public override void Compile(Emitter.Emitter emitter)
{
var type = Expression.GetExpressionType(emitter);
if (type.IsAnyOf("int", "float", "complex"))
{
if(type == "complex")
{
// simple case: the complex is a constant
if(Expression is ComplexNode)
{
(Expression as ComplexNode).Imaginary *= -1;
Expression.Compile(emitter);
}
// complex case: complex is an expression result
else
{
Expression.Compile(emitter);
// tmp = ...
var tmpVar = emitter.CurrentMethod.Scope.Introduce("complex", emitter.FindType("complex").Type);
emitter.EmitSaveVariable(tmpVar);
// tmp.real
emitter.EmitLoadVariableAddress(tmpVar);
emitter.EmitCall(emitter.AssemblyImport(typeof(SN.Complex).GetMethod("get_Real")));
// tmp.imaginary * -1
emitter.EmitLoadVariableAddress(tmpVar);
emitter.EmitCall(emitter.AssemblyImport(typeof(SN.Complex).GetMethod("get_Imaginary")));
emitter.EmitLoadFloat(-1);
emitter.EmitMul();
// new complex
emitter.EmitNewObj(emitter.FindMethod("complex", ".ctor", "float", "float"));
}
}
else
{
// multiply by -1
Expression.Compile(emitter);
if (type == "int")
emitter.EmitLoadInt(-1);
else
emitter.EmitLoadFloat(-1);
emitter.EmitMul();
}
}
else
Error(String.Format(Resources.errInvertType, type));
}
public override void Compile(Emitter.Emitter emitter)
{
var leftType = Left.GetExpressionType(emitter);
var rightType = Right.GetExpressionType(emitter);
var type = GetExpressionType(emitter);
// repeat a string
if (type == "string")
{
Left.Compile(emitter);
Right.Compile(emitter);
emitter.EmitCall(emitter.FindMethod("string", "repeat", "int"));
}
// multiply matrices
else if(type == "matrix")
{
var matrixType = typeof(MN.Matrix<double>);
// matrix by matrix
if(leftType == rightType)
{
Left.Compile(emitter);
Right.Compile(emitter);
var method = emitter.AssemblyImport(matrixType.GetMethod("Multiply", new[] { matrixType }));
emitter.EmitCall(method);
}
else
{
// matrix should be the first in stack
if(leftType == "matrix")
{
Left.Compile(emitter);
Right.Compile(emitter);
if (rightType != "float")
emitter.EmitConvertToFloat();
}
else
{
Right.Compile(emitter);
Left.Compile(emitter);
if (leftType != "float")
emitter.EmitConvertToFloat();
}
var method = emitter.AssemblyImport(matrixType.GetMethod("Multiply", new[] { typeof(double) }));
emitter.EmitCall(method);
}
}
// multiply 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_Multiply", new[] { typeof(SN.Complex), typeof(SN.Complex) })));
}
// repeat array
else if (leftType.EndsWith("[]"))
{
Left.Compile(emitter);
Right.Compile(emitter);
var method = emitter.AssemblyImport(typeof(MirelleStdlib.ArrayHelper).GetMethod("RepeatArray", new[] { typeof(object), typeof(int) }));
emitter.EmitCall(method);
}
// multiply 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.EmitMul();
}
}