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annotate dmd2/scope.c @ 1138:4c8bb03e4fbc

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Update DtoConstFP() to be correct after LLVM r67562, which changed the way the APFloat constructor expects its i80 APInts to be formatted. (They're now actually consistent with the x87 format)
author Frits van Bommel <fvbommel wxs.nl>
date Tue, 24 Mar 2009 15:24:59 +0100
parents f04dde6e882c
children 638d16625da2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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758
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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1
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2 // Copyright (c) 1999-2005 by Digital Mars
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3 // All Rights Reserved
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4 // written by Walter Bright
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5 // http://www.digitalmars.com
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6 // License for redistribution is by either the Artistic License
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7 // in artistic.txt, or the GNU General Public License in gnu.txt.
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8 // See the included readme.txt for details.
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9
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10 #include <stdio.h>
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11 #include <assert.h>
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12
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13 #include "root.h"
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14
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15 #include "mars.h"
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16 #include "init.h"
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17 #include "identifier.h"
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18 #include "attrib.h"
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19 #include "dsymbol.h"
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20 #include "scope.h"
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21 #include "declaration.h"
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22 #include "aggregate.h"
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23 #include "module.h"
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24 #include "id.h"
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26 Scope *Scope::freelist = NULL;
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27
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28 void *Scope::operator new(size_t size)
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29 {
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30 if (freelist)
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31 {
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32 Scope *s = freelist;
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33 freelist = s->enclosing;
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34 //printf("freelist %p\n", s);
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35 assert(s->flags & SCOPEfree);
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36 s->flags &= ~SCOPEfree;
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37 return s;
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38 }
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39
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40 void *p = ::operator new(size);
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41 //printf("new %p\n", p);
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42 return p;
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43 }
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44
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45 Scope::Scope()
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46 { // Create root scope
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47
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48 //printf("Scope::Scope() %p\n", this);
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49 this->module = NULL;
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50 this->scopesym = NULL;
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51 this->sd = NULL;
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52 this->enclosing = NULL;
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53 this->parent = NULL;
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54 this->sw = NULL;
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55 this->tf = NULL;
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56 this->tfOfTry = NULL;
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57 this->tinst = NULL;
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58 this->sbreak = NULL;
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59 this->scontinue = NULL;
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60 this->fes = NULL;
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61 this->structalign = global.structalign;
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62 this->func = NULL;
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63 this->slabel = NULL;
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64 this->linkage = LINKd;
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65 this->protection = PROTpublic;
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66 this->explicitProtection = 0;
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67 this->stc = 0;
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68 this->offset = 0;
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69 this->inunion = 0;
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70 this->incontract = 0;
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71 this->nofree = 0;
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72 this->noctor = 0;
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73 this->noaccesscheck = 0;
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74 this->intypeof = 0;
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75 this->parameterSpecialization = 0;
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76 this->callSuper = 0;
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77 this->flags = 0;
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78 this->anonAgg = NULL;
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79 this->lastdc = NULL;
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80 this->lastoffset = 0;
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81 this->docbuf = NULL;
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82 }
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83
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84 Scope::Scope(Scope *enclosing)
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85 {
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86 //printf("Scope::Scope(enclosing = %p) %p\n", enclosing, this);
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87 assert(!(enclosing->flags & SCOPEfree));
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88 this->module = enclosing->module;
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89 this->func = enclosing->func;
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90 this->parent = enclosing->parent;
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91 this->scopesym = NULL;
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92 this->sd = NULL;
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93 this->sw = enclosing->sw;
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94 this->tf = enclosing->tf;
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95 this->tfOfTry = enclosing->tfOfTry;
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96 this->tinst = enclosing->tinst;
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97 this->sbreak = enclosing->sbreak;
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98 this->scontinue = enclosing->scontinue;
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99 this->fes = enclosing->fes;
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100 this->structalign = enclosing->structalign;
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101 this->enclosing = enclosing;
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102 #ifdef DEBUG
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103 if (enclosing->enclosing)
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104 assert(!(enclosing->enclosing->flags & SCOPEfree));
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105 if (this == enclosing->enclosing)
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106 {
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107 printf("this = %p, enclosing = %p, enclosing->enclosing = %p\n", this, enclosing, enclosing->enclosing);
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108 }
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109 assert(this != enclosing->enclosing);
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110 #endif
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111 this->slabel = NULL;
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112 this->linkage = enclosing->linkage;
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113 this->protection = enclosing->protection;
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114 this->explicitProtection = enclosing->explicitProtection;
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115 this->stc = enclosing->stc;
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116 this->offset = 0;
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117 this->inunion = enclosing->inunion;
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118 this->incontract = enclosing->incontract;
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119 this->nofree = 0;
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120 this->noctor = enclosing->noctor;
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121 this->noaccesscheck = enclosing->noaccesscheck;
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122 this->intypeof = enclosing->intypeof;
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123 this->parameterSpecialization = enclosing->parameterSpecialization;
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124 this->callSuper = enclosing->callSuper;
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125 this->flags = 0;
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126 this->anonAgg = NULL;
