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78
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1 module test;
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2
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3 import dwt.internal.gtk.c.cairo;
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4 import tango.core.Traits;
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5 import tango.io.Stdout;
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6 import tango.stdc.stdio;
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7
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8 struct lock {
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9 static void lock() { printf("lock\n");}
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10 static void unlock() { printf("unlock\n");}
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11 }
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12
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13 const static char[] mm = "Inside outer cairo_version";
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14
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15 template NameOfFunc(alias f) {
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16 // Note: highly dependent on the .stringof formatting
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17 // the value begins with "& " which is why the first two chars are cut off
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18 const char[] NameOfFunc = (&f).stringof[2 .. $];
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19 }
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20
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21 template ForwardGtkOsCFunc( alias cFunc ) {
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22 alias ParameterTupleOf!(cFunc) P;
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23 alias ReturnTypeOf!(cFunc) R;
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24 mixin("public static R " ~ NameOfFunc!(cFunc) ~ "( P p ){
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25 lock.lock();
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26 scope(exit) lock.unlock();
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27 Stdout (mm).newline;
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28 return cFunc(p);
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29 }");
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30 }
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31
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32 public class OS {
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33 mixin ForwardGtkOsCFunc!(cairo_version);
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34 mixin ForwardGtkOsCFunc!(cairo_version_string);
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35 }
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36
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37 void main()
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38 {
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39 Stdout ("calling cairo_version...").newline;
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40 int p = OS.cairo_version();
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41 int i = cairo_version();
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42 Stdout.formatln("OS.cairo_version() returns: {} cairo_version() returns: {}", p, i ).newline;
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43 printf("OS.cairo_version_string returns: %s\n", cairo_version_string() );
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44 }
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