com.oracle.truffle.nfi.impl.NativePointerMessageResolution Maven / Gradle / Ivy

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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.truffle.nfi.impl;

import com.oracle.truffle.api.interop.ArityException;
import com.oracle.truffle.api.interop.CanResolve;
import com.oracle.truffle.api.interop.KeyInfo;
import com.oracle.truffle.api.interop.MessageResolution;
import com.oracle.truffle.api.interop.Resolve;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.nfi.impl.BindSignatureNodeFactory.PointerBindSignatureNodeGen;
import com.oracle.truffle.nfi.impl.TypeConversion.AsStringNode;
import com.oracle.truffle.nfi.impl.TypeConversionFactory.AsStringNodeGen;

@MessageResolution(receiverType = NativePointer.class)
class NativePointerMessageResolution {

    @Resolve(message = "INVOKE")
    abstract static class BindNode extends Node {

        @Child protected BindSignatureNode bind = PointerBindSignatureNodeGen.create();

        public TruffleObject access(NativePointer receiver, String method, Object[] args) {
            if (!"bind".equals(method)) {
                throw UnknownIdentifierException.raise(method);
            }
            if (args.length != 1) {
                throw ArityException.raise(1, args.length);
            }

            return bind.execute(receiver, args[0]);
        }
    }

    @Resolve(message = "IS_POINTER")
    abstract static class IsNativePointerNode extends Node {

        public boolean access(@SuppressWarnings("unused") NativePointer receiver) {
            return true;
        }
    }

    @Resolve(message = "AS_POINTER")
    abstract static class AsNativePointerNode extends Node {

        public long access(NativePointer receiver) {
            return receiver.nativePointer;
        }
    }

    @Resolve(message = "TO_NATIVE")
    abstract static class ToNativePointerNode extends Node {

        public NativePointer access(NativePointer receiver) {
            return receiver;
        }
    }

    @Resolve(message = "UNBOX")
    abstract static class UnboxNativePointerNode extends Node {

        public long access(NativePointer receiver) {
            return receiver.nativePointer;
        }
    }

    @Resolve(message = "IS_BOXED")
    abstract static class IsBoxedNativePointerNode extends Node {

        @SuppressWarnings("unused")
        public boolean access(NativePointer receiver) {
            return true;
        }
    }

    @Resolve(message = "IS_NULL")
    abstract static class IsNullNativePointerNode extends Node {

        public boolean access(NativePointer receiver) {
            return receiver.nativePointer == 0;
        }
    }

    @Resolve(message = "KEYS")
    abstract static class NativePointerKeysNode extends Node {

        private static final KeysArray KEYS = new KeysArray(new String[]{"bind"});

        @SuppressWarnings("unused")
        public TruffleObject access(NativePointer receiver) {
            return KEYS;
        }
    }

    @Resolve(message = "KEY_INFO")
    abstract static class NativePointerKeyInfoNode extends Node {

        @Child private AsStringNode asString = AsStringNodeGen.create(true);

        @SuppressWarnings("unused")
        public int access(NativePointer receiver, Object arg) {
            String identifier = asString.execute(arg);
            if ("bind".equals(identifier)) {
                return KeyInfo.INVOCABLE;
            } else {
                return KeyInfo.NONE;
            }
        }
    }

    @CanResolve
    abstract static class CanResolveNativePointerNode extends Node {

        public boolean test(TruffleObject receiver) {
            return receiver instanceof NativePointer;
        }
    }
}