annotate dmd/template.h @ 1351:8d501abecd24

Initial (but disabled) fix for ticket #294 , the actual part that fixes the bug is in a #if 0 block as I'm afraid it will cause regressions. I'm most likely not going to be around tonight, and maybe not tomorrow as well, so I'm pushing it in case someone wants to run some serious testing/investigate the problem noted in llvmhelpers.cpp : realignOffset .
author Tomas Lindquist Olsen <tomas.l.olsen gmail com>
date Thu, 14 May 2009 17:20:17 +0200
parents e961851fb8be
children 8026319762be
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 // Compiler implementation of the D programming language
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3 // Copyright (c) 1999-2009 by Digital Mars
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4 // All Rights Reserved
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5 // written by Walter Bright
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6 // http://www.digitalmars.com
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7 // License for redistribution is by either the Artistic License
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8 // in artistic.txt, or the GNU General Public License in gnu.txt.
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9 // See the included readme.txt for details.
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10
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11 #ifndef DMD_TEMPLATE_H
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12 #define DMD_TEMPLATE_H
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13
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14 #ifdef __DMC__
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15 #pragma once
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16 #endif /* __DMC__ */
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17
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18 #include <string>
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19
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20 #include "root.h"
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21 #include "arraytypes.h"
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22 #include "dsymbol.h"
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23 #include "mtype.h"
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24
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25
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26 struct OutBuffer;
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27 struct Identifier;
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28 struct TemplateInstance;
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29 struct TemplateParameter;
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30 struct TemplateTypeParameter;
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31 struct TemplateThisParameter;
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32 struct TemplateValueParameter;
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33 struct TemplateAliasParameter;
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34 struct TemplateTupleParameter;
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35 struct Type;
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36 struct TypeTypeof;
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37 struct Scope;
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38 struct Expression;
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39 struct AliasDeclaration;
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40 struct FuncDeclaration;
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41 struct HdrGenState;
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42 enum MATCH;
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43
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44 struct Tuple : Object
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45 {
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46 Objects objects;
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47
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48 int dyncast() { return DYNCAST_TUPLE; } // kludge for template.isType()
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49 };
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50
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51
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52 struct TemplateDeclaration : ScopeDsymbol
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53 {
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54 TemplateParameters *parameters; // array of TemplateParameter's
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55
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56 TemplateParameters *origParameters; // originals for Ddoc
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57 Expression *constraint;
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58 Array instances; // array of TemplateInstance's
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59
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60 TemplateDeclaration *overnext; // next overloaded TemplateDeclaration
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61 TemplateDeclaration *overroot; // first in overnext list
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62
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63 Scope *scope;
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64 Dsymbol *onemember; // if !=NULL then one member of this template
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65
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66 TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters,
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67 Expression *constraint, Array *decldefs);
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68 Dsymbol *syntaxCopy(Dsymbol *);
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69 void semantic(Scope *sc);
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70 int overloadInsert(Dsymbol *s);
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71 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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72 const char *kind();
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73 char *toChars();
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74
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75 void emitComment(Scope *sc);
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76 // void toDocBuffer(OutBuffer *buf);
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77
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78 MATCH matchWithInstance(TemplateInstance *ti, Objects *atypes, int flag);
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79 MATCH leastAsSpecialized(TemplateDeclaration *td2);
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80
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81 MATCH deduceFunctionTemplateMatch(Loc loc, Objects *targsi, Expression *ethis, Expressions *fargs, Objects *dedargs);
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82 FuncDeclaration *deduceFunctionTemplate(Scope *sc, Loc loc, Objects *targsi, Expression *ethis, Expressions *fargs, int flags = 0);
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83 void declareParameter(Scope *sc, TemplateParameter *tp, Object *o);
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84
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85 TemplateDeclaration *isTemplateDeclaration() { return this; }
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86
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87 TemplateTupleParameter *isVariadic();
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88 int isOverloadable();
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90 #if IN_LLVM
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91 // LDC
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92 std::string intrinsicName;
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93 #endif
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94 };
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95
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96 struct TemplateParameter
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97 {
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98 /* For type-parameter:
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99 * template Foo(ident) // specType is set to NULL
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100 * template Foo(ident : specType)
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101 * For value-parameter:
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102 * template Foo(valType ident) // specValue is set to NULL
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103 * template Foo(valType ident : specValue)
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104 * For alias-parameter:
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105 * template Foo(alias ident)
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106 * For this-parameter:
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107 * template Foo(this ident)
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108 */
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109
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110 Loc loc;
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111 Identifier *ident;
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112
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113 Declaration *sparam;
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114
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115 TemplateParameter(Loc loc, Identifier *ident);
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116
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117 virtual TemplateTypeParameter *isTemplateTypeParameter();
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118 virtual TemplateValueParameter *isTemplateValueParameter();
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119 virtual TemplateAliasParameter *isTemplateAliasParameter();
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120 #if DMDV2
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121 virtual TemplateThisParameter *isTemplateThisParameter();
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122 #endif
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123 virtual TemplateTupleParameter *isTemplateTupleParameter();
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124
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125 virtual TemplateParameter *syntaxCopy() = 0;
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126 virtual void declareParameter(Scope *sc) = 0;
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127 virtual void semantic(Scope *) = 0;
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128 virtual void print(Object *oarg, Object *oded) = 0;
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129 virtual void toCBuffer(OutBuffer *buf, HdrGenState *hgs) = 0;
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130 virtual Object *specialization() = 0;
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131 virtual Object *defaultArg(Loc loc, Scope *sc) = 0;
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132
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133 /* If TemplateParameter's match as far as overloading goes.
