diff options
| author | dim <dim@FreeBSD.org> | 2014-03-21 17:53:59 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2014-03-21 17:53:59 +0000 |
| commit | 9cedb8bb69b89b0f0c529937247a6a80cabdbaec (patch) | |
| tree | c978f0e9ec1ab92dc8123783f30b08a7fd1e2a39 /contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp | |
| parent | 03fdc2934eb61c44c049a02b02aa974cfdd8a0eb (diff) | |
| download | FreeBSD-src-9cedb8bb69b89b0f0c529937247a6a80cabdbaec.zip FreeBSD-src-9cedb8bb69b89b0f0c529937247a6a80cabdbaec.tar.gz | |
MFC 261991:
Upgrade our copy of llvm/clang to 3.4 release. This version supports
all of the features in the current working draft of the upcoming C++
standard, provisionally named C++1y.
The code generator's performance is greatly increased, and the loop
auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The
PowerPC backend has made several major improvements to code generation
quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ
backends have all seen major feature work.
Release notes for llvm and clang can be found here:
<http://llvm.org/releases/3.4/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html>
MFC 262121 (by emaste):
Update lldb for clang/llvm 3.4 import
This commit largely restores the lldb source to the upstream r196259
snapshot with the addition of threaded inferior support and a few bug
fixes.
Specific upstream lldb revisions restored include:
SVN git
181387 779e6ac
181703 7bef4e2
182099 b31044e
182650 f2dcf35
182683 0d91b80
183862 15c1774
183929 99447a6
184177 0b2934b
184948 4dc3761
184954 007e7bc
186990 eebd175
Sponsored by: DARPA, AFRL
MFC 262186 (by emaste):
Fix mismerge in r262121
A break statement was lost in the merge. The error had no functional
impact, but restore it to reduce the diff against upstream.
MFC 262303:
Pull in r197521 from upstream clang trunk (by rdivacky):
Use the integrated assembler by default on FreeBSD/ppc and ppc64.
Requested by: jhibbits
MFC 262611:
Pull in r196874 from upstream llvm trunk:
Fix a crash that occurs when PWD is invalid.
MCJIT needs to be able to run in hostile environments, even when PWD
is invalid. There's no need to crash MCJIT in this case.
The obvious fix is to simply leave MCContext's CompilationDir empty
when PWD can't be determined. This way, MCJIT clients,
and other clients that link with LLVM don't need a valid working directory.
If we do want to guarantee valid CompilationDir, that should be done
only for clients of getCompilationDir(). This is as simple as checking
for an empty string.
The only current use of getCompilationDir is EmitGenDwarfInfo, which
won't conceivably run with an invalid working dir. However, in the
purely hypothetically and untestable case that this happens, the
AT_comp_dir will be omitted from the compilation_unit DIE.
This should help fix assertions occurring with ports-mgmt/tinderbox,
when it is using jails, and sometimes invalidates clang's current
working directory.
Reported by: decke
MFC 262809:
Pull in r203007 from upstream clang trunk:
Don't produce an alias between destructors with different calling conventions.
Fixes pr19007.
(Please note that is an LLVM PR identifier, not a FreeBSD one.)
This should fix Firefox and/or libxul crashes (due to problems with
regparm/stdcall calling conventions) on i386.
Reported by: multiple users on freebsd-current
PR: bin/187103
MFC 263048:
Repair recognition of "CC" as an alias for the C++ compiler, since it
was silently broken by upstream for a Windows-specific use-case.
Apparently some versions of CMake still rely on this archaic feature...
Reported by: rakuco
MFC 263049:
Garbage collect the old way of adding the libstdc++ include directories
in clang's InitHeaderSearch.cpp. This has been superseded by David
Chisnall's commit in r255321.
Moreover, if libc++ is used, the libstdc++ include directories should
not be in the search path at all. These directories are now only used
if you pass -stdlib=libstdc++.
