TSL Tools

A tool set and library for developing and processing Temporal Stream Logic (TSL) specifications and Control Flow Models (CFMs) that result from TSL synthesis.

1. Tool Overview

   1. Analyzing TSL Specifications
   2. Processing TSL Specifications
   3. Generating Control Flow Models
   4. Debugging TSL Specifications

2. Installation

3. Research and Documentation

4. Contributing

Tool Overview

The precise usage and arguments for each tool are describe by <toolname> --help. Note that most tools will try to read some file from STDIN when they get no specific input.

Analyzing TSL Specifications

• tslcheck checks for a set of TSL specification files, whether they are valid or not.
• tslsym prints the symbol table that is derived from a TSL specification. The table identifies all inputs, outputs, function, and predicate symbols, as well as their derived type signatures. Therefore, the tool provides a first overview of specified modules. It is, however, also useful to identify typos in the literals used, since they are automatically introduced by their usage and, thus, do not lead to an error if spelled incorrectly.
• tslsize prints the size of the specification, i.e., the number of AST nodes of the underlying TSL formula. It can be used for comparing a set of TSL benchmarks.

Processing TSL Specifications

• tslresolve resolves TSL specifications with imports into a plain TSL specifications by inlining the imported specifications.
• tslsplit applies a sound specification decomposition technique to the give specification. It assumes unrealizability of the negated assumptions (such that the spec is not realizable by assumption violation). It saves the resulting specs as <filename>_x.tsl in the current path where x is the index of the respective subspecification.
• tsl2tlsf under-approximates a TSL specification by a weaker LTL specification that is given in the TLSF format.
• tsl2toml transforms a TSL file into TOML file of TSL formulas.

Generating Control Flow Models

• cfmcheck checks for a set of CFM files, whether they are valid or not.
• cfmsym prints the symbol table of a CFM, similar to tslsym printing the symbol table for a TSL specification.
• cfminfo prints the number of inputs, outputs, predicates, functions, cells, and vertices of the generated CFM.
• cfm2code generates executable code from a valid CFM. To this end, a specific code target must be selected. Supported targets are:
  • applicative: generates code for Applicative FRP libraries
  • monadic: generates code for Monadic FRP libraries
  • arrow: generates code for Arrowized FRP libraries
  • clash: generates code for the hardware description language CλaSH

Debugging TSL Specifications

• tslplay allows to play against a environment strategy (system strategy) as the system (environment) interactively. tslplay shows why some options are not available to the user according to the respective specification helping to understand why some specification are unrealizable. The strategies are in the form of a CFM.
• tslcoregen generate so called TSL unrealizability cores, i.e. the minimal amount of guarantees of some specification that render it unrealizable.
• tslminrealizable generate so called minimal assumption cores, i.e. the minimal amount of assumptions of some specification that render it realizable.

Installation

We recommend using the Haskell Tool Stack for building. The tool automatically pulls the required version of the Glasgow Haskell Compiler (GHC) and all required dependencies. Note that by using stack, the installation does not interfere with any system installation. After stack is installed just type

make

in the main directory to build TSL tools.

Research and Documentation

• The original paper and its extended version
• The FRP paper 'Synthesizing Functional Reactive Programs'
• A FPGA arcade game specified using TSL, syntroids
• WIP: A tool-paper describing the format and other features of tsltools.

Contributing

If you want to contribute please refer to CONTRIBUTING.