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Diffstat (limited to 'intl/icu/source/i18n/dtptngen_impl.h')
| -rw-r--r-- | intl/icu/source/i18n/dtptngen_impl.h | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/dtptngen_impl.h b/intl/icu/source/i18n/dtptngen_impl.h new file mode 100644 index 0000000000..ade9f57331 --- /dev/null +++ b/intl/icu/source/i18n/dtptngen_impl.h @@ -0,0 +1,310 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* Copyright (C) 2007-2016, International Business Machines Corporation and +* others. All Rights Reserved. +******************************************************************************* +* +* File DTPTNGEN.H +* +******************************************************************************* +*/ + +#ifndef __DTPTNGEN_IMPL_H__ +#define __DTPTNGEN_IMPL_H__ + +#include "unicode/udatpg.h" + +#include "unicode/strenum.h" +#include "unicode/unistr.h" +#include "uvector.h" + +// TODO(claireho): Split off Builder class. +// TODO(claireho): If splitting off Builder class: As subclass or independent? + +#define MAX_PATTERN_ENTRIES 52 +#define MAX_CLDR_FIELD_LEN 60 +#define MAX_DT_TOKEN 50 +#define MAX_RESOURCE_FIELD 12 +#define MAX_AVAILABLE_FORMATS 12 +#define NONE 0 +#define EXTRA_FIELD 0x10000 +#define MISSING_FIELD 0x1000 +#define MAX_STRING_ENUMERATION 200 +#define SINGLE_QUOTE ((UChar)0x0027) +#define FORWARDSLASH ((UChar)0x002F) +#define BACKSLASH ((UChar)0x005C) +#define SPACE ((UChar)0x0020) +#define QUOTATION_MARK ((UChar)0x0022) +#define ASTERISK ((UChar)0x002A) +#define PLUSSITN ((UChar)0x002B) +#define COMMA ((UChar)0x002C) +#define HYPHEN ((UChar)0x002D) +#define DOT ((UChar)0x002E) +#define COLON ((UChar)0x003A) +#define CAP_A ((UChar)0x0041) +#define CAP_B ((UChar)0x0042) +#define CAP_C ((UChar)0x0043) +#define CAP_D ((UChar)0x0044) +#define CAP_E ((UChar)0x0045) +#define CAP_F ((UChar)0x0046) +#define CAP_G ((UChar)0x0047) +#define CAP_H ((UChar)0x0048) +#define CAP_J ((UChar)0x004A) +#define CAP_K ((UChar)0x004B) +#define CAP_L ((UChar)0x004C) +#define CAP_M ((UChar)0x004D) +#define CAP_O ((UChar)0x004F) +#define CAP_Q ((UChar)0x0051) +#define CAP_S ((UChar)0x0053) +#define CAP_T ((UChar)0x0054) +#define CAP_U ((UChar)0x0055) +#define CAP_V ((UChar)0x0056) +#define CAP_W ((UChar)0x0057) +#define CAP_X ((UChar)0x0058) +#define CAP_Y ((UChar)0x0059) +#define CAP_Z ((UChar)0x005A) +#define LOWLINE ((UChar)0x005F) +#define LOW_A ((UChar)0x0061) +#define LOW_B ((UChar)0x0062) +#define LOW_C ((UChar)0x0063) +#define LOW_D ((UChar)0x0064) +#define LOW_E ((UChar)0x0065) +#define LOW_F ((UChar)0x0066) +#define LOW_G ((UChar)0x0067) +#define LOW_H ((UChar)0x0068) +#define LOW_I ((UChar)0x0069) +#define LOW_J ((UChar)0x006A) +#define LOW_K ((UChar)0x006B) +#define LOW_L ((UChar)0x006C) +#define LOW_M ((UChar)0x006D) +#define LOW_N ((UChar)0x006E) +#define LOW_O ((UChar)0x006F) +#define LOW_P ((UChar)0x0070) +#define LOW_Q ((UChar)0x0071) +#define LOW_R ((UChar)0x0072) +#define LOW_S ((UChar)0x0073) +#define LOW_T ((UChar)0x0074) +#define LOW_U ((UChar)0x0075) +#define LOW_V ((UChar)0x0076) +#define LOW_W ((UChar)0x0077) +#define LOW_X ((UChar)0x0078) +#define LOW_Y ((UChar)0x0079) +#define LOW_Z ((UChar)0x007A) +#define DT_NARROW -0x101 +#define DT_SHORTER -0x102 +#define DT_SHORT -0x103 +#define DT_LONG -0x104 +#define DT_NUMERIC 0x100 +#define DT_DELTA 0x10 + +U_NAMESPACE_BEGIN + +const int32_t UDATPG_FRACTIONAL_MASK = 1<<UDATPG_FRACTIONAL_SECOND_FIELD; +const