| 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" |
| 19 | #include "clang/AST/DeclTemplate.h" |
| 20 | |
| 21 | namespace clang { |
| 22 | inline 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. |
| 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; |
| 31 | } |
| 32 | |
| 33 | inline bool isLambdaCallOperator(const DeclContext *DC) { |
| 34 | if (!DC || !isa<CXXMethodDecl>(DC)) return false; |
| 35 | return isLambdaCallOperator(cast<CXXMethodDecl>(DC)); |
| 36 | } |
| 37 | |
| 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(); |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | inline bool isLambdaConversionOperator(CXXConversionDecl *C) { |
| 48 | return C ? C->getParent()->isLambda() : false; |
| 49 | } |
| 50 | |
| 51 | inline bool isLambdaConversionOperator(Decl *D) { |
| 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 | |
| 62 | inline bool isGenericLambdaCallOperatorSpecialization(DeclContext *DC) { |
| 63 | return isGenericLambdaCallOperatorSpecialization( |
| 64 | dyn_cast<CXXMethodDecl>(DC)); |
| 65 | } |
| 66 | |
| 67 | |
| 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(); |
| 73 | else |
| 74 | return DC->getParent(); |
| 75 | } |
| 76 | |
| 77 | } // clang |
| 78 | |
| 79 | #endif |
| 80 |