fx: implement wchar and wstr value types

fx/value-type.c

@@ -1,7 +1,12 @@
+#include <fx/int-primitives.h>
 #include <fx/value-type.h>
 
 bool fx_type_is_value_type(fx_type_id ty)
 {
+	if (!ty) {
+		return false;
+	}
+
 	return ty->a.p00 == __FX_VALUE_TYPE_BASEID;
 }
 
@@ -14,6 +19,65 @@ unsigned int __fx_type_get_value_type(fx_type_id ty)
 	return ty->a.p01;
 }
 
+size_t __fx_value_type_get_size(unsigned int ty)
+{
+	switch (ty) {
+	case __FX_VALUE_TYPE_BOOL:
+		return sizeof(bool);
+	case __FX_VALUE_TYPE_I16:
+		return sizeof(i16);
+	case __FX_VALUE_TYPE_U16:
+		return sizeof(u16);
+	case __FX_VALUE_TYPE_I32:
+		return sizeof(i32);
+	case __FX_VALUE_TYPE_U32:
+		return sizeof(u32);
+	case __FX_VALUE_TYPE_I64:
+		return sizeof(i64);
+	case __FX_VALUE_TYPE_U64:
+		return sizeof(u64);
+	case __FX_VALUE_TYPE_IPTR:
+		return sizeof(iptr);
+	case __FX_VALUE_TYPE_UPTR:
+		return sizeof(uptr);
+
+	case __FX_VALUE_TYPE_SBYTE:
+		return sizeof(sbyte);
+	case __FX_VALUE_TYPE_BYTE:
+		return sizeof(byte);
+	case __FX_VALUE_TYPE_SHORT:
+		return sizeof(short);
+	case __FX_VALUE_TYPE_USHORT:
+		return sizeof(unsigned short);
+	case __FX_VALUE_TYPE_INT:
+		return sizeof(int);
+	case __FX_VALUE_TYPE_UINT:
+		return sizeof(unsigned int);
+	case __FX_VALUE_TYPE_LONG:
+		return sizeof(long);
+	case __FX_VALUE_TYPE_ULONG:
+		return sizeof(unsigned long);
+	case __FX_VALUE_TYPE_LONGLONG:
+		return sizeof(long long);
+	case __FX_VALUE_TYPE_ULONGLONG:
+		return sizeof(unsigned long long);
+	case __FX_VALUE_TYPE_SIZE:
+		return sizeof(size_t);
+
+	case __FX_VALUE_TYPE_FLOAT:
+		return sizeof(float);
+	case __FX_VALUE_TYPE_DOUBLE:
+		return sizeof(double);
+
+	case __FX_VALUE_TYPE_CSTR:
+		return sizeof(const char *);
+	case __FX_VALUE_TYPE_POINTER:
+		return sizeof(void *);
+	default:
+		return 0;
+	}
+}
+
 /*** CLASS DEFINITION *********************************************************/
 
 FX_TYPE_CLASS_BEGIN(fx_value_type)