/*
* 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.grammar;
import com.intellij.lang.ASTNode;
import com.intellij.lang.ParserDefinition;
import com.intellij.lang.PsiParser;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.project.Project;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.IFileElementType;
import com.intellij.psi.tree.TokenSet;
import org.intellij.grammar.parser.BnfLexer;
import org.intellij.grammar.parser.GrammarParser;
import org.intellij.grammar.psi.BnfTokenType;
import org.intellij.grammar.psi.BnfTypes;
import org.intellij.grammar.psi.impl.BnfFileImpl;
import org.jetbrains.annotations.NotNull;
/**
* User: gregory
* Date: 13.07.11
* Time: 22:43
*/
public class BnfParserDefinition implements ParserDefinition {
public static final IFileElementType BNF_FILE_ELEMENT_TYPE = new IFileElementType("BNF_FILE", BnfLanguage.INSTANCE);
public static final TokenSet WS = TokenSet.create(TokenType.WHITE_SPACE);
public static final IElementType BNF_LINE_COMMENT = BnfTypes.BNF_LINE_COMMENT;
public static final IElementType BNF_BLOCK_COMMENT = BnfTypes.BNF_BLOCK_COMMENT;
public static final TokenSet COMMENTS = TokenSet.create(BNF_LINE_COMMENT, BNF_BLOCK_COMMENT);
public static final TokenSet LITERALS = TokenSet.create(BnfTypes.BNF_STRING);
@NotNull
@Override
public Lexer createLexer(Project project) {
return new BnfLexer();
}
@Override
public PsiParser createParser(Project project) {
return new GrammarParser();
}
@Override
public IFileElementType getFileNodeType() {
return BNF_FILE_ELEMENT_TYPE;
}
@NotNull
@Override
public TokenSet getWhitespaceTokens() {
return WS;
}
@NotNull
@Override
public TokenSet getCommentTokens() {
return COMMENTS;
}
@NotNull
@Override
public TokenSet getStringLiteralElements() {
return LITERALS;
}
@NotNull
@Override
public PsiElement createElement(ASTNode astNode) {
return BnfTypes.Factory.createElement(astNode);
}
@Override
public PsiFile createFile(FileViewProvider fileViewProvider) {
return new BnfFileImpl(fileViewProvider);
}
@Override
public SpaceRequirements spaceExistanceTypeBetweenTokens(ASTNode astNode, ASTNode astNode1) {
return SpaceRequirements.MAY;
}
}