Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 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_SYMBOLS_H__ |
| 8 | #define __NUMPARSE_SYMBOLS_H__ |
| 9 | |
| 10 | #include "numparse_types.h" |
| 11 | #include "unicode/uniset.h" |
| 12 | #include "static_unicode_sets.h" |
| 13 | |
| 14 | U_NAMESPACE_BEGIN namespace numparse { |
| 15 | namespace impl { |
| 16 | |
| 17 | |
| 18 | /** |
| 19 | * A base class for many matchers that performs a simple match against a UnicodeString and/or UnicodeSet. |
| 20 | * |
| 21 | * @author sffc |
| 22 | */ |
| 23 | // Exported as U_I18N_API for tests |
| 24 | class U_I18N_API SymbolMatcher : public NumberParseMatcher, public UMemory { |
| 25 | public: |
| 26 | SymbolMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 27 | |
| 28 | const UnicodeSet* getSet() const; |
| 29 | |
| 30 | bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override; |
| 31 | |
| 32 | bool smokeTest(const StringSegment& segment) const override; |
| 33 | |
| 34 | UnicodeString toString() const override; |
| 35 | |
| 36 | virtual bool isDisabled(const ParsedNumber& result) const = 0; |
| 37 | |
| 38 | virtual void accept(StringSegment& segment, ParsedNumber& result) const = 0; |
| 39 | |
| 40 | protected: |
| 41 | UnicodeString fString; |
| 42 | const UnicodeSet* fUniSet; // a reference from numparse_unisets.h; never owned |
| 43 | |
| 44 | SymbolMatcher(const UnicodeString& symbolString, unisets::Key key); |
| 45 | }; |
| 46 | |
| 47 | |
| 48 | // Exported as U_I18N_API for tests |
| 49 | class U_I18N_API IgnorablesMatcher : public SymbolMatcher { |
| 50 | public: |
| 51 | IgnorablesMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 52 | |
| 53 | IgnorablesMatcher(parse_flags_t parseFlags); |
| 54 | |
| 55 | bool isFlexible() const override; |
| 56 | |
| 57 | UnicodeString toString() const override; |
| 58 | |
| 59 | protected: |
| 60 | bool isDisabled(const ParsedNumber& result) const override; |
| 61 | |
| 62 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 63 | }; |
| 64 | |
| 65 | |
| 66 | class InfinityMatcher : public SymbolMatcher { |
| 67 | public: |
| 68 | InfinityMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 69 | |
| 70 | InfinityMatcher(const DecimalFormatSymbols& dfs); |
| 71 | |
| 72 | protected: |
| 73 | bool isDisabled(const ParsedNumber& result) const override; |
| 74 | |
| 75 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 76 | }; |
| 77 | |
| 78 | |
| 79 | // Exported as U_I18N_API for tests |
| 80 | class U_I18N_API MinusSignMatcher : public SymbolMatcher { |
| 81 | public: |
| 82 | MinusSignMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 83 | |
| 84 | MinusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing); |
| 85 | |
| 86 | protected: |
| 87 | bool isDisabled(const ParsedNumber& result) const override; |
| 88 | |
| 89 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 90 | |
| 91 | private: |
| 92 | bool fAllowTrailing; |
| 93 | }; |
| 94 | |
| 95 | |
| 96 | class NanMatcher : public SymbolMatcher { |
| 97 | public: |
| 98 | NanMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 99 | |
| 100 | NanMatcher(const DecimalFormatSymbols& dfs); |
| 101 | |
| 102 | protected: |
| 103 | bool isDisabled(const ParsedNumber& result) const override; |
| 104 | |
| 105 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 106 | }; |
| 107 | |
| 108 | |
| 109 | class PaddingMatcher : public SymbolMatcher { |
| 110 | public: |
| 111 | PaddingMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 112 | |
| 113 | PaddingMatcher(const UnicodeString& padString); |
| 114 | |
| 115 | bool isFlexible() const override; |
| 116 | |
| 117 | protected: |
| 118 | bool isDisabled(const ParsedNumber& result) const override; |
| 119 | |
| 120 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 121 | }; |
| 122 | |
| 123 | |
| 124 | // Exported as U_I18N_API for tests |
| 125 | class U_I18N_API PercentMatcher : public SymbolMatcher { |
| 126 | public: |
| 127 | PercentMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 128 | |
| 129 | PercentMatcher(const DecimalFormatSymbols& dfs); |
| 130 | |
| 131 | protected: |
| 132 | bool isDisabled(const ParsedNumber& result) const override; |
| 133 | |
| 134 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 135 | }; |
| 136 | |
| 137 | // Exported as U_I18N_API for tests |
| 138 | class U_I18N_API PermilleMatcher : public SymbolMatcher { |
| 139 | public: |
| 140 | PermilleMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 141 | |
| 142 | PermilleMatcher(const DecimalFormatSymbols& dfs); |
| 143 | |
| 144 | protected: |
| 145 | bool isDisabled(const ParsedNumber& result) const override; |
| 146 | |
| 147 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 148 | }; |
| 149 | |
| 150 | |
| 151 | // Exported as U_I18N_API for tests |
| 152 | class U_I18N_API PlusSignMatcher : public SymbolMatcher { |
| 153 | public: |
| 154 | PlusSignMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 155 | |
| 156 | PlusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing); |
| 157 | |
| 158 | protected: |
| 159 | bool isDisabled(const ParsedNumber& result) const override; |
| 160 | |
| 161 | void accept(StringSegment& segment, ParsedNumber& result) const override; |
| 162 | |
| 163 | private: |
| 164 | bool fAllowTrailing; |
| 165 | }; |
| 166 | |
| 167 | |
| 168 | } // namespace impl |
| 169 | } // namespace numparse |
| 170 | U_NAMESPACE_END |
| 171 | |
| 172 | #endif //__NUMPARSE_SYMBOLS_H__ |
| 173 | #endif /* #if !UCONFIG_NO_FORMATTING */ |