001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.lang.resolve.java;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.jet.lang.descriptors.*;
021    
022    import java.util.ArrayList;
023    import java.util.List;
024    
025    public class TypeVariableResolvers {
026    
027        @NotNull
028        public static List<TypeParameterDescriptor> getTypeParameterDescriptors(@NotNull ClassOrNamespaceDescriptor clazz) {
029            if (clazz instanceof ClassDescriptor) {
030                return ((ClassDescriptor) clazz).getTypeConstructor().getParameters();
031            }
032            else {
033                return new ArrayList<TypeParameterDescriptor>(0);
034            }
035        }
036    
037        @NotNull
038        public static TypeVariableResolver classTypeVariableResolver(@NotNull ClassOrNamespaceDescriptor clazz, @NotNull String context) {
039            return typeVariableResolverFromTypeParameters(getTypeParameterDescriptors(clazz), clazz, context);
040        }
041    
042        @NotNull
043        public static TypeVariableResolver typeVariableResolverFromTypeParameters(
044                @NotNull List<TypeParameterDescriptor> typeParameters, @NotNull DeclarationDescriptor owner, @NotNull String context) {
045    
046            return new TypeVariableResolverFromTypeDescriptors(typeParameters, owner, context);
047        }
048        
049    }