Commits on Apr 22, 2024

1. lexer: allow TABS for indentation …

   Allow TAB character to be used for indentation.
   
   This is useful to have TAB character used as indentation, especially when
   parts of build.ninja are hand-written as HEREDOCs in otherwise
   TAB-indented file (either mandated by style for other part of project, or
   required by language itself).
   
   Changing lexer is easy thanks to the use of re2c, syntax is perhaps a bit
   too permissive now, but that is job of the parser to reject use of mixed
   indentation.
   
   Let's stop complaining that:
   ninja: error: build.ninja:3: expected 'command =' line
   when it is exactly:
   	command = cc $cflags -c $in -o $out
   
   tests: print string instead of int for Lexer::Token
   
   Extend C++ tests by a wrapper for Lexer::Token printing, to have string
   value reported instead of numeric value, that gives "newline" instead of
   "8" in test results.
   Original line numbers are kept in error messages as they were before.
   
   Extend python functional test to have TABs used in both variable and build
   statements.
   
   Closes ninja-build#1598
   Signed-of-by: Przemek Kitszel <[email protected]>

   

   pkitszel committed Apr 22, 2024
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