package lambdapi

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Proof assistant for the λΠ-calculus modulo rewriting

Install

Dune Dependency

github.com Readme Changelog Edit opam file Versions (11)

Authors

D

Deducteam

Maintainers

D

dedukti-dev@inria.fr

Sources

lambdapi-2.5.1.tbz

sha256=2c251021b6fac40c05282ca183902da5b1008e69d9179d7a9543905c2c21a28a

sha512=69535f92766e6fedc2675fc214f0fb699bde2a06aa91d338c93c99756235a293cf16776f6328973dda07cf2ad402e58fe3104a08f1a896990c1778b42f7f9fcf

doc/lambdapi.tool/Tool/External/index.html

Module `Tool.External`Source

Provides a function for calling external checkers using a Unix command.

Sourceval log_xtrn : 'a Lplib.Base.outfmt -> 'a

Source

val run : 
  string ->
  Core.Sign.t Lplib.Base.pp ->
  string ->
  Core.Sign.t ->
  bool option

run prop pp cmd sign runs the external checker given by the Unix command cmd on the signature sign. The signature is processed and written to a Unix pipe using the formatter pp, and the produced output is fed to the command on its standard output. The return value is Some true in case of a successful check, Some false in the case of a failed check, and None if the external tool cannot conclude. Note that the command cmd should write either "YES", "NO" or "MAYBE" as its first line of (standard) output. The exception Fatal may be raised if cmd exhibits a different behavior. The name prop is used to refer to the checked property when an error message is displayed.

NOTE that for any given property being checked, the simplest possible valid command is "echo MAYBE". Moreover, "cat > file; echo MAYBE" can conveniently be used to write generated data to the file "file". This is useful for debugging purposes.