Reduce `is_ascii_string` function dependency for parser

Changed to use `rb_parser_is_ascii_string` function instead of `is_ascii_string` function

1 files changed, 7 insertions, 2 deletions

diff --git a/parse.y b/parse.y
index 94c4c5da4d..3e0a903b77 100644
--- a/parse.y
+++ b/parse.y
@@ -7694,16 +7694,21 @@ static VALUE
 parser_str_new(struct parser_params *p, const char *ptr, long len, rb_encoding *enc, int func, rb_encoding *enc0)
 {
     VALUE str;
+    rb_parser_string_t *pstr;
+
+    pstr = rb_parser_encoding_string_new(p, ptr, len, enc);
+    str = rb_str_new_mutable_parser_string(pstr);
 
-    str = rb_enc_str_new(ptr, len, enc);
     if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) {
-        if (is_ascii_string(str)) {
+        if (rb_parser_is_ascii_string(p, pstr)) {
         }
         else if (rb_is_usascii_enc((void *)enc0) && enc != rb_utf8_encoding()) {
             rb_enc_associate(str, rb_ascii8bit_encoding());
         }
     }
 
+    rb_parser_string_free(p, pstr);
+
     return str;
 }