open Printf
-let parse lexbuf =
- let print_position fp lexbuf =
- let pos = lexbuf.lex_curr_p in
- fprintf fp "%s:%d:%d"
- pos.pos_fname pos.pos_lnum (pos.pos_cnum - pos.pos_bol)
- in
+let print_position fp lexbuf =
+ let pos = lexbuf.lex_curr_p in
+ fprintf fp "%s:%d:%d"
+ pos.pos_fname pos.pos_lnum (pos.pos_cnum - pos.pos_bol)
- try Parser.file Lexer.read lexbuf
+let parse_file env lexbuf =
+ try
+ let env' = Parser.file Lexer.read lexbuf in
+ Ast.Env.merge env env'
with
| SyntaxError msg ->
eprintf "%a: %s\n" print_position lexbuf msg;
eprintf "%a: parse error\n" print_position lexbuf;
exit 1
-let parse_from_file filename =
+let parse_expr lexbuf =
+ try Parser.expr Lexer.read lexbuf
+ with
+ | SyntaxError msg ->
+ eprintf "%a: %s\n" print_position lexbuf msg;
+ exit 1
+ | Parser.Error ->
+ eprintf "%a: parse error\n" print_position lexbuf;
+ exit 1
+
+(* This is used to parse the Goalfile. *)
+let parse_goalfile env filename =
+ Cmdline.debug "parse file: %s" filename;
let fp = open_in filename in
- let lexbuf = Lexing.from_channel fp in
- lexbuf.lex_curr_p <- { lexbuf.lex_curr_p with pos_fname = filename };
- let file : Ast.file = parse lexbuf in
+ let lexbuf = Lexing.from_channel ~with_positions:true fp in
+ let pos = lexbuf.lex_curr_p in
+ lexbuf.lex_curr_p <- { pos with pos_fname = filename };
+ let env' = parse_file env lexbuf in
close_in fp;
- file
+ env'
+
+(* This is used to parse expressions on the command line and
+ * the output from functions.
+ *)
+let parse_expr source str =
+ Cmdline.debug "parse expression: %S" str;
+ let lexbuf = Lexing.from_string ~with_positions:true str in
+ let pos = lexbuf.lex_curr_p in
+ lexbuf.lex_curr_p <- { pos with pos_fname = source };
+ parse_expr lexbuf