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134 */
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135 virtual int overloadMatch(TemplateParameter *) = 0;
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136
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137 /* Match actual argument against parameter.
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138 */
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139 virtual MATCH matchArg(Scope *sc, Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam, int flags = 0) = 0;
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140
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141 /* Create dummy argument based on parameter.
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142 */
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143 virtual void *dummyArg() = 0;
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144 };
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145
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146 struct TemplateTypeParameter : TemplateParameter
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147 {
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148 /* Syntax:
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149 * ident : specType = defaultType
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150 */
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151 Type *specType; // type parameter: if !=NULL, this is the type specialization
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152 Type *defaultType;
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153
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154 TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, Type *defaultType);
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155
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156 TemplateTypeParameter *isTemplateTypeParameter();
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157 TemplateParameter *syntaxCopy();
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158 void declareParameter(Scope *sc);
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159 void semantic(Scope *);
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160 void print(Object *oarg, Object *oded);
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161 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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162 Object *specialization();
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163 Object *defaultArg(Loc loc, Scope *sc);
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164 int overloadMatch(TemplateParameter *);
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165 MATCH matchArg(Scope *sc, Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam, int flags);
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166 void *dummyArg();
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167 };
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168
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169 #if DMDV2
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170 struct TemplateThisParameter : TemplateTypeParameter
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171 {
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172 /* Syntax:
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173 * this ident : specType = defaultType
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174 */
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175 Type *specType; // type parameter: if !=NULL, this is the type specialization
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176 Type *defaultType;
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177
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178 TemplateThisParameter(Loc loc, Identifier *ident, Type *specType, Type *defaultType);
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179
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180 TemplateThisParameter *isTemplateThisParameter();
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181 TemplateParameter *syntaxCopy();
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182 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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183 };
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184 #endif
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185
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186 struct TemplateValueParameter : TemplateParameter
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187 {
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188 /* Syntax:
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189 * valType ident : specValue = defaultValue
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190 */
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191
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192 Type *valType;
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193 Expression *specValue;
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194 Expression *defaultValue;
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195
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196 static Expression *edummy;
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197
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198 TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, Expression *specValue, Expression *defaultValue);
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199
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200 TemplateValueParameter *isTemplateValueParameter();
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201 TemplateParameter *syntaxCopy();
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202 void declareParameter(Scope *sc);
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203 void semantic(Scope *);
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204 void print(Object *oarg, Object *oded);
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205 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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206 Object *specialization();
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207 Object *defaultArg(Loc loc, Scope *sc);
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208 int overloadMatch(TemplateParameter *);
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209 MATCH matchArg(Scope *sc, Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam, int flags);
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210 void *dummyArg();
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211 };
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212
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213 struct TemplateAliasParameter : TemplateParameter
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214 {
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215 /* Syntax:
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216 * specType ident : specAlias = defaultAlias
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217 */
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218
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219 Type *specAliasT;
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220 Dsymbol *specAlias;
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221
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222 Type *defaultAlias;
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223
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224 static Dsymbol *sdummy;
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225
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226 TemplateAliasParameter(Loc loc, Identifier *ident, Type *specAliasT, Type *defaultAlias);
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227
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228 TemplateAliasParameter *isTemplateAliasParameter();
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229 TemplateParameter *syntaxCopy();
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230 void declareParameter(Scope *sc);
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231 void semantic(Scope *);
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232 void print(Object *oarg, Object *oded);
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233 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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234 Object *specialization();
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235 Object *defaultArg(Loc loc, Scope *sc);
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236 int overloadMatch(TemplateParameter *);
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237 MATCH matchArg(Scope *sc, Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam, int flags);
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238 void *dummyArg();
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239 };
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240
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241 struct TemplateTupleParameter : TemplateParameter
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242 {
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243 /* Syntax:
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244 * ident ...
