/*
* Copyright 2011-2014 Gregory Shrago
*
* Licensed 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.intellij.jflex.parser;
import com.intellij.lang.PsiBuilder;
import com.intellij.lang.PsiParser;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import org.intellij.grammar.parser.GeneratedParserUtilBase;
import org.intellij.jflex.editor.JFlexBraceMatcher;
import org.intellij.jflex.psi.JFlexTypes;
/**
* @author gregsh
*/
public class JFlexParserUtil extends GeneratedParserUtilBase {
public static PsiBuilder adapt_builder_(IElementType root, PsiBuilder builder, PsiParser parser, TokenSet[] extendsSets) {
PsiBuilder result = GeneratedParserUtilBase.adapt_builder_(root, builder, parser, extendsSets);
ErrorState.get(result).braces = new JFlexBraceMatcher().getPairs();
ErrorState.get(result).altMode = true;
return result;
}
public static boolean anything(PsiBuilder builder, int level, GeneratedParserUtilBase.Parser condition) {
parseAsTree(GeneratedParserUtilBase.ErrorState.get(builder), builder, level + 1, DUMMY_BLOCK, true, TOKEN_ADVANCER, condition);
return true;
}
public static boolean anything2(PsiBuilder builder, int level, GeneratedParserUtilBase.Parser condition) {
parseAsTree(GeneratedParserUtilBase.ErrorState.get(builder), builder, level + 1, DUMMY_BLOCK, false, TOKEN_ADVANCER, condition);
return true;
}
public static boolean is_percent(PsiBuilder builder, int level) {
IElementType tokenType = builder.getTokenType();
return tokenType != null && tokenType.toString().startsWith("%");
}
public static boolean is_new_line(PsiBuilder builder, int level) {
if (builder.eof()) return true;
addVariant(builder, "<new-line>");
for (int i=-1; ; i--) {
IElementType type = builder.rawLookup(i);
if (type == TokenType.WHITE_SPACE) continue;
if (type == JFlexTypes.FLEX_LINE_COMMENT || type == JFlexTypes.FLEX_BLOCK_COMMENT) continue;
return type == JFlexParserDefinition.FLEX_NEWLINE || type == null;
}
}
}