/*
* 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.livePreview;
import com.intellij.extapi.psi.ASTWrapperPsiElement;
import com.intellij.extapi.psi.PsiFileBase;
import com.intellij.lang.ASTNode;
import com.intellij.lang.ParserDefinition;
import com.intellij.lang.PsiParser;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.fileTypes.FileType;
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.jetbrains.annotations.NotNull;
/**
* @author gregsh
*/
public class LivePreviewParserDefinition implements ParserDefinition {
public static final IElementType COMMENT = new IElementType("COMMENT", LivePreviewLanguage.BASE_INSTANCE);
public static final IElementType STRING = new IElementType("STRING", LivePreviewLanguage.BASE_INSTANCE);
public static final IElementType NUMBER = new IElementType("NUMBER", LivePreviewLanguage.BASE_INSTANCE);
public static final IElementType KEYWORD = new IElementType("KEYWORD", LivePreviewLanguage.BASE_INSTANCE);
private static final TokenSet ourWhiteSpaceTokens = TokenSet.create(TokenType.WHITE_SPACE);
private static final TokenSet ourCommentTokens = TokenSet.create(COMMENT);
private static final TokenSet ourStringLiteralElements = TokenSet.create(STRING);
private final LivePreviewLanguage myLanguage;
private final IFileElementType myFileElementType;
public LivePreviewParserDefinition(LivePreviewLanguage language) {
myLanguage = language;
myFileElementType = new IFileElementType(myLanguage); // todo do not register
}
public LivePreviewLanguage getLanguage() {
return myLanguage;
}
@NotNull
@Override
public Lexer createLexer(Project project) {
return new LivePreviewLexer(project, myLanguage);
}
@Override
public PsiParser createParser(Project project) {
return new LivePreviewParser(project, myLanguage);
}
@Override
public IFileElementType getFileNodeType() {
return myFileElementType;
}
@NotNull
@Override
public TokenSet getWhitespaceTokens() {
return ourWhiteSpaceTokens;
}
@NotNull
@Override
public TokenSet getCommentTokens() {
return ourCommentTokens;
}
@NotNull
@Override
public TokenSet getStringLiteralElements() {
return ourStringLiteralElements;
}
@NotNull
@Override
public PsiElement createElement(ASTNode node) {
return new ASTWrapperPsiElement(node);
}
@Override
public PsiFile createFile(FileViewProvider viewProvider) {
return new PsiFileBase(viewProvider, myLanguage) {
@NotNull
@Override
public FileType getFileType() {
return LivePreviewFileType.INSTANCE;
}
};
}
@Override
public SpaceRequirements spaceExistanceTypeBetweenTokens(ASTNode left, ASTNode right) {
return SpaceRequirements.MAY;
}
}