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annotate dmd/enum.c @ 1623:1d48eced441f

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Merge DMD r317: bugzilla 3611 Enum forward referencing regression --- dmd/enum.c | 17 +++++++++++++++-- dmd/mtype.c | 4 ++++ 2 files changed, 19 insertions(+), 2 deletions(-)
author Leandro Lucarella <llucax@gmail.com>
date Wed, 06 Jan 2010 15:18:22 -0300
parents 1b24e9c7cc26
children 6c36e3f49b28
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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 (!memtype)
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61 memtype = Type::tint32;
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62
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63 if (symtab) // if already done
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64 { if (!scope)
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65 return; // semantic() already completed
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66 }
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67 else
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68 symtab = new DsymbolTable();
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69
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70 Scope *scx = NULL;
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71 if (scope)
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72 { sc = scope;
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73 scx = scope; // save so we don't make redundant copies
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74 scope = NULL;
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75 }
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76
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77 if (sc->stc & STCdeprecated)
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78 isdeprecated = 1;
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79
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80 parent = sc->scopesym;
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81 memtype = memtype->semantic(loc, sc);
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82
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83 /* Check to see if memtype is forward referenced
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84 */
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85 if (memtype->ty == Tenum)
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86 { EnumDeclaration *sym = (EnumDeclaration *)memtype->toDsymbol(sc);
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87 if (!sym->memtype)
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88 {
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89 error("base enum %s is forward referenced", sym->toChars());
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90 memtype = Type::tint32;
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91 }
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92 }
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93
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94 if (!memtype->isintegral())
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95 { error("base type must be of integral type, not %s", memtype->toChars());
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96 memtype = Type::tint32;
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97 }
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98
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99 t = isAnonymous() ? memtype : type;
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100 symtab = new DsymbolTable();
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101 sce = sc->push(this);
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102 sce->parent = this;
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103 number = 0;
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104 if (!members) // enum ident;
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105 return;
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106 if (members->dim == 0)
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107 error("enum %s must have at least one member", toChars());
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108 int first = 1;
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109 for (i = 0; i < members->dim; i++)
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110 {
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111 EnumMember *em = ((Dsymbol *)members->data[i])->isEnumMember();
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112 Expression *e;
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113
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114 if (!em)
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115 /* The e->semantic(sce) can insert other symbols, such as
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116 * template instances and function literals.
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117 */
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118 continue;
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119
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120 //printf("Enum member '%s'\n",em->toChars());
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121 e = em->value;
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122 if (e)
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123 {
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124 assert(e->dyncast() == DYNCAST_EXPRESSION);
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125 e = e->semantic(sce);
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126 e = e->optimize(WANTvalue);
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127 // Need to copy it because we're going to change the type
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128 e = e->copy();
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129 e = e->implicitCastTo(sc, memtype);
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130 e = e->optimize(WANTvalue);
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131 number = e->toInteger();
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132 e->type = t;
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133 }
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134 else
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135 { // Default is the previous number plus 1
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136
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137 // Check for overflow
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138 if (!first)
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139 {
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140 switch (t->toBasetype()->ty)
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141 {
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142 case Tbool:
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143 if (number == 2) goto Loverflow;
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parents: 1195
diff changeset
144 break;
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parents: 1195
diff changeset
145
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parents: 1195
diff changeset
146 case Tint8:
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parents: 1195
diff changeset
147 if (number == 128) goto Loverflow;
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parents: 1195
diff changeset
148 break;
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parents: 1195
diff changeset
149
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parents: 1195
diff changeset
150 case Tchar:
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parents: 1195
diff changeset
151 case Tuns8:
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parents: 1195
diff changeset
152 if (number == 256) goto Loverflow;
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parents: 1195
diff changeset
153 break;
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parents: 1195
diff changeset
154
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parents: 1195
diff changeset
155 case Tint16:
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parents: 1195
diff changeset
156 if (number == 0x8000) goto Loverflow;
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parents: 1195
diff changeset
157 break;
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parents: 1195
diff changeset
158
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
159 case Twchar:
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parents: 1195
diff changeset
160 case Tuns16:
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parents: 1195
diff changeset
161 if (number == 0x10000) goto Loverflow;
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parents: 1195
diff changeset
162 break;
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parents: 1195
diff changeset
163
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parents: 1195
diff changeset
164 case Tint32:
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parents: 1195
diff changeset
165 if (number == 0x80000000) goto Loverflow;
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parents: 1195
diff changeset
166 break;
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diff changeset
167
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diff changeset
168 case Tdchar:
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parents: 1195
diff changeset
169 case Tuns32:
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parents: 1195
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170 if (number == 0x100000000LL) goto Loverflow;
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parents: 1195
diff changeset
171 break;
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diff changeset
172
1b24e9c7cc26 Use just \n as end of line
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diff changeset
173 case Tint64:
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parents: 1195
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174 if (number == 0x8000000000000000LL) goto Loverflow;
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parents: 1195
diff changeset
175 break;
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diff changeset
176
1b24e9c7cc26 Use just \n as end of line
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diff changeset
177 case Tuns64:
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parents: 1195
diff changeset
178 if (number == 0) goto Loverflow;
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parents: 1195
diff changeset
179 break;
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diff changeset
180
1b24e9c7cc26 Use just \n as end of line
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diff changeset
181 Loverflow:
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diff changeset
182 error("overflow of enum value");
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diff changeset
183 break;
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diff changeset
184
1b24e9c7cc26 Use just \n as end of line
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diff changeset
185 default:
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diff changeset
186 assert(0);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
187 }
1b24e9c7cc26 Use just \n as end of line