int32_t UDATPG_SECOND_AND_FRACTIONAL_MASK = (1<<UDATPG_SECOND_FIELD) | (1<<UDATPG_FRACTIONAL_SECOND_FIELD); + +typedef enum dtStrEnum { + DT_BASESKELETON, + DT_SKELETON, + DT_PATTERN +}dtStrEnum; + +typedef struct dtTypeElem { + UChar patternChar; + UDateTimePatternField field; + int16_t type; + int16_t minLen; + int16_t weight; +} dtTypeElem; + +// A compact storage mechanism for skeleton field strings. Several dozen of these will be created +// for a typical DateTimePatternGenerator instance. +class SkeletonFields : public UMemory { +public: + SkeletonFields(); + void clear(); + void copyFrom(const SkeletonFields& other); + void clearField(int32_t field); + UChar getFieldChar(int32_t field) const; + int32_t getFieldLength(int32_t field) const; + void populate(int32_t field, const UnicodeString& value); + void populate(int32_t field, UChar repeatChar, int32_t repeatCount); + UBool isFieldEmpty(int32_t field) const; + UnicodeString& appendTo(UnicodeString& string) const; + UnicodeString& appendFieldTo(int32_t field, UnicodeString& string) const; + UChar getFirstChar() const; + inline UBool operator==(const SkeletonFields& other) const; + inline UBool operator!=(const SkeletonFields& other) const; + +private: + int8_t chars[UDATPG_FIELD_COUNT]; + int8_t lengths[UDATPG_FIELD_COUNT]; +}; + +inline UBool SkeletonFields::operator==(const SkeletonFields& other) const { + return (uprv_memcmp(chars, other.chars, sizeof(chars)) == 0 + && uprv_memcmp(lengths, other.lengths, sizeof(lengths)) == 0); +} + +inline UBool SkeletonFields::operator!=(const SkeletonFields& other) const { + return (! operator==(other)); +} + +class PtnSkeleton : public UMemory { +public: + int32_t type[UDATPG_FIELD_COUNT]; + SkeletonFields original; + SkeletonFields baseOriginal; + UBool addedDefaultDayPeriod; + + PtnSkeleton(); + PtnSkeleton(const PtnSkeleton& other); + void copyFrom(const PtnSkeleton& other); + void clear(); + UBool equals(const PtnSkeleton& other) const; + UnicodeString getSkeleton() const; + UnicodeString getBaseSkeleton() const; + UChar getFirstChar() const; + + // TODO: Why is this virtual, as well as the other destructors in this file? We don't want + // vtables when we don't use class objects polymorphically. + virtual ~PtnSkeleton(); +}; + +class PtnElem : public UMemory { +public: + UnicodeString basePattern; + LocalPointer<PtnSkeleton> skeleton; + UnicodeString pattern; + UBool skeletonWasSpecified; // if specified in availableFormats, not derived + LocalPointer<PtnElem> next; + + PtnElem(const UnicodeString &basePattern, const UnicodeString &pattern); + virtual ~PtnElem(); +}; + +class FormatParser : public UMemory { +public: + UnicodeString items[MAX_DT_TOKEN]; + int32_t itemNumber; + + FormatParser(); + virtual ~FormatParser(); + void set(const UnicodeString& patternString); + void getQuoteLiteral(UnicodeString& quote, int32_t *itemIndex); + UBool isPatternSeparator(const UnicodeString& field) const; + static UBool isQuoteLiteral(const UnicodeString& s); + static int32_t getCanonicalIndex(const UnicodeString& s) { return getCanonicalIndex(s, TRUE); } + static int32_t getCanonicalIndex(const UnicodeString& s, UBool strict); + +private: + typedef enum TokenStatus { + START, + ADD_TOKEN, + SYNTAX_ERROR, + DONE + } TokenStatus; + + TokenStatus status; + virtual TokenStatus setTokens(const UnicodeString& pattern, int32_t startPos, int32_t *len); +}; + +class DistanceInfo : public UMemory { +public: + int32_t