Issue #28701: Replace _PyUnicode_CompareWithId with _PyUnicode_EqualToASCIIId.

The latter function is more readable, faster and doesn't raise exceptions.

Based on patch by Xiang Zhang.

1 files changed, 19 insertions, 0 deletions

diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 007c15bd47..6b6acd7353 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -2000,12 +2000,31 @@ PyAPI_FUNC(int) PyUnicode_Compare(
     );
 
 #ifndef Py_LIMITED_API
+/* Compare a string with an identifier and return -1, 0, 1 for less than,
+   equal, and greater than, respectively.
+   Raise an exception and return -1 on error. */
+
 PyAPI_FUNC(int) _PyUnicode_CompareWithId(
     PyObject *left,             /* Left string */
     _Py_Identifier *right       /* Right identifier */
     );
+
+/* Test whether a unicode is equal to ASCII identifier.  Return 1 if true,
+   0 otherwise.  Return 0 if any argument contains non-ASCII characters.
+   Any error occurs inside will be cleared before return. */
+
+PyAPI_FUNC(int) _PyUnicode_EqualToASCIIId(
+    PyObject *left,             /* Left string */
+    _Py_Identifier *right       /* Right identifier */
+    );
 #endif
 
+/* Compare a Unicode object with C string and return -1, 0, 1 for less than,
+   equal, and greater than, respectively.  It is best to pass only
+   ASCII-encoded strings, but the function interprets the input string as
+   ISO-8859-1 if it contains non-ASCII characters.
+   Raise an exception and return -1 on error. */
+
 PyAPI_FUNC(int) PyUnicode_CompareWithASCIIString(
     PyObject *left,
     const char *right           /* ASCII-encoded string */