Changelog of @hackage/cpphs 1.18

Version 1.18

  • better lexing of Template Haskell single quotes (thanks to Stephan Wehr)

Version 1.17

  • recursively evaluate #if expressions after macro expansion (fix)
  • (1.17.1): report the right version with cpphs --version

Version 1.16

  • fix interaction of runCpphsReturningSymTab with --nomacro

Version 1.15

  • Fix the interaction of --nomacro with --strip.
  • Fix the error message received when # appears without a command.

Version 1.14

  • New API to return symbol table after processing.

Version 1.13

  • Accept -U cmdline option for compatibility with cpp.

Version 1.12

  • Allow it to build with ghc-7.2.

Version 1.11

  • API change: runCpphs, cppIfdef, and macroPass are now in the IO monad.

Version 1.10

  • New command-line option: "--linepragma" It converts #line droppings into {-# LINE #-}.

Version 1.9

  • Bugfix for #undef.

Version 1.8

  • Bugfix for off-by-one error in line numbers with --include=file.

Version 1.7

  • Bugfix in interaction of --unlit with \end{code}

Version 1.6

  • New command-line option: "--include=filename".
  • New command-line option: "--strip-eol" for comment-stripping.
  • Line pragmas can have filenames containing spaces.

Version 1.5

  • Parametrised macro-calls now permitted in #ifdef's.
  • Recursive textual expansion now permitted in #ifdef's.
  • Better options-handling when used as a library.
  • Various small bugfixes

Version 1.4

  • Added a "--pragma" option to retain #pragma in the output.
  • Fixed a number of obscure corner cases involving the interaction of multiple features e.g. foo##LINE.
  • Added the "--nowarn" option.

Version 1.3

  • Added a "--cpp" option for drop-in compatibility with standard cpp. It causes cpphs to accept standard cpp flags and translate them to cpphs equivalents. Compatibility options include: -o, -ansi, -traditional, -stdc, -x, -include, -P, -C, -CC, -A. The file behaviour is different too - if two filenames are given on the commandline, then the second is treated as the output location.
  • Fixed a corner-case bug in evaluating chained and overlapping #ifdefs.

Version 1.2

  • Re-arranged the source files into hierarchical libraries.
  • Exposed the library interface as an installable Cabal package, with Haddock documentation.
  • Added the --unlit option, for removing literate-style comments.

Version 1.1

  • Fix the .cabal way of building cpphs.
  • Update the --version reported (forgotten in 1.0, which still reports 0.9)
  • No longer throws an error when given an empty file as input.

Version 1.0

  • Add a compatibility script cpphs.compat, allowing cpphs to act as a drop-in replacement for cpp, e.g. ghc -cpp -pgmP cpphs.compat
  • Place quotes around replacements for special macros FILE, DATE, and TIME.
  • If no files are specified, read from stdin.
  • Ignore #! lines (e.g. in scripts)
  • Parse -D commandline options once only, and consistently with cpp, i.e. -Dfoo means foo=1
  • Fix compatibility with preprocessors like hsc2hs, which use non-cpp directives like #def. They are now passed through to the output with a warning to stderr.

Version 0.9

  • Bugfix for ghc-6.4 -O: flush the output buffer.

Version 0.8

  • Added the --text option, to signify the input should not be lexed as Haskell. This causes macros to be defined or expanded regardless of their location within comments, string delimiters, etc.
  • Shuffle a few files around to make it easier to say 'hmake cpphs'. There is also now a runhugs script to invoke cpphs nicely.

Version 0.7

  • Enable the FILE, LINE, DATE, and TIME specials, which can be useful for creating DIY error messages.

Version 0.6

  • Recognise and ignore the #pragma cpp directive.
  • Fix beginning-of-file bug, where in --noline mode, a # cpp directive at the top of the file appeared in the output.
  • Fix chained parenthesised boolean exprs in #if, e.g. #if ( foo ) && ( bar )
  • Fix precedence in chained unparenthesised boolean exprs in #if, e.g. #if foo && bar || baz && frob
  • For better compatibility with cpp, and because otherwise there are certain constructs that cannot be expressed, we no longer permit whitespace in a #define between the symbolname and an opening parenthesis, e.g. #define f (f' id) Previously, this was interpreted as a parametrised macro, with arguments in the parens, and no expansion. Now, the space indicates that this is a textual replacement, and the parenthesised expression is in fact the replacement.

Version 0.5

  • Added a --version flag to report the version number.
  • Renamed --stringise to --hashes, and use it to turn on ## catenation as well.
  • Bugfix for #if 1, previously taken as false.
  • Bugfix for --nolines: it no longer adds extra spurious newlines.
  • File inclusion now looks in the directory of the calling file.
  • Failure to find an include file is now merely a warning to stderr rather than an error.
  • Added a --layout flag. Previously, line continuations in a macro definition were always preserved in the output, permitting use of the Haskell layout rule even inside a macro. The default is now to remove line continuations for conformance with cpp, but the option of using --layout is still possible.

Version 0.4

  • New flag -Ofile to redirect output
  • Bugfix for precedence in #if !False && False
  • Bugfix for whitespace between # and if
  • Bugfix for #define F "blah"; #include F

Version 0.3

  • Bugfix for recursive macro expansion.
  • New flag --strip to remove C comments even outside cpp directives.
  • New flag --stringise to recognise the # stringise operator in macros.

Version 0.2

  • New flag --noline to eliminate #line directives from output.
  • Add symbol-replacement and macro-expansion.
  • New flag --nomacro to turn off symbol/macro-expansion.

2004-Apr-21

  • Now accept multi-line # commands via the \ line continuation operator. The original file line numbering is preserved in the output by some tricky acrobatics.

Version 0.1

  • Initial release.