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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.validity;
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.codeInspection.utils.ControlFlowUtils;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrStatement;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlock;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrOpenBlock;
public class GroovyUnreachableStatementInspection extends BaseInspection {
@Override
@Nls
@NotNull
public String getGroupDisplayName() {
return VALIDITY_ISSUES;
}
@Override
@Nls
@NotNull
public String getDisplayName() {
return "Unreachable Statement";
}
@Override
@Nullable
protected String buildErrorString(Object... args) {
return "Unreachable statement #loc";
}
@Override
public boolean isEnabledByDefault() {
return true;
}
@NotNull
@Override
public BaseInspectionVisitor buildVisitor() {
return new Visitor();
}
private static class Visitor extends BaseInspectionVisitor {
@Override
public void visitClosure(GrClosableBlock closure) {
super.visitClosure(closure);
GrStatement[] statements = closure.getStatements();
for (int i = 0; i < statements.length - 1; i++) {
checkPair(statements[i], statements[i+1]);
}
}
@Override
public void visitOpenBlock(GrOpenBlock block) {
super.visitOpenBlock(block);
GrStatement[] statements = block.getStatements();
for (int i = 0; i < statements.length - 1; i++) {
checkPair(statements[i], statements[i+1]);
}
}
private void checkPair(GrStatement prev, GrStatement statement) {
if (!ControlFlowUtils.statementMayCompleteNormally(prev)) {
registerError(statement);
}
}
}
}
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