Class: N65::IncBin

Inherits:
InstructionBase show all
Defined in:
lib/n65/directives/incbin.rb

Overview

This directive instruction can include a binary file

Defined Under Namespace

Classes: FileNotFound

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from InstructionBase

#unresolved_symbols?

Constructor Details

#initialize(filename) ⇒ IncBin

Initialize with filename



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# File 'lib/n65/directives/incbin.rb', line 26

def initialize(filename)
  @filename = filename
end

Class Method Details

.parse(line) ⇒ Object

Try to parse an incbin directive



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# File 'lib/n65/directives/incbin.rb', line 16

def self.parse(line)
  match_data = line.match(/^\.incbin "([^"]+)"$/)
  return nil if match_data.nil?
  filename = match_data[1]
  IncBin.new(filename)
end

Instance Method Details

#exec(assembler) ⇒ Object

Execute on the assembler



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# File 'lib/n65/directives/incbin.rb', line 33

def exec(assembler)
  unless File.exists?(@filename)
    fail(FileNotFound, ".incbin can't find #{@filename}")
  end
  data = File.read(@filename).unpack('C*')
  assembler.write_memory(data)
end

#to_s ⇒ Object

Display



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# File 'lib/n65/directives/incbin.rb', line 44

def to_s
  ".incbin \"#{@filename}\""
end