plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/classlayout/ConstantDeclaredInInterfaceInspection.java

/*
 * Copyright 2003-2007 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.classlayout;

import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiField;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import org.jetbrains.annotations.NotNull;

public class ConstantDeclaredInInterfaceInspection extends BaseInspection {

  @Override
  @NotNull
  public String getDisplayName() {
    return InspectionGadgetsBundle.message(
      "constant.declared.in.interface.display.name");
  }

  @Override
  @NotNull
  protected String buildErrorString(Object... infos) {
    return InspectionGadgetsBundle.message(
      "constant.declared.in.interface.problem.descriptor");
  }

  @Override
  public BaseInspectionVisitor buildVisitor() {
    return new ConstantDeclaredInInterfaceVisitor();
  }

  private static class ConstantDeclaredInInterfaceVisitor
    extends BaseInspectionVisitor {

    @Override
    public void visitField(@NotNull PsiField field) {
      //no call to super, so we don't drill into anonymous classes
      final PsiClass containingClass = field.getContainingClass();
      if (containingClass == null) {
        return;
      }
      if (!containingClass.isInterface() &&
          !containingClass.isAnnotationType()) {
        return;
      }
      registerFieldError(field);
    }
  }
}