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
|
#ifndef INPUTXSLT_SRC_FUNCTION_BASE_H_
#define INPUTXSLT_SRC_FUNCTION_BASE_H_
#include <xalanc/XPath/XObjectFactory.hpp>
#include <xalanc/XPath/Function.hpp>
#include <xalanc/XPath/XObject.hpp>
#include <boost/optional.hpp>
#include <memory>
#include <tuple>
#include <utility>
#include "common.h"
#include "support/xalan_string.h"
#include "support/filesystem_context.h"
#include "support/include_entity_resolver.h"
#include "support/dom/document_cache.h"
#include "support/type/filter.h"
#include "support/type/xobject_value.h"
namespace InputXSLT {
template <
typename Implementation,
typename... Types
>
class FunctionBase : public xalan::Function {
static const std::size_t maximum_parameter_count = sizeof...(Types);
static const std::size_t minimum_parameter_count = maximum_parameter_count
- std::tuple_size<
typename filter_derived<
boost::optional_detail::optional_tag,
Types...
>::type
>::value;
public:
FunctionBase(IncludeEntityResolver* resolver):
include_resolver_(resolver),
document_cache_(std::make_shared<DomDocumentCache>()) { }
virtual xalan::XObjectPtr execute(
xalan::XPathExecutionContext& executionContext,
xalan::XalanNode* context,
const XObjectArgVectorType& parameters,
const xalan::Locator* locator
) const {
this->validateParameters(
parameters,
executionContext,
context,
locator
);
xalan::XalanDocument* const domDocument(
this->callConstructDocument(
parameters,
std::make_integer_sequence<std::size_t, maximum_parameter_count>()
)
);
xalan::XPathExecutionContext::BorrowReturnMutableNodeRefList nodes(
executionContext
);
nodes->addNodes(
*domDocument->getDocumentElement()->getChildNodes()
);
return executionContext.getXObjectFactory().createNodeSet(nodes);
}
virtual FunctionBase* clone(
xalan::MemoryManager& manager) const {
return xalan::XalanCopyConstruct(
manager,
static_cast<const Implementation&>(*this)
);
}
FunctionBase& operator=(const FunctionBase&) = delete;
bool operator==(const FunctionBase&) const = delete;
protected:
IncludeEntityResolver* const include_resolver_;
private:
std::shared_ptr<DomDocumentCache> document_cache_;
const xalan::XalanDOMString& getError(
xalan::XalanDOMString& result) const {
const std::string startText("The function expects ");
const std::string endText(" parameter(s)");
if ( minimum_parameter_count == maximum_parameter_count ) {
result.assign(std::string(
startText
+ std::to_string(minimum_parameter_count)
+ endText
).data());
} else {
result.assign(std::string(
startText
+ "between "
+ std::to_string(minimum_parameter_count)
+ " and "
+ std::to_string(maximum_parameter_count)
+ endText
).data());
}
return result;
}
template <std::size_t... Index>
xalan::XalanDocument* callConstructDocument(
const XObjectArgVectorType& parameters,
std::integer_sequence<std::size_t, Index...>
) const {
const FilesystemContext context;
XObjectValue valueGetter(&context, this->include_resolver_);
return this->document_cache_->create(
static_cast<const Implementation*>(this)->constructDocument(
context,
valueGetter.get<typename std::tuple_element<
Index,
std::tuple<Types...>
>::type>(
Index < parameters.size()
? parameters[Index]
: xalan::XObjectPtr()
)...
)
);
}
void validateParameters(
const XObjectArgVectorType& parameters,
xalan::XPathExecutionContext& executionContext,
xalan::XalanNode* context,
const xalan::Locator* locator
) const {
const bool anyNull = std::any_of(
parameters.begin(),
parameters.end(),
[](const xalan::XObjectPtr& ptr) -> bool {
return ptr.null();
}
);
if ( parameters.size() > maximum_parameter_count ||
parameters.size() < minimum_parameter_count ||
anyNull ) {
xalan::XPathExecutionContext::GetAndReleaseCachedString guard(
executionContext
);
this->generalError(executionContext, context, locator);
}
}
};
}
#endif // INPUTXSLT_SRC_FUNCTION_BASE_H_
|
