open Utils
-(* See also "let id" in [lexer.mll]. *)
-let var_regexp = Str.regexp "\\([a-zA-Z_][a-zA-Z0-9_]*\\)=\\(.*\\)"
-
-let usage =
- "\
-goals: Build software.
-
- goals [-f Goalfile] ['var=value' ...] ['target' ...]
-
-For detailed help see goals(1).
-
-Options:"
+(* See comment in parser.mly. *)
+let () =
+ Parser.lexer_read := Some Lexer.read;
+ Parser.eval_substitute := Some Eval.substitute
let main () =
- (* Command line arguments. *)
- let filename = ref "Goalfile" in
-
- let argspec = [
- "-f", Arg.Set_string filename,
- "filename Set name of Goalfile";
- "--file", Arg.Set_string filename,
- "filename Set name of Goalfile";
- ] in
- let argspec = Arg.align argspec in
- let args = ref [] in
- let anon_fun s = args := s :: !args in
- Arg.parse argspec anon_fun usage;
-
- (*let args = List.rev !args in*)
- let filename = !filename in
-
- (* Parse the input file. *)
- let file = Parse.parse_goalfile filename in
+ (* Change directory (-C option). *)
+ Sys.chdir Cmdline.directory;
- (* Parse the command line anon args. Each parameter has the
- * form "name=<expr>" to assign a value to a variable, or
- * "<expr>" to indicate a target to build.
+ (* Create the initial environment, containing the system environment
+ * and a few other standard strings.
*)
- let assignments = ref [] in
- let targets = ref [] in
- List.iter (
- fun arg ->
- if Str.string_match var_regexp arg 0 then ( (* assignment *)
- let name = Str.matched_group 1 arg in
- let expr = Parse.parse_cli_expr (Str.matched_group 2 arg) in
- assignments := Ast.Let (name, expr) :: !assignments
- )
- else ( (* target *)
- let expr = Parse.parse_cli_expr arg in
- targets := expr :: !targets
- )
- ) !args;
+ let env =
+ Array.fold_left (
+ fun env environ ->
+ let k, v = split "=" environ in
+ Ast.Env.add k (Ast.EConstant (Ast.noloc, Ast.CString v)) env
+ ) Ast.Env.empty (Unix.environment ()) in
+ let env =
+ Ast.Env.add "stdlib"
+ (Ast.EConstant (Ast.noloc, Ast.CString Cmdline.stdlibdir))
+ env in
+ (*let env =
+ if Cmdline.debug_flag then Ast.Env.add "debug" (Ast.EConstant (noloc, Ast.CBool true)) env else env in *)
+
+ (* Parse the prelude. *)
+ let env =
+ if Cmdline.use_prelude then
+ Parse.parse_goalfile env Cmdline.prelude_gl_file
+ else env in
- (* If no target was set on the command line, find
- * the first goal in the file.
- *)
- if !targets = [] then (
- try
- let first_goal =
- List.find (function Ast.Goal _ -> true | _ -> false) file in
- match first_goal with
- | Ast.Goal (name, [], _, _, _) ->
- targets := [Ast.ECall (name, [])]
- | Ast.Goal (name, _, _, _, _) ->
- failwithf "%s: first target ā%sā has parameters and so cannot be used as the default target"
- filename name
- | _ -> assert false
- with
- (* Actually this is fine. If there are no goals we'll do nothing. *)
- Not_found -> ()
- );
-
- let targets = List.rev !targets in
-
- (* Assignments are simply treated as statements added to the end of
- * the file (so they override earlier assignments to the same variable,
- * if any).
- *)
- let file = file @ List.rev !assignments in
-
- (* We start with an empty symbol table. *)
- let vars = Hashtbl.create 13 in
-
- (* Evaluate the target expressions in turn. *)
- Eval.evaluate file vars targets
-
-let () = main ()
+ (* Parse the input file. *)
+ let env = Parse.parse_goalfile env Cmdline.input_file in
+
+ (* Parse the command line assignments. *)
+ let env =
+ List.fold_left (
+ fun env (name, expr) ->
+ let expr = Parse.parse_expr "commandline" expr in
+ Ast.Env.add name expr env
+ ) env Cmdline.anon_vars in
+
+ (* Parse the target expressions. *)
+ let targets = List.map (Parse.parse_expr "commandline") Cmdline.targets in
+
+ (* If no target was set on the command line, use "all ()". *)
+ let targets =
+ if targets <> [] then targets
+ else [Ast.ECall (Ast.noloc, "all", [])] in
+
+ if Cmdline.debug_flag then
+ Ast.print_env stderr env;
+
+ (* Run the target expressions. *)
+ Run.run_targets_to_completion env targets
+
+let () =
+ try main ()
+ with
+ Failure msg | Sys_error msg ->
+ prerr_endline ("error: " ^ msg); exit 1