Mass Deface
=kMinValueLead);
return leadUnit&kValueIsFinal ?
readValue(pos, leadUnit&0x7fff) : readNodeValue(pos, leadUnit);
}
/**
* Determines whether all strings reachable from the current state
* map to the same value.
* @param uniqueValue Receives the unique value, if this function returns TRUE.
* (output-only)
* @return TRUE if all strings reachable from the current state
* map to the same value.
* @stable ICU 4.8
*/
inline UBool hasUniqueValue(int32_t &uniqueValue) const {
const UChar *pos=pos_;
// Skip the rest of a pending linear-match node.
return pos!=NULL && findUniqueValue(pos+remainingMatchLength_+1, FALSE, uniqueValue);
}
/**
* Finds each UChar which continues the string from the current state.
* That is, each UChar c for which it would be next(c)!=USTRINGTRIE_NO_MATCH now.
* @param out Each next UChar is appended to this object.
* @return the number of UChars which continue the string from here
* @stable ICU 4.8
*/
int32_t getNextUChars(Appendable &out) const;
/**
* Iterator for all of the (string, value) pairs in a UCharsTrie.
* @stable ICU 4.8
*/
class U_COMMON_API Iterator : public UMemory {
public:
/**
* Iterates from the root of a UChar-serialized UCharsTrie.
* @param trieUChars The trie UChars.
* @param maxStringLength If 0, the iterator returns full strings.
* Otherwise, the iterator returns strings with this maximum length.
* @param errorCode Standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @stable ICU 4.8
*/
Iterator(const UChar *trieUChars, int32_t maxStringLength, UErrorCode &errorCode);
/**
* Iterates from the current state of the specified UCharsTrie.
* @param trie The trie whose state will be copied for iteration.
* @param maxStringLength If 0, the iterator returns full strings.
* Otherwise, the iterator returns strings with this maximum length.
* @param errorCode Standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @stable ICU 4.8
*/
Iterator(const UCharsTrie &trie, int32_t maxStringLength, UErrorCode &errorCode);
/**
* Destructor.
* @stable ICU 4.8
*/
~Iterator();
/**
* Resets this iterator to its initial state.
* @return *this
* @stable ICU 4.8
*/
Iterator &reset();
/**
* @return TRUE if there are more elements.
* @stable ICU 4.8
*/
UBool hasNext() const;
/**
* Finds the next (string, value) pair if there is one.
*
* If the string is truncated to the maximum length and does not
* have a real value, then the value is set to -1.
* In this case, this "not a real value" is indistinguishable from
* a real value of -1.
* @param errorCode Standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @return TRUE if there is another element.
* @stable ICU 4.8
*/
UBool next(UErrorCode &errorCode);
/**
* @return The string for the last successful next().
* @stable ICU 4.8
*/
const UnicodeString &getString() const { return str_; }
/**
* @return The value for the last successful next().
* @stable ICU 4.8
*/
int32_t getValue() const { return value_; }
private:
UBool truncateAndStop() {
pos_=NULL;
value_=-1; // no real value for str
return TRUE;
}
const UChar *branchNext(const UChar *pos, int32_t length, UErrorCode &errorCode);
const UChar *uchars_;
const UChar *pos_;
const UChar *initialPos_;
int32_t remainingMatchLength_;
int32_t initialRemainingMatchLength_;
UBool skipValue_; // Skip intermediate value which was already delivered.
UnicodeString str_;
int32_t maxLength_;
int32_t value_;
// The stack stores pairs of integers for backtracking to another
// outbound edge of a branch node.
// The first integer is an offset from uchars_.
// The second integer has the str_.length() from before the node in bits 15..0,
// and the remaining branch length in bits 31..16.
// (We could store the remaining branch length minus 1 in bits 30..16 and not use the sign bit,
// but the code looks more confusing that way.)
UVector32 *stack_;
};
private:
friend class UCharsTrieBuilder;
/**
* Constructs a UCharsTrie reader instance.
* Unlike the public constructor which just aliases an array,
* this constructor adopts the builder's array.
* This constructor is only called by the builder.
*/
UCharsTrie(UChar *adoptUChars, const UChar *trieUChars)
: ownedArray_(adoptUChars), uchars_(trieUChars),
pos_(uchars_), remainingMatchLength_(-1) {}
// No assignment operator.
UCharsTrie &operator=(const UCharsTrie &other);
inline void stop() {
pos_=NULL;
}
// Reads a compact 32-bit integer.
// pos is already after the leadUnit, and the lead unit has bit 15 reset.
static inline int32_t readValue(const UChar *pos, int32_t leadUnit) {
int32_t value;
if(leadUnit