Class: MotionBlender::Analyzer::Parser

Inherits:
Object
  • Object
show all
Includes:
ActiveSupport::Callbacks
Defined in:
lib/motion_blender/analyzer/parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/motion_blender/analyzer/parser.rb', line 17

def initialize file
  @file = file.to_s
  @evaluators = []
end

Instance Attribute Details

#cache ⇒ Object (readonly)

Returns the value of attribute cache.



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# File 'lib/motion_blender/analyzer/parser.rb', line 15

def cache
  @cache
end

#evaluators ⇒ Object (readonly)

Returns the value of attribute evaluators.



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# File 'lib/motion_blender/analyzer/parser.rb', line 15

def evaluators
  @evaluators
end

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/motion_blender/analyzer/parser.rb', line 15

def file
  @file
end

Instance Method Details

#evaluate(source) ⇒ Object 



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# File 'lib/motion_blender/analyzer/parser.rb', line 50

def evaluate source
  @evaluators << Evaluator.new(source)
  @evaluators.last.run
end

#last_trace ⇒ Object 



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# File 'lib/motion_blender/analyzer/parser.rb', line 59

def last_trace
  @evaluators.last.try :trace
end

#parse ⇒ Object 



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# File 'lib/motion_blender/analyzer/parser.rb', line 22

def parse
  srcs = cache.fetch do
    run_callbacks :parse do
      ast = ::Parser::CurrentRuby.parse_file(@file)
      ast && traverse(Source.new(ast: ast))
      @evaluators.map(&:source).map(&:attributes)
    end
  end
  if srcs && cache.hit?
    srcs.each do |attrs|
      evaluate Source.new(attrs)
    end
  end
  self
end

#raketime_block?(source) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion_blender/analyzer/parser.rb', line 67

def raketime_block? source
  source.type.block? &&
    (source.children.first.code == 'MotionBlender.raketime')
end

#require_command?(source) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion_blender/analyzer/parser.rb', line 63

def require_command? source
  source.type.send? && Require.acceptable?(source.method)
end

#requires ⇒ Object 



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# File 'lib/motion_blender/analyzer/parser.rb', line 55

def requires
  @evaluators.map(&:requires).flatten
end

#traverse(source) ⇒ Object 



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# File 'lib/motion_blender/analyzer/parser.rb', line 42

def traverse source
  if require_command?(source)
    evaluate source
  elsif !raketime_block?(source)
    source.children.each { |src| traverse src }
  end
end