Mercurial > projects > qtd
annotate d2/qtd/Signal.d @ 367:f69341b40588
Removed dependencies on qtd.Traits
author | Max Samukha <maxter@spambox.com> |
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date | Thu, 24 Jun 2010 13:47:30 +0300 |
parents | da4235301224 |
children | a032df77b6ab |
rev | line source |
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1 | 1 /** |
2 * | |
3 * Copyright: Copyright QtD Team, 2008-2009 | |
4 * Authors: Max Samukha, Eldar Insafutdinov | |
5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a> | |
6 * | |
7 * Copyright QtD Team, 2008-2009 | |
8 * Distributed under the Boost Software License, Version 1.0. | |
9 * (See accompanying file boost-license-1.0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
10 * | |
11 */ | |
344 | 12 module qtd.Signal; |
1 | 13 |
14 import core.stdc.stdlib : crealloc = realloc, cfree = free; | |
15 import core.stdc.string : memmove; | |
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16 import std.string : strip; |
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17 |
1 | 18 import |
188 | 19 core.thread, |
288 | 20 core.exception, |
1 | 21 |
288 | 22 std.typetuple, |
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23 std.conv, |
288 | 24 std.traits, |
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25 |
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26 qt.QGlobal, |
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27 qtd.String, |
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28 qtd.Marshal, |
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29 qtd.meta.Compiletime, |
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30 qtd.ctfe.Format; |
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31 |
288 | 32 /** The beast that takes string representation of function arguments |
33 * and returns an array of default values it doesn't check if arguments | |
34 * without default values follow the arguments with default values for | |
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35 * simplicity. It is done by mixing in a delegate alias. |
288 | 36 */ |
37 string[] defaultValues(string signature) | |
1 | 38 { |
288 | 39 int braces = 0; |
40 bool inDefaultValue = false; | |
41 bool inStringLiteral = false; | |
42 string[] res; | |
43 int startValue = 0; | |
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44 |
288 | 45 if(strip(signature).length == 0) |
46 return res; | |
1 | 47 |
288 | 48 foreach (i,c; signature) |
1 | 49 { |
288 | 50 if(!inStringLiteral) |
1 | 51 { |
288 | 52 if(c == '{' || c =='(') |
53 braces++; | |
54 else if(c == '}' || c ==')') | |
55 braces--; | |
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56 } |
1 | 57 |
288 | 58 if(c == '\"' || c == '\'') |
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59 { |
288 | 60 if (inStringLiteral) |
61 { | |
62 if(signature[i-1] != '\\') | |
63 inStringLiteral = false; | |
64 } | |
65 else | |
66 { | |
67 inStringLiteral = true; | |
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68 } |
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69 } |
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70 |
288 | 71 if (!inStringLiteral && braces == 0) |
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72 { |
288 | 73 if(c == '=') // found default value |
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74 { |
288 | 75 inDefaultValue = true; |
76 startValue = i+1; | |
77 } | |
78 else if(c == ',') // next function argument | |
79 { | |
80 if (inDefaultValue) | |
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81 { |
288 | 82 res ~= signature[startValue..i]; |
83 inDefaultValue = false; | |
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84 } |
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85 } |
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86 } |
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87 } |
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88 |
288 | 89 if (inDefaultValue) |
90 res ~= signature[startValue..$]; | |
1 | 91 |
288 | 92 return res; |
1 | 93 } |
94 | |
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95 /** |
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96 Generates D-to-C++ conversion code for signals. |
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97 */ |
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98 string genConvToCpp(uint argIndex) |
288 | 99 { |
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100 string res = format_ctfe(q{ |
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101 |
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102 static if (isStringType!(Args[${0}])) |
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103 { |
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104 auto _tmp${0} = QString(_t${0}); |
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105 _a[${0}] = cast(void*)&_tmp${0}; |
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106 } |
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107 else static if (isQObjectType!(Args[${0}]) || isObjectType!(Args[${0}])) |
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108 _a[${0}] = _t${0} ? &(_t${0}.__nativeId) : cast(void*)&_t${0}; |
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109 else static if (isValueType!(Args[${0}])) |
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110 _a[${0}] = _t${0}.__nativeId; |
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111 else |
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112 _a[${0}] = cast(void*)&_t${0}; |
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113 |
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114 }, argIndex); |
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115 |
288 | 116 return res; |
117 } | |
118 | |
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119 string genSignalEmitter(SignalKind signalKind, string name, uint localIndex, uint argCount) |
284 | 120 { |
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121 string res; |
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122 |
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123 // signature |
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124 // |
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125 if (signalKind != SignalKind.BindQtSignal) |
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126 res ~= "protected "; |
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127 |
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128 res ~= "Args[0] " ~ name; |
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129 |
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130 if (signalKind == SignalKind.BindQtSignal) |
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131 res ~= "_emit"; |
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132 |
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133 res ~= "("; |
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134 |
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135 foreach (i; 1..argCount) |
284 | 136 { |
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137 auto iStr = to!string(i); |
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138 if (i > 1) |
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139 res ~= ", "; |
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140 res ~= "Args[" ~ iStr ~ "] _t" ~ iStr; |
284 | 141 } |
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142 |
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143 res ~= ") {\n"; |
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144 |
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145 // body |
