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Diffstat (limited to 'otherlibs/labltk/browser/searchpos.ml')
| -rw-r--r-- | otherlibs/labltk/browser/searchpos.ml | 760 |
1 files changed, 760 insertions, 0 deletions
diff --git a/otherlibs/labltk/browser/searchpos.ml b/otherlibs/labltk/browser/searchpos.ml new file mode 100644 index 000000000..9883ea50c --- /dev/null +++ b/otherlibs/labltk/browser/searchpos.ml @@ -0,0 +1,760 @@ +(* $Id$ *) + +open Tk +open Jg_tk +open Parsetree +open Types +open Typedtree +open Location +open Longident +open Path +open Env +open Searchid + +(* auxiliary functions *) + +let lines_to_chars n in:s = + let l = String.length s in + let rec ltc n :pos = + if n = 1 or pos >= l then pos else + if s.[pos] = '\n' then ltc (n-1) pos:(pos+1) else ltc n pos:(pos+1) + in ltc n pos:0 + +let in_loc loc :pos = + pos >= loc.loc_start & pos < loc.loc_end + +let rec string_of_longident = function + Lident s -> s + | Ldot (id,s) -> string_of_longident id ^ "." ^ s + | Lapply (id1, id2) -> + string_of_longident id1 ^ "(" ^ string_of_longident id2 ^ ")" + +let string_of_path p = string_of_longident (Searchid.longident_of_path p) + +let parent_path = function + Pdot (path, _, _) -> Some path + | Pident _ | Papply _ -> None + +let ident_of_path :default = function + Pident i -> i + | Pdot (_, s, _) -> Ident.create s + | Papply _ -> Ident.create default + +let rec head_id = function + Pident id -> id + | Pdot (path,_,_) -> head_id path + | Papply (path,_) -> head_id path (* wrong, but ... *) + +let rec list_of_path = function + Pident id -> [Ident.name id] + | Pdot (path, s, _) -> list_of_path path @ [s] + | Papply (path, _) -> list_of_path path (* wrong, but ... *) + +(* a standard (diposable) buffer class *) + +class buffer :len = object + val mutable buffer = String.create :len + val mutable length = len + val mutable current = 0 + method out buffer:b :pos :len = + while len + current > length do + let newbuf = String.create len:(length * 2) in + String.blit buffer pos:0 len:current to:newbuf to_pos:0; + buffer <- newbuf; + length <- 2 * length + done; + String.blit b :pos to:buffer to_pos:current :len; + current <- current + len + method get = String.sub buffer pos:0 len:current +end + +(* Search in a signature *) + +type skind = [`Type|`Class|`Module|`Modtype] + +exception Found_sig of skind * Longident.t * Env.t + +let rec search_pos_type t :pos :env = + if in_loc :pos t.ptyp_loc then + begin (match t.ptyp_desc with + Ptyp_any + | Ptyp_var _ -> () + | Ptyp_variant(tl, _, _) -> + List.iter tl + fun:(fun (_,_,tl) -> List.iter tl fun:(search_pos_type :pos :env)) + | Ptyp_arrow (_, t1, t2) -> + search_pos_type t1 :pos :env; + search_pos_type t2 :pos :env + | Ptyp_tuple tl -> + List.iter tl fun:(search_pos_type :pos :env) + | Ptyp_constr (lid, tl) -> + List.iter tl fun:(search_pos_type :pos :env); + raise (Found_sig (`Type, lid, env)) + | Ptyp_object fl -> + List.iter fl fun: + begin function + | {pfield_desc = Pfield (_, ty)} -> search_pos_type ty :pos :env + | _ -> () + end + | Ptyp_class (lid, tl, _) -> + List.iter tl fun:(search_pos_type :pos :env); + raise (Found_sig (`Type, lid, env)) + | Ptyp_alias (t, _) -> search_pos_type :pos :env t); + raise Not_found + end + +let rec search_pos_class_type cl :pos :env = + if in_loc cl.pcty_loc :pos then begin + begin match cl.pcty_desc with + Pcty_constr (lid, _) -> + raise (Found_sig (`Class, lid, env)) + | Pcty_signature (_, cfl) -> + List.iter cfl fun: + begin function + Pctf_inher cty -> search_pos_class_type cty :pos :env + | Pctf_val (_, _, Some ty, loc) -> + if in_loc loc :pos then search_pos_type ty :pos :env + | Pctf_val _ -> () + | Pctf_virt (_, _, ty, loc) -> + if in_loc loc :pos then search_pos_type ty :pos :env + | Pctf_meth (_, _, ty, loc) -> + if in_loc loc :pos then search_pos_type ty :pos :env + | Pctf_cstr (ty1, ty2, loc) -> + if in_loc loc :pos then begin + search_pos_type ty1 :pos :env; + search_pos_type ty2 :pos :env + end + end + | Pcty_fun (_, ty, cty) -> + search_pos_type ty :pos :env; + search_pos_class_type cty :pos :env + end; + raise Not_found + end + +let search_pos_type_decl td :pos :env = + if in_loc :pos td.ptype_loc then begin + begin match td.ptype_manifest with + Some t -> search_pos_type t :pos :env + | None -> () + end; + begin match td.ptype_kind with + Ptype_abstract -> () + | Ptype_variant dl -> + List.iter dl + fun:(fun (_, tl) -> List.iter tl fun:(search_pos_type :pos :env)) + | Ptype_record dl -> + List.iter dl fun:(fun (_, _, t) -> search_pos_type t :pos :env) + end; + raise Not_found + end + +let rec search_pos_signature l :pos :env = + List.fold_left l acc:env fun: + begin fun acc:env pt -> + let env = match pt.psig_desc with + Psig_open id -> + let path, mt = lookup_module id env in + begin match mt with + Tmty_signature sign -> open_signature path sign env + | _ -> env + end + | sign_item -> + try add_signature (Typemod.transl_signature env [pt]) env + with Typemod.Error _ | Typeclass.Error _ + | Typetexp.Error _ | Typedecl.Error _ -> env + in + if in_loc :pos pt.psig_loc then begin + begin match pt.psig_desc with + Psig_value (_, desc) -> search_pos_type desc.pval_type :pos :env + | Psig_type l -> + List.iter l fun:(fun (_,desc) -> search_pos_type_decl :pos desc :env) + | Psig_exception (_, l) -> + List.iter l fun:(search_pos_type :pos :env); + raise (Found_sig (`Type, Lident "exn", env)) + | Psig_module (_, t) -> + search_pos_module t :pos :env + | Psig_modtype (_, Pmodtype_manifest t) -> + search_pos_module t :pos :env + | Psig_modtype _ -> () + | Psig_class l -> + List.iter l + fun:(fun ci -> search_pos_class_type ci.pci_expr :pos :env) + | Psig_class_type l -> + List.iter l + fun:(fun ci -> search_pos_class_type ci.pci_expr :pos :env) + (* The last cases should not happen in generated interfaces *) + | Psig_open lid -> raise (Found_sig (`Module, lid, env)) + | Psig_include t -> search_pos_module t :pos :env + end; + raise Not_found + end; + env + end + +and search_pos_module m :pos :env = + if in_loc m.pmty_loc :pos then begin + begin match m.pmty_desc with + Pmty_ident lid -> raise (Found_sig (`Modtype, lid, env)) + | Pmty_signature sg -> let _ = search_pos_signature sg :pos :env in () + | Pmty_functor (_ , m1, m2) -> + search_pos_module m1 :pos :env; + search_pos_module m2 :pos :env + | Pmty_with (m, l) -> + search_pos_module m :pos :env; + List.iter l fun: + begin function + _, Pwith_type t -> search_pos_type_decl t :pos :env + | _ -> () + end + end; + raise Not_found + end + +(* the module display machinery *) + +type module_widgets = + { mw_frame: Widget.frame Widget.widget; + mw_detach: Widget.button Widget.widget; + mw_edit: Widget.button Widget.widget; + mw_intf: Widget.button Widget.widget } + +let shown_modules = Hashtbl.create 17 +let filter_modules () = + Hashtbl.iter shown_modules fun: + begin fun :key :data -> + if not (Winfo.exists data.mw_frame) then + Hashtbl.remove :key shown_modules + end +let add_shown_module path :widgets = + Hashtbl.add shown_modules key:path