Safe Haskell	None
Language	Haskell2010

Text.Regex.TDFA.TDFA

Description

Text.Regex.TDFA.TDFA converts the QNFA from TNFA into the DFA. A DFA state corresponds to a Set of QNFA states, represented as list of Index which are used to lookup the DFA state in a lazy Trie which holds all possible subsets of QNFA states.

Synopsis

patternToRegex :: (Pattern, (GroupIndex, DoPa)) -> CompOption -> ExecOption -> Regex
data DFA = DFA {
- d_id :: SetIndex
- d_dt :: DT
}
data DT
- = Simple' {
  - dt_win :: IntMap Instructions
  - dt_trans :: CharMap Transition
  - dt_other :: Transition
  }
- | Testing' {
  - dt_test :: WhichTest
  - dt_dopas :: EnumSet DoPa
  - dt_a :: DT
  - dt_b :: DT
  }
examineDFA :: Regex -> String
nfaToDFA :: ((Index, Array Index QNFA), Array Tag OP, Array GroupIndex [GroupInfo]) -> CompOption -> ExecOption -> Regex
dfaMap :: DFA -> Map SetIndex DFA

Documentation

patternToRegex :: (Pattern, (GroupIndex, DoPa)) -> CompOption -> ExecOption -> Regex Source #

data DFA Source #

Internal DFA node, identified by the Set of indices of the QNFA nodes it represents.

Constructors

DFA
Fields d_id :: SetIndex d_dt :: DT

Instances

Instances details

Show DFA Source #
Instance details Defined in Text.Regex.TDFA.Common Methods showsPrec :: Int -> DFA -> ShowS # show :: DFA -> String # showList :: [DFA] -> ShowS #

data DT Source #

Internal to the DFA node

Constructors

Simple'
Fields dt_win :: IntMap Instructions Actions to perform to win dt_trans :: CharMap Transition Transition to accept Char dt_other :: Transition default accepting transition
Testing'
Fields dt_test :: WhichTest The test to perform dt_dopas :: EnumSet DoPa location(s) of the anchor(s) in the original regexp dt_a :: DT use dt_a if test is True else use dt_b dt_b :: DT use dt_a if test is True else use dt_b

Instances

Instances details

Show DT Source #
Instance details Defined in Text.Regex.TDFA.Common Methods showsPrec :: Int -> DT -> ShowS # show :: DT -> String # showList :: [DT] -> ShowS #

examineDFA :: Regex -> String Source #

nfaToDFA :: ((Index, Array Index QNFA), Array Tag OP, Array GroupIndex [GroupInfo]) -> CompOption -> ExecOption -> Regex Source #

dfaMap :: DFA -> Map SetIndex DFA Source #