Class: Production

Inherits:
Object show all
Includes:
Indexable, SourceCodeDumpable
Defined in:
lib/rpdf2txt-rockit/grammar.rb,
lib/rpdf2txt-rockit/parsetable_generation.rb

Overview

Decorate Productions

Instance Attribute Summary collapse

Attributes included from Indexable

#factory, #index_number

Instance Method Summary collapse

Methods included from SourceCodeDumpable

as_code, as_method_named, as_module_method_named, #create_new, indent_lines, name_hash, #new_of_my_type, #parameter_named, #to_compact_src, #to_src_in_module, #type_to_src

Constructor Details

#initialize(nonterminal, elements, treeBuilder = nil) ⇒ Production

Returns a new instance of Production.



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 358

def initialize(nonterminal, elements, treeBuilder = nil)
  nonterminal = NonTerminal.new(nonterminal) if nonterminal.class == String
  @nonterminal = make_element(nonterminal)
  @elements = make_elements(elements)
  init_tree_builder(treeBuilder)
end

Instance Attribute Details

#elements ⇒ Object

Right hand side



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 354

def elements
  @elements
end

#nonterminal ⇒ Object

Left hand side



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 355

def nonterminal
  @nonterminal
end

#tree_builder ⇒ Object

Returns the value of attribute tree_builder.



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 356

def tree_builder
  @tree_builder
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 386

def ==(other)
  #Profiler.__enter__("Production#==".intern, other)
  res = other.class == self.class and
    nonterminal == other.nonterminal and
    elements == other.elements and
    tree_builder == other.tree_builder
  #Profiler.__leave__("Production#==".intern, res)
end

#clone_and_substitute(element, substitute) ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 395

def clone_and_substitute(element, substitute)
  index = elements.index element
  substitute = [substitute] unless substitute.kind_of?(Array)
  if index
    Production.new(nonterminal, 
     elements[0...index] + substitute + 
     elements[(index+1)..-1], tree_builder.copy)
  else
    self
  end
end

#create_tree(childrenValues) ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 412

def create_tree(childrenValues)
  tree_builder.create_tree(childrenValues)
end

#inspect ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 407

def inspect
  elements_inspect = @elements.map {|e| e.inspect}.join(" ")
  "#{nonterminal.inspect} -> #{elements_inspect}"
end

#length ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 382

def length
  elements.length
end

#normalize ⇒ Object

def clone

  Production.new(@nonterminal.clone, @elements.clone, @tree_builder.clone)
end



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 371

def normalize
  maybe_normalize, extra_productions = [self], []
  @elements.each do |element|
    if element.kind_of?(Element)
	maybe_normalize, new_extra = element.normalize(maybe_normalize)
	extra_productions += new_extra
    end
  end
  (maybe_normalize + extra_productions).equality_uniq
end

#to_src(name = nil, nameHash = {}) ⇒ Object 



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# File 'lib/rpdf2txt-rockit/grammar.rb', line 416

def to_src(name = nil, nameHash = {})
  assign_to(name,
     new_of_my_type(nonterm_to_symbol(nonterminal),
	     as_code(elements_to_src(nameHash)), tree_builder))
end