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https://github.com/tlaplus/communitymodules

TLA+ snippets, operators, and modules contributed and curated by the TLA+ community
https://github.com/tlaplus/communitymodules
pluscal tla-specification tlaplus
Last synced: about 1 month ago
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TLA+ snippets, operators, and modules contributed and curated by the TLA+ community
Host: GitHub
URL: https://github.com/tlaplus/communitymodules
Owner: tlaplus
License: mit
Created: 2019-05-22T04:37:23.000Z (over 5 years ago)
Default Branch: master
Last Pushed: 2024-09-18T19:25:48.000Z (3 months ago)
Last Synced: 2024-10-30T05:26:24.480Z (about 2 months ago)
Topics: pluscal, tla-specification, tlaplus
Language: TLA
Homepage:
Size: 6.4 MB
Stars: 269
Watchers: 15
Forks: 36
Open Issues: 17
Metadata Files:
- Readme: README.md
- License: LICENSE
- Citation: CITATION.cff
Awesome Lists containing this project

README

        Community Repository

====================

[This is an open repository](https://github.com/tlaplus/CommunityModules/) dedicated to **contributions from the TLA+ community**.

Here you can submit the snippets, operators, and modules that you wrote for your specifications and that you want to share with the rest of the TLA+ community.

(For us to gauge demand, please star (`eyes up and right`) this repository if you use the CommunityModules.)

The Modules

-----------

| Name  | Short description | Module Override? | Contributors |

| ---: | ---- | :--: | ---- |

| [`BagsExt.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/BagsExt.tla) | Additional operators on bags (e.g. `BagAdd`, `BagRemove`, `FoldBag`, etc.) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/BagsExt.java) | [@muenchnerkindl](https://github.com/muenchnerkindl), [@lemmy](https://github.com/lemmy) |

| [`Bitwise.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Bitwise.tla) | Bitwise And and shift-right. | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/Bitwise.java) | [@lemmy](https://github.com/lemmy), [@pfeodrippe](https://github.com/pfeodrippe) |

| [`Combinatorics.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Combinatorics.tla) | Binomial coefficient (N choose K) and factorial operator | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/Combinatorics.java) | [@lemmy](https://github.com/lemmy) |

| [`CSV.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/CSV.tla) | Operations on CSV files  | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/CSV.java) | [@lemmy](https://github.com/lemmy) |

| [`DifferentialEquations.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/DifferentialEquations.tla) | see page 178 of [Specifying Systems](https://lamport.azurewebsites.net/tla/book-02-08-08.pdf) | | Leslie Lamport |

| [`DyadicRationals.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/DyadicRationals.tla) | Operations on [dyadic rational numbers](https://en.wikipedia.org/wiki/Dyadic_rational) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/DyadicRationals.java) | [@lemmy](https://github.com/lemmy) |

| [`FiniteSetsExt.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/FiniteSetsExt.tla) | Additional operators on finite sets (e.g. `FoldSet`, `Min`, `Max`, `Quantify`, etc.) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/FiniteSetsExt.java) | [@hwayne](https://github.com/hwayne), [@lemmy](https://github.com/lemmy), [@quicquid](https://github.com/quicquid), [@mryndzionek](https://github.com/mryndzionek), [@will62794](https://github.com/will62794), [@konnov](https://github.com/konnov) |

| [`Folds.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Folds.tla) | Basic Fold operator (`MapThenFoldSet`). | | [@quicquid](https://github.com/quicquid), [@muenchnerkindl](https://github.com/muenchnerkindl), [@konnov](https://github.com/konnov) |

| [`Functions.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Functions.tla) | Notions about functions (range, anti-function, injection, surjection, bijection) and folds (`FoldFunction`, `FoldFunctionOnSet`). | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/Functions.java) | Thomas L. Rodeheffer, [@muenchnerkindl](https://github.com/muenchnerkindl), [@quicquid](https://github.com/quicquid), [@lemmy](https://github.com/lemmy) |

| [`Graphs.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Graphs.tla) | Common operators on directed and undirected graphs | | Leslie Lamport, [@lemmy](https://github.com/lemmy), [@muenchnerkindl](https://github.com/muenchnerkindl) |

| [`GraphViz.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/GraphViz.tla) | Generate GraphViz file through TLC | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/GraphViz.java) | [@lemmy](https://github.com/lemmy) |

| [`HTML.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/HTML.tla) | Format strings into HTML tags |  | [@afonsof](https://github.com/afonsof) |

| [`IOUtils.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/IOUtils.tla) | Input/Output of TLA+ values & Spawn system commands from a spec. | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/IOUtils.java) | [@lemmy](https://github.com/lemmy), [@lvanengelen](https://github.com/lvanengelen), [@afonsof](https://github.com/afonsof) |

