bpo-35081: Move accu.h to Include/internal/pycore_accu.h (GH-10271)

The accu.h header is no longer part of the Python C API: it has been
moved to the "internal" headers which are restricted to Python
itself.

Replace #include "accu.h" with #include "pycore_accu.h".

Include/accu.h → Include/internal/pycore_accu.h

 #ifndef Py_LIMITED_API
-#ifndef Py_ACCU_H
-#define Py_ACCU_H
+#ifndef Py_INTERNAL_ACCU_H
+#define Py_INTERNAL_ACCU_H
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /*** This is a private API for use by the interpreter and the stdlib.
  *** Its definition may be changed or removed at any moment.
@@ -12,10 +15,6 @@
  * behaviour of using a naive repeated concatenation scheme.
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #undef small /* defined by some Windows headers */
 
 typedef struct {
@@ -32,6 +31,5 @@ PyAPI_FUNC(void) _PyAccu_Destroy(_PyAccu *acc);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* Py_ACCU_H */
-#endif /* Py_LIMITED_API */
+#endif /* !Py_INTERNAL_ACCU_H */
+#endif /* !Py_LIMITED_API */

Makefile.pre.in

@@ -935,7 +935,6 @@ regen-typeslots:
 PYTHON_HEADERS= \
 		$(srcdir)/Include/Python.h \
 		$(srcdir)/Include/abstract.h \
-		$(srcdir)/Include/accu.h \
 		$(srcdir)/Include/asdl.h \
 		$(srcdir)/Include/ast.h \
 		$(srcdir)/Include/bltinmodule.h \
@@ -1025,6 +1024,7 @@ PYTHON_HEADERS= \
 		pyconfig.h \
 		$(PARSER_HEADERS) \
 		$(srcdir)/Include/Python-ast.h \
+		$(srcdir)/Include/internal/pycore_accu.h \
 		$(srcdir)/Include/internal/pycore_atomic.h \
 		$(srcdir)/Include/internal/pycore_ceval.h \
 		$(srcdir)/Include/internal/pycore_context.h \

Modules/_io/stringio.c

 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "structmember.h"
-#include "accu.h"
+#include "pycore_accu.h"
 #include "_iomodule.h"
 
 /* Implementation note: the buffer is always at least one character longer

Modules/_json.c

@@ -7,7 +7,7 @@
 
 #include "Python.h"
 #include "structmember.h"
-#include "accu.h"
+#include "pycore_accu.h"
 
 #ifdef __GNUC__
 #define UNUSED __attribute__((__unused__))

Objects/accu.c

 /* Accumulator struct implementation */
 
 #include "Python.h"
-#include "accu.h"
+#include "pycore_accu.h"
 
 static PyObject *
 join_list_unicode(PyObject *lst)

Objects/listobject.c

@@ -2,7 +2,7 @@
 
 #include "Python.h"
 #include "pycore_state.h"
-#include "accu.h"
+#include "pycore_accu.h"
 
 #ifdef STDC_HEADERS
 #include <stddef.h>

Objects/tupleobject.c

@@ -3,7 +3,7 @@
 
 #include "Python.h"
 #include "pycore_state.h"
-#include "accu.h"
+#include "pycore_accu.h"
 
 /*[clinic input]
 class tuple "PyTupleObject *" "&PyTuple_Type"

PCbuild/pythoncore.vcxproj

@@ -79,7 +79,6 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="..\Include\abstract.h" />
-    <ClInclude Include="..\Include\accu.h" />
     <ClInclude Include="..\Include\asdl.h" />
     <ClInclude Include="..\Include\ast.h" />
     <ClInclude Include="..\Include\bitset.h" />
@@ -112,6 +111,7 @@
     <ClInclude Include="..\Include\graminit.h" />
     <ClInclude Include="..\Include\grammar.h" />
     <ClInclude Include="..\Include\import.h" />
+    <ClInclude Include="..\Include\internal\pycore_accu.h" />
     <ClInclude Include="..\Include\internal\pycore_atomic.h" />
     <ClInclude Include="..\Include\internal\pycore_ceval.h" />
     <ClInclude Include="..\Include\internal\pycore_condvar.h" />
@@ -154,7 +154,6 @@
     <ClInclude Include="..\Include\pyerrors.h" />
     <ClInclude Include="..\Include\pyexpat.h" />
     <ClInclude Include="..\Include\pyfpe.h" />
-    <ClInclude Include="..\Include\internal\pygetopt.h" />
     <ClInclude Include="..\Include\pylifecycle.h" />
     <ClInclude Include="..\Include\pymath.h" />
     <ClInclude Include="..\Include\pytime.h" />

PCbuild/pythoncore.vcxproj.filters

@@ -36,9 +36,6 @@
     <ClInclude Include="..\Include\abstract.h">
       <Filter>Include</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\accu.h">
-      <Filter>Include</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\asdl.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -135,6 +132,9 @@
     <ClInclude Include="..\Include\import.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_accu.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_atomic.h">
       <Filter>Include</Filter>
     </ClInclude>