clang  10.0.0svn
ObjCNoReturn.h
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1 //= ObjCNoReturn.h - Handling of Cocoa APIs known not to return --*- C++ -*---//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements special handling of recognizing ObjC API hooks that
10 // do not return but aren't marked as such in API headers.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_ANALYSIS_DOMAINSPECIFIC_OBJCNORETURN_H
15 #define LLVM_CLANG_ANALYSIS_DOMAINSPECIFIC_OBJCNORETURN_H
16 
18 
19 namespace clang {
20 
21 class ASTContext;
22 class ObjCMessageExpr;
23 
24 class ObjCNoReturn {
25  /// Cached "raise" selector.
26  Selector RaiseSel;
27 
28  /// Cached identifier for "NSException".
29  IdentifierInfo *NSExceptionII;
30 
31  enum { NUM_RAISE_SELECTORS = 2 };
32 
33  /// Cached set of selectors in NSException that are 'noreturn'.
34  Selector NSExceptionInstanceRaiseSelectors[NUM_RAISE_SELECTORS];
35 
36 public:
38 
39  /// Return true if the given message expression is known to never
40  /// return.
41  bool isImplicitNoReturn(const ObjCMessageExpr *ME);
42 };
43 }
44 
45 #endif
Smart pointer class that efficiently represents Objective-C method names.
One of these records is kept for each identifier that is lexed.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:154
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:950
Dataflow Directional Tag Classes.
bool isImplicitNoReturn(const ObjCMessageExpr *ME)
Return true if the given message expression is known to never return.
ObjCNoReturn(ASTContext &C)