49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
//===- IPDBEnumChildren.h - base interface for child enumerator -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H
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#define LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H
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#include <cassert>
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#include <cstdint>
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#include <memory>
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namespace llvm {
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namespace pdb {
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template <typename ChildType> class IPDBEnumChildren {
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public:
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using ChildTypePtr = std::unique_ptr<ChildType>;
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using MyType = IPDBEnumChildren<ChildType>;
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virtual ~IPDBEnumChildren() = default;
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virtual uint32_t getChildCount() const = 0;
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virtual ChildTypePtr getChildAtIndex(uint32_t Index) const = 0;
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virtual ChildTypePtr getNext() = 0;
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virtual void reset() = 0;
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};
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template <typename ChildType>
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class NullEnumerator : public IPDBEnumChildren<ChildType> {
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virtual uint32_t getChildCount() const override { return 0; }
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virtual std::unique_ptr<ChildType>
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getChildAtIndex(uint32_t Index) const override {
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return nullptr;
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}
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virtual std::unique_ptr<ChildType> getNext() override {
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return nullptr;
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}
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virtual void reset() override {}
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};
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} // end namespace pdb
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H
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