1 files changed, 56 insertions, 0 deletions
diff --git a/src/common/stack_core.c b/src/common/stack_core.c
new file mode 100644
index 0000000..6875862
--- /dev/null
+++ b/src/common/stack_core.c
@@ -0,0 +1,56 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   stack_core.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 06:37:45 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 06:50:50 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "common.h"
+
+t_stack *stack_new(int size)
+{
+	t_stack *stack;
+
+	if ((stack = (t_stack*)malloc(sizeof(t_stack))) == NULL)
+		return (NULL);
+	if ((stack->elements = (int*)malloc(sizeof(int) * size)) == NULL)
+	{
+		free(stack);
+		return (NULL);
+	}
+	stack->top = -1;
+	return (stack);
+}
+
+void stack_destroy(t_stack *stack)
+{
+	if (stack == NULL)
+		return ;
+	free(stack->elements);
+	free(stack);
+}
+
+void stack_push(t_stack *stack, int n)
+{
+	stack->top++;
+	stack->elements[stack->top] = n;
+}
+
+void stack_pop(t_stack *stack)
+{
+	if (stack_empty(stack))
+		return ;
+	stack->top--;
+}
+
+int  stack_peek(t_stack *stack)
+{
+	if (stack_empty(stack))
+		return (0);
+	return (stack->elements[stack->top]);
+}