mirror of https://github.com/cc65/cc65.git
91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/*****************************************************************************/
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/* */
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/* intptrstack.c */
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/* */
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/* Integer+ptr stack used for program settings */
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/* */
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/* */
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/* */
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/* (C) 2017, Mega Cat Studios */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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/* common */
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#include "check.h"
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#include "intptrstack.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void IPS_Get (const IntPtrStack* S, long *Val, void **Ptr)
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/* Get the value on top of an int stack */
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{
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PRECONDITION (S->Count > 0);
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if (Val) *Val = S->Stack[S->Count-1].val;
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if (Ptr) *Ptr = S->Stack[S->Count-1].ptr;
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}
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void IPS_Set (IntPtrStack* S, long Val, void *Ptr)
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/* Set the value on top of an int stack */
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{
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PRECONDITION (S->Count > 0);
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S->Stack[S->Count-1].val = Val;
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S->Stack[S->Count-1].ptr = Ptr;
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}
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void IPS_Drop (IntPtrStack* S)
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/* Drop a value from an int stack */
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{
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PRECONDITION (S->Count > 0);
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--S->Count;
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}
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void IPS_Push (IntPtrStack* S, long Val, void *Ptr)
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/* Push a value onto an int stack */
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{
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PRECONDITION (S->Count < sizeof (S->Stack) / sizeof (S->Stack[0]));
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S->Stack[S->Count].val = Val;
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S->Stack[S->Count++].ptr = Ptr;
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}
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void IPS_Pop (IntPtrStack* S, long *Val, void **Ptr)
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/* Pop a value from an int stack */
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{
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PRECONDITION (S->Count > 0);
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if (Val) *Val = S->Stack[--S->Count].val;
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if (Ptr) *Ptr = S->Stack[S->Count].ptr;
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}
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