Class: Rubinius::InstructionSet::OpCode

Inherits:
Object
  • Object
show all
Defined in:
lib/rubinius/code/compiler/iseq.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opcode, bytecode, params) ⇒ OpCode

Returns a new instance of OpCode.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 17

def initialize(opcode, bytecode, params)
  @opcode         = opcode
  @bytecode       = bytecode
  @args           = params[:args]
  @arg_count      = @args.size
  @size           = @arg_count + 1
  @position       = nil
  @produced_position = nil

  @stack_consumed, @stack_produced = params[:stack]
  if @stack_consumed.kind_of? Fixnum
    if @stack_produced.kind_of? Fixnum
      @variable_stack = false
      @stack_difference = @stack_produced - @stack_consumed
    else
      @variable_stack = true
      produced_extra, @produced_position, @produced_times = @stack_produced
      @stack_difference = produced_extra -  @stack_consumed
    end
  else
    @variable_stack = true
    extra, @position = @stack_consumed

    if @stack_produced.kind_of? Fixnum
      @stack_difference = @stack_produced - extra
    else
      produced_extra, @produced_position, @produced_times = @stack_produced
      @stack_difference = produced_extra - extra
    end
  end

  @control_flow = params[:control_flow]
end

Instance Attribute Details

#arg_count ⇒ Object (readonly)

Returns the value of attribute arg_count.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def arg_count
  @arg_count
end

#args ⇒ Object (readonly)

Returns the value of attribute args.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def args
  @args
end

#bytecode ⇒ Object (readonly)

Returns the value of attribute bytecode.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def bytecode
  @bytecode
end

#control_flow ⇒ Object (readonly)

Returns the value of attribute control_flow.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def control_flow
  @control_flow
end

#opcode ⇒ Object (readonly) Also known as: name

Returns the value of attribute opcode.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def opcode
  @opcode
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def position
  @position
end

#produced_position ⇒ Object (readonly)

Returns the value of attribute produced_position.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def produced_position
  @produced_position
end

#size ⇒ Object (readonly) Also known as: width

Returns the value of attribute size.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def size
  @size
end

#stack ⇒ Object (readonly)

Returns the value of attribute stack.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def stack
  @stack
end

#stack_consumed ⇒ Object (readonly)

Returns the value of attribute stack_consumed.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def stack_consumed
  @stack_consumed
end

#stack_difference ⇒ Object (readonly)

Returns the value of attribute stack_difference.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def stack_difference
  @stack_difference
end

#stack_produced ⇒ Object (readonly)

Returns the value of attribute stack_produced.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def stack_produced
  @stack_produced
end

#variable_stack ⇒ Object (readonly)

Returns the value of attribute variable_stack.



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# File 'lib/rubinius/code/compiler/iseq.rb', line 10

def variable_stack
  @variable_stack
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/rubinius/code/compiler/iseq.rb', line 55

def to_s
  @opcode.to_s
end

#variable_stack? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubinius/code/compiler/iseq.rb', line 51

def variable_stack?
  @variable_stack
end