281 lines
9.2 KiB
Plaintext
281 lines
9.2 KiB
Plaintext
{-# LINE 1 "templates/GenericTemplate.hs" #-}
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{-# LINE 1 "templates/GenericTemplate.hs" #-}
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{-# LINE 1 "<built-in>" #-}
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{-# LINE 1 "templates/GenericTemplate.hs" #-}
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-- Id: GenericTemplate.hs,v 1.26 2005/01/14 14:47:22 simonmar Exp
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{-# LINE 13 "templates/GenericTemplate.hs" #-}
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{-# LINE 46 "templates/GenericTemplate.hs" #-}
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data Happy_IntList = HappyCons Int Happy_IntList
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{-# LINE 67 "templates/GenericTemplate.hs" #-}
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{-# LINE 77 "templates/GenericTemplate.hs" #-}
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happyTrace string expr = Happy_System_IO_Unsafe.unsafePerformIO $ do
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Happy_System_IO.hPutStr Happy_System_IO.stderr string
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return expr
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infixr 9 `HappyStk`
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data HappyStk a = HappyStk a (HappyStk a)
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-----------------------------------------------------------------------------
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-- starting the parse
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happyParse start_state = happyNewToken start_state notHappyAtAll notHappyAtAll
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-----------------------------------------------------------------------------
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-- Accepting the parse
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-- If the current token is (0), it means we've just accepted a partial
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-- parse (a %partial parser). We must ignore the saved token on the top of
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-- the stack in this case.
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happyAccept (0) tk st sts (_ `HappyStk` ans `HappyStk` _) =
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happyReturn1 ans
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happyAccept j tk st sts (HappyStk ans _) =
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(happyReturn1 ans)
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-----------------------------------------------------------------------------
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-- Arrays only: do the next action
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happyDoAction i tk st
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= (happyTrace ("state: " ++ show (st) ++
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{-# LINE 112 "templates/GenericTemplate.hs" #-}
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",\ttoken: " ++ show (i) ++
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{-# LINE 112 "templates/GenericTemplate.hs" #-}
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",\taction: ")) $
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case action of
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(0) -> (happyTrace ("fail.\n")) $
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happyFail i tk st
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(-1) -> (happyTrace ("accept.\n")) $
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happyAccept i tk st
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n | (n < ((0) :: Int)) -> (happyTrace ("reduce (rule " ++ show rule
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{-# LINE 120 "templates/GenericTemplate.hs" #-}
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++ ")")) $
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(happyReduceArr Happy_Data_Array.! rule) i tk st
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where rule = ((negate ((n + ((1) :: Int)))))
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n -> (happyTrace ("shift, enter state "
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{-# LINE 124 "templates/GenericTemplate.hs" #-}
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++ show (new_state)
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{-# LINE 124 "templates/GenericTemplate.hs" #-}
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++ "\n")) $
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happyShift new_state i tk st
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where new_state = (n - ((1) :: Int))
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where off = indexShortOffAddr happyActOffsets st
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off_i = (off + i)
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check = if (off_i >= ((0) :: Int))
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then (indexShortOffAddr happyCheck off_i == i)
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else False
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action
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| check = indexShortOffAddr happyTable off_i
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| otherwise = indexShortOffAddr happyDefActions st
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{-# LINE 147 "templates/GenericTemplate.hs" #-}
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indexShortOffAddr arr off = arr Happy_Data_Array.! off
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-----------------------------------------------------------------------------
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-- HappyState data type (not arrays)
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{-# LINE 170 "templates/GenericTemplate.hs" #-}
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-----------------------------------------------------------------------------
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-- Shifting a token
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happyShift new_state (0) tk st sts stk@(x `HappyStk` _) =
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let i = (case x of { HappyErrorToken (i) -> i }) in
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-- trace "shifting the error token" $
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happyDoAction i tk new_state (HappyCons (st) (sts)) (stk)
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happyShift new_state i tk st sts stk =
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happyNewToken new_state (HappyCons (st) (sts)) ((HappyTerminal (tk))`HappyStk`stk)
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-- happyReduce is specialised for the common cases.
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happySpecReduce_0 i fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happySpecReduce_0 nt fn j tk st@((action)) sts stk
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= happyGoto nt j tk st (HappyCons (st) (sts)) (fn `HappyStk` stk)
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happySpecReduce_1 i fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happySpecReduce_1 nt fn j tk _ sts@((HappyCons (st@(action)) (_))) (v1`HappyStk`stk')
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= let r = fn v1 in
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happySeq r (happyGoto nt j tk st sts (r `HappyStk` stk'))
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happySpecReduce_2 i fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happySpecReduce_2 nt fn j tk _ (HappyCons (_) (sts@((HappyCons (st@(action)) (_))))) (v1`HappyStk`v2`HappyStk`stk')
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= let r = fn v1 v2 in
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happySeq r (happyGoto nt j tk st sts (r `HappyStk` stk'))
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happySpecReduce_3 i fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happySpecReduce_3 nt fn j tk _ (HappyCons (_) ((HappyCons (_) (sts@((HappyCons (st@(action)) (_))))))) (v1`HappyStk`v2`HappyStk`v3`HappyStk`stk')
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= let r = fn v1 v2 v3 in
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happySeq r (happyGoto nt j tk st sts (r `HappyStk` stk'))
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happyReduce k i fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happyReduce k nt fn j tk st sts stk
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= case happyDrop (k - ((1) :: Int)) sts of
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sts1@((HappyCons (st1@(action)) (_))) ->
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let r = fn stk in -- it doesn't hurt to always seq here...
