summary refs log tree commit diff stats
path: root/tests/concepts/tconcepts_overload_precedence.nim
blob: 9eed6256a32a52038fd54a28efe7eb2bf686f85f (plain) (blame)
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
discard """
  output: '''x as ParameterizedType[T]
x as ParameterizedType[T]
x as ParameterizedType[T]
x as ParameterizedType
x as ParameterizedType
x as CustomTypeClass'''
"""

type ParameterizedType[T] = object

type CustomTypeClass = concept
  true

# 3 competing procs
proc a[T](x: ParameterizedType[T]) =
  echo "x as ParameterizedType[T]"

proc a(x: ParameterizedType) =
  echo "x as ParameterizedType"

proc a(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

# the same procs in different order
proc b(x: ParameterizedType) =
  echo "x as ParameterizedType"

proc b(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

proc b[T](x: ParameterizedType[T]) =
  echo "x as ParameterizedType[T]"

# and yet another order
proc c(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

proc c(x: ParameterizedType) =
  echo "x as ParameterizedType"

proc c[T](x: ParameterizedType[T]) =
  echo "x as ParameterizedType[T]"

# remove the most specific one
proc d(x: ParameterizedType) =
  echo "x as ParameterizedType"

proc d(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

# then shuffle the order again
proc e(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

proc e(x: ParameterizedType) =
  echo "x as ParameterizedType"

# the least specific one is a match
proc f(x: CustomTypeClass) =
  echo "x as CustomTypeClass"

a(ParameterizedType[int]())
b(ParameterizedType[int]())
c(ParameterizedType[int]())
d(ParameterizedType[int]())
e(ParameterizedType[int]())
f(ParameterizedType[int]())