/*
 * Copyright 2012-2014 Sergey Ignatov
 *
 * 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.intellij.erlang.inspection;

import com.intellij.codeInspection.LocalInspectionToolSession;
import com.intellij.codeInspection.ProblemsHolder;
import com.intellij.psi.PsiReference;
import org.intellij.erlang.psi.ErlangMacros;
import org.intellij.erlang.psi.ErlangMacrosName;
import org.intellij.erlang.psi.ErlangVisitor;
import org.intellij.erlang.psi.impl.ErlangPsiImplUtil;
import org.intellij.erlang.quickfixes.ErlangIntroduceMacroQuickFix;
import org.jetbrains.annotations.NotNull;

public class ErlangUnresolvedMacrosInspection extends ErlangInspectionBase {
  @NotNull
  @Override
  protected ErlangVisitor buildErlangVisitor(@NotNull final ProblemsHolder holder, @NotNull LocalInspectionToolSession session) {
    return new ErlangVisitor() {
      @Override
      public void visitMacros(@NotNull ErlangMacros o) {
        ErlangMacrosName macrosName = o.getMacrosName();
        if (macrosName == null || ErlangPsiImplUtil.KNOWN_MACROS.contains(macrosName.getText())) return;

        PsiReference reference = o.getReference();
        if (reference != null && reference.resolve() == null) {
          registerProblem(holder, o, "Unresolved macros " + "'" + o.getText() + "'", new ErlangIntroduceMacroQuickFix());
        }
      }
    };
  }
}