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* string.c (rb_str_each_char): performance improvement, and stop if

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shortened in the block.  [ruby-dev:33189]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15140 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2008-01-20 04:06:03 +00:00
parent 3106b96ac8
commit 00190701e0
2 changed files with 19 additions and 3 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Sun Jan 20 13:06:01 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* string.c (rb_str_each_char): performance improvement, and stop if
shortened in the block. [ruby-dev:33189]
Sun Jan 20 09:12:26 2008 NARUSE, Yui <naruse@ruby-lang.org>
* common.mk: use -Ks when read insns.def. [ruby-dev#33185]

17
string.c
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@ -4590,11 +4590,22 @@ rb_str_each_byte(VALUE str)
static VALUE
rb_str_each_char(VALUE str)
{
int i, len = str_strlen(str, 0);
int i, len, n;
const char *ptr, *s;
rb_encoding *enc;
RETURN_ENUMERATOR(str, 0, 0);
for (i=0; i<len; i++) {
rb_yield(rb_str_substr(str, i, 1));
ptr = RSTRING_PTR(str);
len = RSTRING_LEN(str);
enc = rb_enc_get(str);
n = rb_enc_mbclen(ptr, ptr + len, enc);
for (i = 0; i < len; i += n) {
rb_yield(rb_str_subseq(str, i, n));
ptr = RSTRING_PTR(str);
len = RSTRING_LEN(str);
enc = rb_enc_get(str);
s = rb_enc_left_char_head(ptr, ptr + i, enc);
n = rb_enc_mbclen(s, ptr + len, enc);
}
return str;
}