Class: Y2R::AST::YCP::YEUnary

Inherits:
Node
  • Object
show all
Defined in:
lib/y2r/ast/ycp.rb

Constant Summary collapse

OPS_TO_OPS = 
{
  "!"  => "!"
}
OPS_TO_OPS_OPTIONAL = 
{
  "-"  => "-",
  "~"  => "~",
}
OPS_TO_METHODS = 
{
  "-"  => "unary_minus",
  "~"  => "bitwise_not",
}

Instance Method Summary collapse

Methods inherited from Node

#always_returns?, #compile_as_copy_if_needed, #compile_statements, #compile_statements_inside_block, #compile_statements_with_whitespace, #creates_local_scope?, #needs_copy?, #optimize_last_statement, #optimize_next, #optimize_return, #remove_duplicate_imports, transfers_comments

Instance Method Details

#compile(context) ⇒ Object 



2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
 
# File 'lib/y2r/ast/ycp.rb', line 2542

def compile(context)
  if OPS_TO_OPS[name]
    Ruby::UnaryOperator.new(
      :op         => OPS_TO_OPS[name],
      :expression => child.compile(context)
    )
  elsif OPS_TO_METHODS[name]
    if never_nil?
      Ruby::UnaryOperator.new(
        :op         => OPS_TO_OPS_OPTIONAL[name],
        :expression => child.compile(context)
      )
    else
      Ruby::MethodCall.new(
        :receiver => Ruby::Variable.new(:name => "Ops"),
        :name     => OPS_TO_METHODS[name],
        :args     => [child.compile(context)],
        :block    => nil,
        :parens   => true
      )
    end
  else
    raise "Unknown unary operator: #{name.inspect}."
  end
end

#never_nil? ⇒ Boolean

Returns:

  • (Boolean) 


2570
2571
2572
 
# File 'lib/y2r/ast/ycp.rb', line 2570

def never_nil?
  return child.never_nil?
end