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annotate dmd/enum.c @ 1617:6820110de311

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Merge DMD r301: a little refactor and harmonize --- dmd/declaration.h | 1 + dmd/func.c | 30 ++++++++++++++++++++++++++++++ dmd/mtype.c | 51 +++++++++++++++++++++++++++++++++++++-------------- 3 files changed, 68 insertions(+), 14 deletions(-)
author Leandro Lucarella <llucax@gmail.com>
date Wed, 06 Jan 2010 15:18:21 -0300
parents 1b24e9c7cc26
children 1d48eced441f
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1606
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1
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2 // Copyright (c) 1999-2009 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 #include "enum.h"
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15 #include "mtype.h"
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16 #include "scope.h"
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17 #include "declaration.h"
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18
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19 /********************************* EnumDeclaration ****************************/
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20
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21 EnumDeclaration::EnumDeclaration(Loc loc, Identifier *id, Type *memtype)
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22 : ScopeDsymbol(id)
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23 {
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24 this->loc = loc;
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25 type = new TypeEnum(this);
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26 this->memtype = memtype;
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27 maxval = 0;
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28 minval = 0;
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29 defaultval = 0;
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30 #if IN_DMD
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31 sinit = NULL;
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32 #endif
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33 isdeprecated = 0;
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34 }
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35
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36 Dsymbol *EnumDeclaration::syntaxCopy(Dsymbol *s)
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37 {
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38 Type *t = NULL;
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39 if (memtype)
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40 t = memtype->syntaxCopy();
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41
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42 EnumDeclaration *ed;
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43 if (s)
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44 { ed = (EnumDeclaration *)s;
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45 ed->memtype = t;
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46 }
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47 else
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48 ed = new EnumDeclaration(loc, ident, t);
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49 ScopeDsymbol::syntaxCopy(ed);
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50 return ed;
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51 }
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52
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53 void EnumDeclaration::semantic(Scope *sc)
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54 { int i;
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55 uinteger_t number;
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56 Type *t;
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57 Scope *sce;
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58
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59 //printf("EnumDeclaration::semantic(sd = %p, '%s')\n", sc->scopesym, sc->scopesym->toChars());
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60 if (symtab) // if already done
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61 return;
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62 if (!memtype)
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63 memtype = Type::tint32;
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64 if (sc->stc & STCdeprecated)
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65 isdeprecated = 1;
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66
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67 parent = sc->scopesym;
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68 memtype = memtype->semantic(loc, sc);
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69
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70 /* Check to see if memtype is forward referenced
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71 */
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72 if (memtype->ty == Tenum)
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73 { EnumDeclaration *sym = (EnumDeclaration *)memtype->toDsymbol(sc);
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74 if (!sym->memtype)
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75 {
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76 error("base enum %s is forward referenced", sym->toChars());
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77 memtype = Type::tint32;
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78 }
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79 }
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80
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81 if (!memtype->isintegral())
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82 { error("base type must be of integral type, not %s", memtype->toChars());
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83 memtype = Type::tint32;
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84 }
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85
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86 t = isAnonymous() ? memtype : type;
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87 symtab = new DsymbolTable();
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88 sce = sc->push(this);
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89 sce->parent = this;
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90 number = 0;
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91 if (!members) // enum ident;
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92 return;
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93 if (members->dim == 0)
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94 error("enum %s must have at least one member", toChars());
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95 int first = 1;
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96 for (i = 0; i < members->dim; i++)
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97 {
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98 EnumMember *em = ((Dsymbol *)members->data[i])->isEnumMember();
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99 Expression *e;
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100
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101 if (!em)
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102 /* The e->semantic(sce) can insert other symbols, such as
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103 * template instances and function literals.