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127 this->lastdc = NULL;
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128 this->lastoffset = 0;
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129 this->docbuf = enclosing->docbuf;
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130 assert(this != enclosing);
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131 }
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132
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133 Scope *Scope::createGlobal(Module *module)
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134 {
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135 Scope *sc;
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136
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137 sc = new Scope();
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138 sc->module = module;
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139 sc->scopesym = new ScopeDsymbol();
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140 sc->scopesym->symtab = new DsymbolTable();
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141
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142 // Add top level package as member of this global scope
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143 Dsymbol *m = module;
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144 while (m->parent)
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145 m = m->parent;
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146 m->addMember(NULL, sc->scopesym, 1);
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147 m->parent = NULL; // got changed by addMember()
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148
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149 // Create the module scope underneath the global scope
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150 sc = sc->push(module);
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151 sc->parent = module;
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152 return sc;
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153 }
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154
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155 Scope *Scope::push()
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156 {
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157 //printf("Scope::push()\n");
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158 Scope *s = new Scope(this);
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159 assert(this != s);
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160 return s;
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161 }
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162
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163 Scope *Scope::push(ScopeDsymbol *ss)
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164 {
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165 //printf("Scope::push(%s)\n", ss->toChars());
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166 Scope *s = push();
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167 s->scopesym = ss;
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168 return s;
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169 }
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170
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171 Scope *Scope::pop()
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172 {
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173 //printf("Scope::pop() %p nofree = %d\n", this, nofree);
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174 Scope *enc = enclosing;
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175
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176 if (enclosing)
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177 enclosing->callSuper |= callSuper;
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178
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179 if (!nofree)
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180 { enclosing = freelist;
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181 freelist = this;
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182 flags |= SCOPEfree;
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183 }
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184
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185 return enc;
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186 }
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187
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188 void Scope::mergeCallSuper(Loc loc, unsigned cs)
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189 {
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190 // This does a primitive flow analysis to support the restrictions
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191 // regarding when and how constructors can appear.
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192 // It merges the results of two paths.
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193 // The two paths are callSuper and cs; the result is merged into callSuper.
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194
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195 if (cs != callSuper)
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196 { int a;
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197 int b;
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198
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199 callSuper |= cs & (CSXany_ctor | CSXlabel);
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200 if (cs & CSXreturn)
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201 {
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202 }
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203 else if (callSuper & CSXreturn)
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204 {
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205 callSuper = cs | (callSuper & (CSXany_ctor | CSXlabel));
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206 }
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207 else
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208 {
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209 a = (cs & (CSXthis_ctor | CSXsuper_ctor)) != 0;
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210 b = (callSuper & (CSXthis_ctor | CSXsuper_ctor)) != 0;
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211 if (a != b)
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212 error(loc, "one path skips constructor");
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213 callSuper |= cs;
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214 }
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215 }
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216 }
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217
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218 Dsymbol *Scope::search(Loc loc, Identifier *ident, Dsymbol **pscopesym)
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219 { Dsymbol *s;
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220 Scope *sc;
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221
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222 //printf("Scope::search(%p, '%s')\n", this, ident->toChars());
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223 if (ident == Id::empty)
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224 {
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225 // Look for module scope
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226 for (sc = this; sc; sc = sc->enclosing)
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227 {
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228 assert(sc != sc->enclosing);
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229 if (sc->scopesym)
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230 {
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diff changeset
231 s = sc->scopesym->isModule();
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diff changeset
232 if (s)
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233 {
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diff changeset
234 //printf("\tfound %s.%s\n", s->parent ? s->parent->toChars() : "", s->toChars());
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diff changeset
235 if (pscopesym)
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diff changeset
236 *pscopesym = sc->scopesym;
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237 return s;
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238 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
239 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
240 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
241 return NULL;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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242 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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243
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
244 for (sc = this; sc; sc = sc->enclosing)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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245 {
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diff changeset
246 assert(sc != sc->enclosing);
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247 if (sc->scopesym)
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248 {
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diff changeset
249 //printf("\tlooking in scopesym '%s', kind = '%s'\n", sc->scopesym->toChars(), sc->scopesym->kind());
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diff changeset
250 s = sc->scopesym->search(loc, ident, 0);
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251 if (s)
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252 {
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diff changeset
253 if ((global.params.warnings ||
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254 global.params.Dversion > 1) &&
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diff changeset
255 ident == Id::length &&
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diff changeset
256 sc->scopesym->isArrayScopeSymbol() &&
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diff changeset
257 sc->enclosing &&
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diff changeset
258 sc->enclosing->search(loc, ident, NULL))
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259 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
260 // WTF ?
