1 files changed, 120 insertions, 15 deletions
diff --git a/contrib/tools/python3/Include/internal/pycore_bytesobject.h b/contrib/tools/python3/Include/internal/pycore_bytesobject.h
index d36fa9569d6..8c922a4fb30 100644
--- a/contrib/tools/python3/Include/internal/pycore_bytesobject.h
+++ b/contrib/tools/python3/Include/internal/pycore_bytesobject.h
@@ -8,39 +8,144 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
+extern PyObject* _PyBytes_FormatEx(
+    const char *format,
+    Py_ssize_t format_len,
+    PyObject *args,
+    int use_bytearray);
 
-/* Substring Search.
+extern PyObject* _PyBytes_FromHex(
+    PyObject *string,
+    int use_bytearray);
 
-   Returns the index of the first occurrence of
-   a substring ("needle") in a larger text ("haystack").
-   If the needle is not found, return -1.
-   If the needle is found, add offset to the index.
-*/
+// Helper for PyBytes_DecodeEscape that detects invalid escape chars.
+// Export for test_peg_generator.
+PyAPI_FUNC(PyObject*) _PyBytes_DecodeEscape2(const char *, Py_ssize_t,
+                                             const char *,
+                                             int *, const char **);
+// Export for binary compatibility.
+PyAPI_FUNC(PyObject*) _PyBytes_DecodeEscape(const char *, Py_ssize_t,
+                                            const char *, const char **);
 
+
+// Substring Search.
+//
+// Returns the index of the first occurrence of
+// a substring ("needle") in a larger text ("haystack").
+// If the needle is not found, return -1.
+// If the needle is found, add offset to the index.
+//
+// Export for 'mmap' shared extension.
 PyAPI_FUNC(Py_ssize_t)
 _PyBytes_Find(const char *haystack, Py_ssize_t len_haystack,
               const char *needle, Py_ssize_t len_needle,
               Py_ssize_t offset);
 
-/* Same as above, but search right-to-left */
+// Same as above, but search right-to-left.
+// Export for 'mmap' shared extension.
 PyAPI_FUNC(Py_ssize_t)
 _PyBytes_ReverseFind(const char *haystack, Py_ssize_t len_haystack,
                      const char *needle, Py_ssize_t len_needle,
                      Py_ssize_t offset);
 
 
-/** Helper function to implement the repeat and inplace repeat methods on a buffer
- *
- * len_dest is assumed to be an integer multiple of len_src.
- * If src equals dest, then assume the operation is inplace.
- *
- * This method repeately doubles the number of bytes copied to reduce
- * the number of invocations of memcpy.
- */
+// Helper function to implement the repeat and inplace repeat methods on a
+// buffer.
+//
+// len_dest is assumed to be an integer multiple of len_src.
+// If src equals dest, then assume the operation is inplace.
+//
+// This method repeately doubles the number of bytes copied to reduce
+// the number of invocations of memcpy.
+//
+// Export for 'array' shared extension.
 PyAPI_FUNC(void)
 _PyBytes_Repeat(char* dest, Py_ssize_t len_dest,
     const char* src, Py_ssize_t len_src);
 
+/* --- _PyBytesWriter ----------------------------------------------------- */
+
+/* The _PyBytesWriter structure is big: it contains an embedded "stack buffer".
+   A _PyBytesWriter variable must be declared at the end of variables in a
+   function to optimize the memory allocation on the stack. */
+typedef struct {
+    /* bytes, bytearray or NULL (when the small buffer is used) */
+    PyObject *buffer;
+
+    /* Number of allocated size. */
+    Py_ssize_t allocated;
+
+    /* Minimum number of allocated bytes,
+       incremented by _PyBytesWriter_Prepare() */
+    Py_ssize_t min_size;
+
+    /* If non-zero, use a bytearray instead of a bytes object for buffer. */
+    int use_bytearray;
+
+    /* If non-zero, overallocate the buffer (default: 0).
+       This flag must be zero if use_bytearray is non-zero. */
+    int overallocate;
+
+    /* Stack buffer */
+    int use_small_buffer;
+    char small_buffer[512];
+} _PyBytesWriter;
+
+/* Initialize a bytes writer
+
+   By default, the overallocation is disabled. Set the overallocate attribute
+   to control the allocation of the buffer.
+
+   Export _PyBytesWriter API for '_pickle' shared extension. */
+PyAPI_FUNC(void) _PyBytesWriter_Init(_PyBytesWriter *writer);
+
+/* Get the buffer content and reset the writer.
+   Return a bytes object, or a bytearray object if use_bytearray is non-zero.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(PyObject *) _PyBytesWriter_Finish(_PyBytesWriter *writer,
+    void *str);
+
+/* Deallocate memory of a writer (clear its internal buffer). */
+PyAPI_FUNC(void) _PyBytesWriter_Dealloc(_PyBytesWriter *writer);
+
+/* Allocate the buffer to write size bytes.
+   Return the pointer to the beginning of buffer data.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Alloc(_PyBytesWriter *writer,
+    Py_ssize_t size);
+
+/* Ensure that the buffer is large enough to write *size* bytes.
+   Add size to the writer minimum size (min_size attribute).
+
+   str is the current pointer inside the buffer.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Prepare(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Resize the buffer to make it larger.
+   The new buffer may be larger than size bytes because of overallocation.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error.
+
+   Note: size must be greater than the number of allocated bytes in the writer.
+
+   This function doesn't use the writer minimum size (min_size attribute).
+
+   See also _PyBytesWriter_Prepare().
+   */
+PyAPI_FUNC(void*) _PyBytesWriter_Resize(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Write bytes.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_WriteBytes(_PyBytesWriter *writer,
+    void *str,
+    const void *bytes,
+    Py_ssize_t size);
+
 #ifdef __cplusplus
 }
 #endif