1 //===-- CompilerDecl.h ------------------------------------------*- 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 //===----------------------------------------------------------------------===//
9 #ifndef liblldb_CompilerDecl_h_
10 #define liblldb_CompilerDecl_h_
12 #include "lldb/Symbol/CompilerType.h"
13 #include "lldb/Utility/ConstString.h"
14 #include "lldb/lldb-private.h"
16 namespace lldb_private {
18 /// Represents a generic declaration such as a function declaration.
20 /// This class serves as an abstraction for a declaration inside one of the
21 /// TypeSystems implemented by the language plugins. It does not have any actual
22 /// logic in it but only stores an opaque pointer and a pointer to the
23 /// TypeSystem that gives meaning to this opaque pointer. All methods of this
24 /// class should call their respective method in the TypeSystem interface and
25 /// pass the opaque pointer along.
27 /// \see lldb_private::TypeSystem
30 // Constructors and Destructors
31 CompilerDecl() = default;
33 /// Creates a CompilerDecl with the given TypeSystem and opaque pointer.
35 /// This constructor should only be called from the respective TypeSystem
37 CompilerDecl(TypeSystem *type_system, void *decl)
38 : m_type_system(type_system), m_opaque_decl(decl) {}
42 explicit operator bool() const { return IsValid(); }
44 bool operator<(const CompilerDecl &rhs) const {
45 if (m_type_system == rhs.m_type_system)
46 return m_opaque_decl < rhs.m_opaque_decl;
47 return m_type_system < rhs.m_type_system;
50 bool IsValid() const {
51 return m_type_system != nullptr && m_opaque_decl != nullptr;
56 TypeSystem *GetTypeSystem() const { return m_type_system; }
58 void *GetOpaqueDecl() const { return m_opaque_decl; }
60 void SetDecl(TypeSystem *type_system, void *decl) {
61 m_type_system = type_system;
66 m_type_system = nullptr;
67 m_opaque_decl = nullptr;
70 ConstString GetName() const;
72 ConstString GetMangledName() const;
74 CompilerDeclContext GetDeclContext() const;
76 // If this decl represents a function, return the return type
77 CompilerType GetFunctionReturnType() const;
79 // If this decl represents a function, return the number of arguments for the
81 size_t GetNumFunctionArguments() const;
83 // If this decl represents a function, return the argument type given a zero
84 // based argument index
85 CompilerType GetFunctionArgumentType(size_t arg_idx) const;
88 TypeSystem *m_type_system = nullptr;
89 void *m_opaque_decl = nullptr;
92 bool operator==(const CompilerDecl &lhs, const CompilerDecl &rhs);
93 bool operator!=(const CompilerDecl &lhs, const CompilerDecl &rhs);
95 } // namespace lldb_private
97 #endif // #ifndef liblldb_CompilerDecl_h_