From 4e78a4ef15ac24481f18115b223f82726d0cd102 Mon Sep 17 00:00:00 2001 From: crc Date: Thu, 17 Dec 2020 19:47:17 +0000 Subject: [PATCH] nga-python: IntegerStack now derives from list (#20) FossilOrigin-Name: 9cebb1e22b77545581e67fa6224286cba01a526684340452a858aa795b42af8c --- vm/nga-python/IntegerStack.py | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) diff --git a/vm/nga-python/IntegerStack.py b/vm/nga-python/IntegerStack.py index 5b10e59..c56f508 100644 --- a/vm/nga-python/IntegerStack.py +++ b/vm/nga-python/IntegerStack.py @@ -1,29 +1,24 @@ -class IntegerStack: +class IntegerStack(list): def __init__(self): - self.stack = [] * 128 + stack = [] * 128 + self.extend(stack) def depth(self): - return len(self.stack) + return len(self) def tos(self): - return self.stack[-1] + return self[-1] def push(self, v): - self.stack.append(v) - - def append(self, v): - self.stack.append(v) - - def pop(self): - return self.stack.pop() + self.append(v) def dup(self): - self.stack.append(self.stack[-1]) + self.append(self[-1]) def drop(self): - self.stack.pop() + self.pop() def swap(self): - a = self.stack[-2] - self.stack[-2] = self.stack[-1] - self.stack[-1] = a + a = self[-2] + self[-2] = self[-1] + self[-1] = a