Chris Lattner | 10318b8 | 2008-03-16 00:19:01 +0000 | [diff] [blame^] | 1 | //===--- DeclObjC.cpp - ObjC Declaration AST Node Implementation ----------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the Objective-C related Decl classes. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "clang/AST/DeclObjC.h" |
| 15 | #include "clang/AST/ASTContext.h" |
| 16 | using namespace clang; |
| 17 | |
| 18 | |
| 19 | //===----------------------------------------------------------------------===// |
| 20 | // Objective-C Decl Implementation |
| 21 | //===----------------------------------------------------------------------===// |
| 22 | |
| 23 | void ObjCMethodDecl::setMethodParams(ParmVarDecl **NewParamInfo, |
| 24 | unsigned NumParams) { |
| 25 | assert(ParamInfo == 0 && "Already has param info!"); |
| 26 | |
| 27 | // Zero params -> null pointer. |
| 28 | if (NumParams) { |
| 29 | ParamInfo = new ParmVarDecl*[NumParams]; |
| 30 | memcpy(ParamInfo, NewParamInfo, sizeof(ParmVarDecl*)*NumParams); |
| 31 | NumMethodParams = NumParams; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | ObjCMethodDecl::~ObjCMethodDecl() { |
| 36 | delete[] ParamInfo; |
| 37 | } |
| 38 | |
| 39 | /// ObjCAddInstanceVariablesToClass - Inserts instance variables |
| 40 | /// into ObjCInterfaceDecl's fields. |
| 41 | /// |
| 42 | void ObjCInterfaceDecl::addInstanceVariablesToClass(ObjCIvarDecl **ivars, |
| 43 | unsigned numIvars, |
| 44 | SourceLocation RBrac) { |
| 45 | NumIvars = numIvars; |
| 46 | if (numIvars) { |
| 47 | Ivars = new ObjCIvarDecl*[numIvars]; |
| 48 | memcpy(Ivars, ivars, numIvars*sizeof(ObjCIvarDecl*)); |
| 49 | } |
| 50 | setLocEnd(RBrac); |
| 51 | } |
| 52 | |
| 53 | /// ObjCAddInstanceVariablesToClassImpl - Checks for correctness of Instance |
| 54 | /// Variables (Ivars) relative to what declared in @implementation;s class. |
| 55 | /// Ivars into ObjCImplementationDecl's fields. |
| 56 | /// |
| 57 | void ObjCImplementationDecl::ObjCAddInstanceVariablesToClassImpl( |
| 58 | ObjCIvarDecl **ivars, unsigned numIvars) { |
| 59 | NumIvars = numIvars; |
| 60 | if (numIvars) { |
| 61 | Ivars = new ObjCIvarDecl*[numIvars]; |
| 62 | memcpy(Ivars, ivars, numIvars*sizeof(ObjCIvarDecl*)); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /// addMethods - Insert instance and methods declarations into |
| 67 | /// ObjCInterfaceDecl's InsMethods and ClsMethods fields. |
| 68 | /// |
| 69 | void ObjCInterfaceDecl::addMethods(ObjCMethodDecl **insMethods, |
| 70 | unsigned numInsMembers, |
| 71 | ObjCMethodDecl **clsMethods, |
| 72 | unsigned numClsMembers, |
| 73 | SourceLocation endLoc) { |
| 74 | NumInstanceMethods = numInsMembers; |
| 75 | if (numInsMembers) { |
| 76 | InstanceMethods = new ObjCMethodDecl*[numInsMembers]; |
| 77 | memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjCMethodDecl*)); |
| 78 | } |
| 79 | NumClassMethods = numClsMembers; |
| 80 | if (numClsMembers) { |
| 81 | ClassMethods = new ObjCMethodDecl*[numClsMembers]; |
| 82 | memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjCMethodDecl*)); |
| 83 | } |
| 84 | AtEndLoc = endLoc; |
| 85 | } |
| 86 | |
| 87 | /// addMethods - Insert instance and methods declarations into |
