001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.lang.parsing;
018
019import com.intellij.lang.ASTNode;
020import com.intellij.lang.PsiBuilder;
021import com.intellij.lang.PsiParser;
022import com.intellij.openapi.project.Project;
023import com.intellij.psi.PsiFile;
024import com.intellij.psi.tree.IElementType;
025import org.jetbrains.annotations.NotNull;
026
027public class JetParser implements PsiParser {
028
029    public static final String STD_SCRIPT_EXT = "." + JetParserDefinition.KTSCRIPT_FILE_SUFFIX;
030    private final JetScriptDefinitionProvider scriptDefinitionProvider;
031
032    public JetParser(Project project) {
033        scriptDefinitionProvider = JetScriptDefinitionProvider.getInstance(project);
034    }
035
036    @Override
037    @NotNull
038    public ASTNode parse(IElementType iElementType, PsiBuilder psiBuilder) {
039        throw new IllegalStateException("use another parse");
040    }
041
042    // we need this method because we need psiFile
043    @NotNull
044    public ASTNode parse(IElementType iElementType, PsiBuilder psiBuilder, PsiFile psiFile) {
045        JetParsing jetParsing = JetParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
046        if (scriptDefinitionProvider != null && scriptDefinitionProvider.isScript(psiFile) || psiFile.getName().endsWith(STD_SCRIPT_EXT)) {
047            jetParsing.parseScript();
048        }
049        else {
050            jetParsing.parseFile();
051        }
052        return psiBuilder.getTreeBuilt();
053    }
054
055    @NotNull
056    public static ASTNode parseTypeCodeFragment(PsiBuilder psiBuilder) {
057        JetParsing jetParsing = JetParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
058        jetParsing.parseTypeCodeFragment();
059        return psiBuilder.getTreeBuilt();
060    }
061
062    @NotNull
063    public static ASTNode parseExpressionCodeFragment(PsiBuilder psiBuilder) {
064        JetParsing jetParsing = JetParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
065        jetParsing.parseExpressionCodeFragment();
066        return psiBuilder.getTreeBuilt();
067    }
068}