/// <summary>
/// Pops the value on the stack, converts it to an object, then pushes the result onto the
/// stack.
/// </summary>
/// <param name="generator"> The IL generator. </param>
/// <param name="fromType"> The type to convert from. </param>
public static void ToAny(ILGenerator generator, Type fromType)
{
if (PrimitiveTypeUtilities.IsValueType(fromType))
{
generator.Box(fromType);
}
}
/// <summary>
/// Pops the value on the stack, converts it to a concatenated string, then pushes the result
/// onto the stack.
/// </summary>
/// <param name="generator"> The IL generator. </param>
/// <param name="fromType"> The type to convert from. </param>
public static void ToConcatenatedString(ILGenerator generator, Type fromType)
{
// Check that a conversion is actually necessary.
if (fromType == typeof(ConcatenatedString))
{
return;
}
if (fromType == typeof(Nitrassic.Undefined) || fromType == typeof(Nitrassic.Null) ||
fromType == typeof(bool) || fromType == typeof(string))
{
// Convert as per ToString, then create a new ConcatenatedString instance.
ToString(generator, fromType);
generator.NewObject(ReflectionHelpers.ConcatenatedString_Constructor_String);
}
else if (fromType == typeof(int) || fromType == typeof(uint) || fromType == typeof(double) ||
fromType == typeof(object) || fromType == typeof(Library.ObjectInstance))
{
// Otherwise, fall back to calling TypeConverter.ToConcatenatedString()
if (PrimitiveTypeUtilities.IsValueType(fromType))
{
generator.Box(fromType);
}
generator.Call(ReflectionHelpers.TypeConverter_ToConcatenatedString);
}
else
{
throw new NotImplementedException(string.Format("Unsupported primitive type: {0}", fromType));
}
}
/// <summary>
/// Pops the value on the stack, converts it to a string, then pushes the result onto the
/// stack.
/// </summary>
/// <param name="generator"> The IL generator. </param>
/// <param name="fromType"> The type to convert from. </param>
public static void ToString(ILGenerator generator, Type fromType)
{
// Check that a conversion is actually necessary.
if (fromType == typeof(string))
{
return;
}
if (fromType == typeof(Nitrassic.Undefined))
{
// Converting from undefined produces "undefined".
generator.Pop();
generator.LoadString("undefined");
}
else if (fromType == typeof(Nitrassic.Null))
{
// Converting from null produces "null".
generator.Pop();
generator.LoadString("null");
}
else if (fromType == typeof(bool))
{
// Converting from a boolean produces "false" if the boolean is false, or "true" if the boolean is true.
var elseClause = generator.CreateLabel();
var endOfIf = generator.CreateLabel();
generator.BranchIfFalse(elseClause);
generator.LoadString("true");
generator.Branch(endOfIf);
generator.DefineLabelPosition(elseClause);
generator.LoadString("false");
generator.DefineLabelPosition(endOfIf);
}
else if (fromType == typeof(ConcatenatedString))
{
generator.Call(ReflectionHelpers.ConcatenatedString_ToString);
}
else
{
// Otherwise, fall back to calling TypeConverter.ToString()
if (PrimitiveTypeUtilities.IsValueType(fromType))
{
generator.Box(fromType);
}
generator.Call(ReflectionHelpers.TypeConverter_ToString);
}
}
/// <summary>
/// Pops the value on the stack, converts it to a primitive value, then pushes the result
/// onto the stack.
/// </summary>
/// <param name="generator"> The IL generator. </param>
/// <param name="fromType"> The type to convert from. </param>
/// <param name="preferredType"> Specifies whether toString() or valueOf() should be
/// preferred when converting to a primitive. </param>
public static void ToPrimitive(ILGenerator generator, Type fromType, PrimitiveTypeHint preferredType)
{
if (fromType == typeof(Nitrassic.Undefined) || fromType == typeof(Nitrassic.Null) ||
fromType == typeof(bool) || fromType == typeof(string) || fromType == typeof(ConcatenatedString) ||
fromType == typeof(int) || fromType == typeof(uint) || fromType == typeof(double))
{
return;
}
else if (fromType == typeof(object) || fromType == typeof(Library.ObjectInstance))
{
// Otherwise, fall back to calling TypeConverter.ToPrimitive()
if (PrimitiveTypeUtilities.IsValueType(fromType))
{
generator.Box(fromType);
}
generator.LoadInt32((int)preferredType);
generator.Call(ReflectionHelpers.TypeConverter_ToPrimitive);
}
else
{
throw new NotImplementedException("Unsupported primitive type: " + fromType);
}
}