1# $NetBSD: varmod-range.mk,v 1.13 2024/07/05 19:47:22 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 120all: 121