1 //===--- ASTLambda.h - Lambda Helper Functions --------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
10 /// This file provides some common utility functions for processing
11 /// Lambda related AST Constructs.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_CLANG_AST_ASTLAMBDA_H
16 #define LLVM_CLANG_AST_ASTLAMBDA_H
18 #include "clang/AST/DeclCXX.h"
19 #include "clang/AST/DeclTemplate.h"
22 inline StringRef getLambdaStaticInvokerName() {
25 // This function returns true if M is a specialization, a template,
26 // or a non-generic lambda call operator.
27 inline bool isLambdaCallOperator(const CXXMethodDecl *MD) {
28 const CXXRecordDecl *LambdaClass = MD->getParent();
29 if (!LambdaClass || !LambdaClass->isLambda()) return false;
30 return MD->getOverloadedOperator() == OO_Call;
33 inline bool isLambdaCallOperator(const DeclContext *DC) {
34 if (!DC || !isa<CXXMethodDecl>(DC)) return false;
35 return isLambdaCallOperator(cast<CXXMethodDecl>(DC));
38 inline bool isGenericLambdaCallOperatorSpecialization(const CXXMethodDecl *MD) {
39 if (!MD) return false;
40 const CXXRecordDecl *LambdaClass = MD->getParent();
41 if (LambdaClass && LambdaClass->isGenericLambda())
42 return isLambdaCallOperator(MD) &&
43 MD->isFunctionTemplateSpecialization();
47 inline bool isLambdaConversionOperator(CXXConversionDecl *C) {
48 return C ? C->getParent()->isLambda() : false;
51 inline bool isLambdaConversionOperator(Decl *D) {
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);
62 inline bool isGenericLambdaCallOperatorSpecialization(DeclContext *DC) {
63 return isGenericLambdaCallOperatorSpecialization(
64 dyn_cast<CXXMethodDecl>(DC));
68 // This returns the parent DeclContext ensuring that the correct
69 // parent DeclContext is returned for Lambdas
70 inline DeclContext *getLambdaAwareParentOfDeclContext(DeclContext *DC) {
71 if (isLambdaCallOperator(DC))
72 return DC->getParent()->getParent();
74 return DC->getParent();