Initial independent commit

1 files changed, 49 insertions, 0 deletions

diff --git a/include/engine/stack.h b/include/engine/stack.h
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+/* Copyright © 2021 Upqwerk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the “Software”), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * */
+
+/* Stack implementation
+ * Author: Upqwerk
+ */
+#ifndef STACK_H
+#define STACK_H
+
+#include "types.h"
+
+typedef struct {
+  isize       head;       /* current number of elements */
+  const usize elem_size;  /* size in bytes of each element */
+  usize       size;       /* current memory size used by the stack */
+  const usize chunk_size; /* size of which the stack increases when running out of mem */
+  void        *data;       /* memory buffer */
+} Stack;
+
+Stack stack_new_ex(const usize element_size, const usize size);
+
+Stack stack_new(const usize element_size);
+
+void stack_free(Stack *s);
+void *stack_pop(Stack *s);
+void stack_push(Stack *s, void *elem);
+void *stack_peek(Stack *s);
+isize stack_size(const Stack *s);
+void stack_swap(Stack *s, Stack *t);
+
+#endif