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package com.oracle.truffle.llvm.nodes.cast;

import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.ExplodeLoop;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;
import com.oracle.truffle.llvm.runtime.vector.LLVMI16Vector;
import com.oracle.truffle.llvm.runtime.vector.LLVMI1Vector;
import com.oracle.truffle.llvm.runtime.vector.LLVMI32Vector;
import com.oracle.truffle.llvm.runtime.vector.LLVMI64Vector;
import com.oracle.truffle.llvm.runtime.vector.LLVMI8Vector;

public abstract class LLVMToVectorZeroExtNode extends LLVMToVectorNode {

    public abstract static class LLVMUnsignedCastToI1VectorNode extends LLVMToVectorNode {

        @Specialization
        protected LLVMI1Vector doI1Vector(LLVMI1Vector from) {
            assert from.getLength() == getVectorLength();
            return from;
        }
    }

    public abstract static class LLVMUnsignedCastToI8VectorNode extends LLVMToVectorNode {

        @Specialization
        @ExplodeLoop
        protected LLVMI8Vector doI1Vector(LLVMI1Vector from) {
            assert from.getLength() == getVectorLength();
            final byte[] vector = new byte[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = (byte) (from.getValue(i) ? 1 : 0);
            }
            return LLVMI8Vector.create(vector);
        }

        @Specialization
        protected LLVMI8Vector doI8Vector(LLVMI8Vector from) {
            assert from.getLength() == getVectorLength();
            return from;
        }
    }

    public abstract static class LLVMUnsignedCastToI16VectorNode extends LLVMToVectorNode {

        @Specialization
        @ExplodeLoop
        protected LLVMI16Vector doI1Vector(LLVMI1Vector from) {
            assert from.getLength() == getVectorLength();
            final short[] vector = new short[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = (short) (from.getValue(i) ? 1 : 0);
            }
            return LLVMI16Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI16Vector doI8Vector(LLVMI8Vector from) {
            assert from.getLength() == getVectorLength();
            final short[] vector = new short[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = (short) (from.getValue(i) & LLVMExpressionNode.I8_MASK);
            }
            return LLVMI16Vector.create(vector);
        }

        @Specialization
        protected LLVMI16Vector doI16Vector(LLVMI16Vector from) {
            assert from.getLength() == getVectorLength();
            return from;
        }
    }

    public abstract static class LLVMUnsignedCastToI32VectorNode extends LLVMToVectorNode {

        @Specialization
        @ExplodeLoop
        protected LLVMI32Vector doI1Vector(LLVMI1Vector from) {
            assert from.getLength() == getVectorLength();
            final int[] vector = new int[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) ? 1 : 0;
            }
            return LLVMI32Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI32Vector doI8Vector(LLVMI8Vector from) {
            assert from.getLength() == getVectorLength();
            final int[] vector = new int[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) & LLVMExpressionNode.I8_MASK;
            }
            return LLVMI32Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI32Vector doI16Vector(LLVMI16Vector from) {
            assert from.getLength() == getVectorLength();
            final int[] vector = new int[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) & LLVMExpressionNode.I16_MASK;
            }
            return LLVMI32Vector.create(vector);
        }

        @Specialization
        protected LLVMI32Vector doI32Vector(LLVMI32Vector from) {
            assert from.getLength() == getVectorLength();
            return from;
        }
    }

    public abstract static class LLVMUnsignedCastToI64VectorNode extends LLVMToVectorNode {

        @Specialization
        @ExplodeLoop
        protected LLVMI64Vector doI1Vector(LLVMI1Vector from) {
            assert from.getLength() == getVectorLength();
            final long[] vector = new long[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) ? 1 : 0;
            }
            return LLVMI64Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI64Vector doI8Vector(LLVMI8Vector from) {
            assert from.getLength() == getVectorLength();
            final long[] vector = new long[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) & LLVMExpressionNode.I8_MASK;
            }
            return LLVMI64Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI64Vector doI16Vector(LLVMI16Vector from) {
            assert from.getLength() == getVectorLength();
            final long[] vector = new long[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) & LLVMExpressionNode.I16_MASK;
            }
            return LLVMI64Vector.create(vector);
        }

        @Specialization
        @ExplodeLoop
        protected LLVMI64Vector doI32Vector(LLVMI32Vector from) {
            assert from.getLength() == getVectorLength();
            final long[] vector = new long[getVectorLength()];
            for (int i = 0; i < getVectorLength(); i++) {
                vector[i] = from.getValue(i) & LLVMExpressionNode.I32_MASK;
            }
            return LLVMI64Vector.create(vector);
        }

        @Specialization
        protected LLVMI64Vector doI64Vector(LLVMI64Vector from) {
            assert from.getLength() == getVectorLength();
            return from;
        }
    }

}
