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authorHans Bolinder <[email protected]>2017-04-28 09:26:52 +0200
committerHans Bolinder <[email protected]>2017-04-28 09:26:52 +0200
commite984e201381e1c70679b628022a1218d5090ce55 (patch)
tree231a3bf46f34981f4dd44951169a6ac95c83ab53
parentb674f7b827dec8fd220b858fba1a7d093594cc0b (diff)
parentee2dde4f7f8508d58a9e1b16da66e26f99cf1cc0 (diff)
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Merge branch 'hasse/stdlib/fix_qlc_bug/OTP-14296'
* hasse/stdlib/fix_qlc_bug/OTP-14296: stdlib: Fix a test in sofs_SUITE debugger: Improve handling of pids, ports, and refs stdlib: Improve handling of pids, ports, and refs in qlc stdlib: Improve the Erlang shell's handling of references
-rw-r--r--lib/debugger/doc/src/debugger_chapter.xml8
-rw-r--r--lib/debugger/src/dbg_icmd.erl44
-rw-r--r--lib/debugger/src/dbg_wx_win.erl5
-rw-r--r--lib/stdlib/doc/src/shell.xml21
-rw-r--r--lib/stdlib/src/lib.erl223
-rw-r--r--lib/stdlib/src/qlc.erl45
-rw-r--r--lib/stdlib/src/shell.erl9
-rw-r--r--lib/stdlib/test/qlc_SUITE.erl85
-rw-r--r--lib/stdlib/test/shell_SUITE.erl93
-rw-r--r--lib/stdlib/test/sofs_SUITE.erl4
-rw-r--r--system/doc/efficiency_guide/processes.xml4
11 files changed, 468 insertions, 73 deletions
diff --git a/lib/debugger/doc/src/debugger_chapter.xml b/lib/debugger/doc/src/debugger_chapter.xml
index 45dfdb3776..3c37d4b924 100644
--- a/lib/debugger/doc/src/debugger_chapter.xml
+++ b/lib/debugger/doc/src/debugger_chapter.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>1997</year><year>2016</year>
+ <year>1997</year><year>2017</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -652,8 +652,10 @@ c_break(Bindings) ->
<item><p>The Bindings area, displaying all variables bindings. If you
click a variable name, the value is displayed in the Evaluator area.
Double-click a variable name to open a window where
- the variable value can be edited. Notice however that pid,
- reference, binary, or port values cannot be edited.</p>
+ the variable value can be edited. Notice however that pid, port,
+ reference, or fun
+ values cannot be edited unless they can be represented in the
+ running system.</p>
</item>
<item><p>The Trace area, which displays a trace output for the
diff --git a/lib/debugger/src/dbg_icmd.erl b/lib/debugger/src/dbg_icmd.erl
index 57a3719a50..4cd3dce670 100644
--- a/lib/debugger/src/dbg_icmd.erl
+++ b/lib/debugger/src/dbg_icmd.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -382,14 +382,19 @@ eval_restricted({From,_Mod,Cmd,SP}, Bs) ->
case catch parse_cmd(Cmd, 1) of
{'EXIT', _Reason} ->
From ! {self(), {eval_rsp, 'Parse error'}};
- [{var,_,Var}] ->
+ {[{var,_,Var}], XBs} ->
Bs2 = bindings(Bs, SP),
Res = case get_binding(Var, Bs2) of
{value, Value} -> Value;
- unbound -> unbound
+ unbound ->
+ case get_binding(Var, XBs) of
+ {value, _} ->
+ 'Only possible to inspect variables';
+ unbound -> unbound
+ end
end,
From ! {self(), {eval_rsp, Res}};
- _Forms ->
+ {_Forms, _XBs} ->
Rsp = 'Only possible to inspect variables',
From ! {self(), {eval_rsp, Rsp}}
end.
@@ -404,22 +409,22 @@ eval_nonrestricted({From, _Mod, Cmd, _SP}, Bs,
{'EXIT', _Reason} ->
From ! {self(), {eval_rsp, 'Parse error'}},
Bs;
- Forms ->
+ {Forms, XBs} ->
mark_running(Line, Le),
+ Bs1 = merge_bindings(Bs, XBs),
{Res, Bs2} =
lists:foldl(fun(Expr, {_Res, Bs0}) ->
eval_nonrestricted_1(Expr,Bs0,Ieval)
end,
- {null, Bs},
+ {null, Bs1},
Forms),
mark_break(M, Line, Le),
From ! {self(), {eval_rsp, Res}},
- Bs2
+ remove_binding_structs(Bs2, XBs)
end.
eval_nonrestricted_1({match,_,{var,_,Var},Expr}, Bs, Ieval) ->
- {value,Res,Bs2} =
- dbg_ieval:eval_expr(Expr, Bs, Ieval#ieval{top=false}),
+ {Res,Bs2} = eval_expr(Expr, Bs, Ieval),
Bs3 = case lists:keyfind(Var, 1, Bs) of
{Var,_Value} ->
lists:keyreplace(Var, 1, Bs2, {Var,Res});
@@ -433,10 +438,21 @@ eval_nonrestricted_1({var,_,Var}, Bs, _Ieval) ->
end,
{Res,Bs};
eval_nonrestricted_1(Expr, Bs, Ieval) ->
- {value,Res,Bs2} =
- dbg_ieval:eval_expr(Expr, Bs, Ieval#ieval{top=false}),
+ eval_expr(Expr, Bs, Ieval).
