Class: Glaemscribe::API::ResolveVirtualsPostProcessorOperator

Inherits:
PostProcessorOperator show all
Defined in:
lib/api/post_processor/resolve_virtuals.rb

Instance Attribute Summary

Attributes inherited from PrePostProcessorOperator

#finalized_glaeml_element, #glaeml_element

Instance Method Summary collapse

Methods inherited from PrePostProcessorOperator

#eval_arg, #finalize_glaeml_element, #initialize

Constructor Details

This class inherits a constructor from Glaemscribe::API::PrePostProcessorOperator

Instance Method Details

#apply(tokens, charset) ⇒ Object 



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# File 'lib/api/post_processor/resolve_virtuals.rb', line 40

def apply(tokens,charset)
  
  reset_trigger_states(charset)
  
  tokens.each_with_index{ |token,idx|
    
    if token == '*SPACE'
      reset_trigger_states(charset)
      next
    end
    
    # Check if token is a virtual char
    c = charset[token]
    next if c.nil? # May happen for empty tokens
    if c.virtual?
      # Try to replace
      last_trigger = @last_triggers[c]
      if last_trigger != nil
        tokens[idx] = last_trigger.names.first # Take the first name of the non-virtual replacement.
      end
    else
      # Update states of virtual classes
      charset.virtual_chars.each{|vc|
        rc                  = vc[token]
        @last_triggers[vc]  = rc if rc != nil 
      }
    end
  }
  tokens
end

#finalize(trans_options) ⇒ Object 



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# File 'lib/api/post_processor/resolve_virtuals.rb', line 28

def finalize(trans_options)
  super(trans_options)
  @last_triggers = {} # Allocate the lookup here to optimize
end

#reset_trigger_states(charset) ⇒ Object 



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# File 'lib/api/post_processor/resolve_virtuals.rb', line 33

def reset_trigger_states(charset)
  # For each virtual char in charset, maintain a state.
  charset.virtual_chars.each{ |vc|
    @last_triggers[vc] = nil # Clear the state
  }
end