update

core.cpp

@@ -1,9 +1,10 @@
-#include <unistd.h> // TODO(djledda): get outta here
 #include <math.h>
 #include <string.h>
-#define STB_SPRINTF_IMPLEMENTATION
+#include <unistd.h>
 #include "core.h"
 #include "os.cpp"
+#define STB_SPRINTF_IMPLEMENTATION
+#include "vendor/stb_sprintf.h"
 
 void *pushSize(Arena *arena, size_t bytes) {
     if (arena->capacity - arena->head >= bytes) {
@@ -30,6 +31,10 @@ void arenaFreeFrom(Arena *arena, size_t position) {
     arena->head = position;
 }
 
+void arenaPopTo(Arena *arena, void *position) {
+    arena->head = (byte *)position - (byte *)arena->memory;
+}
+
 Arena *scratchArenas[2];
 
 void initialiseCore() {
@@ -86,7 +91,7 @@ void zeroList(list<T> *list) {
     memset(list->data, 0, list->head * sizeof(T));
 }
 
-inline string operator""_s(const char *cstrLiteral, unsigned long length) {
+inline string operator""_s(const char *cstrLiteral, size_t length) {
     return {
         (char *)cstrLiteral,
         length,
@@ -292,6 +297,7 @@ real32 parsePositiveReal32(string str, size_t *lengthPointer) {
         *lengthPointer += 1;
         int fractionalPart = parsePositiveInt(fractionalPartStr, lengthPointer);
         if (wholePart >= 0 && fractionalPart >= 0) {
+            // TODO(dledda): implement powf with intrinsics? or just custom
             real32 fractionalPartMultiplier = 1.0f / powf(10.0f, (real32)fractionalPartStr.length);
             result = (real32)wholePart + (real32)fractionalPart * (real32)fractionalPartMultiplier;
         }