Add syntax literals for signed and unsigned 64 bit integers.

Number literals can now take an optional "representation" suffix

- Use `:n` for normal numbers (IEEE-754 doubles)
- Use `:s` for signed 64 bit integers
- Use `:u` for unsigned 64 bit integers
- Other suffix will fallthrough the usual parseing logic. This means
  that they will only possibly resolve to symbols if they start with -,
  +, or .

The syntax does not collide with any existing valid Janet and is only
enabled with JANET_INTTYPES. This also leaves open a syntax for other
number types such as bignums, ratios, decimals, etc.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/include/janet.h b/src/include/janet.h
index 88e7f066..cc3fe1cf 100644
--- a/src/include/janet.h
+++ b/src/include/janet.h
@@ -1598,6 +1598,9 @@ JANET_API int janet_scan_number(const uint8_t *str, int32_t len, double *out);
 JANET_API int janet_scan_number_base(const uint8_t *str, int32_t len, int32_t base, double *out);
 JANET_API int janet_scan_int64(const uint8_t *str, int32_t len, int64_t *out);
 JANET_API int janet_scan_uint64(const uint8_t *str, int32_t len, uint64_t *out);
+#ifdef JANET_INT_TYPES
+JANET_API int janet_scan_numeric(const uint8_t *str, int32_t len, Janet *out);
+#endif
 
 /* Debugging */
 JANET_API void janet_debug_break(JanetFuncDef *def, int32_t pc);