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LambdaTerm
= Abstraction
/ Application
/ Variable
Application
= LPAREN _? left:LambdaTerm _? right:LambdaTerm _? RPAREN {
return { left, right };
}
Abstraction
= LPAREN _? LAMBDA _? param:Variable _? DOT _? body:LambdaTerm _? RPAREN {
return { param, body };
}
Variable
= name:([a-zA-Z][A-Z0-9a-z]*) { return { name: name[0] + name[1].join('') }; }
LAMBDA = "λ"
DOT = "."
LPAREN = "("
RPAREN = ")"
_ = (" " / "\n" / "\t" / "\t\n")+
|
