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/*
* Copyright 2003-2010 Dave Griffith, Bas Leijdekkers
*
* 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.siyeh.ig.assignment;
import com.intellij.psi.*;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.InspectionGadgetsFix;
import com.siyeh.ig.fixes.ExtractParameterAsLocalVariableFix;
import com.siyeh.ig.psiutils.WellFormednessUtils;
import org.jetbrains.annotations.NotNull;
public class AssignmentToCatchBlockParameterInspection
extends BaseInspection {
@Override
@NotNull
public String getDisplayName() {
return InspectionGadgetsBundle.message(
"assignment.to.catch.block.parameter.display.name");
}
@Override
@NotNull
public String buildErrorString(Object... infos) {
return InspectionGadgetsBundle.message(
"assignment.to.catch.block.parameter.problem.descriptor");
}
@Override
protected InspectionGadgetsFix buildFix(Object... infos) {
return new ExtractParameterAsLocalVariableFix();
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new AssignmentToCatchBlockParameterVisitor();
}
private static class AssignmentToCatchBlockParameterVisitor
extends BaseInspectionVisitor {
@Override
public void visitAssignmentExpression(
@NotNull PsiAssignmentExpression expression) {
super.visitAssignmentExpression(expression);
if (!WellFormednessUtils.isWellFormed(expression)) {
return;
}
final PsiExpression lhs = expression.getLExpression();
if (!(lhs instanceof PsiReferenceExpression)) {
return;
}
final PsiReferenceExpression reference =
(PsiReferenceExpression)lhs;
final PsiElement variable = reference.resolve();
if (!(variable instanceof PsiParameter)) {
return;
}
final PsiParameter parameter = (PsiParameter)variable;
final PsiElement declarationScope = parameter.getDeclarationScope();
if (!(declarationScope instanceof PsiCatchSection)) {
return;
}
registerError(lhs);
}
}
}
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