public override void Compile(Emitter.Emitter emitter) { var leftType = Left.GetExpressionType(emitter); var rightType = Right.GetExpressionType(emitter); var type = GetExpressionType(emitter); // subtract matrices if(type == "matrix") { Left.Compile(emitter); Right.Compile(emitter); var matrixType = typeof(MN.Matrix<double>); var method = emitter.AssemblyImport(matrixType.GetMethod("Subtract", new [] { matrixType } )); emitter.EmitCall(method); } // subtract dicts else if (type == "dict") { Left.Compile(emitter); Right.Compile(emitter); var dictType = typeof(Dict); var method = emitter.AssemblyImport(dictType.GetMethod("Subtract", new[] { dictType })); emitter.EmitCall(method); } // subtract complex numbers else if (type == "complex") { Left.Compile(emitter); if (leftType != "complex") { emitter.EmitUpcastBasicType(leftType, "float"); emitter.EmitLoadFloat(0); emitter.EmitNewObj(emitter.FindMethod("complex", ".ctor", "float", "float")); } Right.Compile(emitter); if (rightType != "complex") { emitter.EmitUpcastBasicType(rightType, "float"); emitter.EmitLoadFloat(0); emitter.EmitNewObj(emitter.FindMethod("complex", ".ctor", "float", "float")); } emitter.EmitCall(emitter.AssemblyImport(typeof(SN.Complex).GetMethod("op_Subtraction", new[] { typeof(SN.Complex), typeof(SN.Complex) }))); } // add floating point numbers or integers else if (type.IsAnyOf("int", "float")) { Left.Compile(emitter); emitter.EmitUpcastBasicType(leftType, type); Right.Compile(emitter); emitter.EmitUpcastBasicType(rightType, type); emitter.EmitSub(); } }