clang  8.0.0svn
SelectorExtras.h
Go to the documentation of this file.
1 //=== SelectorExtras.h - Helpers for checkers using selectors -----*- C++ -*-=//
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 #ifndef LLVM_CLANG_LIB_ANALYSIS_SELECTOREXTRAS_H
11 #define LLVM_CLANG_LIB_ANALYSIS_SELECTOREXTRAS_H
12 
13 #include "clang/AST/ASTContext.h"
14 
15 namespace clang {
16 
17 template <typename... IdentifierInfos>
19  IdentifierInfos *... IIs) {
20  static_assert(sizeof...(IdentifierInfos),
21  "keyword selectors must have at least one argument");
22  SmallVector<IdentifierInfo *, 10> II({&Ctx.Idents.get(IIs)...});
23 
24  return Ctx.Selectors.getSelector(II.size(), &II[0]);
25 }
26 
27 template <typename... IdentifierInfos>
28 static inline void lazyInitKeywordSelector(Selector &Sel, ASTContext &Ctx,
29  IdentifierInfos *... IIs) {
30  if (!Sel.isNull())
31  return;
32  Sel = getKeywordSelector(Ctx, IIs...);
33 }
34 
35 } // end namespace clang
36 
37 #endif
Defines the clang::ASTContext interface.
Smart pointer class that efficiently represents Objective-C method names.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:154
IdentifierTable & Idents
Definition: ASTContext.h:565
SelectorTable & Selectors
Definition: ASTContext.h:566
IdentifierInfo & get(StringRef Name)
Return the identifier token info for the specified named identifier.
static void lazyInitKeywordSelector(Selector &Sel, ASTContext &Ctx, IdentifierInfos *... IIs)
static Selector getKeywordSelector(ASTContext &Ctx, IdentifierInfos *... IIs)
Dataflow Directional Tag Classes.
Selector getSelector(unsigned NumArgs, IdentifierInfo **IIV)
Can create any sort of selector.
bool isNull() const
Determine whether this is the empty selector.