llvm/lldb/source/Plugins/ExpressionParser/Clang/CxxModuleHandler.cpp

//===-- CxxModuleHandler.cpp ----------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "Plugins/ExpressionParser/Clang/CxxModuleHandler.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"

#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include "clang/Sema/Lookup.h"
#include "llvm/Support/Error.h"
#include <optional>

usingnamespacelldb_private;
usingnamespaceclang;

CxxModuleHandler::CxxModuleHandler(ASTImporter &importer, ASTContext *target)
    : … { … }

/// Builds a list of scopes that point into the given context.
///
/// \param sema The sema that will be using the scopes.
/// \param ctxt The context that the scope should look into.
/// \param result A list of scopes. The scopes need to be freed by the caller
///               (except the TUScope which is owned by the sema).
static void makeScopes(Sema &sema, DeclContext *ctxt,
                       std::vector<Scope *> &result) { … }

/// Uses the Sema to look up the given name in the given DeclContext.
static std::unique_ptr<LookupResult>
emulateLookupInCtxt(Sema &sema, llvm::StringRef name, DeclContext *ctxt) { … }

/// Error class for handling problems when finding a certain DeclContext.
struct MissingDeclContext : public llvm::ErrorInfo<MissingDeclContext> { … };

char MissingDeclContext::ID = …;

/// Given a foreign decl context, this function finds the equivalent local
/// decl context in the ASTContext of the given Sema. Potentially deserializes
/// decls from the 'std' module if necessary.
static llvm::Expected<DeclContext *>
getEqualLocalDeclContext(Sema &sema, DeclContext *foreign_ctxt) { … }

/// Returns true iff tryInstantiateStdTemplate supports instantiating a template
/// with the given template arguments.
static bool templateArgsAreSupported(ArrayRef<TemplateArgument> a) { … }

/// Constructor function for Clang declarations. Ensures that the created
/// declaration is registered with the ASTImporter.
template <typename T, typename... Args>
T *createDecl(ASTImporter &importer, Decl *from_d, Args &&... args) { … }

std::optional<Decl *> CxxModuleHandler::tryInstantiateStdTemplate(Decl *d) { … }

std::optional<Decl *> CxxModuleHandler::Import(Decl *d) { … }