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104 */
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105 continue;
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106
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107 //printf("Enum member '%s'\n",em->toChars());
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108 e = em->value;
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109 if (e)
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110 {
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111 assert(e->dyncast() == DYNCAST_EXPRESSION);
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112 e = e->semantic(sce);
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113 e = e->optimize(WANTvalue);
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114 // Need to copy it because we're going to change the type
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115 e = e->copy();
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116 e = e->implicitCastTo(sc, memtype);
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117 e = e->optimize(WANTvalue);
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118 number = e->toInteger();
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119 e->type = t;
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120 }
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121 else
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122 { // Default is the previous number plus 1
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123
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124 // Check for overflow
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125 if (!first)
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126 {
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127 switch (t->toBasetype()->ty)
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128 {
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129 case Tbool:
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130 if (number == 2) goto Loverflow;
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131 break;
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132
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133 case Tint8:
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134 if (number == 128) goto Loverflow;
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135 break;
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136
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137 case Tchar:
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138 case Tuns8:
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139 if (number == 256) goto Loverflow;
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140 break;
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141
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142 case Tint16:
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143 if (number == 0x8000) goto Loverflow;
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144 break;
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parents: 1195
diff changeset
145
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diff changeset
146 case Twchar:
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parents: 1195
diff changeset
147 case Tuns16:
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148 if (number == 0x10000) goto Loverflow;
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diff changeset
149 break;
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diff changeset
150
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parents: 1195
diff changeset
151 case Tint32:
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152 if (number == 0x80000000) goto Loverflow;
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diff changeset
153 break;
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154
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diff changeset
155 case Tdchar:
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parents: 1195
diff changeset
156 case Tuns32:
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parents: 1195
diff changeset
157 if (number == 0x100000000LL) goto Loverflow;
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parents: 1195
diff changeset
158 break;
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parents: 1195
diff changeset
159
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diff changeset
160 case Tint64:
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parents: 1195
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161 if (number == 0x8000000000000000LL) goto Loverflow;
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parents: 1195
diff changeset
162 break;
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diff changeset
163
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parents: 1195
diff changeset
164 case Tuns64:
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165 if (number == 0) goto Loverflow;
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diff changeset
166 break;
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167
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diff changeset
168 Loverflow:
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diff changeset
169 error("overflow of enum value");
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170 break;
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171
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diff changeset
172 default:
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173 assert(0);
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parents: 1195
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174 }
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diff changeset
175 }
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diff changeset
176 e = new IntegerExp(em->loc, number, t);
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diff changeset
177 }
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178 em->value = e;
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179
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180 // Add to symbol table only after evaluating 'value'
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181 if (isAnonymous())
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182 {
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diff changeset
183 //sce->enclosing->insert(em);
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diff changeset
184 for (Scope *scx = sce->enclosing; scx; scx = scx->enclosing)
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parents: 1195
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185 {
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diff changeset
186 if (scx->scopesym)
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diff changeset
187 {
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diff changeset
188 if (!scx->scopesym->symtab)
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diff changeset
189 scx->scopesym->symtab = new DsymbolTable();
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diff changeset
190 em->addMember(sce, scx->scopesym, 1);
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parents: 1195
diff changeset
191 break;
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parents: 1195
diff changeset
192 }
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diff changeset
193 }
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194 }
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diff changeset
195 else
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diff changeset
196 em->addMember(sc, this, 1);
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197
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198 if (first)
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199 { first = 0;
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diff changeset
200 defaultval = number;
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201 minval = number;
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202 maxval = number;
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203 }
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diff changeset
204 else if (memtype->isunsigned())
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diff changeset
205 {
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diff changeset
206 if (number < minval)
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diff changeset
207 minval = number;
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diff changeset
208 if (number > maxval)
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diff changeset
209 maxval = number;
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210 }
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diff changeset
211 else
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diff changeset
212 {
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diff changeset
213 if ((sinteger_t)number < (sinteger_t)minval)
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parents: 1195
diff changeset
214 minval = number;
