varmod-range.mk revision 1.14
1 # $NetBSD: varmod-range.mk,v 1.14 2024/08/06 18:00:17 rillig Exp $ 2 # 3 # Tests for the :range variable modifier, which generates sequences 4 # of integers from the given range. 5 # 6 # See also: 7 # modword.mk 8 9 # The :range modifier generates a sequence of integers, one number per 10 # word of the expression's value. 11 .if ${a b c:L:range} != "1 2 3" 12 . error 13 .endif 14 15 # To preserve spaces in a word, they can be enclosed in quotes, just like 16 # everywhere else. 17 .if ${:U first "the second word" third 4 :range} != "1 2 3 4" 18 . error 19 .endif 20 21 # The :range modifier takes the number of words from the value of the 22 # expression. If that expression is undefined, the range is 23 # undefined as well. This should not come as a surprise. 24 .if "${:range}" != "" 25 . error 26 .endif 27 28 # An empty expression results in a sequence of a single number, even though 29 # the expression contains 0 words. 30 .if ${:U:range} != "1" 31 . error 32 .endif 33 34 # The :range modifier can be given a parameter, which makes the generated 35 # range independent from the value or the name of the expression. 36 .if "${:range=5}" != "" 37 . error 38 .endif 39 # XXX: As of 2023-12-17, the ':range=n' modifier does not turn the undefined 40 # expression into a defined one, even though it does not depend on the value 41 # of the expression. This looks like an oversight. 42 # expect+1: Malformed conditional '${:range=5} != ""' 43 .if ${:range=5} != "" 44 . error 45 .else 46 . error 47 .endif 48 49 # Negative ranges don't make sense. 50 # As of 2020-11-01, they are accepted though, using up all available memory. 51 #.if "${:range=-1}" 52 #. error 53 #.else 54 #. error 55 #.endif 56 57 # The :range modifier requires a number as parameter. 58 # 59 # Until 2020-11-01, the parser tried to read the 'x' as a number, failed and 60 # stopped there. It then tried to parse the next modifier at that point, 61 # which failed with the message "Unknown modifier". 62 # 63 # Since 2020-11-01, the parser issues a more precise "Invalid number" error 64 # instead. 65 # expect+2: while evaluating "${:U:range=x}Rest" != "Rest"" with value "": Invalid number "x}Rest" != "Rest"" for ':range' modifier 66 # expect+1: Malformed conditional '"${:U:range=x}Rest" != "Rest"' 67 .if "${:U:range=x}Rest" != "Rest" 68 . error 69 .else 70 . error 71 .endif 72 73 # The upper limit of the range must always be given in decimal. 74 # This parse error stops at the 'x', trying to parse it as a variable 75 # modifier. 76 # expect+2: while evaluating "${:U:range=0x0}Rest" != "Rest"" with value "1": Unknown modifier "x0" 77 # expect+1: Malformed conditional '"${:U:range=0x0}Rest" != "Rest"' 78 .if "${:U:range=0x0}Rest" != "Rest" 79 . error 80 .else 81 . error 82 .endif 83 84 # As of 2020-11-01, numeric overflow is not detected. 85 # Since strtoul returns ULONG_MAX in such a case, it is interpreted as a 86 # very large number, consuming all available memory. 87 #.if "${:U:range=18446744073709551619}Rest" != "Rest" 88 #. error 89 #.else 90 #. error 91 #.endif 92 93 # modifier name too short 94 # expect+2: while evaluating variable "a b c" with value "a b c": Unknown modifier "rang" 95 # expect+1: Malformed conditional '"${a b c:L:rang}Rest" != "Rest"' 96 .if "${a b c:L:rang}Rest" != "Rest" 97 . error 98 .else 99 . error 100 .endif 101 102 # misspelled modifier name 103 # expect+2: while evaluating variable "a b c" with value "a b c": Unknown modifier "rango" 104 # expect+1: Malformed conditional '"${a b c:L:rango}Rest" != "Rest"' 105 .if "${a b c:L:rango}Rest" != "Rest" 106 . error 107 .else 108 . error 109 .endif 110 111 # modifier name too long 112 # expect+2: while evaluating variable "a b c" with value "a b c": Unknown modifier "ranger" 113 # expect+1: Malformed conditional '"${a b c:L:ranger}Rest" != "Rest"' 114 .if "${a b c:L:ranger}Rest" != "Rest" 115 . error 116 .else 117 . error 118 .endif 119 120 all: 121
Indexes created Tue Oct 07 21:09:53 GMT 2025