From 3cba252945176fe2e0ab44445143068e793a7245 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Tue, 30 Jan 2018 10:08:56 +0100 Subject: kiss --- stack.go | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'stack.go') diff --git a/stack.go b/stack.go index 324e16d..da87aa9 100644 --- a/stack.go +++ b/stack.go @@ -1,24 +1,22 @@ package j1 -const stackSize = 0x20 - type stack struct { - data [stackSize]uint16 // stack - sp int8 // 5 bit stack pointer + data [0x20]uint16 // stack + sp int8 // 5 bit stack pointer } func (s *stack) move(dir int8) { - s.sp = (s.sp + dir) & (stackSize - 1) + s.sp = (s.sp + dir) & int8(len(s.data)-1) } func (s *stack) push(v uint16) { - s.sp = (s.sp + 1) & (stackSize - 1) + s.sp = (s.sp + 1) & int8(len(s.data)-1) s.data[s.sp] = v } func (s *stack) pop() uint16 { sp := s.sp - s.sp = (s.sp - 1) & (stackSize - 1) + s.sp = (s.sp - 1) & int8(len(s.data)-1) return s.data[sp] } -- cgit v1.2.3