TensorFile.extents: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/tensor_file.bend as TensorFile
Lines 213-222 of stelliferous@0.0.2.0/tensor_file.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/tensor_file.bend&start_line=213&end_line=222

import Base

# Extents up to the closing parenthesis: digits, commas and spaces.
def extents(text: List<&2,U32>,+current: U32,digits: Bool,valid: Bool,shape: List<&2,U32>) -> Maybe<&2,List<&2,U32>>:
  match text:
    case Nil{}: None{}
    case Con{+byte,rest}:
      match byte:
        case 41: closed_shape(valid,pushed(digits,current,shape))
        case 44: extents(rest,0,False{},valid,pushed(digits,current,shape))
        case 32: extents(rest,current,digits,valid,shape)
        case _: extents(rest,(current * 10 + byte - 48 : U32),True{},valid && U32.is_le(48,byte) && U32.is_le(byte,57),shape)

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  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.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.Con
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.Nil
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_file.bend&name=closed_shape
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_file.bend&name=pushed