diff options
| author | John Hawthorn <[email protected]> | 2021-09-10 14:01:49 -0700 |
|---|---|---|
| committer | Alan Wu <[email protected]> | 2021-10-20 18:19:40 -0400 |
| commit | fc13ff14a2a78173dd4a1e93c8f4e3665a4e8555 (patch) | |
| tree | f223eec6231318a643b3367b383b498d07497955 | |
| parent | bf8557f48719434261f9cf4051582868dca95363 (diff) | |
Add comments to getspecial
| -rw-r--r-- | yjit_codegen.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/yjit_codegen.c b/yjit_codegen.c index e6f955f210..049c72b6ba 100644 --- a/yjit_codegen.c +++ b/yjit_codegen.c @@ -3810,6 +3810,9 @@ gen_toregexp(jitstate_t* jit, ctx_t* ctx) static codegen_status_t gen_getspecial(jitstate_t *jit, ctx_t *ctx) { + // This takes two arguments, key and type + // key is only used when type == 0 + // A non-zero type determines which type of backref to fetch rb_num_t key = jit_get_arg(jit, 0); rb_num_t type = jit_get_arg(jit, 1); @@ -3817,6 +3820,8 @@ gen_getspecial(jitstate_t *jit, ctx_t *ctx) // not yet implemented return YJIT_CANT_COMPILE; } else if (type & 0x01) { + // Fetch a "special" backref based on a char encoded by shifting by 1 + // Can raise if matchdata uninitialized jit_prepare_routine_call(jit, ctx, REG0); @@ -3851,6 +3856,8 @@ gen_getspecial(jitstate_t *jit, ctx_t *ctx) return YJIT_KEEP_COMPILING; } else { + // Fetch the N-th match from the last backref based on type shifted by 1 + // Can raise if matchdata uninitialized jit_prepare_routine_call(jit, ctx, REG0); |