ICU 75.1 75.1

messageformat2_arguments.h
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1 // © 2024 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3
4 #include "unicode/utypes.h"
5
6 #ifndef MESSAGEFORMAT2_ARGUMENTS_H
7 #define MESSAGEFORMAT2_ARGUMENTS_H
8
9 #if U_SHOW_CPLUSPLUS_API
10
11 #if !UCONFIG_NO_FORMATTING
12
13 #if !UCONFIG_NO_MF2
14
20 #include "unicode/messageformat2_data_model_names.h"
21 #include "unicode/messageformat2_formattable.h"
22 #include "unicode/unistr.h"
23
24 #ifndef U_HIDE_DEPRECATED_API
25
26 #include <map>
27
28 U_NAMESPACE_BEGIN
29
31 // Export an explicit template instantiation of the LocalPointer that is used as a
32 // data member of various MessageFormatDataModel classes.
33 // (When building DLLs for Windows this is required.)
34 // (See measunit_impl.h, datefmt.h, collationiterator.h, erarules.h and others
35 // for similar examples.)
36 #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
37 template class U_I18N_API LocalPointerBase<UnicodeString>;
38 template class U_I18N_API LocalPointerBase<message2::Formattable>;
39 template class U_I18N_API LocalArray<UnicodeString>;
40 template class U_I18N_API LocalArray<message2::Formattable>;
41 #endif
43
44 namespace message2 {
45
46 class MessageContext;
47
48 // Arguments
49 // ----------
50
59 class U_I18N_API MessageArguments : public UObject {
60 public:
72 MessageArguments(const std::map<UnicodeString, Formattable>& args, UErrorCode& status) {
73 if (U_FAILURE(status)) {
74 return;
75 }
76 argumentNames = LocalArray<UnicodeString>(new UnicodeString[argsLen = (int32_t) args.size()]);
77 arguments = LocalArray<Formattable>(new Formattable[argsLen]);
78 if (!argumentNames.isValid() || !arguments.isValid()) {
79 status = U_MEMORY_ALLOCATION_ERROR;
80 return;
81 }
82 int32_t i = 0;
83 for (auto iter = args.begin(); iter != args.end(); ++iter) {
84 argumentNames[i] = iter->first;
85 arguments[i] = iter->second;
86 i++;
87 }
88 }
96 MessageArguments& operator=(MessageArguments&&) noexcept;
104 MessageArguments() = default;
111 virtual ~MessageArguments();
112 private:
113 friend class MessageContext;
114
115 const Formattable* getArgument(const data_model::VariableName&, UErrorCode&) const;
116
117 // Avoids using Hashtable so that code constructing a Hashtable
118 // doesn't have to appear in this header file
119 LocalArray<UnicodeString> argumentNames;
120 LocalArray<Formattable> arguments;
121 int32_t argsLen = 0;
122 }; // class MessageArguments
123
124 } // namespace message2
125
126 U_NAMESPACE_END
127
128 #endif // U_HIDE_DEPRECATED_API
129
130 #endif /* #if !UCONFIG_NO_MF2 */
131
132 #endif /* #if !UCONFIG_NO_FORMATTING */
133
134 #endif /* U_SHOW_CPLUSPLUS_API */
135
136 #endif // MESSAGEFORMAT2_ARGUMENTS_H
137
138 // eof
icu::LocalArray
"Smart pointer" class, deletes objects via the C++ array delete[] operator.
Definition: localpointer.h:366
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
icu::message2::Formattable
The Formattable class represents a typed value that can be formatted, originating either from a messa...
Definition: messageformat2_formattable.h:116
icu::message2::MessageArguments
The MessageArguments class represents the named arguments to a message.
Definition: messageformat2_arguments.h:59
icu::message2::MessageArguments::MessageArguments
MessageArguments(const std::map< UnicodeString, Formattable > &args, UErrorCode &status)
Message arguments constructor, which takes a map and returns a container of arguments that can be pas...
Definition: messageformat2_arguments.h:72
icu::message2::MessageArguments::operator=
MessageArguments & operator=(MessageArguments &&) noexcept
Move operator: The source MessageArguments will be left in a valid but undefined state.
unistr.h
C++ API: Unicode String.
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
U_MEMORY_ALLOCATION_ERROR
@ U_MEMORY_ALLOCATION_ERROR
Memory allocation error.
Definition: utypes.h:458
U_FAILURE
#define U_FAILURE(x)
Does the error code indicate a failure?
Definition: utypes.h:733
U_I18N_API
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside.
Definition: utypes.h:301