data:widgets +and find_shown_module path = + filter_modules (); + Hashtbl.find shown_modules key:path + +(* Viewing a signature *) + +(* Forward definitions of Viewer.view_defined and Editor.editor *) +let view_defined_ref = ref (fun lid :env -> ()) +let editor_ref = ref (fun ?:file ?:pos ?:opendialog () -> ()) + +let edit_source :file :path :sign = + match sign with + [item] -> + let id, kind = + match item with + Tsig_value (id, _) -> id, Pvalue + | Tsig_type (id, _) -> id, Ptype + | Tsig_exception (id, _) -> id, Pconstructor + | Tsig_module (id, _) -> id, Pmodule + | Tsig_modtype (id, _) -> id, Pmodtype + | Tsig_class (id, _) -> id, Pclass + | Tsig_cltype (id, _) -> id, Pcltype + in + let prefix = List.tl (list_of_path path) and name = Ident.name id in + let pos = + try + let chan = open_in file in + if Filename.check_suffix file suff:".ml" then + let parsed = Parse.implementation (Lexing.from_channel chan) in + close_in chan; + Searchid.search_structure parsed :name :kind :prefix + else + let parsed = Parse.interface (Lexing.from_channel chan) in + close_in chan; + Searchid.search_signature parsed :name :kind :prefix + with _ -> 0 + in !editor_ref :file :pos () + | _ -> !editor_ref :file () + +(* List of windows to destroy by Close All *) +let top_widgets = ref [] + +let rec view_signature ?:title ?:path ?:env{= !start_env} sign = + let env = + match path with None -> env + | Some path -> Env.open_signature path sign env in + let title = + match title, path with Some title, _ -> title + | None, Some path -> string_of_path path + | None, None -> "Signature" + in + let tl, tw, finish = + try match path with + None -> raise Not_found + | Some path -> + let widgets = + try find_shown_module path + with Not_found -> + view_module path :env; + find_shown_module path + in + Button.configure widgets.mw_detach + command:(fun () -> view_signature sign :title :env); + pack [widgets.mw_detach] side:`Left; + Pack.forget [widgets.mw_edit; widgets.mw_intf]; + List.iter2 [widgets.mw_edit; widgets.mw_intf] [".ml"; ".mli"] fun: + begin fun button ext -> + try + let id = head_id path in + let file = + Misc.find_in_path !Config.load_path + (String.uncapitalize (Ident.name id) ^ ext) in + Button.configure button + command:(fun () -> edit_source :file :path :sign); + pack [button] side:`Left + with Not_found -> () + end; + let top = Winfo.toplevel widgets.mw_frame in + if not (Winfo.ismapped top) then Wm.deiconify top; + Focus.set top; + List.iter fun:destroy (Winfo.children widgets.mw_frame); + Jg_message.formatted :title on:widgets.mw_frame maxheight:15 () + with Not_found -> + let tl, tw, finish = Jg_message.formatted :title maxheight:15 () in + top_widgets := tl :: !top_widgets; + tl, tw, finish + in + Format.set_max_boxes 100; + Printtyp.signature sign; + finish (); + Lexical.init_tags tw; + Lexical.tag tw; + Text.configure tw state:`Disabled; + let text = Jg_text.get_all tw in + let pt = + try Parse.interface (Lexing.from_string text) + with Syntaxerr.Error e -> + let l = + match e with + Syntaxerr.Unclosed(l,_,_,_) -> l + | Syntaxerr.Other l -> l + in + Jg_text.tag_and_see tw start:(tpos l.loc_start) + end:(tpos l.loc_end) tag:"error"; [] + | Lexer.Error (_, s, e) -> + Jg_text.tag_and_see tw start:(tpos s) end:(tpos e) tag:"error"; [] + in + Jg_bind.enter_focus tw; + bind tw events:[[`Control], `KeyPressDetail"s"] + action:(`Set ([], fun _ -> Jg_text.search_string tw)); + bind tw events:[[`Double], `ButtonPressDetail 1] + action:(`Setbreakable ([`MouseX;`MouseY], fun ev -> + let `Linechar (l, c) = + Text.index tw index:(`Atxy(ev.ev_MouseX,ev.ev_MouseY), []) in + try try + search_pos_signature pt pos:(lines_to_chars l in:text + c) :env; + break () + with Found_sig (kind, lid, env) -> view_decl lid :kind :env + with Not_found | Env.Error _ -> ())); + bind tw events:[[], `ButtonPressDetail 3] + action:(`Setbreakable ([`MouseX;`MouseY], fun ev -> + let x = ev.ev_MouseX and y = ev.ev_MouseY in + let `Linechar (l, c) = + Text.index tw index:(`Atxy(x,y), []) in + try try + search_pos_signature pt pos:(lines_to_chars l in:text + c) :env; + break () + with Found_sig (kind, lid, env) -> + let menu = view_decl_menu lid :kind :env parent:tw in + let x = x + Winfo.rootx tw and y = y + Winfo.rooty tw - 10 in + Menu.popup menu :x :y + with Not_found -> ())) + +and view_signature_item sign :path :env = + view_signature sign title:(string_of_path path) ?path:(parent_path path) :env + +and view_module path :env = + match find_module path env with + Tmty_signature sign -> + !view_defined_ref (Searchid.longident_of_path path) :env + | modtype -> + let id = ident_of_path path default:"M" in + view_signature_item [Tsig_module (id, modtype)] :path :env + +and view_module_id id :env = + let path, _ = lookup_module id env in + view_module path :env + +and view_type_decl path :env = + let td = find_type path env in + try match td.type_manifest with None -> raise Not_found + | Some ty -> match Ctype.repr ty with + {desc = Tobject _} -> + let clt = find_cltype path env in + view_signature_item :path :env + [Tsig_cltype(ident_of_path path default:"ct", clt)] + | _ -> raise Not_found + with Not_found -> + view_signature_item :path :env + [Tsig_type(ident_of_path path default:"t", td)] + +and view_type_id li :env = + let path, decl = lookup_type li env in + view_type_decl path :env + +and view_class_id li :env = + let path, cl = lookup_class li env in + view_signature_item :path :env + [Tsig_class(ident_of_path path default:"c", cl)] + +and view_cltype_id li :env = + let path, clt = lookup_cltype li env in + view_signature_item :path :env + [Tsig_cltype(ident_of_path path default:"ct", clt)] + +and view_modtype_id li :env = + let path, td = lookup_modtype li env in + view_signature_item :path :env + [Tsig_modtype(ident_of_path path default:"S", td)] + +and view_expr_type ?:title ?:path ?:env ?:name{="noname"} t = + let title = + match title, path with Some title, _ -> title + | None, Some path -> string_of_path path + | None, None -> "Expression type" + and path, id = + match path with None -> None, Ident.create name + | Some path -> parent_path path, ident_of_path path default:name + in + view_signature :title ?:path ?:env + [Tsig_value (id, {val_type = t; val_kind = Val_reg})] + +and view_decl lid :kind :env = + match kind with + `Type -> view_type_id lid :env + | `Class -> view_class_id lid :env + | `Module -> view_module_id lid :env + | `Modtype -> view_modtype_id lid :env + +and view_decl_menu lid :kind :env :parent = + let path, kname = + try match kind with + `Type -> fst (lookup_type lid env), "Type" + | `Class -> fst (lookup_class lid env), "Class" + | `Module -> fst (lookup_module lid env), "Module" + | `Modtype -> fst (lookup_modtype lid env), "Module type" + with Env.Error _ -> raise Not_found + in + let menu = Menu.create :parent tearoff:false () in + let label = kname ^ " " ^ string_of_path path in + begin match path with + Pident _ -> + Menu.add_command menu :label state:`Disabled + | _ -> + Menu.add_command menu :label + command:(fun () -> view_decl lid :kind :env); + end; + if kind = `Type or kind = `Modtype then begin + let buf = new buffer len:60 in + let (fo,ff) = Format.get_formatter_output_functions () + and margin = Format.get_margin () in + Format.set_formatter_output_functions out:buf#out flush:(fun () -> ()); + Format.set_margin 60; + Format.open_hbox (); + if kind = `Type then + Printtyp.type_declaration + (ident_of_path path default:"t") + (find_type path env) + else + Printtyp.modtype_declaration + (ident_of_path path default:"S") + (find_modtype path env); + Format.close_box (); Format.print_flush (); + Format.set_formatter_output_functions out:fo flush:ff; + Format.set_margin margin; + let l = Str.split sep:(Str.regexp "\n") buf#get in + let font = + let font = + Option.get Widget.default_toplevel name:"font" class:"Font" in + if font = "" then "7x14" else font + in + (* Menu.add_separator menu; *) + List.iter l + fun:(fun label -> Menu.add_command menu :label :font state:`Disabled) + end; + menu + +(* search and view in a structure *) + +type fkind = + [ `Exp [`Expr|`Pat|`Const|`Val Path.t|`Var Path.t|`New Path.t] + * Types.type_expr + | `Class Path.t * Types.class_type + | `Module Path.t * Types.module_type ] +exception Found_str of fkind * Env.t + +let view_type kind :env = + match kind with + `Exp (k, ty) -> + begin match k with + `Expr -> view_expr_type ty title:"Expression type" :env + | `Pat -> view_expr_type ty title:"Pattern type" :env + | `Const -> view_expr_type ty title:"Constant type" :env + | `Val path -> + begin try + let vd = find_value path env in + view_signature_item :path :env + [Tsig_value(ident_of_path path default:"v", vd)] + with Not_found -> + view_expr_type ty :path :env + end + | `Var path -> + let vd = find_value path env in + view_expr_type vd.val_type :env :path title:"Variable type" + | `New path -> + let cl = find_class path env in + view_signature_item :path :env + [Tsig_class(ident_of_path path default:"c", cl)] + end + | `Class (path, cty) -> + let cld = { cty_params = []; cty_type = cty; + cty_path = path; cty_new = None } in + view_signature_item :path :env + [Tsig_class(ident_of_path path default:"c", cld)] + | `Module (path, mty) -> + match mty with + Tmty_signature sign -> view_signature sign :path :env + | modtype -> + view_signature_item :path :env + [Tsig_module(ident_of_path path default:"M", mty)] + +let view_type_menu kind :env :parent = + let title = + match kind with + `Exp (`Expr,_) -> "Expression :" + | `Exp (`Pat, _) -> "Pattern :" + | `Exp (`Const, _) -> "Constant :" + | `Exp (`Val path, _) -> "Value " ^ string_of_path path ^ " :" + | `Exp (`Var path, _) -> + "Variable " ^ Ident.name (ident_of_path path default:"noname") ^ " :" + | `Exp (`New path, _) -> "Class " ^ string_of_path path ^ " :" + | `Class (path, _) -> "Class " ^ string_of_path path ^ " :" + | `Module (path,_) -> "Module " ^ string_of_path path in + let menu = Menu.create :parent tearoff:false () in + begin match kind with + `Exp((`Expr | `Pat | `Const | `Val (Pident _)),_) -> + Menu.add_command menu label:title state:`Disabled + | `Exp _ | `Class _ | `Module _ -> + Menu.add_command menu label:title + command:(fun () -> view_type kind :env) + end; + begin match kind with `Module _ | `Class _ -> () + | `Exp(_, ty) -> + let buf = new buffer len:60 in + let (fo,ff) = Format.get_formatter_output_functions () + and margin = Format.get_margin () in + Format.set_formatter_output_functions out:buf#out flush:(fun () -> ()); + Format.set_margin 