| 88 | /// ObjCProtocolDecl's ProtoInsMethods and ProtoClsMethods fields. |
| 89 | /// |
| 90 | void ObjCProtocolDecl::addMethods(ObjCMethodDecl **insMethods, |
| 91 | unsigned numInsMembers, |
| 92 | ObjCMethodDecl **clsMethods, |
| 93 | unsigned numClsMembers, |
| 94 | SourceLocation endLoc) { |
| 95 | NumInstanceMethods = numInsMembers; |
| 96 | if (numInsMembers) { |
| 97 | InstanceMethods = new ObjCMethodDecl*[numInsMembers]; |
| 98 | memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjCMethodDecl*)); |
| 99 | } |
| 100 | NumClassMethods = numClsMembers; |
| 101 | if (numClsMembers) { |
| 102 | ClassMethods = new ObjCMethodDecl*[numClsMembers]; |
| 103 | memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjCMethodDecl*)); |
| 104 | } |
| 105 | AtEndLoc = endLoc; |
| 106 | } |
| 107 | |
| 108 | /// addMethods - Insert instance and methods declarations into |
| 109 | /// ObjCCategoryDecl's CatInsMethods and CatClsMethods fields. |
| 110 | /// |
| 111 | void ObjCCategoryDecl::addMethods(ObjCMethodDecl **insMethods, |
| 112 | unsigned numInsMembers, |
| 113 | ObjCMethodDecl **clsMethods, |
| 114 | unsigned numClsMembers, |
| 115 | SourceLocation endLoc) { |
| 116 | NumInstanceMethods = numInsMembers; |
| 117 | if (numInsMembers) { |
| 118 | InstanceMethods = new ObjCMethodDecl*[numInsMembers]; |
| 119 | memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjCMethodDecl*)); |
| 120 | } |
| 121 | NumClassMethods = numClsMembers; |
| 122 | if (numClsMembers) { |
| 123 | ClassMethods = new ObjCMethodDecl*[numClsMembers]; |
| 124 | memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjCMethodDecl*)); |
| 125 | } |
| 126 | AtEndLoc = endLoc; |
| 127 | } |
| 128 | |
| 129 | ObjCIvarDecl *ObjCInterfaceDecl::lookupInstanceVariable( |
| 130 | IdentifierInfo *ID, ObjCInterfaceDecl *&clsDeclared) { |
| 131 | ObjCInterfaceDecl* ClassDecl = this; |
| 132 | while (ClassDecl != NULL) { |
| 133 | for (ivar_iterator I = ClassDecl->ivar_begin(), E = ClassDecl->ivar_end(); |
| 134 | I != E; ++I) { |
| 135 | if ((*I)->getIdentifier() == ID) { |
| 136 | clsDeclared = ClassDecl; |
| 137 | return *I; |
| 138 | } |
| 139 | } |
| 140 | ClassDecl = ClassDecl->getSuperClass(); |
| 141 | } |
| 142 | return NULL; |
| 143 | } |
| 144 | |
| 145 | /// lookupInstanceMethod - This method returns an instance method by looking in |
| 146 | /// the class, its categories, and its super classes (using a linear search). |
| 147 | ObjCMethodDecl *ObjCInterfaceDecl::lookupInstanceMethod(Selector Sel) { |
| 148 | ObjCInterfaceDecl* ClassDecl = this; |
| 149 | ObjCMethodDecl *MethodDecl = 0; |
| 150 | |
| 151 | while (ClassDecl != NULL) { |
| 152 | if ((MethodDecl = ClassDecl->getInstanceMethod(Sel))) |
| 153 | return MethodDecl; |
| 154 | |
| 155 | // Didn't find one yet - look through protocols. |
| 156 | ObjCProtocolDecl **protocols = ClassDecl->getReferencedProtocols(); |
| 157 | int numProtocols = ClassDecl->getNumIntfRefProtocols(); |
| 158 | for (int pIdx = 0; pIdx < numProtocols; pIdx++) { |
| 159 | if ((MethodDecl = protocols[pIdx]->getInstanceMethod(Sel))) |
| 160 | return MethodDecl; |
| 161 | } |
| 162 | // Didn't find one yet - now look through categories. |
