LEMON parser generator modified to generate Rust code.
Lemon source and SQLite3 grammar were last synced as of July 2024.
%token_destructor
: Code to execute to destroy token data%default_destructor
: Code for the default non-terminal destructor%destructor
: Code which executes whenever this symbol is
popped from the stack during error processinghttps://www.codeproject.com/Articles/1056460/Generating-a-High-Speed-Parser-Part-Lemon https://www.sqlite.org/lemon.html
SQLite lexer and SQLite parser have been ported from C to Rust. The parser generates an AST.
Lexer/Parser:
Lexer and parser have been tested with the following scripts:
TODO:
#line
directiveParseAlloc
/ParseFree
anymore%extra_argument
is not supported.lemon_rust does the same thing
but with an old version of lemon
. And it seems not possible to use yystack
as a stack because items may be access randomly and the top+1
item can be used.
lalrpop would be the perfect alternative but it does not support fallback/streaming (see this issue) and compilation/generation is slow.