org.graalvm.polyglot.impl.UnnamedToModuleByteSequenceGen Maven / Gradle / Ivy

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package org.graalvm.polyglot.impl;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.invoke.MethodType;
import java.util.List;
import java.util.Objects;
import java.util.stream.IntStream;
import org.graalvm.polyglot.impl.UnnamedToModuleBridge.UnnamedToModuleByteSequence;
import org.graalvm.polyglot.io.ByteSequence;

/**
 * Generated code used for Truffle unnamed to named module bridge.
 * This code allows polyglot on the classpath to delegate to polyglot on the module-path.
 * This code is generated by the polyglot annotation processor.asdf
 */
 final class UnnamedToModuleByteSequenceGen extends UnnamedToModuleByteSequence {

    private static final Handles HANDLES;
    static {
        Lookup lookup = methodHandleLookup();
        if (lookup != null) {
            try {
                HANDLES = new Handles(lookup);
            } catch (ReflectiveOperationException e) {
                throw new InternalError("Failed to initialize method handles for module bridge.", e);
            }
        } else {
            HANDLES = null;
        }
    }

    final Object receiver;

    public UnnamedToModuleByteSequenceGen(Object receiver) {
        this.receiver = Objects.requireNonNull(receiver);
    }

    @Override
    public byte byteAt(int index_) {
        try {
            byte result = (byte) HANDLES.byteAt_.invoke(receiver, index_);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public IntStream bytes() {
        try {
            IntStream result = (IntStream) HANDLES.bytes_.invoke(receiver);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public boolean equals(Object obj_) {
        try {
            boolean result = (boolean) HANDLES.equals_.invoke(receiver, obj_);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public int hashCode() {
        try {
            int result = (int) HANDLES.hashCode_.invoke(receiver);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public int length() {
        try {
            int result = (int) HANDLES.length_.invoke(receiver);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public ByteSequence subSequence(int startIndex_, int endIndex_) {
        try {
            Object result = HANDLES.subSequence_.invoke(receiver, startIndex_, endIndex_);
            return UnnamedToModuleByteSequence.fromByteSequence(result);
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public byte[] toByteArray() {
        try {
            byte[] result = (byte[]) HANDLES.toByteArray_.invoke(receiver);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @Override
    public String toString() {
        try {
            String result = (String) HANDLES.toString_.invoke(receiver);
            return result;
        } catch (Throwable t) {
            throw handleException_(t);
        }
    }

    @SuppressWarnings("unchecked")
    private static  RuntimeException handleException_(Throwable t) throws T {
        throw (T)t;
    }

    static final class Handles extends Object {

        private final MethodHandle byteAt_;
        private final MethodHandle bytes_;
        private final MethodHandle equals_;
        private final MethodHandle hashCode_;
        private final MethodHandle length_;
        private final MethodHandle subSequence_;
        private final MethodHandle toByteArray_;
        private final MethodHandle toString_;

        Handles(Lookup lookup) throws ReflectiveOperationException {
            Class typeByteSequence_ = lookup.findClass(ByteSequence.class.getName());
            Class typeByteSequence = lookup.findClass(ByteSequence.class.getName());
            Class typeObject = lookup.findClass(Object.class.getName());
            this.byteAt_ = lookup.findVirtual(typeByteSequence, "byteAt", MethodType.methodType(byte.class, List.of(int.class)));
            this.bytes_ = lookup.findVirtual(typeByteSequence, "bytes", MethodType.methodType(IntStream.class, List.of()));
            this.equals_ = lookup.findVirtual(typeObject, "equals", MethodType.methodType(boolean.class, List.of(Object.class)));
            this.hashCode_ = lookup.findVirtual(typeObject, "hashCode", MethodType.methodType(int.class, List.of()));
            this.length_ = lookup.findVirtual(typeByteSequence, "length", MethodType.methodType(int.class, List.of()));
            this.subSequence_ = lookup.findVirtual(typeByteSequence, "subSequence", MethodType.methodType(typeByteSequence_, List.of(int.class, int.class)));
            this.toByteArray_ = lookup.findVirtual(typeByteSequence, "toByteArray", MethodType.methodType(byte[].class, List.of()));
            this.toString_ = lookup.findVirtual(typeObject, "toString", MethodType.methodType(String.class, List.of()));
        }
    }

}