1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#include "text-util.h"
#include "util.h"
bool text_range_valid(Filerange *r) {
return r->start != EPOS && r->end != EPOS && r->start <= r->end;
}
size_t text_range_size(Filerange *r) {
return text_range_valid(r) ? r->end - r->start : 0;
}
Filerange text_range_empty(void) {
return (Filerange){ .start = EPOS, .end = EPOS };
}
Filerange text_range_union(Filerange *r1, Filerange *r2) {
if (!text_range_valid(r1))
return *r2;
if (!text_range_valid(r2))
return *r1;
return (Filerange) {
.start = MIN(r1->start, r2->start),
.end = MAX(r1->end, r2->end),
};
}
Filerange text_range_new(size_t a, size_t b) {
return (Filerange) {
.start = MIN(a, b),
.end = MAX(a, b),
};
}
bool text_range_equal(Filerange *r1, Filerange *r2) {
if (!text_range_valid(r1) && !text_range_valid(r2))
return true;
return r1->start == r2->start && r1->end == r2->end;
}
bool text_range_overlap(Filerange *r1, Filerange *r2) {
if (!text_range_valid(r1) || !text_range_valid(r2))
return false;
return r1->start <= r2->end && r2->start <= r1->end;
}
bool text_range_contains(Filerange *r, size_t pos) {
return text_range_valid(r) && r->start <= pos && pos <= r->end;
}
|
