From 7c4c3829c317c053e98cb7ebb7219e7327ef0216 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Grubbstr=C3=B6m=20=28Grubba=29?=
<grubba@grubba.org>
Date: Sat, 14 Nov 1998 19:17:33 +0100
Subject: [PATCH] Added quick_pop(). The initial stack size can now be
specified to create() and reset().
Rev: lib/modules/Stack.pmod:1.4
---
lib/modules/Stack.pmod | 34 ++++++++++++++++++++++++++++------
1 file changed, 28 insertions(+), 6 deletions(-)
diff --git a/lib/modules/Stack.pmod b/lib/modules/Stack.pmod
index b57df1b3d4..d6ab90993d 100644
--- a/lib/modules/Stack.pmod
+++ b/lib/modules/Stack.pmod
@@ -2,12 +2,14 @@
class stack {
int ptr;
- mixed *arr=allocate(32);
+ mixed *arr;
void push(mixed val)
{
- if(ptr==sizeof(arr)) arr+=allocate(ptr);
- arr[ptr++]=val;
+ if(ptr == sizeof(arr)) {
+ arr += allocate(ptr);
+ }
+ arr[ptr++] = val;
}
mixed top()
@@ -18,6 +20,21 @@ class stack {
error("Stack underflow\n");
}
+ void quick_pop(void|int val)
+ {
+ if (val) {
+ if (ptr < val) {
+ ptr = 0;
+ } else {
+ ptr -= val;
+ }
+ } else {
+ if (ptr > 0) {
+ ptr--;
+ }
+ }
+ }
+
mixed pop(void|int val)
{
mixed foo;
@@ -46,10 +63,15 @@ class stack {
return foo;
}
- void reset()
+ void reset(int|void initial_size)
+ {
+ arr = allocate(initial_size || 32);
+ ptr = 0;
+ }
+
+ void create(int|void initial_size)
{
- arr=allocate(32);
- ptr=0;
+ arr = allocate(initial_size || 32);
}
};
--
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