clang  6.0.0svn
SelectorExtras.h
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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_STATICANALYZER_CHECKERS_SELECTOREXTRAS_H
11 #define LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_SELECTOREXTRAS_H
12 
13 #include "clang/AST/ASTContext.h"
14 
15 namespace clang {
16 namespace ento {
17 
18 template <typename... IdentifierInfos>
20  IdentifierInfos *... IIs) {
21  static_assert(sizeof...(IdentifierInfos),
22  "keyword selectors must have at least one argument");
23  SmallVector<IdentifierInfo *, 10> II({&Ctx.Idents.get(IIs)...});
24 
25  return Ctx.Selectors.getSelector(II.size(), &II[0]);
26 }
27 
28 template <typename... IdentifierInfos>
29 static inline void lazyInitKeywordSelector(Selector &Sel, ASTContext &Ctx,
30  IdentifierInfos *... IIs) {
31  if (!Sel.isNull())
32  return;
33  Sel = getKeywordSelector(Ctx, IIs...);
34 }
35 
36 static inline void lazyInitNullarySelector(Selector &Sel, ASTContext &Ctx,
37  const char *Name) {
38  if (!Sel.isNull())
39  return;
40  Sel = GetNullarySelector(Name, Ctx);
41 }
42 
43 } // end namespace ento
44 } // end namespace clang
45 
46 #endif
Defines the clang::ASTContext interface.
static Selector GetNullarySelector(StringRef name, ASTContext &Ctx)
Utility function for constructing a nullary selector.
Definition: ASTContext.h:2782
Smart pointer class that efficiently represents Objective-C method names.
static void lazyInitKeywordSelector(Selector &Sel, ASTContext &Ctx, IdentifierInfos *... IIs)
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:128
static Selector getKeywordSelector(ASTContext &Ctx, IdentifierInfos *... IIs)
IdentifierTable & Idents
Definition: ASTContext.h:515
static void lazyInitNullarySelector(Selector &Sel, ASTContext &Ctx, const char *Name)
SelectorTable & Selectors
Definition: ASTContext.h:516
IdentifierInfo & get(StringRef Name)
Return the identifier token info for the specified named identifier.
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.