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| author | Magnus Lång <[email protected]> | 2016-02-27 17:56:22 +0100 |
|---|---|---|
| committer | Hans Bolinder <[email protected]> | 2016-04-28 16:14:24 +0200 |
| commit | 252df5612032cfba71285b5886937e88ba176529 (patch) | |
| tree | f44ae2d8b8259865111cc47807b18289e096235a /lib/dialyzer/test/small_SUITE_data | |
| parent | ac2f1c71d5b5169d49a5cd5fd73d28a702a58024 (diff) | |
| download | otp-252df5612032cfba71285b5886937e88ba176529.tar.gz otp-252df5612032cfba71285b5886937e88ba176529.tar.bz2 otp-252df5612032cfba71285b5886937e88ba176529.zip | |
erl_types: Add a map type representation
The type of a map is represented as a three-tuple {Pairs, DefaultKey,
DefaultValue}. DefaultKey and DefaultValue are types. Pairs is a list of
three-tuples {Key, mandatory | optional, Value}, where Key and Value are
types. All types Key must be singleton, or "known at compile time," as
the EEP put it. Examples:
#{integer()=>list()} {[], integer(), list()}
#{a=>char(), b=>atom()} {[{a, optional, char()},
{b, optional, atom()}],
none(), none()}
map() {[], any(), any()}
A more formal description of the representation and its invariants can
be found in erl_types.erl
Special thanks to Daniel S. McCain (@dsmccain) that co-authored a very
early version of this with me back in April 2014, although only the
singleton type logic remains from that version.
Diffstat (limited to 'lib/dialyzer/test/small_SUITE_data')
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/results/maps1 | 6 | ||||
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/results/maps_sum | 2 | ||||
| -rw-r--r-- | lib/dialyzer/test/small_SUITE_data/src/maps1.erl | 2 |
3 files changed, 7 insertions, 3 deletions
diff --git a/lib/dialyzer/test/small_SUITE_data/results/maps1 b/lib/dialyzer/test/small_SUITE_data/results/maps1 index e88c91f21f..773f037c47 100644 --- a/lib/dialyzer/test/small_SUITE_data/results/maps1 +++ b/lib/dialyzer/test/small_SUITE_data/results/maps1 @@ -1,4 +1,8 @@ +maps1.erl:20: Function recv/3 has no local return +maps1.erl:25: Function decode/1 has no local return +maps1.erl:31: Function t1/0 has no local return +maps1.erl:40: Function update/2 has no local return maps1.erl:43: Function t3/0 has no local return -maps1.erl:44: The call maps1:foo(~{'greger'=>3, ~{'arne'=>'anka'}~=>45}~,1) will never return since it differs in the 2nd argument from the success typing arguments: (#{},'b') +maps1.erl:46: Function foo/2 has no local return maps1.erl:52: The call Mod:'function'(~{'literal'=>'map'}~,'another_arg') requires that Mod is of type atom() not #{} diff --git a/lib/dialyzer/test/small_SUITE_data/results/maps_sum b/lib/dialyzer/test/small_SUITE_data/results/maps_sum index a19c0bba96..bd192bdb93 100644 --- a/lib/dialyzer/test/small_SUITE_data/results/maps_sum +++ b/lib/dialyzer/test/small_SUITE_data/results/maps_sum @@ -1,4 +1,4 @@ -maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (#{}) -> any() +maps_sum.erl:15: Invalid type specification for function maps_sum:wrong1/1. The success typing is (map()) -> any() maps_sum.erl:26: Function wrong2/1 has no local return maps_sum.erl:27: The call lists:foldl(fun((_,_,_) -> any()),0,Data::any()) will never return since it differs in the 1st argument from the success typing arguments: (fun((_,_) -> any()),any(),[any()]) diff --git a/lib/dialyzer/test/small_SUITE_data/src/maps1.erl b/lib/dialyzer/test/small_SUITE_data/src/maps1.erl index bb2f66a498..597358d16a 100644 --- a/lib/dialyzer/test/small_SUITE_data/src/maps1.erl +++ b/lib/dialyzer/test/small_SUITE_data/src/maps1.erl @@ -21,7 +21,7 @@ recv(Packet, Fun, Chan) -> #{id := Can_id, data := Can_data} = P = decode(Packet), Fun(P). --spec decode(<<_:64,_:_*8>>) -> #{id => <<_:11>>,timestamp => char()}. +-spec decode(<<_:64,_:_*8>>) -> #{id => <<_:11>>,timestamp => char(),_ => _}. decode(<<_:12, Len:4, Timestamp:16, 0:3, Id:11/bitstring, 0:18, Data:Len/binary, _/binary>>) -> #{id => Id, data => Data, timestamp => Timestamp}. |