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
|
// © 2018 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
// This file contains one implementation of FormattedValue.
// Other independent implementations should go into their own cpp file for
// better dependency modularization.
#include "unicode/ustring.h"
#include "formattedval_impl.h"
#include "number_types.h"
#include "formatted_string_builder.h"
#include "number_utils.h"
#include "static_unicode_sets.h"
U_NAMESPACE_BEGIN
typedef FormattedStringBuilder::Field Field;
FormattedValueStringBuilderImpl::FormattedValueStringBuilderImpl(Field numericField)
: fNumericField(numericField) {
}
FormattedValueStringBuilderImpl::~FormattedValueStringBuilderImpl() {
}
UnicodeString FormattedValueStringBuilderImpl::toString(UErrorCode&) const {
return fString.toUnicodeString();
}
UnicodeString FormattedValueStringBuilderImpl::toTempString(UErrorCode&) const {
return fString.toTempUnicodeString();
}
Appendable& FormattedValueStringBuilderImpl::appendTo(Appendable& appendable, UErrorCode&) const {
appendable.appendString(fString.chars(), fString.length());
return appendable;
}
UBool FormattedValueStringBuilderImpl::nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const {
// NOTE: MSVC sometimes complains when implicitly converting between bool and UBool
return nextPositionImpl(cfpos, fNumericField, status) ? TRUE : FALSE;
}
UBool FormattedValueStringBuilderImpl::nextFieldPosition(FieldPosition& fp, UErrorCode& status) const {
int32_t rawField = fp.getField();
if (rawField == FieldPosition::DONT_CARE) {
return FALSE;
}
if (rawField < 0 || rawField >= UNUM_FIELD_COUNT) {
status = U_ILLEGAL_ARGUMENT_ERROR;
return FALSE;
}
ConstrainedFieldPosition cfpos;
cfpos.constrainField(UFIELD_CATEGORY_NUMBER, rawField);
cfpos.setState(UFIELD_CATEGORY_NUMBER, rawField, fp.getBeginIndex(), fp.getEndIndex());
if (nextPositionImpl(cfpos, kUndefinedField, status)) {
fp.setBeginIndex(cfpos.getStart());
fp.setEndIndex(cfpos.getLimit());
return TRUE;
}
// Special case: fraction should start after integer if fraction is not present
if (rawField == UNUM_FRACTION_FIELD && fp.getEndIndex() == 0) {
bool inside = false;
int32_t i = fString.fZero;
for (; i < fString.fZero + fString.fLength; i++) {
if (isIntOrGroup(fString.getFieldPtr()[i]) || fString.getFieldPtr()[i] == Field(UFIELD_CATEGORY_NUMBER, UNUM_DECIMAL_SEPARATOR_FIELD)) {
inside = true;
} else if (inside) {
break;
}
}
fp.setBeginIndex(i - fString.fZero);
fp.setEndIndex(i - fString.fZero);
}
return FALSE;
}
void FormattedValueStringBuilderImpl::getAllFieldPositions(FieldPositionIteratorHandler& fpih,
UErrorCode& status) const {
ConstrainedFieldPosition cfpos;
while (nextPositionImpl(cfpos, kUndefinedField, status)) {
fpih.addAttribute(cfpos.getField(), cfpos.getStart(), cfpos.getLimit());
}
}
// Signal the end of the string using a field that doesn't exist and that is
// different from kUndefinedField, which is used for "null field".
static constexpr Field kEndField = Field(0xf, 0xf);
bool FormattedValueStringBuilderImpl::nextPositionImpl(ConstrainedFieldPosition& cfpos, Field numericField, UErrorCode& /*status*/) const {
int32_t fieldStart = -1;
Field currField = kUndefinedField;
for (int32_t i = fString.fZero + cfpos.getLimit(); i <= fString.fZero + fString.fLength; i++) {
Field _field = (i < fString.fZero + fString.fLength) ? fString.getFieldPtr()[i] : kEndField;
// Case 1: currently scanning a field.
