lemon.external.gadfly.kjParser

Package lemon :: Package external :: Package gadfly :: Module kjParser

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Module lemon.external.gadfly.kjParser

Python for parser interpretation

:Author: Aaron Watters
:Maintainers: http://gadfly.sf.net/
:Copyright: Aaron Robert Watters, 1994
:Id: $Id: kjParser.py,v 1.1 2003/08/12 09:17:12 thejimmyg Exp $:

Classes
`FSMachine`
`Grammar`	the grammar class:...
`KeywordDict`
`lexdictionary`
`LexDictionary`
`LexStringWalker`
`ParserObj`	the parse class: Based loosely on Aho+Ullman, Principles of Compiler Design, Ch.6.
`ParseRule`	the rule class...
`UnMarshaller`	unmarshalling object for unmarshalling grammar from a python module...

Exceptions
`BadPunctError`	if try to make whitespace a punct...
`FlowError`	shouldn't happen!!! (bug)...
`LexTokenError`	may happen on bad string...
`NondetError`	shouldn't happen?...
`ParseInitError`	shouldn't happen?...
`ReductError`	shouldn't happen?...
`UnkTermError`	ditto...

Function Summary
	`DefaultReductFun(RuleResultsList, Context)` used as a default reduction function for rules...
	`DumpStringWindow(Str, Pos, Offset)`
	`nonterminal(string)` function for declaring a variable to represent a nonterminal:...
	`NullGrammar()` function to create a "null grammar"...
	`PrintDefaultBindings(rulelist)` for debugging: look through a rule list and print names of rules...
	`RMATCH(re, key, start)`
	`termrep(string)` declaring a terminal WITHOUT INSTALLING IT IN A LexDict...
	`UnMarshalGram(file)` unmarshalling a marshalled grammar created by buildmodule.CGrammar.MarshalDump(Tofile) tightly coupled with buildmodule code...

Variable Summary
`tuple`	`ENDOFFILETERM` = `((-8, ''), '')`
`tuple`	`ENDOFFILETOKEN` = `(-8, '*')`
`int`	`RUNTESTS` = 0
`str`	`THISMODULE` = `'gadfly.kjParser'`
`int`	`WARNONDEFAULTS` = 0
`str`	`WHITERE` = `'[\t\n\x0b\x0c\r ]+'`
`SRE_Pattern`	`WHITEREGEX` = `[\t\n\v\f\r ]+`

Function Details

DefaultReductFun(RuleResultsList, Context)

used as a default reduction function for rules

nonterminal(string)

function for declaring a variable to represent a nonterminal:
eg Program = nonterminal("program")
 included for convenient autodocumentation

NullGrammar()

function to create a "null grammar"

PrintDefaultBindings(rulelist)

for debugging: look through a rule list and print names of rules
that have default binding

termrep(string)

declaring a terminal WITHOUT INSTALLING IT IN A LexDict

UnMarshalGram(file)

unmarshalling a marshalled grammar created by
  buildmodule.CGrammar.MarshalDump(Tofile)
  tightly coupled with buildmodule code...
file should be open and "pointing to" the marshalled rep.

warning: doesn't bind semantics!

Variable Details

ENDOFFILETERM

Type:: tuple
Value:: ((-8, '*'), '*')

ENDOFFILETOKEN

Type:: tuple
Value:: (-8, '*')

RUNTESTS

Type:: int
Value:: 0

THISMODULE

Type:: str
Value:: 'gadfly.kjParser'

WARNONDEFAULTS

Type:: int
Value:: 0

WHITERE

Type:: str
Value:: '''[\t \x0b\x0c\r ]+'''

WHITEREGEX

Type:: SRE_Pattern
Value:: [\t\n\v\f\r ]+

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