updates

core.h

@@ -2,10 +2,8 @@
 #define CORE_H
 
 // cstdlib includes
-#include "math.h"
 #include "stdbool.h"
 #include "stdint.h" // necessary for int type sizes
-#include "stdio.h"
 #include "time.h" // TODO(djledda): try not to depend on this one
 
 // ### Misc macros ###
@@ -139,7 +137,7 @@ inline function Vec4 vec4(real32 x, real32 y, real32 z, real32 w) {
     typedef struct {\
         type* data;\
         size_t length;\
-        size_t head;\
+        size_t capacity;\
     } prefix ## List
 
 DefineList(string, String);
@@ -152,12 +150,14 @@ DefineList(string, String);
 #define ArrayAsList(type, array) (type){ array, ArrayCount(array), ArrayCount(array) }
 
 #define AppendList(list, element) \
-    if ((list)->head < (list)->length) { \
-        (list)->data[(list)->head++] = (element); \
+    if ((list)->length < (list)->capacity) { \
+        (list)->data[(list)->length++] = (element); \
     }
-#define ZeroListFull(list) memset((list)->data, 0, (list)->head * sizeof(T))
-#define ZeroList(list) (list)->head = 0; \
-    memset((list)->data, 0, (list)->head * sizeof(T));
+#define ZeroListFull(list) memset((list)->data, 0, (list)->length * sizeof(T))
+#define ZeroList(list) (list)->length = 0; \
+    memset((list)->data, 0, (list)->length * sizeof(T));
+#define ListSlice(list, start, stop) (stop > list.length || start > stop ? {0} : { list.data + start, stop - start, stop - start, })
+#define ListTail(list, start) ListSlice(list, list.length)
 
 // ### Strings ###
 struct string {
@@ -189,9 +189,16 @@ StringList strSplit(Arena *arena, string splitStr, string inputStr);
 string strPrintfv(Arena *arena, const char *fmt, va_list args);
 string strPrintf(Arena *arena, const char *fmt, ...);
 
-typedef struct { uint8 result; bool valid; } ParsePositiveIntResult;
+typedef struct {
+    uint8 result;
+    bool valid;
+} ParsePositiveIntResult;
 ParsePositiveIntResult parsePositiveInt(string str, size_t *lengthPointer);
-typedef struct { real32 result; bool valid; } ParsePositiveReal32Result;
+
+typedef struct {
+    real32 result;
+    bool valid;
+} ParsePositiveReal32Result;
 ParsePositiveReal32Result parsePositiveReal32(string str, size_t *lengthPointer);
 
 inline function bool isNumeric(char c);
@@ -272,8 +279,8 @@ void printStrList(StringList l);
 extern void (*print)(const char *fmt, ...);
 
 // ### Loops ###
-#define EachIn(list, it) size_t it = 0; it < (list).head; it++
-#define EachInReversed(list, it) size_t it = (list).head - 1; it >= 0 && it < (list).head; it--
+#define EachIn(list, it) size_t it = 0; it < (list).length; it++
+#define EachInReversed(list, it) size_t it = (list).length - 1; it >= 0 && it < (list).length; it--
 #define EachInArray(arr, it)  size_t it = 0; it < ArrayCount(arr); ++it
 
 // ### Misc ###