if (currField != kUndefinedField) {
if (currField != _field) {
int32_t end = i - fString.fZero;
// Grouping separators can be whitespace; don't throw them out!
if (currField != Field(UFIELD_CATEGORY_NUMBER, UNUM_GROUPING_SEPARATOR_FIELD)) {
end = trimBack(i - fString.fZero);
}
if (end <= fieldStart) {
// Entire field position is ignorable; skip.
fieldStart = -1;
currField = kUndefinedField;
i--; // look at this index again
continue;
}
int32_t start = fieldStart;
if (currField != Field(UFIELD_CATEGORY_NUMBER, UNUM_GROUPING_SEPARATOR_FIELD)) {
start = trimFront(start);
}
cfpos.setState(currField.getCategory(), currField.getField(), start, end);
return true;
}
continue;
}
// Special case: coalesce the INTEGER if we are pointing at the end of the INTEGER.
if (cfpos.matchesField(UFIELD_CATEGORY_NUMBER, UNUM_INTEGER_FIELD)
&& i > fString.fZero
// don't return the same field twice in a row:
&& i - fString.fZero > cfpos.getLimit()
&& isIntOrGroup(fString.getFieldPtr()[i - 1])
&& !isIntOrGroup(_field)) {
int j = i - 1;
for (; j >= fString.fZero && isIntOrGroup(fString.getFieldPtr()[j]); j--) {}
cfpos.setState(
UFIELD_CATEGORY_NUMBER,
UNUM_INTEGER_FIELD,
j - fString.fZero + 1,
i - fString.fZero);
return true;
}
// Special case: coalesce NUMERIC if we are pointing at the end of the NUMERIC.
if (numericField != kUndefinedField
&& cfpos.matchesField(numericField.getCategory(), numericField.getField())
&& i > fString.fZero
// don't return the same field twice in a row:
&& (i - fString.fZero > cfpos.getLimit()
|| cfpos.getCategory() != numericField.getCategory()
|| cfpos.getField() != numericField.getField())
&& fString.getFieldPtr()[i - 1].isNumeric()
&& !_field.isNumeric()) {
int j = i - 1;
for (; j >= fString.fZero && fString.getFieldPtr()[j].isNumeric(); j--) {}
cfpos.setState(
numericField.getCategory(),
numericField.getField(),
j - fString.fZero + 1,
i - fString.fZero);
return true;
}
// Special case: skip over INTEGER; will be coalesced later.
if (_field == Field(UFIELD_CATEGORY_NUMBER, UNUM_INTEGER_FIELD)) {
_field = kUndefinedField;
}
// Case 2: no field starting at this position.
if (_field.isUndefined() || _field == kEndField) {
continue;
}
// Case 3: check for field starting at this position
if (cfpos.matchesField(_field.getCategory(), _field.getField())) {
fieldStart = i - fString.fZero;
currField = _field;
}
}
U_ASSERT(currField == kUndefinedField);
return false;
}
bool FormattedValueStringBuilderImpl::isIntOrGroup(Field field) {
return field == Field(UFIELD_CATEGORY_NUMBER, UNUM_INTEGER_FIELD)
|| field == Field(UFIELD_CATEGORY_NUMBER, UNUM_GROUPING_SEPARATOR_FIELD);
}
int32_t FormattedValueStringBuilderImpl::trimBack(int32_t limit) const {
return unisets::get(unisets::DEFAULT_IGNORABLES)->spanBack(
fString.getCharPtr() + fString.fZero,
limit,
USET_SPAN_CONTAINED);
}
int32_t FormattedValueStringBuilderImpl::trimFront(int32_t start) const {
return start + unisets::get(unisets::DEFAULT_IGNORABLES)->span(
fString.getCharPtr() + fString.fZero + start,
fString.fLength - start,
USET_SPAN_CONTAINED);
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
|
