {
jaroslav@717: 
jaroslav@717:     /**
jaroslav@717:      * Tokenize the contents of JSNI comment into the provided {@linkplain Sink}.
jaroslav@717:      * @param in the contents of JSNI comment
jaroslav@717:      * @param out the sink that consumes parsed tokens
jaroslav@717:      */
jaroslav@717:     public void process(final String in, final Sink out) {
jaroslav@717:         final Matcher member = Pattern.compile("@([^:]+)::([a-zA-Z_$][a-zA-Z\\d_$]*)").matcher(in);
jaroslav@717:         final Matcher signature = Pattern.compile("\\(([^\\)]*)\\)").matcher(in);
jaroslav@717: 
jaroslav@717:         int i = 0;
jaroslav@717:         while (true) {
jaroslav@717:             if (member.find(i)) {
jaroslav@717:                 final int memberStart = member.start();
jaroslav@717:                 final int memberEnd = member.end();
jaroslav@717:                 if (memberStart > i) out.javascript(in.substring(i, memberStart));
jaroslav@717: 
jaroslav@717:                 final String clazz = member.group(1);
jaroslav@717:                 final String name = member.group(2);
jaroslav@717: 
jaroslav@717:                 if (in.charAt(memberEnd) == '(') {
jaroslav@717:                     if (!signature.find(memberEnd)) {
jaroslav@717:                         throw new IllegalStateException("Expected method signature");
jaroslav@717:                     }
jaroslav@717:                     assert signature.start() == memberEnd;
jaroslav@717:                     out.method(clazz, name, signature.group(1));
jaroslav@717:                     i = signature.end();
jaroslav@717:                 } else {
jaroslav@717:                     out.field(clazz, name);
jaroslav@717:                     i = memberEnd;
jaroslav@717:                 }
jaroslav@717:             } else {
jaroslav@717:                 out.javascript(in.substring(i, in.length()));
jaroslav@717:                 break;
jaroslav@717:             }
jaroslav@717:         }
jaroslav@717:     }
jaroslav@717: 
jaroslav@717: 
jaroslav@717:     public static interface Sink {
jaroslav@717:         void javascript(String s);
jaroslav@717: 
jaroslav@717:         void method(String clazz, String method, String signature);
jaroslav@717: 
jaroslav@717:         void field(String clazz, String field);
jaroslav@717:     }
jaroslav@717: }