Java Code Examples for com.ibm.icu.text.UTF16#getLeadSurrogate()

The following examples show how to use com.ibm.icu.text.UTF16#getLeadSurrogate() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TrieIterator.java    From fitnotifications with Apache License 2.0 6 votes vote down vote up 
/**
* Checks if we are beginning at the start of a initial block.
* If we are then the rest of the codepoints in this initial block
* has the same values.
* We increment m_nextCodepoint_ and relevant data members if so.
* This is used only in for the supplementary codepoints because
* the offset to the trail indexes could be 0.
* @return true if we are at the start of a initial block.
*/
private final boolean checkNullNextTrailIndex()
{
    if (m_nextIndex_ <= 0) {
        m_nextCodepoint_ += TRAIL_SURROGATE_COUNT_ - 1;
        int nextLead  = UTF16.getLeadSurrogate(m_nextCodepoint_);
        int leadBlock =
               m_trie_.m_index_[nextLead >> Trie.INDEX_STAGE_1_SHIFT_] <<
                                               Trie.INDEX_STAGE_2_SHIFT_;
        if (m_trie_.m_dataManipulate_ == null) {
            throw new NullPointerException(
                        "The field DataManipulate in this Trie is null");
        }
        m_nextIndex_ = m_trie_.m_dataManipulate_.getFoldingOffset(
                           m_trie_.getValue(leadBlock +
                               (nextLead & Trie.INDEX_STAGE_3_MASK_)));
        m_nextIndex_ --;
        m_nextBlockIndex_ =  DATA_BLOCK_LENGTH_;
        return true;
    }
    return false;
}
Example 2
Source File: TrieIterator.java    From trekarta with GNU General Public License v3.0 6 votes vote down vote up 
/**
* Checks if we are beginning at the start of a initial block.
* If we are then the rest of the codepoints in this initial block
* has the same values.
* We increment m_nextCodepoint_ and relevant data members if so.
* This is used only in for the supplementary codepoints because
* the offset to the trail indexes could be 0.
* @return true if we are at the start of a initial block.
*/
private final boolean checkNullNextTrailIndex()
{
    if (m_nextIndex_ <= 0) {
        m_nextCodepoint_ += TRAIL_SURROGATE_COUNT_ - 1;
        int nextLead  = UTF16.getLeadSurrogate(m_nextCodepoint_);
        int leadBlock =
               m_trie_.m_index_[nextLead >> Trie.INDEX_STAGE_1_SHIFT_] <<
                                               Trie.INDEX_STAGE_2_SHIFT_;
        if (m_trie_.m_dataManipulate_ == null) {
            throw new NullPointerException(
                        "The field DataManipulate in this Trie is null");
        }
        m_nextIndex_ = m_trie_.m_dataManipulate_.getFoldingOffset(
                           m_trie_.getValue(leadBlock +
                               (nextLead & Trie.INDEX_STAGE_3_MASK_)));
        m_nextIndex_ --;
        m_nextBlockIndex_ =  DATA_BLOCK_LENGTH_;
        return true;
    }
    return false;
}
Example 3
Source File: CollationFCD.java    From fitnotifications with Apache License 2.0 5 votes vote down vote up 
static boolean mayHaveLccc(int c) {
    // Handles all of Unicode 0..10FFFF.
    // c can be negative, e.g., Collation.SENTINEL_CP.
    // U+0300 is the first character with lccc!=0.
    if(c < 0x300) { return false; }
    if(c > 0xffff) { c = UTF16.getLeadSurrogate(c); }
    int i;
    return
        (i = lcccIndex[c >> 5]) != 0 &&
        (lcccBits[i] & (1 << (c & 0x1f))) != 0;
}