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326e5c640d
Estimated hours taken: 1 Corrected a bug in moose whereby it failed to return a non-zero exit code when a critical error occured. Converted moose to modern syntax with regard to DCGs and State Variables and module delimters such as '__' vs '.'. Converted some indentation to four spaces. extras/moose/check.m: extras/moose/grammar.m: extras/moose/lalr.m: extras/moose/mercury_syntax.m: extras/moose/misc.m: extras/moose/moose.m: extras/moose/options.m: extras/moose/tables.m: As above. extras/moose/BUGS Noted a new bug. extras/moose/TODO Corrected a spelling mistake.
30 lines
1002 B
Plaintext
30 lines
1002 B
Plaintext
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Copyright (C) 2009 The University of Melbourne
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To make moose more useful:
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- allow parsing actions to be semidet to allow the imposition
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of semantic conditions during parsing.
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- add error productions to produce nice error messages.
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Cosmetic improvements:
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- handle errors in the input better by faking declarations for
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undeclared productions; faking a clause for declared nonterminals
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with no clauses ; faking declarations and a clause (eg A -> epsilon)
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for nonterminals that get used but have no clauses and no
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declaration.
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- provide the ability to dump a list of the terminal symbols.
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- make the various dumps go to files other than the .m file.
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Wish list:
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- introduce new nonterminals for disjunctions in productions.
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This is quite difficult because it requires correct computation
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of the nonlocal variables of goals (including all the nasty
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cases like pred expressions).
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- Implement the groovey PDA algorithms suggested by Andrew.
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- compile away the tables.
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