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63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
//===- Support/Tree.h - Generic n-way tree structure ------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class defines a generic N way tree node structure. The tree structure
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// is immutable after creation, but the payload contained within it is not.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_TREE_H
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#define SUPPORT_TREE_H
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#include <vector>
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namespace llvm {
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template<class ConcreteTreeNode, class Payload>
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class Tree {
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std::vector<ConcreteTreeNode*> Children; // This nodes children, if any
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ConcreteTreeNode *Parent; // Parent of this node...
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Payload Data; // Data held in this node...
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protected:
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void setChildren(const std::vector<ConcreteTreeNode*> &children) {
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Children = children;
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}
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public:
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inline Tree(ConcreteTreeNode *parent) : Parent(parent) {}
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inline Tree(const std::vector<ConcreteTreeNode*> &children,
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ConcreteTreeNode *par) : Children(children), Parent(par) {}
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inline Tree(const std::vector<ConcreteTreeNode*> &children,
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ConcreteTreeNode *par, const Payload &data)
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: Children(children), Parent(par), Data(data) {}
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// Tree dtor - Free all children
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inline ~Tree() {
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for (unsigned i = Children.size(); i > 0; --i)
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delete Children[i-1];
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}
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// Tree manipulation/walking routines...
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inline ConcreteTreeNode *getParent() const { return Parent; }
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inline unsigned getNumChildren() const { return Children.size(); }
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inline ConcreteTreeNode *getChild(unsigned i) const {
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assert(i < Children.size() && "Tree::getChild with index out of range!");
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return Children[i];
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}
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// Payload access...
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inline Payload &getTreeData() { return Data; }
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inline const Payload &getTreeData() const { return Data; }
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};
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} // End llvm namespace
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#endif
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