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| author | Lukas Larsson <[email protected]> | 2017-10-12 15:55:04 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2017-11-20 09:57:46 +0100 |
| commit | f1666d981aab4e4cf94b91dc097675fa0b056c97 (patch) | |
| tree | 3a592f71441ba7a750d430b73c0a8d696c5c7978 /lib/stdlib | |
| parent | a1c796e7f6b86b4b506492ae6354382c565278d1 (diff) | |
| download | otp-f1666d981aab4e4cf94b91dc097675fa0b056c97.tar.gz otp-f1666d981aab4e4cf94b91dc097675fa0b056c97.tar.bz2 otp-f1666d981aab4e4cf94b91dc097675fa0b056c97.zip | |
stdlib: Make io_lib and io_lib_pretty use maps iterator
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/src/io_lib.erl | 13 | ||||
| -rw-r--r-- | lib/stdlib/src/io_lib_pretty.erl | 12 | ||||
| -rw-r--r-- | lib/stdlib/test/io_SUITE.erl | 4 |
3 files changed, 25 insertions, 4 deletions
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl index 9d447418f8..3c8430b820 100644 --- a/lib/stdlib/src/io_lib.erl +++ b/lib/stdlib/src/io_lib.erl @@ -963,7 +963,18 @@ limit_tail(Other, D) -> %% maps:from_list() creates a map with the same internal ordering of %% the selected associations as in Map. limit_map(Map, D) -> - maps:from_list(erts_internal:maps_to_list(Map, D)). + limit_map(maps:iterator(Map), D, []). + +limit_map(_I, 0, Acc) -> + maps:from_list(Acc); +limit_map(I, D, Acc) -> + case maps:next(I) of + {K, V, NextI} -> + limit_map(NextI, D-1, [{K,V} | Acc]); + none -> + maps:from_list(Acc) + end. + %% maps:from_list(limit_map_body(erts_internal:maps_to_list(Map, D), D)). %% limit_map_body(_, 0) -> [{'...', '...'}]; diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl index 505613b80e..89e1931d2d 100644 --- a/lib/stdlib/src/io_lib_pretty.erl +++ b/lib/stdlib/src/io_lib_pretty.erl @@ -478,9 +478,19 @@ 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(erts_internal:maps_to_list(Map, D), D, RF, Enc, Str), + Pairs = print_length_map_pairs(limit_map(maps:iterator(Map), D, []), D, RF, Enc, Str), {{map, Pairs}, list_length(Pairs, 3)}. +limit_map(_I, 0, Acc) -> + Acc; +limit_map(I, D, Acc) -> + case maps:next(I) of + {K, V, NextI} -> + limit_map(NextI, D-1, [{K,V} | Acc]); + none -> + Acc + end. + print_length_map_pairs([], _D, _RF, _Enc, _Str) -> []; print_length_map_pairs(_Pairs, 1, _RF, _Enc, _Str) -> diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index e2c73371cd..13929bdbb6 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -2138,8 +2138,8 @@ otp_14175(_Config) -> "#{}" = p(#{}, 1), "#{...}" = p(#{a => 1}, 1), "#{#{} => a}" = p(#{#{} => a}, 2), - "#{a => 1,...}" = p(#{a => 1, b => 2}, 2), - "#{a => 1,b => 2}" = p(#{a => 1, b => 2}, -1), + mt("#{a => 1,...}", p(#{a => 1, b => 2}, 2)), + mt("#{a => 1,b => 2}", p(#{a => 1, b => 2}, -1)), M = #{kaaaaaaaaaaaaaaaaaaa => v1,kbbbbbbbbbbbbbbbbbbb => v2, kccccccccccccccccccc => v3,kddddddddddddddddddd => v4, |