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Drop unreachable cases of updateDepth

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James Eversole 2025-01-21 16:16:04 -06:00 committed by James Eversole
parent 83dad2c56b
commit 3e3e5802fa
2 changed files with 5 additions and 9 deletions
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2
demos/LevelOrderTraversal.tri
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@ -61,7 +61,7 @@ exampleOne = flatLOT [("1")
[("2") [("4") t t] t]
[("3") [("5") t t] [("6") t t]]]
exampleTwo = flatLOT [[("1")
exampleTwo = flatLOT [("1")
[("2") [("4") [("8") t t] [("9") t t]] [("6") [("10") t t] [("12") t t]]]
[("3") [("5") [("11") t t] t] [("7") t t]]]

12
src/Parser.hs
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@ -25,14 +25,10 @@ satisfyM f = do
return token
updateDepth :: LToken -> PState -> PState
updateDepth LOpenParen st = st { parenDepth = parenDepth st + 1 }
updateDepth LCloseParen st
| parenDepth st > 0 = st { parenDepth = parenDepth st - 1 }
| otherwise = errorWithoutStackTrace "Unmatched closing parentheses"
updateDepth LOpenBracket st = st { bracketDepth = bracketDepth st + 1 }
updateDepth LCloseBracket st
| bracketDepth st > 0 = st { bracketDepth = bracketDepth st - 1 }
| otherwise = errorWithoutStackTrace "Unmatched closing bracket"
updateDepth LOpenParen st = st { parenDepth = parenDepth st + 1 }
updateDepth LOpenBracket st = st { bracketDepth = bracketDepth st + 1 }
updateDepth LCloseParen st = st { parenDepth = parenDepth st - 1 }
updateDepth LCloseBracket st = st { bracketDepth = bracketDepth st - 1 }
updateDepth _ st = st
topLevelNewline :: ParserM ()