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//===--- ASTLambda.h - Lambda Helper Functions --------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file provides some common utility functions for processing
/// Lambda related AST Constructs.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_ASTLAMBDA_H
#define LLVM_CLANG_AST_ASTLAMBDA_H
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
namespace clang {
inline StringRef getLambdaStaticInvokerName() {
return "__invoke";
}
// This function returns true if M is a specialization, a template,
// or a non-generic lambda call operator.
inline bool isLambdaCallOperator(const CXXMethodDecl *MD) {
const CXXRecordDecl *LambdaClass = MD->getParent();
if (!LambdaClass || !LambdaClass->isLambda()) return false;
return MD->getOverloadedOperator() == OO_Call;
}
inline bool isLambdaCallOperator(const DeclContext *DC) {
if (!DC || !isa<CXXMethodDecl>(DC)) return false;
return isLambdaCallOperator(cast<CXXMethodDecl>(DC));
}
inline bool isGenericLambdaCallOperatorSpecialization(const CXXMethodDecl *MD) {
if (!MD) return false;
const CXXRecordDecl *LambdaClass = MD->getParent();
if (LambdaClass && LambdaClass->isGenericLambda())
return isLambdaCallOperator(MD) &&
MD->isFunctionTemplateSpecialization();
return false;
}
inline bool isLambdaConversionOperator(CXXConversionDecl *C) {
return C ? C->getParent()->isLambda() : false;
}
inline bool isLambdaConversionOperator(Decl *D) {
if (!D) return false;
if (CXXConversionDecl *Conv = dyn_cast<CXXConversionDecl>(D))
return isLambdaConversionOperator(Conv);
if (FunctionTemplateDecl *F = dyn_cast<FunctionTemplateDecl>(D))
if (CXXConversionDecl *Conv =
dyn_cast_or_null<CXXConversionDecl>(F->getTemplatedDecl()))
return isLambdaConversionOperator(Conv);
return false;
}
inline bool isGenericLambdaCallOperatorSpecialization(DeclContext *DC) {
return isGenericLambdaCallOperatorSpecialization(
dyn_cast<CXXMethodDecl>(DC));
}
// This returns the parent DeclContext ensuring that the correct
// parent DeclContext is returned for Lambdas
inline DeclContext *getLambdaAwareParentOfDeclContext(DeclContext *DC) {
if (isLambdaCallOperator(DC))
return DC->getParent()->getParent();
else
return DC->getParent();
}
} // clang
#endif
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