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core: exact string

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This commit is contained in:
Nathan McCarty 2025-01-25 03:21:53 -05:00
parent 994da7065c
commit 59f1eb31d0
1 changed files with 14 additions and 0 deletions
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14
src/Parser/Interface.md
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@ -235,6 +235,20 @@ parseTheseChars cs = do
EndOfInput => throwParseError "End of input"
```
Attempt to parse an exact string
```idris
exactString : String -> Parser String
exactString str with (asList str)
exactString "" | [] = pure ""
exactString input@(strCons c str) | (c :: x) = do
GotChar next <- parseChar (== c) id
| GotError err => throwParseError "Got \{show err} expected \{show c}"
| EndOfInput => throwParseError "End of input"
rest <- exactString str | x
pure input
```
### Composition of boolean functions
```idris