| /* |
| * Copyright 2003-2013 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.controlflow; |
| |
| import com.intellij.codeInspection.ui.SingleIntegerFieldOptionsPanel; |
| import com.intellij.psi.PsiCodeBlock; |
| import com.intellij.psi.PsiSwitchStatement; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.SwitchUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| |
| public class SwitchStatementWithTooFewBranchesInspection extends BaseInspection { |
| |
| private static final int DEFAULT_BRANCH_LIMIT = 2; |
| |
| @SuppressWarnings("PublicField") |
| public int m_limit = DEFAULT_BRANCH_LIMIT; |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("switch.statement.with.too.few.branches.display.name"); |
| } |
| |
| @Override |
| public JComponent createOptionsPanel() { |
| return new SingleIntegerFieldOptionsPanel(InspectionGadgetsBundle.message("switch.statement.with.too.few.branches.min.option"), |
| this, "m_limit"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| final Integer branchCount = (Integer)infos[0]; |
| return InspectionGadgetsBundle.message("switch.statement.with.too.few.branches.problem.descriptor", branchCount); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new SwitchStatementWithTooFewBranchesVisitor(); |
| } |
| |
| private class SwitchStatementWithTooFewBranchesVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitSwitchStatement(@NotNull PsiSwitchStatement statement) { |
| final PsiCodeBlock body = statement.getBody(); |
| if (body == null) { |
| return; |
| } |
| final int branchCount = SwitchUtils.calculateBranchCount(statement); |
| if (branchCount == 0) { |
| return; // // do not warn when no switch branches are present at all |
| } |
| if (branchCount >= m_limit) { |
| return; |
| } |
| registerStatementError(statement, Integer.valueOf(branchCount)); |
| } |
| } |
| } |