167 lines
4.0 KiB
Makefile
167 lines
4.0 KiB
Makefile
# $Id: moderrs.mk,v 1.9 2020/07/31 13:30:09 rillig Exp $
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#
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# various modifier error tests
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VAR=TheVariable
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# incase we have to change it ;-)
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MOD_UNKN=Z
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MOD_TERM=S,V,v
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MOD_S:= ${MOD_TERM},
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FIB= 1 1 2 3 5 8 13 21 34
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all: modunkn modunknV varterm vartermV modtermV modloop
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all: modloop-close
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all: modwords
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all: modexclam
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all: mod-subst-delimiter
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all: mod-regex-delimiter
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all: mod-ts-parse
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all: mod-t-parse
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all: mod-ifelse-parse
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all: mod-assign-parse
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all: mod-remember-parse
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all: mod-sysv-parse
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modunkn:
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@echo "Expect: Unknown modifier 'Z'"
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@echo "VAR:Z=${VAR:Z}"
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modunknV:
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@echo "Expect: Unknown modifier 'Z'"
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@echo "VAR:${MOD_UNKN}=${VAR:${MOD_UNKN}}"
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varterm:
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@echo "Expect: Unclosed variable specification for VAR"
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@echo VAR:S,V,v,=${VAR:S,V,v,
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vartermV:
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@echo "Expect: Unclosed variable specification for VAR"
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@echo VAR:${MOD_TERM},=${VAR:${MOD_S}
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modtermV:
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@echo "Expect: Unclosed substitution for VAR (, missing)"
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-@echo "VAR:${MOD_TERM}=${VAR:${MOD_TERM}}"
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modloop:
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@echo "Expect: 2 errors about missing @ delimiter"
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@echo ${UNDEF:U1 2 3:@var}
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@echo ${UNDEF:U1 2 3:@var@...}
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@echo ${UNDEF:U1 2 3:@var@${var}@}
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# The closing brace after the ${var} is part of the replacement string.
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# In ParseModifierPart, braces and parentheses don't have to be balanced.
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# This is contrary to the :M, :N modifiers, where both parentheses and
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# braces must be balanced.
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# This is also contrary to the SysV modifier, where only the actually
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# used delimiter (either braces or parentheses) must be balanced.
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modloop-close:
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@echo $@:
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@echo ${UNDEF:U1 2 3:@var@${var}}...@
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@echo ${UNDEF:U1 2 3:@var@${var}}...@}
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modwords:
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@echo "Expect: 2 errors about missing ] delimiter"
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@echo ${UNDEF:U1 2 3:[}
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@echo ${UNDEF:U1 2 3:[#}
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# out of bounds => empty
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@echo 13=${UNDEF:U1 2 3:[13]}
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# Word index out of bounds.
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#
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# On LP64I32, strtol returns LONG_MAX,
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# which is then truncated to int (undefined behavior),
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# typically resulting in -1.
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# This -1 is interpreted as "the last word".
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#
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# On ILP32, strtol returns LONG_MAX,
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# which is a large number.
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# This results in a range from LONG_MAX - 1 to 3,
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# which is empty.
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@echo 12345=${UNDEF:U1 2 3:[123451234512345123451234512345]:S,^$,ok,:S,^3$,ok,}
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modexclam:
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@echo "Expect: 2 errors about missing ! delimiter"
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@echo ${VARNAME:!echo}
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# When the final exclamation mark is missing, there is no
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# fallback to the SysV substitution modifier.
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# If there were a fallback, the output would be "exclam",
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# and the above would have produced an "Unknown modifier '!'".
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@echo ${!:L:!=exclam}
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# XXX: For "${VAR:S", I wonder where the "(@ missing)" comes from.
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# This could be undefined behavior, but it's reproducible.
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mod-subst-delimiter:
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@echo $@:
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@echo ${VAR:S
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@echo ${VAR:S,
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@echo ${VAR:S,from
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@echo ${VAR:S,from,
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@echo ${VAR:S,from,to
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@echo ${VAR:S,from,to,
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@echo ${VAR:S,from,to,}
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@echo 1: ${VAR:S
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@echo 2: ${VAR:S,
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@echo 3: ${VAR:S,from
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@echo ${VAR:S,from,
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@echo ${VAR:S,from,to
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@echo ${VAR:S,from,to,
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@echo ${VAR:S,from,to,}
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mod-regex-delimiter:
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@echo $@:
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@echo ${VAR:C
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@echo ${VAR:C,
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@echo ${VAR:C,from
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@echo ${VAR:C,from,
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@echo ${VAR:C,from,to
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@echo ${VAR:C,from,to,
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@echo ${VAR:C,from,to,}
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@echo 1: ${VAR:C
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@echo 2: ${VAR:C,
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@echo 3: ${VAR:C,from
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@echo ${VAR:C,from,
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@echo ${VAR:C,from,to
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@echo ${VAR:C,from,to,
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@echo ${VAR:C,from,to,}
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mod-ts-parse:
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@echo $@:
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@echo ${FIB:ts}
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@echo ${FIB:ts\65} # octal 065 == U+0035 == '5'
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@echo ${FIB:ts\65oct} # bad modifier
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@echo ${FIB:tsxy} # modifier too long
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mod-t-parse:
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@echo $@:
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@echo ${FIB:txy}
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@echo ${FIB:t}
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@echo ${FIB:t:M*}
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mod-ifelse-parse:
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@echo $@:
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@echo ${FIB:?
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@echo ${FIB:?then
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@echo ${FIB:?then:
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@echo ${FIB:?then:else
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@echo ${FIB:?then:else}
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mod-assign-parse:
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@echo $@:
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@echo ${ASSIGN::x} # 'x' is an unknown assignment operator
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@echo ${::=value} # trying to set the empty variable
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@echo ${ASSIGN::=value # missing closing brace
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mod-remember-parse:
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@echo $@:
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@echo ${FIB:_} # ok
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@echo ${FIB:__} # modifier name too long
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mod-sysv-parse:
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@echo $@:
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@echo ${FIB:3
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@echo ${FIB:3=
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@echo ${FIB:3=x3
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@echo ${FIB:3=x3} # ok
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