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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#ifndef TRANSFORM_NODE_H
#define TRANSFORM_NODE_H
#include <Transform/Data.h>
namespace Transform
{
class Node;
typedef IceUtil::Handle<Node> NodePtr;
class EntityNode;
typedef IceUtil::Handle<EntityNode> EntityNodePtr;
class EvaluateException : public IceUtil::Exception
{
public:
EvaluateException(const char*, int, const std::string&);
virtual std::string ice_name() const;
virtual void ice_print(std::ostream&) const;
virtual IceUtil::Exception* ice_clone() const;
virtual void ice_throw() const;
std::string reason() const;
private:
std::string _reason;
};
class SymbolTable
{
public:
virtual ~SymbolTable();
virtual DataPtr getValue(const EntityNodePtr&) const = 0;
virtual DataPtr getConstantValue(const std::string&) const = 0;
};
class Node : public IceUtil::SimpleShared
{
public:
virtual ~Node();
virtual DataPtr evaluate(SymbolTable&) = 0;
virtual void print(std::ostream&) const = 0;
};
enum BinaryOperator
{
BinOpOr, BinOpAnd,
BinOpMul, BinOpDiv, BinOpMod,
BinOpAdd, BinOpSub,
BinOpLess, BinOpGreater, BinOpLessEq, BinOpGrEq, BinOpEq, BinOpNotEq
};
class BinaryNode : public Node
{
public:
BinaryNode(BinaryOperator, const DataFactoryPtr&, const NodePtr&, const NodePtr&);
virtual DataPtr evaluate(SymbolTable&);
virtual void print(std::ostream&) const;
private:
static std::string opToString(BinaryOperator);
BinaryOperator _op;
DataFactoryPtr _factory;
NodePtr _left;
NodePtr _right;
};
enum UnaryOperator { UnaryOpNeg, UnaryOpNot };
class UnaryNode : public Node
{
public:
UnaryNode(UnaryOperator, const DataFactoryPtr&, const NodePtr&);
virtual DataPtr evaluate(SymbolTable&);
virtual void print(std::ostream&) const;
private:
static std::string opToString(UnaryOperator);
UnaryOperator _op;
DataFactoryPtr _factory;
NodePtr _right;
};
class DataNode : public Node
{
public:
DataNode(const DataPtr&);
virtual DataPtr evaluate(SymbolTable&);
virtual void print(std::ostream&) const;
private:
DataPtr _data;
};
class EntityNodeVisitor
{
public:
virtual ~EntityNodeVisitor();
virtual void visitIdentifier(const std::string&) = 0;
virtual void visitElement(const NodePtr&) = 0;
};
class EntityNode : public Node
{
public:
virtual DataPtr evaluate(SymbolTable&);
virtual void print(std::ostream&) const;
virtual void visit(EntityNodeVisitor&) const = 0;
void append(const EntityNodePtr&);
protected:
EntityNodePtr _next;
};
class IdentNode : public EntityNode
{
public:
IdentNode(const std::string&);
virtual void visit(EntityNodeVisitor&) const;
std::string getValue() const;
private:
std::string _value;
};
typedef IceUtil::Handle<IdentNode> IdentNodePtr;
class ElementNode : public EntityNode
{
public:
ElementNode(const NodePtr&);
virtual void visit(EntityNodeVisitor&) const;
NodePtr getValue() const;
private:
NodePtr _value;
};
typedef IceUtil::Handle<ElementNode> ElementNodePtr;
class ConstantNode : public Node
{
public:
ConstantNode(const std::string&);
virtual DataPtr evaluate(SymbolTable&);
virtual void print(std::ostream&) const;
private:
std::string _value;
};
} // End of namespace Transform
std::ostream& operator<<(std::ostream&, const Transform::EntityNodePtr&);
#endif
|
