AmlField.fld.keep: def of bend-osdev-acpi@0.1.1.0
Import: import bend-osdev-acpi@0.1.1.0/aml_field.bend as AmlField
Lines 171-184 of bend-osdev-acpi@0.1.1.0/aml_field.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-acpi@0.1.1.0/aml_field.bend&start_line=171&end_line=184

import Base
import bend-osdev-word64@0.1.1.0/word64.bend as W
import bend-osdev-acpi@0.1.1.0/error.bend as E
import bend-osdev-acpi@0.1.1.0/aml_host.bend as Hs

# the unit's bits that are not the field's, by the update rule: read
# (Preserve), all ones, all zeros
def fld.keep(~H: Data, ~io: H -> Hs.AmlHostOp -> Result<&2, &2, E.AcpiError, Hs.AmlHostAns<H>>, whole: Bool, rule: Nat, h: H, +a: Hs.AmlAccess) -> Result<&2, &2, E.AcpiError, Hs.AmlHostAns<H>>:
  match whole:
    case True{}:
      Done{Hs.AmlHostAns{h, W.W64.zero()}}
    case False{}:
      match rule:
        case 1n:
          Done{Hs.AmlHostAns{h, W.W64.max()}}
        case 2n:
          Done{Hs.AmlHostAns{h, W.W64.zero()}}
        case _:
          io(h, Hs.AmlHRead{a})

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.1.0/aml_host.bend&name=AmlAccess
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.1.0/aml_host.bend&name=AmlHostAns
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.1.0/aml_host.bend&name=AmlHostOp
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.1.0/error.bend&name=AcpiError
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.0/word64.bend&name=W64.max
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.0/word64.bend&name=W64.zero