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parse.y: shared substring of source

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* parse.y (lex_get_str): return shared sub-string of entire source
  string instead of a partial copy.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45629 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-04-18 14:27:22 +00:00
parent 609a6ebac5
commit 5b54488e78
1 changed files with 11 additions and 11 deletions
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22
parse.y
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@ -5416,21 +5416,21 @@ must_be_ascii_compatible(VALUE s)
static VALUE
lex_get_str(struct parser_params *parser, VALUE s)
{
char *beg, *end, *pend;
rb_encoding *enc = must_be_ascii_compatible(s);
char *beg, *end, *start;
long len;
beg = RSTRING_PTR(s);
len = RSTRING_LEN(s);
start = beg;
if (lex_gets_ptr) {
if (RSTRING_LEN(s) == lex_gets_ptr) return Qnil;
if (len == lex_gets_ptr) return Qnil;
beg += lex_gets_ptr;
len -= lex_gets_ptr;
}
pend = RSTRING_PTR(s) + RSTRING_LEN(s);
end = beg;
while (end < pend) {
if (*end++ == '\n') break;
}
lex_gets_ptr = end - RSTRING_PTR(s);
return rb_enc_str_new(beg, end - beg, enc);
end = memchr(beg, '\n', len);
if (end) len = ++end - beg;
lex_gets_ptr += len;
return rb_str_subseq(s, beg - start, len);
}
static VALUE
@ -5465,7 +5465,7 @@ parser_compile_string(volatile VALUE vparser, VALUE fname, VALUE s, int line)
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
lex_gets = lex_get_str;
lex_gets_ptr = 0;
lex_input = s;
lex_input = rb_str_new_frozen(s);
lex_pbeg = lex_p = lex_pend = 0;
compile_for_eval = rb_parse_in_eval();