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A packaging of the IntelliJ Community Edition groovy-psi library. This is release number 1 of trunk branch 142.

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/*
 * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.lang.psi.expectedTypes;

import com.intellij.psi.PsiClassType;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiType;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.TypesUtil;

/**
 * @author ven
 */
public  class SubtypeConstraint extends TypeConstraint {
  private final PsiType myDefaultType;

  protected SubtypeConstraint(@NotNull PsiType type, @NotNull PsiType defaultType) {
    super(type);
    myDefaultType = defaultType;
  }

  @Override
  public boolean satisfied(PsiType type, @NotNull PsiElement context){
    return TypesUtil.isAssignableByMethodCallConversion(getType(), type, context);
  }

  @Override
  @NotNull
  public PsiType getDefaultType() {
    return myDefaultType;
  }

  public static SubtypeConstraint create(@NotNull PsiType type) {
    return new SubtypeConstraint(type, type);
  }

  public static SubtypeConstraint create(String fqName, PsiElement context) {
    PsiClassType type = TypesUtil.createType(fqName, context);
    return new SubtypeConstraint(type, type);
  }
}