+
+eval_expr(Expr, Bs, Ieval) ->
+ {value,Res,Bs2} =
+ dbg_ieval:eval_expr(Expr, Bs, Ieval#ieval{top=false}),
{Res,Bs2}.
+%% XBs have unique keys.
+merge_bindings(Bs1, XBs) ->
+ Bs1 ++ erl_eval:bindings(XBs).
+
+remove_binding_structs(Bs1, XBs) ->
+ lists:foldl(fun({N, _V}, Bs) -> lists:keydelete(N, 1, Bs)
+ end, Bs1, erl_eval:bindings(XBs)).
+
mark_running(LineNo, Le) ->
put(next_break, running),
put(user_eval, [{LineNo, Le} | get(user_eval)]),
@@ -450,9 +466,9 @@ mark_break(Cm, LineNo, Le) ->
dbg_iserver:cast(get(int), {set_status,self(),break,{Cm,LineNo}}).
parse_cmd(Cmd, LineNo) ->
- {ok,Tokens,_} = erl_scan:string(Cmd, LineNo),
- {ok,Forms} = erl_parse:parse_exprs(Tokens),
- Forms.
+ {ok,Tokens,_} = erl_scan:string(Cmd, LineNo, [text]),
+ {ok,Forms,Bs} = lib:extended_parse_exprs(Tokens),
+ {Forms, Bs}.
%%====================================================================
%% Library functions for attached process handling
diff --git a/lib/debugger/src/dbg_wx_win.erl b/lib/debugger/src/dbg_wx_win.erl
index 2c9d83ea74..f1298154ab 100644
--- a/lib/debugger/src/dbg_wx_win.erl
+++ b/lib/debugger/src/dbg_wx_win.erl
@@ -273,10 +273,9 @@ entry(Parent, Title, Prompt, {Type, Value}) ->
verify(Type, Str) ->
- case erl_scan:string(Str) of
+ case erl_scan:string(Str, 1, [text]) of
{ok, Tokens, _EndLine} when Type==term ->
-
- case erl_parse:parse_term(Tokens++[{dot, erl_anno:new(1)}]) of
+ case lib:extended_parse_term(Tokens++[{dot, erl_anno:new(1)}]) of
{ok, Value} -> {edit, Value};
_Error ->
ignore
diff --git a/lib/stdlib/doc/src/shell.xml b/lib/stdlib/doc/src/shell.xml
index ab62c2fcdd..2593d3690b 100644
--- a/lib/stdlib/doc/src/shell.xml
+++ b/lib/stdlib/doc/src/shell.xml
@@ -569,7 +569,7 @@ Hello Number: 3378
<pre>
42> <input>E = ets:new(t, []).</input>
-17</pre>
+#Ref&lt;0.1662103692.2407923716.214192></pre>
<p>Command 42 creates an ETS table.</p>
@@ -602,7 +602,7 @@ false</pre>
<pre>
47> <input>E = ets:new(t, []).</input>
-18
+#Ref&lt;0.1662103692.2407923716.214197>
48> <input>ets:insert({d,1,2}).</input>
* exception error: undefined function ets:insert/1</pre>
@@ -617,10 +617,23 @@ true</pre>
<p>Command 49 successfully inserts the tuple into the ETS table.</p>
<pre>
-50> <input>halt().</input>
+50> <input>ets:insert(#Ref&lt;0.1662103692.2407923716.214197>, {e,3,4}).</input>
+true</pre>
+
+ <p>Command 50 inserts another tuple into the ETS table. This time
+ the first argument is the table identifier itself. The shell can
+ parse commands with pids (<c>&lt;0.60.0></c>), ports
+ (<c>#Port&lt;0.536></c>), references
+ (<c>#Ref&lt;0.1662103692.2407792644.214210></c>), and external
+ functions (<c>#Fun&lt;a.b.1></c>), but the command fails unless
+ the corresponding pid, port, reference, or function can be created
+ in the running system.</p>
+
+ <pre>
+51> <input>halt().</input>
strider 2></pre>
- <p>Command 50 exits the Erlang runtime system.</p>
+ <p>Command 51 exits the Erlang runtime system.</p>
</section>
<section>
diff --git a/lib/stdlib/src/lib.erl b/lib/stdlib/src/lib.erl
index 56654097d9..aa6797bce6 100644
--- a/lib/stdlib/src/lib.erl
+++ b/lib/stdlib/src/lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -22,6 +22,9 @@
-export([flush_receive/0, error_message/2, progname/0, nonl/1, send/2,
sendw/2, eval_str/1]).
+-export([extended_parse_exprs/1, extended_parse_term/1,
+ subst_values_for_vars/2]).
