Mercurial > projects > ldc
annotate dmd/import.c @ 973:d96471e8b5e5
Fix #216 by implementing TypeExp::toElem. It just provides the appropriate
error message.
author | Christian Kamm <kamm incasoftware de> |
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date | Tue, 17 Feb 2009 18:25:34 +0100 |
parents | 330f999ade44 |
children | 78038e540342 |
rev | line source |
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846
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1 |
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2 // Compiler implementation of the D programming language |
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3 // Copyright (c) 1999-2006 by Digital Mars |
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4 // All Rights Reserved |
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5 // written by Walter Bright |
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6 // http://www.digitalmars.com |
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7 // License for redistribution is by either the Artistic License |
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8 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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9 // See the included readme.txt for details. |
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10 |
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11 #include <stdio.h> |
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12 #include <assert.h> |
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13 |
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14 #include "root.h" |
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15 #include "dsymbol.h" |
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16 #include "import.h" |
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17 #include "identifier.h" |
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18 #include "module.h" |
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19 #include "scope.h" |
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20 #include "hdrgen.h" |
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21 #include "mtype.h" |
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22 #include "declaration.h" |
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23 #include "id.h" |
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24 |
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25 /********************************* Import ****************************/ |
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26 |
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27 Import::Import(Loc loc, Array *packages, Identifier *id, Identifier *aliasId, |
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28 int isstatic) |
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29 : Dsymbol(id) |
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30 { |
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31 this->loc = loc; |
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32 this->packages = packages; |
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33 this->id = id; |
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34 this->aliasId = aliasId; |
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35 this->isstatic = isstatic; |
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36 protection = PROTundefined; |
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37 pkg = NULL; |
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38 mod = NULL; |
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39 |
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40 if (aliasId) |
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41 this->ident = aliasId; |
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42 // Kludge to change Import identifier to first package |
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43 else if (packages && packages->dim) |
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44 this->ident = (Identifier *)packages->data[0]; |
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45 } |
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46 |
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47 void Import::addAlias(Identifier *name, Identifier *alias) |
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48 { |
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49 if (isstatic) |
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50 error("cannot have an import bind list"); |
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51 |
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52 if (!aliasId) |
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53 this->ident = NULL; // make it an anonymous import |
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54 |
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55 names.push(name); |
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56 aliases.push(alias); |
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57 } |
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58 |
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59 const char *Import::kind() |
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60 { |
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61 return isstatic ? (char *)"static import" : (char *)"import"; |
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62 } |
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63 |
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64 enum PROT Import::prot() |
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65 { |
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66 return protection; |
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67 } |
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68 |
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69 Dsymbol *Import::syntaxCopy(Dsymbol *s) |
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70 { |
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71 assert(!s); |
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72 |
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73 Import *si; |
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74 |
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75 si = new Import(loc, packages, id, aliasId, isstatic); |
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76 |
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77 for (size_t i = 0; i < names.dim; i++) |
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78 { |
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79 si->addAlias((Identifier *)names.data[i], (Identifier *)aliases.data[i]); |
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80 } |
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81 |
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82 return si; |
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83 } |
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84 |
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85 void Import::load(Scope *sc) |
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86 { |
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87 DsymbolTable *dst; |
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88 Dsymbol *s; |
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89 |
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90 //printf("Import::load('%s')\n", toChars()); |
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91 |
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92 // See if existing module |
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93 dst = Package::resolve(packages, NULL, &pkg); |
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94 |
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95 s = dst->lookup(id); |
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96 if (s) |
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97 { |
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98 if (s->isModule()) |
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99 mod = (Module *)s; |
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100 else |
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101 error("package and module have the same name"); |
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102 } |
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103 |
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104 if (!mod) |
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105 { |
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106 // Load module |
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107 mod = Module::load(loc, packages, id); |
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108 dst->insert(id, mod); // id may be different from mod->ident, |
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109 // if so then insert alias |
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110 if (!mod->importedFrom) |
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111 mod->importedFrom = sc ? sc->module->importedFrom : Module::rootModule; |
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112 } |
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113 if (!pkg) |
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114 pkg = mod; |
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115 |
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116 //printf("-Import::load('%s'), pkg = %p\n", toChars(), pkg); |
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117 } |
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118 |
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119 |
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120 void Import::semantic(Scope *sc) |
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121 { |
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122 //printf("Import::semantic('%s')\n", toChars()); |
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123 |
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124 load(sc); |
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125 |
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126 if (mod) |
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127 { |
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128 #if 0 |
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129 if (mod->loc.linnum != 0) |
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130 { /* If the line number is not 0, then this is not |
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131 * a 'root' module, i.e. it was not specified on the command line. |
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132 */ |