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp b/contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp new file mode 100644 index 0000000..16d89f8 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Index/USRGeneration.cpp @@ -0,0 +1,803 @@ +//===- USRGeneration.cpp - Routines for USR generation --------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/Index/USRGeneration.h" +#include "clang/AST/ASTContext.h" +#include "clang/AST/DeclTemplate.h" +#include "clang/AST/DeclVisitor.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/raw_ostream.h" + +using namespace clang; +using namespace clang::index; + +//===----------------------------------------------------------------------===// +// USR generation. +//===----------------------------------------------------------------------===// + +namespace { +class USRGenerator : public ConstDeclVisitor<USRGenerator> { + SmallVectorImpl<char> &Buf; + llvm::raw_svector_ostream Out; + bool IgnoreResults; + ASTContext *Context; + bool generatedLoc; + + llvm::DenseMap<const Type *, unsigned> TypeSubstitutions; + +public: + explicit USRGenerator(ASTContext *Ctx, SmallVectorImpl<char> &Buf) + : Buf(Buf), + Out(Buf), + IgnoreResults(false), + Context(Ctx), + generatedLoc(false) + { + // Add the USR space prefix. + Out << getUSRSpacePrefix(); + } + + bool ignoreResults() const { return IgnoreResults; } + + // Visitation methods from generating USRs from AST elements. + void VisitDeclContext(const DeclContext *D); + void VisitFieldDecl(const FieldDecl *D); + void VisitFunctionDecl(const FunctionDecl *D); + void VisitNamedDecl(const NamedDecl *D); + void VisitNamespaceDecl(const NamespaceDecl *D); + void VisitNamespaceAliasDecl(const NamespaceAliasDecl *D); + void VisitFunctionTemplateDecl(const FunctionTemplateDecl *D); + void VisitClassTemplateDecl(const ClassTemplateDecl *D); + void VisitObjCContainerDecl(const ObjCContainerDecl *CD); + void VisitObjCMethodDecl(const ObjCMethodDecl *MD); + void VisitObjCPropertyDecl(const ObjCPropertyDecl *D); + void VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D); + void VisitTagDecl(const TagDecl *D); + void VisitTypedefDecl(const TypedefDecl *D); + void VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D); + void VisitVarDecl(const VarDecl *D); + void VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl *D); + void VisitTemplateTemplateParmDecl(const TemplateTemplateParmDecl *D); + void VisitLinkageSpecDecl(const LinkageSpecDecl *D) { + IgnoreResults = true; + } + void VisitUsingDirectiveDecl(const UsingDirectiveDecl *D) { + IgnoreResults = true; + } + void VisitUsingDecl(const UsingDecl *D) { + IgnoreResults = true; + } + void VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D) { + IgnoreResults = true; + } + void VisitUnresolvedUsingTypenameDecl(const UnresolvedUsingTypenameDecl *D) { + IgnoreResults = true; + } + + /// Generate the string component containing the location of the + /// declaration. + bool GenLoc(const Decl *D); + + /// String generation methods used both by the visitation methods + /// and from other clients that want to directly generate USRs. These + /// methods do not construct complete USRs (which incorporate the parents + /// of an AST element), but only the fragments concerning the AST element + /// itself. + + /// Generate a USR for an Objective-C class. + void GenObjCClass(StringRef cls) { + generateUSRForObjCClass(cls, Out); + } + /// Generate a USR for an Objective-C class category. + void GenObjCCategory(StringRef cls, StringRef cat) { + generateUSRForObjCCategory(cls, cat, Out); + } + /// Generate a USR fragment for an Objective-C instance variable. The + /// complete USR can be created by concatenating the USR for the + /// encompassing class with this USR fragment. + void GenObjCIvar(StringRef ivar) { + generateUSRForObjCIvar(ivar, Out); + } + /// Generate