+
-export([format_exception/6, format_exception/7,
format_stacktrace/4, format_stacktrace/5,
format_call/4, format_call/5, format_fun/1]).
@@ -127,6 +130,224 @@ all_white([$\t|T]) -> all_white(T);
all_white([]) -> true;
all_white(_) -> false.
+%% `Tokens' is assumed to have been scanned with the 'text' option.
+%% The annotations of the returned expressions are locations.
+%%
+%% Can handle pids, ports, references, and external funs ("items").
+%% Known items are represented by variables in the erl_parse tree, and
+%% the items themselves are stored in the returned bindings.
+
+-spec extended_parse_exprs(Tokens) ->
+ {'ok', ExprList, Bindings} | {'error', ErrorInfo} when
+ Tokens :: [erl_scan:token()],
+ ExprList :: [erl_parse:abstract_expr()],
+ Bindings :: erl_eval:binding_struct(),
+ ErrorInfo :: erl_parse:error_info().
+
+extended_parse_exprs(Tokens) ->
+ Ts = tokens_fixup(Tokens),
+ case erl_parse:parse_exprs(Ts) of
+ {ok, Exprs0} ->
+ {Exprs, Bs} = expr_fixup(Exprs0),
+ {ok, reset_expr_anno(Exprs), Bs};
+ _ErrorInfo ->
+ erl_parse:parse_exprs(reset_token_anno(Ts))
+ end.
+
+tokens_fixup([]) -> [];
+tokens_fixup([T|Ts]=Ts0) ->
+ try token_fixup(Ts0) of
+ {NewT, NewTs} ->
+ [NewT|tokens_fixup(NewTs)]
+ catch
+ _:_ ->
+ [T|tokens_fixup(Ts)]
+ end.
+
+token_fixup(Ts) ->
+ {AnnoL, NewTs, FixupTag} = unscannable(Ts),
+ String = lists:append([erl_anno:text(A) || A <- AnnoL]),
+ _ = (fixup_fun(FixupTag))(String),
+ NewAnno = erl_anno:set_text(fixup_text(FixupTag), hd(AnnoL)),
+ {{string, NewAnno, String}, NewTs}.
+
+unscannable([{'#', A1}, {var, A2, 'Fun'}, {'<', A3}, {atom, A4, _},
+ {'.', A5}, {float, A6, _}, {'>', A7}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7], Ts, function};
+unscannable([{'#', A1}, {var, A2, 'Fun'}, {'<', A3}, {atom, A4, _},
+ {'.', A5}, {atom, A6, _}, {'.', A7}, {integer, A8, _},
+ {'>', A9}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7, A8, A9], Ts, function};
+unscannable([{'<', A1}, {float, A2, _}, {'.', A3}, {integer, A4, _},
+ {'>', A5}|Ts]) ->
+ {[A1, A2, A3, A4, A5], Ts, pid};
+unscannable([{'#', A1}, {var, A2, 'Port'}, {'<', A3}, {float, A4, _},
+ {'>', A5}|Ts]) ->
+ {[A1, A2, A3, A4, A5], Ts, port};
+unscannable([{'#', A1}, {var, A2, 'Ref'}, {'<', A3}, {float, A4, _},
+ {'.', A5}, {float, A6, _}, {'>', A7}|Ts]) ->
+ {[A1, A2, A3, A4, A5, A6, A7], Ts, reference}.
+
+expr_fixup(Expr0) ->
+ {Expr, Bs, _} = expr_fixup(Expr0, erl_eval:new_bindings(), 1),
+ {Expr, Bs}.
+
+expr_fixup({string,A,S}=T, Bs0, I) ->
+ try string_fixup(A, S) of
+ Value ->
+ Var = new_var(I),
+ Bs = erl_eval:add_binding(Var, Value, Bs0),
+ {{var, A, Var}, Bs, I+1}
+ catch
+ _:_ ->
+ {T, Bs0, I}
+ end;
+expr_fixup(Tuple, Bs0, I0) when is_tuple(Tuple) ->
+ {L, Bs, I} = expr_fixup(tuple_to_list(Tuple), Bs0, I0),
+ {list_to_tuple(L), Bs, I};
+expr_fixup([E0|Es0], Bs0, I0) ->
+ {E, Bs1, I1} = expr_fixup(E0, Bs0, I0),
+ {Es, Bs, I} = expr_fixup(Es0, Bs1, I1),
+ {[E|Es], Bs, I};
+expr_fixup(T, Bs, I) ->
+ {T, Bs, I}.
+
+string_fixup(A, S) ->
+ Text = erl_anno:text(A),
+ FixupTag = fixup_tag(Text, S),
+ (fixup_fun(FixupTag))(S).
+
+new_var(I) ->
+ list_to_atom(lists:concat(['__ExtendedParseExprs_', I, '__'])).
+
+reset_token_anno(Tokens) ->
+ [setelement(2, T, (reset_anno())(element(2, T))) || T <- Tokens].
+
+reset_expr_anno(Exprs) ->
+ [erl_parse:map_anno(reset_anno(), E) || E <- Exprs].
