Added ehan error handling

da.h

@@ -6,6 +6,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define EHAN_IMPLEMENTATION
+#include "ehan.h"
+
 enum daFields {
     SIZE          = 0,
     CAPACITY      = 1,
@@ -14,8 +17,10 @@ enum daFields {
 };
                                        
 typedef void * dynarr;
-dynarr _daCreate(size_t initCapacity, size_t type, size_t size);
+GenericReturn _daCreate(size_t initCapacity, size_t type, size_t size);
-dynarr _daPush(dynarr da, void * item);
+GenericReturn _daPush(dynarr * da, void * item);
+GenericReturn daCopy(dynarr da);
+GenericReturn daResize(dynarr da);
 void _daPop(dynarr da, void * element);
 void daPopDiscard(dynarr da);
 void daFree(dynarr da);
@@ -36,21 +41,24 @@ 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_
            
 #ifdef DA_IMPLEMENTATION 
 
-dynarr _daCreate(size_t cap, size_t type, size_t size)
+GenericReturn _daCreate(size_t cap, size_t type, size_t size)
 {
     size_t * da = (size_t *) malloc(type * cap + DATA * sizeof(size_t));
+    if (da == NULL)
+        ehanError("Failed to allocate resources for a dynamic array!");
+
     da[SIZE] = size;
     da[CAPACITY] = cap;
     da[TYPE] = type;
 
-    return (dynarr) (da + DATA);
+    return ehanValue((dynarr) (da + DATA));
 }                        
 
 void daFree(dynarr da)
@@ -58,27 +66,54 @@ void daFree(dynarr da)
     free((size_t *) da - DATA);
 }
 
-dynarr daCopy(dynarr da)
+GenericReturn daCopy(dynarr da)
 {
-    dynarr temp = _daCreate(daCap(da), daType(da), daSize(da));
+    if (da == NULL)
-    memcpy(temp, da, daSize(da) * daType(da));
+        ehanError("Expected: 'dynarr' got 'NULL'");
-    return temp;
+
+    GenericReturn temp = _daCreate(daCap(da), daType(da), daSize(da));
+
+    if (ehanCheck(temp))
+        return ehanError(resultError(temp));
+
+    dynarr newArr = resultGeneric(dynarr, temp);
+
+    memcpy(newArr, da, daSize(da) * daType(da));
+    return ehanValue(newArr);
 }
 
-dynarr daResize(dynarr da)
+GenericReturn daResize(dynarr da)
 {
-    dynarr temp = _daCreate(daCap(da) * 2, daType(da), daSize(da));
+    if (da == NULL)
-    memcpy(temp, da, daSize(da) * daType(da));
+        ehanError("Expected: 'dynarr' got 'NULL'");
+
+    GenericReturn temp = _daCreate(daCap(da) * 2, daType(da), daSize(da));
+
+    if (ehanCheck(temp))
+        return ehanError(resultError(temp));
+
+    dynarr newArr = resultGeneric(dynarr, temp);
+
+    memcpy(newArr, da, daSize(da) * daType(da));
     daFree(da);
-    return temp;
+    return ehanValue(newArr);
 }
 
-dynarr _daPush(dynarr da, void * item)
+GenericReturn _daPush(dynarr * da, void * item)
 {
-    if (daSize(da) >= daCap(da)) da = daResize(da);
+    if (daSize(*da) >= daCap(*da))
-    memcpy((char *)da + daSize(da) * daType(da), item, daType(da));
+    {
-    *daField(da, SIZE) += 1;
+        GenericReturn temp = daResize(*da);
-    return da;
+
+        if (ehanCheck(temp))
+            return ehanError(resultError(temp));
+
+        *da = resultGeneric(dynarr, temp);
+    }
+
+    memcpy((char *)(*da) + daSize(*da) * daType(*da), item, daType(*da));
+    *daField(*da, SIZE) += 1;
+    return ehanValue(*da);
 }
 
 void _daPop(dynarr da, void * elem)

ehan.h

@@ -0,0 +1,84 @@
+#ifndef EHAN_H_
+#define EHAN_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+typedef struct GenericReturn {
+    long double fp;
+    void * val;
+    const char * err;
+} GenericReturn;
+
+GenericReturn ehanError(const char * error);
+GenericReturn _ehanValue(void * value);
+GenericReturn _ehanValueFP(long double value);
+#define ehanValue(v) _ehanValue((void *) v)
+#define ehanValueFP(fp) _ehanValueFP((long double) fp)
+
+#define resultGeneric(type, ret) (*(type *) &(ret.val))
+#define resultFP(type, ret) ((type) (ret.fp))
+#define resultError(ret) (ret.err)
+
+#define ehanCheck(ret) strlen(ret.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 = "",
+    };
+}
+
+GenericReturn _ehanValueFP(long double value)
+{
+    return (GenericReturn) {
+        .fp = value,
+        .val = 0,
+        .err = "",
+    };
+}
+
+GenericReturn ehanError(const char * error)
+{
+    return (GenericReturn) {
+        .val = 0,
+        .err = error,
+    };
+}
+
+#endif // EHAN_IMPLEMENTATION
+
+#endif // EHAN_H_

example.c

@@ -3,6 +3,9 @@
 #define DA_IMPLEMENTATION
 #include "da.h"
 
+#define EHAN_IMPLEMENTATION
+#include "ehan.h"
+
 void printDaU16(void * item)
 {
     printf("%hu\n", *((unsigned short *) item));
@@ -19,7 +22,7 @@ int main(void)
     printf("DA1\n");
     printf("----------\n");
 
-    dynarr(unsigned short) * da = daCreate(unsigned short, 1);
+    dynarr(unsigned short) da = daCreate(unsigned short, 1).val;
 
     unsigned short x = 69;
     daPush(da, x);
@@ -45,7 +48,7 @@ int main(void)
     printf("DA2\n");
     printf("----------\n");
 
-    dynarr(char) da2 = daCreate(char, 1);
+    dynarr(char) da2 = daCreate(char, 1).val;
 
     char y = 'H';
     daPush(da2, y);
@@ -61,6 +64,8 @@ int main(void)
     daPush(da2, y);
     y = '?';
     daPush(da2, y);
+    y = '?';
+    daPush(da2, y);
 
     *(char *)daGetRef(da2, 6) = '!';