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modern objc rewriter: mode metadata stuff. wip. 

llvm-svn: 150030
This commit is contained in:
Fariborz Jahanian 2012-02-08 00:50:52 +00:00
parent 5ece54ce3f
commit 48985804cd
1 changed files with 45 additions and 132 deletions
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177
clang/lib/Rewrite/RewriteModernObjC.cpp
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@ -5347,27 +5347,11 @@ static void Write__prop_list_t_initializer(RewriteModernObjC &RewriteObj,
void RewriteModernObjC::RewriteObjCProtocolMetaData(
ObjCProtocolDecl *PDecl, StringRef prefix,
StringRef ClassName, std::string &Result) {
static bool objc_protocol_methods = false;
WriteModernMetadataDeclarations(Result);
// Output struct protocol_methods holder of method selector and type.
if (!objc_protocol_methods && PDecl->hasDefinition()) {
/* struct protocol_methods {
SEL _cmd;
char *method_types;
}
*/
Result += "\nstruct _protocol_methods {\n";
Result += "\tstruct objc_selector *_cmd;\n";
Result += "\tchar *method_types;\n";
Result += "};\n";
objc_protocol_methods = true;
}
// Do not synthesize the protocol more than once.
if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl()))
return;
WriteModernMetadataDeclarations(Result);
if (ObjCProtocolDecl *Def = PDecl->getDefinition())
PDecl = Def;
@ -5422,128 +5406,57 @@ void RewriteModernObjC::RewriteObjCProtocolMetaData(
/* Container */0,
"_OBJC_PROTOCOL_PROPERTIES_",
PDecl->getNameAsString());
// ====================================Legacy ABI ====================================================
if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
unsigned NumMethods = std::distance(PDecl->instmeth_begin(),
PDecl->instmeth_end());
/* struct _objc_protocol_method_list {
int protocol_method_count;
struct protocol_methods protocols[];
}
*/
Result += "\nstatic struct {\n";
Result += "\tint protocol_method_count;\n";
Result += "\tstruct _protocol_methods protocol_methods[";
Result += utostr(NumMethods);
Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_";
Result += PDecl->getNameAsString();
Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= "
"{\n\t" + utostr(NumMethods) + "\n";
// Output instance methods declared in this protocol.
for (ObjCProtocolDecl::instmeth_iterator
I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
I != E; ++I) {
if (I == PDecl->instmeth_begin())
Result += "\t ,{{(struct objc_selector *)\"";
else
Result += "\t ,{(struct objc_selector *)\"";
Result += (*I)->getSelector().getAsString();
std::string MethodTypeString;
Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
Result += "\", \"";
Result += MethodTypeString;
Result += "\"}\n";
}
Result += "\t }\n};\n";
}
// Output class methods declared in this protocol.
unsigned NumMethods = std::distance(PDecl->classmeth_begin(),
PDecl->classmeth_end());
if (NumMethods > 0) {
/* struct _objc_protocol_method_list {
int protocol_method_count;
struct protocol_methods protocols[];
}
*/
Result += "\nstatic struct {\n";
Result += "\tint protocol_method_count;\n";
Result += "\tstruct _protocol_methods protocol_methods[";
Result += utostr(NumMethods);
Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_";
Result += PDecl->getNameAsString();
Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
"{\n\t";
Result += utostr(NumMethods);
Result += "\n";
// Output instance methods declared in this protocol.
for (ObjCProtocolDecl::classmeth_iterator
I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
I != E; ++I) {
if (I == PDecl->classmeth_begin())
Result += "\t ,{{(struct objc_selector *)\"";
else
Result += "\t ,{(struct objc_selector *)\"";
Result += (*I)->getSelector().getAsString();
std::string MethodTypeString;
Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
Result += "\", \"";
Result += MethodTypeString;
Result += "\"}\n";
}
Result += "\t }\n};\n";
}
// Output:
/* struct _objc_protocol {
// Objective-C 1.0 extensions
struct _objc_protocol_extension *isa;
char *protocol_name;
struct _objc_protocol **protocol_list;
struct _objc_protocol_method_list *instance_methods;
struct _objc_protocol_method_list *class_methods;
};
*/
static bool objc_protocol = false;
if (!objc_protocol) {
Result += "\nstruct _objc_protocol {\n";
Result += "\tstruct _objc_protocol_extension *isa;\n";
Result += "\tchar *protocol_name;\n";
Result += "\tstruct _objc_protocol **protocol_list;\n";
Result += "\tstruct _objc_protocol_method_list *instance_methods;\n";
Result += "\tstruct _objc_protocol_method_list *class_methods;\n";
Result += "};\n";
objc_protocol = true;
}
Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_";
// Writer out root metadata for current protocol: struct _protocol_t
Result += "\nstatic struct _protocol_t _OBJC_PROTOCOL_";
Result += PDecl->getNameAsString();
Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= "
"{\n\t0, \"";
Result += PDecl->getNameAsString();
Result += "\", 0, ";
if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
Result += PDecl->getNameAsString();
Result += ", ";
Result += " __attribute__ ((used, section (\"__DATA,__datacoal_nt,coalesced\"))) = {\n";
Result += "\t0,\n"; // id is; is null
Result += "\t\""; Result += PDecl->getNameAsString(); Result += "\",\n";
// FIXME. const struct _protocol_list_t * protocol_list; // super protocols
Result += "\t0,\n";
if (InstanceMethods.size() > 0) {
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
Result += PDecl->getNameAsString(); Result += ",\n";
}
else
Result += "0, ";
if (PDecl->classmeth_begin() != PDecl->classmeth_end()) {
Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_";
Result += PDecl->getNameAsString();
Result += "\n";
Result += "\t0,\n";
if (ClassMethods.size() > 0) {
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_CLASS_METHODS_";
Result += PDecl->getNameAsString(); Result += ",\n";
}
else
Result += "0\n";
Result += "};\n";
Result += "\t0,\n";
if (OptInstanceMethods.size() > 0) {
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_";
Result += PDecl->getNameAsString(); Result += ",\n";
}
else
Result += "\t0,\n";
if (OptClassMethods.size() > 0) {
Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_CLASS_METHODS_";
Result += PDecl->getNameAsString(); Result += ",\n";
}
else
Result += "\t0,\n";
if (ProtocolProperties.size() > 0) {
Result += "\t(const struct _prop_list_t *)&_OBJC_PROTOCOL_PROPERTIES_";
Result += PDecl->getNameAsString(); Result += ",\n";
}
else
Result += "\t0,\n";
Result += "\t"; Result += "sizeof(_protocol_t)"; Result += ",\n";
Result += "\t0,\n";
// FIXME. // const char ** extendedMethodTypes;
Result += "\t0\n};\n";
// Mark this protocol as having been generated.
if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()))
llvm_unreachable("protocol already synthesized");