Class: Wilson::MachineCode

Inherits:
Object show all
Defined in:
lib/wilson.rb

Overview

MachineCode is an abstract machine that has subclasses for each concrete machine type that you can write assembly language for. Right now this library only supports X86, so look at MachineCodeX86 for more details on how to use it.

Direct Known Subclasses

MachineCodeX86

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MachineCode

Returns a new instance of MachineCode.



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# File 'lib/wilson.rb', line 520

def initialize
  self.procedure  = nil
  self.bits       = self.defaultBits
  self.processors = self.defaultProcessors
  self.stream     = []

  self.setupMachine
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(msg, *args) ⇒ Object 



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# File 'lib/wilson.rb', line 550

def method_missing msg, *args
  super unless self.instructionFromMessage(msg, *args).assemble
end

Instance Attribute Details

#bits ⇒ Object

Returns the value of attribute bits.



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# File 'lib/wilson.rb', line 516

def bits
  @bits
end

#cachedInstructions ⇒ Object

Returns the value of attribute cachedInstructions.



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# File 'lib/wilson.rb', line 516

def cachedInstructions
  @cachedInstructions
end

#instructions ⇒ Object 



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# File 'lib/wilson.rb', line 543

def instructions
  self.cachedInstructions ||= @instructions.select { |e|
    self.supportsProcessor e.processors
  }
  self.cachedInstructions
end

#procedure ⇒ Object

Returns the value of attribute procedure.



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# File 'lib/wilson.rb', line 516

def procedure
  @procedure
end

#processors ⇒ Object

Returns the value of attribute processors.



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# File 'lib/wilson.rb', line 517

def processors
  @processors
end

#stream ⇒ Object

Returns the value of attribute stream.



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# File 'lib/wilson.rb', line 516

def stream
  @stream
end

Instance Method Details

#assemble(instruction) ⇒ Object 



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# File 'lib/wilson.rb', line 566

def assemble instruction
  raise "no"
  #     aBlock on: MessageNotUnderstood do: [:ex |
  #         ex originator class = BlockClosure ifFalse: [ex pass].
  #         ex resume: (ex originator value m perform: ex parameter selector withArguments: ex parameter arguments)]</body>
end

#future_label ⇒ Object 



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# File 'lib/wilson.rb', line 562

def future_label
  FutureLabel.on self
end

#inspect ⇒ Object 



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# File 'lib/wilson.rb', line 529

def inspect
  "#{self.class}#{stream.inspect}"
end

#instructionFromMessage(msg, *args) ⇒ Object 



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# File 'lib/wilson.rb', line 554

def instructionFromMessage msg, *args
  Instruction.on_message self, [msg, *args]
end

#label ⇒ Object 



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# File 'lib/wilson.rb', line 558

def label
  Label.on_at(self, stream.size)
end

#supportsProcessor(instructionProcessors) ⇒ Object 



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# File 'lib/wilson.rb', line 538

def supportsProcessor instructionProcessors
  # TODO: can still be improved. hashes, caching... something
  ! (processors & instructionProcessors).empty?
end