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2 // License & terms of use: http://www.unicode.org/copyright.html

3 /*

4 *******************************************************************************

7 *******************************************************************************

8 * file name: ucharstriebuilder.h

9 * encoding: UTF-8

10 * tab size: 8 (not used)

11 * indentation:4

12 *

13 * created on: 2010nov14

14 * created by: Markus W. Scherer

15 */

17 #ifndef __UCHARSTRIEBUILDER_H__

18 #define __UCHARSTRIEBUILDER_H__

20 #include "unicode/utypes.h"

22 #if U_SHOW_CPLUSPLUS_API

24 #include "unicode/stringtriebuilder.h"

25 #include "unicode/ucharstrie.h"

26 #include "unicode/unistr.h"

33 U_NAMESPACE_BEGIN

35 classUCharsTrieElement;

43 classU_COMMON_API UCharsTrieBuilder :public StringTrieBuilder {

44 public:

50 UCharsTrieBuilder(UErrorCode &errorCode);

56 virtual~UCharsTrieBuilder();

72 UCharsTrieBuilder &add(constUnicodeString &s, int32_t value,UErrorCode &errorCode);

92 UCharsTrie *build(UStringTrieBuildOption buildOption,UErrorCode &errorCode);

119 UnicodeString &buildUnicodeString(UStringTrieBuildOption buildOption,UnicodeString &result,

120 UErrorCode &errorCode);

121

128 UCharsTrieBuilder &clear() {

129 strings.remove();

130 elementsLength=0;

131 ucharsLength=0;

132 return *this;

133 }

134

135 private:

136 UCharsTrieBuilder(constUCharsTrieBuilder &other) =delete;// no copy constructor

137 UCharsTrieBuilder &operator=(constUCharsTrieBuilder &other) =delete;// no assignment operator

138

139 void buildUChars(UStringTrieBuildOption buildOption,UErrorCode &errorCode);

140

141 virtual int32_t getElementStringLength(int32_t i)const override;

142 virtual char16_t getElementUnit(int32_t i, int32_t unitIndex)const override;

143 virtual int32_t getElementValue(int32_t i)const override;

144

145 virtual int32_t getLimitOfLinearMatch(int32_t first, int32_t last, int32_t unitIndex)const override;

146

147 virtual int32_t countElementUnits(int32_t start, int32_t limit, int32_t unitIndex)const override;

148 virtual int32_t skipElementsBySomeUnits(int32_t i, int32_t unitIndex, int32_t count)const override;

149 virtual int32_t indexOfElementWithNextUnit(int32_t i, int32_t unitIndex, char16_t unit)const override;

150

151 virtualUBool matchNodesCanHaveValues() const override{returntrue; }

152

153 virtual int32_t getMaxBranchLinearSubNodeLength() const override{return UCharsTrie::kMaxBranchLinearSubNodeLength; }

154 virtual int32_t getMinLinearMatch() const override{return UCharsTrie::kMinLinearMatch; }

155 virtual int32_t getMaxLinearMatchLength() const override{return UCharsTrie::kMaxLinearMatchLength; }

156

157 classUCTLinearMatchNode :public LinearMatchNode {

158 public:

159 UCTLinearMatchNode(const char16_t *units, int32_t len, Node *nextNode);

160 virtualbooloperator==(const Node &other)const override;

161 virtualvoid write(StringTrieBuilder &builder)override;

162 private:

163 const char16_t *s;

164 };

165

166 virtual Node *createLinearMatchNode(int32_t i, int32_t unitIndex, int32_t length,

167 Node *nextNode)const override;

168

169 UBool ensureCapacity(int32_t length);

170 virtual int32_t write(int32_t unit)override;

171 int32_t write(const char16_t *s, int32_t length);

172 virtual int32_t writeElementUnits(int32_t i, int32_t unitIndex, int32_t length)override;

173 virtual int32_t writeValueAndFinal(int32_t i,UBool isFinal)override;

174 virtual int32_t writeValueAndType(UBool hasValue, int32_t value, int32_t node)override;

175 virtual int32_t writeDeltaTo(int32_t jumpTarget)override;

176

177 UnicodeString strings;

178 UCharsTrieElement *elements;

179 int32_t elementsCapacity;

180 int32_t elementsLength;

181

182 // char16_t serialization of the trie.

183 // Grows from the back: ucharsLength measures from the end of the buffer!

184 char16_t *uchars;

185 int32_t ucharsCapacity;

186 int32_t ucharsLength;

187 };

188

189 U_NAMESPACE_END

190

191 #endif/* U_SHOW_CPLUSPLUS_API */

192

193 #endif// __UCHARSTRIEBUILDER_H__

icu::UCharsTrieBuilder

Builder class for UCharsTrie.

Definition:ucharstriebuilder.h:43

icu::UCharsTrieBuilder::build

UCharsTrie * build(UStringTrieBuildOption buildOption, UErrorCode &errorCode)

Builds a UCharsTrie for the add()ed data.

icu::UCharsTrieBuilder::~UCharsTrieBuilder

virtual ~UCharsTrieBuilder()

Destructor.

icu::UCharsTrieBuilder::buildUnicodeString

UnicodeString & buildUnicodeString(UStringTrieBuildOption buildOption, UnicodeString &result, UErrorCode &errorCode)

Builds a UCharsTrie for the add()ed data and char16_t-serializes it.

icu::UCharsTrieBuilder::UCharsTrieBuilder

UCharsTrieBuilder(UErrorCode &errorCode)

Constructs an empty builder.

icu::UCharsTrieBuilder::clear

UCharsTrieBuilder & clear()

Removes all (string, value) pairs.

Definition:ucharstriebuilder.h:128

icu::UCharsTrieBuilder::add

UCharsTrieBuilder & add(const UnicodeString &s, int32_t value, UErrorCode &errorCode)

Adds a (string, value) pair.

icu::UCharsTrie

Light-weight, non-const reader class for a UCharsTrie.

Definition:ucharstrie.h:53

icu::UnicodeString

UnicodeString is a string class that stores Unicode characters directly and provides similar function...

Definition:unistr.h:303

icu::operator==

U_COMMON_API UBool operator==(const StringPiece &x, const StringPiece &y)

Global operator == for StringPiece.

stringtriebuilder.h

C++ API: Builder API for trie builders.

UStringTrieBuildOption

Build options for BytesTrieBuilder and CharsTrieBuilder.

Definition:stringtriebuilder.h:41

ucharstrie.h

C++ API: Trie for mapping Unicode strings (or 16-bit-unit sequences) to integer values.

UBool

int8_t UBool

The ICU boolean type, a signed-byte integer.

Definition:umachine.h:269

unistr.h

C++ API: Unicode String.

utypes.h

Basic definitions for ICU, for both C and C++ APIs.

UErrorCode

Standard ICU4C error code type, a substitute for exceptions.

Definition:utypes.h:509

U_COMMON_API

#define U_COMMON_API

Set to export library symbols from inside the common library, and to import them from outside.

Definition:utypes.h:315