diff options
Diffstat (limited to 'lib/stdlib/src')
| -rw-r--r-- | lib/stdlib/src/io_lib_pretty.erl | 131 |
1 files changed, 118 insertions, 13 deletions
diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl index 16ca2f41dc..ba2cffdcb3 100644 --- a/lib/stdlib/src/io_lib_pretty.erl +++ b/lib/stdlib/src/io_lib_pretty.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. @@ -128,6 +128,10 @@ max_cs(M, _Len) -> M. -define(ATM(T), is_list(element(1, T))). +-define(ATM_PAIR(Pair), + ?ATM(element(2, element(1, Pair))) % Key + andalso + ?ATM(element(3, element(1, Pair)))). % Value -define(ATM_FLD(Field), ?ATM(element(4, element(1, Field)))). pp({_S, Len} = If, Col, Ll, M, _TInd, _Ind, LD, W) @@ -140,9 +144,8 @@ pp({{tuple,true,L}, _Len}, Col, Ll, M, TInd, Ind, LD, W) -> pp({{tuple,false,L}, _Len}, Col, Ll, M, TInd, Ind, LD, W) -> [${, pp_list(L, Col + 1, Ll, M, TInd, indent(1, Ind), LD, $,, W + 1), $}]; pp({{map,Pairs},_Len}, Col, Ll, M, TInd, Ind, LD, W) -> - [$#,${, pp_list(Pairs, Col + 2, Ll, M, TInd, indent(2, Ind), LD, $,, W + 1), $}]; -pp({{map_pair,K,V},_Len}, Col, Ll, M, TInd, Ind, LD, W) -> - [pp(K, Col, Ll, M, TInd, Ind, LD, W), " => ", pp(V, Col, Ll, M, TInd, Ind, LD, W)]; + [$#, ${, pp_map(Pairs, Col + 2, Ll, M, TInd, indent(2, Ind), LD, W + 1), + $}]; pp({{record,[{Name,NLen} | L]}, _Len}, Col, Ll, M, TInd, Ind, LD, W) -> [Name, ${, pp_record(L, NLen, Col, Ll, M, TInd, Ind, LD, W + NLen+1), $}]; pp({{bin,S}, _Len}, Col, Ll, M, _TInd, Ind, LD, W) -> @@ -166,6 +169,46 @@ pp_tag_tuple([{Tag,Tlen} | L], Col, Ll, M, TInd, Ind, LD, W) -> [Tag, S | pp_list(L, Tcol, Ll, M, TInd, Indent, LD, S, W+Tlen+1)] end. +pp_map([], _Col, _Ll, _M, _TInd, _Ind, _LD, _W) -> + ""; +pp_map({dots, _}, _Col, _Ll, _M, _TInd, _Ind, _LD, _W) -> + "..."; +pp_map([P | Ps], Col, Ll, M, TInd, Ind, LD, W) -> + {PS, PW} = pp_pair(P, Col, Ll, M, TInd, Ind, last_depth(Ps, LD), W), + [PS | pp_pairs_tail(Ps, Col, Col + PW, Ll, M, TInd, Ind, LD, PW)]. + +pp_pairs_tail([], _Col0, _Col, _Ll, _M, _TInd, _Ind, _LD, _W) -> + ""; +pp_pairs_tail({dots, _}, _Col0, _Col, _M, _Ll, _TInd, _Ind, _LD, _W) -> + ",..."; +pp_pairs_tail([{_, Len}=P | Ps], Col0, Col, Ll, M, TInd, Ind, LD, W) -> + LD1 = last_depth(Ps, LD), + ELen = 1 + Len, + if + LD1 =:= 0, ELen + 1 < Ll - Col, W + ELen + 1 =< M, ?ATM_PAIR(P); + LD1 > 0, ELen < Ll - Col - LD1, W + ELen + LD1 =< M, ?ATM_PAIR(P) -> + [$,, write_pair(P) | + pp_pairs_tail(Ps, Col0, Col+ELen, Ll, M, TInd, Ind, LD, W+ELen)]; + true -> + {PS, PW} = pp_pair(P, Col0, Ll, M, TInd, Ind, LD1, 0), + [$,, $\n, Ind, PS | + pp_pairs_tail(Ps, Col0, Col0 + PW, Ll, M, TInd, Ind, LD, PW)] + end. + +pp_pair({_, Len}=Pair, Col, Ll, M, _TInd, _Ind, LD, W) + when