master > master: grammatik auslagern
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37
code/aussagenlogik/grammar.lark
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37
code/aussagenlogik/grammar.lark
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%import common.WS
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%import common.NUMBER
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%import common.WORD
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%ignore WS
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// Schemata für Ausdrücke
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// 'open' = äußerste Klammern fehlen, wenn nötig.
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// 'closed' = sonst
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?expr: open | closed
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?closed: atomic | not | "(" open ")"
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?open: and | and_long | or | or_long | impl
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// Schemata für atomische Ausdrücke
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?atomic: false | true | atom | generic
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?false: /0|false/ -> kontr
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?true: /1|true/ -> taut
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?atom: /A[0-9]+/ -> atom
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// als 'generischen' Formeln schreibe bspw. {F}, {G}, {F1}, usw.
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?generic: "{" /((?!({|})).)+/ "}" -> beliebig
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// Symbole (erlaube mehrere Varianten)
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?symb_not: /!|~|not/ -> symb
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?symb_and: /&+|\^|and/ -> symb
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?symb_or: /\|+|v|or/ -> symb
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?symb_impl: /->|=>/ -> symb
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// Schema für Negation: ¬ F
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?not: symb_not closed -> neg
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// Schemata für Konjunktion: F1 ⋀ F2 bzw. F1 ⋀ F2 ⋀ ... ⋀ Fn
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?and: closed symb_and closed -> konj
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?and_long: [ closed ( symb_and closed )+ ] -> konj_lang
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// Schemata für Disjunktion: F1 ⋁ F2 bzw. F1 ⋁ F2 ⋁ ... ⋁ Fn
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?or: closed symb_or closed -> disj
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?or_long: [ closed ( symb_or closed )+ ] -> disj_lang
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// Schema für Implikation: F1 ⟶ F2
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?impl: closed symb_impl closed -> impl
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