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
|
// © 2017 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#ifndef __NUMBER_FORMATIMPL_H__
#define __NUMBER_FORMATIMPL_H__
#include "number_types.h"
#include "number_stringbuilder.h"
#include "number_patternstring.h"
#include "number_utils.h"
#include "number_patternmodifier.h"
#include "number_longnames.h"
#include "number_compact.h"
#include "number_microprops.h"
U_NAMESPACE_BEGIN namespace number {
namespace impl {
/**
* This is the "brain" of the number formatting pipeline. It ties all the pieces together, taking in a MacroProps and a
* DecimalQuantity and outputting a properly formatted number string.
*/
class NumberFormatterImpl : public UMemory {
public:
/**
* Builds a "safe" MicroPropsGenerator, which is thread-safe and can be used repeatedly.
* The caller owns the returned NumberFormatterImpl.
*/
NumberFormatterImpl(const MacroProps ¯os, UErrorCode &status);
/**
* Builds and evaluates an "unsafe" MicroPropsGenerator, which is cheaper but can be used only once.
*/
static int32_t
formatStatic(const MacroProps ¯os, DecimalQuantity &inValue, NumberStringBuilder &outString,
UErrorCode &status);
/**
* Prints only the prefix and suffix; used for DecimalFormat getters.
*
* @return The index into the output at which the prefix ends and the suffix starts; in other words,
* the prefix length.
*/
static int32_t getPrefixSuffixStatic(const MacroProps& macros, int8_t signum,
StandardPlural::Form plural, NumberStringBuilder& outString,
UErrorCode& status);
/**
* Evaluates the "safe" MicroPropsGenerator created by "fromMacros".
*/
int32_t format(DecimalQuantity& inValue, NumberStringBuilder& outString, UErrorCode& status) const;
/**
* Like format(), but saves the result into an output MicroProps without additional processing.
*/
void preProcess(DecimalQuantity& inValue, MicroProps& microsOut, UErrorCode& status) const;
/**
* Like getPrefixSuffixStatic() but uses the safe compiled object.
*/
int32_t getPrefixSuffix(int8_t signum, StandardPlural::Form plural, NumberStringBuilder& outString,
UErrorCode& status) const;
/**
* Synthesizes the output string from a MicroProps and DecimalQuantity.
* This method formats only the main number, not affixes.
*/
static int32_t writeNumber(const MicroProps& micros, DecimalQuantity& quantity,
NumberStringBuilder& string, int32_t index, UErrorCode& status);
/**
* Adds the affixes. Intended to be called immediately after formatNumber.
*/
static int32_t writeAffixes(const MicroProps& micros, NumberStringBuilder& string, int32_t start,
int32_t end, UErrorCode& status);
private:
// Head of the MicroPropsGenerator linked list:
const MicroPropsGenerator *fMicroPropsGenerator = nullptr;
// Tail of the list:
MicroProps fMicros;
// Other fields possibly used by the number formatting pipeline:
// TODO: Convert more of these LocalPointers to value objects to reduce the number of news?
LocalPointer<const DecimalFormatSymbols> fSymbols;
LocalPointer<const PluralRules> fRules;
LocalPointer<const ParsedPatternInfo> fPatternInfo;
LocalPointer<const ScientificHandler> fScientificHandler;
LocalPointer<MutablePatternModifier> fPatternModifier;
LocalPointer<const ImmutablePatternModifier> fImmutablePatternModifier;
LocalPointer<const LongNameHandler> fLongNameHandler;
LocalPointer<const CompactHandler> fCompactHandler;
// Value objects possibly used by the number formatting pipeline:
struct Warehouse {
CurrencySymbols fCurrencySymbols;
} fWarehouse;
NumberFormatterImpl(const MacroProps ¯os, bool safe, UErrorCode &status);
MicroProps& preProcessUnsafe(DecimalQuantity &inValue, UErrorCode &status);
int32_t getPrefixSuffixUnsafe(int8_t signum, StandardPlural::Form plural,
NumberStringBuilder& outString, UErrorCode& status);
/**
* If rulesPtr is non-null, return it. Otherwise, return a PluralRules owned by this object for the
* specified locale, creating it if necessary.
*/
const PluralRules *
resolvePluralRules(const PluralRules *rulesPtr, const Locale &locale, UErrorCode &status);
/**
* Synthesizes the MacroProps into a MicroPropsGenerator. All information, including the locale, is encoded into the
* MicroPropsGenerator, except for the quantity itself, which is left abstract and must be provided to the returned
* MicroPropsGenerator instance.
*
* @see MicroPropsGenerator
* @param macros
* The {@link MacroProps} to consume. This method does not mutate the MacroProps instance.
* @param safe
* If true, the returned MicroPropsGenerator will be thread-safe. If false, the returned value will
* <em>not</em> be thread-safe, intended for a single "one-shot" use only. Building the thread-safe
* object is more expensive.
*/
const MicroPropsGenerator *
macrosToMicroGenerator(const MacroProps ¯os, bool safe, UErrorCode &status);
static int32_t
writeIntegerDigits(const MicroProps µs, DecimalQuantity &quantity, NumberStringBuilder &string,
int32_t index, UErrorCode &status);
static int32_t
writeFractionDigits(const MicroProps µs, DecimalQuantity &quantity, NumberStringBuilder &string,
int32_t index, UErrorCode &status);
};
} // namespace impl
} // namespace number
U_NAMESPACE_END
#endif //__NUMBER_FORMATIMPL_H__
#endif /* #if !UCONFIG_NO_FORMATTING */
|