+
+reset_anno() ->
+ fun(A) -> erl_anno:new(erl_anno:location(A)) end.
+
+fixup_fun(function) -> fun function/1;
+fixup_fun(pid) -> fun erlang:list_to_pid/1;
+fixup_fun(port) -> fun erlang:list_to_port/1;
+fixup_fun(reference) -> fun erlang:list_to_ref/1.
+
+function(S) ->
+ %% External function.
+ {ok, [_, _, _,
+ {atom, _, Module}, _,
+ {atom, _, Function}, _,
+ {integer, _, Arity}|_], _} = erl_scan:string(S),
+ erlang:make_fun(Module, Function, Arity).
+
+fixup_text(function) -> "function";
+fixup_text(pid) -> "pid";
+fixup_text(port) -> "port";
+fixup_text(reference) -> "reference".
+
+fixup_tag("function", "#"++_) -> function;
+fixup_tag("pid", "<"++_) -> pid;
+fixup_tag("port", "#"++_) -> port;
+fixup_tag("reference", "#"++_) -> reference.
+
+%%% End of extended_parse_exprs.
+
+%% `Tokens' is assumed to have been scanned with the 'text' option.
+%%
+%% Can handle pids, ports, references, and external funs.
+
+-spec extended_parse_term(Tokens) ->
+ {'ok', Term} | {'error', ErrorInfo} when
+ Tokens :: [erl_scan:token()],
+ Term :: term(),
+ ErrorInfo :: erl_parse:error_info().
+
+extended_parse_term(Tokens) ->
+ case extended_parse_exprs(Tokens) of
+ {ok, [Expr], Bindings} ->
+ try normalise(Expr, Bindings) of
+ Term ->
+ {ok, Term}
+ catch
+ _:_ ->
+ Loc = erl_anno:location(element(2, Expr)),
+ {error,{Loc,?MODULE,"bad term"}}
+ end;
+ {ok, [_,Expr|_], _Bindings} ->
+ Loc = erl_anno:location(element(2, Expr)),
+ {error,{Loc,?MODULE,"bad term"}};
+ {error, _} = Error ->
+ Error
+ end.
+
+%% From erl_parse.
+normalise({var, _, V}, Bs) ->
+ {value, Value} = erl_eval:binding(V, Bs),
+ Value;
+normalise({char,_,C}, _Bs) -> C;
+normalise({integer,_,I}, _Bs) -> I;
+normalise({float,_,F}, _Bs) -> F;
+normalise({atom,_,A}, _Bs) -> A;
+normalise({string,_,S}, _Bs) -> S;
+normalise({nil,_}, _Bs) -> [];
+normalise({bin,_,Fs}, Bs) ->
+ {value, B, _} =
+ eval_bits:expr_grp(Fs, [],
+ fun(E, _) ->
+ {value, normalise(E, Bs), []}
+ end, [], true),
+ B;
+normalise({cons,_,Head,Tail}, Bs) ->
+ [normalise(Head, Bs)|normalise(Tail, Bs)];
+normalise({tuple,_,Args}, Bs) ->
+ list_to_tuple(normalise_list(Args, Bs));
+normalise({map,_,Pairs}, Bs) ->
+ maps:from_list(lists:map(fun
+ %% only allow '=>'
+ ({map_field_assoc,_,K,V}) ->
+ {normalise(K, Bs),normalise(V, Bs)}
+ end, Pairs));
+%% Special case for unary +/-.
+normalise({op,_,'+',{char,_,I}}, _Bs) -> I;
+normalise({op,_,'+',{integer,_,I}}, _Bs) -> I;
+normalise({op,_,'+',{float,_,F}}, _Bs) -> F;
+normalise({op,_,'-',{char,_,I}}, _Bs) -> -I; %Weird, but compatible!
+normalise({op,_,'-',{integer,_,I}}, _Bs) -> -I;
+normalise({op,_,'-',{float,_,F}}, _Bs) -> -F;
+normalise({'fun',_,{function,{atom,_,M},{atom,_,F},{integer,_,A}}}, _Bs) ->
+ %% Since "#Fun<M.F.A>" is recognized, "fun M:F/A" should be too.
+ fun M:F/A.
+
+normalise_list([H|T], Bs) ->
+ [normalise(H, Bs)|normalise_list(T, Bs)];
+normalise_list([], _Bs) ->
+ [].
+
+%% To be used on ExprList and Bindings returned from extended_parse_exprs().
+%% Substitute {value, A, Item} for {var, A, ExtendedParseVar}.
+%% {value, A, Item} is a shell/erl_eval convention, and for example
+%% the linter cannot handle it.
+
+-spec subst_values_for_vars(ExprList, Bindings) -> [term()] when
+ ExprList :: [erl_parse:abstract_expr()],
+ Bindings :: erl_eval:binding_struct().
