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58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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// DESCRIPTION: Verilator: Virtual function calls - function finder
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//
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// Code available from: https://verilator.org
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//
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//*************************************************************************
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//
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of either the GNU Lesser General Public License Version 3
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// or the Perl Artistic License Version 2.0.
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// SPDX-FileCopyrightText: 2003-2026 Wilson Snyder
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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//
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//*************************************************************************
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#ifndef VERILATOR_V3CLASS_GRAPH_H_
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#define VERILATOR_V3CLASS_GRAPH_H_
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#include "config_build.h"
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#include "verilatedos.h"
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#include "V3Ast.h"
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#include "V3Graph.h"
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#include <memory>
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#include <unordered_map>
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#include <unordered_set>
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//============================================================================
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class V3ClassGraphVertex;
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// Graph of classes - build by V3ClassGraph::build() and used to get CFuncs that may be
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// called by a AstNodeCCall (due to virtualization)
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class V3ClassGraph final : public V3Graph {
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friend class ClassGraphBuilderVisitor;
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std::unordered_map<const AstCFunc*, V3ClassGraphVertex*>
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m_memberFuncToClassVertex; // Map from member function to its class
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const std::unordered_set<AstCFunc*>
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m_emptySet; // Always empty set - used to return a reference to an empty set
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V3ClassGraph() = default;
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public:
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static std::unique_ptr<V3ClassGraph> build(AstNetlist*);
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~V3ClassGraph() override = default;
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// Returns possible CFuncs that may be called due to a NodeCCall passed as a callp argument
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// Warning: returned set may be empty if NodeCCall is a New call or a super call - in such
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// cases only `callp->funcp()` may be called. Also, if callp is to a non-member function the
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// set will be empty - post V3Task static functions are not member functions anymore.
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const std::unordered_set<AstCFunc*>&
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getCallPossibleCFuncs(const AstNodeCCall* const callp) const&;
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};
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#endif // Guard
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