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annotate test/funcptr.d @ 102:027b8d8b71ec trunk

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[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up. Basically it tries to do the following in order: Resolve types, Declare symbols, Create constant initializers, Apply initializers, Generate functions bodies. ClassInfo is now has the most useful(biased?) members working. Probably other stuf...
author lindquist
date Sun, 18 Nov 2007 06:52:57 +0100
parents c53b6e3fe49a
children d9d5d59873d8
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1
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1 int return_six()
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2 {
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3 return 6;
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4 }
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5
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6 int add_int(int a, int b)
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7 {
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8 return a+b;
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9 }
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11 int sub_int(int a, int b)
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12 {
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13 return a-b;
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14 }
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15
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16 alias int function(int,int) binfn_t;
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17
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18 int binop_int(binfn_t op, int a, int b)
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19 {
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20 return op(a,b);
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21 }
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22
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23 binfn_t get_binop_int(char op)
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24 {
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25 binfn_t fn;
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26 if (op == '+')
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27 fn = &add_int;
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28 else if (op == '-')
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29 fn = &sub_int;
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30 return fn;
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31 }
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32
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33 extern(C) float mul_float(float a, float b)
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34 {
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35 return a * b;
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36 }
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37
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38 void function_pointers()
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39 {
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40 int function() fn = &return_six;
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41 assert(fn() == 6);
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42
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43 binfn_t binfn = &add_int;
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44 assert(binfn(4,1045) == 1049);
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45
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46 assert(binop_int(binfn, 10,656) == 666);
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47
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48 binfn = get_binop_int('+');
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49 assert(binop_int(binfn, 10,100) == 110);
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50 binfn = get_binop_int('-');
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51 assert(binop_int(binfn, 10,100) == -90);
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53 {
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54 auto ffn = &mul_float;
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55 float ftmp = mul_float(2.5,5);
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56 assert(ftmp == 12.5);
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57 assert(ftmp > 12.49 && ftmp < 12.51);
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58 }
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59 }
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60
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61 void main()
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62 {
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63 printf("Function pointer test\n");
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64 function_pointers();
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65 printf(" SUCCESS\n");
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66 }