Class: Stupidedi::Builder::InitialState

Inherits:
AbstractState show all
Defined in:
lib/stupidedi/builder/states/initial_state.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from AbstractState

#leaf?, lsequence, mkcomposite, mkelement, mkrepeated, mksegment, mksimple, #pretty_print, push, sequence, tsequence

Methods included from Inspect

#inspect

Constructor Details

#initialize(separators, segment_dict, instructions, zipper, children) ⇒ InitialState

Returns a new instance of InitialState.



23
24
25
26
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 23

def initialize(separators, segment_dict, instructions, zipper, children)
  @separators, @segment_dict, @instructions, @zipper, @children =
    separators, segment_dict, instructions, zipper, children
end

Instance Attribute Details

#children ⇒ Array<AbstractState> (readonly)

Returns:



21
22
23
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 21

def children
  @children
end

#instructions ⇒ InstructionTable (readonly)

Returns:



15
16
17
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 15

def instructions
  @instructions
end

#segment_dict ⇒ Reader::SegmentDict (readonly)

Returns:



12
13
14
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 12

def segment_dict
  @segment_dict
end

#separators ⇒ Reader::Separators (readonly)

Returns:



9
10
11
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 9

def separators
  @separators
end

#zipper ⇒ Zipper::AbstractCursor (readonly)

Returns:



18
19
20
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 18

def zipper
  @zipper
end

Class Method Details

.build ⇒ InitialState

Returns:



42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 42

def build
  new(
    Reader::Separators.empty,
    Reader::SegmentDict.empty,

    InstructionTable.build(
      # We initially accept only a single segment. When reading the "ISA"
      # segment, we push a new InterchangeState.
      Instruction.new(:ISA, nil, 0, 0, TransmissionState).cons),

    # Create a new parse tree with a Transmission as the root, and descend
    # to the placeholder where the first child node will be placed.
    Zipper.build(Values::TransmissionVal.new),
    [])
end

.start ⇒ Zipper::AbstractCursor

Returns:



59
60
61
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 59

def start
  Zipper.build(build)
end

Instance Method Details

#copy(changes = {}) ⇒ InitialState

Returns:



29
30
31
32
33
34
35
36
 
# File 'lib/stupidedi/builder/states/initial_state.rb', line 29

def copy(changes = {})
  InitialState.new \
    changes.fetch(:separators, @separators),
    changes.fetch(:segment_dict, @segment_dict),
    changes.fetch(:instructions, @instructions),
    changes.fetch(:zipper, @zipper),
    changes.fetch(:children, @children)
end