| [`Json.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Json.tla) | JSON serialization and deserialization into TLA+ values. | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/Json.java) | [@kuujo](https://github.com/kuujo), [@lemmy](https://github.com/lemmy), [@jobvs](https://github.com/jobvs), [@pfeodrippe](https://github.com/pfeodrippe) |

| [`Relation.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Relation.tla) | Basic operations on relations, represented as binary Boolean functions over some set S. | | [@muenchnerkindl](https://github.com/muenchnerkindl), [@lemmy](https://github.com/lemmy) |

| [`SequencesExt.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/SequencesExt.tla) | Additional operators on sequences (e.g. `ToSet`, `Reverse`, `ReplaceAll`, `SelectInSeq`, etc.) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/SequencesExt.java) | [@muenchnerkindl](https://github.com/muenchnerkindl), [@lemmy](https://github.com/lemmy), [@hwayne](https://github.com/hwayne), [@quicquid](https://github.com/quicquid), [@konnov](https://github.com/konnov), [@afonsof](https://github.com/afonsof) |

| [`ShiViz.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/ShiViz.tla) | Visualize error-traces of multi-process PlusCal algorithms with an [Interactive Communication Graphs](https://bestchai.bitbucket.io/shiviz/). |  | [@lemmy](https://github.com/lemmy) |

| [`Statistics.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/Statistics.tla) | Statistics operators (`ChiSquare`, etc.) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/Statistics.java) | [@lemmy](https://github.com/lemmy) |

| [`SVG.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/SVG.tla) | see [will62794/tlaplus_animation](https://github.com/will62794/tlaplus_animation) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/SVG.java) | [@will62794](https://github.com/will62794), [@lemmy](https://github.com/lemmy) |

| [`TLCExt.tla`](https://github.com/tlaplus/tlaplus/blob/master/tlatools/org.lamport.tlatools/src/tla2sany/StandardModules/TLCExt.tla) | Assertion operators and experimental TLC features (now part of TLC). | [✔](https://github.com/tlaplus/tlaplus/blob/master/tlatools/org.lamport.tlatools/src/tlc2/module/TLCExt.java) | [@lemmy](https://github.com/lemmy), [@will62794](https://github.com/will62794) |

| [`VectorClocks.tla`](https://github.com/tlaplus/CommunityModules/blob/master/modules/VectorClocks.tla) | Causal order operations on vector clocks (e.g. `CausalOrder`, `IsCausalOrder`) | [✔](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/VectorClocks.java) | [@lemmy](https://github.com/lemmy) |

How to use it

-------------

You must be running [Java 9 or higher](https://github.com/tlaplus/CommunityModules/issues/34#issuecomment-756571840).

Just copy & paste the snippet, the operators, or the set of modules you are interested in.

Alternatively, clone this repository and pass ```-DTLA-Library=/path/to/CommunityModules/modules``` when running TLC.

Another option is to download a [library archive](https://github.com/tlaplus/CommunityModules/releases) and add it to TLC's or the Toolbox's *TLA+ library path*. The advantage of doing this is that TLC will evaluate an operator faster if the operator comes with a Java implementation (see e.g. [SequencesExt.Java](https://github.com/tlaplus/CommunityModules/blob/master/modules/tlc2/overrides/SequencesExt.java)). The latest release is at the stable URL https://github.com/tlaplus/CommunityModules/releases/latest/download/CommunityModules-deps.jar.

If you are using the Toolbox, add the library archive under `File > Preferences > TLA+ Preferences > TLA+ library path locations`.

[![Screencast how to install the CommunityModules into the TLA+ Toolbox](https://img.youtube.com/vi/w9t6JnmxV2E/0.jpg)](https://www.youtube.com/watch?v=w9t6JnmxV2E)

If you are using the [VS Code extension](https://github.com/tlaplus/vscode-tlaplus), a recent version of the community modules is bundled with the nightly build. If you are not using the nightly build or need to use another version, see [this](https://github.com/tlaplus/vscode-tlaplus/issues/249).

If you are running TLC via tla2tools.jar, ensure the JAR is on the *classpath*: either place it next to tla2tools.jar or add it explicitly with `java -cp tla2tools.jar:CommunityModules-deps.jar ...`.

Being a community-driven repository puts the community in charge of checking the validity and correctness of submissions. The maintainers of this repository will try to keep this place in order. Still, we can't guarantee the quality of the modules and, therefore, cannot provide any assistance on eventual malfunctions.

Contributing

------------

If you have one or more snippets, operators, or modules you'd like to share, please open an issue or create

a pull request.  Before submitting your operator or module, please consider adding documentation.  The more documentation there is, the more likely it is that someone will find it useful.

If you change an existing module and tests start failing, check all tests that assert (usually `AssertError` operator) specific error messages, i.e., line numbers and module names.

Note that even an unrelated change further up in the file might have changed the line number and could lead to a failing test case.

Test

------------

Run

``` shell

ant test

```

Download

--------

![CI](https://github.com/tlaplus/CommunityModules/workflows/CI/badge.svg)