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diff changeset
261 if (global.params.warnings)
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diff changeset
262 fprintf(stdmsg, "warning - ");
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diff changeset
263 error(s->loc, "array 'length' hides other 'length' name in outer scope");
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diff changeset
264 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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265
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
266 //printf("\tfound %s.%s, kind = '%s'\n", s->parent ? s->parent->toChars() : "", s->toChars(), s->kind());
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diff changeset
267 if (pscopesym)
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268 *pscopesym = sc->scopesym;
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269 return s;
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270 }
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diff changeset
271 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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272 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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273
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274 return NULL;
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275 }
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276
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diff changeset
277 Dsymbol *Scope::insert(Dsymbol *s)
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278 { Scope *sc;
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279
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diff changeset
280 for (sc = this; sc; sc = sc->enclosing)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
281 {
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diff changeset
282 //printf("\tsc = %p\n", sc);
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diff changeset
283 if (sc->scopesym)
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diff changeset
284 {
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diff changeset
285 //printf("\t\tsc->scopesym = %p\n", sc->scopesym);
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diff changeset
286 if (!sc->scopesym->symtab)
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diff changeset
287 sc->scopesym->symtab = new DsymbolTable();
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diff changeset
288 return sc->scopesym->symtab->insert(s);
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289 }
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diff changeset
290 }
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diff changeset
291 assert(0);
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diff changeset
292 return NULL;
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diff changeset
293 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
294
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
295 /********************************************
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diff changeset
296 * Search enclosing scopes for ClassDeclaration.
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297 */
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diff changeset
298
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diff changeset
299 ClassDeclaration *Scope::getClassScope()
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diff changeset
300 { Scope *sc;
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diff changeset
301
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
302 for (sc = this; sc; sc = sc->enclosing)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
303 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
304 ClassDeclaration *cd;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
305
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
306 if (sc->scopesym)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
307 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
308 cd = sc->scopesym->isClassDeclaration();
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diff changeset
309 if (cd)
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diff changeset
310 return cd;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
311 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
312 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
313 return NULL;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
314 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
315
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
316 /********************************************
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
317 * Search enclosing scopes for ClassDeclaration.
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
318 */
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
319
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
320 AggregateDeclaration *Scope::getStructClassScope()
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
321 { Scope *sc;
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diff changeset
322
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
323 for (sc = this; sc; sc = sc->enclosing)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
324 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
325 AggregateDeclaration *ad;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
326
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
327 if (sc->scopesym)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
328 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
329 ad = sc->scopesym->isClassDeclaration();
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
330 if (ad)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
331 return ad;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
332 else
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
333 { ad = sc->scopesym->isStructDeclaration();
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
334 if (ad)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
335 return ad;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
336 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
337 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
338 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
339 return NULL;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
340 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
341
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
342 /*******************************************
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
343 * For TemplateDeclarations, we need to remember the Scope
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
344 * where it was declared. So mark the Scope as not
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
345 * to be free'd.
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
diff changeset
346 */
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
347
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
348 void Scope::setNoFree()
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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349 { Scope *sc;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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350 //int i = 0;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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351
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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352 //printf("Scope::setNoFree(this = %p)\n", this);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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353 for (sc = this; sc; sc = sc->enclosing)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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354 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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355 //printf("\tsc = %p\n", sc);
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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356 sc->nofree = 1;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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357
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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358 assert(!(flags & SCOPEfree));
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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359 //assert(sc != sc->enclosing);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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360 //assert(!sc->enclosing || sc != sc->enclosing->enclosing);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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361 //if (++i == 10)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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362 //assert(0);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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363 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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364 }