120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
#include "clang/Basic/Attributes.h"
|
|
#include "clang/Basic/AttrSubjectMatchRules.h"
|
|
#include "clang/Basic/AttributeCommonInfo.h"
|
|
#include "clang/Basic/IdentifierTable.h"
|
|
#include "llvm/ADT/StringSwitch.h"
|
|
using namespace clang;
|
|
|
|
int clang::hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope,
|
|
const IdentifierInfo *Attr, const TargetInfo &Target,
|
|
const LangOptions &LangOpts) {
|
|
StringRef Name = Attr->getName();
|
|
// Normalize the attribute name, __foo__ becomes foo.
|
|
if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
|
|
Name = Name.substr(2, Name.size() - 4);
|
|
|
|
// Normalize the scope name, but only for gnu and clang attributes.
|
|
StringRef ScopeName = Scope ? Scope->getName() : "";
|
|
if (ScopeName == "__gnu__")
|
|
ScopeName = "gnu";
|
|
else if (ScopeName == "_Clang")
|
|
ScopeName = "clang";
|
|
|
|
#include "clang/Basic/AttrHasAttributeImpl.inc"
|
|
|
|
return 0;
|
|
}
|
|
|
|
const char *attr::getSubjectMatchRuleSpelling(attr::SubjectMatchRule Rule) {
|
|
switch (Rule) {
|
|
#define ATTR_MATCH_RULE(NAME, SPELLING, IsAbstract) \
|
|
case attr::NAME: \
|
|
return SPELLING;
|
|
#include "clang/Basic/AttrSubMatchRulesList.inc"
|
|
}
|
|
llvm_unreachable("Invalid subject match rule");
|
|
}
|
|
|
|
static StringRef
|
|
normalizeAttrScopeName(const IdentifierInfo *Scope,
|
|
AttributeCommonInfo::Syntax SyntaxUsed) {
|
|
if (!Scope)
|
|
return "";
|
|
|
|
// Normalize the "__gnu__" scope name to be "gnu" and the "_Clang" scope name
|
|
// to be "clang".
|
|
StringRef ScopeName = Scope->getName();
|
|
if (SyntaxUsed == AttributeCommonInfo::AS_CXX11 ||
|
|
SyntaxUsed == AttributeCommonInfo::AS_C2x) {
|
|
if (ScopeName == "__gnu__")
|
|
ScopeName = "gnu";
|
|
else if (ScopeName == "_Clang")
|
|
ScopeName = "clang";
|
|
}
|
|
return ScopeName;
|
|
}
|
|
|
|
static StringRef normalizeAttrName(const IdentifierInfo *Name,
|
|
StringRef NormalizedScopeName,
|
|
AttributeCommonInfo::Syntax SyntaxUsed) {
|
|
// Normalize the attribute name, __foo__ becomes foo. This is only allowable
|
|
// for GNU attributes, and attributes using the double square bracket syntax.
|
|
bool ShouldNormalize =
|
|
SyntaxUsed == AttributeCommonInfo::AS_GNU ||
|
|
((SyntaxUsed == AttributeCommonInfo::AS_CXX11 ||
|
|
SyntaxUsed == AttributeCommonInfo::AS_C2x) &&
|
|
(NormalizedScopeName.empty() || NormalizedScopeName == "gnu" ||
|
|
NormalizedScopeName == "clang"));
|
|
StringRef AttrName = Name->getName();
|
|
if (ShouldNormalize && AttrName.size() >= 4 && AttrName.startswith("__") &&
|
|
AttrName.endswith("__"))
|
|
AttrName = AttrName.slice(2, AttrName.size() - 2);
|
|
|
|
return AttrName;
|
|
}
|
|
|
|
bool AttributeCommonInfo::isGNUScope() const {
|
|
return ScopeName && (ScopeName->isStr("gnu") || ScopeName->isStr("__gnu__"));
|
|
}
|
|
|
|
#include "clang/Sema/AttrParsedAttrKinds.inc"
|
|
|
|
static SmallString<64> normalizeName(const IdentifierInfo *Name,
|
|
const IdentifierInfo *Scope,
|
|
AttributeCommonInfo::Syntax SyntaxUsed) {
|
|
StringRef ScopeName = normalizeAttrScopeName(Scope, SyntaxUsed);
|
|
StringRef AttrName = normalizeAttrName(Name, ScopeName, SyntaxUsed);
|
|
|
|
SmallString<64> FullName = ScopeName;
|
|
if (!ScopeName.empty()) {
|
|
assert(SyntaxUsed == AttributeCommonInfo::AS_CXX11 ||
|
|
SyntaxUsed == AttributeCommonInfo::AS_C2x);
|
|
FullName += "::";
|
|
}
|
|
FullName += AttrName;
|
|
|
|
return FullName;
|
|
}
|
|
|
|
AttributeCommonInfo::Kind
|
|
AttributeCommonInfo::getParsedKind(const IdentifierInfo *Name,
|
|
const IdentifierInfo *ScopeName,
|
|
Syntax SyntaxUsed) {
|
|
return ::getAttrKind(normalizeName(Name, ScopeName, SyntaxUsed), SyntaxUsed);
|
|
}
|
|
|
|
std::string AttributeCommonInfo::getNormalizedFullName() const {
|
|
return static_cast<std::string>(
|
|
normalizeName(getAttrName(), getScopeName(), getSyntax()));
|
|
}
|
|
|
|
unsigned AttributeCommonInfo::calculateAttributeSpellingListIndex() const {
|
|
// Both variables will be used in tablegen generated
|
|
// attribute spell list index matching code.
|
|
auto Syntax = static_cast<AttributeCommonInfo::Syntax>(getSyntax());
|
|
StringRef Scope = normalizeAttrScopeName(getScopeName(), Syntax);
|
|
StringRef Name = normalizeAttrName(getAttrName(), Scope, Syntax);
|
|
|
|
#include "clang/Sema/AttrSpellingListIndex.inc"
|
|
}
|