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26 lines
1.2 KiB
Plaintext
26 lines
1.2 KiB
Plaintext
Parser.test
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: ∀(test: String)
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(Parser Bool)
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= λtest λcode
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// Gets the first expected character.
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let P = λx ∀(code: String) (Parser.Result Bool)
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let cons = λtest.head λtest.tail λcode
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// Gets the first detected character.
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let P = λx (Parser.Result Bool)
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let cons = λcode.head λcode.tail
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// Checks if expected == detected.
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let P = λx ∀(code.head: Char) ∀(code.tail: String) (Parser.Result Bool)
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let true = λcode.head λcode.tail
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// If so, parses the next character and reconstructs the original code.
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let P = λx(Parser.Result Bool)
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let done = λcode λvalue (Parser.Result.done Bool (String.cons code.head code) value)
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let fail = λerror (Parser.Result.fail Bool error)
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(~(Parser.test test.tail code.tail) P done fail)
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let false = λcode.head λcode.tail
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// Otherwise, returns false and reconstructs the original code.
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(Parser.Result.done Bool (String.cons code.head code.tail) Bool.false)
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((~(Char.equal test.head code.head) P true false) code.head code.tail)
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let nil = (Parser.Result.done Bool String.nil Bool.false)
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(~code P cons nil)
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let nil = λcode (Parser.Result.done Bool code Bool.true)
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(~test P cons nil code) |