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245 */
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246
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247 TemplateTupleParameter(Loc loc, Identifier *ident);
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248
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249 TemplateTupleParameter *isTemplateTupleParameter();
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250 TemplateParameter *syntaxCopy();
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251 void declareParameter(Scope *sc);
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252 void semantic(Scope *);
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253 void print(Object *oarg, Object *oded);
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254 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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255 Object *specialization();
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256 Object *defaultArg(Loc loc, Scope *sc);
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257 int overloadMatch(TemplateParameter *);
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258 MATCH matchArg(Scope *sc, Objects *tiargs, int i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam, int flags);
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259 void *dummyArg();
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260 };
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261
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262 struct TemplateInstance : ScopeDsymbol
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263 {
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264 /* Given:
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265 * foo!(args) =>
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266 * name = foo
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267 * tiargs = args
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268 */
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269 Identifier *name;
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270 //Array idents;
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271 Objects *tiargs; // Array of Types/Expressions of template
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272 // instance arguments [int*, char, 10*10]
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273
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274 Objects tdtypes; // Array of Types/Expressions corresponding
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275 // to TemplateDeclaration.parameters
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276 // [int, char, 100]
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277
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278 TemplateDeclaration *tempdecl; // referenced by foo.bar.abc
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279 TemplateInstance *inst; // refer to existing instance
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280 ScopeDsymbol *argsym; // argument symbol table
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281 AliasDeclaration *aliasdecl; // !=NULL if instance is an alias for its
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282 // sole member
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283 WithScopeSymbol *withsym; // if a member of a with statement
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284 int semanticdone; // has semantic() been done?
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285 int semantictiargsdone; // has semanticTiargs() been done?
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286 int nest; // for recursion detection
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287 int havetempdecl; // 1 if used second constructor
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288 Dsymbol *isnested; // if referencing local symbols, this is the context
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289 int errors; // 1 if compiled with errors
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290 #ifdef IN_GCC
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291 /* On some targets, it is necessary to know whether a symbol
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292 will be emitted in the output or not before the symbol
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293 is used. This can be different from getModule(). */
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294 Module * objFileModule;
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295 #endif
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296
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297 TemplateInstance(Loc loc, Identifier *temp_id);
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298 TemplateInstance(Loc loc, TemplateDeclaration *tempdecl, Objects *tiargs);
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299 static Objects *arraySyntaxCopy(Objects *objs);
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300 Dsymbol *syntaxCopy(Dsymbol *);
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301 void semantic(Scope *sc);
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302 void semantic2(Scope *sc);
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303 void semantic3(Scope *sc);
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304 void inlineScan();
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305 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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306 Dsymbol *toAlias(); // resolve real symbol
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307 const char *kind();
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308 int oneMember(Dsymbol **ps);
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309 char *toChars();
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310 char *mangle();
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311
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312 #if IN_DMD
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313 void toObjFile(int multiobj); // compile to .obj file
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314 #endif
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315
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316 // Internal
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317 static void semanticTiargs(Loc loc, Scope *sc, Objects *tiargs, int flags);
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318 void semanticTiargs(Scope *sc);
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319 TemplateDeclaration *findTemplateDeclaration(Scope *sc);
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320 TemplateDeclaration *findBestMatch(Scope *sc);
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321 void declareParameters(Scope *sc);
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322 int hasNestedArgs(Objects *tiargs);
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323 Identifier *genIdent();
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324
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325 TemplateInstance *isTemplateInstance() { return this; }
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326 AliasDeclaration *isAliasDeclaration();
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327
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328 #if IN_LLVM
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329 // LDC
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330 TemplateInstance *tinst; // enclosing template instance
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331 Module* tmodule; // module from outermost enclosing template instantiation
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332 Module* emittedInModule; // which module this template instance has been emitted in
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333 void printInstantiationTrace();
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334
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335 void codegen(Ir*);
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336 #endif
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337 };
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338
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339 struct TemplateMixin : TemplateInstance
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340 {
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341 Array *idents;
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342 Type *tqual;
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343
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344 Scope *scope; // for forward referencing
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345
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346 TemplateMixin(Loc loc, Identifier *ident, Type *tqual, Array *idents, Objects *tiargs);
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347 Dsymbol *syntaxCopy(Dsymbol *s);
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348 void semantic(Scope *sc);
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349 void semantic2(Scope *sc);
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350 void semantic3(Scope *sc);
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351 void inlineScan();
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352 const char *kind();
159
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353 int oneMember(Dsymbol **ps);
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354 int hasPointers();
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355 char *toChars();
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356 char *mangle();
159
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357 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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358
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359 #if IN_DMD
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360 void toObjFile(int multiobj); // compile to .obj file
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361 #endif
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362
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363 TemplateMixin *isTemplateMixin() { return this; }
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364
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365 #if IN_LLVM
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366 void codegen(Ir*);
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367 #endif
159
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368 };
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369
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370 Expression *isExpression(Object *o);
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371 Dsymbol *isDsymbol(Object *o);
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372 Type *isType(Object *o);
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373 Tuple *isTuple(Object *o);
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374 Type *getType(Object *o);
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375 Dsymbol *getDsymbol(Object *o);
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376
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377 void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg);
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378
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379 #endif /* DMD_TEMPLATE_H */
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380