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directive-elif.mk revision 1.8 
      1  1.8  rillig # $NetBSD: directive-elif.mk,v 1.8 2023/06/01 20:56:35 rillig Exp $
      2  1.1  rillig #
      3  1.2  rillig # Tests for the .elif directive.
      4  1.7  rillig #
      5  1.7  rillig # Misspellings of the .elif directive are not always detected.  They are only
      6  1.7  rillig # detected if the conditional branch directly above it is taken.  In all other
      7  1.7  rillig # cases, make skips over the skipped branch as fast as possible, looking only
      8  1.7  rillig # at the initial '.' of the line and whether the directive is one of the known
      9  1.7  rillig # conditional directives.  All other directives are silently ignored, as they
     10  1.7  rillig # could be variable assignments or dependency declarations as well, and
     11  1.7  rillig # deciding this would cost time.
     12  1.7  rillig 
     13  1.1  rillig 
     14  1.1  rillig # TODO: Implementation
     15  1.1  rillig 
     16  1.7  rillig 
     17  1.7  rillig # Misspelling '.elsif' below an .if branch that is not taken.
     18  1.7  rillig .if 0
     19  1.7  rillig .  info This branch is not taken.
     20  1.7  rillig # As of 2020-12-19, the misspelling is not recognized as a conditional
     21  1.7  rillig # directive and is thus silently skipped.
     22  1.7  rillig #
     23  1.7  rillig # Since the .if condition evaluated to false, this whole branch is not taken.
     24  1.7  rillig .elsif 0
     25  1.7  rillig .  info XXX: This misspelling is not detected.
     26  1.7  rillig .  info This branch is not taken.
     27  1.7  rillig # Even if the misspelling were detected, the branch would not be taken
     28  1.7  rillig # since the condition of the '.elsif' evaluates to false as well.
     29  1.7  rillig .endif
     30  1.7  rillig 
     31  1.7  rillig 
     32  1.7  rillig # Misspelling '.elsif' below an .if branch that is not taken.
     33  1.7  rillig .if 0
     34  1.7  rillig .  info This branch is not taken.
     35  1.7  rillig # As of 2020-12-19, the misspelling is not recognized as a conditional
     36  1.7  rillig # directive and is thus silently skipped.  Since the .if condition evaluated
     37  1.7  rillig # to false, this whole branch is not taken.
     38  1.7  rillig .elsif 1
     39  1.7  rillig .  info XXX: This misspelling is not detected.
     40  1.7  rillig # If the misspelling were detected, this branch would be taken.
     41  1.7  rillig .endif
     42  1.7  rillig 
     43  1.7  rillig 
     44  1.7  rillig # Misspelling '.elsif' below an .if branch that is taken.
     45  1.7  rillig .if 1
     46  1.7  rillig # This misspelling is in an active branch and is therefore detected.
     47  1.8  rillig # expect+1: Unknown directive "elsif"
     48  1.7  rillig .elsif 0
     49  1.7  rillig # The only thing that make detects here is a misspelled directive, make
     50  1.7  rillig # doesn't recognize that it was meant to be a conditional directive.
     51  1.7  rillig # Therefore the branch continues here, even though the '.elsif' condition
     52  1.7  rillig # evaluates to false.
     53  1.8  rillig # expect+1: This branch is taken.
     54  1.7  rillig .  info This branch is taken.
     55  1.7  rillig .endif
     56  1.7  rillig 
     57  1.7  rillig 
     58  1.7  rillig # Misspelling '.elsif' below an .if branch that is taken.
     59  1.7  rillig .if 1
     60  1.8  rillig # The misspelling is in an active branch and is therefore detected.
     61  1.8  rillig # expect+1: Unknown directive "elsif"
     62  1.7  rillig .elsif 1
     63  1.7  rillig # Since both conditions evaluate to true, this branch is taken no matter
     64  1.7  rillig # whether make detects a misspelling or not.
     65  1.8  rillig # expect+1: This branch is taken.
     66  1.7  rillig .  info This branch is taken.
     67  1.7  rillig .endif
     68  1.7  rillig 
     69  1.7  rillig 
     70  1.7  rillig # Misspelling '.elsif' in a skipped branch below a branch that was taken.
