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35 lines
1.1 KiB
OCaml
35 lines
1.1 KiB
OCaml
(*===----------------------------------------------------------------------===
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* Top-Level parsing and JIT Driver
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*===----------------------------------------------------------------------===*)
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(* top ::= definition | external | expression | ';' *)
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let rec main_loop stream =
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match Stream.peek stream with
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| None -> ()
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(* ignore top-level semicolons. *)
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| Some (Token.Kwd ';') ->
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Stream.junk stream;
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main_loop stream
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| Some token ->
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begin
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try match token with
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| Token.Def ->
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ignore(Parser.parse_definition stream);
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print_endline "parsed a function definition.";
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| Token.Extern ->
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ignore(Parser.parse_extern stream);
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print_endline "parsed an extern.";
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| _ ->
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(* Evaluate a top-level expression into an anonymous function. *)
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ignore(Parser.parse_toplevel stream);
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print_endline "parsed a top-level expr";
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with Stream.Error s ->
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(* Skip token for error recovery. *)
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Stream.junk stream;
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print_endline s;
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end;
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print_string "ready> "; flush stdout;
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main_loop stream
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