source: mainline/uspace/app/sbi/src/cspan.c

Last change on this file was 051bc69a, checked in by Jiri Svoboda <jiri@…>, 15 years ago

Update SBI to rev. 244.

  • Property mode set to 100644
File size: 3.1 KB
Line 
1/*
2 * Copyright (c) 2010 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @file Coordinate span
30 *
31 * Captures the origin (input object, starting and ending line number and
32 * columnt number) of a code fragment.
33 */
34
35#include <assert.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include "mytypes.h"
39
40#include "cspan.h"
41
42/** Allocate new coordinate span.
43 *
44 * @param input Input object.
45 * @param line Starting line number.
46 * @param col0 Starting column number.
47 * @param line Ending number (inclusive).
48 * @param col1 Ending column number (inclusive).
49 *
50 * @return New coordinate span.
51 */
52cspan_t *cspan_new(input_t *input, int line0, int col0, int line1, int col1)
53{
54 cspan_t *cspan;
55
56 cspan = calloc(1, sizeof(cspan_t));
57 if (cspan == NULL) {
58 printf("Memory allocation failed.\n");
59 exit(1);
60 }
61
62 cspan->input = input;
63 cspan->line0 = line0;
64 cspan->col0 = col0;
65 cspan->line1 = line1;
66 cspan->col1 = col1;
67
68 return cspan;
69}
70
71/** Create a merged coordinate span.
72 *
73 * Creates the smalles cspan covering cpans @a a and @a b. Both spans
74 * must be from the same input object and @a a must start earlier
75 * than @a b terminates.
76 *
77 * @param a First coordinate span
78 * @param b Second coordinate span
79 * @return New coordinate span.
80 */
81cspan_t *cspan_merge(cspan_t *a, cspan_t *b)
82{
83 assert(a != NULL);
84 assert(b != NULL);
85 assert(a->input == b->input);
86
87 return cspan_new(a->input, a->line0, a->col0, b->line1, b->col1);
88}
89
90/** Print coordinate span.
91 *
92 * @param cspan Coordinate span
93 */
94void cspan_print(cspan_t *cspan)
95{
96 printf("%s:", cspan->input->name);
97
98 if (cspan->line0 != cspan->line1) {
99 printf("%d:%d-%d:%d", cspan->line0, cspan->col0, cspan->line1,
100 cspan->col1);
101 } else {
102 printf("%d:%d-%d", cspan->line0, cspan->col0, cspan->col1);
103 }
104}
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