1/*****************************************************************************/
2/* */
3/* filepos.c */
4/* */
5/* File position data structure */
6/* */
7/* */
8/* */
9/* (C) 1998-2011, Ullrich von Bassewitz */
10/* Roemerstrasse 52 */
11/* D-70794 Filderstadt */
12/* EMail: uz@cc65.org */
13/* */
14/* */
15/* This software is provided 'as-is', without any expressed or implied */
16/* warranty. In no event will the authors be held liable for any damages */
17/* arising from the use of this software. */
18/* */
19/* Permission is granted to anyone to use this software for any purpose, */
20/* including commercial applications, and to alter it and redistribute it */
21/* freely, subject to the following restrictions: */
22/* */
23/* 1. The origin of this software must not be misrepresented; you must not */
24/* claim that you wrote the original software. If you use this software */
25/* in a product, an acknowledgment in the product documentation would be */
26/* appreciated but is not required. */
27/* 2. Altered source versions must be plainly marked as such, and must not */
28/* be misrepresented as being the original software. */
29/* 3. This notice may not be removed or altered from any source */
30/* distribution. */
31/* */
32/*****************************************************************************/
33
34
35
36/* common */
37#include "filepos.h"
38
39
40
41/*****************************************************************************/
42/* Code */
43/*****************************************************************************/
44
45
46
47void InitFilePos (FilePos* P)
48/* Initialize the file position (set all fields to zero) */
49{
50 P->Line = 0;
51 P->Col = 0;
52 P->Name = 0;
53}
54
55
56
57int CompareFilePos (const FilePos* P1, const FilePos* P2)
58/* Compare two file positions. Return zero if both are equal, return a value
59** > 0 if P1 is greater and P2, and a value < 0 if P1 is less than P2. The
60** compare rates file index over line over column.
61*/
62{
63 if (P1->Name > P2->Name) {
64 return 1;
65 } else if (P1->Name < P2->Name) {
66 return -1;
67 } else if (P1->Line > P2->Line) {
68 return 1;
69 } else if (P1->Line < P2->Line) {
70 return -1;
71 } else if (P1->Col > P2->Col) {
72 return 1;
73 } else if (P1->Col < P2->Col) {
74 return -1;
75 } else {
76 return 0;
77 }
78}
79