Initialized ehan.h and some other minor changes

da.h

@@ -6,6 +6,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define EHAN_IMPLEMENTATION
+#include "ehan.h"
+
 enum daFields {
     SIZE          = 0,
     CAPACITY      = 1,
@@ -15,7 +18,7 @@ enum daFields {
                                        
 typedef void * dynarr;
 dynarr _daCreate(size_t initCapacity, size_t type, size_t size);
-dynarr _daPush(dynarr da, void * item);
+size_t _daPush(dynarr * da, void * item);
 void _daPop(dynarr da, void * element);
 void daPopDiscard(dynarr da);
 void daFree(dynarr da);
@@ -36,7 +39,7 @@ void daBzero(dynarr da);
 
 #define dynarr(type) type *
 #define daCreate(type, cap) _daCreate(cap, sizeof(type), 0)
-#define daPush(da, item) da = _daPush(da, &item)
+#define daPush(da, item) _daPush((void **) &da, &item)
 #define daPop(da, item) _daPop(da, &item)
 
 #endif // DA_H_
@@ -45,7 +48,11 @@ void daBzero(dynarr da);
 
 dynarr _daCreate(size_t cap, size_t type, size_t size)
 {
+    if (cap == 0) cap = 1;
+
     size_t * da = (size_t *) malloc(type * cap + DATA * sizeof(size_t));
+    if (da == NULL) return NULL;
+
     da[SIZE] = size;
     da[CAPACITY] = cap;
     da[TYPE] = type;
@@ -55,12 +62,15 @@ dynarr _daCreate(size_t cap, size_t type, size_t size)
 
 void daFree(dynarr da)
 {
+    if (da == NULL) return;
     free((size_t *) da - DATA);
 }
 
 dynarr daCopy(dynarr da)
 {
     dynarr temp = _daCreate(daCap(da), daType(da), daSize(da));
+    if (temp == NULL) return NULL;
+
     memcpy(temp, da, daSize(da) * daType(da));
     return temp;
 }
@@ -68,17 +78,25 @@ dynarr daCopy(dynarr da)
 dynarr daResize(dynarr da)
 {
     dynarr temp = _daCreate(daCap(da) * 2, daType(da), daSize(da));
+    if (temp == NULL) return NULL;
+
     memcpy(temp, da, daSize(da) * daType(da));
     daFree(da);
     return temp;
 }
 
-dynarr _daPush(dynarr da, void * item)
+size_t _daPush(dynarr * da, void * item)
 {
-    if (daSize(da) >= daCap(da)) da = daResize(da);
-    memcpy((char *)da + daSize(da) * daType(da), item, daType(da));
-    *daField(da, SIZE) += 1;
-    return da;
+    if (daSize(*da) >= daCap(*da))
+    {
+        dynarr resized = daResize(*da);
+        if (resized == NULL) return 1;
+        *da = resized;
+    }
+
+    memcpy((char *)*da + daSize(*da) * daType(*da), item, daType(*da));
+    *daField(*da, SIZE) += 1;
+    return 0;
 }
 
 void _daPop(dynarr da, void * elem)
@@ -131,6 +149,8 @@ void daForeach(dynarr da, func f)
 heapstr daToCStr(dynarr da)
 {
     char * buffer = (char *) calloc(1, daSize(da) + 1);
+    if (buffer == NULL) return NULL;
+
     memcpy(buffer, da, daSize(da) * daType(da));
     return buffer;
 }

ehan.h

@@ -0,0 +1,87 @@
+#ifndef EHAN_H_
+#define EHAN_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+
+typedef struct GenericReturn {
+    long double fp;
+    void * val;
+    size_t err;
+} GenericReturn;
+
+GenericReturn ehanError(size_t error);
+#define ehanValue(v) _ehanValue((void *) v)
+#define ehanValueFP(fp) _ehanValueFP((long double) fp)
+GenericReturn _ehanValue(void * value);
+GenericReturn _ehanValueFP(long double value);
+
+#define resultGeneric(type, ret) (*(type *) (&ret.val))
+#define resultFP(type, ret) ((type) (ret.fp))
+
+const char * errorToString(const char * errorList[], size_t err);
+
+#define ILog(format, ...)                                                                        \
+do {                                                                                             \
+fprintf(stderr, "\x1b[34m""info""\x1b[0m"":%s:%d:  " format, __FILE__, __LINE__, ##__VA_ARGS__); \
+} while (0)                                                                 
+
+#define WLog(format, ...)                                                                        \
+do {                                                                                             \
+fprintf(stderr, "\x1b[33m""warn""\x1b[0m"":%s:%d:  " format, __FILE__, __LINE__, ##__VA_ARGS__); \
+} while (0)                                                                 
+
+#define ELog(format, ...)                                                                        \
+do {                                                                                             \
+fprintf(stderr, "\x1b[31m""error""\x1b[0m"":%s:%d: " format, __FILE__, __LINE__, ##__VA_ARGS__); \
+} while (0)                                                                 
+
+#ifdef NDEBUG
+
+#define DLog(format, ...)
+
+#else
+
+#define DLog(format, ...)                                                                        \
+do {                                                                                             \
+fprintf(stderr, "\x1b[32m""debug""\x1b[0m"":%s:%d: " format, __FILE__, __LINE__, ##__VA_ARGS__); \
+} while (0)                                                                 
+
+#endif
+
+#ifdef EHAN_IMPLEMENTATION
+
+GenericReturn _ehanValue(void * value)
+{
+    return (GenericReturn) {
+        .val = value,
+        .err = 0,
+    };
+}
+
+GenericReturn _ehanValueFP(long double value)
+{
+    return (GenericReturn) {
+        .fp = value,
+        .val = 0,
+        .err = 0,
+    };
+}
+
+GenericReturn ehanError(size_t error)
+{
+    return (GenericReturn) {
+        .val = 0,
+        .err = error,
+    };
+}
+
+const char * errorToString(const char * errorList[], size_t err)
+{
+    return errorList[err - 1];
+}
+
+#endif // EHAN_IMPLEMENTATION
+
+#endif // EHAN_H_

example.c

@@ -19,12 +19,16 @@ int main(void)
     printf("DA1\n");
     printf("----------\n");
 
-    dynarr(unsigned short) * da = daCreate(unsigned short, 1);
+    dynarr(unsigned short) da = daCreate(unsigned short, 1);
 
     unsigned short x = 69;
-    daPush(da, x);
+    if (daPush(da, x) > 0)
+        goto cleanup;
+
     x = 42069;
-    daPush(da, x);
+    if (daPush(da, x) > 0)
+        goto cleanup;
+
     x = 1337;
     daPush(da, x);
     x = 34;
@@ -69,8 +73,25 @@ int main(void)
     heapstr message = daToCStr(da2);
 
     printf("%s\n", message);
-    free(message);
 
+    printf("----------\n");
+    printf("DA3\n");
+    printf("----------\n");
+
+    dynarr(char *) da3 = daCreate(char *, 1);
+
+    const char * someString = "Test";
+    for (size_t i = 0; i < 100000000; ++i) {
+        daPush(da3, someString);
+    }
+
+    char * str;
+    daPop(da3, str);
+    printf("%s\n", str);
+
+cleanup:
+    free(message);
     daFree(da);
     daFree(da2);
+    daFree(da3);
 }