Class: RedParse::UnOpNode

Inherits:
ValueNode show all
Defined in:
lib/redparse/node.rb

Direct Known Subclasses

UnaryStarNode

Constant Summary

Constants included from FlattenedIvars

FlattenedIvars::EXCLUDED_IVARS

Instance Attribute Summary collapse

Attributes inherited from Node

#endline, #errors, #offset, #parent, #startline

Attributes included from Stackable::Meta

#boolean_identity_params, #identity_params

Instance Method Summary collapse

Methods inherited from Node

#+, #+@, #==, [], #[]=, #add_parent_links!, #begin_parsetree, create, #data, #deep_copy, #delete_extraneous_ivars!, #delete_linenums!, #depthwalk, #depthwalk_nodes, #error?, #evalable_inspect, #fixup_multiple_assignments!, #fixup_rescue_assignments!, #initialize_ivars, inline_symbols, #inspect, #lhs_unparse, #linerange, #lvars_defined_in, #merge_replacement_session, namelist, #negate, #original_brackets_assign, param_names, #parsetrees, #pretty_print, #prohibit_fixup, #replace_ivars_and_self, #replace_value, #rescue_parsetree, #to_parsetree, #to_parsetree_and_warnings, #unary, #walk, #xform_tree!

Methods included from Stackable::Meta

#build_exemplars, #enumerate_exemplars, #identity_param

Methods included from FlattenedIvars

#flattened_ivars, #flattened_ivars_equal?

Methods included from Stackable

#identity_name

Constructor Details

#initialize(op, val) ⇒ UnOpNode

Returns a new instance of UnOpNode.



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# File 'lib/redparse/node.rb', line 1654

def initialize(op,val)
  @offset||=op.offset rescue val.offset
  op=op.ident if op.respond_to? :ident
  /([&*])$/===op and op=$1+"@"
  /^(?:!|not)$/===op and 
    val.respond_to? :special_conditions! and 
      val.special_conditions!
  super(op,val)
end

Instance Attribute Details

#lvalue ⇒ Object 



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# File 'lib/redparse/node.rb', line 1668

def lvalue
#        return nil unless op=="*@"

  return @lvalue if defined? @lvalue
  @lvalue=true
end

Instance Method Details

#image ⇒ Object 



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# File 'lib/redparse/node.rb', line 1666

def image; "(#{op})" end

#lvalue_parsetree(o) ⇒ Object 



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# File 'lib/redparse/node.rb', line 1695

def lvalue_parsetree(o)
  parsetree(o)
end

#parsetree(o) ⇒ Object 



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# File 'lib/redparse/node.rb', line 1680

def parsetree(o)
  node=self
  node=node.val while UnOpNode===node and node.op=="+@"
  return node.parsetree(o) if LiteralNode&-{:val=>Integer|Float|Symbol}===node
  return node.parsetree(o) if StringNode&-{:char=>'/', :size=>1}===node

  case op
  when /^&/; [:block_arg, val.ident.to_sym]
  when "!","not"; [:not, val.rescue_parsetree(o)]
  when "defined?"; [:defined, val.parsetree(o)]
  else
    [:call, val.rescue_parsetree(o), op.to_sym]
  end
end

#to_lisp ⇒ Object 



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# File 'lib/redparse/node.rb', line 1676

def to_lisp
  "(#{op} #{val.to_lisp})"
end

#unparse(o = default_unparse_options) ⇒ Object 



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# File 'lib/redparse/node.rb', line 1699

def unparse o=default_unparse_options
  op=op()
  op=op.chomp "@"
  result=op
  result+=" " if /#{LETTER}/o===op or /^[+-]/===op && LiteralNode===val
  result+=val.unparse(o)
end