Class: C::Node

Inherits:
Object
  • Object
show all
Includes:
CSquare::Hashable
Defined in:
lib/csquare.rb

Instance Method Summary collapse

Methods included from CSquare::Hashable

included

Instance Method Details

#csquare_key ⇒ Object 



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# File 'lib/csquare.rb', line 427

def csquare_key
  self.to_s
end

#decorate_calls!(type_symbol, blueprint_obj) ⇒ Object 



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# File 'lib/csquare.rb', line 323

def decorate_calls! type_symbol, blueprint_obj
  each do |n|
    n.decorate_calls! type_symbol, blueprint_obj
  end
end

#expand_node(node) ⇒ Object

Takes some assignment expression node and turns it into a regular assign.

e.g., x = y —> x = x y



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# File 'lib/csquare.rb', line 399

def expand_node node
  return node unless node.AssignmentExpression? && !node.Assign?

  # Figure out the new class
  begin
    klass    = C.const_get(node.class.to_s[3...-6])
    new_node = C::Assign.new(:lval => node.lval.clone, :rval => klass.send(:new, :expr1 => node.lval, :expr2 => node.rval))

    node.replace_with(new_node)
    new_node
  rescue NameError => e
    STDERR.puts "Invalid CAST class #{node.class.to_s[3...-6].inspect}"
    raise e
  end
end

#has_local_below?(var) ⇒ Boolean

Is some local ‘var’ declared anywhere in this scope or below? (Is it unsafe to declare it in this scope?)

Returns:

  • (Boolean) 


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# File 'lib/csquare.rb', line 417

def has_local_below? var
  return true if self.respond_to?(:locals) && locals.has_key?(var)

  self.each do |n|
    return true if has_local_below?(var)
  end

  false
end

#new_temp_local(type) ⇒ Object 



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# File 'lib/csquare.rb', line 330

def new_temp_local type
  parent_block.new_temp_local(type)
end

#new_temp_statement(statement, before_statement) ⇒ Object 



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# File 'lib/csquare.rb', line 334

def new_temp_statement statement, before_statement
  parent_block.new_temp_statement(statement, before_statement)
end

#op ⇒ Object 



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# File 'lib/csquare.rb', line 305

def op
  CSquare::Generator::CAST_TO_OP[self.class]
end

#parent_block ⇒ Object

Find the parent block



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# File 'lib/csquare.rb', line 340

def parent_block
  p = self.parent
  while !p.Block?
    p = p.parent
  end
  p
end

#parent_function_def ⇒ Object

Find the parent FunctionDef



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# File 'lib/csquare.rb', line 359

def parent_function_def
  p = self.parent
  while !p.FunctionDef?
    p = p.parent
  end
  p
end

#parent_stmt ⇒ Object 



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# File 'lib/csquare.rb', line 349

def parent_stmt
  p = self.parent
  while !p.Statement?
    p = p.parent
  end
  p
end

#recombine!(function, blueprint, type_symbol, return_type = nil) ⇒ Object

Replace some expression with the pattern from Blueprint.



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# File 'lib/csquare.rb', line 369

def recombine! function, blueprint, type_symbol, return_type=nil

  args_types = {}

  if respond_to?(:recombine_recursive!)
    self.recombine_recursive! function, blueprint, type_symbol, return_type
  else

    self.fields.each_with_index do |f,i|
      n = self.send(f.reader)

      if n.respond_to?(:recombine!)
        n = expand_node(n) if blueprint.has_op?(n.op)
        result = n.recombine! function, blueprint, type_symbol, return_type
        replace_node(n, result[0]) unless result.nil? || result[0].nil? || result[0] == n
      end
    end
  end

  if respond_to?(:return_typename)
    [self, self.return_typename(function, blueprint)]
  else
    [self, nil]
  end
end

#recursively_replace_casts!(typenames_and_types) ⇒ Object

Recursively replace typenames with actual types.



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# File 'lib/csquare.rb', line 310

def recursively_replace_casts! typenames_and_types
  each do |n|
    n.recursively_replace_casts! typenames_and_types
  end
end

#replace_types!(typenames_and_types) ⇒ Object 



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# File 'lib/csquare.rb', line 316

def replace_types! typenames_and_types
  each do |n|
    n.replace_types! typenames_and_types
  end
end