missingFieldMask; + int32_t extraFieldMask; + + DistanceInfo() {} + virtual ~DistanceInfo(); + void clear() { missingFieldMask = extraFieldMask = 0; } + void setTo(const DistanceInfo& other); + void addMissing(int32_t field) { missingFieldMask |= (1<<field); } + void addExtra(int32_t field) { extraFieldMask |= (1<<field); } +}; + +class DateTimeMatcher: public UMemory { +public: + PtnSkeleton skeleton; + + void getBasePattern(UnicodeString& basePattern); + UnicodeString getPattern(); + void set(const UnicodeString& pattern, FormatParser* fp); + void set(const UnicodeString& pattern, FormatParser* fp, PtnSkeleton& skeleton); + void copyFrom(const PtnSkeleton& skeleton); + void copyFrom(); + PtnSkeleton* getSkeletonPtr(); + UBool equals(const DateTimeMatcher* other) const; + int32_t getDistance(const DateTimeMatcher& other, int32_t includeMask, DistanceInfo& distanceInfo) const; + DateTimeMatcher(); + DateTimeMatcher(const DateTimeMatcher& other); + DateTimeMatcher& operator=(const DateTimeMatcher& other); + virtual ~DateTimeMatcher(); + int32_t getFieldMask() const; +}; + +class PatternMap : public UMemory { +public: + PtnElem *boot[MAX_PATTERN_ENTRIES]; + PatternMap(); + virtual ~PatternMap(); + void add(const UnicodeString& basePattern, const PtnSkeleton& skeleton, const UnicodeString& value, UBool skeletonWasSpecified, UErrorCode& status); + const UnicodeString* getPatternFromBasePattern(const UnicodeString& basePattern, UBool& skeletonWasSpecified) const; + const UnicodeString* getPatternFromSkeleton(const PtnSkeleton& skeleton, const PtnSkeleton** specifiedSkeletonPtr = 0) const; + void copyFrom(const PatternMap& other, UErrorCode& status); + PtnElem* getHeader(UChar baseChar) const; + UBool equals(const PatternMap& other) const; +private: + UBool isDupAllowed; + PtnElem* getDuplicateElem(const UnicodeString& basePattern, const PtnSkeleton& skeleton, PtnElem *baseElem); +}; // end PatternMap + +class PatternMapIterator : public UMemory { +public: + PatternMapIterator(UErrorCode &status); + virtual ~PatternMapIterator(); + void set(PatternMap& patternMap); + PtnSkeleton* getSkeleton() const; + UBool hasNext() const; + DateTimeMatcher& next(); +private: + int32_t bootIndex; + PtnElem *nodePtr; + LocalPointer<DateTimeMatcher> matcher; + PatternMap *patternMap; +}; + +class DTSkeletonEnumeration : public StringEnumeration { +public: + DTSkeletonEnumeration(PatternMap& patternMap, dtStrEnum type, UErrorCode& status); + virtual ~DTSkeletonEnumeration(); + static UClassID U_EXPORT2 getStaticClassID(void); + virtual UClassID getDynamicClassID(void) const; + virtual const UnicodeString* snext(UErrorCode& status); + virtual void reset(UErrorCode& status); + virtual int32_t count(UErrorCode& status) const; +private: + int32_t pos; + UBool isCanonicalItem(const UnicodeString& item); + LocalPointer<UVector> fSkeletons; +}; + +class DTRedundantEnumeration : public StringEnumeration { +public: + DTRedundantEnumeration(); + virtual ~DTRedundantEnumeration(); + static UClassID U_EXPORT2 getStaticClassID(void); + virtual UClassID getDynamicClassID(void) const; + virtual const UnicodeString* snext(UErrorCode& status); + virtual void reset(UErrorCode& status); + virtual int32_t count(UErrorCode& status) const; + void add(const UnicodeString &pattern, UErrorCode& status); +private: + int32_t pos; + UBool isCanonicalItem(const UnicodeString& item) const; + LocalPointer<UVector> fPatterns; +}; + +U_NAMESPACE_END + +#endif |