a USR fragment for an Objective-C method. + void GenObjCMethod(StringRef sel, bool isInstanceMethod) { + generateUSRForObjCMethod(sel, isInstanceMethod, Out); + } + /// Generate a USR fragment for an Objective-C property. + void GenObjCProperty(StringRef prop) { + generateUSRForObjCProperty(prop, Out); + } + /// Generate a USR for an Objective-C protocol. + void GenObjCProtocol(StringRef prot) { + generateUSRForObjCProtocol(prot, Out); + } + + void VisitType(QualType T); + void VisitTemplateParameterList(const TemplateParameterList *Params); + void VisitTemplateName(TemplateName Name); + void VisitTemplateArgument(const TemplateArgument &Arg); + + /// Emit a Decl's name using NamedDecl::printName() and return true if + /// the decl had no name. + bool EmitDeclName(const NamedDecl *D); +}; + +} // end anonymous namespace + +//===----------------------------------------------------------------------===// +// Generating USRs from ASTS. +//===----------------------------------------------------------------------===// + +bool USRGenerator::EmitDeclName(const NamedDecl *D) { + Out.flush(); + const unsigned startSize = Buf.size(); + D->printName(Out); + Out.flush(); + const unsigned endSize = Buf.size(); + return startSize == endSize; +} + +static inline bool ShouldGenerateLocation(const NamedDecl *D) { + return !D->isExternallyVisible(); +} + +void USRGenerator::VisitDeclContext(const DeclContext *DC) { + if (const NamedDecl *D = dyn_cast<NamedDecl>(DC)) + Visit(D); +} + +void USRGenerator::VisitFieldDecl(const FieldDecl *D) { + // The USR for an ivar declared in a class extension is based on the + // ObjCInterfaceDecl, not the ObjCCategoryDecl. + if (const ObjCInterfaceDecl *ID = Context->getObjContainingInterface(D)) + Visit(ID); + else + VisitDeclContext(D->getDeclContext()); + Out << (isa<ObjCIvarDecl>(D) ? "@" : "@FI@"); + if (EmitDeclName(D)) { + // Bit fields can be anonymous. + IgnoreResults = true; + return; + } +} + +void USRGenerator::VisitFunctionDecl(const FunctionDecl *D) { + if (ShouldGenerateLocation(D) && GenLoc(D)) + return; + + VisitDeclContext(D->getDeclContext()); + if (FunctionTemplateDecl *FunTmpl = D->getDescribedFunctionTemplate()) { + Out << "@FT@"; + VisitTemplateParameterList(FunTmpl->getTemplateParameters()); + } else + Out << "@F@"; + D->printName(Out); + + ASTContext &Ctx = *Context; + if (!Ctx.getLangOpts().CPlusPlus || D->isExternC()) + return; + + if (const TemplateArgumentList * + SpecArgs = D->getTemplateSpecializationArgs()) { + Out << '<'; + for (unsigned I = 0, N = SpecArgs->size(); I != N; ++I) { + Out << '#'; + VisitTemplateArgument(SpecArgs->get(I)); + } + Out << '>'; + } + + // Mangle in type information for the arguments. + for (FunctionDecl::param_const_iterator I = D->param_begin(), + E = D->param_end(); + I != E; ++I) { + Out << '#'; + if (ParmVarDecl *PD = *I) + VisitType(PD->getType()); + } + if (D->isVariadic()) + Out << '.'; + Out << '#'; + if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { + if (MD->isStatic()) + Out << 'S'; + if (unsigned quals = MD->getTypeQualifiers()) + Out << (char)('0' + quals); + } +} + +void USRGenerator::VisitNamedDecl(const NamedDecl *D) { + VisitDeclContext(D->getDeclContext()); + Out << "@"; + + if (EmitDeclName(D)) { + // The string can be empty if the declaration has no name; e.g., it is + // the ParmDecl with no name for declaration of a function pointer type, + // e.g.: void (*f)(void *); + // In this case, don't generate a USR. + IgnoreResults = true; + } +} + +void USRGenerator::VisitVarDecl(const VarDecl *D) { + // VarDecls can be declared 'extern' within a function or method body, + // but their enclosing DeclContext is the function, not the TU. We need + // to check the storage class to correctly generate the USR. + if (ShouldGenerateLocation(D) && GenLoc(D)) + return; + + VisitDeclContext(D->getDeclContext()); + + // Variables always have simple names. + StringRef s = D->getName(); + + // The string can be empty if the declaration has no name; e.g., it is + // the ParmDecl with no name for declaration of a function pointer type, e.g.: + // void (*f)(void *); + // In this case, don't generate a USR. + if (s.empty()) + IgnoreResults = true; + else + Out << '@' << s; +} + +void USRGenerator::VisitNonTypeTemplateParmDecl( + const NonTypeTemplateParmDecl *D) { + GenLoc(D); + return; +} + +void USRGenerator::VisitTemplateTemplateParmDecl( + const TemplateTemplateParmDecl *D) { + GenLoc(D); + return; +} + +void USRGenerator::VisitNamespaceDecl(const NamespaceDecl *D) { + if (D->isAnonymousNamespace()) { + Out << "@aN"; + return; + } + + VisitDeclContext(D->getDeclContext()); + if (!IgnoreResults) + Out << "@N@" << D->getName(); +} + +void USRGenerator::VisitFunctionTemplateDecl(const FunctionTemplateDecl *D) { + VisitFunctionDecl(D->getTemplatedDecl()); +} + +void USRGenerator::VisitClassTemplateDecl(const ClassTemplateDecl *D) { + VisitTagDecl(D->getTemplatedDecl()); +} + +void USRGenerator::VisitNamespaceAliasDecl(const NamespaceAliasDecl *D) { + VisitDeclContext(D->getDeclContext()); + if (!IgnoreResults) + Out << "@NA@" << D->getName(); +} + +void USRGenerator::VisitObjCMethodDecl(const ObjCMethodDecl *D) { + const DeclContext *container = D->getDeclContext(); + if (const ObjCProtocolDecl *pd = dyn_cast<ObjCProtocolDecl>(container)) { + Visit(pd); + } + else { + // The USR for a method declared in a class extension or category is based on + // the ObjCInterfaceDecl, not the ObjCCategoryDecl. + const ObjCInterfaceDecl *ID = D->getClassInterface(); + if (!ID) { + IgnoreResults = true; + return; + } + Visit(ID); + } + // Ideally we would use 'GenObjCMethod', but this is such a hot path + // for Objective-C code that we don't want to use + // DeclarationName::getAsString(). + Out << (D->isInstanceMethod() ? "(im)" : "(cm)") + << DeclarationName(D->getSelector()); +} + +void USRGenerator::VisitObjCContainerDecl(const ObjCContainerDecl *D) { + switch (D->getKind()) { + default: + llvm_unreachable("Invalid ObjC container."); + case Decl::ObjCInterface: + case Decl::ObjCImplementation: + GenObjCClass(D->getName()); + break; + case Decl::ObjCCategory: { + const ObjCCategoryDecl *CD = cast<ObjCCategoryDecl>(D); + const ObjCInterfaceDecl *ID = CD->getClassInterface(); + if (!ID) { + // Handle invalid code where the @interface might not + // have been specified. + // FIXME: We should be able to generate this USR even if the + // @interface isn't available. + IgnoreResults = true; + return; + } + // Specially handle class extensions, which are anonymous categories. + // We want to mangle in the location to uniquely distinguish them. + if (CD->IsClassExtension()) { + Out << "objc(ext)" << ID->getName() << '@'; + GenLoc(CD); + } + else + GenObjCCategory(ID->getName(), CD->getName()); + + break; + } + case Decl::ObjCCategoryImpl: { + const ObjCCategoryImplDecl *CD = cast<ObjCCategoryImplDecl>(D); + const ObjCInterfaceDecl *ID = CD->getClassInterface(); + if (!ID) { + // Handle invalid code where the @interface might not + // have been specified. + // FIXME: We should be able to generate this USR even if the + // @interface isn't available. + IgnoreResults = true; + return; + } + GenObjCCategory(ID->getName(), CD->getName()); + break; + } + case Decl::ObjCProtocol: + GenObjCProtocol(cast<ObjCProtocolDecl>(D)->getName()); + break; + } +} + +void USRGenerator::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) { + // The USR for a property declared in a class extension or category is based + // on the ObjCInterfaceDecl, not the ObjCCategoryDecl. + if (const ObjCInterfaceDecl *ID = Context->getObjContainingInterface(D)) + Visit(ID); + else + Visit(cast<Decl>(D->getDeclContext())); + GenObjCProperty(D->getName()); +} + +void USRGenerator::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) { + if (ObjCPropertyDecl *PD = D->getPropertyDecl()) { + VisitObjCPropertyDecl(PD); + return; + } + + IgnoreResults = true; +} + +void USRGenerator::VisitTagDecl(const TagDecl *D) { + // Add the location of the tag decl to handle resolution across + // translation units. + if (ShouldGenerateLocation(D) && GenLoc(D)) + return; + + D = D->getCanonicalDecl(); + VisitDeclContext(D->getDeclContext()); + + bool AlreadyStarted = false; + if (const CXXRecordDecl *CXXRecord = dyn_cast<CXXRecordDecl>(D)) { + if (ClassTemplateDecl *ClassTmpl = CXXRecord->getDescribedClassTemplate()) { + AlreadyStarted = true; + + switch (D->getTagKind()) { + case TTK_Interface: + case TTK_Struct: Out << "@ST"; break; + case TTK_Class: Out << "@CT"; break; + case TTK_Union: Out << "@UT"; break; + case TTK_Enum: llvm_unreachable("enum template"); + } + VisitTemplateParameterList(ClassTmpl->getTemplateParameters()); + } else if (const ClassTemplatePartialSpecializationDecl *PartialSpec + = dyn_cast<ClassTemplatePartialSpecializationDecl>(CXXRecord)) { + AlreadyStarted = true; + + switch (D->getTagKind()) { + case TTK_Interface: + case TTK_Struct: Out << "@SP"; break; + case TTK_Class: Out << "@CP"; break; + case TTK_Union: Out << "@UP"; break; + case TTK_Enum: llvm_unreachable("enum partial specialization"); + } + VisitTemplateParameterList(PartialSpec->getTemplateParameters()); + } + } + + if (!AlreadyStarted) { + switch (D->getTagKind()) { + case TTK_Interface: + case TTK_Struct: Out << "@S"; break; + case TTK_Class: Out << "@C"; break; + case TTK_Union: Out << "@U"; break; + case TTK_Enum: Out << "@E"; break; + } + } + + Out << '@'; + Out.flush(); + assert(Buf.size() > 0); + const unsigned off = Buf.size() - 1; + + if (EmitDeclName(D)) { + if (const TypedefNameDecl *TD = D->getTypedefNameForAnonDecl()) { + Buf[off] = 'A'; + Out << '@' << *TD; + } + else + Buf[off] = 'a'; + } + + // For a class template specialization, mangle the template arguments. + if (const ClassTemplateSpecializationDecl *Spec + = dyn_cast<ClassTemplateSpecializationDecl>(D)) { + const TemplateArgumentList &Args = Spec->getTemplateInstantiationArgs(); + Out << '>'; + for (unsigned I = 0, N = Args.size(); I != N; ++I) { + Out << '#'; + VisitTemplateArgument(Args.get(I)); + } + } +} + +void USRGenerator::VisitTypedefDecl(const TypedefDecl *D) { + if (ShouldGenerateLocation(D) && GenLoc(D)) + return; + const DeclContext *DC = D->getDeclContext(); + if (const NamedDecl *DCN = dyn_cast<NamedDecl>(DC)) + Visit(DCN); + Out << "@T@"; + Out << D->getName(); +} + +void USRGenerator::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) { + GenLoc(D); + return; +} + +bool USRGenerator::GenLoc(const Decl *D) { + if (generatedLoc) + return IgnoreResults; + generatedLoc = true; + + // Guard against null declarations in invalid code. + if (!D) { + IgnoreResults = true; + return true; + } + + // Use the location of canonical decl. + D = D->getCanonicalDecl(); + + const SourceManager &SM = Context->getSourceManager(); + SourceLocation L = D->getLocStart(); + if (L.isInvalid()) { + IgnoreResults = true; + return true; + } + L = SM.getExpansionLoc(L); + const std::pair<FileID, unsigned> &Decomposed = SM.getDecomposedLoc(L); + const FileEntry *FE = SM.getFileEntryForID(Decomposed.first); + if (FE) { + Out << llvm::sys::path::filename(FE->getName()); + } + else { + // This case really isn't interesting. + IgnoreResults = true; + return true; + } + // Use the offest into the FileID to represent the location. Using + // a line/column can cause us to look back at the original source file, + // which is expensive. + Out << '@' << Decomposed.second; + return IgnoreResults; +} + +void USRGenerator::VisitType(QualType