+
+subst_values_for_vars({var, A, V}=Var, Bs) ->
+ case erl_eval:binding(V, Bs) of
+ {value, Value} ->
+ {value, A, Value};
+ unbound ->
+ Var
+ end;
+subst_values_for_vars(L, Bs) when is_list(L) ->
+ [subst_values_for_vars(E, Bs) || E <- L];
+subst_values_for_vars(T, Bs) when is_tuple(T) ->
+ list_to_tuple(subst_values_for_vars(tuple_to_list(T), Bs));
+subst_values_for_vars(T, _Bs) ->
+ T.
+
%%% Formatting of exceptions, mfa:s and funs.
%% -> iolist() (no \n at end)
diff --git a/lib/stdlib/src/qlc.erl b/lib/stdlib/src/qlc.erl
index 8c4d835432..20aaa2638c 100644
--- a/lib/stdlib/src/qlc.erl
+++ b/lib/stdlib/src/qlc.erl
@@ -635,14 +635,25 @@ string_to_handle(Str, Options, Bindings) when is_list(Str) ->
badarg ->
erlang:error(badarg, [Str, Options, Bindings]);
[Unique, Cache, MaxLookup, Join, Lookup] ->
- case erl_scan:string(Str) of
+ case erl_scan:string(Str, 1, [text]) of
{ok, Tokens, _} ->
- case erl_parse:parse_exprs(Tokens) of
- {ok, [Expr]} ->
- case qlc_pt:transform_expression(Expr, Bindings) of
+ ScanRes =
+ case lib:extended_parse_exprs(Tokens) of
+ {ok, [Expr0], SBs} ->
+ {ok, Expr0, SBs};
+ {ok, _ExprList, _SBs} ->
+ erlang:error(badarg,
+ [Str, Options, Bindings]);
+ E ->
+ E
+ end,
+ case ScanRes of
+ {ok, Expr, XBs} ->
+ Bs1 = merge_binding_structs(Bindings, XBs),
+ case qlc_pt:transform_expression(Expr, Bs1) of
{ok, {call, _, _QlcQ, Handle}} ->
{value, QLC_lc, _} =
- erl_eval:exprs(Handle, Bindings),
+ erl_eval:exprs(Handle, Bs1),
O = #qlc_opt{unique = Unique,
cache = Cache,
max_lookup = MaxLookup,
@@ -652,8 +663,6 @@ string_to_handle(Str, Options, Bindings) when is_list(Str) ->
{not_ok, [{error, Error} | _]} ->
error(Error)
end;
- {ok, _ExprList} ->
- erlang:error(badarg, [Str, Options, Bindings]);
{error, ErrorInfo} ->
error(ErrorInfo)
end;
@@ -770,6 +779,10 @@ all_selections([{I,Cs} | ICs]) ->
%%% Local functions
%%%
+merge_binding_structs(Bs1, Bs2) ->
+ lists:foldl(fun({N, V}, Bs) -> erl_eval:add_binding(N, V, Bs)
+ end, Bs1, erl_eval:bindings(Bs2)).
+
aux_name1(Name, N, AllNames) ->
SN = name_suffix(Name, N),
case sets:is_element(SN, AllNames) of
@@ -1180,9 +1193,12 @@ abstract1({table, {M, F, As0}}, _NElements, _Depth, Anno)
abstract1({table, TableDesc}, _NElements, _Depth, _A) ->
case io_lib:deep_char_list(TableDesc) of
true ->
- {ok, Tokens, _} = erl_scan:string(lists:flatten(TableDesc++".")),
- {ok, [Expr]} = erl_parse:parse_exprs(Tokens),
- Expr;
+ {ok, Tokens, _} =
+ erl_scan:string(lists:flatten(TableDesc++"."), 1, [text]),
+ {ok, Es, Bs} =
+ lib:extended_parse_exprs(Tokens),
+ [Expr] = lib:subst_values_for_vars(Es, Bs),
+ special(Expr);
false -> % abstract expression
TableDesc
end;
@@ -1210,6 +1226,15 @@ abstract1({list, L}, NElements, Depth, _A) when NElements =:= infinity;
abstract1({list, L}, NElements, Depth, _A) ->
abstract_term(depth(lists:sublist(L, NElements), Depth) ++ '...', 1).
+special({value, _, Thing}) ->
+ abstract_term(Thing);
+special(Tuple) when is_tuple(Tuple) ->
+ list_to_tuple(special(tuple_to_list(Tuple)));
+special([E|Es]) ->
+ [special(E)|special(Es)];
+special(Expr) ->
+ Expr.
