1// © 2018 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#if !UCONFIG_NO_FORMATTING
7#ifndef __NUMPARSE_IMPL_H__
8#define __NUMPARSE_IMPL_H__
9
10#include "numparse_types.h"
11#include "numparse_decimal.h"
12#include "numparse_symbols.h"
13#include "numparse_scientific.h"
14#include "unicode/uniset.h"
15#include "numparse_currency.h"
16#include "numparse_affixes.h"
17#include "number_decimfmtprops.h"
18#include "unicode/localpointer.h"
19#include "numparse_validators.h"
20#include "number_multiplier.h"
21#include "string_segment.h"
22
23U_NAMESPACE_BEGIN
24
25// Export an explicit template instantiation of the MaybeStackArray that is used as a data member of NumberParserImpl.
26// When building DLLs for Windows this is required even though no direct access to the MaybeStackArray leaks out of the i18n library.
27// (See numparse_compositions.h, numparse_affixes.h, datefmt.h, and others for similar examples.)
28#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
29template class U_I18N_API MaybeStackArray<const numparse::impl::NumberParseMatcher*, 10>;
30#endif
31
32namespace numparse {
33namespace impl {
34
35// Exported as U_I18N_API for tests
36class U_I18N_API NumberParserImpl : public MutableMatcherCollection, public UMemory {
37 public:
38 virtual ~NumberParserImpl();
39
40 static NumberParserImpl* createSimpleParser(const Locale& locale, const UnicodeString& patternString,
41 parse_flags_t parseFlags, UErrorCode& status);
42
43 static NumberParserImpl* createParserFromProperties(
44 const number::impl::DecimalFormatProperties& properties, const DecimalFormatSymbols& symbols,
45 bool parseCurrency, UErrorCode& status);
46
47 /**
48 * Does NOT take ownership of the matcher. The matcher MUST remain valid for the lifespan of the
49 * NumberParserImpl.
50 * @param matcher The matcher to reference.
51 */
52 void addMatcher(NumberParseMatcher& matcher) override;
53
54 void freeze();
55
56 parse_flags_t getParseFlags() const;
57
58 void parse(const UnicodeString& input, bool greedy, ParsedNumber& result, UErrorCode& status) const;
59
60 void parse(const UnicodeString& input, int32_t start, bool greedy, ParsedNumber& result,
61 UErrorCode& status) const;
62
63 UnicodeString toString() const;
64
65 private:
66 parse_flags_t fParseFlags;
67 int32_t fNumMatchers = 0;
68 // NOTE: The stack capacity for fMatchers and fLeads should be the same
69 MaybeStackArray<const NumberParseMatcher*, 10> fMatchers;
70 bool fFrozen = false;
71
72 // WARNING: All of these matchers start in an undefined state (default-constructed).
73 // You must use an assignment operator on them before using.
74 struct {
75 IgnorablesMatcher ignorables;
76 InfinityMatcher infinity;
77 MinusSignMatcher minusSign;
78 NanMatcher nan;
79 PaddingMatcher padding;
80 PercentMatcher percent;
81 PermilleMatcher permille;
82 PlusSignMatcher plusSign;
83 DecimalMatcher decimal;
84 ScientificMatcher scientific;
85 CombinedCurrencyMatcher currency;
86 AffixMatcherWarehouse affixMatcherWarehouse;
87 AffixTokenMatcherWarehouse affixTokenMatcherWarehouse;
88 } fLocalMatchers;
89 struct {
90 RequireAffixValidator affix;
91 RequireCurrencyValidator currency;
92 RequireDecimalSeparatorValidator decimalSeparator;
93 RequireNumberValidator number;
94 MultiplierParseHandler multiplier;
95 } fLocalValidators;
96
97 explicit NumberParserImpl(parse_flags_t parseFlags);
98
99 void parseGreedy(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const;
100
101 void parseLongestRecursive(
102 StringSegment& segment, ParsedNumber& result, int32_t recursionLevels, UErrorCode& status) const;
103};
104
105
106} // namespace impl
107} // namespace numparse
108U_NAMESPACE_END
109
110#endif //__NUMPARSE_IMPL_H__
111#endif /* #if !UCONFIG_NO_FORMATTING */
112