forked from standardese/cppast
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcpp_forward_declarable.cpp
More file actions
133 lines (119 loc) · 5.19 KB
/
Copy pathcpp_forward_declarable.cpp
File metadata and controls
133 lines (119 loc) · 5.19 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
// Copyright (C) 2017-2018 Jonathan Müller <[email protected]>
// This file is subject to the license terms in the LICENSE file
// found in the top-level directory of this distribution.
#include <cppast/cpp_forward_declarable.hpp>
#include <cppast/cpp_class.hpp>
#include <cppast/cpp_entity_kind.hpp>
#include <cppast/cpp_enum.hpp>
#include <cppast/cpp_function.hpp>
#include <cppast/cpp_template.hpp>
#include <cppast/cpp_variable.hpp>
using namespace cppast;
namespace
{
type_safe::optional_ref<const cpp_forward_declarable> get_declarable(const cpp_entity& e)
{
switch (e.kind())
{
case cpp_entity_kind::enum_t:
return type_safe::ref(static_cast<const cpp_enum&>(e));
case cpp_entity_kind::class_t:
return type_safe::ref(static_cast<const cpp_class&>(e));
case cpp_entity_kind::variable_t:
return type_safe::ref(static_cast<const cpp_variable&>(e));
case cpp_entity_kind::function_t:
case cpp_entity_kind::member_function_t:
case cpp_entity_kind::conversion_op_t:
case cpp_entity_kind::constructor_t:
case cpp_entity_kind::destructor_t:
return type_safe::ref(static_cast<const cpp_function_base&>(e));
case cpp_entity_kind::function_template_t:
case cpp_entity_kind::function_template_specialization_t:
case cpp_entity_kind::class_template_t:
case cpp_entity_kind::class_template_specialization_t:
return get_declarable(*static_cast<const cpp_template&>(e).begin());
case cpp_entity_kind::file_t:
case cpp_entity_kind::macro_parameter_t:
case cpp_entity_kind::macro_definition_t:
case cpp_entity_kind::include_directive_t:
case cpp_entity_kind::language_linkage_t:
case cpp_entity_kind::namespace_t:
case cpp_entity_kind::namespace_alias_t:
case cpp_entity_kind::using_directive_t:
case cpp_entity_kind::using_declaration_t:
case cpp_entity_kind::type_alias_t:
case cpp_entity_kind::enum_value_t:
case cpp_entity_kind::access_specifier_t:
case cpp_entity_kind::base_class_t:
case cpp_entity_kind::member_variable_t:
case cpp_entity_kind::bitfield_t:
case cpp_entity_kind::function_parameter_t:
case cpp_entity_kind::friend_t:
case cpp_entity_kind::template_type_parameter_t:
case cpp_entity_kind::non_type_template_parameter_t:
case cpp_entity_kind::template_template_parameter_t:
case cpp_entity_kind::alias_template_t:
case cpp_entity_kind::variable_template_t:
case cpp_entity_kind::static_assert_t:
case cpp_entity_kind::unexposed_t:
return nullptr;
case cpp_entity_kind::count:
break;
}
DEBUG_UNREACHABLE(detail::assert_handler{});
return nullptr;
}
type_safe::optional_ref<const cpp_entity> get_definition_impl(const cpp_entity_index& idx,
const cpp_entity& e)
{
auto declarable = get_declarable(e);
if (!declarable || declarable.value().is_definition())
// not declarable or is a definition
// return reference to entity itself
return type_safe::ref(e);
// else lookup definition
return idx.lookup_definition(declarable.value().definition().value());
}
} // namespace
bool cppast::is_definition(const cpp_entity& e) noexcept
{
auto declarable = get_declarable(e);
return declarable && declarable.value().is_definition();
}
type_safe::optional_ref<const cpp_entity> cppast::get_definition(const cpp_entity_index& idx,
const cpp_entity& e)
{
return get_definition_impl(idx, e);
}
type_safe::optional_ref<const cpp_enum> cppast::get_definition(const cpp_entity_index& idx,
const cpp_enum& e)
{
return get_definition_impl(idx, e).map([](const cpp_entity& e) {
DEBUG_ASSERT(e.kind() == cpp_entity_kind::enum_t, detail::assert_handler{});
return type_safe::ref(static_cast<const cpp_enum&>(e));
});
}
type_safe::optional_ref<const cpp_class> cppast::get_definition(const cpp_entity_index& idx,
const cpp_class& e)
{
return get_definition_impl(idx, e).map([](const cpp_entity& e) {
DEBUG_ASSERT(e.kind() == cpp_entity_kind::class_t, detail::assert_handler{});
return type_safe::ref(static_cast<const cpp_class&>(e));
});
}
type_safe::optional_ref<const cpp_variable> cppast::get_definition(const cpp_entity_index& idx,
const cpp_variable& e)
{
return get_definition_impl(idx, e).map([](const cpp_entity& e) {
DEBUG_ASSERT(e.kind() == cpp_entity_kind::variable_t, detail::assert_handler{});
return type_safe::ref(static_cast<const cpp_variable&>(e));
});
}
type_safe::optional_ref<const cpp_function_base> cppast::get_definition(const cpp_entity_index& idx,
const cpp_function_base& e)
{
return get_definition_impl(idx, e).map([](const cpp_entity& e) {
DEBUG_ASSERT(is_function(e.kind()), detail::assert_handler{});
return type_safe::ref(static_cast<const cpp_function_base&>(e));
});
}