+
depth(List, infinity) ->
List;
depth(List, Depth) ->
diff --git a/lib/stdlib/src/shell.erl b/lib/stdlib/src/shell.erl
index 961f5f8a30..76a2789406 100644
--- a/lib/stdlib/src/shell.erl
+++ b/lib/stdlib/src/shell.erl
@@ -229,8 +229,9 @@ server_loop(N0, Eval_0, Bs00, RT, Ds00, History0, Results0) ->
{Eval_1,Bs0,Ds0,Prompt} = prompt(N, Eval_0, Bs00, RT, Ds00),
{Res,Eval0} = get_command(Prompt, Eval_1, Bs0, RT, Ds0),
case Res of
- {ok,Es0} ->
- case expand_hist(Es0, N) of
+ {ok,Es0,XBs} ->
+ Es1 = lib:subst_values_for_vars(Es0, XBs),
+ case expand_hist(Es1, N) of
{ok,Es} ->
{V,Eval,Bs,Ds} = shell_cmd(Es, Eval0, Bs0, RT, Ds0, cmd),
{History,Results} = check_and_get_history_and_results(),
@@ -276,10 +277,10 @@ get_command(Prompt, Eval, Bs, RT, Ds) ->
fun() ->
exit(
case
- io:scan_erl_exprs(group_leader(), Prompt, 1)
+ io:scan_erl_exprs(group_leader(), Prompt, 1, [text])
of
{ok,Toks,_EndPos} ->
- erl_parse:parse_exprs(Toks);
+ lib:extended_parse_exprs(Toks);
{eof,_EndPos} ->
eof;
{error,ErrorInfo,_EndPos} ->
diff --git a/lib/stdlib/test/qlc_SUITE.erl b/lib/stdlib/test/qlc_SUITE.erl
index 2b5d52287e..5e9e03e410 100644
--- a/lib/stdlib/test/qlc_SUITE.erl
+++ b/lib/stdlib/test/qlc_SUITE.erl
@@ -1240,6 +1240,17 @@ string_to_handle(Config) when is_list(Config) ->
{'EXIT', {no_lookup_to_carry_out, _}} =
(catch qlc:e(qlc:string_to_handle(Q, {lookup,true}, Bs2))),
ets:delete(Ets),
+
+ %% References can be scanned and parsed.
+ E2 = ets:new(test, [bag]),
+ Ref = make_ref(),
+ true = ets:insert(E2, [{Ref,Ref}]),
+ S2 = "[{Val1} || {Ref1, Val1} <- ets:table("++io_lib:write(E2)++"),"
+ "Ref1 =:= Ref].",
+ Bs = erl_eval:add_binding('Ref', Ref, erl_eval:new_bindings()),
+ [{Ref}] = qlc:e(qlc:string_to_handle(S2, [], Bs)),
+ ets:delete(E2),
+
ok.
%% table
@@ -4321,7 +4332,18 @@ ets(Config) when is_list(Config) ->
R = qlc:e(Q),
ets:delete(E),
[] = R">>]
- end
+ end,
+
+ <<"E2 = ets:new(test, [bag]),
+ Ref = make_ref(),
+ true = ets:insert(E2, [{Ref,Ref}]),
+ Q2 = qlc:q([{Val1} ||
+ {Ref1, Val1} <- ets:table(E2),
+ Ref1 =:= Ref]),
+ S = qlc:info(Q2),
+ true = is_list(S),
+ [{Ref}] = qlc:e(Q2),
+ ets:delete(E2)">>
],
@@ -7071,7 +7093,7 @@ otp_12946(Config) when is_list(Config) ->
%% Examples from qlc(3).
manpage(Config) when is_list(Config) ->
-
+ dets:start(),
ok = compile_gb_table(Config),
Ts = [
@@ -7138,11 +7160,14 @@ manpage(Config) when is_list(Config) ->
\" [{X,Z}|{W,Y}] <- V2\n\"
\" ])\n\"
\"end\",
- Info =
+ Info1 =
re:replace(qlc:info(Q),
- \"table\\\\(-*[0-9]*\",
+ \"table\\\\(#Ref<[\\.0-9]*>\",
\"table(_\", [{return,list},global]),
- L = Info,
+ F = fun(C) -> C =/= $\n andalso C =/= $\s end,
+ Info = lists:filter(F, Info1),
+ L1 = lists:filter(F, L),
+ L1 = Info,
ets:delete(E1),
ets:delete(E2)">>,
@@ -7445,10 +7470,10 @@ etsc(F, Opts, Objs) ->
V.
join_info(H) ->
- {qlc, S, Options} = strip_qlc_call(H),
+ {{qlc, S, Options}, Bs} = strip_qlc_call2(H),
%% "Hide" the call to qlc_pt from the test in run_test().
LoadedPT = code:is_loaded(qlc_pt),
- QH = qlc:string_to_handle(S, Options),
+ QH = qlc:string_to_handle(S, Options, Bs),
_ = [unload_pt() || false <- [LoadedPT]], % doesn't take long...
case {join_info_count(H), join_info_count(QH)} of
{N, N} ->
@@ -7458,30 +7483,34 @@ join_info(H) ->
end.
strip_qlc_call(H) ->
+ {Expr, _Bs} = strip_qlc_call2(H),
+ Expr.
+
+strip_qlc_call2(H) ->
S = qlc:info(H, {flat, false}),
- {ok, Tokens, _EndLine} = erl_scan:string(S++"."),
- {ok, [Expr]} = erl_parse:parse_exprs(Tokens),
- case Expr of
- {call,_,{remote,_,{atom,_,qlc},{atom,_,q}},[LC]} ->
- {qlc, lists:flatten([erl_pp:expr(LC), "."]), []};
- {call,_,{remote,_,{atom,_,qlc},{atom,_,q}},[LC, Opts]} ->
- {qlc, lists:flatten([erl_pp:expr(LC), "."]),
- erl_parse:normalise(Opts)};
- {call,_,{remote,_,{atom,_,ets},{atom,_,match_spec_run}},_} ->
- {match_spec, Expr};
- {call,_,{remote,_,{atom,_,M},{atom,_,table}},_} ->
- {table, M, Expr};
- _ ->
- []
- end.
