package pratter

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package pratter
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Module PratterSource

This modules defines a functor whose image is a parser for terms with applications, binary and unary operators. These terms are specified in the argument of the functor.

The algorithm implemented is an extension of the Pratt parser. The Sunting Yard algorithm could also be used.

Sourcetype associativity =
  1. | Left
    (*

    If + is a left associative operator, x + y + z is parsed (x + y) + z.

    *)
  2. | Right
    (*

    If + is a right associative operator, x + y + z is parsed x + (y + z).

    *)

Associativity of an operator.

Sourcetype priority = float

Priority of operators. If * has a higher priority than +, than x + y * z is parsed x + (y * z).

Sourcemodule type SUPPORT = sig ... end

Types and utilities on terms that are to be Pratt parsed.

Sourcemodule Make (Sup : SUPPORT) : sig ... end