Class: Sequence::Indexed

Inherits:
UseData show all
Defined in:
lib/sequence/indexed.rb

Overview

This class makes a seq over an Array or String.

Direct Known Subclasses

OfArray, OfString

Constant Summary

Constants inherited from Sequence

SubSequence, VERSION

Instance Attribute Summary collapse

Attributes inherited from Sequence

#last_match

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from UseData

#read, #readahead, #readback, #readbehind, #size

Methods inherited from Sequence

#+, #-, #<<, [], #[], #_adjust_pos_on_change, #_default_maxmatchlen, #_delete_position, #_normalize_pos, #_parse_slice_args, #all_data, #append, #begin, #begin!, #check, #check_until, #checkback, #checkback_until, #close, #closed?, #delete, #each, #empty?, #end, #end!, #exist?, #existback?, #first, #goto, #holding, #holding!, #holding?, #holding_position, #holding_position!, #holding_position?, #insert, #last, #length, #match?, #matchback?, #more_data?, #move, #move!, #nearbegin, #nearend, #new, #notify_change, #on_change_notify, #original__new, #overwrite, #pop, #pos=, #pos?, #position, #position=, #position?, #pred, #prepend, #prop, #read, #read!, #read1, #readahead, #readahead1, #readback, #readback1, #readbehind, #readbehind1, #rest_size, #reversed, #shift, #size, #skip, #skip_literal, #skip_until, #skip_until_literal, #skipback, #skipback_until, #slice, #slice!, #slice1, #slice1!, #subseq, #succ, #to_sequence, #was_data?, #write, #writeahead, #writeback, #writebehind

Constructor Details

#initialize(data, pos = 0) ⇒ Indexed

Returns a new instance of Indexed.



25
26
27
28
 
# File 'lib/sequence/indexed.rb', line 25

def initialize(data,pos=0)
    @data = data
    @pos = pos
end

Instance Attribute Details

#data ⇒ Object (readonly)

protected

def _delete1after?
    @data.slice!(@pos)
end
def _delete1before?
    @pos==0 ? nil : @data.slice!(@pos-=1)
end
def _insert1before(v)
    @data[@pos,0] = (new_data << v)
    @pos += 1
    true
end
def _insert1after(v)
    @data[@pos,0] = (new_data << v)
    true
end

public



54
55
56
 
# File 'lib/sequence/indexed.rb', line 54

def data
  @data
end

#pos ⇒ Object (readonly)

protected

def _delete1after?
    @data.slice!(@pos)
end
def _delete1before?
    @pos==0 ? nil : @data.slice!(@pos-=1)
end
def _insert1before(v)
    @data[@pos,0] = (new_data << v)
    @pos += 1
    true
end
def _insert1after(v)
    @data[@pos,0] = (new_data << v)
    true
end

public



54
55
56
 
# File 'lib/sequence/indexed.rb', line 54

def pos
  @pos
end

Class Method Details

._orig_new ⇒ Object 



16
 
# File 'lib/sequence/indexed.rb', line 16

alias _orig_new new

.new(data, p = 0) ⇒ Object 



17
18
19
20
21
22
 
# File 'lib/sequence/indexed.rb', line 17

def new(data,p=0)
  if data.respond_to? :to_sequence
    data.to_sequence
  else _orig_new(data,p)
  end
end

Instance Method Details

#_pos=(x) ⇒ Object 



55
 
# File 'lib/sequence/indexed.rb', line 55

def _pos= x; @pos=x end

#eof? ⇒ Boolean

Returns:

  • (Boolean) 


57
 
# File 'lib/sequence/indexed.rb', line 57

def eof?; @pos >= size end

#maxmatchlen(backwards) ⇒ Object 



61
 
# File 'lib/sequence/indexed.rb', line 61

def maxmatchlen(backwards) size end

#maxmatchlen=(x) ⇒ Object

can’t change maxmatchlen (maybe someday?)



64
 
# File 'lib/sequence/indexed.rb', line 64

def maxmatchlen= x; end

#modify(*args) ⇒ Object Also known as: []= 



66
67
68
69
70
71
72
73
 
# File 'lib/sequence/indexed.rb', line 66

def modify(*args)
  newsize=args.last.size
  first,len,only1=_parse_slice_args( *args[0...-1])
  @data.[]=(*args)
  @pos=_adjust_pos_on_change(@pos, first,len,newsize)
  notify_change(self,first,len,newsize)      
  return args.last
end

#new_data ⇒ Object

:stopdoc:



30
31
32
 
# File 'lib/sequence/indexed.rb', line 30

def new_data
    @data.class.new
end