| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * 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.jetbrains.python.codeInsight.completion; |
| |
| import com.intellij.codeInsight.completion.*; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.patterns.PlatformPatterns; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.filters.ElementFilter; |
| import com.intellij.psi.filters.position.FilterPattern; |
| import com.intellij.util.ProcessingContext; |
| import com.intellij.util.Processor; |
| import com.jetbrains.python.PythonLanguage; |
| import com.jetbrains.python.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author vlan |
| */ |
| public class PyMetaClassCompletionContributor extends CompletionContributor { |
| public PyMetaClassCompletionContributor() { |
| extend(CompletionType.BASIC, |
| PlatformPatterns |
| .psiElement() |
| .withLanguage(PythonLanguage.getInstance()) |
| .withParents(PyReferenceExpression.class, PyExpressionStatement.class, PyStatementList.class, PyClass.class) |
| .and(hasLanguageLevel(new Processor<LanguageLevel>() { |
| @Override |
| public boolean process(LanguageLevel level) { |
| return level.isOlderThan(LanguageLevel.PYTHON30); |
| } |
| })), |
| new CompletionProvider<CompletionParameters>() { |
| @Override |
| protected void addCompletions(@NotNull CompletionParameters parameters, |
| ProcessingContext context, |
| @NotNull CompletionResultSet result) { |
| result.addElement(LookupElementBuilder.create("__metaclass__ = ")); |
| } |
| }); |
| extend(CompletionType.BASIC, |
| PlatformPatterns |
| .psiElement() |
| .withLanguage(PythonLanguage.getInstance()) |
| .withParents(PyReferenceExpression.class, PyArgumentList.class, PyClass.class) |
| .and(hasLanguageLevel(new Processor<LanguageLevel>() { |
| @Override |
| public boolean process(LanguageLevel level) { |
| return level.isAtLeast(LanguageLevel.PYTHON30); |
| } |
| })), |
| new CompletionProvider<CompletionParameters>() { |
| @Override |
| protected void addCompletions(@NotNull CompletionParameters parameters, |
| ProcessingContext context, |
| @NotNull CompletionResultSet result) { |
| result.addElement(LookupElementBuilder.create("metaclass=")); |
| } |
| }); |
| } |
| |
| public static FilterPattern hasLanguageLevel(@NotNull final Processor<LanguageLevel> processor) { |
| return new FilterPattern(new ElementFilter() { |
| @Override |
| public boolean isAcceptable(Object element, @Nullable PsiElement context) { |
| if (element instanceof PsiElement) { |
| return processor.process(LanguageLevel.forElement((PsiElement)element)); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean isClassAcceptable(Class hintClass) { |
| return true; |
| } |
| }); |
| } |
| } |