| 163 | ObjCCategoryDecl *CatDecl = ClassDecl->getCategoryList(); |
| 164 | while (CatDecl) { |
| 165 | if ((MethodDecl = CatDecl->getInstanceMethod(Sel))) |
| 166 | return MethodDecl; |
| 167 | CatDecl = CatDecl->getNextClassCategory(); |
| 168 | } |
| 169 | ClassDecl = ClassDecl->getSuperClass(); |
| 170 | } |
| 171 | return NULL; |
| 172 | } |
| 173 | |
| 174 | // lookupClassMethod - This method returns a class method by looking in the |
| 175 | // class, its categories, and its super classes (using a linear search). |
| 176 | ObjCMethodDecl *ObjCInterfaceDecl::lookupClassMethod(Selector Sel) { |
| 177 | ObjCInterfaceDecl* ClassDecl = this; |
| 178 | ObjCMethodDecl *MethodDecl = 0; |
| 179 | |
| 180 | while (ClassDecl != NULL) { |
| 181 | if ((MethodDecl = ClassDecl->getClassMethod(Sel))) |
| 182 | return MethodDecl; |
| 183 | |
| 184 | // Didn't find one yet - look through protocols. |
| 185 | ObjCProtocolDecl **protocols = ClassDecl->getReferencedProtocols(); |
| 186 | int numProtocols = ClassDecl->getNumIntfRefProtocols(); |
| 187 | for (int pIdx = 0; pIdx < numProtocols; pIdx++) { |
| 188 | if ((MethodDecl = protocols[pIdx]->getClassMethod(Sel))) |
| 189 | return MethodDecl; |
| 190 | } |
| 191 | // Didn't find one yet - now look through categories. |
| 192 | ObjCCategoryDecl *CatDecl = ClassDecl->getCategoryList(); |
| 193 | while (CatDecl) { |
| 194 | if ((MethodDecl = CatDecl->getClassMethod(Sel))) |
| 195 | return MethodDecl; |
| 196 | CatDecl = CatDecl->getNextClassCategory(); |
| 197 | } |
| 198 | ClassDecl = ClassDecl->getSuperClass(); |
| 199 | } |
| 200 | return NULL; |
| 201 | } |
| 202 | |
| 203 | /// lookupInstanceMethod - This method returns an instance method by looking in |
| 204 | /// the class implementation. Unlike interfaces, we don't look outside the |
| 205 | /// implementation. |
| 206 | ObjCMethodDecl *ObjCImplementationDecl::getInstanceMethod(Selector Sel) { |
| 207 | for (instmeth_iterator I = instmeth_begin(), E = instmeth_end(); I != E; ++I) |
| 208 | if ((*I)->getSelector() == Sel) |
| 209 | return *I; |
| 210 | return NULL; |
| 211 | } |
| 212 | |
| 213 | /// lookupClassMethod - This method returns a class method by looking in |
| 214 | /// the class implementation. Unlike interfaces, we don't look outside the |
| 215 | /// implementation. |
| 216 | ObjCMethodDecl *ObjCImplementationDecl::getClassMethod(Selector Sel) { |
| 217 | for (classmeth_iterator I = classmeth_begin(), E = classmeth_end(); |
| 218 | I != E; ++I) |
| 219 | if ((*I)->getSelector() == Sel) |
| 220 | return *I; |
| 221 | return NULL; |
| 222 | } |
| 223 | |
| 224 | // lookupInstanceMethod - This method returns an instance method by looking in |
| 225 | // the class implementation. Unlike interfaces, we don't look outside the |
| 226 | // implementation. |
| 227 | ObjCMethodDecl *ObjCCategoryImplDecl::getInstanceMethod(Selector Sel) { |
| 228 | for (instmeth_iterator I = instmeth_begin(), E = instmeth_end(); I != E; ++I) |
| 229 | if ((*I)->getSelector() == Sel) |
| 230 | return *I; |
| 231 | return NULL; |
| 232 | } |
| 233 | |
| 234 | // lookupClassMethod - This method returns an instance method by looking in |
