about summary refs log tree commit diff stats
path: root/076stream.mu
blob: aa11b773cb63a16b071eb96c879662733b94e7a1 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
# new type to help incrementally read texts (arrays of characters)
container stream [
  index:number
  data:address:shared:array:character
]

recipe new-stream s:address:shared:array:character -> result:address:shared:stream [
  local-scope
  load-ingredients
  result <- new stream:type
  i:address:number <- get-address *result, index:offset
  *i <- copy 0
  d:address:address:shared:array:character <- get-address *result, data:offset
  *d <- copy s
]

recipe rewind-stream in:address:shared:stream -> in:address:shared:stream [
  local-scope
  load-ingredients
  x:address:number <- get-address *in, index:offset
  *x <- copy 0
]

recipe read-line in:address:shared:stream -> result:address:shared:array:character, in:address:shared:stream [
  local-scope
  load-ingredients
  idx:address:number <- get-address *in, index:offset
  s:address:shared:array:character <- get *in, data:offset
  next-idx:number <- find-next s, 10/newline, *idx
  result <- copy-range s, *idx, next-idx
  *idx <- add next-idx, 1  # skip newline
]

recipe end-of-stream? in:address:shared:stream -> result:boolean [
  local-scope
  load-ingredients
  idx:number <- get *in, index:offset
  s:address:shared:array:character <- get *in, data:offset
  len:number <- length *s
  result <- greater-or-equal idx, len
]