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-rw-r--r--lib/stdlib/src/erl_pp.erl59
1 files changed, 45 insertions, 14 deletions
diff --git a/lib/stdlib/src/erl_pp.erl b/lib/stdlib/src/erl_pp.erl
index 469ce544c7..623a29f923 100644
--- a/lib/stdlib/src/erl_pp.erl
+++ b/lib/stdlib/src/erl_pp.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2014. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. 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
@@ -46,6 +46,23 @@
-record(options, {hook, encoding, opts}).
+%-define(DEBUG, true).
+
+-ifdef(DEBUG).
+-define(TEST(T),
+ %% Assumes that erl_anno has been compiled with DEBUG=true.
+ %% erl_pp does not use the annoations, but test it anyway.
+ %% Note: hooks are not handled.
+ _ = try
+ erl_parse:map_anno(fun(A) when is_list(A) -> A end, T)
+ catch
+ _:_ ->
+ erlang:error(badarg, [T])
+ end).
+-else.
+-define(TEST(T), ok).
+-endif.
+
%%%
%%% Exported functions
%%%
@@ -61,6 +78,7 @@ form(Thing) ->
Options :: options()).
form(Thing, Options) ->
+ ?TEST(Thing),
State = state(Options),
frmt(lform(Thing, options(Options), State), State).
@@ -75,6 +93,7 @@ attribute(Thing) ->
Options :: options()).
attribute(Thing, Options) ->
+ ?TEST(Thing),
State = state(Options),
frmt(lattribute(Thing, options(Options), State), State).
@@ -89,6 +108,7 @@ function(F) ->
Options :: options()).
function(F, Options) ->
+ ?TEST(F),
frmt(lfunction(F, options(Options)), state(Options)).
-spec(guard(Guard) -> io_lib:chars() when
@@ -102,6 +122,7 @@ guard(Gs) ->
Options :: options()).
guard(Gs, Options) ->
+ ?TEST(Gs),
frmt(lguard(Gs, options(Options)), state(Options)).
-spec(exprs(Expressions) -> io_lib:chars() when
@@ -123,12 +144,14 @@ exprs(Es, Options) ->
Options :: options()).
exprs(Es, I, Options) ->
+ ?TEST(Es),
frmt({seq,[],[],[$,],lexprs(Es, options(Options))}, I, state(Options)).
-spec(expr(Expression) -> io_lib:chars() when
Expression :: erl_parse:abstract_expr()).
expr(E) ->
+ ?TEST(E),
frmt(lexpr(E, 0, options(none)), state(none)).
-spec(expr(Expression, Options) -> io_lib:chars() when
@@ -136,6 +159,7 @@ expr(E) ->
Options :: options()).
expr(E, Options) ->
+ ?TEST(E),
frmt(lexpr(E, 0, options(Options)), state(Options)).
-spec(expr(Expression, Indent, Options) -> io_lib:chars() when
@@ -144,6 +168,7 @@ expr(E, Options) ->
Options :: options()).
expr(E, I, Options) ->
+ ?TEST(E),
frmt(lexpr(E, 0, options(Options)), I, state(Options)).
-spec(expr(Expression, Indent, Precedence, Options) -> io_lib:chars() when
@@ -153,6 +178,7 @@ expr(E, I, Options) ->
Options :: options()).
expr(E, I, P, Options) ->
+ ?TEST(E),
frmt(lexpr(E, P, options(Options)), I, state(Options)).
%%%
@@ -213,24 +239,25 @@ lattribute({attribute,_Line,Name,Arg}, Opts, State) ->
[lattribute(Name, Arg, Opts, State),leaf(".\n")].
lattribute(module, {M,Vs}, _Opts, _State) ->
- attr("module",[{var,0,pname(M)},
- foldr(fun(V, C) -> {cons,0,{var,0,V},C}
- end, {nil,0}, Vs)]);
+ A = a0(),
+ attr("module",[{var,A,pname(M)},
+ foldr(fun(V, C) -> {cons,A,{var,A,V},C}
+ end, {nil,A}, Vs)]);
lattribute(module, M, _Opts, _State) ->
- attr("module", [{var,0,pname(M)}]);
+ attr("module", [{var,a0(),pname(M)}]);
lattribute(export, Falist, _Opts, _State) ->
- call({var,0,"-export"}, [falist(Falist)], 0, options(none));
+ call({var,a0(),"-export"}, [falist(Falist)], 0, options(none));
lattribute(import, Name, _Opts, _State) when is_list(Name) ->
- attr("import", [{var,0,pname(Name)}]);
+ attr("import", [{var,a0(),pname(Name)}]);
lattribute(import, {From,Falist}, _Opts, _State) ->
- attr("import",[{var,0,pname(From)},falist(Falist)]);
+ attr("import",[{var,a0(),pname(From)},falist(Falist)]);
lattribute(optional_callbacks, Falist, Opts, _State) ->
ArgL = try falist(Falist)
catch _:_ -> abstract(Falist, Opts)
end,
- call({var,0,"-optional_callbacks"}, [ArgL], 0, options(none));
+ call({var,a0(),"-optional_callbacks"}, [ArgL], 0, options(none));
lattribute(file, {Name,Line}, _Opts, State) ->
- attr("file", [{var,0,(State#pp.string_fun)(Name)},{integer,0,Line}]);
+ attr("file", [{var,a0(),(State#pp.string_fun)(Name)},{integer,a0(),Line}]);
lattribute(record, {Name,Is}, Opts, _State) ->
Nl = leaf(format("-record(~w,", [Name])),
[{first,Nl,record_fields(Is, Opts)},$)];
@@ -242,7 +269,7 @@ abstract(Arg, #options{encoding = Encoding}) ->
typeattr(Tag, {TypeName,Type,Args}, _Opts) ->
{first,leaf("-"++atom_to_list(Tag)++" "),
- typed(call({atom,0,TypeName}, Args, 0, options(none)), Type)}.
+ typed(call({atom,a0(),TypeName}, Args, 0, options(none)), Type)}.
ltype({ann_type,_Line,[V,T]}) ->
typed(lexpr(V, options(none)), T);
@@ -384,7 +411,7 @@ ltypes(Ts, F) ->
[F(T) || T <- Ts].
attr(Name, Args) ->
- call({var,0,format("-~s", [Name])}, Args, 0, options(none)).
+ call({var,a0(),format("-~s", [Name])}, Args, 0, options(none)).
pname(['' | As]) ->
[$. | pname(As)];
@@ -396,9 +423,10 @@ pname(A) when is_atom(A) ->
write(A).
falist([]) ->
- {nil,0};
+ {nil,a0()};
falist([{Name,Arity}|Falist]) ->
- {cons,0,{var,0,format("~w/~w", [Name,Arity])},falist(Falist)}.
+ A = a0(),
+ {cons,A,{var,A,format("~w/~w", [Name,Arity])},falist(Falist)}.
lfunction({function,_Line,Name,_Arity,Cs}, Opts) ->
Cll = nl_clauses(fun (C, H) -> func_clause(Name, C, H) end, $;, Opts, Cs),
@@ -1111,6 +1139,9 @@ write_char(C, PP) ->
%% Utilities
%%
+a0() ->
+ erl_anno:new(0).
+
chars_size([C | Es]) when is_integer(C) ->
1 + chars_size(Es);
chars_size([E | Es]) ->