| /* |
| * Copyright 2007-2008 Dave Griffith |
| * |
| * 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 org.jetbrains.plugins.groovy.codeInspection.assignment; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.tree.IElementType; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspection; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspectionVisitor; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.clauses.GrForClause; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrAssignmentExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrUnaryExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.params.GrParameter; |
| |
| public class GroovyAssignmentToMethodParameterInspection extends BaseInspection { |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getGroupDisplayName() { |
| return ASSIGNMENT_ISSUES; |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return "Assignment to method parameter"; |
| } |
| |
| @Override |
| @Nullable |
| protected String buildErrorString(Object... args) { |
| return "Assignment to method parameter '#ref' #loc"; |
| |
| } |
| |
| @Override |
| @NotNull |
| public BaseInspectionVisitor buildVisitor() { |
| return new Visitor(); |
| } |
| |
| private static class Visitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitAssignmentExpression(GrAssignmentExpression expr) { |
| super.visitAssignmentExpression(expr); |
| |
| check(expr.getLValue()); |
| } |
| |
| private void check(@Nullable GrExpression lhs) { |
| if (!(lhs instanceof GrReferenceExpression)) { |
| return; |
| } |
| final PsiElement referent = ((PsiReference) lhs).resolve(); |
| if (referent == null) { |
| return; |
| } |
| if (!(referent instanceof GrParameter)) { |
| return; |
| } |
| if (referent.getParent() instanceof GrForClause) { |
| return; |
| } |
| registerError(lhs); |
| } |
| |
| @Override |
| public void visitUnaryExpression(GrUnaryExpression expression) { |
| super.visitUnaryExpression(expression); |
| |
| final IElementType op = expression.getOperationTokenType(); |
| if (op == GroovyTokenTypes.mINC || op == GroovyTokenTypes.mDEC) { |
| check(expression.getOperand()); |
| } |
| } |
| } |
| } |