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annotate dmd/TemplateValueParameter.d @ 170:96c0fff6897d

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more global state cleanup
author korDen
date Thu, 30 Sep 2010 14:09:50 +0400
parents 60bb0fe4563e
children e3afd1303184
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1 module dmd.TemplateValueParameter;
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2
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3 import dmd.common;
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4 import dmd.TemplateParameter;
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5 import dmd.Scope;
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6 import dmd.Declaration;
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7 import dmd.ArrayTypes;
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8 import dmd.Type;
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9 import dmd.Expression;
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10 import dmd.Loc;
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11 import dmd.Identifier;
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12 import dmd.OutBuffer;
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13 import dmd.HdrGenState;
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14 import dmd.MATCH;
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15 import dmd.VarDeclaration;
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16 import dmd.Initializer;
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17 import dmd.ExpInitializer;
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18 import dmd.DefaultInitExp;
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19 import dmd.STC;
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20 import dmd.Util;
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21 import dmd.TY;
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22 import dmd.WANT;
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23 import dmd.TOK;
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24
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25 import dmd.Dsymbol : isExpression;
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26
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27 static __gshared Expression edummy;
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28 shared static this()
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29 {
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30 edummy = new Expression(Loc(0), TOK.init, 0);
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31 }
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32
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33 class TemplateValueParameter : TemplateParameter
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34 {
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35 /* Syntax:
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36 * valType ident : specValue = defaultValue
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37 */
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38
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39 Type valType;
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40 Expression specValue;
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41 Expression defaultValue;
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42
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43 this(Loc loc, Identifier ident, Type valType, Expression specValue, Expression defaultValue)
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44 {
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45 super(loc, ident);
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47 this.valType = valType;
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48 this.specValue = specValue;
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49 this.defaultValue = defaultValue;
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50 }
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51
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52 override TemplateValueParameter isTemplateValueParameter()
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53 {
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54 return this;
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55 }
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56
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57 override TemplateParameter syntaxCopy()
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58 {
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59 TemplateValueParameter tp = new TemplateValueParameter(loc, ident, valType, specValue, defaultValue);
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60 tp.valType = valType.syntaxCopy();
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61 if (specValue)
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62 tp.specValue = specValue.syntaxCopy();
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63 if (defaultValue)
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64 tp.defaultValue = defaultValue.syntaxCopy();
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65 return tp;
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66 }
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67
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68 override void declareParameter(Scope sc)
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69 {
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70 VarDeclaration v = new VarDeclaration(loc, valType, ident, null);
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71 v.storage_class = STC.STCtemplateparameter;
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72 if (!sc.insert(v))
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73 error(loc, "parameter '%s' multiply defined", ident.toChars());
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74 sparam = v;
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75 }
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76
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77 override void semantic(Scope sc)
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78 {
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79 sparam.semantic(sc);
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80 valType = valType.semantic(loc, sc);
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81 if (!(valType.isintegral() || valType.isfloating() || valType.isString()) && valType.ty != TY.Tident)
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82 error(loc, "arithmetic/string type expected for value-parameter, not %s", valType.toChars());
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83
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84 if (specValue)
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85 {
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86 Expression e = specValue;
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87
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88 e = e.semantic(sc);
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89 e = e.implicitCastTo(sc, valType);
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90 e = e.optimize(WANTvalue | WANTinterpret);
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91 if (e.op == TOKint64 || e.op == TOKfloat64 ||
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92 e.op == TOKcomplex80 || e.op == TOKnull || e.op == TOKstring)
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93 specValue = e;
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94 //e.toInteger();
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95 }
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96
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97 static if (false) { // defer semantic analysis to arg match
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98 if (defaultValue)
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99 {
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100 Expression e = defaultValue;
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101
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102 e = e.semantic(sc);
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103 e = e.implicitCastTo(sc, valType);
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104 e = e.optimize(WANTvalue | WANTinterpret);
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105 if (e.op == TOKint64)
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106 defaultValue = e;
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107 //e.toInteger();
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108 }
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109 }
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110 }
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111
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112 override void print(Object oarg, Object oded)
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113 {
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114 assert(false);
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115 }
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116
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117 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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118 {
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119 valType.toCBuffer(buf, ident, hgs);
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120 if (specValue)
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121 {
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122 buf.writestring(" : ");
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123 specValue.toCBuffer(buf, hgs);
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124 }
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125 if (defaultValue)
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126 {
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127 buf.writestring(" = ");
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128 defaultValue.toCBuffer(buf, hgs);
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129 }
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130 }
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131
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132 override Object specialization()
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133 {
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134 return specValue;
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135 }
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136
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137 override Object defaultArg(Loc loc, Scope sc)
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138 {
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139 Expression e = defaultValue;
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140 if (e)
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141 {
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142 e = e.syntaxCopy();
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143 e = e.semantic(sc);
