c44c174246
Currently, we only accept clang as the scoped attribute identifier for double square bracket attributes provided by Clang, but this has the potential to conflict with user-defined macros. To help alleviate these concerns, this introduces the _Clang scoped attribute identifier as an alias for clang. It also introduces a warning with a fixit on the off chance someone attempts to use __clang__ as the scoped attribute (which is a predefined compiler identification macro). llvm-svn: 346521
36 lines
1.3 KiB
C++
36 lines
1.3 KiB
C++
#include "clang/Basic/Attributes.h"
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#include "clang/Basic/AttrSubjectMatchRules.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace clang;
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int clang::hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope,
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const IdentifierInfo *Attr, const TargetInfo &Target,
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const LangOptions &LangOpts) {
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StringRef Name = Attr->getName();
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// Normalize the attribute name, __foo__ becomes foo.
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if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
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Name = Name.substr(2, Name.size() - 4);
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// Normalize the scope name, but only for gnu and clang attributes.
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StringRef ScopeName = Scope ? Scope->getName() : "";
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if (ScopeName == "__gnu__")
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ScopeName = "gnu";
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else if (ScopeName == "_Clang")
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ScopeName = "clang";
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#include "clang/Basic/AttrHasAttributeImpl.inc"
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return 0;
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}
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const char *attr::getSubjectMatchRuleSpelling(attr::SubjectMatchRule Rule) {
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switch (Rule) {
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#define ATTR_MATCH_RULE(NAME, SPELLING, IsAbstract) \
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case attr::NAME: \
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return SPELLING;
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#include "clang/Basic/AttrSubMatchRulesList.inc"
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}
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llvm_unreachable("Invalid subject match rule");
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}
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