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happyDoSeq r (happyGoto nt j tk st1 sts1 r)
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happyMonadReduce k nt fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happyMonadReduce k nt fn j tk st sts stk =
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case happyDrop k (HappyCons (st) (sts)) of
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sts1@((HappyCons (st1@(action)) (_))) ->
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let drop_stk = happyDropStk k stk in
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happyThen1 (fn stk tk) (\r -> happyGoto nt j tk st1 sts1 (r `HappyStk` drop_stk))
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happyMonad2Reduce k nt fn (0) tk st sts stk
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= happyFail (0) tk st sts stk
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happyMonad2Reduce k nt fn j tk st sts stk =
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case happyDrop k (HappyCons (st) (sts)) of
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sts1@((HappyCons (st1@(action)) (_))) ->
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let drop_stk = happyDropStk k stk
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off = indexShortOffAddr happyGotoOffsets st1
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off_i = (off + nt)
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new_state = indexShortOffAddr happyTable off_i
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in
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happyThen1 (fn stk tk) (\r -> happyNewToken new_state sts1 (r `HappyStk` drop_stk))
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happyDrop (0) l = l
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happyDrop n (HappyCons (_) (t)) = happyDrop (n - ((1) :: Int)) t
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happyDropStk (0) l = l
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happyDropStk n (x `HappyStk` xs) = happyDropStk (n - ((1)::Int)) xs
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-----------------------------------------------------------------------------
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-- Moving to a new state after a reduction
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happyGoto nt j tk st =
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(happyTrace (", goto state " ++ show (new_state) ++ "\n")) $
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happyDoAction j tk new_state
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where off = indexShortOffAddr happyGotoOffsets st
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off_i = (off + nt)
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new_state = indexShortOffAddr happyTable off_i
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-----------------------------------------------------------------------------
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-- Error recovery ((0) is the error token)
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-- parse error if we are in recovery and we fail again
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happyFail (0) tk old_st _ stk@(x `HappyStk` _) =
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let i = (case x of { HappyErrorToken (i) -> i }) in
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-- trace "failing" $
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happyError_ i tk
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{- We don't need state discarding for our restricted implementation of
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"error". In fact, it can cause some bogus parses, so I've disabled it
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for now --SDM
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-- discard a state
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happyFail (0) tk old_st (HappyCons ((action)) (sts))
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(saved_tok `HappyStk` _ `HappyStk` stk) =
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-- trace ("discarding state, depth " ++ show (length stk)) $
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happyDoAction (0) tk action sts ((saved_tok`HappyStk`stk))
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-}
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-- Enter error recovery: generate an error token,
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-- save the old token and carry on.
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happyFail i tk (action) sts stk =
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-- trace "entering error recovery" $
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happyDoAction (0) tk action sts ( (HappyErrorToken (i)) `HappyStk` stk)
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-- Internal happy errors:
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notHappyAtAll :: a
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notHappyAtAll = error "Internal Happy error\n"
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-----------------------------------------------------------------------------
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-- Hack to get the typechecker to accept our action functions
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-----------------------------------------------------------------------------
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-- Seq-ing. If the --strict flag is given, then Happy emits
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-- happySeq = happyDoSeq
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-- otherwise it emits
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-- happySeq = happyDontSeq
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happyDoSeq, happyDontSeq :: a -> b -> b
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happyDoSeq a b = a `seq` b
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happyDontSeq a b = b
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-----------------------------------------------------------------------------
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-- Don't inline any functions from the template. GHC has a nasty habit
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-- of deciding to inline happyGoto everywhere, which increases the size of
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-- the generated parser quite a bit.
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{-# NOINLINE happyDoAction #-}
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{-# NOINLINE happyTable #-}
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{-# NOINLINE happyCheck #-}
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{-# NOINLINE happyActOffsets #-}
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{-# NOINLINE happyGotoOffsets #-}
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{-# NOINLINE happyDefActions #-}
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{-# NOINLINE happyShift #-}
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{-# NOINLINE happySpecReduce_0 #-}
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{-# NOINLINE happySpecReduce_1 #-}
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{-# NOINLINE happySpecReduce_2 #-}
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{-# NOINLINE happySpecReduce_3 #-}
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{-# NOINLINE happyReduce #-}
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{-# NOINLINE happyMonadReduce #-}
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{-# NOINLINE happyGoto #-}
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{-# NOINLINE happyFail #-}
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-- end of Happy Template.
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