T) { + // This method mangles in USR information for types. It can possibly + // just reuse the naming-mangling logic used by codegen, although the + // requirements for USRs might not be the same. + ASTContext &Ctx = *Context; + + do { + T = Ctx.getCanonicalType(T); + Qualifiers Q = T.getQualifiers(); + unsigned qVal = 0; + if (Q.hasConst()) + qVal |= 0x1; + if (Q.hasVolatile()) + qVal |= 0x2; + if (Q.hasRestrict()) + qVal |= 0x4; + if(qVal) + Out << ((char) ('0' + qVal)); + + // Mangle in ObjC GC qualifiers? + + if (const PackExpansionType *Expansion = T->getAs<PackExpansionType>()) { + Out << 'P'; + T = Expansion->getPattern(); + } + + if (const BuiltinType *BT = T->getAs<BuiltinType>()) { + unsigned char c = '\0'; + switch (BT->getKind()) { + case BuiltinType::Void: + c = 'v'; break; + case BuiltinType::Bool: + c = 'b'; break; + case BuiltinType::Char_U: + case BuiltinType::UChar: + c = 'c'; break; + case BuiltinType::Char16: + c = 'q'; break; + case BuiltinType::Char32: + c = 'w'; break; + case BuiltinType::UShort: + c = 's'; break; + case BuiltinType::UInt: + c = 'i'; break; + case BuiltinType::ULong: + c = 'l'; break; + case BuiltinType::ULongLong: + c = 'k'; break; + case BuiltinType::UInt128: + c = 'j'; break; + case BuiltinType::Char_S: + case BuiltinType::SChar: + c = 'C'; break; + case BuiltinType::WChar_S: + case BuiltinType::WChar_U: + c = 'W'; break; + case BuiltinType::Short: + c = 'S'; break; + case BuiltinType::Int: + c = 'I'; break; + case BuiltinType::Long: + c = 'L'; break; + case BuiltinType::LongLong: + c = 'K'; break; + case BuiltinType::Int128: + c = 'J'; break; + case BuiltinType::Half: + c = 'h'; break; + case BuiltinType::Float: + c = 'f'; break; + case BuiltinType::Double: + c = 'd'; break; + case BuiltinType::LongDouble: + c = 'D'; break; + case BuiltinType::NullPtr: + c = 'n'; break; +#define BUILTIN_TYPE(Id, SingletonId) +#define PLACEHOLDER_TYPE(Id, SingletonId) case BuiltinType::Id: +#include "clang/AST/BuiltinTypes.def" + case BuiltinType::Dependent: + case BuiltinType::OCLImage1d: + case BuiltinType::OCLImage1dArray: + case BuiltinType::OCLImage1dBuffer: + case BuiltinType::OCLImage2d: + case BuiltinType::OCLImage2dArray: + case BuiltinType::OCLImage3d: + case BuiltinType::OCLEvent: + case BuiltinType::OCLSampler: + IgnoreResults = true; + return; + case BuiltinType::ObjCId: + c = 'o'; break; + case BuiltinType::ObjCClass: + c = 'O'; break; + case BuiltinType::ObjCSel: + c = 'e'; break; + } + Out << c; + return; + } + + // If we have already seen this (non-built-in) type, use a substitution + // encoding. + llvm::DenseMap<const Type *, unsigned>::iterator Substitution + = TypeSubstitutions.find(T.getTypePtr()); + if (Substitution != TypeSubstitutions.end()) { + Out << 'S' << Substitution->second << '_'; + return; + } else { + // Record this as a substitution. + unsigned Number = TypeSubstitutions.size(); + TypeSubstitutions[T.getTypePtr()] = Number; + } + + if (const PointerType *PT = T->getAs<PointerType>()) { + Out << '*'; + T = PT->getPointeeType(); + continue; + } + if (const ReferenceType *RT = T->getAs<ReferenceType>()) { + Out << '&'; + T = RT->getPointeeType(); + continue; + } + if (const FunctionProtoType *FT = T->getAs<FunctionProtoType>()) { + Out << 'F'; + VisitType(FT->getResultType()); + for (FunctionProtoType::arg_type_iterator + I = FT->arg_type_begin(), E = FT->arg_type_end(); I!