mirrors/cpython
0
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2024-12-01 05:45:40 +08:00
Code Issues Packages Projects Releases Wiki Activity

gh-89653: Add assertions to unicodeobject.h functions (#92692)

Browse Source
This commit is contained in:
Victor Stinner 2022-05-12 00:12:42 +02:00 committed by GitHub
parent 7d3b469e47
commit d492f0ab2a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Include/cpython/unicodeobject.h
View File

@ -28,16 +28,22 @@ static inline int Py_UNICODE_IS_LOW_SURROGATE(Py_UCS4 ch) {
// Join two surrogate characters and return a single Py_UCS4 value. // Join two surrogate characters and return a single Py_UCS4 value.
static inline Py_UCS4 Py_UNICODE_JOIN_SURROGATES(Py_UCS4 high, Py_UCS4 low) { static inline Py_UCS4 Py_UNICODE_JOIN_SURROGATES(Py_UCS4 high, Py_UCS4 low) {
assert(Py_UNICODE_IS_HIGH_SURROGATE(high));
assert(Py_UNICODE_IS_LOW_SURROGATE(low));
return 0x10000 + (((high & 0x03FF) << 10) | (low & 0x03FF)); return 0x10000 + (((high & 0x03FF) << 10) | (low & 0x03FF));
} }
// High surrogate = top 10 bits added to D800 // High surrogate = top 10 bits added to 0xD800.
// The character must be in the range [U+10000; U+10ffff].
static inline Py_UCS4 Py_UNICODE_HIGH_SURROGATE(Py_UCS4 ch) { static inline Py_UCS4 Py_UNICODE_HIGH_SURROGATE(Py_UCS4 ch) {
assert(0x10000 <= ch && ch <= 0x10ffff);
return (0xD800 - (0x10000 >> 10) + (ch >> 10)); return (0xD800 - (0x10000 >> 10) + (ch >> 10));
} }
// Low surrogate = bottom 10 bits added to DC00 // Low surrogate = bottom 10 bits added to 0xDC00.
// The character must be in the range [U+10000; U+10ffff].
static inline Py_UCS4 Py_UNICODE_LOW_SURROGATE(Py_UCS4 ch) { static inline Py_UCS4 Py_UNICODE_LOW_SURROGATE(Py_UCS4 ch) {
assert(0x10000 <= ch && ch <= 0x10ffff);
return (0xDC00 + (ch & 0x3FF)); return (0xDC00 + (ch & 0x3FF));
} }