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/*
* 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.exception;
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.psi.api.statements.GrStatement;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrTryCatchStatement;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrOpenBlock;
public class GroovyEmptyTryBlockInspection extends BaseInspection {
@Override
@Nls
@NotNull
public String getGroupDisplayName() {
return ERROR_HANDLING;
}
@Override
@Nls
@NotNull
public String getDisplayName() {
return "Empty 'try' block";
}
@Override
@Nullable
protected String buildErrorString(Object... args) {
return "Empty '#ref' block #loc";
}
@Override
public BaseInspectionVisitor buildVisitor() {
return new Visitor();
}
private static class Visitor extends BaseInspectionVisitor {
@Override
public void visitTryStatement(GrTryCatchStatement tryCatchStatement) {
super.visitTryStatement(tryCatchStatement);
final GrOpenBlock body = tryCatchStatement.getTryBlock();
if (body == null || !isEmpty(body)) {
return;
}
registerError(tryCatchStatement.getFirstChild());
}
private static boolean isEmpty(GrOpenBlock body) {
final GrStatement[] statements = body.getStatements();
return statements.length == 0;
}
}
}
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