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133 mod->importedFrom = sc->module->importedFrom; |
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134 assert(mod->importedFrom); |
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135 } |
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136 #endif |
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137 |
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138 // Modules need a list of each imported module |
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139 //printf("%s imports %s\n", sc->module->toChars(), mod->toChars()); |
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140 sc->module->aimports.push(mod); |
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141 |
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142 mod->semantic(); |
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143 |
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144 /* Default to private importing |
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145 */ |
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146 protection = sc->protection; |
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147 if (!sc->explicitProtection) |
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148 protection = PROTprivate; |
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149 |
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150 if (!isstatic && !aliasId && !names.dim) |
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151 { |
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152 sc->scopesym->importScope(mod, protection); |
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153 } |
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154 |
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155 if (mod->needmoduleinfo) |
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156 sc->module->needmoduleinfo = 1; |
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157 |
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158 sc = sc->push(mod); |
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159 for (size_t i = 0; i < aliasdecls.dim; i++) |
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160 { AliasDeclaration *ad = (AliasDeclaration *)aliasdecls.data[i]; |
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161 |
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162 //printf("\tImport alias semantic('%s')\n", s->toChars()); |
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163 if (!mod->search(loc, (Identifier *)names.data[i], 0)) |
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164 error("%s not found", ((Identifier *)names.data[i])->toChars()); |
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165 |
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166 ad->semantic(sc); |
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167 ad->protection = protection; |
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168 } |
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169 sc = sc->pop(); |
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170 } |
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171 //printf("-Import::semantic('%s'), pkg = %p\n", toChars(), pkg); |
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172 } |
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173 |
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174 void Import::semantic2(Scope *sc) |
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175 { |
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176 //printf("Import::semantic2('%s')\n", toChars()); |
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177 mod->semantic2(); |
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178 if (mod->needmoduleinfo) |
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179 sc->module->needmoduleinfo = 1; |
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180 } |
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181 |
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182 Dsymbol *Import::toAlias() |
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183 { |
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184 if (aliasId) |
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185 return mod; |
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186 return this; |
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187 } |
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188 |
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189 /***************************** |
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190 * Add import to sd's symbol table. |
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191 */ |
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192 |
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193 int Import::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) |
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194 { |
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195 int result = 0; |
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196 |
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197 if (names.dim == 0) |
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198 return Dsymbol::addMember(sc, sd, memnum); |
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199 |
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200 if (aliasId) |
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201 result = Dsymbol::addMember(sc, sd, memnum); |
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202 |
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203 /* Instead of adding the import to sd's symbol table, |
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204 * add each of the alias=name pairs |
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205 */ |
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206 for (size_t i = 0; i < names.dim; i++) |
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207 { |
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208 Identifier *name = (Identifier *)names.data[i]; |
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209 Identifier *alias = (Identifier *)aliases.data[i]; |
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210 |
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211 if (!alias) |
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212 alias = name; |
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213 |
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214 TypeIdentifier *tname = new TypeIdentifier(loc, name); |
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215 AliasDeclaration *ad = new AliasDeclaration(loc, alias, tname); |
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216 result |= ad->addMember(sc, sd, memnum); |
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217 |
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218 aliasdecls.push(ad); |
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219 } |
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220 |
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221 return result; |
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222 } |
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223 |
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224 Dsymbol *Import::search(Loc loc, Identifier *ident, int flags) |
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225 { |
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226 //printf("%s.Import::search(ident = '%s', flags = x%x)\n", toChars(), ident->toChars(), flags); |
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227 |
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228 if (!pkg) |
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229 { load(NULL); |
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230 mod->semantic(); |
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231 } |
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232 |
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233 // Forward it to the package/module |
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234 return pkg->search(loc, ident, flags); |
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235 } |
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236 |
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237 int Import::overloadInsert(Dsymbol *s) |
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238 { |
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239 // Allow multiple imports of the same name |
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240 return s->isImport() != NULL; |
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241 } |
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242 |
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243 void Import::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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244 { |
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245 if (hgs->hdrgen && id == Id::object) |
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246 return; // object is imported by default |
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247 |
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248 if (isstatic) |
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249 buf->writestring("static "); |
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250 buf->writestring("import "); |
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251 if (aliasId) |
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252 { |
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253 buf->printf("%s = ", aliasId->toChars()); |
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254 } |
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255 if (packages && packages->dim) |
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256 { |
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257 for (size_t i = 0; i < packages->dim; i++) |
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258 { Identifier *pid = (Identifier *)packages->data[i]; |
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259 |
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260 buf->printf("%s.", pid->toChars()); |
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261 } |
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262 } |
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263 buf->printf("%s;", id->toChars()); |
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264 buf->writenl(); |
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265 } |
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266 |