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comparison qt/qtd/MetaMarshall.d @ 288:f9559a957be9 signals

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new signals and slots implementation
author eldar
date Sun, 08 Nov 2009 19:28:01 +0000
parents
children 19498f420252
comparison
equal deleted inserted replaced
287:b6984b290e46 288:f9559a957be9
1 module qt.qtd.MetaMarshall;
2
3 import std.traits;
4
5 template isQObjectType(T) // is a QObject type that belongs to the library
6 {
7 enum isQObjectType = is(typeof(mixin("T." ~ "__isQObjectType")));
8 }
9
10 template isObjectType(T) // is a QObject type that belongs to the library
11 {
12 enum isQObjectType = is(typeof(mixin("T." ~ "__isObjectType")));
13 }
14
15 template isValueType(T) // is a QObject type that belongs to the library
16 {
17 enum isQObjectType = is(typeof(mixin("T." ~ "__isValueType")));
18 }
19
20 template isNativeType(T) // type that doesn't require conversion i.e. is the same in C++ and D
21 {
22 enum isNativeType = isNumeric!T || is(T == bool);
23 }
24
25 // converts an argumnent from C++ to D in qt_metacall
26 string metaCallArgument(T)(string ptr)
27 {
28 static if (isQObjectType!T)
29 return T.stringof ~ ".__getObject(*cast(void**)(" ~ ptr ~ "))";
30 else static if (isNativeType!T)
31 return "*(cast(" ~ T.stringof ~ "*)" ~ ptr ~ ")";
32 else
33 return "*(cast(" ~ T.stringof ~ "*)" ~ ptr ~ ")";
34 //res = T.stringof;
35 }
36
37 // converts a D argument type to C++ for registering in Qt meta system
38 string qtDeclArg(T)()
39 {
40 static if (isQObjectType!T)
41 return T.stringof ~ "*";
42 else static if (isNativeType!T)
43 return T.stringof;
44 else
45 return T.stringof;
46 }
47
48 // converts an argument from D to C++ in a signal emitter
49 string convertSignalArgument(T)(string arg)
50 {
51 static if (isQObjectType!T)
52 return arg ~ ".__nativeId";
53 else static if (isNativeType!T)
54 return arg;
55 else
56 return arg;
57 }