/*
 * Copyright 2003-2015 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.bugs;

import com.intellij.psi.CommonClassNames;
import com.intellij.psi.PsiMethod;
import com.intellij.psi.PsiMethodCallExpression;
import com.siyeh.HardcodedMethodConstants;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.psiutils.IteratorUtils;
import com.siyeh.ig.psiutils.MethodUtils;
import org.jetbrains.annotations.NotNull;

public final class IteratorHasNextCallsIteratorNextInspection
  extends BaseInspection {

  @Override
  public @NotNull String buildErrorString(Object... infos) {
    String methodName = (String)infos[0];
    return InspectionGadgetsBundle.message(
      "iterator.hasnext.which.calls.next.problem.descriptor", methodName);
  }

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

  private static class IteratorHasNextCallsIteratorNext extends BaseInspectionVisitor {

    @Override
    public void visitMethod(@NotNull PsiMethod method) {
      // note: no call to super
      if (!MethodUtils.methodMatches(method, CommonClassNames.JAVA_UTIL_ITERATOR, null, HardcodedMethodConstants.HAS_NEXT) &&
          !MethodUtils.methodMatches(method, "java.util.ListIterator", null, "hasPrevious")) {
        return;
      }
      PsiMethodCallExpression call = IteratorUtils.getIllegalCallInHasNext(method, null, true);
      if (call == null) {
        return;
      }
      registerMethodCallError(call, method.getName());
    }
  }
}