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
|
discard """
output: "Valid and not defined"
"""
# test for issue #7997
# checking for `when not defined` in a template for some compile time symbol
# results in a compilation error of:
# Error: obsolete usage of 'defined', use 'declared' instead
# if the symbol is 'overloaded' by some variable or procedure, because in
# that case the argument of `defined` is of kind `nkSym` instead of `nkIdent`
# (for which was checked in `semexprs.semDefined`).
block:
# check whether a proc with the same name as the argument to `defined`
# compiles
proc overloaded() =
discard
template definedCheck(): untyped =
when not defined(overloaded): true
else: false
doAssert definedCheck == true
block:
# check whether a variable with the same name as the argument to `defined`
# compiles
var overloaded: int
template definedCheck(): untyped =
when not defined(overloaded): true
else: false
doAssert definedCheck == true
block:
# check whether a non overloaded when check still works properly
when not defined(validIdentifier):
echo "Valid and not defined"
block:
# now check that invalid identifiers cause a compilation error
# by using reject template.
template reject(b) =
static: doAssert(not compiles(b))
reject:
when defined(123):
echo "Invalid identifier! Will not be echoed"
|
