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));
}