     71  1.3  rillig .if 1
     72  1.8  rillig # expect+1: This branch is taken.
     73  1.7  rillig .  info This branch is taken.
     74  1.7  rillig .elif 0
     75  1.7  rillig .  info This branch is not taken.
     76  1.7  rillig .elsif 1
     77  1.7  rillig .  info XXX: This misspelling is not detected.
     78  1.3  rillig .endif
     79  1.3  rillig 
     80  1.7  rillig 
     81  1.7  rillig # Misspelling '.elsif' in an .else branch that is not taken.
     82  1.7  rillig .if 1
     83  1.7  rillig .else
     84  1.7  rillig .  info This branch is not taken.
     85  1.7  rillig .elsif 1
     86  1.7  rillig .  info XXX: This misspelling is not detected.
     87  1.3  rillig .endif
     88  1.3  rillig 
     89  1.7  rillig 
     90  1.7  rillig # Misspelling '.elsif' in an .else branch that is taken.
     91  1.3  rillig .if 0
     92  1.7  rillig .else
     93  1.8  rillig # expect+1: Unknown directive "elsif"
     94  1.7  rillig .elsif 1
     95  1.8  rillig # expect+1: This misspelling is detected.
     96  1.7  rillig .  info This misspelling is detected.
     97  1.8  rillig # expect+1: This branch is taken because of the .else.
     98  1.7  rillig .  info This branch is taken because of the .else.
     99  1.3  rillig .endif
    100  1.7  rillig 
    101  1.7  rillig 
    102  1.7  rillig # Misspellings for .elif in a .elif branch that is not taken.
    103  1.3  rillig .if 0
    104  1.7  rillig .  info This branch is not taken.
    105  1.7  rillig .elif 0				# ok
    106  1.7  rillig .  info This branch is not taken.
    107  1.7  rillig .elsif 0
    108  1.7  rillig .  info XXX: This misspelling is not detected.
    109  1.7  rillig .  info This branch is not taken.
    110  1.7  rillig .elseif 0
    111  1.7  rillig .  info XXX: This misspelling is not detected.
    112  1.7  rillig .  info This branch is not taken.
    113  1.3  rillig .endif
    114  1.3  rillig 
    115  1.7  rillig 
    116  1.8  rillig # expect+1: What happens on misspelling in a skipped branch?
    117  1.7  rillig .info What happens on misspelling in a skipped branch?
    118  1.3  rillig .if 0
    119  1.3  rillig .  info 0-then
    120  1.3  rillig .elsif 1
    121  1.7  rillig .  info XXX: This misspelling is not detected.
    122  1.3  rillig .  info 1-elsif
    123  1.3  rillig .elsif 2
    124  1.7  rillig .  info XXX: This misspelling is not detected.
    125  1.3  rillig .  info 2-elsif
    126  1.3  rillig .else
    127  1.8  rillig # expect+1: else
    128  1.3  rillig .  info else
    129  1.3  rillig .endif
    130  1.3  rillig 
    131  1.8  rillig # expect+1: What happens on misspelling in a taken branch?
    132  1.7  rillig .info What happens on misspelling in a taken branch?
    133  1.3  rillig .if 1
    134  1.8  rillig # expect+1: 1-then
    135  1.3  rillig .  info 1-then
    136  1.8  rillig # expect+1: Unknown directive "elsif"
    137  1.3  rillig .elsif 1
    138  1.8  rillig # expect+1: 1-elsif
    139  1.3  rillig .  info 1-elsif
    140  1.8  rillig # expect+1: Unknown directive "elsif"
    141  1.3  rillig .elsif 2
    142  1.8  rillig # expect+1: 2-elsif
    143  1.3  rillig .  info 2-elsif
    144  1.3  rillig .else
    145  1.3  rillig .  info else
    146  1.3  rillig .endif
    147  1.3  rillig 
    148  1.8  rillig # expect+1: if-less elif
    149  1.4  rillig .elif 0
    150  1.4  rillig 
    151  1.4  rillig .if 1
    152  1.4  rillig .else
    153  1.8  rillig # expect+1: warning: extra elif
    154  1.4  rillig .elif
    155  1.4  rillig .endif
    156  1.4  rillig 
    157  1.1  rillig all:
    158