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 com.intellij.psi.PsiClass;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.resolve.BindingTrace;
022    import org.jetbrains.jet.lang.resolve.java.kt.PsiAnnotationWithAbiVersion;
023    import org.jetbrains.jet.util.slicedmap.BasicWritableSlice;
024    import org.jetbrains.jet.util.slicedmap.Slices;
025    import org.jetbrains.jet.util.slicedmap.WritableSlice;
026    
027    public class AbiVersionUtil {
028        public static final WritableSlice<PsiClass, Integer> ABI_VERSION_ERRORS =
029                new BasicWritableSlice<PsiClass, Integer>(Slices.ONLY_REWRITE_TO_EQUAL, true);
030        public static final int INVALID_VERSION = -1;
031    
032        public static boolean isAbiVersionCompatible(int abiVersion) {
033            return abiVersion == JvmAbi.VERSION;
034        }
035    
036        public static void checkAbiVersion(
037                @NotNull PsiClass psiClass,
038                @NotNull PsiAnnotationWithAbiVersion versionAnnotation,
039                @NotNull BindingTrace trace) {
040            if (!versionAnnotation.isDefined()) return;
041    
042            int abiVersion = versionAnnotation.getAbiVersion();
043            if (isAbiVersionCompatible(abiVersion)) return;
044    
045            trace.record(ABI_VERSION_ERRORS, psiClass, abiVersion);
046        }
047    }