+ {ok, Tokens, _EndLine} = erl_scan:string(S++".", 1, [text]),
+ {ok, [Expr], Bs} = lib:extended_parse_exprs(Tokens),
+ {case Expr of
+ {call,_,{remote,_,{atom,_,qlc},{atom,_,q}},[LC]} ->
+ {qlc, lists:flatten([erl_pp:expr(LC), "."]), []};
+ {call,_,{remote,_,{atom,_,qlc},{atom,_,q}},[LC, Opts]} ->
+ {qlc, lists:flatten([erl_pp:expr(LC), "."]),
+ erl_parse:normalise(Opts)};
+ {call,_,{remote,_,{atom,_,ets},{atom,_,match_spec_run}},_} ->
+ {match_spec, Expr};
+ {call,_,{remote,_,{atom,_,M},{atom,_,table}},_} ->
+ {table, M, Expr};
+ _ ->
+ []
+ end, Bs}.
-record(ji, {nmerge = 0, nlookup = 0, nnested_loop = 0, nkeysort = 0}).
%% Counts join options and (all) calls to qlc:keysort().
join_info_count(H) ->
S = qlc:info(H, {flat, false}),
- {ok, Tokens, _EndLine} = erl_scan:string(S++"."),
- {ok, [Expr]} = erl_parse:parse_exprs(Tokens),
+ {ok, Tokens, _EndLine} = erl_scan:string(S++".", 1, [text]),
+ {ok, [Expr], _Bs} = lib:extended_parse_exprs(Tokens),
#ji{nmerge = Nmerge, nlookup = Nlookup,
nkeysort = NKeysort, nnested_loop = Nnested_loop} =
ji(Expr, #ji{}),
@@ -7524,8 +7553,8 @@ lookup_keys({list,Q,_}, L) ->
lookup_keys({generate,_,Q}, L) ->
lookup_keys(Q, L);
lookup_keys({table,Chars}, L) when is_list(Chars) ->
- {ok, Tokens, _} = erl_scan:string(lists:flatten(Chars++".")),
- {ok, [Expr]} = erl_parse:parse_exprs(Tokens),
+ {ok, Tokens, _} = erl_scan:string(lists:flatten(Chars++"."), 1, [text]),
+ {ok, [Expr], _Bs} = lib:extended_parse_exprs(Tokens),
case Expr of
{call,_,_,[_fun,AKs]} ->
case erl_parse:normalise(AKs) of
@@ -7842,7 +7871,7 @@ run_test(Config, Extra, {cres, Body, Opts, ExpectedCompileReturn}) ->
{module, _} = code:load_abs(AbsFile, Mod),
Ms0 = erlang:process_info(self(),messages),
- Before = {{get(), ets:all(), Ms0}, pps()},
+ Before = {{get(), lists:sort(ets:all()), Ms0}, pps()},
%% Prepare the check that the qlc module does not call qlc_pt.
_ = [unload_pt() || {file, Name} <- [code:is_loaded(qlc_pt)],
@@ -7874,7 +7903,7 @@ run_test(Config, Extra, Body) ->
wait_for_expected(R, {Strict0,PPS0}=Before, SourceFile, Wait) ->
Ms = erlang:process_info(self(),messages),
- After = {_,PPS1} = {{get(), ets:all(), Ms}, pps()},
+ After = {_,PPS1} = {{get(), lists:sort(ets:all()), Ms}, pps()},
case {R, After} of
{ok, Before} ->
ok;
diff --git a/lib/stdlib/test/shell_SUITE.erl b/lib/stdlib/test/shell_SUITE.erl
index 56002dda25..99411bc8fd 100644
--- a/lib/stdlib/test/shell_SUITE.erl
+++ b/lib/stdlib/test/shell_SUITE.erl
@@ -31,7 +31,7 @@
progex_lc/1, progex_funs/1,
otp_5990/1, otp_6166/1, otp_6554/1,
otp_7184/1, otp_7232/1, otp_8393/1, otp_10302/1, otp_13719/1,
- otp_14285/1]).
+ otp_14285/1, otp_14296/1]).
-export([ start_restricted_from_shell/1,
start_restricted_on_command_line/1,restricted_local/1]).
@@ -92,7 +92,7 @@ groups() ->
progex_funs]},
{tickets, [],
[otp_5990, otp_6166, otp_6554, otp_7184,
- otp_7232, otp_8393, otp_10302, otp_13719, otp_14285]}].
+ otp_7232, otp_8393, otp_10302, otp_13719, otp_14285, otp_14296]}].
init_per_suite(Config) ->
Config.
@@ -2841,6 +2841,95 @@ otp_14285(Config) ->
test_server:stop_node(Node),
ok.