Len < Ll - Col - LD, Len + W + LD =< M -> + {write_pair(Pair), if + ?ATM_PAIR(Pair) -> + Len; + true -> + Ll % force nl + end}; +pp_pair({{map_pair, K, V}, _Len}, Col0, Ll, M, TInd, Ind0, LD, W) -> + I = map_value_indent(TInd), + Ind = indent(I, Ind0), + {[pp(K, Col0, Ll, M, TInd, Ind0, LD, W), " =>\n", + Ind | pp(V, Col0 + I, Ll, M, TInd, Ind, LD, 0)], Ll}. % force nl + pp_record([], _Nlen, _Col, _Ll, _M, _TInd, _Ind, _LD, _W) -> ""; pp_record({dots, _}, _Nlen, _Col, _Ll, _M, _TInd, _Ind, _LD, _W) -> @@ -204,7 +247,11 @@ pp_field({_, Len}=Fl, Col, Ll, M, _TInd, _Ind, LD, W) end}; pp_field({{field, Name, NameL, F}, _Len}, Col0, Ll, M, TInd, Ind0, LD, W0) -> {Col, Ind, S, W} = rec_indent(NameL, TInd, Col0, Ind0, W0 + NameL), - {[Name, " = ", S | pp(F, Col, Ll, M, TInd, Ind, LD, W)], Ll}. % force nl + Sep = case S of + [$\n | _] -> " ="; + _ -> " = " + end, + {[Name, Sep, S | pp(F, Col, Ll, M, TInd, Ind, LD, W)], Ll}. % force nl rec_indent(RInd, TInd, Col0, Ind0, W0) -> Nl = (TInd > 0) and (RInd > TInd), @@ -291,8 +338,8 @@ write({{list, L}, _}) -> [$[, write_list(L, $|), $]]; write({{map, Pairs}, _}) -> [$#,${, write_list(Pairs, $,), $}]; -write({{map_pair, K, V}, _}) -> - [write(K)," => ",write(V)]; +write({{map_pair, _K, _V}, _}=Pair) -> + write_pair(Pair); write({{record, [{Name,_} | L]}, _}) -> [Name, ${, write_fields(L), $}]; write({{bin, S}, _}) -> @@ -300,6 +347,9 @@ write({{bin, S}, _}) -> write({S, _}) -> S. +write_pair({{map_pair, K, V}, _}) -> + [write(K), " => ", write(V)]. + write_fields([]) -> ""; write_fields({dots, _}) -> @@ -333,7 +383,7 @@ write_tail(E, S) -> %% The depth (D) is used for extracting and counting the characters to %% print. The structure is kept so that the returned intermediate -%% format can be formatted. The separators (list, tuple, record) are +%% format can be formatted. The separators (list, tuple, record, map) are %% counted but need to be added later. %% D =/= 0 @@ -406,21 +456,32 @@ print_length(Term, _D, _RF, _Enc, _Str) -> print_length_map(_Map, 1, _RF, _Enc, _Str) -> {"#{...}", 6}; print_length_map(Map, D, RF, Enc, Str) when is_map(Map) -> - Pairs = print_length_map_pairs(maps:to_list(Map), D, RF, Enc, Str), + Pairs = print_length_map_pairs(maps_to_list(Map, D), D, RF, Enc, Str), {{map, Pairs}, list_length(Pairs, 3)}. +maps_to_list(Map, D) when D < 0; map_size(Map) =< D -> + maps:to_list(Map); +maps_to_list(Map, D) -> + F = fun(_K, _V, {N, L}) when N =:= D -> + throw(L); + (K, V, {N, L}) -> + {N+1, [{K, V} | L]} + end, + lists:reverse(catch maps:fold(F, {0, []}, Map)). + print_length_map_pairs([], _D, _RF, _Enc, _Str) -> []; print_length_map_pairs(_Pairs, 