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Implemented methods for Tuples, fixed some linking issues.
author Robert Clipsham <robert@octarineparrot.com>
date Sun, 04 Apr 2010 22:41:11 +0100
parents 10317f0c89a5
children 460959608115
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1 module dmd.TupleDeclaration;
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2
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3 import dmd.Declaration;
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4 import dmd.Argument;
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5 import dmd.ArrayTypes;
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6 import dmd.TypeTuple;
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7 import dmd.Loc;
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8 import dmd.STC;
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9 import dmd.TOK;
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10 import dmd.Identifier;
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11 import dmd.Dsymbol;
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12 import dmd.Type;
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13 import dmd.DYNCAST;
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14 import dmd.OutBuffer;
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15 import dmd.Expression;
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16 import dmd.DsymbolExp;
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17
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18 class TupleDeclaration : Declaration
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19 {
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20 Objects objects;
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21 int isexp; // 1: expression tuple
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22
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23 TypeTuple tupletype; // !=NULL if this is a type tuple
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24
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25 this(Loc loc, Identifier ident, Objects objects)
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26 {
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27 super(ident);
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28 type = null;
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29 this.objects = objects;
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30 isexp = 0;
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31 tupletype = null;
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32 }
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33
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34 Dsymbol syntaxCopy(Dsymbol)
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35 {
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36 assert(false);
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37 }
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38
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39 string kind()
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40 {
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41 return "tuple";
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42 }
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43
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44 Type getType()
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45 {
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46 /* If this tuple represents a type, return that type
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47 */
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48
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49 //printf("TupleDeclaration::getType() %s\n", toChars());
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50 if (isexp)
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51 return null;
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52 if (!tupletype)
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53 {
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54 /* It's only a type tuple if all the Object's are types
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55 */
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56 for (size_t i = 0; i < objects.dim; i++)
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57 { Dsymbol o = cast(Dsymbol)objects.data[i];
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58
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59 if (o.dyncast() != DYNCAST.DYNCAST_TYPE)
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60 {
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61 //printf("\tnot[%d], %p, %d\n", i, o, o->dyncast());
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62 return null;
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63 }
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64 }
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65
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66 /* We know it's a type tuple, so build the TypeTuple
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67 */
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68 Arguments args = new Arguments();
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69 args.setDim(objects.dim);
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70 OutBuffer buf = new OutBuffer();
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71 for (size_t i = 0; i < objects.dim; i++)
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72 { Type t = cast(Type)objects.data[i];
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73
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74 //printf("type = %s\n", t->toChars());
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75 static if (0) {
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76 buf.printf("_%s_%d", ident.toChars(), i);
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77 char *name = cast(char *)buf.extractData();
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78 Identifier id = new Identifier(name, TOKidentifier);
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79 Argument arg = new Argument(STCin, t, id, null);
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80 } else {
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81 Argument arg = new Argument(STCundefined, t, null, null);
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82 }
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83 args.data[i] = cast(void *)arg;
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84 }
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85
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86 tupletype = new TypeTuple(args);
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87 }
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88
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89 return tupletype;
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90 }
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92 bool needThis()
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93 {
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94 //printf("TupleDeclaration::needThis(%s)\n", toChars());
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95 for (size_t i = 0; i < objects.dim; i++)
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96 { Dsymbol o = cast(Dsymbol)objects.data[i];
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97 if (o.dyncast() == DYNCAST.DYNCAST_EXPRESSION)
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98 { Expression e = cast(Expression)o;
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99 if (e.op == TOKdsymbol)
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100 { DsymbolExp ve = cast(DsymbolExp)e;
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101 Declaration d = ve.s.isDeclaration();
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102 if (d && d.needThis())
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103 {
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104 return 1;
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105 }
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106 }
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107 }
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108 }
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109 return 0;
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110 }
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111
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112 TupleDeclaration isTupleDeclaration() { return this; }
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113 }