+otp_14296(Config) when is_list(Config) ->
+ fun() ->
+ F = fun() -> a end,
+ LocalFun = term_to_string(F),
+ S = LocalFun ++ ".",
+ "1: syntax error before: Fun" = comm_err(S)
+ end(),
+
+ fun() ->
+ F = fun mod:func/1,
+ ExternalFun = term_to_string(F),
+ S = ExternalFun ++ ".",
+ R = ExternalFun ++ ".\n",
+ R = t(S)
+ end(),
+
+ fun() ->
+ UnknownPid = "<100000.0.0>",
+ S = UnknownPid ++ ".",
+ "1: syntax error before: '<'" = comm_err(S)
+ end(),
+
+ fun() ->
+ KnownPid = term_to_string(self()),
+ S = KnownPid ++ ".",
+ R = KnownPid ++ ".\n",
+ R = t(S)
+ end(),
+
+ fun() ->
+ Port = open_port({spawn, "ls"}, [line]),
+ KnownPort = erlang:port_to_list(Port),
+ S = KnownPort ++ ".",
+ R = KnownPort ++ ".\n",
+ R = t(S)
+ end(),
+
+ fun() ->
+ UnknownPort = "#Port<100000.0>",
+ S = UnknownPort ++ ".",
+ "1: syntax error before: Port" = comm_err(S)
+ end(),
+
+ fun() ->
+ UnknownRef = "#Ref<100000.0.0.0>",
+ S = UnknownRef ++ ".",
+ "1: syntax error before: Ref" = comm_err(S)
+ end(),
+
+ fun() ->
+ KnownRef = term_to_string(make_ref()),
+ S = KnownRef ++ ".",
+ R = KnownRef ++ ".\n",
+ R = t(S)
+ end(),
+
+ %% Test lib:extended_parse_term/1
+ TF = fun(S) ->
+ {ok, Ts, _} = erl_scan:string(S++".", 1, [text]),
+ case lib:extended_parse_term(Ts) of
+ {ok, Term} -> Term;
+ {error, _}=Error -> Error
+ end
+ end,
+ Fun = fun m:f/1,
+ Fun = TF(term_to_string(Fun)),
+ Fun = TF("fun m:f/1"),
+ Pid = self(),
+ Pid = TF(term_to_string(Pid)),
+ Ref = make_ref(),
+ Ref = TF(term_to_string(Ref)),
+ Term = {[10, a], {"foo", []}, #{x => <<"bar">>}},
+ Term = TF(lists:flatten(io_lib:format("~p", [Term]))),
+ {$a, F1, "foo"} = TF("{$a, 1.0, \"foo\"}"),
+ true = is_float(F1),
+ 3 = TF("+3"),
+ $a = TF("+$a"),
+ true = is_float(TF("+1.0")),
+ true = -3 =:= TF("-3"),
+ true = -$a =:= TF("-$a"),
+ true = is_float(TF("-1.0")),
+ {error, {_, _, ["syntax error"++_|_]}} = TF("{1"),
+ {error, {_,_,"bad term"}} = TF("fun() -> foo end"),
+ {error, {_,_,"bad term"}} = TF("1, 2"),
+ ok.
+
+term_to_string(T) ->
+ lists:flatten(io_lib:format("~w", [T])).
+
scan(B) ->
F = fun(Ts) ->
case erl_parse:parse_term(Ts) of
diff --git a/lib/stdlib/test/sofs_SUITE.erl b/lib/stdlib/test/sofs_SUITE.erl
index f67bf16f0f..39e56c6df6 100644
--- a/lib/stdlib/test/sofs_SUITE.erl
+++ b/lib/stdlib/test/sofs_SUITE.erl
@@ -1783,7 +1783,7 @@ multiple_relative_product(Conf) when is_list(Conf) ->
ok.
digraph(Conf) when is_list(Conf) ->
- T0 = ets:all(),
+ T0 = lists:sort(ets:all()),
E = empty_set(),
R = relation([{a,b},{b,c},{c,d},{d,a}]),
F = relation_to_family(R),
@@ -1833,7 +1833,7 @@ digraph(Conf) when is_list(Conf) ->
true -> ok
end,
- true = T0 == ets:all(),
+ true = T0 == lists:sort(ets:all()),
ok.
digraph_fail(ExitReason, Fail) ->
diff --git a/system/doc/efficiency_guide/processes.xml b/system/doc/efficiency_guide/processes.xml
index afa4325d8e..3b64c863ff 100644
--- a/system/doc/efficiency_guide/processes.xml
+++ b/system/doc/efficiency_guide/processes.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>2001</year><year>2016</year>
+ <year>2001</year><year>2017</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -222,7 +222,7 @@ kilo_byte(N, Acc) ->
<pre>
4> <input>T = ets:new(tab, []).</input>
-17
+#Ref&lt;0.1662103692.2407923716.214181>
5> <input>ets:insert(T, {key,efficiency_guide:kilo_byte()}).</input>
true
6> <input>erts_debug:size(element(2, hd(ets:lookup(T, key)))).</input>