60; + Format.open_hbox (); + Printtyp.reset (); + Printtyp.mark_loops ty; + Printtyp.type_expr ty; + Format.close_box (); Format.print_flush (); + Format.set_formatter_output_functions out:fo flush:ff; + Format.set_margin margin; + let l = Str.split sep:(Str.regexp "\n") buf#get in + let font = + let font = + Option.get Widget.default_toplevel name:"font" class:"Font" in + if font = "" then "7x14" else font + in + (* Menu.add_separator menu; *) + List.iter l fun: + begin fun label -> match (Ctype.repr ty).desc with + Tconstr (path,_,_) -> + Menu.add_command menu :label :font + command:(fun () -> view_type_decl path :env) + | Tvariant {row_name = Some (path, _)} -> + Menu.add_command menu :label :font + command:(fun () -> view_type_decl path :env) + | _ -> + Menu.add_command menu :label :font state:`Disabled + end + end; + menu + +let rec search_pos_structure :pos str = + List.iter str fun: + begin function + Tstr_eval exp -> search_pos_expr exp :pos + | Tstr_value (rec_flag, l) -> + List.iter l fun: + begin fun (pat, exp) -> + let env = + if rec_flag = Asttypes.Recursive then exp.exp_env else Env.empty in + search_pos_pat pat :pos :env; + search_pos_expr exp :pos + end + | Tstr_primitive (_, vd) ->() + | Tstr_type _ -> () + | Tstr_exception _ -> () + | Tstr_module (_, m) -> search_pos_module_expr m :pos + | Tstr_modtype _ -> () + | Tstr_open _ -> () + | Tstr_class l -> + List.iter l fun:(fun (id, _, _, cl) -> search_pos_class_expr cl :pos) + | Tstr_cltype _ -> () + end + +and search_pos_class_expr :pos cl = + if in_loc cl.cl_loc :pos then begin + begin match cl.cl_desc with + Tclass_ident path -> + raise (Found_str (`Class (path, cl.cl_type), !start_env)) + | Tclass_structure cls -> + List.iter cls.cl_field fun: + begin function + Cf_inher (cl, _, _) -> + search_pos_class_expr cl :pos + | Cf_val (_, _, exp) -> search_pos_expr exp :pos + | Cf_meth (_, exp) -> search_pos_expr exp :pos + | Cf_let (_, pel, iel) -> + List.iter pel fun: + begin fun (pat, exp) -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp :pos + end; + List.iter iel fun:(fun (_,exp) -> search_pos_expr exp :pos) + | Cf_init exp -> search_pos_expr exp :pos + end + | Tclass_fun (pat, iel, cl, _) -> + search_pos_pat pat :pos env:pat.pat_env; + List.iter iel fun:(fun (_,exp) -> search_pos_expr exp :pos); + search_pos_class_expr cl :pos + | Tclass_apply (cl, el) -> + search_pos_class_expr cl :pos; + List.iter el fun:(Misc.may (search_pos_expr :pos)) + | Tclass_let (_, pel, iel, cl) -> + List.iter pel fun: + begin fun (pat, exp) -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp :pos + end; + List.iter iel fun:(fun (_,exp) -> search_pos_expr exp :pos); + search_pos_class_expr cl :pos + | Tclass_constraint (cl, _, _, _) -> + search_pos_class_expr cl :pos + end; + raise (Found_str + (`Class (Pident (Ident.create "c"), cl.cl_type), !start_env)) + end + +and search_pos_expr :pos exp = + if in_loc exp.exp_loc :pos then begin + begin match exp.exp_desc with + Texp_ident (path, _) -> + raise (Found_str (`Exp(`Val path, exp.exp_type), exp.exp_env)) + | Texp_constant v -> + raise (Found_str (`Exp(`Const, exp.exp_type), exp.exp_env)) + | Texp_let (_, expl, exp) -> + List.iter expl fun: + begin fun (pat, exp') -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp' :pos + end; + search_pos_expr exp :pos + | Texp_function (l, _) -> + List.iter l fun: + begin fun (pat, exp) -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp :pos + end + | Texp_apply (exp, l) -> + List.iter l