1 files changed, 73 insertions, 0 deletions
diff --git a/src/stack.h b/src/stack.h
new file mode 100644
index 0000000..e84911f
--- /dev/null
+++ b/src/stack.h
@@ -0,0 +1,73 @@
+/*
+
+    casm - Simple, portable assembler
+
+    Copyright (C) 2003-2015  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    -------------------------------------------------------------------------
+
+    Simple stack
+
+*/
+
+#ifndef CASM_STACK_H
+#define CASM_STACK_H
+
+typedef struct stack Stack;
+
+/* ---------------------------------------- INTERFACES
+*/
+
+/* Create a new stack.
+*/
+Stack   *StackCreate(void);
+
+
+/* Push a value to the stack.
+*/
+void    StackPush(Stack *stack, void *item);
+
+
+/* Pop a value from the stack.  Returns NULL if the stack is empty.
+*/
+void    *StackPop(Stack *stack);
+
+
+/* Like a pop, but doesn't remove the entry.  Returns NULL if the stack is
+   empty.
+*/
+void    *StackPeek(Stack *stack);
+
+
+/* Remove all entries from the stack
+*/
+#define StackClear(stack)       do {} while(StackPop(stack))
+
+
+/* Number of items on stack
+*/
+int     StackSize(Stack *stack);
+
+
+/* Free the stack.
+*/
+void    StackFree(Stack *stack);
+
+#endif
+
+/*
+vim: ai sw=4 ts=8 expandtab
+*/