added stack datatype to std

src/std/stack.c

@@ -0,0 +1,70 @@
+#include "arc/std/stack.h"
+
+#include "arc/std/errno.h"
+#include <stdlib.h>
+
+typedef struct ARC_StackNode ARC_StackNode;
+
+struct ARC_StackNode {
+    ARC_StackNode *next;
+    void *data;
+};
+
+struct ARC_Stack {
+    uint32_t currentSize;
+    ARC_StackNode *node;
+};
+
+void ARC_Stack_Create(ARC_Stack **stack){
+    *stack = (ARC_Stack *)malloc(sizeof(ARC_Stack));
+    (*stack)->currentSize = 0;
+    (*stack)->node = NULL;
+}
+
+void ARC_Stack_Destroy(ARC_Stack *stack){
+    if(stack->currentSize != 0 || stack->node != NULL){
+        arc_errno = ARC_ERRNO_DATA;
+        ARC_DEBUG_ERR("ARC_Stack_Destroy called, but stack was not empty");
+        return;
+    }
+
+    free(stack);
+}
+
+void ARC_Stack_Push(ARC_Stack *stack, void *data){
+    ARC_StackNode *node = (ARC_StackNode *)malloc(sizeof(ARC_StackNode));
+    node->data = data;
+    node->next = NULL;
+
+    node->next = stack->node;
+    stack->node = node;
+
+    stack->currentSize++;
+}
+
+void *ARC_Stack_Pop(ARC_Stack *stack){
+    if(stack->currentSize == 0){
+        arc_errno = ARC_ERRNO_DATA;
+        ARC_DEBUG_ERR("ARC_Stack_Pop called, but stack was not empty");
+        return NULL;
+    }
+
+    ARC_StackNode *node = stack->node;
+    if(node == NULL){
+        arc_errno = ARC_ERRNO_NULL;
+        ARC_DEBUG_ERR("ARC_Stack_Pop called, but node was NULL");
+        return NULL;
+    }
+
+    stack->node = node->next;
+    void *nodeData = node->data;
+    free(node);
+
+    stack->currentSize--;
+
+    return nodeData;
+}
+
+uint32_t ARC_Stack_Size(ARC_Stack *stack){
+    return stack->currentSize;
+}