| /* |
| * 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.completion; |
| |
| import static com.intellij.patterns.PlatformPatterns.psiComment; |
| import static com.intellij.patterns.PlatformPatterns.psiElement; |
| |
| import com.google.idea.blaze.base.lang.buildfile.language.BuildFileLanguage; |
| import com.google.idea.blaze.base.lang.buildfile.language.semantics.BuiltInNamesProvider; |
| import com.google.idea.blaze.base.lang.buildfile.psi.ReferenceExpression; |
| import com.intellij.codeInsight.completion.AutoCompletionContext; |
| import com.intellij.codeInsight.completion.AutoCompletionDecision; |
| import com.intellij.codeInsight.completion.CompletionContributor; |
| import com.intellij.codeInsight.completion.CompletionParameters; |
| import com.intellij.codeInsight.completion.CompletionProvider; |
| import com.intellij.codeInsight.completion.CompletionResultSet; |
| import com.intellij.codeInsight.completion.CompletionType; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.util.ProcessingContext; |
| |
| /** Completes built-in blaze global symbols. */ |
| public class BuiltInSymbolCompletionContributor extends CompletionContributor { |
| |
| @Override |
| public AutoCompletionDecision handleAutoCompletionPossibility(AutoCompletionContext context) { |
| // auto-insert the obvious only case; else show other cases. |
| final LookupElement[] items = context.getItems(); |
| if (items.length == 1) { |
| return AutoCompletionDecision.insertItem(items[0]); |
| } |
| return AutoCompletionDecision.SHOW_LOOKUP; |
| } |
| |
| public BuiltInSymbolCompletionContributor() { |
| extend( |
| CompletionType.BASIC, |
| psiElement() |
| .withLanguage(BuildFileLanguage.INSTANCE) |
| .andNot(psiComment()) |
| .withParent(ReferenceExpression.class), |
| new CompletionProvider<CompletionParameters>() { |
| @Override |
| protected void addCompletions( |
| CompletionParameters parameters, |
| ProcessingContext context, |
| CompletionResultSet result) { |
| for (String symbol : BuiltInNamesProvider.GLOBALS) { |
| result.addElement(LookupElementBuilder.create(symbol)); |
| } |
| } |
| }); |
| } |
| } |