Merge branch 'dev' of super:otp into dev

* 'dev' of super:otp: (166 commits)
  Corrected documentation error and added examples to Users Guide
  In TLS 1.1, failure to properly close a connection no longer requires that a session not be resumed.  This is a change from TLS 1.0 to conform with widespread implementation practice.  Erlang ssl will now in TLS 1.0 conform to the widespread implementation practice instead of the specification to avoid performance issues.
  Add escript to bootstrap/bin
  Remove unused variable warning in inet_res
  Remove unused variable in epmd_port
  Remove compiler warnings in inet_drv
  Add SASL test suite
  Allow same module name in multiple applications if explicitely excluded
  Fix bugs concerning the option report_missing_types
  Fix default encoding in SAX parser.
  re: remove gratuitous "it " in manpage
  Spelling in (backward *compatibility*) comment.
  Improve erl_docgen's support for Dialyzer specs and types
  dialyzer warning on mnesia_tm
  Add documentation text about majority checking
  add mnesia_majority_test suite
  where_to_wlock optimization + change_table_majority/2
  bug in mnesia_tm:needs_majority/2
  optimize sticky_lock maj. check
  check majority for sticky locks
  ...

1 files changed, 64 insertions, 37 deletions

diff --git a/lib/erl_docgen/priv/bin/specs_gen.escript b/lib/erl_docgen/priv/bin/specs_gen.escript
index 840fed6dd5..982afece7f 100644
--- a/lib/erl_docgen/priv/bin/specs_gen.escript
+++ b/lib/erl_docgen/priv/bin/specs_gen.escript
@@ -2,7 +2,7 @@
 %% -*- erlang -*-
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2010. All Rights Reserved.
+%% Copyright Ericsson AB 2011. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -29,7 +29,7 @@
 %%%  "-I<dir>" Directory to be searched when including a file.
 %%%  "-module Module"
 %%%            Module name to use when there is no File argument.
-%%%            A temporary file will be created.
+%%%            A empty specifications file will be created.
 %%%            Exactly one of -module Module and File must be given.
 %%%
 %%% The name of the generated file is "specs_<module>.xml". Its exact
@@ -67,34 +67,73 @@ usage() ->
     halt(1).
 
 call_edoc(FileSpec, InclFs, Dir) ->
-    Incl = [{includes, InclFs}],
-    Pre = [{preprocess, true}],
-    Choice = [{dialyzer_specs, all}],
-    DirOpt = [{dir, Dir}],
-    Pretty = [{pretty_print, erl_pp}],
-    Layout = [{layout, otp_specs},
-              {file_suffix, ".specs"},
-              {stylesheet, ""}],
-    Warn = [{report_missing_type, false},
-            {report_type_mismatch, false}],
-    OptionList = (DirOpt ++ Choice ++ Pre ++ Warn ++ Pretty ++ Layout ++ Incl),
-    {File, TmpFile} = case FileSpec of
-                          {file, File0} ->
-                              {File0, false};
-                          {module, Module} ->
-                              {create_tmp_file(Dir, Module), true}
-                      end,
-    try edoc:files([File], OptionList) of
-        ok ->
-            clean_up(Dir, File, TmpFile),
-            rename(Dir, File)
+    ReadOpts = [{includes, InclFs}, {preprocess, true}],
+    ExtractOpts = [{report_missing_type, false}],
+    LayoutOpts = [{pretty_printer, erl_pp}, {layout, otp_specs}],
+    File = case FileSpec of
+               {file, File0} -> File0;
+               {module, Module0} -> Module0
+           end,
+    try
+        Fs = case FileSpec of
+                 {file, _} ->
+                     Fs0 = read_file(File, ReadOpts),
+                     clauses(Fs0);
+                 {module, Module} ->
+                     [{attribute,0,module,list_to_atom(Module)}]
+             end,
+        Doc = extract(File, Fs, ExtractOpts),
+        Text = edoc:layout(Doc, LayoutOpts),
+        ok = write_text(Text, File, Dir),
+        rename(Dir, File)
     catch
         _:_ ->
             io:format("EDoc could not process file '~s'\n", [File]),
-            clean_up(Dir, File, TmpFile),
+            clean_up(Dir),
             halt(3)
     end.
 
+read_file(File, Opts) ->
+    edoc:read_source(File, Opts).
+
+extract(File, Forms, Opts) ->
+    Env = edoc_lib:get_doc_env([], [], [], _Opts=[]),
+    {_Module, Doc} = edoc_extract:source(Forms, File, Env, Opts),
+    Doc.
+
+clauses(Fs) ->
+    clauses(Fs, no).
+
+clauses([], no) ->
+    [];
+clauses([F | Fs], Spec) ->
+    case F of
+        {attribute,_,spec,_} ->
+            clauses(Fs, F);
+        {function,_,_N,_A,_Cls} when Spec =/= no->
+            {attribute,_,spec,{Name,FunTypes}} = Spec,
+            %% [throw({no,Name,{_N,_A}}) || Name =/= {_N,_A}],
+            %% EDoc doesn't care if a function appears more than once;
+            %% this is how overloaded specs are handled:
+            (lists:append([[setelement(4, Spec, {Name,[T]}),F] ||
+                              T <- FunTypes])
+             ++ clauses(Fs, no));
+        _ ->
+            [F | clauses(Fs, Spec)]
+    end.
+
+write_text(Text, File, Dir) ->
+    Base = filename:basename(File, ".erl"),
+    OutFile = filename:join(Dir, Base) ++ ".specs",
+    case file:write_file(OutFile, Text) of
+        ok ->
+            ok;
+        {error, R} ->
+            R1 = file:format_error(R),
+            io:format("could not write file '~s': ~s\n", [File, R1]),
+            halt(2)
+    end.
+
 rename(Dir, F) ->
     Mod = filename:basename(F, ".erl"),
     Old = filename:join(Dir, Mod ++ ".specs"),
@@ -108,22 +147,10 @@ rename(Dir, F) ->
             halt(2)
     end.
 
-clean_up(Dir, File, TmpFile) ->
-    [file:delete(File) || TmpFile],
+clean_up(Dir) ->
     _ = [file:delete(filename:join(Dir, F)) ||
             F <- ["packages-frame.html",
                   "overview-summary.html",
                   "modules-frame.html",
                   "index.html", "erlang.png", "edoc-info"]],
     ok.
-
-create_tmp_file(Dir, Module) ->
-    TmpFile = filename:join(Dir, Module++".erl"),
-    case file:write_file(TmpFile, "-module(" ++ Module ++ ").\n") of
-        ok ->
-            TmpFile;
-        {error, R} ->
-            R1 = file:format_error(R),
-            io:format("could not write file '~s': ~s\n", [TmpFile, R1]),
-            halt(2)
-    end.