Module: Sequence::ArrayLike

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

Instance Method Summary collapse

Instance Method Details

#data_class ⇒ Object 



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# File 'lib/sequence/arraylike.rb', line 5

def data_class; Array end

#index(pat, pos = 0) ⇒ Object 



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

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 



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# File 'lib/sequence/arraylike.rb', line 6

def like; ArrayLike end

#push(*arr) ⇒ Object

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



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

def push(*arr)
  append arr
end

#rindex(pat, pos = -1) ⇒ Object 



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# File 'lib/sequence/arraylike.rb', line 47

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 



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

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

#scan_until(pat) ⇒ Object 



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

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

#scanback(pat) ⇒ Object 



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

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

#scanback_until(pat) ⇒ Object 



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

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

#unshift(*arr) ⇒ Object 



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

def unshift(*arr)
  prepend arr
end