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xegaBNF  

Compile a Backus-Naur Form Specification into an R Grammar Object
View on CRAN: Click here


Download and install xegaBNF package within the R console
Install from CRAN:
install.packages("xegaBNF")

Install from Github:
library("remotes")
install_github("cran/xegaBNF")

Install by package version:
library("remotes")
install_version("xegaBNF", "1.0.0.0")



Attach the package and use:
library("xegaBNF")
Maintained by
Andreas Geyer-Schulz
[Scholar Profile | Author Map]
First Published: 2024-02-05
Latest Update: 2024-02-05
Description:
Translates a BNF (Backus-Naur Form) specification of a context-free language into an R grammar object which consists of the start symbol, the symbol table, the production table, and a short production table. The short production table is non-recursive. The grammar object contains the file name from which it was generated (without a path). In addition, it provides functions to determine the type of a symbol (isTerminal() and isNonterminal()) and functions to access the production table (rules() and derives()). For the BNF specification, see Backus, John et al. (1962) "Revised Report on the Algorithmic Language ALGOL 60". (ALGOL60 standards page <http://www.algol60.org/2standards.htm>, html-edition <https://www.masswerk.at/algol60/report.htm>) The grammar compiler is based on the APL2 implementation in Geyer-Schulz, Andreas (1997, ISBN:978-3-7908-0830-X).
How to cite:
Andreas Geyer-Schulz (2024). xegaBNF: Compile a Backus-Naur Form Specification into an R Grammar Object. R package version 1.0.0.0, https://cran.r-project.org/web/packages/xegaBNF. Accessed 15 Feb. 2025.
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