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moderrs.mk revision 1.8 
      1 # $Id: moderrs.mk,v 1.8 2020/07/29 20:33:38 rillig Exp $
      2 #
      3 # various modifier error tests
      4 
      5 VAR=TheVariable
      6 # incase we have to change it ;-)
      7 MOD_UNKN=Z
      8 MOD_TERM=S,V,v
      9 MOD_S:= ${MOD_TERM},
     10 
     11 FIB=	1 1 2 3 5 8 13 21 34
     12 
     13 all:	modunkn modunknV varterm vartermV modtermV modloop
     14 all:	modloop-close
     15 all:	modwords
     16 all:	modexclam
     17 all:	mod-subst-delimiter
     18 all:	mod-regex-delimiter
     19 all:	mod-ts-parse
     20 all:	mod-t-parse
     21 all:	mod-ifelse-parse
     22 all:	mod-assign-parse
     23 all:	mod-remember-parse
     24 all:	mod-sysv-parse
     25 
     26 modunkn:
     27 	@echo "Expect: Unknown modifier 'Z'"
     28 	@echo "VAR:Z=${VAR:Z}"
     29 
     30 modunknV:
     31 	@echo "Expect: Unknown modifier 'Z'"
     32 	@echo "VAR:${MOD_UNKN}=${VAR:${MOD_UNKN}}"
     33 
     34 varterm:
     35 	@echo "Expect: Unclosed variable specification for VAR"
     36 	@echo VAR:S,V,v,=${VAR:S,V,v,
     37 
     38 vartermV:
     39 	@echo "Expect: Unclosed variable specification for VAR"
     40 	@echo VAR:${MOD_TERM},=${VAR:${MOD_S}
     41 
     42 modtermV:
     43 	@echo "Expect: Unclosed substitution for VAR (, missing)"
     44 	-@echo "VAR:${MOD_TERM}=${VAR:${MOD_TERM}}"
     45 
     46 modloop:
     47 	@echo "Expect: 2 errors about missing @ delimiter"
     48 	@echo ${UNDEF:U1 2 3:@var}
     49 	@echo ${UNDEF:U1 2 3:@var (a] ...}
     50 	@echo ${UNDEF:U1 2 3:@var@${var}@}
     51 
     52 # The closing brace after the ${var} is part of the replacement string.
     53 # In ParseModifierPart, braces and parentheses don't have to be balanced.
     54 # This is contrary to the :M, :N modifiers, where both parentheses and
     55 # braces must be balanced.
     56 # This is also contrary to the SysV modifier, where only the actually
     57 # used delimiter (either braces or parentheses) must be balanced.
     58 modloop-close:
     59 	@echo $@:
     60 	@echo ${UNDEF:U1 2 3:@var@${var}}...@
     61 	@echo ${UNDEF:U1 2 3:@var@${var}}...@}
     62 
     63 modwords:
     64 	@echo "Expect: 2 errors about missing ] delimiter"
     65 	@echo ${UNDEF:U1 2 3:[}
     66 	@echo ${UNDEF:U1 2 3:[#}
     67 
     68 	# out of bounds => empty
     69 	@echo 13=${UNDEF:U1 2 3:[13]}
     70 
     71 	# Word index out of bounds.
     72 	#
     73 	# On LP64I32, strtol returns LONG_MAX,
     74 	# which is then truncated to int (undefined behavior),
     75 	# typically resulting in -1.
     76 	# This -1 is interpreted as "the last word".
     77 	#
     78 	# On ILP32, strtol returns LONG_MAX,
     79 	# which is a large number.
     80 	# This results in a range from LONG_MAX - 1 to 3,
     81 	# which is empty.
     82 	@echo 12345=${UNDEF:U1 2 3:[123451234512345123451234512345]:S,^$,ok,:S,^3$,ok,}
     83 
     84 modexclam:
     85 	@echo "Expect: 2 errors about missing ! delimiter"
     86 	@echo ${VARNAME:!echo}
     87 	# When the final exclamation mark is missing, there is no
     88 	# fallback to the SysV substitution modifier.
     89 	# If there were a fallback, the output would be "exclam",
     90 	# and the above would have produced an "Unknown modifier '!'".
     91 	@echo ${!:L:!=exclam}
     92 
     93 # XXX: For "${VAR:S", I wonder where the "(@ missing)" comes from.
     94 # This could be undefined behavior, but it's reproducible.
     95 mod-subst-delimiter:
     96 	@echo $@:
     97 	@echo ${VAR:S
     98 	@echo ${VAR:S,
     99 	@echo ${VAR:S,from
    100 	@echo ${VAR:S,from,
    101 	@echo ${VAR:S,from,to
    102 	@echo ${VAR:S,from,to,
    103 	@echo ${VAR:S,from,to,}
    104 	@echo 1: ${VAR:S
    105 	@echo 2: ${VAR:S,
    106 	@echo 3: ${VAR:S,from
    107 	@echo ${VAR:S,from,
    108 	@echo ${VAR:S,from,to
    109 	@echo ${VAR:S,from,to,
    110 	@echo ${VAR:S,from,to,}
    111 
    112 # XXX: Where does the "echo" in the output of "${VAR:C" come from?
    113 mod-regex-delimiter:
    114 	@echo $@:
    115 	@echo ${VAR:C
    116 	@echo ${VAR:C,
    117 	@echo ${VAR:C,from
    118 	@echo ${VAR:C,from,
    119 	@echo ${VAR:C,from,to
    120 	@echo ${VAR:C,from,to,
    121 	@echo ${VAR:C,from,to,}
    122 	@echo 1: ${VAR:C
    123 	@echo 2: ${VAR:C,
    124 	@echo 3: ${VAR:C,from
    125 	@echo ${VAR:C,from,
    126 	@echo ${VAR:C,from,to
    127 	@echo ${VAR:C,from,to,
    128 	@echo ${VAR:C,from,to,}
    129 
    130 mod-ts-parse:
    131 	@echo $@:
    132 	@echo ${FIB:ts}
    133 	@echo ${FIB:ts\65}	# octal 065 == U+0035 == '5'
    134 	@echo ${FIB:ts\65oct}	# bad modifier
    135 	@echo ${FIB:tsxy}	# modifier too long
    136 
    137 mod-t-parse:
    138 	@echo $@:
    139 	@echo ${FIB:txy}
    140 	@echo ${FIB:t}
    141 	@echo ${FIB:t:M*}
    142 
    143 mod-ifelse-parse:
    144 	@echo $@:
    145 	@echo ${FIB:?
    146 	@echo ${FIB:?then
    147 	@echo ${FIB:?then:
    148 	@echo ${FIB:?then:else
    149 	@echo ${FIB:?then:else}
    150 
    151 mod-assign-parse:
    152 	@echo $@:
    153 	@echo ${ASSIGN::x}	# 'x' is an unknown assignment operator
    154 	@echo ${::=value}	# trying to set the empty variable
    155 	@echo ${ASSIGN::=value	# missing closing brace
    156 
    157 mod-remember-parse:
    158 	@echo $@:
    159 	@echo ${FIB:_}		# ok
    160 	@echo ${FIB:__}		# modifier name too long
    161 
    162 mod-sysv-parse:
    163 	@echo $@:
    164 	@echo ${FIB:3
    165 	@echo ${FIB:3=
    166 	@echo ${FIB:3=x3
    167 	@echo ${FIB:3=x3}	# ok
    168