diff options
Diffstat (limited to 'lib/syntax_tools/src/erl_tidy.erl')
| -rw-r--r-- | lib/syntax_tools/src/erl_tidy.erl | 53 |
1 files changed, 18 insertions, 35 deletions
diff --git a/lib/syntax_tools/src/erl_tidy.erl b/lib/syntax_tools/src/erl_tidy.erl index 38e0c2099b..9e273dfb84 100644 --- a/lib/syntax_tools/src/erl_tidy.erl +++ b/lib/syntax_tools/src/erl_tidy.erl @@ -36,6 +36,11 @@ %% been reasonably well tested, but the possibility of errors remains. %% Keep backups of your original code safely stored, until you feel %% confident that the new, modified code can be trusted. +%% +%% @type syntaxTree() = erl_syntax:syntaxTree(). An abstract syntax +%% tree. See the {@link erl_syntax} module for details. +%% +%% @type filename() = file:filename(). -module(erl_tidy). @@ -79,7 +84,6 @@ dir(Dir) -> %% ===================================================================== %% @spec dir(Directory::filename(), Options::[term()]) -> ok -%% filename() = file:filename() %% %% @doc Tidies Erlang source files in a directory and its %% subdirectories. @@ -206,7 +210,7 @@ file__defaults() -> {verbose, false}]. default_printer() -> - fun (Tree, Options) -> erl_prettypr:format(Tree, Options) end. + fun erl_prettypr:format/2. %% ===================================================================== %% @spec file(Name) -> ok @@ -253,7 +257,7 @@ file(Name) -> %% %% <dt>{printer, Function}</dt> %% <dd><ul> -%% <li>`Function = (syntaxTree()) -> string()'</li> +%% <li>`Function = (syntaxTree(), [term()]) -> string()'</li> %% </ul> %% %% Specifies a function for prettyprinting Erlang syntax trees. @@ -414,7 +418,7 @@ write_module(Tree, Name, Opts) -> print_module(Tree, Opts) -> Printer = proplists:get_value(printer, Opts), - io:format(Printer(Tree, Opts)). + io:put_chars(Printer(Tree, Opts)). output(FD, Printer, Tree, Opts) -> io:put_chars(FD, Printer(Tree, Opts)), @@ -513,7 +517,6 @@ module(Forms) -> %% @spec module(Forms, Options::[term()]) -> syntaxTree() %% %% Forms = syntaxTree() | [syntaxTree()] -%% syntaxTree() = erl_syntax:syntaxTree() %% %% @doc Tidies a syntax tree representation of a module %% definition. The given `Forms' may be either a single @@ -792,16 +795,11 @@ keep_form(Form, Used, Opts) -> N = erl_syntax_lib:analyze_function(Form), case sets:is_element(N, Used) of false -> - report_removed_def("function", N, Form, Opts), - false; - true -> - true - end; - rule -> - N = erl_syntax_lib:analyze_rule(Form), - case sets:is_element(N, Used) of - false -> - report_removed_def("rule", N, Form, Opts), + {F, A} = N, + File = proplists:get_value(file, Opts, ""), + report({File, erl_syntax:get_pos(Form), + "removing unused function `~w/~w'."}, + [F, A], Opts), false; true -> true @@ -823,12 +821,6 @@ keep_form(Form, Used, Opts) -> true end. -report_removed_def(Type, {N, A}, Form, Opts) -> - File = proplists:get_value(file, Opts, ""), - report({File, erl_syntax:get_pos(Form), - "removing unused ~s `~w/~w'."}, - [Type, N, A], Opts). - collect_functions(Forms) -> lists:foldl( fun (F, {Names, Defs}) -> @@ -837,10 +829,6 @@ collect_functions(Forms) -> N = erl_syntax_lib:analyze_function(F), {sets:add_element(N, Names), dict:store(N, {F, []}, Defs)}; - rule -> - N = erl_syntax_lib:analyze_rule(F), - {sets:add_element(N, Names), - dict:store(N, {F, []}, Defs)}; _ -> {Names, Defs} end @@ -855,11 +843,6 @@ update_forms([F | Fs], Defs, Imports, Opts) -> {F1, Fs1} = dict:fetch(N, Defs), [F1 | lists:reverse(Fs1)] ++ update_forms(Fs, Defs, Imports, Opts); - rule -> - N = erl_syntax_lib:analyze_rule(F), - {F1, Fs1} = dict:fetch(N, Defs), - [F1 | lists:reverse(Fs1)] ++ update_forms(Fs, Defs, Imports, - Opts); attribute -> [update_attribute(F, Imports, Opts) | update_forms(Fs, Defs, Imports, Opts)]; @@ -957,7 +940,7 @@ hidden_uses_2(Tree, Used) -> -record(env, {file :: file:filename(), module :: atom(), - current :: fa(), + current :: fa() | 'undefined', imports = dict:new() :: dict:dict(atom(), atom()), context = normal :: context(), verbosity = 1 :: 0 | 1 | 2, @@ -969,10 +952,10 @@ hidden_uses_2(Tree, Used) -> new_guard_tests = true :: boolean(), old_guard_tests = false :: boolean()}). --record(st, {varc :: non_neg_integer(), +-record(st, {varc :: non_neg_integer() | 'undefined', used = sets:new() :: sets:set({atom(), arity()}), imported :: sets:set({atom(), arity()}), - vars :: sets:set(atom()), + vars :: sets:set(atom()) | 'undefined', functions :: sets:set({atom(), arity()}), new_forms = [] :: [erl_syntax:syntaxTree()], rename :: dict:dict(mfa(), {atom(), atom()})}). @@ -1084,13 +1067,13 @@ visit_clause(Tree, Env, St0) -> visit_infix_expr(Tree, #env{context = guard_test}, St0) -> %% Detect transition from guard test to guard expression. - visit_other(Tree, #env{context = guard_expr}, St0); + visit_other(Tree, #env{context = guard_expr, file = ""}, St0); visit_infix_expr(Tree, Env, St0) -> visit_other(Tree, Env, St0). visit_prefix_expr(Tree, #env{context = guard_test}, St0) -> %% Detect transition from guard test to guard expression. - visit_other(Tree, #env{context = guard_expr}, St0); + visit_other(Tree, #env{context = guard_expr, file = ""}, St0); visit_prefix_expr(Tree, Env, St0) -> visit_other(Tree, Env, St0). |