changement dossier

Aloyse et Vincent/type_stack.c

@@ -0,0 +1,73 @@
+
+#include "type_stack.h"
+
+/************************/
+/* Fonctions primitives */
+/************************/
+
+static void grow_stack(stack *thestack) {
+  thestack->array =
+      realloc(thestack->array, 2 * thestack->size_array * sizeof(void *));
+  if (thestack->array == NULL) {
+    ERROR("Erreur d'allocation mémoire");
+  }
+  thestack->size_array = 2 * thestack->size_array;
+}
+
+static void shrink_stack(stack *thestack) {
+  thestack->array =
+      realloc(thestack->array, thestack->size_array * sizeof(void *) / 2);
+  if (thestack->array == NULL) {
+    ERROR("Erreur d'allocation mémoire");
+  }
+  thestack->size_array = thestack->size_array / 2;
+}
+
+/* Création */
+stack *create_stack(void) {
+  stack *thestack = malloc(sizeof(stack));
+  thestack->size_array = 1;
+  thestack->size_stack = 0;
+  thestack->array = malloc(sizeof(void *));
+  return thestack;
+}
+
+/* Suppression */
+void delete_stack(stack *thestack) {
+  free(thestack->array);
+  free(thestack);
+}
+
+/* Test du vide */
+bool isempty_stack(stack *thestack) {
+  return thestack->size_stack == 0;
+}
+
+/* Taille*/
+uint size_stack(stack *thestack) { return thestack->size_stack; }
+
+/* Lecture */
+void *read_stack(stack *thestack, const uint index) { return thestack->array[index]; }
+
+/*  Dépiler */
+void *pop(stack *thestack) {
+  if (isempty_stack(thestack)) {
+    ERROR("La pile est vide.");
+  }
+  void *v = thestack->array[(thestack->size_stack) - 1];
+  thestack->size_stack -= 1;
+  if (thestack->size_stack <= thestack->size_array / 4 &&
+      thestack->size_array > 1) {
+    shrink_stack(thestack);
+  }
+  return v;
+}
+
+/* Empiler */
+void push(void *val, stack *thestack) {
+  if (thestack->size_array <= thestack->size_stack) {
+    grow_stack(thestack);
+  }
+  thestack->size_stack += 1;
+  thestack->array[thestack->size_stack - 1] = val;
+}