2020-11-07 19:39:21 +00:00
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# $NetBSD: varmod-range.mk,v 1.7 2020/11/01 14:36:25 rillig Exp $
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2020-09-05 16:11:04 +00:00
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#
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# Tests for the :range variable modifier, which generates sequences
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# of integers from the given range.
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2020-11-07 19:39:21 +00:00
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#
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# See also:
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# modword.mk
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# The :range modifier generates a sequence of integers, one number per
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# word of the variable expression's value.
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.if ${a b c:L:range} != "1 2 3"
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. error
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.endif
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# To preserve spaces in a word, they can be enclosed in quotes, just like
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# everywhere else.
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.if ${:U first "the second word" third 4 :range} != "1 2 3 4"
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. error
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.endif
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# The :range modifier takes the number of words from the value of the
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# variable expression. If that expression is undefined, the range is
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# undefined as well. This should not come as a surprise.
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.if "${:range}" != ""
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. error
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.endif
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# The :range modifier can be given a parameter, which makes the generated
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# range independent from the value or the name of the variable expression.
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#
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# XXX: As of 2020-09-27, the :range=... modifier does not turn the undefined
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# expression into a defined one. This looks like an oversight.
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.if "${:range=5}" != ""
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. error
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.endif
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# Negative ranges don't make sense.
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# As of 2020-11-01, they are accepted though, using up all available memory.
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#.if "${:range=-1}"
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#. error
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#.else
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#. error
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#.endif
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# The :range modifier requires a number as parameter.
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#
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# Until 2020-11-01, the parser tried to read the 'x' as a number, failed and
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# stopped there. It then tried to parse the next modifier at that point,
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# which failed with the message "Unknown modifier".
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#
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# Since 2020-11-01, the parser issues a more precise "Invalid number" error
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# instead.
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.if "${:U:range=x}Rest" != "Rest"
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. error
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.else
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. error
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.endif
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# The upper limit of the range must always be given in decimal.
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# This parse error stops at the 'x', trying to parse it as a variable
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# modifier.
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.if "${:U:range=0x0}Rest" != "Rest"
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. error
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.else
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. error
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.endif
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# As of 2020-11-01, numeric overflow is not detected.
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# Since strtoul returns ULONG_MAX in such a case, it is interpreted as a
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# very large number, consuming all available memory.
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#.if "${:U:range=18446744073709551619}Rest" != "Rest"
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#. error
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#.else
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#. error
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#.endif
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# modifier name too short
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.if "${a b c:L:rang}Rest" != "Rest"
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. error
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.else
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. error
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.endif
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# misspelled modifier name
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.if "${a b c:L:rango}Rest" != "Rest"
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. error
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.else
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. error
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.endif
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# modifier name too long
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.if "${a b c:L:ranger}Rest" != "Rest"
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. error
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.else
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. error
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.endif
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2020-09-05 16:11:04 +00:00
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all:
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