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tree.hh
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1 
6 #ifndef TREE_TREE_HH
7 # define TREE_TREE_HH
8 
9 # include <iosfwd>
10 
11 # include <temp/temp.hh>
12 # include <tree/fwd.hh>
13 
14 // FIXME: This class is truly ugly and needs being reworked. Pay
15 // attention to child_push_back and child_set, it is abnormal and they
16 // do more or less the same thing.
17 
18 namespace tree
19 {
20 
21  class Tree
22  {
23  public:
25  Tree();
27  Tree(const tree_list_type& children);
29  virtual ~Tree();
30 
33 
40  typedef enum
41  {
42  const_kind, name_kind, temp_kind, binop_kind, mem_kind,
43  call_kind, eseq_kind, move_kind, sxp_kind, jump_kind,
44  cjump_kind, seq_kind, label_kind
45  } kind_tree_type;
46 
48  virtual kind_tree_type kind_get() const = 0;
50 
51  // All the children
52  void child_push_back(const rTree& tree);
53  tree_list_type& children_get();
54  const tree_list_type& children_get() const;
55 
56  private:
57  void child_set(rTree& dst, const rTree& src);
58 
59  public:
60  // Start at 0, of course.
61  rTree& child_get(int nth);
62  rTree child_get(int nth) const;
63  rTree& left_get();
64  rTree& right_get();
65 
66  // parent
67  void parent_get_assert() const;
68  Tree* parent_get();
69  const Tree* parent_get() const;
70  void parent_set(Tree* parent);
71 
72  // (in-place) replacement
73  void replace_by(const rTree& tree);
74 
76  virtual std::ostream& tag_print(std::ostream& o) const = 0;
78  virtual std::ostream& dump(std::ostream& o) const;
79 
80  public:
81  // temp::Temp management for asm output.
82  temp::Temp& asm_get();
83  void asm_set(const temp::Temp& temp);
84 
85  // State management for asm output.
86  void* state_get() const;
87  void*& state_get();
88 
89  // Reduced state.
90  bool reducible_get() const;
91  void reducible_set(bool b);
92 
93  protected:
94  friend std::ostream& operator<<(std::ostream& ostr, const Tree& tree);
95 
96  protected:
98  tree_list_type children_;
100  Tree* parent_ = nullptr;
102  temp::Temp* temp_ = nullptr;
104  void* state_ = nullptr;
106  bool reducible_ = true;
107  };
108 
110  std::ostream& operator<<(std::ostream& o, const Tree& t);
111 }
112 
113 # include <tree/tree.hxx>
114 
115 #endif // !TREE_TREE_HH