1 files changed, 79 insertions, 0 deletions
diff --git a/src/data/stack.h b/src/data/stack.h
new file mode 100644
index 0000000..395dd32
--- /dev/null
+++ b/src/data/stack.h
@@ -0,0 +1,79 @@
+/*:*
+ *: File: ./src/data/stack.h
+ *: A simple Fype interpreter
+ *:
+ *: WWW: http://fype.buetow.org
+ *: AUTHOR: http://paul.buetow.org
+ *: E-Mail: fype at dev.buetow.org
+ *:
+ *: The Fype Language; (c) 2005 - 2010 - Dipl.-Inform. (FH) Paul C. Buetow
+ *:
+ *: Redistribution and use in source and binary forms, with or without modi-
+ *: fication, are permitted provided that the following conditions are met:
+ *:  * Redistributions of source code must retain the above copyright
+ *:    notice, this list of conditions and the following disclaimer.
+ *:  * Redistributions in binary form must reproduce the above copyright
+ *:    notice, this list of conditions and the following disclaimer in the
+ *:    documentation and/or other materials provided with the distribution.
+ *:  * Neither the name of buetow.org nor the names of its contributors may
+ *:    be used to endorse or promote products derived from this software
+ *:    without specific prior written permission.
+ *:
+ *: THIS SOFTWARE IS PROVIDED BY PAUL C. BUETOW AS IS'' AND ANY EXPRESS OR
+ *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ *: WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *: DISCLAIMED. IN NO EVENT SHALL PAUL C. BUETOW BE LIABLE FOR ANY DIRECT,
+ *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *: POSSIBILITY OF SUCH DAMAGE.
+ *:*/
+
+#ifndef STACK_H
+#define STACK_H
+
+#include <stdlib.h>
+
+typedef struct StackElem_ {
+   struct StackElem_ *p_next;
+   void *p_val;
+} StackElem;
+
+typedef struct {
+   StackElem *p_first;
+   StackElem *p_last; // Only needed for stack_merge
+   unsigned i_size;
+} Stack;
+
+typedef struct {
+   StackElem *p_current;
+   StackElem *p_prev;
+} StackIterator;
+
+Stack *stack_new();
+StackElem *stackelem_new();
+_Bool stack_empty(Stack *p_stack);
+void stack_iterate(Stack *p_stack, void (*func)(void *p_void));
+void stack_iterate2(Stack *p_stack, void (*func)(void *p_void, void *p_void2),
+                    void *p_void_arg);
+void stack_iterate_level(Stack *p_stack, void (*func)(void *p_void,
+                         int i_level));
+void stack_push(Stack *p_stack, void *p_val);
+void *stack_pop(Stack *p_stack);
+void *stack_top(Stack *p_stack);
+void stack_clear(Stack *p_stack);
+void stack_delete(Stack *p_stack);
+void stack_delete_and_free(Stack *p_stack);
+unsigned stack_size(Stack *p_stack);
+void stack_merge(Stack *p_stack, Stack *p_stack_merge);
+void stack_concat(Stack *p_stack, Stack *p_stack_concat);
+StackIterator* stackiterator_new(Stack *p_stack);
+void stackiterator_delete(StackIterator *p_iter);
+_Bool stackiterator_has_next(StackIterator *p_iter);
+void* stackiterator_next(StackIterator *p_iter);
+_Bool stackiterator_remove_prev(StackIterator *p_iter);
+
+#endif