Mercurial > projects > ldc
annotate dmd2/import.c @ 1064:f0b6549055ab
Make LDC work with LLVM trunk (s/LinkOnceLinkage/LinkOnceOdrLinkage/)
Also moved the #defines for linkage types into a separate header instead of
mars.h so we can #include revisions.h without having to rebuild the entire
frontend every time we update.
(I'm using revisions.h to get the LLVM revision for use in preprocessor
conditionals. It should work with LLVM release 2.5, old trunk and new trunk)
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Sun, 08 Mar 2009 16:13:10 +0100 |
parents | 356e65836fb5 |
children | 638d16625da2 |
rev | line source |
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847
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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 mod->semantic(); |
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116 |
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117 //printf("-Import::load('%s'), pkg = %p\n", toChars(), pkg); |
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118 } |
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119 |
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120 |
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121 void Import::semantic(Scope *sc) |
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122 { |
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123 //printf("Import::semantic('%s')\n", toChars()); |
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124 |
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125 load(sc); |
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126 |
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127 if (mod) |
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128 { |
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129 #if 0 |
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130 if (mod->loc.linnum != 0) |
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131 { /* If the line number is not 0, then this is not |
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132 * a 'root' module, i.e. it was not specified on the command line. |
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133 */ |
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134 mod->importedFrom = sc->module->importedFrom; |
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135 assert(mod->importedFrom); |
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136 } |
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137 #endif |
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138 |
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139 /* Default to private importing |
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140 */ |
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141 protection = sc->protection; |
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142 if (!sc->explicitProtection) |
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143 protection = PROTprivate; |
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144 |
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145 if (!isstatic && !aliasId && !names.dim) |
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146 { |
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147 sc->scopesym->importScope(mod, protection); |
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148 } |
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149 |
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150 // Modules need a list of each imported module |
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151 sc->module->aimports.push(mod); |
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152 |
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153 if (mod->needmoduleinfo) |
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154 sc->module->needmoduleinfo = 1; |
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155 |
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156 sc = sc->push(mod); |
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157 for (size_t i = 0; i < aliasdecls.dim; i++) |
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158 { AliasDeclaration *ad = (AliasDeclaration *)aliasdecls.data[i]; |
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159 |
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160 //printf("\tImport alias semantic('%s')\n", s->toChars()); |
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161 if (!mod->search(loc, (Identifier *)names.data[i], 0)) |
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162 error("%s not found", ((Identifier *)names.data[i])->toChars()); |
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163 |
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164 ad->semantic(sc); |
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165 ad->protection = protection; |
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166 } |
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167 sc = sc->pop(); |
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168 } |
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169 //printf("-Import::semantic('%s'), pkg = %p\n", toChars(), pkg); |
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170 } |
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171 |
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172 void Import::semantic2(Scope *sc) |
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173 { |
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174 //printf("Import::semantic2('%s')\n", toChars()); |
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175 mod->semantic2(); |
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176 if (mod->needmoduleinfo) |
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177 sc->module->needmoduleinfo = 1; |
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178 } |
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179 |
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180 Dsymbol *Import::toAlias() |
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181 { |
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182 if (aliasId) |
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183 return mod; |
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184 return this; |
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185 } |
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186 |
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187 /***************************** |
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188 * Add import to sd's symbol table. |
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189 */ |
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190 |
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191 int Import::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) |
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192 { |
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193 int result = 0; |
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194 |
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195 if (names.dim == 0) |
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196 return Dsymbol::addMember(sc, sd, memnum); |
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197 |
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198 if (aliasId) |
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199 result = Dsymbol::addMember(sc, sd, memnum); |
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200 |
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201 /* Instead of adding the import to sd's symbol table, |
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202 * add each of the alias=name pairs |
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203 */ |
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204 for (size_t i = 0; i < names.dim; i++) |
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205 { |
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206 Identifier *name = (Identifier *)names.data[i]; |
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207 Identifier *alias = (Identifier *)aliases.data[i]; |
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208 |
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209 if (!alias) |
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210 alias = name; |
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211 |
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212 TypeIdentifier *tname = new TypeIdentifier(loc, name); |
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213 AliasDeclaration *ad = new AliasDeclaration(loc, alias, tname); |
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214 result |= ad->addMember(sc, sd, memnum); |
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215 |
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216 aliasdecls.push(ad); |
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217 } |
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218 |
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219 return result; |
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220 } |
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221 |
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222 Dsymbol *Import::search(Loc loc, Identifier *ident, int flags) |
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223 { |
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224 //printf("%s.Import::search(ident = '%s', flags = x%x)\n", toChars(), ident->toChars(), flags); |
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225 |
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226 if (!pkg) |
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227 load(NULL); |
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228 |
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229 // Forward it to the package/module |
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230 return pkg->search(loc, ident, flags); |
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231 } |
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232 |
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233 int Import::overloadInsert(Dsymbol *s) |
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234 { |
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235 // Allow multiple imports of the same name |
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236 return s->isImport() != NULL; |
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237 } |
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238 |
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239 void Import::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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240 { |
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241 if (hgs->hdrgen && id == Id::object) |
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242 return; // object is imported by default |
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243 |
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244 if (isstatic) |
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245 buf->writestring("static "); |
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246 buf->writestring("import "); |
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247 if (aliasId) |
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248 { |
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249 buf->printf("%s = ", aliasId->toChars()); |
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250 } |
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251 if (packages && packages->dim) |
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252 { |
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253 for (size_t i = 0; i < packages->dim; i++) |
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254 { Identifier *pid = (Identifier *)packages->data[i]; |
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255 |
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256 buf->printf("%s.", pid->toChars()); |
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257 } |
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258 } |
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259 buf->printf("%s;", id->toChars()); |
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260 buf->writenl(); |
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261 } |
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262 |