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144 version (DMDV2) {
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145 e = e.resolveLoc(loc, sc);
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146 }
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147 }
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148 return e;
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149 }
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150
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151 override bool overloadMatch(TemplateParameter tp)
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152 {
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153 TemplateValueParameter tvp = tp.isTemplateValueParameter();
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154
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155 if (tvp)
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156 {
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157 if (valType != tvp.valType)
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158 return false;
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159
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160 if (valType && !valType.equals(tvp.valType))
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161 return false;
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162
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163 if (specValue != tvp.specValue)
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164 return false;
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165
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166 return true; // match
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167 }
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168
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169 return false;
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170 }
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171
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172 override MATCH matchArg(Scope sc, Objects tiargs, int i, TemplateParameters parameters, Objects dedtypes, Declaration* psparam, int flags)
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173 {
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174 //printf("TemplateValueParameter.matchArg()\n");
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175
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176 Initializer init;
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177 Declaration sparam;
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178 MATCH m = MATCHexact;
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179 Expression ei;
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180 Object oarg;
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181
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182 if (i < tiargs.dim)
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183 oarg = tiargs[i];
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184 else
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185 {
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186 // Get default argument instead
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187 oarg = defaultArg(loc, sc);
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188 if (!oarg)
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189 {
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190 assert(i < dedtypes.dim);
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191 // It might have already been deduced
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192 oarg = dedtypes[i];
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193 if (!oarg)
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194 goto Lnomatch;
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korDen
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195 }
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196 }
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197
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198 ei = isExpression(oarg);
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199 Type vt;
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200
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
201 if (!ei && oarg)
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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202 goto Lnomatch;
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
korDen
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203
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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204 if (ei && ei.op == TOKvar)
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205 {
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206 // Resolve const variables that we had skipped earlier
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207 ei = ei.optimize(WANTvalue | WANTinterpret);
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208 }
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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209
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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210 if (specValue)
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211 {
170
96c0fff6897d more global state cleanup
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212 if (!ei || ei is edummy)
40
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213 goto Lnomatch;
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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214
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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215 Expression e = specValue;
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216
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217 e = e.semantic(sc);
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218 e = e.implicitCastTo(sc, valType);
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219 e = e.optimize(WANTvalue | WANTinterpret);
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220 //e.type = e.type.toHeadMutable();
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221
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222 ei = ei.syntaxCopy();
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223 ei = ei.semantic(sc);
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224 ei = ei.optimize(WANTvalue | WANTinterpret);
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225 //ei.type = ei.type.toHeadMutable();
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226 //printf("\tei: %s, %s\n", ei.toChars(), ei.type.toChars());
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227 //printf("\te : %s, %s\n", e.toChars(), e.type.toChars());
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228 if (!ei.equals(e))
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229 goto Lnomatch;
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230 }
113
3482c73a991b More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents: 94
diff changeset
231 else if (dedtypes[i])
40
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korDen
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232 { // Must match already deduced value
113
3482c73a991b More cleanup for arrays
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents: 94
diff changeset
233 auto e = cast(Expression)dedtypes[i];
40
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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234
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
235 if (!ei || !ei.equals(e))
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236 goto Lnomatch;
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diff changeset
237 }
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238 Lmatch:
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239 //printf("\tvalType: %s, ty = %d\n", valType.toChars(), valType.ty);
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240 vt = valType.semantic(Loc(0), sc);
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241 //printf("ei: %s, ei.type: %s\n", ei.toChars(), ei.type.toChars());
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242 //printf("vt = %s\n", vt.toChars());
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243 if (ei.type)
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244 {
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245 m = cast(MATCH)ei.implicitConvTo(vt);
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246 //printf("m: %d\n", m);
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diff changeset
247 if (!m)
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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248 goto Lnomatch;
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korDen
parents: 39
diff changeset
249 }
94
3a0b150c9841 Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents: 72
diff changeset
250 dedtypes[i] = ei;
40
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
251
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
252 init = new ExpInitializer(loc, ei);
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253 sparam = new VarDeclaration(loc, vt, ident, init);
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254 sparam.storage_class = STCmanifest;
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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255 *psparam = sparam;
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256 return m;
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
257
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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diff changeset
258 Lnomatch:
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259 //printf("\tno match\n");
caa9bdb08ae6 TemplateValueParameter.matchArg implemented
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260 *psparam = null;
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diff changeset
261 return MATCHnomatch;
0
10317f0c89a5 Initial commit
korDen
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262 }
10317f0c89a5 Initial commit
korDen
parents:
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263
94
3a0b150c9841 Objects -> Vector!Object iteration 1
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents: 72
diff changeset
264 override Object dummyArg()
0
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
265 {
170
96c0fff6897d more global state cleanup
korDen
parents: 130
diff changeset
266 if (!specValue)
64
4290d870944a More fixes
korDen
parents: 50
diff changeset
267 {
170
96c0fff6897d more global state cleanup
korDen
parents: 130
diff changeset
268 return edummy;
64
4290d870944a More fixes
korDen
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diff changeset
269 }
170
96c0fff6897d more global state cleanup
korDen
parents: 130
diff changeset
270
96c0fff6897d more global state cleanup
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diff changeset
271 return specValue;
0
10317f0c89a5 Initial commit
korDen
parents:
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272 }
72
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 64
diff changeset
273 }