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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef TRANSFRMX_EXPRRESULT_H
#define TRANSFRMX_EXPRRESULT_H
#include "nsString.h"
#include "nsAutoPtr.h"
#include "txCore.h"
#include "txResultRecycler.h"
/*
* ExprResult
*
* Classes Represented:
* BooleanResult, ExprResult, NumberResult, StringResult
*
* Note: for NodeSet, see NodeSet.h
*/
class txAExprResult
{
public:
friend class txResultRecycler;
// Update txLiteralExpr::getReturnType and sTypes in txEXSLTFunctions.cpp if
// this enum is changed.
enum ResultType {
NODESET = 0,
BOOLEAN,
NUMBER,
STRING,
RESULT_TREE_FRAGMENT
};
explicit txAExprResult(txResultRecycler* aRecycler) : mRecycler(aRecycler)
{
}
virtual ~txAExprResult()
{
}
void AddRef()
{
++mRefCnt;
NS_LOG_ADDREF(this, mRefCnt, "txAExprResult", sizeof(*this));
}
void Release(); // Implemented in txResultRecycler.cpp
/**
* Returns the type of ExprResult represented
* @return the type of ExprResult represented
**/
virtual short getResultType() = 0;
/**
* Creates a String representation of this ExprResult
* @param aResult the destination string to append the String
* representation to.
**/
virtual void stringValue(nsString& aResult) = 0;
/**
* Returns a pointer to the stringvalue if possible. Otherwise null is
* returned.
*/
virtual const nsString* stringValuePointer() = 0;
/**
* Converts this ExprResult to a Boolean (bool) value
* @return the Boolean value
**/
virtual bool booleanValue() = 0;
/**
* Converts this ExprResult to a Number (double) value
* @return the Number value
**/
virtual double numberValue() = 0;
private:
nsAutoRefCnt mRefCnt;
RefPtr<txResultRecycler> mRecycler;
};
#define TX_DECL_EXPRRESULT \
virtual short getResultType(); \
virtual void stringValue(nsString& aString); \
virtual const nsString* stringValuePointer(); \
virtual bool booleanValue(); \
virtual double numberValue(); \
class BooleanResult : public txAExprResult {
public:
explicit BooleanResult(bool aValue);
TX_DECL_EXPRRESULT
private:
bool value;
};
class NumberResult : public txAExprResult {
public:
NumberResult(double aValue, txResultRecycler* aRecycler);
TX_DECL_EXPRRESULT
double value;
};
class StringResult : public txAExprResult {
public:
explicit StringResult(txResultRecycler* aRecycler);
StringResult(const nsAString& aValue, txResultRecycler* aRecycler);
TX_DECL_EXPRRESULT
nsString mValue;
};
#endif
|