1, _RF, _Enc, _Str) -> {dots, 3}; -print_length_map_pairs([{K,V}|Pairs], D, RF, Enc, Str) -> - [print_length_map_pair(K,V,D-1,RF,Enc,Str) | - print_length_map_pairs(Pairs,D-1,RF,Enc,Str)]. +print_length_map_pairs([{K, V} | Pairs], D, RF, Enc, Str) -> + [print_length_map_pair(K, V, D - 1, RF, Enc, Str) | + print_length_map_pairs(Pairs, D - 1, RF, Enc, Str)]. print_length_map_pair(K, V, D, RF, Enc, Str) -> {KS, KL} = print_length(K, D, RF, Enc, Str), {VS, VL} = print_length(V, D, RF, Enc, Str), - {{map_pair, {KS,KL}, {VS,VL}}, KL + VL}. + KL1 = KL + 4, + {{map_pair, {KS, KL1}, {VS, VL}}, KL1 + VL}. print_length_tuple(_Tuple, 1, _RF, _Enc, _Str) -> {"{...}", 5}; @@ -612,6 +673,8 @@ cind({{tuple,true,L}, _Len}, Col, Ll, M, Ind, LD, W) -> cind_tag_tuple(L, Col, Ll, M, Ind, LD, W + 1); cind({{tuple,false,L}, _Len}, Col, Ll, M, Ind, LD, W) -> cind_list(L, Col + 1, Ll, M, Ind, LD, W + 1); +cind({{map,Pairs},_Len}, Col, Ll, M, Ind, LD, W) -> + cind_map(Pairs, Col + 2, Ll, M, Ind, LD, W + 2); cind({{record,[{_Name,NLen} | L]}, _Len}, Col, Ll, M, Ind, LD, W) -> cind_record(L, NLen, Col, Ll, M, Ind, LD, W + NLen + 1); cind({{bin,_S}, _Len}, _Col, _Ll, _M, Ind, _LD, _W) -> @@ -637,6 +700,48 @@ cind_tag_tuple([{_Tag,Tlen} | L], Col, Ll, M, Ind, LD, W) -> throw(no_good) end. +cind_map([P | Ps], Col, Ll, M, Ind, LD, W) -> + PW = cind_pair(P, Col, Ll, M, Ind, last_depth(Ps, LD), W), + cind_pairs_tail(Ps, Col, Col + PW, Ll, M, Ind, LD, W + PW); +cind_map(_, _Col, _Ll, _M, Ind, _LD, _W) -> + Ind. + +cind_pairs_tail([{_, Len}=P | Ps], Col0, Col, Ll, M, Ind, LD, W) -> + LD1 = last_depth(Ps, LD), + ELen = 1 + Len, + if + LD1 =:= 0, ELen + 1 < Ll - Col, W + ELen + 1 =< M, ?ATM_PAIR(P); + LD1 > 0, ELen < Ll - Col - LD1, W + ELen + LD1 =< M, ?ATM_PAIR(P) -> + cind_pairs_tail(Ps, Col0, Col + ELen, Ll, M, Ind, LD, W + ELen); + true -> + PW = cind_pair(P, Col0, Ll, M, Ind, LD1, 0), + cind_pairs_tail(Ps, Col0, Col0 + PW, Ll, M, Ind, LD, PW) + end; +cind_pairs_tail(_, _Col0, _Col, _Ll, _M, Ind, _LD, _W) -> + Ind. + +cind_pair({{map_pair, _Key, _Value}, Len}=Pair, Col, Ll, M, _Ind, LD, W) + when Len < Ll - Col - LD, Len + W + LD =< M -> + if + ?ATM_PAIR(Pair) -> + Len; + true -> + Ll + end; +cind_pair({{map_pair, K, V}, _Len}, Col0, Ll, M, Ind, LD, W0) -> + cind(K, Col0, Ll, M, Ind, LD, W0), + I = map_value_indent(Ind), + cind(V, Col0 + I, Ll, M, Ind, LD, 0), + Ll. + +map_value_indent(TInd) -> + case TInd > 0 of + true -> + TInd; + false -> + 4 + end. + cind_record([F | Fs], Nlen, Col0, Ll, M, Ind, LD, W0) -> Nind = Nlen + 1, {Col, W} = cind_rec(Nind, Col0, Ll, M, Ind, W0), |