clang 17.0.0git
ASTLambda.h
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1//===--- ASTLambda.h - Lambda Helper Functions --------------*- 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/// \file
10/// This file provides some common utility functions for processing
11/// Lambda related AST Constructs.
12///
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_CLANG_AST_ASTLAMBDA_H
16#define LLVM_CLANG_AST_ASTLAMBDA_H
17
18#include "clang/AST/DeclCXX.h"
20
21namespace clang {
22inline StringRef getLambdaStaticInvokerName() {
23 return "__invoke";
24}
25// This function returns true if M is a specialization, a template,
26// or a non-generic lambda call operator.
27inline bool isLambdaCallOperator(const CXXMethodDecl *MD) {
28 const CXXRecordDecl *LambdaClass = MD->getParent();
29 if (!LambdaClass || !LambdaClass->isLambda()) return false;
30 return MD->getOverloadedOperator() == OO_Call;
31}
32
33inline bool isLambdaCallOperator(const DeclContext *DC) {
34 if (!DC || !isa<CXXMethodDecl>(DC)) return false;
35 return isLambdaCallOperator(cast<CXXMethodDecl>(DC));
36}
37
39 if (!MD) return false;
40 const CXXRecordDecl *LambdaClass = MD->getParent();
41 if (LambdaClass && LambdaClass->isGenericLambda())
42 return isLambdaCallOperator(MD) &&
44 return false;
45}
46
48 return C ? C->getParent()->isLambda() : false;
49}
50
52 if (!D) return false;
53 if (CXXConversionDecl *Conv = dyn_cast<CXXConversionDecl>(D))
54 return isLambdaConversionOperator(Conv);
55 if (FunctionTemplateDecl *F = dyn_cast<FunctionTemplateDecl>(D))
56 if (CXXConversionDecl *Conv =
57 dyn_cast_or_null<CXXConversionDecl>(F->getTemplatedDecl()))
58 return isLambdaConversionOperator(Conv);
59 return false;
60}
61
64 dyn_cast<CXXMethodDecl>(DC));
65}
66
68 const DeclContext *DC) {
69 const auto *MD = dyn_cast<CXXMethodDecl>(DC);
70 if (!MD) return false;
71 const CXXRecordDecl *LambdaClass = MD->getParent();
72 if (LambdaClass && LambdaClass->isGenericLambda())
73 return (isLambdaCallOperator(MD) || MD->isLambdaStaticInvoker()) &&
74 MD->isFunctionTemplateSpecialization();
75 return false;
76}
77
78// This returns the parent DeclContext ensuring that the correct
79// parent DeclContext is returned for Lambdas
82 return DC->getParent()->getParent();
83 else
84 return DC->getParent();
85}
86
87} // clang
88
89#endif
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....
Defines the C++ template declaration subclasses.
Represents a C++ conversion function within a class.
Definition: DeclCXX.h:2818
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:2035
const CXXRecordDecl * getParent() const
Return the parent of this method declaration, which is the class in which this method is defined.
Definition: DeclCXX.h:2150
Represents a C++ struct/union/class.
Definition: DeclCXX.h:254
bool isGenericLambda() const
Determine whether this class describes a generic lambda function object (i.e.
Definition: DeclCXX.cpp:1521
bool isLambda() const
Determine whether this class describes a lambda function object.
Definition: DeclCXX.h:1009
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1402
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1942
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:83
OverloadedOperatorKind getOverloadedOperator() const
getOverloadedOperator - Which C++ overloaded operator this function represents, if any.
Definition: Decl.cpp:3815
bool isFunctionTemplateSpecialization() const
Determine whether this function is a function template specialization.
Definition: Decl.h:2799
Declaration of a template function.
DeclContext * getLambdaAwareParentOfDeclContext(DeclContext *DC)
Definition: ASTLambda.h:80
bool isGenericLambdaCallOperatorOrStaticInvokerSpecialization(const DeclContext *DC)
Definition: ASTLambda.h:67
@ C
Languages that the frontend can parse and compile.
bool isLambdaCallOperator(const CXXMethodDecl *MD)
Definition: ASTLambda.h:27
bool isLambdaConversionOperator(CXXConversionDecl *C)
Definition: ASTLambda.h:47
StringRef getLambdaStaticInvokerName()
Definition: ASTLambda.h:22
bool isGenericLambdaCallOperatorSpecialization(const CXXMethodDecl *MD)
Definition: ASTLambda.h:38