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-2.5.0.tbz

sha256=9bc8ae3694dd51bd5742e7aba760bd2878c4b0e5ef9b3d4a7b06f3cd303b611d

sha512=c812c3129b3d85b0c4d7e741d11137dbb4fe2a0aaba3a5968409080b742924ecb506280c19ad83ef6bc910346db96d87780313fa7683c29345edae16ae79c704

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.