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https://github.com/vtil-project/VTIL-Core
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78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
// Copyright (c) 2020 Can Boluk and contributors of the VTIL Project
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the name of VTIL Project nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#include "unique_identifier.hpp"
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namespace vtil::symbolic
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{
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// Conversion to human-readable format.
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// - Note: Will cache the return value in string_cast as lambda capture if non-const-qualified.
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//
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const std::string& unique_identifier::to_string() const
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{
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static const std::string null_name = "null";
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if ( !value )
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return null_name;
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if ( name_getter.index() == 1 )
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name_getter = std::get<1>( name_getter )( value );
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return std::get<0>( name_getter );
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}
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// Simple comparison operators.
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//
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bool unique_identifier::operator==( const unique_identifier& o ) const
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{
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// If hash mismatch, return false.
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//
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if ( hash_value != o.hash_value ) return false;
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// Check for null.
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//
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if ( !value ) return !o.value;
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if ( !o.value ) return false;
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// Assert internal equivalance.
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//
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return compare_value( *this, o ) == 0;
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}
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bool unique_identifier::operator<( const unique_identifier& o ) const
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{
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// Consider null side less.
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//
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if ( !value ) return o.value;
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if ( !o.value ) return false;
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// Compare by hash.
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//
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if ( hash_value != o.hash_value )
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return hash_value < o.hash_value;
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// Compare internals if equivalent hash.
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//
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return compare_value( *this, o ) < 0;
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}
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};
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