| 1 | /* |
| 2 | * Copyright (c) 2020 Philippe Proulx <pproulx@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | */ |
| 6 | |
| 7 | #ifndef BABELTRACE_CPP_COMMON_BT2_FIELD_PATH_HPP |
| 8 | #define BABELTRACE_CPP_COMMON_BT2_FIELD_PATH_HPP |
| 9 | |
| 10 | #include <cstdint> |
| 11 | #include <babeltrace2/babeltrace.h> |
| 12 | |
| 13 | #include "common/assert.h" |
| 14 | #include "common-iter.hpp" |
| 15 | #include "internal/borrowed-obj.hpp" |
| 16 | #include "internal/shared-obj.hpp" |
| 17 | |
| 18 | namespace bt2 { |
| 19 | |
| 20 | class ConstIndexFieldPathItem; |
| 21 | |
| 22 | enum class FieldPathItemType |
| 23 | { |
| 24 | INDEX = BT_FIELD_PATH_ITEM_TYPE_INDEX, |
| 25 | CURRENT_ARRAY_ELEMENT = BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT, |
| 26 | CURRENT_OPTION_CONTENT = BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT, |
| 27 | }; |
| 28 | |
| 29 | class ConstFieldPathItem : public internal::BorrowedObj<const bt_field_path_item> |
| 30 | { |
| 31 | public: |
| 32 | explicit ConstFieldPathItem(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr} |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | ConstFieldPathItem(const ConstFieldPathItem& fpItem) noexcept : _ThisBorrowedObj {fpItem} |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | ConstFieldPathItem& operator=(const ConstFieldPathItem& fpItem) noexcept |
| 41 | { |
| 42 | _ThisBorrowedObj::operator=(fpItem); |
| 43 | return *this; |
| 44 | } |
| 45 | |
| 46 | FieldPathItemType type() const noexcept |
| 47 | { |
| 48 | return static_cast<FieldPathItemType>(this->_libType()); |
| 49 | } |
| 50 | |
| 51 | bool isIndex() const noexcept |
| 52 | { |
| 53 | return this->_libType() == BT_FIELD_PATH_ITEM_TYPE_INDEX; |
| 54 | } |
| 55 | |
| 56 | bool isCurrentArrayElement() const noexcept |
| 57 | { |
| 58 | return this->_libType() == BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT; |
| 59 | } |
| 60 | |
| 61 | bool isCurrentOptionContent() const noexcept |
| 62 | { |
| 63 | return this->_libType() == BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT; |
| 64 | } |
| 65 | |
| 66 | ConstIndexFieldPathItem asIndex() const noexcept; |
| 67 | |
| 68 | private: |
| 69 | bt_field_path_item_type _libType() const noexcept |
| 70 | { |
| 71 | return bt_field_path_item_get_type(this->libObjPtr()); |
| 72 | } |
| 73 | }; |
| 74 | |
| 75 | class ConstIndexFieldPathItem final : public ConstFieldPathItem |
| 76 | { |
| 77 | public: |
| 78 | explicit ConstIndexFieldPathItem(const _LibObjPtr libObjPtr) noexcept : |
| 79 | ConstFieldPathItem {libObjPtr} |
| 80 | { |
| 81 | BT_ASSERT_DBG(this->isIndex()); |
| 82 | } |
| 83 | |
| 84 | ConstIndexFieldPathItem(const ConstIndexFieldPathItem& fpItem) noexcept : |
| 85 | ConstFieldPathItem {fpItem} |
| 86 | { |
| 87 | } |
| 88 | |
| 89 | ConstIndexFieldPathItem& operator=(const ConstIndexFieldPathItem& fpItem) noexcept |
| 90 | { |
| 91 | ConstFieldPathItem::operator=(fpItem); |
| 92 | return *this; |
| 93 | } |
| 94 | |
| 95 | std::uint64_t index() const noexcept |
| 96 | { |
| 97 | return bt_field_path_item_index_get_index(this->libObjPtr()); |
| 98 | } |
| 99 | }; |
| 100 | |
| 101 | inline ConstIndexFieldPathItem ConstFieldPathItem::asIndex() const noexcept |
| 102 | { |
| 103 | BT_ASSERT_DBG(this->isIndex()); |
| 104 | return ConstIndexFieldPathItem {this->libObjPtr()}; |
| 105 | } |
| 106 | |
| 107 | namespace internal { |
| 108 | |
| 109 | struct FieldPathRefFuncs final |
| 110 | { |
| 111 | static void get(const bt_field_path * const libObjPtr) |
| 112 | { |
| 113 | bt_field_path_get_ref(libObjPtr); |
| 114 | } |
| 115 | |
| 116 | static void put(const bt_field_path * const libObjPtr) |
| 117 | { |
| 118 | bt_field_path_put_ref(libObjPtr); |
| 119 | } |
| 120 | }; |
| 121 | |
| 122 | } /* namespace internal */ |
| 123 | |
| 124 | class ConstFieldPath final : public internal::BorrowedObj<const bt_field_path> |
| 125 | { |
| 126 | public: |
| 127 | using Shared = |
| 128 | internal::SharedObj<ConstFieldPath, const bt_field_path, internal::FieldPathRefFuncs>; |
| 129 | |
| 130 | using Iterator = CommonIterator<ConstFieldPath, ConstFieldPathItem>; |
| 131 | |
| 132 | enum class Scope |
| 133 | { |
| 134 | PACKET_CONTEXT = BT_FIELD_PATH_SCOPE_PACKET_CONTEXT, |
| 135 | EVENT_COMMON_CONTEXT = BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT, |
| 136 | EVENT_SPECIFIC_CONTEXT = BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT, |
| 137 | EVENT_PAYLOAD = BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD, |
| 138 | }; |
| 139 | |
| 140 | explicit ConstFieldPath(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr} |
| 141 | { |
| 142 | } |
| 143 | |
| 144 | ConstFieldPath(const ConstFieldPath& fieldPath) noexcept : _ThisBorrowedObj {fieldPath} |
| 145 | { |
| 146 | } |
| 147 | |
| 148 | ConstFieldPath& operator=(const ConstFieldPath& fieldPath) noexcept |
| 149 | { |
| 150 | _ThisBorrowedObj::operator=(fieldPath); |
| 151 | return *this; |
| 152 | } |
| 153 | |
| 154 | Scope rootScope() const noexcept |
| 155 | { |
| 156 | return static_cast<Scope>(bt_field_path_get_root_scope(this->libObjPtr())); |
| 157 | } |
| 158 | |
| 159 | std::uint64_t size() const noexcept |
| 160 | { |
| 161 | return bt_field_path_get_item_count(this->libObjPtr()); |
| 162 | } |
| 163 | |
| 164 | ConstFieldPathItem operator[](const std::uint64_t index) const noexcept |
| 165 | { |
| 166 | return ConstFieldPathItem { |
| 167 | bt_field_path_borrow_item_by_index_const(this->libObjPtr(), index)}; |
| 168 | } |
| 169 | |
| 170 | Iterator begin() const noexcept |
| 171 | { |
| 172 | return Iterator {*this, 0}; |
| 173 | } |
| 174 | |
| 175 | Iterator end() const noexcept |
| 176 | { |
| 177 | return Iterator {*this, this->size()}; |
| 178 | } |
| 179 | |
| 180 | Shared shared() const noexcept |
| 181 | { |
| 182 | return Shared {*this}; |
| 183 | } |
| 184 | }; |
| 185 | |
| 186 | } /* namespace bt2 */ |
| 187 | |
| 188 | #endif /* BABELTRACE_CPP_COMMON_BT2_FIELD_PATH_HPP */ |