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.psi;
018    
019    import com.intellij.lang.ASTNode;
020    import com.intellij.psi.util.PsiTreeUtil;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.kotlin.name.FqName;
023    import org.jetbrains.kotlin.psi.stubs.KotlinScriptStub;
024    import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes;
025    import org.jetbrains.kotlin.script.KotlinScriptDefinition;
026    import org.jetbrains.kotlin.script.KotlinScriptDefinitionProviderKt;
027    
028    import java.util.List;
029    
030    public class KtScript extends KtNamedDeclarationStub<KotlinScriptStub> implements KtDeclarationContainer {
031    
032        private KotlinScriptDefinition kotlinScriptDefinitionField = null;
033        private boolean kotlinScriptDefinitionInitialized = false;
034    
035        // make it a simple lazy value after converting to kotlin
036        private KotlinScriptDefinition getKotlinScriptDefinition() {
037            if (!kotlinScriptDefinitionInitialized) {
038                KtFile ktFile = getContainingKtFile();
039                kotlinScriptDefinitionField = KotlinScriptDefinitionProviderKt.getScriptDefinition(ktFile);
040                kotlinScriptDefinitionInitialized = true;
041                assert kotlinScriptDefinitionField != null : "Should not parse a script without definition: " + ktFile.toString();
042            }
043            return kotlinScriptDefinitionField;
044        }
045    
046        public KtScript(@NotNull ASTNode node) {
047            super(node);
048        }
049    
050        public KtScript(@NotNull KotlinScriptStub stub) {
051            super(stub, KtStubElementTypes.SCRIPT);
052        }
053    
054        @NotNull
055        @Override
056        public FqName getFqName() {
057            KotlinScriptStub stub = getStub();
058            if (stub != null) {
059                return stub.getFqName();
060            }
061            KtFile containingKtFile = getContainingKtFile();
062            return containingKtFile.getPackageFqName().child(getKotlinScriptDefinition().getScriptName(this));
063        }
064    
065        @Override
066        public String getName() {
067            return getFqName().shortName().asString();
068        }
069    
070        @NotNull
071        public KtBlockExpression getBlockExpression() {
072            return findNotNullChildByClass(KtBlockExpression.class);
073        }
074    
075        @Override
076        @NotNull
077        public List<KtDeclaration> getDeclarations() {
078            return PsiTreeUtil.getChildrenOfTypeAsList(getBlockExpression(), KtDeclaration.class);
079        }
080    
081        @Override
082        public <R, D> R accept(@NotNull KtVisitor<R, D> visitor, D data) {
083            return visitor.visitScript(this, data);
084        }
085    }