mirror of
https://github.com/freebsd/freebsd-src
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2935fe8237
Relevant changes see ChangeLog for details:
Add support for ${.SUFFIXES} as read-only variable.
Fix memory leak in cond.c
Punt on write errors - ENOSPC etc.
Lots of code refactoring, rework to reduce memory allocations.
More unit-tests.
139 lines
3.2 KiB
Makefile
139 lines
3.2 KiB
Makefile
# $NetBSD: cond-cmp-string.mk,v 1.15 2021/12/11 09:53:53 rillig Exp $
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#
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# Tests for string comparisons in .if conditions.
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# This is a simple comparison of string literals.
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# Nothing surprising here.
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.if "str" != "str"
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. error
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.endif
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# The right-hand side of the comparison may be written without quotes.
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.if "str" != str
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. error
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.endif
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# The left-hand side of the comparison must be enclosed in quotes.
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# This one is not enclosed in quotes and thus generates an error message.
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.if str != str
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. error
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.endif
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# The left-hand side of the comparison requires that any variable expression
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# is defined.
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#
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# The variable named "" is never defined, nevertheless it can be used as a
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# starting point for variable expressions. Applying the :U modifier to such
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# an undefined expression turns it into a defined expression.
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#
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# See ApplyModifier_Defined and DEF_DEFINED.
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.if ${:Ustr} != "str"
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. error
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.endif
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# Any character in a string literal may be escaped using a backslash.
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# This means that "\n" does not mean a newline but a simple "n".
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.if "string" != "\s\t\r\i\n\g"
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. error
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.endif
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# It is not possible to concatenate two string literals to form a single
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# string. In C, Python and the shell this is possible, but not in make.
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.if "string" != "str""ing"
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. error
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.else
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. error
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.endif
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# There is no = operator for strings.
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.if !("value" = "value")
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. error
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.else
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. error
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.endif
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# There is no === operator for strings either.
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.if !("value" === "value")
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. error
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.else
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. error
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.endif
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# A variable expression can be enclosed in double quotes.
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.if ${:Uword} != "${:Uword}"
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. error
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.endif
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# Between 2003-01-01 (maybe even earlier) and 2020-10-30, adding one of the
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# characters " \t!=><" directly after a variable expression resulted in a
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# "Malformed conditional", even though the string was well-formed.
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.if ${:Uword } != "${:Uword} "
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. error
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.endif
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# Some other characters worked though, and some didn't.
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# Those that are mentioned in is_separator didn't work.
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.if ${:Uword0} != "${:Uword}0"
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. error
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.endif
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.if ${:Uword&} != "${:Uword}&"
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. error
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.endif
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.if ${:Uword!} != "${:Uword}!"
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. error
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.endif
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.if ${:Uword<} != "${:Uword}<"
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. error
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.endif
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# Adding another variable expression to the string literal works though.
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.if ${:Uword} != "${:Uwo}${:Urd}"
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. error
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.endif
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# Adding a space at the beginning of the quoted variable expression works
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# though.
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.if ${:U word } != " ${:Uword} "
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. error
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.endif
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# If at least one side of the comparison is a string literal, the string
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# comparison is performed.
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.if 12345 != "12345"
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. error
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.endif
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# If at least one side of the comparison is a string literal, the string
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# comparison is performed. The ".0" in the left-hand side makes the two
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# sides of the equation unequal.
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.if 12345.0 == "12345"
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. error
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.endif
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# Strings cannot be compared relationally, only for equality.
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.if "string" < "string"
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. error
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.else
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. error
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.endif
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# Strings cannot be compared relationally, only for equality.
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.if "string" <= "string"
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. error
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.else
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. error
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.endif
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# Strings cannot be compared relationally, only for equality.
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.if "string" > "string"
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. error
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.else
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. error
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.endif
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# Strings cannot be compared relationally, only for equality.
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.if "string" >= "string"
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. error
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.else
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. error
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.endif
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