32 lines
806 B
OCaml
32 lines
806 B
OCaml
open Lexing
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open Ast
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let err msg pos =
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Printf.eprintf
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"Error on line %d col %d: %s.\n"
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pos.pos_lnum
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(pos.pos_cnum - pos.pos_bol)
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msg;
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exit 1
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;;
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let () =
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if Array.length Sys.argv != 2
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then (
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Printf.eprintf "Usage: %s <file>\n" Sys.argv.(0);
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exit 1);
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let f = open_in Sys.argv.(1) in
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let buf = Lexing.from_channel f in
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try
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let parsed = Parser.prog Lexer.token buf in
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close_in f;
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let ast = Semantics.analyze parsed in
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(* Semantics.emit Stdlib.stderr ast; *)
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let asm = Compiler.compile ast in
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Mips.emit Stdlib.stdout asm
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with
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| Lexer.Error c ->
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err (Printf.sprintf "Unrecognized char \"%c\"" c) (Lexing.lexeme_start_p buf)
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| Parser.Error -> err "Syntax error" (Lexing.lexeme_start_p buf)
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| Semantics.Error (msg, pos) -> err msg pos
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;;
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