Jpeg.jpeg.block.ac.symbol: def of gralha-jpeg-decode@0.1.0.1
Import: import gralha-jpeg-decode@0.1.0.1/jpeg.bend as Jpeg
Lines 380-394 of gralha-jpeg-decode@0.1.0.1/jpeg.bend: https://jend.leeeet.dev/read.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&start_line=380&end_line=394

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-bytes@0.1.0.1/bytes.bend as Bin

def jpeg.block.ac.symbol(read: JPEGRead, +coefficients: Bin.Bytes, +predictor: U32, +offset: U32, +index: U32, next: U32 -> JPEGBlock -> JPEGBlock) -> JPEGBlock:
  JPEGRead{symbol, stream} = read
  +rs = symbol
  +input = stream
  +count = (rs % 16 : U32)
  +pos = (index + rs / 16 : U32)
  +end = U32.is_eq(rs, 0)
  +zero = U32.is_eq(rs, 240)
  +ok = jpeg.stream.valid(input) && (end || (zero && U32.is_le((index + 16 : U32), 64)) || (U32.is_gt(count, 0) && U32.is_le(count, 10) && U32.is_lt(pos, 64)))
  +skip = end || Bool.not(ok)
  +result = U.branch(JPEGBlock, skip || zero, _ => JPEGBlock{U.choose(JPEGStream, ok, input, jpeg.stream.invalid(input)), coefficients, predictor},
    _ => jpeg.block.ac.bits(jpeg.bits(input, count), count, coefficients, predictor, offset, pos, _ => block => block))
  next(U.choose(U32, skip, 64, U.choose(U32, zero, (index + 16 : U32), U32.inc(pos))))(result)

@unsafe

Uses (22):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.div
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.inc
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_gt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mod
  https://jend.leeeet.dev/definition.txt?path=gralha-bytes@0.1.0.1/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=JPEGBlock
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=JPEGRead
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=JPEGStream
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=jpeg.bits
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=jpeg.block.ac.bits
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=jpeg.stream.invalid
  https://jend.leeeet.dev/definition.txt?path=gralha-jpeg-decode@0.1.0.1/jpeg.bend&name=jpeg.stream.valid
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=choose