encoding.h: rb_enc_asciicompat_inline

* include/ruby/encoding.h (rb_enc_asciicompat): turn into an
  inline function to get rid of evalucating the argument twice.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/include/ruby/encoding.h b/include/ruby/encoding.h
index 5ea2cda116..ceedf0db65 100644
--- a/include/ruby/encoding.h
+++ b/include/ruby/encoding.h
@@ -232,7 +232,12 @@ int rb_enc_code_to_mbclen(int code, rb_encoding *enc);
 #define rb_enc_isspace(c,enc) ONIGENC_IS_CODE_SPACE((enc),(c))
 #define rb_enc_isdigit(c,enc) ONIGENC_IS_CODE_DIGIT((enc),(c))
 
-#define rb_enc_asciicompat(enc) (rb_enc_mbminlen(enc)==1 && !rb_enc_dummy_p(enc))
+static inline int
+rb_enc_asciicompat_inline(rb_encoding *enc)
+{
+    return rb_enc_mbminlen(enc)==1 && !rb_enc_dummy_p(enc);
+}
+#define rb_enc_asciicompat(enc) rb_enc_asciicompat_inline(enc)
 
 int rb_enc_casefold(char *to, const char *p, const char *e, rb_encoding *enc);
 int rb_enc_toupper(int c, rb_encoding *enc);