Module: Sequence::ArrayLike

Included in:
OfArray, SingleItem
Defined in:
lib/sequence/arraylike.rb

Instance Method Summary collapse

Instance Method Details

#data_class ⇒ Object 



9
 
# File 'lib/sequence/arraylike.rb', line 9

def data_class; Array end

#index(pat, pos = 0) ⇒ Object 



42
43
44
45
46
47
48
49
 
# File 'lib/sequence/arraylike.rb', line 42

def index pat,pos=0
  pos=_normalize_pos(pos)
  begin
    pat===(slice pos) and return pos
    pos+=1
  end until pos>=size
  nil
end

#like ⇒ Object 



10
 
# File 'lib/sequence/arraylike.rb', line 10

def like; ArrayLike end

#new_data ⇒ Object

Return an empty object used for returning a sequence of elements. The only method required of this object is << (append to the sequence). usually [] or “”



8
 
# File 'lib/sequence/arraylike.rb', line 8

def new_data; [] end

#push(*arr) ⇒ Object

I ought to have #match and #matchback like in StringLike too



34
35
36
 
# File 'lib/sequence/arraylike.rb', line 34

def push(*arr)
  append arr
end

#rindex(pat, pos = -1) ⇒ Object 



51
52
53
54
55
56
57
58
 
# File 'lib/sequence/arraylike.rb', line 51

def rindex pat,pos=-1
  pos=_normalize_pos(pos)
  begin
    pat===(slice pos) and return pos
    pos-=1
  end until pos<0
  nil
end

#scan(pat) ⇒ Object 



12
13
14
15
 
# File 'lib/sequence/arraylike.rb', line 12

def scan(pat)
    elem=nil
    more_data? and holding?{pat===(elem=read1)} and return [elem]
end

#scan_until(pat) ⇒ Object 



17
18
19
20
 
# File 'lib/sequence/arraylike.rb', line 17

def scan_until pat
    i=index(pat,pos) or return
    read(i-pos)+scan(pat)
end

#scanback(pat) ⇒ Object 



22
23
24
25
 
# File 'lib/sequence/arraylike.rb', line 22

def scanback pat
    elem=nil
    was_data? and holding?{pat===(elem=readback1)} and return [elem]
end

#scanback_until(pat) ⇒ Object 



27
28
29
30
 
# File 'lib/sequence/arraylike.rb', line 27

def scanback_until pat
    i=rindex(pat,pos) or return
    readback(pos-i)
end

#unshift(*arr) ⇒ Object 



38
39
40
 
# File 'lib/sequence/arraylike.rb', line 38

def unshift(*arr)
  prepend arr
end