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cond-token-number.mk revision 1.5 
      1  1.5  rillig # $NetBSD: cond-token-number.mk,v 1.5 2020/11/15 14:58:14 rillig Exp $
      2  1.1  rillig #
      3  1.2  rillig # Tests for number tokens in .if conditions.
      4  1.5  rillig #
      5  1.5  rillig # TODO: Add introduction.
      6  1.1  rillig 
      7  1.3  rillig .if 0
      8  1.3  rillig .  error
      9  1.3  rillig .endif
     10  1.1  rillig 
     11  1.3  rillig # Even though -0 is a number and would be accepted by strtod, it is not
     12  1.3  rillig # accepted by the condition parser.
     13  1.3  rillig #
     14  1.3  rillig # See the ch_isdigit call in CondParser_String.
     15  1.3  rillig .if -0
     16  1.3  rillig .  error
     17  1.5  rillig .else
     18  1.5  rillig .  error
     19  1.3  rillig .endif
     20  1.3  rillig 
     21  1.3  rillig # Even though +0 is a number and would be accepted by strtod, it is not
     22  1.3  rillig # accepted by the condition parser.
     23  1.3  rillig #
     24  1.3  rillig # See the ch_isdigit call in CondParser_String.
     25  1.3  rillig .if +0
     26  1.3  rillig .  error
     27  1.5  rillig .else
     28  1.5  rillig .  error
     29  1.3  rillig .endif
     30  1.3  rillig 
     31  1.3  rillig # Even though -1 is a number and would be accepted by strtod, it is not
     32  1.3  rillig # accepted by the condition parser.
     33  1.3  rillig #
     34  1.3  rillig # See the ch_isdigit call in CondParser_String.
     35  1.3  rillig .if !-1
     36  1.3  rillig .  error
     37  1.5  rillig .else
     38  1.5  rillig .  error
     39  1.3  rillig .endif
     40  1.3  rillig 
     41  1.3  rillig # Even though +1 is a number and would be accepted by strtod, it is not
     42  1.3  rillig # accepted by the condition parser.
     43  1.3  rillig #
     44  1.3  rillig # See the ch_isdigit call in CondParser_String.
     45  1.3  rillig .if !+1
     46  1.3  rillig .  error
     47  1.5  rillig .else
     48  1.5  rillig .  error
     49  1.3  rillig .endif
     50  1.3  rillig 
     51  1.3  rillig # When the number comes from a variable expression though, it may be signed.
     52  1.3  rillig # XXX: This is inconsistent.
     53  1.3  rillig .if ${:U+0}
     54  1.3  rillig .  error
     55  1.3  rillig .endif
     56  1.3  rillig 
     57  1.3  rillig # When the number comes from a variable expression though, it may be signed.
     58  1.3  rillig # XXX: This is inconsistent.
     59  1.3  rillig .if !${:U+1}
     60  1.3  rillig .  error
     61  1.3  rillig .endif
     62  1.3  rillig 
     63  1.4  rillig # Hexadecimal numbers are accepted.
     64  1.4  rillig .if 0x0
     65  1.4  rillig .  error
     66  1.4  rillig .endif
     67  1.4  rillig .if 0x1
     68  1.4  rillig .else
     69  1.4  rillig .  error
     70  1.4  rillig .endif
     71  1.4  rillig 
     72  1.4  rillig # This is not a hexadecimal number, even though it has an x.
     73  1.4  rillig # It is interpreted as a string instead, effectively meaning defined(3x4).
     74  1.4  rillig .if 3x4
     75  1.4  rillig .else
     76  1.4  rillig .  error
     77  1.4  rillig .endif
     78  1.4  rillig 
     79  1.3  rillig # Ensure that parsing continues until here.
     80  1.3  rillig .info End of the tests.
     81  1.3  rillig 
     82  1.3  rillig all: # nothing
     83