mirror of https://github.com/cc65/cc65.git
121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/*****************************************************************************/
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/* */
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/* intstack.h */
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/* */
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/* Integer stack used for program settings */
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/* */
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/* */
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/* */
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/* (C) 2004-2010, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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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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#ifndef INTSTACK_H
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#define INTSTACK_H
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#include "inline.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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typedef struct IntStack IntStack;
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struct IntStack {
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unsigned Count;
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long Stack[8];
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};
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/* An initializer for an empty int stack */
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#define STATIC_INTSTACK_INITIALIZER { 0, { 0, 0, 0, 0, 0, 0, 0, 0 } }
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/* Declare an int stack with the given value as first element */
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#define INTSTACK(Val) { 1, { Val, 0, 0, 0, 0, 0, 0, 0 } }
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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#if defined(HAVE_INLINE)
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INLINE int IS_IsFull (const IntStack* S)
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/* Return true if there is no space left on the given int stack */
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{
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return (S->Count >= sizeof (S->Stack) / sizeof (S->Stack[0]));
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}
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#else
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# define IS_IsFull(S) ((S)->Count >= sizeof ((S)->Stack) / sizeof ((S)->Stack[0]))
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#endif
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#if defined(HAVE_INLINE)
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INLINE int IS_IsEmpty (const IntStack* S)
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/* Return true if there are no values on the given int stack */
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{
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return (S->Count == 0);
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}
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#else
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# define IS_IsEmpty(S) ((S)->Count == 0)
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#endif
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#if defined(HAVE_INLINE)
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INLINE unsigned IS_GetCount (const IntStack* S)
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/* Return the number of elements on the given int stack */
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{
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return S->Count;
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}
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#else
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# define IS_GetCount(S) (S)->Count
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#endif
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long IS_Get (const IntStack* S);
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/* Get the value on top of an int stack */
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void IS_Set (IntStack* S, long Val);
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/* Set the value on top of an int stack */
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void IS_Drop (IntStack* S);
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/* Drop a value from an int stack */
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void IS_Push (IntStack* S, long Val);
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/* Push a value onto an int stack */
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long IS_Pop (IntStack* S);
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/* Pop a value from an int stack */
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/* End of intstack.h */
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#endif
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