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diff changeset
188 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
189 e = new IntegerExp(em->loc, number, t);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
190 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
191 em->value = e;
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diff changeset
192
1b24e9c7cc26 Use just \n as end of line
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diff changeset
193 // Add to symbol table only after evaluating 'value'
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parents: 1195
diff changeset
194 if (isAnonymous())
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
195 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
196 //sce->enclosing->insert(em);
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parents: 1195
diff changeset
197 for (Scope *scx = sce->enclosing; scx; scx = scx->enclosing)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
198 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
199 if (scx->scopesym)
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parents: 1195
diff changeset
200 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
201 if (!scx->scopesym->symtab)
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parents: 1195
diff changeset
202 scx->scopesym->symtab = new DsymbolTable();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
203 em->addMember(sce, scx->scopesym, 1);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
204 break;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
205 }
1b24e9c7cc26 Use just \n as end of line
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diff changeset
206 }
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diff changeset
207 }
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parents: 1195
diff changeset
208 else
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
209 em->addMember(sc, this, 1);
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diff changeset
210
1b24e9c7cc26 Use just \n as end of line
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diff changeset
211 if (first)
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parents: 1195
diff changeset
212 { first = 0;
1b24e9c7cc26 Use just \n as end of line
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diff changeset
213 defaultval = number;
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parents: 1195
diff changeset
214 minval = number;
1b24e9c7cc26 Use just \n as end of line
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diff changeset
215 maxval = number;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
216 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
217 else if (memtype->isunsigned())
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
218 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
219 if (number < minval)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
220 minval = number;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
221 if (number > maxval)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
222 maxval = number;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
223 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
224 else
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
225 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
226 if ((sinteger_t)number < (sinteger_t)minval)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
227 minval = number;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
228 if ((sinteger_t)number > (sinteger_t)maxval)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
229 maxval = number;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
230 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
231
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
232 number++;
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 //printf("defaultval = %lld\n", defaultval);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
235
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
236 sce->pop();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
237 //members->print();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
238 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
239
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
240 int EnumDeclaration::oneMember(Dsymbol **ps)
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 (isAnonymous())
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
243 return Dsymbol::oneMembers(members, ps);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
244 return Dsymbol::oneMember(ps);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
245 }
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 void EnumDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
248 { int i;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
249
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
250 buf->writestring("enum ");
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
251 if (ident)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
252 { buf->writestring(ident->toChars());
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
253 buf->writeByte(' ');
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
254 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
255 if (memtype)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
256 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
257 buf->writestring(": ");
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
258 memtype->toCBuffer(buf, NULL, hgs);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
259 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
260 if (!members)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
261 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
262 buf->writeByte(';');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
263 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
264 return;
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->writenl();
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
267 buf->writeByte('{');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
268 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
269 for (i = 0; i < members->dim; i++)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
270 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
271 EnumMember *em = ((Dsymbol *)members->data[i])->isEnumMember();
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
272 if (!em)
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
273 continue;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
274 //buf->writestring(" ");
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
275 em->toCBuffer(buf, hgs);
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
276 buf->writeByte(',');
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
277 buf->writenl();
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
278 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
279 buf->writeByte('}');
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
280 buf->writenl();
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
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
283 Type *EnumDeclaration::getType()
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
284 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
285 return type;
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
286 }
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
287
1b24e9c7cc26 Use just \n as end of line
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diff changeset
288 const char *EnumDeclaration::kind()
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
289 {
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
290 return "enum";
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
291 }
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
diff changeset
292
1b24e9c7cc26 Use just \n as end of line
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parents: 1195
diff changeset
293 int EnumDeclaration::isDeprecated()
1b24e9c7cc26 Use just \n as end of line
Leandro Lucarella <llucax@gmail.com>
parents: 1195
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294 {
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295 return isdeprecated;
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296 }
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297
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298 /********************************* EnumMember ****************************/
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299
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300 EnumMember::EnumMember(Loc loc, Identifier *id, Expression *value)
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301 : Dsymbol(id)
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302 {
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303 this->value = value;
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304 this->loc = loc;
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305 }
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306
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307 Dsymbol *EnumMember::syntaxCopy(Dsymbol *s)
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308 {
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309 Expression *e = NULL;
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310 if (value)
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311 e = value->syntaxCopy();
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312
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313 EnumMember *em;
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314 if (s)
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315 { em = (EnumMember *)s;
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316 em->loc = loc;
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317 em->value = e;
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318 }
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319 else
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320 em = new EnumMember(loc, ident, e);
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321 return em;
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322 }
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323
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324 void EnumMember::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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325 {
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326 buf->writestring(ident->toChars());
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327 if (value)
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328 {
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329 buf->writestring(" = ");
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330 value->toCBuffer(buf, hgs);
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331 }
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332 }
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333
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334 const char *EnumMember::kind()
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335 {
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336 return "enum member";
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337 }
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338
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339