public override bool SupportsImplicit(TypeReference value)
{
if (value == null)
{
return(true);
}
if (value is NullableTypeReference)
{
return(false);
}
FunctionTypeReference tr = value as FunctionTypeReference;
if (tr == null)
{
return(false);
}
if (!returnType.SupportsImplicit(tr.returnType))
{
return(false);
}
if (parameters.Count != tr.parameters.Count)
{
return(false);
}
for (int i = 0; i < parameters.Count; ++i)
{
if (!parameters[i].SupportsImplicit(tr.parameters[i]))
{
return(false);
}
}
return(true);
}
public override bool SupportsImplicit(TypeReference value)
{
if (value == null)
{
return(true);
}
if (value is NullableTypeReference)
{
return(parent.SupportsImplicit(((NullableTypeReference)value).Parent));
}
else
{
if (value.TypeName.Data != "void")
{
return(parent.SupportsImplicit(value));
}
else
{
return(true);
}
}
}
public override void Generate(Generator generator)
{
base.Generate(generator);
parent.Generate(generator);
generator.Symbols.Source(generator.Assembler.Region.CurrentLocation, this);
TypeReference ptr = parent.TypeReference;
TypeReference str = returnType;
if (str.SupportsImplicit(ptr))
{
returnType.GenerateConversion(this, generator, parent.TypeReference);
}
else
{
JumpToken jtNull = null;
jtNull = generator.Assembler.CreateJumpToken();
generator.Assembler.JumpIfUnassigned(jtNull);
generator.Assembler.TypeConversionDynamicNotNull(resolvedType.Id);
generator.Assembler.SetDestination(jtNull);
}
}
public override void Generate(Generator generator)
{
base.Generate(generator);
parent.Generate(generator);
generator.Symbols.Source(generator.Assembler.Region.CurrentLocation, this);
TypeReference ptr = parent.TypeReference;
bool allowNull = ptr.IsNullable && !typeReference.IsNullable;
if (!allowNull)
{
generator.Assembler.CrashIfNull();
}
TypeReference str = typeReference;
if (str.SupportsImplicit(ptr))
{
typeReference.GenerateConversion(this, generator, parent.TypeReference);
}
else
{
JumpToken jtNull = null;
if (allowNull)
{
jtNull = generator.Assembler.CreateJumpToken();
generator.Assembler.JumpIfUnassigned(jtNull);
}
generator.Assembler.TypeConversionDynamicNotNull(str.Id);
JumpToken jtOk = generator.Assembler.CreateJumpToken();
generator.Assembler.JumpIfAssigned(jtOk);
throwCastException.Generate(generator, null);
generator.Assembler.SetDestination(jtOk);
if (allowNull)
{
generator.Assembler.SetDestination(jtNull);
}
}
}
