A Collection of Isabelle Programming Hacks
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Achim D. Brucker b5f15612a7 Upgrading to Isabelle 2020. 1 mese fa
.ci Port to Isabelle 2019. 1 anno fa
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.gitignore Initial document generation support. 2 anni fa
Assert.thy Port to Isabelle 2019. 1 anno fa
Code_Reflection.thy Initial commit: SML Code Reflection 1 anno fa
Hiding_Type_Variables.thy Port to Isabelle 2019. 1 anno fa
LICENSE Initial commit. 2 anni fa
Nano_JSON.thy Fixed serializer for definitions using equality from Pure. 2 anni fa
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ROOT Initial commit: SML Code Reflection 1 anno fa
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Isabelle Hacks

This project contains small Isabelle “hacks” that provide additional functionality to Isabelle or showcase specific functionality. The individual hacks usually consist out of a single theory file and all documentation is contained in that theory file. The master branch should work with the latest official release of Isabelle (Isabelle 2021, at time of writing), hacks for older versions might be available on a dedicated branch.

List of Isabelle Hacks

  • Assert.thy provides a new top level command assert that provides a simple way for specifying assertions that Isabelle checks while processing a theory.

  • Hiding_Type_Variables.thy provides print a setup for defining default type variables of type constructors. The default type variables can be hidden in output, e.g., ('a, 'b, 'c) foo is shown as (_) foo. This shorthand notation can also be used in input (using a parse translation), which (sometimes) helps to focus on the important parts of complex type declarations.

  • Nano_JSON.thy provides support for a JSON-like data exchange for Isabelle/HOL.

  • Code_Reflection.thy provides a new top-level command for reflecting generated SML code into Isabelle’s ML environment.


Main author: Achim D. Brucker


If not otherwise stated, all hacks are licensed under a 2-clause BSD-style license.

SPDX-License-Identifier: BSD-2-Clause

Master Repository

The master git repository for this project is hosted by the Software Assurance & Security Research Team at https://git.logicalhacking.com/adbrucker/isabelle-hacks.