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.PsiElement;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    import org.jetbrains.kotlin.psi.stubs.KotlinPlaceHolderStub;
024    import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes;
025    
026    import java.util.List;
027    
028    public class KtParameterList extends KtElementImplStub<KotlinPlaceHolderStub<KtParameterList>> {
029        public KtParameterList(@NotNull ASTNode node) {
030            super(node);
031        }
032    
033        public KtParameterList(@NotNull KotlinPlaceHolderStub<KtParameterList> stub) {
034            super(stub, KtStubElementTypes.VALUE_PARAMETER_LIST);
035        }
036    
037        @Override
038        public <R, D> R accept(@NotNull KtVisitor<R, D> visitor, D data) {
039            return visitor.visitParameterList(this, data);
040        }
041    
042        @Override
043        public PsiElement getParent() {
044            KotlinPlaceHolderStub<KtParameterList> stub = getStub();
045            return stub != null ? stub.getParentStub().getPsi() : super.getParent();
046        }
047    
048        @NotNull
049        public List<KtParameter> getParameters() {
050            return getStubOrPsiChildrenAsList(KtStubElementTypes.VALUE_PARAMETER);
051        }
052    
053        @NotNull
054        public KtParameter addParameter(@NotNull KtParameter parameter) {
055            return EditCommaSeparatedListHelper.INSTANCE.addItem(this, getParameters(), parameter);
056        }
057    
058        @NotNull
059        public KtParameter addParameterBefore(@NotNull KtParameter parameter, @Nullable KtParameter anchor) {
060            return EditCommaSeparatedListHelper.INSTANCE.addItemBefore(this, getParameters(), parameter, anchor);
061        }
062    
063        public void removeParameter(@NotNull KtParameter parameter) {
064            EditCommaSeparatedListHelper.INSTANCE.removeItem(parameter);
065        }
066    
067        public void removeParameter(int index) {
068            removeParameter(getParameters().get(index));
069        }
070    
071        public KtFunction getOwnerFunction() {
072            PsiElement parent = getParentByStub();
073            if (!(parent instanceof KtFunction)) return null;
074            return (KtFunction) parent;
075        }
076    }