Formalized the macro magic that actually works into sharedbits/{start,end}.h. Now to do arrays!

sharedbits/TODO.md

@@ -0,0 +1,4 @@
+- figure out how to tell meson to look here for changes, if I need to
+- document this properly (I should also write development documentation for all of libui in general...)
+	- note that none of these files should have include guards
+- figure out if we can macro-ize macro names (likely not)

sharedbits/alloc_header.h

@@ -1,11 +1,6 @@
 // 30 may 2019
 
-#ifndef sharedbitsPrefix
-#error you must define sharedbitsPrefix before including this
-#endif
-#define sharedbitsPrefixMakeName(x, y) x ## y
-#define sharedbitsPrefixExpandMakeName(x, y) sharedbitsPrefixMakeName(x, y)
-#define sharedbitsPrefixName(Name) sharedbitsPrefixExpandMakeName(sharedbitsPrefix, Name)
+#include "start.h"
 
 extern void *sharedbitsPrefixName(Alloc)(size_t n, const char *what);
 extern void *sharedbitsPrefixName(Realloc)(void *p, size_t nOld, size_t nNew, const char *what);
@@ -19,6 +14,4 @@ you may also want to define the following:
 #define sharedbitsPrefixName(ResizeArray)(x, T, old, new) ((T *) sharedbitsPrefix ## Realloc(x, old * sizeof (T), new * sizeof (T), #T "[]"))
 */
 
-#undef sharedbitsPrefixName
-#undef sharedbitsPrefixExpand
-#undef sharedbitsPrefixMakeName
+#include "end.h"

sharedbits/alloc_impl.h

@@ -1,12 +1,7 @@
 // 30 may 2019
 // requires: alloc_header.h
 
-#ifndef sharedbitsPrefix
-#error you must define sharedbitsPrefix before including this
-#endif
-#define sharedbitsPrefixMakeName(x, y) x ## y
-#define sharedbitsPrefixExpandMakeName(x, y) sharedbitsPrefixMakeName(x, y)
-#define sharedbitsPrefixName(Name) sharedbitsPrefixExpandMakeName(sharedbitsPrefix, Name)
+#include "start.h"
 
 extern void sharedbitsPrefixName(InternalError)(const char *fmt, ...);
 
@@ -36,6 +31,4 @@ void sharedbitsPrefixName(Free)(void *p)
 	free(p);
 }
 
-#undef sharedbitsPrefixName
-#undef sharedbitsPrefixExpand
-#undef sharedbitsPrefixMakeName
+#include "end.h"

sharedbits/array_header.h

@@ -1,13 +1,6 @@
 // 30 may 2019
 // requires: alloc_header.h
 
-#ifndef sharedbitsPrefix
-#error you must define sharedbitsPrefix before including this
-#endif
-#define sharedbitsPrefixMakeName(x, y) x ## y
-#define sharedbitsPrefixExpand(x) x
-#define sharedbitsPrefixName(Name) sharedbitsPrefixMakeName(sharedbitsPrefixExpand(sharedbitsPrefix), Name)
+#include "start.h"
 
-#undef sharedbitsPrefixName
-#undef sharedbitsPrefixExpand
-#undef sharedbitsPrefixMakeName
+#include "end.h"

sharedbits/array_impl.h

@@ -1,13 +1,6 @@
 // 30 may 2019
 // requires: array_header.h
 
-#ifndef sharedbitsPrefix
-#error you must define sharedbitsPrefix before including this
-#endif
-#define sharedbitsPrefixMakeName(x, y) x ## y
-#define sharedbitsPrefixExpand(x) x
-#define sharedbitsPrefixName(Name) sharedbitsPrefixMakeName(sharedbitsPrefixExpand(sharedbitsPrefix), Name)
+#include "start.h"
 
-#undef sharedbitsPrefixName
-#undef sharedbitsPrefixExpand
-#undef sharedbitsPrefixMakeName
+#include "end.h"

sharedbits/end.h

@@ -0,0 +1,5 @@
+// 30 may 2019
+
+#undef sharedbitsPrefixName
+#undef sharedbitsPrefixExpandMakeName
+#undef sharedbitsPrefixMakeName

sharedbits/start.h

@@ -0,0 +1,8 @@
+// 30 may 2019
+
+#ifndef sharedbitsPrefix
+#error you must define sharedbitsPrefix before including this
+#endif
+#define sharedbitsPrefixMakeName(x, y) x ## y
+#define sharedbitsPrefixExpandMakeName(x, y) sharedbitsPrefixMakeName(x, y)
+#define sharedbitsPrefixName(Name) sharedbitsPrefixExpandMakeName(sharedbitsPrefix, Name)