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Added builtin special forms, lambda forms and bind-symbol. got rid of bind-function, as it is now unnecessary. it is now possible to create functions!

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Emin Arslan
2025-10-14 21:05:10 +03:00
committed by Emin Arslan
parent 22e7c3dbb3
commit b0ded579af
3 changed files with 35 additions and 12 deletions
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5
lib/ast.ml
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@@ -11,8 +11,10 @@ type lisp_val =
generally, builtin functions should handle their arguments directly,
and eval forms in the environment as necessary. *)
| LBuiltinFunction of string * (environment -> lisp_val -> lisp_val)
| LBuiltinSpecial of string * (environment -> lisp_val -> lisp_val)
(* a function is a name, captured environment, a parameter list, and function body. *)
| LFunction of string * environment * lisp_val * lisp_val
| LLambda of environment * lisp_val * lisp_val
(* a macro is exactly the same as a function, with the distinction
that it receives all of its arguments completely unevaluated
in a compiled lisp this would probably make more of a difference *)
@@ -51,7 +53,10 @@ let rec dbg_print_one v =
| LNil -> pf "()"
| LCons (a, b) -> pf "(%s . %s)" (dbg_print_one a) (dbg_print_one b)
| LDouble d -> pf "<double: %f>" d
| LBuiltinSpecial (name, _)
| LBuiltinFunction (name, _) -> pf "<builtin: %s>" name
| LLambda (_, args, _) -> pf "<unnamed function, lambda-list: %s>"
(dbg_print_one args)
| LFunction (name, _, args, _) -> pf "<function: '%s' lambda-list: %s>"
name (dbg_print_one args)
| LMacro (name, _, args, _) -> pf "<function '%s' lambda-list: %s>"