InheritanceClause.java

package org.fandev.lang.fan.parsing.statements.typeDefinitions;

import com.intellij.lang.PsiBuilder;
import com.intellij.psi.tree.IElementType;
import static org.fandev.lang.fan.FanElementTypes.*;
import static org.fandev.lang.fan.FanTokenTypes.COLON;
import static org.fandev.lang.fan.FanTokenTypes.COMMA;
import org.fandev.lang.fan.parsing.util.ParserUtils;

/**
 * @author Dror Bereznitsky
 * @date Jan 6, 2009 4:59:02 PM
 */
public class InheritanceClause {
    public static IElementType parse(final PsiBuilder builder) {
        final PsiBuilder.Marker sccMarker = builder.mark();

        if (!ParserUtils.getToken(builder, COLON)) {
            sccMarker.rollbackTo();
            return NONE;
        }

        do {
            ParserUtils.removeNls(builder);
            if (!ReferenceElement.parseReferenceElement(builder)) {
                sccMarker.rollbackTo();
                return WRONGWAY;
            }
            ParserUtils.removeNls(builder);
        } while (ParserUtils.getToken(builder, COMMA));

        sccMarker.done(INHERITANCE_CLAUSE);
        return INHERITANCE_CLAUSE;
    }
}