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1 module dmd.VersionSymbol;
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2
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114
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3 import dmd.common;
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4 import dmd.Dsymbol;
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5 import dmd.Loc;
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6 import dmd.Identifier;
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7 import dmd.Module;
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8 import dmd.Array;
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9 import dmd.VersionCondition;
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10 import dmd.Scope;
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11 import dmd.ScopeDsymbol;
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12 import dmd.HdrGenState;
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13 import dmd.String;
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14 import dmd.OutBuffer;
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15
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129
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16 /* VersionSymbol's happen for statements like:
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17 * version = identifier;
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18 * version = integer;
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19 */
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20 class VersionSymbol : Dsymbol
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21 {
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22 uint level;
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23
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24 this(Loc loc, Identifier ident)
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25 {
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178
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26 register();
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27 super(ident);
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28 this.loc = loc;
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29 }
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178
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30
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31 this(Loc loc, uint level)
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32 {
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178
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33 register();
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34 super();
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35
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36 this.level = level;
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37 this.loc = loc;
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38 }
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178
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39
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72
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40 override Dsymbol syntaxCopy(Dsymbol s)
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41 {
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129
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42 assert(!s);
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43 VersionSymbol ds = new VersionSymbol(loc, ident);
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44 ds.level = level;
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45 return ds;
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46 }
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178
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47
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48 override bool addMember(Scope sc, ScopeDsymbol s, bool memnum)
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49 {
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50 //printf("VersionSymbol::addMember('%s') %s\n", sd->toChars(), toChars());
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51
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52 // Do not add the member to the symbol table,
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53 // just make sure subsequent debug declarations work.
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54 Module m = s.isModule();
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55 if (ident)
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56 {
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57 VersionCondition.checkPredefined(loc, ident.toChars());
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58 if (!m)
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59 error("declaration must be at module level");
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60 else
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61 {
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62 if (findCondition(m.versionidsNot, ident))
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63 error("defined after use");
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178
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64 m.versionids.push(ident.toChars());
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65 }
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66 }
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67 else
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68 {
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69 if (!m)
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70 error("level declaration must be at module level");
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71 else
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72 m.versionlevel = level;
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73 }
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74
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75 return false;
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76 }
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178
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77
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78 override void semantic(Scope sc)
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79 {
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80 }
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178
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81
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82 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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83 {
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129
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84 buf.writestring("version = ");
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85 if (ident)
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86 buf.writestring(ident.toChars());
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87 else
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88 buf.printf("%u", level);
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89 buf.writestring(";");
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90 buf.writenl();
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91 }
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178
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92
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72
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93 override string kind()
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94 {
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129
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95 return "version";
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96 }
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72
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97 }
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