Parser Extensions
Parser extensions implement the parsing step. plcc-ng ships with a single
built-in parser: plcc-parser-table, an LL(1) table-driven parser.
How parser extensions plug in
plcc-trees dispatches to a parser plugin via
the --parser=KIND flag (default: table). It calls plcc-parser-<kind>,
passing the LL(1) analysis JSON and token JSONL on stdin.
Use plcc-parser-list to see what is
installed.
Note: there is no dedicated
plcc-parserdispatch command —plcc-treeshandles dispatch directly.
plcc-parser-table
The default LL(1) table-driven parser. Reads token JSONL from stdin and the
LL(1) analysis JSON from --ll1, emits parse tree JSON to stdout.
| Command | What it does |
|---|---|
plcc-parser-table |
Table-driven LL(1) parse; emits parse tree JSON or error records |
plcc-parser-table also supports --trace, which emits parse-step records
interleaved with the parse tree for debugging.