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diff changeset
215 if ((sinteger_t)number > (sinteger_t)maxval)
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parents: 1195
diff changeset
216 maxval = number;
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parents: 1195
diff changeset
217 }
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parents: 1195
diff changeset
218
1b24e9c7cc26 Use just \n as end of line
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diff changeset
219 number++;
1b24e9c7cc26 Use just \n as end of line
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220 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
221 //printf("defaultval = %lld\n", defaultval);
1b24e9c7cc26 Use just \n as end of line
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diff changeset
222
1b24e9c7cc26 Use just \n as end of line
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diff changeset
223 sce->pop();
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parents: 1195
diff changeset
224 //members->print();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
225 }
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diff changeset
226
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diff changeset
227 int EnumDeclaration::oneMember(Dsymbol **ps)
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diff changeset
228 {
1b24e9c7cc26 Use just \n as end of line
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diff changeset
229 if (isAnonymous())
1b24e9c7cc26 Use just \n as end of line
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diff changeset
230 return Dsymbol::oneMembers(members, ps);
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diff changeset
231 return Dsymbol::oneMember(ps);
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parents: 1195
diff changeset
232 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
233
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
234 void EnumDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
235 { int i;
1b24e9c7cc26 Use just \n as end of line
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diff changeset
236
1b24e9c7cc26 Use just \n as end of line
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diff changeset
237 buf->writestring("enum ");
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
238 if (ident)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
239 { buf->writestring(ident->toChars());
1b24e9c7cc26 Use just \n as end of line
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diff changeset
240 buf->writeByte(' ');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
241 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
242 if (memtype)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
243 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
244 buf->writestring(": ");
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
245 memtype->toCBuffer(buf, NULL, hgs);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
246 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
247 if (!members)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
248 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
249 buf->writeByte(';');
1b24e9c7cc26 Use just \n as end of line
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diff changeset
250 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
251 return;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
252 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
253 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
254 buf->writeByte('{');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
255 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
256 for (i = 0; i < members->dim; i++)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
257 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
258 EnumMember *em = ((Dsymbol *)members->data[i])->isEnumMember();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
259 if (!em)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
260 continue;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
261 //buf->writestring(" ");
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
262 em->toCBuffer(buf, hgs);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
263 buf->writeByte(',');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
264 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
265 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
266 buf->writeByte('}');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
267 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
268 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
269
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
270 Type *EnumDeclaration::getType()
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
271 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
272 return type;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
273 }
1b24e9c7cc26 Use just \n as end of line
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diff changeset
274
1b24e9c7cc26 Use just \n as end of line
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diff changeset
275 const char *EnumDeclaration::kind()
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
276 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
277 return "enum";
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
278 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
279
1b24e9c7cc26 Use just \n as end of line
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diff changeset
280 int EnumDeclaration::isDeprecated()
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
281 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
282 return isdeprecated;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
283 }
1b24e9c7cc26 Use just \n as end of line
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diff changeset
284
1b24e9c7cc26 Use just \n as end of line
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diff changeset
285 /********************************* EnumMember ****************************/
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diff changeset
286
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
287 EnumMember::EnumMember(Loc loc, Identifier *id, Expression *value)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
288 : Dsymbol(id)
1b24e9c7cc26 Use just \n as end of line
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diff changeset
289 {
1b24e9c7cc26 Use just \n as end of line
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diff changeset
290 this->value = value;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
291 this->loc = loc;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
292 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
293
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
294 Dsymbol *EnumMember::syntaxCopy(Dsymbol *s)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
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295 {
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296 Expression *e = NULL;
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297 if (value)
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298 e = value->syntaxCopy();
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299
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300 EnumMember *em;
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301 if (s)
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302 { em = (EnumMember *)s;
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303 em->loc = loc;
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304 em->value = e;
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305 }
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306 else
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307 em = new EnumMember(loc, ident, e);
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308 return em;
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309 }
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310
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311 void EnumMember::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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312 {
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313 buf->writestring(ident->toChars());
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314 if (value)
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315 {
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316 buf->writestring(" = ");
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317 value->toCBuffer(buf, hgs);
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318 }
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319 }
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320
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321 const char *EnumMember::kind()
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322 {
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323 return "enum member";
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324 }
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325
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326