2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
//===- lld/Core/Node.h - Input file class -----------------------*- 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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///
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/// \file
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///
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/// The classes in this file represents inputs to the linker.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLD_CORE_NODE_H
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#define LLD_CORE_NODE_H
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#include "lld/Core/File.h"
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#include <algorithm>
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#include <memory>
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namespace lld {
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// A Node represents a FileNode or other type of Node. In the latter case,
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// the node contains meta information about the input file list.
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// Currently only GroupEnd node is defined as a meta node.
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class Node {
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public:
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enum class Kind { File, GroupEnd };
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explicit Node(Kind type) : _kind(type) {}
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virtual ~Node() = default;
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virtual Kind kind() const { return _kind; }
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private:
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Kind _kind;
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};
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// This is a marker for --end-group. getSize() returns the number of
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// files between the corresponding --start-group and this marker.
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class GroupEnd : public Node {
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public:
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explicit GroupEnd(int size) : Node(Kind::GroupEnd), _size(size) {}
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int getSize() const { return _size; }
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static bool classof(const Node *a) {
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return a->kind() == Kind::GroupEnd;
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}
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private:
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int _size;
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};
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// A container of File.
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class FileNode : public Node {
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public:
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explicit FileNode(std::unique_ptr<File> f)
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: Node(Node::Kind::File), _file(std::move(f)) {}
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static bool classof(const Node *a) {
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return a->kind() == Node::Kind::File;
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}
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File *getFile() { return _file.get(); }
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protected:
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std::unique_ptr<File> _file;
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};
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} // end namespace lld
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#endif // LLD_CORE_NODE_H
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