| 235 | // the class implementation. Unlike interfaces, we don't look outside the |
| 236 | // implementation. |
| 237 | ObjCMethodDecl *ObjCCategoryImplDecl::getClassMethod(Selector Sel) { |
| 238 | for (classmeth_iterator I = classmeth_begin(), E = classmeth_end(); |
| 239 | I != E; ++I) |
| 240 | if ((*I)->getSelector() == Sel) |
| 241 | return *I; |
| 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | // lookupInstanceMethod - Lookup a instance method in the protocol and protocols |
| 246 | // it inherited. |
| 247 | ObjCMethodDecl *ObjCProtocolDecl::lookupInstanceMethod(Selector Sel) { |
| 248 | ObjCMethodDecl *MethodDecl = NULL; |
| 249 | |
| 250 | if ((MethodDecl = getInstanceMethod(Sel))) |
| 251 | return MethodDecl; |
| 252 | |
| 253 | if (getNumReferencedProtocols() > 0) { |
| 254 | ObjCProtocolDecl **RefPDecl = getReferencedProtocols(); |
| 255 | |
| 256 | for (unsigned i = 0; i < getNumReferencedProtocols(); i++) { |
| 257 | if ((MethodDecl = RefPDecl[i]->getInstanceMethod(Sel))) |
| 258 | return MethodDecl; |
| 259 | } |
| 260 | } |
| 261 | return NULL; |
| 262 | } |
| 263 | |
| 264 | // lookupInstanceMethod - Lookup a class method in the protocol and protocols |
| 265 | // it inherited. |
| 266 | ObjCMethodDecl *ObjCProtocolDecl::lookupClassMethod(Selector Sel) { |
| 267 | ObjCMethodDecl *MethodDecl = NULL; |
| 268 | |
| 269 | if ((MethodDecl = getClassMethod(Sel))) |
| 270 | return MethodDecl; |
| 271 | |
| 272 | if (getNumReferencedProtocols() > 0) { |
| 273 | ObjCProtocolDecl **RefPDecl = getReferencedProtocols(); |
| 274 | |
| 275 | for(unsigned i = 0; i < getNumReferencedProtocols(); i++) { |
| 276 | if ((MethodDecl = RefPDecl[i]->getClassMethod(Sel))) |
| 277 | return MethodDecl; |
| 278 | } |
| 279 | } |
| 280 | return NULL; |
| 281 | } |
| 282 | |
| 283 | /// getSynthesizedMethodSize - Compute size of synthesized method name |
| 284 | /// as done be the rewrite. |
| 285 | /// |
| 286 | unsigned ObjCMethodDecl::getSynthesizedMethodSize() const { |
| 287 | // syntesized method name is a concatenation of -/+[class-name selector] |
| 288 | // Get length of this name. |
| 289 | unsigned length = 3; // _I_ or _C_ |
| 290 | length += strlen(getClassInterface()->getName()) +1; // extra for _ |
| 291 | NamedDecl *MethodContext = getMethodContext(); |
| 292 | if (ObjCCategoryImplDecl *CID = |
| 293 | dyn_cast<ObjCCategoryImplDecl>(MethodContext)) |
| 294 | length += strlen(CID->getName()) +1; |
| 295 | length += getSelector().getName().size(); // selector name |
| 296 | return length; |
| 297 | } |
| 298 | |
| 299 | ObjCInterfaceDecl *const ObjCMethodDecl::getClassInterface() const { |
| 300 | if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(MethodContext)) |
| 301 | return ID; |
| 302 | if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(MethodContext)) |
| 303 | return CD->getClassInterface(); |
| 304 | if (ObjCImplementationDecl *IMD = |
| 305 | dyn_cast<ObjCImplementationDecl>(MethodContext)) |
| 306 | return IMD->getClassInterface(); |
| 307 | if (ObjCCategoryImplDecl *CID = |
| 308 | dyn_cast<ObjCCategoryImplDecl>(MethodContext)) |
| 309 | return CID->getClassInterface(); |
| 310 | assert(false && "unknown method context"); |
| 311 | return 0; |
| 312 | } |