diff options
author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2019-04-24 13:35:23 +0900 |
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committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2019-04-26 09:33:48 +0900 |
commit | 54eac83b2ad77ddea84fa6d66c09e0bb014cf61e (patch) | |
tree | 01dd78aef4d8a7ee300ff086b8a99e13ef8ecd42 /symbol.c | |
parent | 5689c46457e6b078ac83b08b7e881e0050ebdfaa (diff) |
Hide internal IDs
* parse.y (internal_id): number the ID serial for internal use by
counting down from the neary maximum value, not to accidentally
match permanent IDs.
[Bug #15768]
Notes
Notes:
Fixed: [Bug #15786]
Diffstat (limited to 'symbol.c')
-rw-r--r-- | symbol.c | 36 |
1 files changed, 30 insertions, 6 deletions
@@ -19,6 +19,9 @@ #ifndef SYMBOL_DEBUG # define SYMBOL_DEBUG 0 #endif +#ifndef CHECK_ID_SERIAL +# define CHECK_ID_SERIAL SYMBOL_DEBUG +#endif #define SYMBOL_PINNED_P(sym) (RSYMBOL(sym)->id&~ID_SCOPE_MASK) @@ -370,20 +373,41 @@ set_id_entry(rb_id_serial_t num, VALUE str, VALUE sym) } static VALUE -get_id_entry(rb_id_serial_t num, const enum id_entry_type t) +get_id_serial_entry(rb_id_serial_t num, ID id, const enum id_entry_type t) { if (num && num <= global_symbols.last_id) { size_t idx = num / ID_ENTRY_UNIT; VALUE ids = global_symbols.ids; VALUE ary; if (idx < (size_t)RARRAY_LEN(ids) && !NIL_P(ary = rb_ary_entry(ids, (long)idx))) { - VALUE result = rb_ary_entry(ary, (long)(num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE + t); - if (!NIL_P(result)) return result; + long pos = (long)(num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE; + VALUE result = rb_ary_entry(ary, pos + t); + if (NIL_P(result)) return 0; +#if CHECK_ID_SERIAL + if (id) { + VALUE sym = result; + if (t != ID_ENTRY_SYM) + sym = rb_ary_entry(ary, pos + ID_ENTRY_SYM); + if (STATIC_SYM_P(sym)) { + if (STATIC_SYM2ID(sym) != id) return 0; + } + else { + if (RSYMBOL(sym)->id != id) return 0; + } + } +#endif + return result; } } return 0; } +static VALUE +get_id_entry(ID id, const enum id_entry_type t) +{ + return get_id_serial_entry(rb_id_to_serial(id), id, t); +} + static inline ID #ifdef __GNUC__ __attribute__((unused)) @@ -391,7 +415,7 @@ __attribute__((unused)) rb_id_serial_to_id(rb_id_serial_t num) { if (is_notop_id((ID)num)) { - VALUE sym = get_id_entry(num, ID_ENTRY_SYM); + VALUE sym = get_id_serial_entry(num, 0, ID_ENTRY_SYM); return SYM2ID(sym); } else { @@ -579,7 +603,7 @@ lookup_str_sym(const VALUE str) static VALUE lookup_id_str(ID id) { - return get_id_entry(rb_id_to_serial(id), ID_ENTRY_STR); + return get_id_entry(id, ID_ENTRY_STR); } ID @@ -758,7 +782,7 @@ VALUE rb_id2sym(ID x) { if (!DYNAMIC_ID_P(x)) return STATIC_ID2SYM(x); - return get_id_entry(rb_id_to_serial(x), ID_ENTRY_SYM); + return get_id_entry(x, ID_ENTRY_SYM); } |