open Utils
+(* See also "let id" in [lexer.mll]. *)
+let var_regexp =
+ Str.regexp "\\([a-zA-Z_][a-zA-Z0-9_]*\\)[ \t]*=[ \t]*\\(.*\\)"
+
let usage =
"\
goals: Build software.
- goals [-f Goalfile] ['var = value' ...] ['target' ...]
+ goals [-f Goalfile] ['var=value' ...] ['target' ...]
For detailed help see goals(1).
let main () =
(* Command line arguments. *)
+ let args = ref [] in
+ let directory = ref "." in
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";
+ "-C", Arg.Set_string directory,
+ "directory Change to directory before running";
+ "--directory", Arg.Set_string directory,
+ "directory Change to directory before running";
+ "-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 args = List.rev !args in
+ let directory = !directory in
let filename = !filename in
(* Parse the input file. *)
- let file = Parse.parse_goalfile filename in
-
- Ast.print_file stdout file;
+ let env = Parse.parse_goalfile filename in
- (* Find the target(s) to execute first. *)
- let initial_targets = ref [] in
- (* XXX Parse command line anon args here. XXX *)
+ (* Now we've read the input, change directory. *)
+ Sys.chdir directory;
- (* If no initial target set on the command line, find
- * the first goal in the file.
+ (* 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.
*)
+ let targets = ref [] in
+ let env = ref env in
List.iter (
- function
- | Ast.Goal (name, [], _, _, _) ->
- if !initial_targets = [] then
- initial_targets := Ast.ECall (name, []) :: !initial_targets
- | Ast.Goal (name, _, _, _, _) ->
- if !initial_targets = [] then
- failwithf "%s: first target ā%sā has parameters and so cannot be used as the default target"
- filename name
- | _ -> ()
- ) file;
-
- let initial_targets = List.rev !initial_targets in
- ignore initial_targets
-
-let () = main ()
+ 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
+ env := Ast.Env.add name expr !env
+ )
+ else (
+ (* target *)
+ let expr = Parse.parse_cli_expr arg in
+ targets := expr :: !targets
+ )
+ ) args;
+ let targets = List.rev !targets and env = !env 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
+
+ Ast.print_env stderr env;
+
+ (* Evaluate the target expressions in turn. *)
+ Eval.evaluate_targets env targets
+
+let () =
+ try main ()
+ with
+ Failure msg -> prerr_endline msg; exit 1