tento-lisp

tento-lisp is a small Lisp parser and evaluator used for sheet formula and expression experiments.

Public surface

• Runtime::parse(filename, input, interner) parses source into S-expressions.
• Runtime::eval(filename, input) evaluates a source string and returns values.
• SyntaxResult is re-exported for parser callers.

Boundaries

The crate owns language parsing and evaluation. Host code should not depend on lexer or grammar internals unless those modules are made public intentionally.

Keep host-specific functions, sheet row access, and UI behavior outside this crate. If formulas need runtime bindings, expose them as evaluator inputs or a separate adapter layer instead of importing sheet code into the language core.