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 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
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 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
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 *
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package com.oracle.truffle.llvm.nodes.cast;

import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.NodeField;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.llvm.runtime.LLVMIVarBit;
import com.oracle.truffle.llvm.runtime.floating.LLVM80BitFloat;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;

public abstract class LLVMToVarINode extends LLVMExpressionNode {

    @NodeChild(value = "fromNode", type = LLVMExpressionNode.class)
    @NodeField(type = int.class, name = "bits")
    public abstract static class LLVMToIVarNoZeroExtNode extends LLVMToVarINode {

        public abstract int getBits();

        @Specialization
        public LLVMIVarBit executeI8(byte from) {
            return LLVMIVarBit.fromByte(getBits(), from);
        }

        @Specialization
        public LLVMIVarBit executeI16(short from) {
            return LLVMIVarBit.fromShort(getBits(), from);
        }

        @Specialization
        public LLVMIVarBit executeI32(int from) {
            return LLVMIVarBit.fromInt(getBits(), from);
        }

        @Specialization
        public LLVMIVarBit executeI32(long from) {
            return LLVMIVarBit.fromLong(getBits(), from);
        }

        @Specialization
        public LLVMIVarBit executeI8(LLVMIVarBit from) {
            return LLVMIVarBit.create(getBits(), from.getSignExtendedBytes());
        }

        @Specialization
        public LLVMIVarBit executeI8(LLVM80BitFloat from) {
            return LLVMIVarBit.create(getBits(), from.getBytes());
        }
    }

    @NodeChild(value = "fromNode", type = LLVMExpressionNode.class)
    @NodeField(type = int.class, name = "bits")
    public abstract static class LLVMToIVarZeroExtNode extends LLVMToVarINode {

        public abstract int getBits();

        @Specialization
        public LLVMIVarBit executeI32(int from) {
            return LLVMIVarBit.createZeroExt(getBits(), from);
        }

        @Specialization
        public LLVMIVarBit executeI32(long from) {
            return LLVMIVarBit.createZeroExt(getBits(), from);
        }
    }

    @NodeChild(value = "fromNode", type = LLVMExpressionNode.class)
    public abstract static class LLVM80BitFloatToIVarBitwidthNode extends LLVMToVarINode {

        @Specialization
        public LLVMIVarBit execute80BitFloat(LLVM80BitFloat from) {
            return LLVMIVarBit.create(80, from.getBytes());
        }
    }

}