001    /*
002     * Copyright 2010-2015 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.kotlin.types;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.annotations.ReadOnly;
022    import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
023    import org.jetbrains.kotlin.descriptors.ClassifierDescriptor;
024    import org.jetbrains.kotlin.descriptors.TypeParameterDescriptor;
025    import org.jetbrains.kotlin.descriptors.annotations.Annotated;
026    
027    import java.util.Collection;
028    import java.util.List;
029    
030    public interface TypeConstructor extends Annotated {
031        @NotNull
032        @ReadOnly
033        List<TypeParameterDescriptor> getParameters();
034    
035        @NotNull
036        @ReadOnly
037        Collection<KotlinType> getSupertypes();
038    
039        /**
040         * Cannot have subtypes.
041         */
042        boolean isFinal();
043    
044        /**
045         * If the type is non-denotable, it can't be written in code directly, it only can appear internally inside a type checker.
046         * Examples: intersection type or number value type.
047         */
048        boolean isDenotable();
049    
050        @Nullable
051        ClassifierDescriptor getDeclarationDescriptor();
052    
053        @NotNull
054        KotlinBuiltIns getBuiltIns();
055    }