Class: Command

Inherits:
Object
  • Object
show all
Defined in:
lib/command.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, file_deps, fn) ⇒ Command

Returns a new instance of Command.



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# File 'lib/command.rb', line 8

def initialize(name, file_deps, fn)
  @name = name
  # When one of these files changes, the command should rerun
  # Type: FileDep, or nil
  @file_deps = file_deps
  @fn = fn
  @overwrite_should_run = false
end

Instance Attribute Details

#fn ⇒ Object

Returns the value of attribute fn.



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# File 'lib/command.rb', line 5

def fn
  @fn
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/command.rb', line 4

def name
  @name
end

#overwrite_should_run ⇒ Object

Returns the value of attribute overwrite_should_run.



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# File 'lib/command.rb', line 6

def overwrite_should_run
  @overwrite_should_run
end

Instance Method Details

#call ⇒ Object

Execute the command if needed (dependency files changed)



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# File 'lib/command.rb', line 18

def call
  if self.should_run?
    self.call_now()
  end
end

#call_now ⇒ Object

Force call the command, even if none of the files changed



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# File 'lib/command.rb', line 25

def call_now
  $file = nil
  $files = nil

  if @file_deps.nil?
    @fn.call()
    return
  end
  
  if @file_deps.type == :each
    @file_deps.files.each do |file_obj|
      $file = file_obj
      @fn.call()
    end
  else
    $files = @file_deps.files
    @fn.call()
  end
end

#should_run? ⇒ Boolean

Returns wheter the command should run, meaning if any of the depency files changed

Returns:

  • (Boolean) 


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# File 'lib/command.rb', line 47

def should_run?
  return true if @overwrite_should_run
  
  if changed? "__BEAVER__CONFIG__", $PROGRAM_NAME
    # Ruby script itself changed
    # TODO: does not account for dependencies of the script (probably uncommon though)

    # Clear cache, because the config failed
    reset_cache

    unless @file_deps.nil?
      @file_deps.each_file do |file|
        $cache.files.add(@name, file)
      end
    end
    
    return true
  end
  
  if @file_deps.nil?
    return true
  end

  changed = false
  @file_deps.each_file do |file|
    if !changed && (changed? @name, file)
      changed = true
    end
    
    $cache.files.add(@name, file)
  end

  return changed
end