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288
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1 module qt.qtd.MetaMarshall;
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2
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3 import std.traits;
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4
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302
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5 // shouldn't be here
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6
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7 string __toString(long v)
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8 {
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9 if (v == 0)
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10 return "0";
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11
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12 string ret;
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13
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14 bool neg;
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15 if (v < 0)
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16 {
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17 neg = true;
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18 v = -v;
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19 }
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20
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21 while (v != 0)
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22 {
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23 ret = cast(char)(v % 10 + '0') ~ ret;
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24 v = cast(long)(v / 10);
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25 }
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26
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27 if (neg)
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28 ret = "-" ~ ret;
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29
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30 return ret;
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31 }
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32
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288
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33 template isQObjectType(T) // is a QObject type that belongs to the library
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34 {
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292
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35 enum isQObjectType = is(T.__isQObjectType);
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288
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36 }
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37
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293
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38 template isObjectType(T) // is a Qt Object type that belongs to the library
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288
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39 {
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292
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40 enum isObjectType = is(T.__isObjectType);
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288
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41 }
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42
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293
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43 template isValueType(T) // is a Qt Value type that belongs to the library
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288
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44 {
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293
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45 enum isValueType = is(T.__isValueType);
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288
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46 }
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47
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48 template isNativeType(T) // type that doesn't require conversion i.e. is the same in C++ and D
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49 {
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302
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50 enum isNativeType = isNumeric!T || is(T == bool) || is(T == struct);
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51 }
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52
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53 template isStringType(T) // string type
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54 {
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55 enum isStringType = is(T == string);
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288
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56 }
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57
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58 // converts an argumnent from C++ to D in qt_metacall
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59 string metaCallArgument(T)(string ptr)
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60 {
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303
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61 static if (isQObjectType!T || isObjectType!T)
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288
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62 return T.stringof ~ ".__getObject(*cast(void**)(" ~ ptr ~ "))";
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63 else static if (isNativeType!T)
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64 return "*(cast(" ~ T.stringof ~ "*)" ~ ptr ~ ")";
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302
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65 else static if (isStringType!T)
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66 return "QStringUtil.toNativeString(" ~ ptr ~ ")";
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288
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67 else
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68 return "*(cast(" ~ T.stringof ~ "*)" ~ ptr ~ ")";
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69 //res = T.stringof;
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70 }
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71
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72 // converts a D argument type to C++ for registering in Qt meta system
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73 string qtDeclArg(T)()
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74 {
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303
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75 static if (isQObjectType!T || isObjectType!T)
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288
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76 return T.stringof ~ "*";
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302
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77 else static if (isStringType!T)
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78 return "QString";
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288
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79 else static if (isNativeType!T)
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302
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80 return Unqual!T.stringof;
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288
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81 else
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82 return T.stringof;
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83 }
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84
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85 // converts an argument from D to C++ in a signal emitter
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86 string convertSignalArgument(T)(string arg)
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87 {
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303
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88 static if (isQObjectType!T || isObjectType!T)
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288
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89 return arg ~ ".__nativeId";
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302
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90 else static if (isStringType!T)
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91 return "_qt" ~ arg;
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288
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92 else static if (isNativeType!T)
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93 return arg;
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94 else
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95 return arg;
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96 }
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302
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97
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98 string prepareSignalArguments(Args...)()
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99 {
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100 string res;
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101 foreach(i, _; Args)
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102 static if (isStringType!(Args[i]))
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103 res ~= "auto _qt_t" ~ __toString(i) ~ " = QString(_t" ~ __toString(i) ~ ");\n";
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104 return res;
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105 }
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