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    import org.jetbrains.kotlin.script.KotlinScriptDefinitionProvider;
027    
028    public class KotlinParser implements PsiParser {
029    
030        private final KotlinScriptDefinitionProvider scriptDefinitionProvider;
031    
032        public KotlinParser(Project project) {
033            scriptDefinitionProvider = KotlinScriptDefinitionProvider.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            KotlinParsing jetParsing = KotlinParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
046            if (scriptDefinitionProvider != null && scriptDefinitionProvider.isScript(psiFile)
047                || psiFile.getName().endsWith(KotlinParserDefinition.STD_SCRIPT_EXT)) {
048                jetParsing.parseScript();
049            }
050            else {
051                jetParsing.parseFile();
052            }
053            return psiBuilder.getTreeBuilt();
054        }
055    
056        @NotNull
057        public static ASTNode parseTypeCodeFragment(PsiBuilder psiBuilder) {
058            KotlinParsing jetParsing = KotlinParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
059            jetParsing.parseTypeCodeFragment();
060            return psiBuilder.getTreeBuilt();
061        }
062    
063        @NotNull
064        public static ASTNode parseExpressionCodeFragment(PsiBuilder psiBuilder) {
065            KotlinParsing jetParsing = KotlinParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
066            jetParsing.parseExpressionCodeFragment();
067            return psiBuilder.getTreeBuilt();
068        }
069    
070        @NotNull
071        public static ASTNode parseBlockCodeFragment(PsiBuilder psiBuilder) {
072            KotlinParsing jetParsing = KotlinParsing.createForTopLevel(new SemanticWhitespaceAwarePsiBuilderImpl(psiBuilder));
073            jetParsing.parseBlockCodeFragment();
074            return psiBuilder.getTreeBuilt();
075        }
076    }