public static SPInstruction parseSingleInstruction()

in src/main/java/org/apache/sysds/runtime/instructions/SPInstructionParser.java [93:257]
119 lines of code
55 McCabe index (conditional complexity)

	public static SPInstruction parseSingleInstruction ( InstructionType sptype, String str ) {
		if ( str == null || str.isEmpty() )
			return null;

		String [] parts = null;
		switch(sptype)
		{
			// matrix multiplication instructions
			case CPMM:
				return CpmmSPInstruction.parseInstruction(str);
			case RMM:
				return RmmSPInstruction.parseInstruction(str);
			case MAPMM:
				return MapmmSPInstruction.parseInstruction(str);
			case MAPMMCHAIN:
				return MapmmChainSPInstruction.parseInstruction(str);
			case TSMM:
				return TsmmSPInstruction.parseInstruction(str);
			case TSMM2:
				return Tsmm2SPInstruction.parseInstruction(str);
			case PMM:
				return PmmSPInstruction.parseInstruction(str);
			case ZIPMM:
				return ZipmmSPInstruction.parseInstruction(str);
			case PMAPMM:
				return PMapmmSPInstruction.parseInstruction(str);


			case UaggOuterChain:
				return UaggOuterChainSPInstruction.parseInstruction(str);

			case AggregateUnary:
				return AggregateUnarySPInstruction.parseInstruction(str);

			case AggregateUnarySketch:
				return AggregateUnarySketchSPInstruction.parseInstruction(str);

			case AggregateTernary:
				return AggregateTernarySPInstruction.parseInstruction(str);

			case Dnn:
				 return DnnSPInstruction.parseInstruction(str);

			case MatrixIndexing:
				return IndexingSPInstruction.parseInstruction(str);

			case Reorg:
				return ReorgSPInstruction.parseInstruction(str);

			case Binary:
				return BinarySPInstruction.parseInstruction(str);

			case Ternary:
				return TernarySPInstruction.parseInstruction(str);

			//ternary instructions
			case Ctable:
				return CtableSPInstruction.parseInstruction(str);

			//quaternary instructions
			case Quaternary:
				return QuaternarySPInstruction.parseInstruction(str);

			// Reblock instructions
			case Reblock:
				return ReblockSPInstruction.parseInstruction(str);

			case CSVReblock:
				return CSVReblockSPInstruction.parseInstruction(str);

			case LIBSVMReblock:
				return LIBSVMReblockSPInstruction.parseInstruction(str);

			case Builtin:
				parts = InstructionUtils.getInstructionPartsWithValueType(str);
				if ( parts[0].equals(Opcodes.LOG.toString()) || parts[0].equals(Opcodes.LOGNZ.toString()) ) {
					if ( parts.length == 3 ) {
						// B=log(A), y=log(x)
						return UnaryMatrixSPInstruction.parseInstruction(str);
					} else if ( parts.length == 4 ) {
						// B=log(A,10), y=log(x,10)
						return BinarySPInstruction.parseInstruction(str);
					}
				}
				else {
					throw new DMLRuntimeException("Invalid Builtin Instruction: " + str );
				}

			case Unary:
				parts = InstructionUtils.getInstructionPartsWithValueType(str);
				CPOperand in = new CPOperand(parts[1]);
				if(in.getDataType() == Types.DataType.MATRIX)
					return UnaryMatrixSPInstruction.parseInstruction(str);
				else
					return UnaryFrameSPInstruction.parseInstruction(str);
			case BuiltinNary:
				return BuiltinNarySPInstruction.parseInstruction(str);

			case ParameterizedBuiltin:
				return ParameterizedBuiltinSPInstruction.parseInstruction(str);

			case MultiReturnBuiltin:
				return MultiReturnParameterizedBuiltinSPInstruction.parseInstruction(str);

			case MatrixReshape:
				return MatrixReshapeSPInstruction.parseInstruction(str);

			case MAppend: //matrix/frame
				return AppendMSPInstruction.parseInstruction(str);

			case RAppend: //matrix/frame
				return AppendRSPInstruction.parseInstruction(str);

			case GAppend:
				return AppendGSPInstruction.parseInstruction(str);

			case GAlignedAppend:
				return AppendGAlignedSPInstruction.parseInstruction(str);

			case Rand:
				return RandSPInstruction.parseInstruction(str);

			case QSort:
				return QuantileSortSPInstruction.parseInstruction(str);

			case QPick:
				return QuantilePickSPInstruction.parseInstruction(str);

			case Write:
				return WriteSPInstruction.parseInstruction(str);

			case CumsumAggregate:
				return CumulativeAggregateSPInstruction.parseInstruction(str);

			case CumsumOffset:
				return CumulativeOffsetSPInstruction.parseInstruction(str);

			case CentralMoment:
				return CentralMomentSPInstruction.parseInstruction(str);

			case Covariance:
				return CovarianceSPInstruction.parseInstruction(str);

			case BinUaggChain:
				return BinUaggChainSPInstruction.parseInstruction(str);

			case Checkpoint:
				return CheckpointSPInstruction.parseInstruction(str);

			case Compression:
				return CompressionSPInstruction.parseInstruction(str);

			case DeCompression:
				return DeCompressionSPInstruction.parseInstruction(str);

			case SpoofFused:
				return SpoofSPInstruction.parseInstruction(str);

			case Cast:
				return CastSPInstruction.parseInstruction(str);

			default:
				throw new DMLRuntimeException("Invalid SP Instruction Type: " + sptype );
		}
	}