blob: 1bfc4e569071dde6f71b6be0b6661506c4c2193b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#ifndef INC_BaseAST_hpp__
#define INC_BaseAST_hpp__
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/license.html
*
* $Id$
*/
#include <antlr/config.hpp>
#include <antlr/AST.hpp>
#include <iostream>
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
class ANTLR_API BaseAST;
typedef ASTRefCount<BaseAST> RefBaseAST;
class ANTLR_API BaseAST : public AST {
public:
BaseAST() : AST()
{
}
BaseAST(const BaseAST& other)
: AST(other)
{
}
virtual ~BaseAST()
{
}
/// Return the class name
virtual const char* typeName( void ) const = 0;
/// Clone this AST node.
virtual RefAST clone( void ) const = 0;
/// Is node t equal to this in terms of token type and text?
virtual bool equals(RefAST t) const;
/** Is t an exact structural and equals() match of this tree. The
* 'this' reference is considered the start of a sibling list.
*/
virtual bool equalsList(RefAST t) const;
/** Is 't' a subtree of this list? The siblings of the root are NOT ignored.
*/
virtual bool equalsListPartial(RefAST t) const;
/** Is tree rooted at 'this' equal to 't'? The siblings of 'this' are
* ignored.
*/
virtual bool equalsTree(RefAST t) const;
/** Is 't' a subtree of the tree rooted at 'this'? The siblings of
* 'this' are ignored.
*/
virtual bool equalsTreePartial(RefAST t) const;
/** Walk the tree looking for all exact subtree matches. Return
* an ASTEnumerator that lets the caller walk the list
* of subtree roots found herein.
*/
virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAll(RefAST t);
/** Walk the tree looking for all subtrees. Return
* an ASTEnumerator that lets the caller walk the list
* of subtree roots found herein.
*/
virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAllPartial(RefAST t);
/// Add a node to the end of the child list for this node
virtual void addChild(RefAST c)
{
if( !c )
return;
RefBaseAST tmp = down;
if (tmp)
{
while (tmp->right)
tmp = tmp->right;
tmp->right = c;
}
else
down = c;
}
/** Get the number of child nodes of this node (shallow e.g. not of the
* whole tree it spans).
*/
virtual size_t getNumberOfChildren() const;
/// Get the first child of this node; null if no children
virtual RefAST getFirstChild() const
{
return RefAST(down);
}
/// Get the next sibling in line after this one
virtual RefAST getNextSibling() const
{
return RefAST(right);
}
/// Get the token text for this node
virtual ANTLR_USE_NAMESPACE(std)string getText() const
{
return "";
}
/// Get the token type for this node
virtual int getType() const
{
return 0;
}
/// Remove all children
virtual void removeChildren()
{
down = static_cast<BaseAST*>(static_cast<AST*>(nullAST));
}
/// Set the first child of a node.
virtual void setFirstChild(RefAST c)
{
down = static_cast<BaseAST*>(static_cast<AST*>(c));
}
/// Set the next sibling after this one.
virtual void setNextSibling(RefAST n)
{
right = static_cast<BaseAST*>(static_cast<AST*>(n));
}
/// Set the token text for this node
virtual void setText(const ANTLR_USE_NAMESPACE(std)string& txt)
{
}
/// Set the token type for this node
virtual void setType(int type)
{
}
#ifdef ANTLR_SUPPORT_XML
/** print attributes of this node to 'out'. Override to customize XML
* output.
* @param out the stream to write the AST attributes to.
*/
virtual bool attributesToStream( ANTLR_USE_NAMESPACE(std)ostream& out ) const;
/** Write this subtree to a stream. Overload this one to customize the XML
* output for AST derived AST-types
* @param output stream
*/
virtual void toStream( ANTLR_USE_NAMESPACE(std)ostream &out ) const;
#endif
/// Return string representation for the AST
virtual ANTLR_USE_NAMESPACE(std)string toString() const
{
return getText();
}
/// Print out a child sibling tree in LISP notation
virtual ANTLR_USE_NAMESPACE(std)string toStringList() const;
virtual ANTLR_USE_NAMESPACE(std)string toStringTree() const;
protected:
RefBaseAST down;
RefBaseAST right;
private:
void doWorkForFindAll(ANTLR_USE_NAMESPACE(std)vector<RefAST>& v,
RefAST target,
bool partialMatch);
};
/** Is node t equal to this in terms of token type and text?
*/
inline bool BaseAST::equals(RefAST t) const
{
if (!t)
return false;
return ((getType() == t->getType()) && (getText() == t->getText()));
}
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
#endif //INC_BaseAST_hpp__
|
