Package com.ibm.icu.impl

Class Normalizer2Impl

  • public final class Normalizer2Impl
extends Object

    • Constructor Detail

      • Normalizer2Impl

        public Normalizer2Impl()

    • Method Detail

      • addLcccChars

        public void addLcccChars​(UnicodeSet set)

      • addPropertyStarts

        public void addPropertyStarts​(UnicodeSet set)

      • addCanonIterPropertyStarts

        public void addCanonIterPropertyStarts​(UnicodeSet set)

      • getNormTrie

        public Trie2_16 getNormTrie()

      • getNorm16

        public int getNorm16​(int c)

      • getCompQuickCheck

        public int getCompQuickCheck​(int norm16)

      • isAlgorithmicNoNo

        public boolean isAlgorithmicNoNo​(int norm16)

      • isCompNo

        public boolean isCompNo​(int norm16)

      • isDecompYes

        public boolean isDecompYes​(int norm16)

      • getCC

        public int getCC​(int norm16)

      • getCCFromYesOrMaybe

        public static int getCCFromYesOrMaybe​(int norm16)

      • getFCD16

        public int getFCD16​(int c)
        Returns the FCD data for code point c.
        Parameters:
        c - A Unicode code point.
        Returns:
        The lccc(c) in bits 15..8 and tccc(c) in bits 7..0.

      • getFCD16FromBelow180

        public int getFCD16FromBelow180​(int c)
        Returns the FCD data for U+0000<=c

      • singleLeadMightHaveNonZeroFCD16

        public boolean singleLeadMightHaveNonZeroFCD16​(int lead)
        Returns true if the single-or-lead code unit c might have non-zero FCD data.

      • getFCD16FromNormData

        public int getFCD16FromNormData​(int c)
        Gets the FCD value from the regular normalization data.

      • getDecomposition

        public String getDecomposition​(int c)
        Gets the decomposition for one code point.
        Parameters:
        c - code point
        Returns:
        c's decomposition, if it has one; returns null if it does not have a decomposition

      • getRawDecomposition

        public String getRawDecomposition​(int c)
        Gets the raw decomposition for one code point.
        Parameters:
        c - code point
        Returns:
        c's raw decomposition, if it has one; returns null if it does not have a decomposition

      • isCanonSegmentStarter

        public boolean isCanonSegmentStarter​(int c)
        Returns true if code point c starts a canonical-iterator string segment. ensureCanonIterData() must have been called before this method, or else this method will crash.
        Parameters:
        c - A Unicode code point.
        Returns:
        true if c starts a canonical-iterator string segment.

      • getCanonStartSet

        public boolean getCanonStartSet​(int c,
                                UnicodeSet set)
        Returns true if there are characters whose decomposition starts with c. If so, then the set is cleared and then filled with those characters. ensureCanonIterData() must have been called before this method, or else this method will crash.
        Parameters:
        c - A Unicode code point.
        set - A UnicodeSet to receive the characters whose decompositions start with c, if there are any.
        Returns:
        true if there are characters whose decomposition starts with c.

      • decompose

        public void decompose​(CharSequence s,
                      int src,
                      int limit,
                      StringBuilder dest,
                      int destLengthEstimate)
        Decomposes s[src, limit[ and writes the result to dest. limit can be NULL if src is NUL-terminated. destLengthEstimate is the initial dest buffer capacity and can be -1.

      • composeQuickCheck

        public int composeQuickCheck​(CharSequence s,
                             int src,
                             int limit,
                             boolean onlyContiguous,
                             boolean doSpan)
        Very similar to compose(): Make the same changes in both places if relevant. doSpan: spanQuickCheckYes (ignore bit 0 of the return value) !doSpan: quickCheck
        Returns:
        bits 31..1: spanQuickCheckYes (==s.length() if "yes") and bit 0: set if "maybe"; otherwise, if the span length<s.length() then the quick check result is "no"

      • hasDecompBoundary

        public boolean hasDecompBoundary​(int c,
                                 boolean before)

      • isDecompInert

        public boolean isDecompInert​(int c)

      • hasCompBoundaryBefore

        public boolean hasCompBoundaryBefore​(int c)

      • hasCompBoundaryAfter

        public boolean hasCompBoundaryAfter​(int c,
                                    boolean onlyContiguous,
                                    boolean testInert)

      • hasFCDBoundaryBefore

        public boolean hasFCDBoundaryBefore​(int c)

      • hasFCDBoundaryAfter

        public boolean hasFCDBoundaryAfter​(int c)

      • isFCDInert

        public boolean isFCDInert​(int c)

      • composePair

        public int composePair​(int a,
                       int b)