introspection.enum_ source code

1 module introspection.enum_;
2 
3 import std.traits;
4 import std..string;
5 
6 import introspection.type;
7 import introspection.location;
8 import introspection.protection;
9 
10 version(unittest) {
11   import fluent.asserts;
12 }
13 
14 ///
15 struct EnumMember {
16   ///
17   string name;
18 
19   ///
20   string value;
21 }
22 
23 /// Stores information about enums
24 struct Enum {
25   ///
26   string name;
27 
28   ///
29   Type type;
30 
31   ///
32   EnumMember[] members;
33 
34   ///
35   Location location;
36 
37   ///
38   Protection protection;
39 }
40 
41 ////
42 Enum describeEnum(T)() if(is(T == enum)){
43   Enum enum_;
44 
45   enum_.name = T.stringof;
46 
47   static foreach (i, member; EnumMembers!T) {
48     enum_.members ~= EnumMember(__traits(identifier, EnumMembers!T[i]), member.stringof);
49   }
50 
51   enum_.type = describeType!T;
52 
53   auto location = __traits(getLocation, T);
54 
55   enum_.location = Location(location[0], location[1], location[2]);
56   enum_.protection = __traits(getProtection, T).toProtection;
57 
58   return enum_;
59 }
60 
61 /// it should describe an enum
62 unittest {
63   enum Type : string {
64     a = "A", b = "B", c = "C"
65   }
66 
67   auto result = describeEnum!(Type);
68 
69   result.name.should.equal("Type");
70 
71   result.type.name.should.equal("Type");
72   result.type.isEnum.should.equal(true);
73 
74   result.members.length.should.equal(3);
75   result.members[0].name.should.equal("a");
76   result.members[0].value.should.equal(`"A"`);
77 
78   result.location.file.should.equal("source/introspection/enum_.d");
79   result.location.line.should.be.greaterThan(0);
80   result.location.column.should.equal(3);
81 
82   result.protection.should.equal(Protection.public_);
83 }