ANTLR4::Grammar

ANTLR4::Grammar generates a Raku representation of an ANTLR4 AST.

Synopsis

    use ANTLR4::Grammar;
    my $ag = ANTLR4::Grammar.new;

    say $ag.to-string('grammar Minimal { identifier : [A-Z][A-Za-z]+ ; }');
    say $ag.file-to-string('ECMAScript.g4');

Installation

From the ecosystem using zef:

    zef install ANTLR4::Grammar

Documentation

In its simplest form, just use the to-string method on an existing grammar text to get back its closest Raku representation.

Extension

Suppose you don't like how the module formats the ANTLR grammar. Subclass this module and override the to-lines methods I've provided, or go all the way back to the top level and replace the to-lines( Grammar $g ) with your own inheritance hierarchy.

Maybe you want to add a way to create a bare-bones action class to go along with your resulting grammar - override the to-string method, you've got the $grammar value that you can walk through, and do your own thing.

Author

✝ Jeffrey Goff, DrForr on #raku, https://github.com/drforr/

Maintained by the Raku community (2020-2023)

License

Artistic License 2.0