1 files changed, 38 insertions, 0 deletions
diff --git a/src/stack.c b/src/stack.c
new file mode 100644
index 0000000..5c4d0ca
--- /dev/null
+++ b/src/stack.c
@@ -0,0 +1,38 @@
+#include "include/stack.h"
+
+stack_t* stack_init() {
+   stack_t* stack = emalloc(sizeof(stack_t));
+   
+   stack->sp = 0;
+   for (int i = 0; i < STACK_MAXLEN; stack->val[i++] = 0);
+   
+   return stack;
+}
+
+void stack_destroy(stack_t* stack) {
+   free(stack);
+}
+
+void stack_push(stack_t* stack, void* val) {
+   stack->val[stack->sp++] = val;
+}
+
+void* stack_pop(stack_t* stack) {
+   void* tmpval;
+
+   tmpval = stack->val[--stack->sp];
+   stack->val[stack->sp] = NULL;
+
+   return tmpval;
+}
+
+size_t stack_len(stack_t* stack) {
+   return stack->sp - 1;
+}
+
+void stack_print(stack_t* stack) {
+   log_inf("stack_print(): %p", stack);
+   for (int i = stack_len(stack) - 1; i >= 0; --i) {
+      log_inf("%d: %p", i, stack[i]);
+   }
+}