| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.google.idea.blaze.base.lang.buildfile.references; |
| |
| import com.google.common.collect.Lists; |
| import com.google.idea.blaze.base.lang.buildfile.completion.NamedBuildLookupElement; |
| import com.google.idea.blaze.base.lang.buildfile.psi.*; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReferenceBase; |
| import com.intellij.psi.util.PsiTreeUtil; |
| |
| import javax.annotation.Nullable; |
| import java.util.List; |
| |
| /** |
| * Only keyword arguments resolve, but we include this class for code completion purposes. |
| * As the user is typing a keyword arg, they'll start with a positional arg element. |
| */ |
| public class ArgumentReference<T extends Argument> extends PsiReferenceBase<T> { |
| |
| public ArgumentReference(T element, TextRange rangeInElement, boolean soft) { |
| super(element, rangeInElement, false); |
| } |
| |
| @Nullable |
| protected FunctionStatement resolveFunction() { |
| FuncallExpression call = PsiTreeUtil.getParentOfType(myElement, FuncallExpression.class); |
| if (call == null) { |
| return null; |
| } |
| PsiElement callee = call.getReferencedElement(); |
| return callee instanceof FunctionStatement ? (FunctionStatement) callee : null; |
| } |
| |
| @Nullable |
| @Override |
| public PsiElement resolve() { |
| return null; |
| } |
| |
| @Override |
| public Object[] getVariants() { |
| FunctionStatement function = resolveFunction(); |
| if (function == null) { |
| return EMPTY_ARRAY; |
| } |
| List<LookupElement> params = Lists.newArrayList(); |
| for (Parameter param : function.getParameters()) { |
| params.add(new NamedBuildLookupElement(param, QuoteType.NoQuotes)); |
| } |
| return params.toArray(); |
| } |
| } |