Refactor Extension Modules (#53346)

* Working refactor with setuptools

* Meson updates

* fixed missing source files

* Missing graft

Author: WillAyd

.pre-commit-config.yaml

@@ -65,11 +65,7 @@ repos:
     rev: 1.6.1
     hooks:
     -   id: cpplint
-        # We don't lint all C files because we don't want to lint any that are built
-        # from Cython files nor do we want to lint C files that we didn't modify for
-        # this particular codebase (e.g. src/headers, src/klib). However,
-        # we can lint all header files since they aren't "generated" like C files are.
-        exclude: ^pandas/_libs/src/(klib|headers)/
+        exclude: ^pandas/_libs/include/pandas/vendored/klib
         args: [
             --quiet,
             '--extensions=c,h',

MANIFEST.in

@@ -57,6 +57,4 @@ prune pandas/tests/io/parser/data
 
 # Selectively re-add *.cxx files that were excluded above
 graft pandas/_libs/src
-graft pandas/_libs/tslibs/src
-include pandas/_libs/pd_parser.h
-include pandas/_libs/pd_parser.c
+graft pandas/_libs/include

pandas/_libs/tslibs/src/datetime/date_conversions.h renamed to pandas/_libs/include/pandas/datetime/date_conversions.h

@@ -22,9 +22,9 @@ See NUMPY_LICENSE.txt for the license.
 #endif  // NPY_NO_DEPRECATED_API
 
 #include <numpy/ndarraytypes.h>
-#include "np_datetime.h"
-#include "np_datetime_strings.h"
-#include "date_conversions.h"
+#include "pandas/vendored/numpy/datetime/np_datetime.h"
+#include "pandas/vendored/numpy/datetime/np_datetime_strings.h"
+#include "pandas/datetime/date_conversions.h"
 
 #ifdef __cplusplus
 extern "C" {

pandas/_libs/tslibs/src/datetime/pd_datetime.h renamed to pandas/_libs/include/pandas/datetime/pd_datetime.h

@@ -14,7 +14,7 @@ extern "C" {
 
 #define PY_SSIZE_T_CLEAN
 #include <Python.h>
-#include "src/parser/tokenizer.h"
+#include "pandas/parser/tokenizer.h"
 
 typedef struct {
   int (*to_double)(char *, double *, char, char, int *);

pandas/_libs/src/inline_helper.h renamed to pandas/_libs/include/pandas/inline_helper.h

@@ -19,10 +19,10 @@ See LICENSE for the license
 #define ERROR_INVALID_CHARS 3
 
 #include <stdint.h>
-#include "../inline_helper.h"
-#include "../headers/portable.h"
+#include "pandas/inline_helper.h"
+#include "pandas/portable.h"
 
-#include "khash.h"
+#include "pandas/vendored/klib/khash.h"
 
 #define STREAM_INIT_SIZE 32
 

pandas/_libs/src/parser/io.h renamed to pandas/_libs/include/pandas/parser/io.h

@@ -1,9 +1,18 @@
+/*
+Copyright (c) 2016, PyData Development Team
+All rights reserved.
+
+Distributed under the terms of the BSD Simplified License.
+
+The full license is in the LICENSE file, distributed with this software.
+*/
+
 #pragma once
 
 #include <string.h>
 
 #if defined(_MSC_VER)
-#define strcasecmp( s1, s2 ) _stricmp( s1, s2 )
+#define strcasecmp(s1, s2) _stricmp(s1, s2)
 #endif
 
 // GH-23516 - works around locale perf issues

pandas/_libs/pd_parser.h renamed to pandas/_libs/include/pandas/parser/pd_parser.h

@@ -19,7 +19,7 @@ Python recipe (https://rhettinger.wordpress.com/2010/02/06/lost-knowledge/)
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "inline_helper.h"
+#include "pandas/inline_helper.h"
 
 PANDAS_INLINE float __skiplist_nanf(void) {
     const union {