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.types;
018    
019    import kotlin.jvm.KotlinSignature;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.annotations.ReadOnly;
023    import org.jetbrains.jet.lang.descriptors.annotations.Annotated;
024    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
025    import org.jetbrains.jet.lang.types.checker.JetTypeChecker;
026    
027    import java.util.List;
028    
029    /**
030     * @see JetTypeChecker#isSubtypeOf(JetType, JetType)
031     */
032    public interface JetType extends Annotated {
033        @NotNull TypeConstructor getConstructor();
034    
035        @NotNull
036        @ReadOnly
037        List<TypeProjection> getArguments();
038    
039        boolean isNullable();
040    
041        @NotNull
042        JetScope getMemberScope();
043    
044        boolean isError();
045    
046        @Override
047        boolean equals(Object other);
048    
049        @KotlinSignature("fun <T : TypeCapability> getCapability(capabilityClass: Class<T>): T?")
050        @Nullable
051        <T extends TypeCapability> T getCapability(@NotNull Class<T> capabilityClass);
052    }