=E; ++I) { + VisitType(*I); + } + if (FT->isVariadic()) + Out << '.'; + return; + } + if (const BlockPointerType *BT = T->getAs<BlockPointerType>()) { + Out << 'B'; + T = BT->getPointeeType(); + continue; + } + if (const ComplexType *CT = T->getAs<ComplexType>()) { + Out << '<'; + T = CT->getElementType(); + continue; + } + if (const TagType *TT = T->getAs<TagType>()) { + Out << '$'; + VisitTagDecl(TT->getDecl()); + return; + } + if (const TemplateTypeParmType *TTP = T->getAs<TemplateTypeParmType>()) { + Out << 't' << TTP->getDepth() << '.' << TTP->getIndex(); + return; + } + if (const TemplateSpecializationType *Spec + = T->getAs<TemplateSpecializationType>()) { + Out << '>'; + VisitTemplateName(Spec->getTemplateName()); + Out << Spec->getNumArgs(); + for (unsigned I = 0, N = Spec->getNumArgs(); I != N; ++I) + VisitTemplateArgument(Spec->getArg(I)); + return; + } + + // Unhandled type. + Out << ' '; + break; + } while (true); +} + +void USRGenerator::VisitTemplateParameterList( + const TemplateParameterList *Params) { + if (!Params) + return; + Out << '>' << Params->size(); + for (TemplateParameterList::const_iterator P = Params->begin(), + PEnd = Params->end(); + P != PEnd; ++P) { + Out << '#'; + if (isa<TemplateTypeParmDecl>(*P)) { + if (cast<TemplateTypeParmDecl>(*P)->isParameterPack()) + Out<< 'p'; + Out << 'T'; + continue; + } + + if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(*P)) { + if (NTTP->isParameterPack()) + Out << 'p'; + Out << 'N'; + VisitType(NTTP->getType()); + continue; + } + + TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*P); + if (TTP->isParameterPack()) + Out << 'p'; + Out << 't'; + VisitTemplateParameterList(TTP->getTemplateParameters()); + } +} + +void USRGenerator::VisitTemplateName(TemplateName Name) { + if (TemplateDecl *Template = Name.getAsTemplateDecl()) { + if (TemplateTemplateParmDecl *TTP + = dyn_cast<TemplateTemplateParmDecl>(Template)) { + Out << 't' << TTP->getDepth() << '.' << TTP->getIndex(); + return; + } + + Visit(Template); + return; + } + + // FIXME: Visit dependent template names. +} + +void USRGenerator::VisitTemplateArgument(const TemplateArgument &Arg) { + switch (Arg.getKind()) { + case TemplateArgument::Null: + break; + + case TemplateArgument::Declaration: + Visit(Arg.getAsDecl()); + break; + + case TemplateArgument::NullPtr: + break; + + case TemplateArgument::TemplateExpansion: + Out << 'P'; // pack expansion of... + // Fall through + case TemplateArgument::Template: + VisitTemplateName(Arg.getAsTemplateOrTemplatePattern()); + break; + + case TemplateArgument::Expression: + // FIXME: Visit expressions. + break; + + case TemplateArgument::Pack: + Out << 'p' << Arg.pack_size(); + for (TemplateArgument::pack_iterator P = Arg.pack_begin(), PEnd = Arg.pack_end(); + P != PEnd; ++P) + VisitTemplateArgument(*P); + break; + + case TemplateArgument::Type: + VisitType(Arg.getAsType()); + break; + + case TemplateArgument::Integral: + Out << 'V'; + VisitType(Arg.getIntegralType()); + Out << Arg.getAsIntegral(); + break; + } +} + +//===----------------------------------------------------------------------===// +// USR generation functions. +//===----------------------------------------------------------------------===// + +void clang::index::generateUSRForObjCClass(StringRef Cls, raw_ostream &OS) { + OS << "objc(cs)" << Cls; +} + +void clang::index::generateUSRForObjCCategory(StringRef Cls, StringRef Cat, + raw_ostream &OS) { + OS << "objc(cy)" << Cls << '@' << Cat; +} + +void clang::index::generateUSRForObjCIvar(StringRef Ivar, raw_ostream &OS) { + OS << '@' << Ivar; +} + +void clang::index::generateUSRForObjCMethod(StringRef Sel, + bool IsInstanceMethod, + raw_ostream &OS) { + OS << (IsInstanceMethod ? "(im)" : "(cm)") << Sel; +} + +void clang::index::generateUSRForObjCProperty(StringRef Prop, raw_ostream &OS) { + OS << "(py)" << Prop; +} + +void clang::index::generateUSRForObjCProtocol(StringRef Prot, raw_ostream &OS) { + OS << "objc(pl)" << Prot; +} + +bool clang::index::generateUSRForDecl(const Decl *D, + SmallVectorImpl<char> &Buf) { + // Don't generate USRs for things with invalid locations. + if (!D || D->getLocStart().isInvalid()) + return true; + + USRGenerator UG(&D->getASTContext(), Buf); + UG.Visit(D); + return UG.ignoreResults(); +} |
