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Fix bit sets with custom endian underlying type

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This commit is contained in:
gingerBill
2018-12-02 19:27:42 +00:00
parent 28583bfff8
commit 17b0e3a1a1
4 changed files with 56 additions and 13 deletions
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core/fmt/fmt.odin
+36 -4
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@@ -834,6 +834,25 @@ enum_value_to_u64 :: proc(ev: runtime.Type_Info_Enum_Value) -> u64 {
}
fmt_bit_set :: proc(fi: ^Fmt_Info, v: any, name: string = "") {
is_bit_set_different_endian_to_platform :: proc(ti: ^runtime.Type_Info, ) -> bool {
if ti == nil {
return false;
}
ti = runtime.type_info_base(ti);
switch info in ti.variant {
case runtime.Type_Info_Integer:
using runtime.Type_Info_Endianness;
switch info.endianness {
case Platform: return false;
case Little: return ODIN_ENDIAN != "little";
case Big: return ODIN_ENDIAN != "big";
}
}
return false;
}
byte_swap :: bits.byte_swap;
type_info := type_info_of(v.id);
switch info in type_info.variant {
case runtime.Type_Info_Named:
@@ -845,12 +864,25 @@ fmt_bit_set :: proc(fi: ^Fmt_Info, v: any, name: string = "") {
bits: u64;
bit_size := u64(8*type_info.size);
do_byte_swap := is_bit_set_different_endian_to_platform(info.underlying);
switch bit_size {
case 0: bits = 0;
case 8: bits = u64( (^u8)(v.data)^);
case 16: bits = u64((^u16)(v.data)^);
case 32: bits = u64((^u32)(v.data)^);
case 64: bits = u64((^u64)(v.data)^);
case 8:
x := (^u8)(v.data)^;
bits = u64(x);
case 16:
x := (^u16)(v.data)^;
if do_byte_swap do x = byte_swap(x);
bits = u64(x);
case 32:
x := (^u32)(v.data)^;
if do_byte_swap do x = byte_swap(x);
bits = u64(x);
case 64:
x := (^u64)(v.data)^;
if do_byte_swap do x = byte_swap(x);
bits = u64(x);
case: panic("unknown bit_size size");
}