001    /*
002     * Copyright 2010-2015 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    
017    package org.jetbrains.kotlin.parsing;
018    
019    import com.intellij.lang.ASTNode;
020    import com.intellij.lang.PsiBuilder;
021    import com.intellij.lang.PsiParser;
022    import com.intellij.openapi.project.Project;
023    import com.intellij.psi.PsiFile;
024    import com.intellij.psi.tree.IElementType;
025    import org.jetbrains.annotations.NotNull;
026    
027    public class JetParser implements PsiParser {
028    
029        private final JetScriptDefinitionProvider scriptDefinitionProvider;
030    
031        public JetParser(Project project) {
032            scriptDefinitionProvider = JetScriptDefinitionProvider.getInstance(project);
033        }
034    
035        @Override
036        @NotNull
037        public ASTNode parse(IElementType iElementType, PsiBuilder psiBuilder) {
038            throw new IllegalStateException("use another parse");
039        }
040    
041        // we need this method because we need psiFile
042        @NotNull
043        public ASTNode parse(IElementType iElementType, PsiBuilder psiBuilder, PsiFile psiFile) {
044            JetParsing jetParsing = JetParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
045            if (scriptDefinitionProvider != null && scriptDefinitionProvider.isScript(psiFile)
046                || psiFile.getName().endsWith(JetParserDefinition.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    
069        @NotNull
070        public static ASTNode parseBlockCodeFragment(PsiBuilder psiBuilder) {
071            JetParsing jetParsing = JetParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
072            jetParsing.parseBlockCodeFragment();
073            return psiBuilder.getTreeBuilt();
074        }
075    }