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0001 // ct_lvtgshr_loaderinfo.h                                            -*-C++-*-
0002 
0003 /*
0004 // Copyright 2023 Codethink Ltd <codethink@codethink.co.uk>
0005 // SPDX-License-Identifier: Apache-2.0
0006 //
0007 // Licensed under the Apache License, Version 2.0 (the "License");
0008 // you may not use this file except in compliance with the License.
0009 // You may obtain a copy of the License at
0010 //
0011 //     http://www.apache.org/licenses/LICENSE-2.0
0012 //
0013 // Unless required by applicable law or agreed to in writing, software
0014 // distributed under the License is distributed on an "AS IS" BASIS,
0015 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0016 // See the License for the specific language governing permissions and
0017 // limitations under the License.
0018 */
0019 
0020 //@PURPOSE: Store information about what the loader did and did not load for
0021 //          a particular vertex
0022 //
0023 //@CLASSES:
0024 //  lvtshr::LoaderInfo
0025 //
0026 //@SEE_ALSO: lvtldr::PhysicalLoader
0027 
0028 #ifndef INCLUDED_CT_LVTSHR_LOADERINFO
0029 #define INCLUDED_CT_LVTSHR_LOADERINFO
0030 
0031 #include <lvtshr_export.h>
0032 
0033 #include <optional>
0034 
0035 namespace Codethink::lvtshr {
0036 
0037 class LVTSHR_EXPORT LoaderInfo {
0038   private:
0039     // PRIVATE DATA
0040     bool d_valid = false;
0041 
0042     bool d_hasAllChildren = false;
0043     bool d_hasParent = false;
0044     bool d_hasAllEdges = false;
0045 
0046   public:
0047     // CREATORS
0048     LoaderInfo();
0049     // Default constructor for d_valid = false
0050 
0051     LoaderInfo(bool hasAllChildren, bool hasParent, bool hasAllEdges);
0052     // Constructor for valid = true
0053 
0054     // ACCESSORS
0055     [[nodiscard]] bool isValid() const;
0056     // returns whether we have information for this vertex. If this returns
0057     // true then it is safe to assume all accessors returning std::optional
0058     // can be dereferenced, otherwise none of them can be dereferenced
0059 
0060     [[nodiscard]] std::optional<bool> hasAllChildren() const;
0061     // If isValid(), returns if this vertex already has all of its children
0062 
0063     [[nodiscard]] std::optional<bool> hasParent() const;
0064     // If isValid(), returns if this vertex already has its direct parent
0065     // loaded
0066 
0067     [[nodiscard]] std::optional<bool> hasAllEdges() const;
0068     // If isValid(), returns if this vertex already has all of its edges
0069     // loaded
0070 
0071     // MODIFIERS
0072     void setHasParent(bool hasParent);
0073 };
0074 
0075 } // end namespace Codethink::lvtshr
0076 
0077 #endif // INCLUDED_CT_LVTSHR_LOADERINFO