processNibble() — netty Function Reference

Architecture documentation for the processNibble() function in HpackHuffmanDecoder.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Buffer→ Allocators→ processNibble() — netty Function Reference

Dependency Diagram

graph TD
  90e35007_ca12_f1f0_c231_aed4a6e3fc8b["processNibble()"]
  75ae760e_009e_dc0c_af13_9cd0fad0853b["HpackHuffmanDecoder"]
  90e35007_ca12_f1f0_c231_aed4a6e3fc8b -->|defined in| 75ae760e_009e_dc0c_af13_9cd0fad0853b
  7ab112f9_1f08_f8d9_4b84_1251288c391a["process()"]
  7ab112f9_1f08_f8d9_4b84_1251288c391a -->|calls| 90e35007_ca12_f1f0_c231_aed4a6e3fc8b
  style 90e35007_ca12_f1f0_c231_aed4a6e3fc8b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http2/src/main/java/io/netty/handler/codec/http2/HpackHuffmanDecoder.java lines 4722–4735

    private boolean processNibble(int input) {
        // The high nibble of the flags byte of each row is always zero
        // (low nibble after shifting row by 12), since there are only 3 flag bits
        int index = state >> 12 | (input & 0x0F);
        state = HUFFS[index];
        if ((state & HUFFMAN_FAIL_SHIFT) != 0) {
            return false;
        }
        if ((state & HUFFMAN_EMIT_SYMBOL_SHIFT) != 0) {
            // state is always positive so can cast without mask here
            dest[k++] = (byte) state;
        }
        return true;
    }