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' ...]
-
-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
+ (* Handle the command line. *)
+ let anon_vars, targets = Cmdline.parse () 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;
+ (* Change directory (-C option). *)
+ Sys.chdir (Cmdline.directory ());
- (*let args = List.rev !args in*)
- let filename = !filename in
+ (* Create the initial environment, containing the system environment
+ * and a few other standard strings.
+ *)
+ 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
(* Parse the input file. *)
- let env = Parse.parse_goalfile filename in
+ let env = Parse.parse_goalfile env (Cmdline.input_file ()) in
- (* 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 (
- 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.StringMap.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
+ (* 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 anon_vars in
+
+ (* Parse the target expressions. *)
+ let targets = List.map (Parse.parse_expr "commandline") targets in
(* If no target was set on the command line, use "all ()". *)
let targets =
if targets <> [] then targets
- else [Ast.ECall ("all", [])] in
-
- (*Ast.print_env stdout env;*)
-
- (* Evaluate the target expressions in turn. *)
- Eval.evaluate env targets
-
-let () = main ()
+ else [Ast.ECall (Ast.noloc, "all", [])] in
+
+ if Cmdline.debug_flag () then
+ Ast.print_env stderr env;
+
+ (* Construct the dependency DAG with the root(s) being the targets. *)
+ let dag = Deps.create env targets in
+
+ (* Run the jobs. *)
+ let state = Deps.new_state dag Run.goal_runner Run.exists_runner in
+ let next_job () = Deps.next_job state in
+ let retire_job job = Deps.retire_job state job in
+ let string_of_job job = Deps.string_of_job job in
+ Jobs.run next_job retire_job string_of_job
+
+let () =
+ try main ()
+ with
+ | Failure msg | Sys_error msg ->
+ prerr_endline ("*** error: " ^ msg);
+ exit 1