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Пакет: frown (0.6.2.3-4)

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frown

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LALR(k) parser generator

Frown is an LALR(k) parser generator for Haskell 98 written in Haskell 98.

Its salient features are:

   -  The generated parsers are time and space efficient. On the downside, the
      parsers are quite large.
   -  Frown generates four different types of parsers. as a common
      characteristic, the parsers are genuinely functional (ie ‘table-free’);
      the states of the underlying LR automaton are encoded as mutually
      recursive functions. Three output formats use a typed stack
      representation, and one format due to Ross Paterson (code=stackless)
      works even without a stack.
   -  Encoding states as functions means that each state can be treated
      individually as opposed to a table-driven approach, which necessitates a
      uniform treatment of states. For instance, look-ahead is only used when
      necessary to resolve conflicts.
   -  Frown comes with debugging and tracing facilities; the standard output
      format due to Doaitse Swierstra (code=standard) may be useful for
      teaching LR parsing.
   -  Common grammatical patterns such as repetition of symbols can be
      captured using rule schemata. There are several predefined rule
      schemata.
   -  Terminal symbols are arbitrary variable-free Haskell patterns or guards.
      Both terminal and nonterminal symbols may have an arbitrary number of
      synthesized attributes.
   -  Frown comes with extensive documentation; several example grammars are
      included. Furthermore, Frown supports the use of monadic lexers, monadic
      semantic actions, precedences, and associativity, the generation of
      backtracking parsers, multiple start symbols, error reporting, and a
      weak form of error correction.

Други пакети, свързани с frown

  • зависимости
  • препоръчани
  • предложени
  • dep: libc6 (>= 2.15)
    GNU C Library: Shared libraries
    също и виртуален пакет, предлаган от libc6-udeb
  • dep: libffi6 (>= 3.0.4)
    Foreign Function Interface library runtime
  • dep: libgmp10
    Multiprecision arithmetic library
  • rec: frown-doc (= 0.6.2.3-4)
    LALR(k) parser generator -- documentation

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Архитектура Големина на пакета Големина след инсталиране Файлове
amd64 455,7 кБ2390 кБ [списък на файловете]
i386 449,2 кБ1912 кБ [списък на файловете]