| /* |
| * Copyright 2000-2013 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.validation; |
| |
| import com.intellij.lang.annotation.AnnotationHolder; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.jetbrains.python.PyBundle; |
| import com.jetbrains.python.psi.*; |
| import com.jetbrains.python.psi.impl.ParamHelper; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Annotates errors in 'global' statements. |
| */ |
| public class GlobalAnnotator extends PyAnnotator { |
| @Override |
| public void visitPyGlobalStatement(final PyGlobalStatement node) { |
| PyFunction function = PsiTreeUtil.getParentOfType(node, PyFunction.class); |
| if (function != null) { |
| PyParameterList paramList = function.getParameterList(); |
| // collect param names |
| final Set<String> paramNames = new HashSet<String>(); |
| |
| ParamHelper.walkDownParamArray( |
| paramList.getParameters(), |
| new ParamHelper.ParamVisitor() { |
| @Override |
| public void visitNamedParameter(PyNamedParameter param, boolean first, boolean last) { |
| paramNames.add(param.getName()); |
| } |
| } |
| ); |
| |
| // check globals |
| final AnnotationHolder holder = getHolder(); |
| for (PyTargetExpression expr : node.getGlobals()) { |
| final String expr_name = expr.getReferencedName(); |
| if (paramNames.contains(expr_name)) { |
| holder.createErrorAnnotation(expr.getTextRange(), PyBundle.message("ANN.$0.both.global.and.param", expr_name)); |
| } |
| } |
| } |
| } |
| } |