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pattern matching for "x"*

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krangelov
2021-09-29 14:57:18 +02:00
parent edd7081dea
commit 6efb878c43
11 changed files with 44 additions and 19 deletions
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13
src/compiler/GF/Grammar/Grammar.hs
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@@ -421,8 +421,17 @@ data Patt =
-- regular expression patterns
| PNeg Patt -- ^ negated pattern: -p
| PAlt Patt Patt -- ^ disjunctive pattern: p1 | p2
| PSeq Int Int Patt Int Int Patt -- ^ sequence of token parts: p + q
| PRep Patt -- ^ repetition of token part: p*
| PSeq {-# UNPACK #-} !Int {-# UNPACK #-} !Int Patt {-# UNPACK #-} !Int {-# UNPACK #-} !Int Patt
-- ^ sequence of token parts: p + q
-- In the constructor PSeq minp maxp p minq maxq q,
-- minp/maxp and minq/maxq are the minimal/maximal
-- length of a matching string for p/q.
| PRep {-# UNPACK #-} !Int {-# UNPACK #-} !Int Patt
-- ^ repetition of token part: p*
-- In the constructor PRep minp maxp p,
-- minp/maxp is the minimal/maximal length of
-- a matching string for p.
| PChar -- ^ string of length one: ?
| PChars [Char] -- ^ character list: ["aeiou"]
| PMacro Ident -- #p