fun:(Misc.may (search_pos_expr :pos)); + search_pos_expr exp :pos + | Texp_match (exp, l, _) -> + search_pos_expr exp :pos; + List.iter l fun: + begin fun (pat, exp) -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp :pos + end + | Texp_try (exp, l) -> + search_pos_expr exp :pos; + List.iter l fun: + begin fun (pat, exp) -> + search_pos_pat pat :pos env:exp.exp_env; + search_pos_expr exp :pos + end + | Texp_tuple l -> List.iter l fun:(search_pos_expr :pos) + | Texp_construct (_, l) -> List.iter l fun:(search_pos_expr :pos) + | Texp_variant (_, None) -> () + | Texp_variant (_, Some exp) -> search_pos_expr exp :pos + | Texp_record (l, opt) -> + List.iter l fun:(fun (_, exp) -> search_pos_expr exp :pos); + (match opt with None -> () | Some exp -> search_pos_expr exp :pos) + | Texp_field (exp, _) -> search_pos_expr exp :pos + | Texp_setfield (a, _, b) -> + search_pos_expr a :pos; search_pos_expr b :pos + | Texp_array l -> List.iter l fun:(search_pos_expr :pos) + | Texp_ifthenelse (a, b, c) -> + search_pos_expr a :pos; search_pos_expr b :pos; + begin match c with None -> () + | Some exp -> search_pos_expr exp :pos + end + | Texp_sequence (a,b) -> + search_pos_expr a :pos; search_pos_expr b :pos + | Texp_while (a,b) -> + search_pos_expr a :pos; search_pos_expr b :pos + | Texp_for (_, a, b, _, c) -> + List.iter [a;b;c] fun:(search_pos_expr :pos) + | Texp_when (a, b) -> + search_pos_expr a :pos; search_pos_expr b :pos + | Texp_send (exp, _) -> search_pos_expr exp :pos + | Texp_new (path, _) -> + raise (Found_str (`Exp(`New path, exp.exp_type), exp.exp_env)) + | Texp_instvar (_,path) -> + raise (Found_str (`Exp(`Var path, exp.exp_type), exp.exp_env)) + | Texp_setinstvar (_, path, exp) -> + search_pos_expr exp :pos; + raise (Found_str (`Exp(`Var path, exp.exp_type), exp.exp_env)) + | Texp_override (_, l) -> + List.iter l fun:(fun (_, exp) -> search_pos_expr exp :pos) + | Texp_letmodule (id, modexp, exp) -> + search_pos_module_expr modexp :pos; + search_pos_expr exp :pos + end; + raise (Found_str (`Exp(`Expr, exp.exp_type), exp.exp_env)) + end + +and search_pos_pat :pos :env pat = + if in_loc pat.pat_loc :pos then begin + begin match pat.pat_desc with + Tpat_any -> () + | Tpat_var id -> + raise (Found_str (`Exp(`Val (Pident id), pat.pat_type), env)) + | Tpat_alias (pat, _) -> search_pos_pat pat :pos :env + | Tpat_constant _ -> + raise (Found_str (`Exp(`Const, pat.pat_type), env)) + | Tpat_tuple l -> + List.iter l fun:(search_pos_pat :pos :env) + | Tpat_construct (_, l) -> + List.iter l fun:(search_pos_pat :pos :env) + | Tpat_variant (_, None, _) -> () + | Tpat_variant (_, Some pat, _) -> search_pos_pat pat :pos :env + | Tpat_record l -> + List.iter l fun:(fun (_, pat) -> search_pos_pat pat :pos :env) + | Tpat_array l -> + List.iter l fun:(search_pos_pat :pos :env) + | Tpat_or (a, b) -> + search_pos_pat a :pos :env; search_pos_pat b :pos :env + end; + raise (Found_str (`Exp(`Pat, pat.pat_type), env)) + end + +and search_pos_module_expr :pos m = + if in_loc m.mod_loc :pos then begin + begin match m.mod_desc with + Tmod_ident path -> + raise + (Found_str (`Module (path, m.mod_type), m.mod_env)) + | Tmod_structure str -> search_pos_structure str :pos + | Tmod_functor (_, _, m) -> search_pos_module_expr m :pos + | Tmod_apply (a, b, _) -> + search_pos_module_expr a :pos; search_pos_module_expr b :pos + | Tmod_constraint (m, _, _) -> search_pos_module_expr m :pos + end; + raise (Found_str (`Module (Pident (Ident.create "M"), m.mod_type), + m.mod_env)) + end |