Parents (Total: 2)

The searched file hash is included in 2 parent files which include package known and seen by metalookup. A sample is included below:

Key	Value
FileSize	563396
MD5	5180FE28B5F47328886488547BF2785A
PackageDescription	Manual of the frown parser generator for Haskell 98 The manual and examples of the frown LALR(k) parser generator. , Frown is inspired by the parser generator Happy and uses a syntax quite simular as the syntax used by Happy. Happy only handles LALR(1) grammars while Frown can use more extensive LALR(k) grammars and the parsers generated by Frown are also faster than the parsers generated by Happy. . The salient features of Frown 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, 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.
PackageMaintainer	Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
PackageName	frown-doc
PackageSection	doc
PackageVersion	0.6.1-12
SHA-1	1D40ADBA5EC953E0BCE1590136FD2CA275DB1C62
SHA-256	B919057C84A5A8CE102391CD36B6583B25E51B4421A2D6C3AF74BBE6F887071E

Key	Value
FileSize	564000
MD5	C09319D36FAD4BD1A1944694463E1BEA
PackageDescription	Manual of the frown parser generator for Haskell 98 The manual and examples of the frown LALR(k) parser generator. , Frown is inspired by the parser generator Happy and uses a syntax quite simular as the syntax used by Happy. Happy only handles LALR(1) grammars while Frown can use more extensive LALR(k) grammars and the parsers generated by Frown are also faster than the parsers generated by Happy. . The salient features of Frown 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, 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.
PackageMaintainer	Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
PackageName	frown-doc
PackageSection	doc
PackageVersion	0.6.1-13
SHA-1	364C97306A4F546CDF35907BD9F334F0AD8F4B62
SHA-256	1B5EC951566D57B4839A2C12337EC9D4FCA7FDE198CB41D7583C51DDE8B67BD1