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varmod-order.mk revision 1.9 
      1 # $NetBSD: varmod-order.mk,v 1.9 2023/02/26 06:08:06 rillig Exp $
      2 #
      3 # Tests for the :O variable modifier and its variants, which either sort the
      4 # words of the value or shuffle them.
      5 
      6 WORDS=		one two three four five six seven eight nine ten
      7 NUMBERS=	8 5 4 9 1 7 6 10 3 2	# in English alphabetical order
      8 
      9 .if ${WORDS:O} != "eight five four nine one seven six ten three two"
     10 .  error ${WORDS:O}
     11 .endif
     12 
     13 # Unknown modifier "OX"
     14 _:=	${WORDS:OX}
     15 
     16 # Unknown modifier "OxXX"
     17 _:=	${WORDS:OxXX}
     18 
     19 # Missing closing brace, to cover the error handling code.
     20 _:=	${WORDS:O
     21 _:=	${NUMBERS:On
     22 _:=	${NUMBERS:Onr
     23 
     24 # Shuffling numerically doesn't make sense, so don't allow 'x' and 'n' to be
     25 # combined.
     26 #
     27 # expect: make: Bad modifier ":Oxn" for variable "NUMBERS"
     28 # expect+1: Malformed conditional (${NUMBERS:Oxn})
     29 .if ${NUMBERS:Oxn}
     30 .  error
     31 .else
     32 .  error
     33 .endif
     34 
     35 # Extra characters after ':On' are detected and diagnosed.
     36 # TODO: Add line number information to the "Bad modifier" diagnostic.
     37 #
     38 # expect: make: Bad modifier ":On_typo" for variable "NUMBERS"
     39 .if ${NUMBERS:On_typo}
     40 .  error
     41 .else
     42 .  error
     43 .endif
     44 
     45 # Extra characters after ':Onr' are detected and diagnosed.
     46 #
     47 # expect: make: Bad modifier ":Onr_typo" for variable "NUMBERS"
     48 .if ${NUMBERS:Onr_typo}
     49 .  error
     50 .else
     51 .  error
     52 .endif
     53 
     54 # Extra characters after ':Orn' are detected and diagnosed.
     55 #
     56 # expect: make: Bad modifier ":Orn_typo" for variable "NUMBERS"
     57 .if ${NUMBERS:Orn_typo}
     58 .  error
     59 .else
     60 .  error
     61 .endif
     62 
     63 # Repeating the 'n' is not supported.  In the typical use cases, the sorting
     64 # criteria are fixed, not computed, therefore allowing this redundancy does
     65 # not make sense.
     66 #
     67 # expect: make: Bad modifier ":Onn" for variable "NUMBERS"
     68 .if ${NUMBERS:Onn}
     69 .  error
     70 .else
     71 .  error
     72 .endif
     73 
     74 # Repeating the 'r' is not supported as well, for the same reasons as above.
     75 #
     76 # expect: make: Bad modifier ":Onrr" for variable "NUMBERS"
     77 .if ${NUMBERS:Onrr}
     78 .  error
     79 .else
     80 .  error
     81 .endif
     82 
     83 # Repeating the 'r' is not supported as well, for the same reasons as above.
     84 #
     85 # expect: make: Bad modifier ":Orrn" for variable "NUMBERS"
     86 .if ${NUMBERS:Orrn}
     87 .  error
     88 .else
     89 .  error
     90 .endif
     91 
     92 
     93 # Any modifier that starts with 'O' either sorts or shuffles the words.  Other
     94 # than for many other modifiers, there is no fallback to the SysV modifier
     95 # ':from=to'.
     96 .if ${SWITCH:UOn:On=Off} != "Off"
     97 .  error
     98 .else
     99 .  error
    100 .endif
    101 
    102 all:
    103