mirror of https://github.com/cc65/cc65.git
127 lines
4.8 KiB
C
127 lines
4.8 KiB
C
/*****************************************************************************/
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/* */
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/* comments.c */
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/* */
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/* Comment management for da65 */
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/* */
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/* */
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/* */
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/* (C) 2006 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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/* common */
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#include "xmalloc.h"
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/* da65 */
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#include "attrtab.h"
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#include "comments.h"
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#include "error.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Comment table */
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static const char* CommentTab[0x10000];
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#define MAX_LONG_COMMENTS 256
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static const char* LongCommentVal[MAX_LONG_COMMENTS];
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static unsigned LongCommentAddr[MAX_LONG_COMMENTS];
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static unsigned LongCommentsUsed;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static unsigned FindLongIndex (unsigned Addr)
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{
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unsigned i;
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for (i = 0; i < LongCommentsUsed; i++) {
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if (LongCommentAddr[i] == Addr) {
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return i;
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}
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}
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return -1;
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}
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void SetComment (unsigned Addr, const char* Comment)
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/* Set a comment for the given address */
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{
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/* Check the given address */
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AddrCheck (Addr);
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if (IsLongAddr (Addr)) {
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if (FindLongIndex (Addr)) {
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Warning ("Duplicate comment for address $%06X", Addr);
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} else {
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if (LongCommentsUsed >= MAX_LONG_COMMENTS) {
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Error("Too many long-address comments");
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}
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LongCommentVal[LongCommentsUsed] = xstrdup (Comment);
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LongCommentAddr[LongCommentsUsed] = Addr;
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LongCommentsUsed++;
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}
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} else {
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/* If we do already have a comment, warn and ignore the new one */
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if (CommentTab[Addr]) {
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Warning ("Duplicate comment for address $%04X", Addr);
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} else {
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CommentTab[Addr] = xstrdup (Comment);
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}
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}
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}
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const char* GetComment (unsigned Addr)
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/* Return the comment for an address */
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{
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/* Check the given address */
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AddrCheck (Addr);
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if (IsLongAddr (Addr)) {
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const unsigned i = FindLongIndex (Addr);
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if (i < LongCommentsUsed) {
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return LongCommentVal[i];
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}
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return NULL;
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}
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/* Return the label if any */
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return CommentTab[Addr];
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}
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