Class: CSquare::Generator::Op

Inherits:
Object
  • Object
show all
Defined in:
lib/csquare/generator/op.rb

Direct Known Subclasses

AssignOp, BinaryOp

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(blueprint, id) ⇒ Op

Returns a new instance of Op.



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# File 'lib/csquare/generator/op.rb', line 2

def initialize blueprint, id
  @blueprint = blueprint
  @id        = id
  @patterns  = {}
end

Instance Attribute Details

#blueprint ⇒ Object (readonly)

Returns the value of attribute blueprint.



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# File 'lib/csquare/generator/op.rb', line 8

def blueprint
  @blueprint
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/csquare/generator/op.rb', line 8

def id
  @id
end

#patterns ⇒ Object (readonly)

Returns the value of attribute patterns.



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# File 'lib/csquare/generator/op.rb', line 8

def patterns
  @patterns
end

Instance Method Details

#[](t) ⇒ Object 



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# File 'lib/csquare/generator/op.rb', line 78

def [] t
  @patterns[t]
end

#[]=(t_or_ary, pattern) ⇒ Object 



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# File 'lib/csquare/generator/op.rb', line 82

def []= t_or_ary, pattern
  if t_or_ary.is_a?(Array)
    t_or_ary.each do |t|
      @patterns[t] = pattern
    end
  else
    @patterns[t_or_ary] = pattern
  end
end

#decorated(args_and_types, return_type, default_type_symbol) ⇒ Object 



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# File 'lib/csquare/generator/op.rb', line 15

def decorated args_and_types, return_type, default_type_symbol

  # If we're dealing with a blueprint containing only one type, convert all LONG typenames to regular typenames
  args_types =
  if blueprint.types.size == 1
    h = {}
    args_and_types.each_pair do |arg, type|
      h[arg] = type == blueprint.long_key ? blueprint.key : type
    end

    # Also update the return_type if applicable
    return_type = blueprint.key if return_type == blueprint.long_key
    h
  else
    args_and_types
  end

  # Determine pattern and type symbol
  pattern     = select_pattern_clone(args_types, return_type)

  return nil if pattern.nil? # no match, no need to deal with this expression

  type_symbol = select_type_symbol(args_types.values, return_type, default_type_symbol)

  # Replace $0, $1, ...
  args_types.keys.each_with_index do |arg, i|
    if arg =~ /^\*/ && pattern =~ /\$#{i}\./ # Flip *x.y to x->y
      deref_arg = "#{arg[1...arg.size]}->"
      pattern.gsub!(/\$#{i}\./, deref_arg)
    else
      pattern.gsub!(/\$#{i}/, arg.to_s)
    end
  end


  #if self.is_a?(CSquare::Generator::AssignOp)
  #  STDERR.puts args_types
  #  if args_types.has_key?(0) && args_types[0] == :integer && return_type == "LONG_TYPE"
  #    require 'pry'
  #    binding.pry
  #  end
  #end


  begin
    # Build an AST for the completed expression
    ast = C::Expression.parse(pattern)
  rescue C::ParseError => e
    STDERR.puts "\nParseError:"
    STDERR.puts pattern.inspect
    raise(e)
  end

  ast.decorate_calls!(type_symbol, blueprint)

  # Return type and AST get returned
  if default_type_symbol == type_symbol
    [ast, blueprint.key]
  else
    [ast, blueprint.long_key]
  end
end

#has_key?(t) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/csquare/generator/op.rb', line 92

def has_key? t
  @patterns.has_key?(t)
end

#inspect ⇒ Object 



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# File 'lib/csquare/generator/op.rb', line 10

def inspect
  obj_id = "0x#{(self.object_id << 1).to_s(16)}"
  "#<#{self.class.to_s}:#{obj_id} id=#{@id.inspect} blueprint=#{@blueprint.id.inspect} keys=#{patterns.keys.inspect}>"
end