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146 // |
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147 res ~= " void*[" ~ to!string(argCount) ~ "] _a;\n"; |
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148 foreach (i; 1..argCount) |
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149 res ~= genConvToCpp(i); |
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150 |
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151 res ~= " QMetaObject.activate(this, typeof(this).staticMetaObject, " |
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152 ~ to!string(localIndex) ~ ", _a.ptr);\n"; |
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153 |
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154 return res ~= "}\n"; |
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155 } |
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156 |
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157 // BUG: parameter storage classes are not supported yet |
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158 mixin template SignalEmitter(SignalKind signalKind, int localIndex) |
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159 { |
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160 import std.traits; |
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161 |
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162 alias signals[localIndex] signal; |
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163 alias TypeTuple!(ReturnType!(signal), ParameterTypeTuple!(signal)) Args; |
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164 |
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165 /+ |
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166 pragma(msg, genSignalEmitter(signalKind, |
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167 methodName!signal, |
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168 localIndex, |
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169 Args.length)); |
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170 +/ |
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171 |
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172 mixin (genSignalEmitter(signalKind, |
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173 methodName!signal, |
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174 localIndex, |
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175 Args.length)); |
284 | 176 } |
278 | 177 /** ---------------- */ |
178 | |
179 | |
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180 enum SignalKind |
1 | 181 { |
284 | 182 BindQtSignal, |
288 | 183 NewSignal, |
184 NewSlot | |
284 | 185 } |
186 | |
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187 string signature(T...)(string name) |
288 | 188 { |
189 string res = name ~ "("; | |
190 foreach(i, _; T) | |
191 { | |
192 if(i > 0) | |
193 res ~= ","; | |
302 | 194 static if (isNativeType!(T[i])) |
195 res ~= Unqual!(T[i]).stringof; | |
196 else | |
197 res ~= T[i].stringof; | |
288 | 198 } |
199 res ~= ")"; | |
200 return res; | |
201 } | |
1 | 202 |
319
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203 // ------------------------------------------------------------------ |
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204 |
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205 string[] getSymbols(C)(string prefix) |
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206 { |
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207 string[] result; |
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208 auto allSymbols = __traits(derivedMembers, C); |
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209 foreach(s; allSymbols) |
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210 { |
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211 if(startsWith(s, prefix)) |
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212 result ~= s; |
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213 } |
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214 return result; |
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215 } |
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216 |
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217 string removePrefix(string source) |
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218 { |
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219 foreach (i, c; source) |
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220 { |
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221 if (c == '_') |
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222 return source[i+1..$]; |
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223 } |
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224 return source; |
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225 } |
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226 |
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227 // recursive search in the static meta-information |
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228 template findSymbolsImpl2(C, alias signals, int id) |
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229 { |
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230 alias qtd.meta.Compiletime.Alias!(__traits(getOverloads, C, signals[id])) current; |
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231 static if (signals.length - id - 1 > 0) |
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232 alias TypeTuple!(current, findSymbolsImpl2!(C, signals, id + 1).result) result; |
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233 else |
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234 alias TypeTuple!(current) result; |
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235 } |
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236 |
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237 template findSymbols2(C, string prefix) |
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238 { |
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239 enum signals = getSymbols!(C)(prefix); |
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240 static if (signals) |
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241 alias findSymbolsImpl2!(C, signals, 0).result result; |
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242 else |
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243 alias TypeTuple!() result; |
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244 } |
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245 |
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246 template findSignals(C) |
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247 { |
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248 alias findSymbols2!(C, "signal_").result findSignals; |
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249 } |
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250 |
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251 template findSlots(C) |
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252 { |
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253 alias findSymbols2!(C, "slot_").result findSlots; |
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254 } |
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255 |
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256 template methodName(alias method) |
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257 { |
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258 enum methodName = removePrefix(__traits(identifier, method)); |
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259 } |