Class: Vm::Instructions::MemoryAccessOperations::StaticOperation

Inherits:
Object
  • Object
show all
Defined in:
lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object_name, index) ⇒ StaticOperation

Returns a new instance of StaticOperation.



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# File 'lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb', line 8

def initialize(object_name, index)
  @index = index
  @object_name = object_name
end

Instance Attribute Details

#index ⇒ Object (readonly)

Returns the value of attribute index.



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# File 'lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb', line 6

def index
  @index
end

#object_name ⇒ Object (readonly)

Returns the value of attribute object_name.



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# File 'lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb', line 6

def object_name
  @object_name
end

Class Method Details

.segments ⇒ Object 



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# File 'lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb', line 37

def self.segments
  %w[static]
end

Instance Method Details

#to_asm ⇒ Object 



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# File 'lib/hackasm/vm/instructions/memory_access_operations/static_operation.rb', line 13

def to_asm
  if operation == "push"
    %Q{
      @#{object_name}.#{index}
      D=M
      @SP
      A=M
      M=D
      @SP
      M=M+1
    }.strip
  else
    %Q{
      @SP
      M=M-1
      @SP
      A=M
      D=M
      @#{object_name}.#{index}
      M=D
    }.strip
  end
end