regionMatchesAscii() — netty Function Reference

Architecture documentation for the regionMatchesAscii() function in AsciiString.java from the netty codebase.

Function java CommonUtil Logging calls 2 called by 1

Entity Profile

CommonUtil→ Logging→ regionMatchesAscii() — netty Function Reference

Dependency Diagram

graph TD
  bd440c99_4c19_2dbd_35e0_2686c07dfa2f["regionMatchesAscii()"]
  a41de6d4_fd08_8a12_95fd_35db12fdb4cc["AsciiString"]
  bd440c99_4c19_2dbd_35e0_2686c07dfa2f -->|defined in| a41de6d4_fd08_8a12_95fd_35db12fdb4cc
  0b6ce7e7_e586_2b82_c0ba_7b3fff596a81["indexOfIgnoreCaseAscii()"]
  0b6ce7e7_e586_2b82_c0ba_7b3fff596a81 -->|calls| bd440c99_4c19_2dbd_35e0_2686c07dfa2f
  75d97956_7df9_5d75_913f_f87ea4ad5085["regionMatches()"]
  bd440c99_4c19_2dbd_35e0_2686c07dfa2f -->|calls| 75d97956_7df9_5d75_913f_f87ea4ad5085
  a5f74bee_8f39_ae4d_cb76_e1565aa342ca["regionMatchesCharSequences()"]
  bd440c99_4c19_2dbd_35e0_2686c07dfa2f -->|calls| a5f74bee_8f39_ae4d_cb76_e1565aa342ca
  style bd440c99_4c19_2dbd_35e0_2686c07dfa2f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

common/src/main/java/io/netty/util/AsciiString.java lines 1655–1675

    public static boolean regionMatchesAscii(final CharSequence cs, final boolean ignoreCase, final int csStart,
                                        final CharSequence string, final int start, final int length) {
        if (cs == null || string == null) {
            return false;
        }

        if (!ignoreCase && cs instanceof String && string instanceof String) {
            //we don't call regionMatches from String for ignoreCase==true. It's a general purpose method,
            //which make complex comparison in case of ignoreCase==true, which is useless for ASCII-only strings.
            //To avoid applying this complex ignore-case comparison, we will use regionMatchesCharSequences
            return ((String) cs).regionMatches(false, csStart, (String) string, start, length);
        }

        if (cs instanceof AsciiString) {
            return ((AsciiString) cs).regionMatches(ignoreCase, csStart, string, start, length);
        }

        return regionMatchesCharSequences(cs, csStart, string, start, length,
                                          ignoreCase ? AsciiCaseInsensitiveCharEqualityComparator.INSTANCE :
                                                      DefaultCharEqualityComparator.INSTANCE);
    }