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//===-- NameSearchContext.h -------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_NAME_SEARCH_CONTEXT_H
#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_NAME_SEARCH_CONTEXT_H
#include "Plugins/ExpressionParser/Clang/ClangASTImporter.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
#include "lldb/Symbol/CompilerType.h"
#include "llvm/ADT/SmallSet.h"
namespace lldb_private {
/// \class NameSearchContext ClangASTSource.h
/// "lldb/Expression/ClangASTSource.h" Container for all objects relevant to a
/// single name lookup
///
/// LLDB needs to create Decls for entities it finds. This class communicates
/// what name is being searched for and provides helper functions to construct
/// Decls given appropriate type information.
struct NameSearchContext {
/// The type system of the AST from which the lookup originated.
TypeSystemClang &m_clang_ts;
/// The list of declarations already constructed.
llvm::SmallVectorImpl<clang::NamedDecl *> &m_decls;
/// The mapping of all namespaces found for this request back to their
/// modules.
ClangASTImporter::NamespaceMapSP m_namespace_map;
/// The name being looked for.
const clang::DeclarationName m_decl_name;
/// The DeclContext to put declarations into.
const clang::DeclContext *m_decl_context;
/// All the types of functions that have been reported, so we don't
/// report conflicts.
llvm::SmallSet<CompilerType, 5> m_function_types;
bool m_found_variable = false;
bool m_found_function_with_type_info = false;
bool m_found_function = false;
bool m_found_local_vars_nsp = false;
bool m_found_type = false;
/// Constructor
///
/// Initializes class variables.
///
/// \param[in] clang_ts
/// The TypeSystemClang from which the request originates.
///
/// \param[in] decls
/// A reference to a list into which new Decls will be placed. This
/// list is typically empty when the function is called.
///
/// \param[in] name
/// The name being searched for (always an Identifier).
///
/// \param[in] dc
/// The DeclContext to register Decls in.
NameSearchContext(TypeSystemClang &clang_ts,
llvm::SmallVectorImpl<clang::NamedDecl *> &decls,
clang::DeclarationName name, const clang::DeclContext *dc)
: m_clang_ts(clang_ts), m_decls(decls),
m_namespace_map(std::make_shared<ClangASTImporter::NamespaceMap>()),
m_decl_name(name), m_decl_context(dc) {
;
}
/// Create a VarDecl with the name being searched for and the provided type
/// and register it in the right places.
///
/// \param[in] type
/// The opaque QualType for the VarDecl being registered.
clang::NamedDecl *AddVarDecl(const CompilerType &type);
/// Create a FunDecl with the name being searched for and the provided type
/// and register it in the right places.
///
/// \param[in] type
/// The opaque QualType for the FunDecl being registered.
///
/// \param[in] extern_c
/// If true, build an extern "C" linkage specification for this.
clang::NamedDecl *AddFunDecl(const CompilerType &type, bool extern_c = false);
/// Create a FunDecl with the name being searched for and generic type (i.e.
/// intptr_t NAME_GOES_HERE(...)) and register it in the right places.
clang::NamedDecl *AddGenericFunDecl();
/// Create a TypeDecl with the name being searched for and the provided type
/// and register it in the right places.
///
/// \param[in] compiler_type
/// The opaque QualType for the TypeDecl being registered.
clang::NamedDecl *AddTypeDecl(const CompilerType &compiler_type);
/// Add Decls from the provided DeclContextLookupResult to the list of
/// results.
///
/// \param[in] result
/// The DeclContextLookupResult, usually returned as the result
/// of querying a DeclContext.
void AddLookupResult(clang::DeclContextLookupResult result);
/// Add a NamedDecl to the list of results.
///
/// \param[in] decl
/// The NamedDecl, usually returned as the result
/// of querying a DeclContext.
void AddNamedDecl(clang::NamedDecl *decl);
private:
clang::ASTContext &GetASTContext() const {
return m_clang_ts.getASTContext();
}
};
} // namespace lldb_private
#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_NAME_SEARCH_CONTEXT_H
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