/*
* Copyright 2013-2016 consulo.io
*
* 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 consulo.cgshader;
import org.jetbrains.annotations.NotNull;
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.PsiBuilder;
import com.intellij.lang.PsiParser;
import com.intellij.lexer.Lexer;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.IFileElementType;
import com.intellij.psi.tree.TokenSet;
import consulo.cgshader.lexer.CGLexer;
import consulo.cgshader.lexer.CGTokens;
import consulo.lang.LanguageVersion;
/**
* @author VISTALL
* @since 11.10.2015
*/
public class CGParserDefinition implements ParserDefinition
{
private static final IFileElementType FILE_ELEMENT_TYPE = new IFileElementType(CGLanguage.INSTANCE);
@NotNull
@Override
public Lexer createLexer(@NotNull LanguageVersion languageVersion)
{
return new CGLexer();
}
@NotNull
@Override
public PsiParser createParser(@NotNull LanguageVersion languageVersion)
{
return new PsiParser()
{
@NotNull
@Override
public ASTNode parse(@NotNull IElementType root, @NotNull PsiBuilder builder, @NotNull LanguageVersion languageVersion)
{
PsiBuilder.Marker mark = builder.mark();
while(!builder.eof())
{
builder.advanceLexer();
}
mark.done(root);
return builder.getTreeBuilt();
}
};
}
@NotNull
@Override
public IFileElementType getFileNodeType()
{
return FILE_ELEMENT_TYPE;
}
@NotNull
@Override
public TokenSet getWhitespaceTokens(@NotNull LanguageVersion languageVersion)
{
return TokenSet.create(CGTokens.WHITE_SPACE);
}
@NotNull
@Override
public TokenSet getCommentTokens(@NotNull LanguageVersion languageVersion)
{
return TokenSet.create(CGTokens.LINE_COMMENT, CGTokens.BLOCK_COMMENT);
}
@NotNull
@Override
public TokenSet getStringLiteralElements(@NotNull LanguageVersion languageVersion)
{
return TokenSet.create(CGTokens.STRING_LITERAL);
}
@NotNull
@Override
public PsiElement createElement(ASTNode node)
{
return new ASTWrapperPsiElement(node);
}
@Override
public PsiFile createFile(FileViewProvider viewProvider)
{
return new PsiFileBase(viewProvider, CGLanguage.INSTANCE)
{
};
}
@NotNull
@Override
public SpaceRequirements spaceExistanceTypeBetweenTokens(ASTNode left, ASTNode right)
{
return SpaceRequirements.MAY;
}
}