Class: N65::Inc

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

Overview

This directive instruction can include another asm file

Defined Under Namespace

Classes: FileNotFound

Constant Summary collapse

SystemInclude =

System include directory

File.dirname(__FILE__) + "/../../../nes_lib"

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from InstructionBase

#unresolved_symbols?

Constructor Details

#initialize(filename) ⇒ Inc

Initialize with filename



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# File 'lib/n65/directives/inc.rb', line 41

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/inc.rb', line 19

def self.parse(line)
  ##  Do We have a system directory include?
  match_data = line.match(/^\.inc <([^>]+)>$/)
  unless match_data.nil?
    filename = File.join(SystemInclude, match_data[1])
    return Inc.new(filename)
  end

  ##  Do We have a project relative directory include?
  match_data = line.match(/^\.inc "([^"]+)"$/)
  unless match_data.nil?
    filename = File.join(Dir.pwd, match_data[1])
    return Inc.new(filename)
  end

  ##  Nope, not an inc directive
  nil
end

Instance Method Details

#exec(assembler) ⇒ Object

Execute on the assembler



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# File 'lib/n65/directives/inc.rb', line 48

def exec(assembler)
  unless File.exists?(@filename)
    fail(FileNotFound, ".inc can't find #{@filename}")
  end
  File.read(@filename).split(/\n/).each do |line|
    assembler.assemble_one_line(line)
  end
end

#to_s ⇒ Object

Display



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# File 'lib/n65/directives/inc.rb', line 60

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