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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// Test case for Issue panacekcz#12:
// https://github.com/panacekcz/checker-framework/issues/12
import org.checkerframework.checker.index.qual.IndexFor;
import org.checkerframework.checker.index.qual.IndexOrHigh;
import org.checkerframework.checker.index.qual.LTLengthOf;
import org.checkerframework.checker.index.qual.LTOMLengthOf;
import org.checkerframework.checker.index.qual.NonNegative;
import org.checkerframework.common.value.qual.IntVal;
class RefineNeqLength {
void refineNeqLength(int[] array, @IndexOrHigh("#1") int i) {
// Refines i <= array.length to i < array.length
if (i != array.length) {
refineNeqLengthMOne(array, i);
}
// No refinement
if (i != array.length - 1) {
// :: error: (argument.type.incompatible)
refineNeqLengthMOne(array, i);
}
}
void refineNeqLengthMOne(int[] array, @IndexFor("#1") int i) {
// Refines i < array.length to i < array.length - 1
if (i != array.length - 1) {
refineNeqLengthMTwo(array, i);
// :: error: (argument.type.incompatible)
refineNeqLengthMThree(array, i);
}
}
void refineNeqLengthMTwo(int[] array, @NonNegative @LTOMLengthOf("#1") int i) {
// Refines i < array.length - 1 to i < array.length - 2
if (i != array.length - 2) {
refineNeqLengthMThree(array, i);
}
// No refinement
if (i != array.length - 1) {
// :: error: (argument.type.incompatible)
refineNeqLengthMThree(array, i);
}
}
void refineNeqLengthMTwoNonLiteral(
int[] array,
@NonNegative @LTOMLengthOf("#1") int i,
@IntVal(3) int c3,
@IntVal({2, 3}) int c23) {
// Refines i < array.length - 1 to i < array.length - 2
if (i != array.length - (5 - c3)) {
refineNeqLengthMThree(array, i);
}
// No refinement
if (i != array.length - c23) {
// :: error: (argument.type.incompatible)
refineNeqLengthMThree(array, i);
}
}
@LTLengthOf(value = "#1", offset = "3") int refineNeqLengthMThree(
int[] array, @NonNegative @LTLengthOf(value = "#1", offset = "2") int i) {
// Refines i < array.length - 2 to i < array.length - 3
if (i != array.length - 3) {
return i;
}
// :: error: (return.type.incompatible)
return i;
}
// The same test for a string.
@LTLengthOf(value = "#1", offset = "3") int refineNeqLengthMThree(
String str, @NonNegative @LTLengthOf(value = "#1", offset = "2") int i) {
// Refines i < str.length() - 2 to i < str.length() - 3
if (i != str.length() - 3) {
return i;
}
// :: error: (return.type.incompatible)
return i;
}
}
|
