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Extract backref_number_check

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This commit is contained in:
Nobuyoshi Nakada 2021-09-11 22:50:59 +09:00
parent 99d8c4832a
commit c5570a7c11
Notes: git 2021-09-12 11:17:11 +09:00 
Merged: https://github.com/ruby/ruby/pull/4822
1 changed files with 10 additions and 6 deletions
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16
re.c
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@ -1159,6 +1159,13 @@ name_to_backref_error(VALUE name)
name);
}
static void
backref_number_check(struct re_registers *regs, int i)
{
if (i < 0 || regs->num_regs <= i)
rb_raise(rb_eIndexError, "index %d out of matches", i);
}
static int
match_backref_number(VALUE match, VALUE backref)
{
@ -1217,8 +1224,7 @@ match_offset(VALUE match, VALUE n)
struct re_registers *regs = RMATCH_REGS(match);
match_check(match);
if (i < 0 || regs->num_regs <= i)
rb_raise(rb_eIndexError, "index %d out of matches", i);
backref_number_check(regs, i);
if (BEG(i) < 0)
return rb_assoc_new(Qnil, Qnil);
@ -1253,8 +1259,7 @@ match_begin(VALUE match, VALUE n)
struct re_registers *regs = RMATCH_REGS(match);
match_check(match);
if (i < 0 || regs->num_regs <= i)
rb_raise(rb_eIndexError, "index %d out of matches", i);
backref_number_check(regs, i);
if (BEG(i) < 0)
return Qnil;
@ -1288,8 +1293,7 @@ match_end(VALUE match, VALUE n)
struct re_registers *regs = RMATCH_REGS(match);
match_check(match);
if (i < 0 || regs->num_regs <= i)
rb_raise(rb_eIndexError, "index %d out of matches", i);
backref_number_check(regs, i);
if (BEG(i) < 0)
return Qnil;