1 files changed, 78 insertions, 0 deletions
diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/classlayout/ClassNameDiffersFromFileNameInspectionBase.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/classlayout/ClassNameDiffersFromFileNameInspectionBase.java
new file mode 100644
index 000000000000..3726e6aa38ea
--- /dev/null
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/classlayout/ClassNameDiffersFromFileNameInspectionBase.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2000-2013 JetBrains s.r.o.
+ *
+ * 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.classlayout;
+
+import com.intellij.psi.PsiClass;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiJavaFile;
+import com.intellij.psi.util.FileTypeUtils;
+import com.siyeh.InspectionGadgetsBundle;
+import com.siyeh.ig.BaseInspection;
+import com.siyeh.ig.BaseInspectionVisitor;
+import org.jetbrains.annotations.NotNull;
+
+public class ClassNameDiffersFromFileNameInspectionBase extends BaseInspection {
+  @Override
+  @NotNull
+  public String getDisplayName() {
+    return InspectionGadgetsBundle.message(
+      "class.name.differs.from.file.name.display.name");
+  }
+
+  @Override
+  @NotNull
+  protected String buildErrorString(Object... infos) {
+    return InspectionGadgetsBundle.message(
+      "class.name.differs.from.file.name.problem.descriptor");
+  }
+
+  @Override
+  public BaseInspectionVisitor buildVisitor() {
+    return new ClassNameDiffersFromFileNameVisitor();
+  }
+
+  private static class ClassNameDiffersFromFileNameVisitor
+    extends BaseInspectionVisitor {
+
+    @Override
+    public void visitClass(@NotNull PsiClass aClass) {
+      // no call to super, so that it doesn't drill down to inner classes
+      if (FileTypeUtils.isInServerPageFile(aClass)) {
+        return;
+      }
+      final PsiElement parent = aClass.getParent();
+      if (!(parent instanceof PsiJavaFile)) {
+        return;
+      }
+      final PsiJavaFile file = (PsiJavaFile)parent;
+      final String className = aClass.getName();
+      if (className == null) {
+        return;
+      }
+      final String fileName = file.getName();
+      final int prefixIndex = fileName.indexOf((int)'.');
+      if (prefixIndex < 0) {
+        return;
+      }
+      final String filenameWithoutPrefix =
+        fileName.substring(0, prefixIndex);
+      if (className.equals(filenameWithoutPrefix)) {
+        return;
+      }
+      registerClassError(aClass, file);
+    }
+  }
+}