Class: Ruby2Ruby
- Inherits:
-
SexpProcessor
- Object
- SexpProcessor
- Ruby2Ruby
- Defined in:
- lib/ruby2ruby.rb
Constant Summary collapse
- VERSION =
'1.3.1'
- LINE_LENGTH =
78
- BINARY =
[:<=>, :==, :<, :>, :<=, :>=, :-, :+, :*, :/, :%, :<<, :>>, :**]
- ASSIGN_NODES =
Nodes that represent assignment and probably need () around them.
TODO: this should be replaced with full precedence support :/
[ :dasgn, :flip2, :flip3, :lasgn, :masgn, :attrasgn, :op_asgn1, :op_asgn2, :op_asgn_and, :op_asgn_or, :return, :if, # HACK ]
Instance Method Summary collapse
- #cond_loop(exp, name) ⇒ Object
-
#dthing_escape(type, lit) ⇒ Object
Utility Methods:.
- #indent(s) ⇒ Object
-
#initialize ⇒ Ruby2Ruby
constructor
A new instance of Ruby2Ruby.
- #parenthesize(exp) ⇒ Object
-
#process_alias(exp) ⇒ Object
Processors.
- #process_and(exp) ⇒ Object
-
#process_arglist(exp) ⇒ Object
custom made node.
- #process_args(exp) ⇒ Object
- #process_array(exp) ⇒ Object
- #process_attrasgn(exp) ⇒ Object
- #process_back_ref(exp) ⇒ Object
-
#process_begin(exp) ⇒ Object
TODO: figure out how to do rescue and ensure ENTIRELY w/o begin.
- #process_block(exp) ⇒ Object
- #process_block_pass(exp) ⇒ Object
- #process_break(exp) ⇒ Object
- #process_call(exp) ⇒ Object
- #process_case(exp) ⇒ Object
- #process_cdecl(exp) ⇒ Object
- #process_class(exp) ⇒ Object
- #process_colon2(exp) ⇒ Object
- #process_colon3(exp) ⇒ Object
- #process_const(exp) ⇒ Object
- #process_cvar(exp) ⇒ Object
- #process_cvasgn(exp) ⇒ Object
- #process_cvdecl(exp) ⇒ Object
- #process_defined(exp) ⇒ Object
- #process_defn(exp) ⇒ Object
- #process_defs(exp) ⇒ Object
- #process_dot2(exp) ⇒ Object
- #process_dot3(exp) ⇒ Object
- #process_dregx(exp) ⇒ Object
- #process_dregx_once(exp) ⇒ Object
- #process_dstr(exp) ⇒ Object
- #process_dsym(exp) ⇒ Object
- #process_dxstr(exp) ⇒ Object
- #process_ensure(exp) ⇒ Object
- #process_evstr(exp) ⇒ Object
- #process_false(exp) ⇒ Object
- #process_flip2(exp) ⇒ Object
- #process_flip3(exp) ⇒ Object
- #process_for(exp) ⇒ Object
- #process_gasgn(exp) ⇒ Object
- #process_gvar(exp) ⇒ Object
- #process_hash(exp) ⇒ Object
- #process_iasgn(exp) ⇒ Object
- #process_if(exp) ⇒ Object
- #process_iter(exp) ⇒ Object
- #process_ivar(exp) ⇒ Object
- #process_lasgn(exp) ⇒ Object
- #process_lit(exp) ⇒ Object
- #process_lvar(exp) ⇒ Object
- #process_masgn(exp) ⇒ Object
- #process_match(exp) ⇒ Object
- #process_match2(exp) ⇒ Object
- #process_match3(exp) ⇒ Object
- #process_module(exp) ⇒ Object
- #process_next(exp) ⇒ Object
- #process_nil(exp) ⇒ Object
- #process_not(exp) ⇒ Object
- #process_nth_ref(exp) ⇒ Object
- #process_op_asgn1(exp) ⇒ Object
- #process_op_asgn2(exp) ⇒ Object
- #process_op_asgn_and(exp) ⇒ Object
- #process_op_asgn_or(exp) ⇒ Object
- #process_or(exp) ⇒ Object
- #process_postexe(exp) ⇒ Object
- #process_redo(exp) ⇒ Object
- #process_resbody(exp) ⇒ Object
- #process_rescue(exp) ⇒ Object
- #process_retry(exp) ⇒ Object
- #process_return(exp) ⇒ Object
- #process_sclass(exp) ⇒ Object
- #process_scope(exp) ⇒ Object
- #process_self(exp) ⇒ Object
- #process_splat(exp) ⇒ Object
- #process_str(exp) ⇒ Object
- #process_super(exp) ⇒ Object
- #process_svalue(exp) ⇒ Object
- #process_to_ary(exp) ⇒ Object
- #process_true(exp) ⇒ Object
- #process_undef(exp) ⇒ Object
- #process_until(exp) ⇒ Object
- #process_valias(exp) ⇒ Object
- #process_when(exp) ⇒ Object
- #process_while(exp) ⇒ Object
- #process_xstr(exp) ⇒ Object
- #process_yield(exp) ⇒ Object
- #process_zsuper(exp) ⇒ Object
- #re_opt(options) ⇒ Object
-
#rewrite_attrasgn(exp) ⇒ Object
Rewriters:.
- #rewrite_ensure(exp) ⇒ Object
- #rewrite_resbody(exp) ⇒ Object
- #rewrite_rescue(exp) ⇒ Object
- #rewrite_svalue(exp) ⇒ Object
- #splat(sym) ⇒ Object
- #util_dthing(type, exp) ⇒ Object
- #util_module_or_class(exp, is_class = false) ⇒ Object
Constructor Details
#initialize ⇒ Ruby2Ruby
Returns a new instance of Ruby2Ruby.
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# File 'lib/ruby2ruby.rb', line 52 def initialize super @indent = " " self.auto_shift_type = true self.strict = true self.expected = String @calls = [] # self.debug[:defn] = /zsuper/ end |
Instance Method Details
#cond_loop(exp, name) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 865 def cond_loop(exp, name) cond = process(exp.shift) body = process(exp.shift) head_controlled = exp.shift body = indent(body).chomp if body code = [] if head_controlled then code << "#{name} #{cond} do" code << body if body code << "end" else code << "begin" code << body if body code << "end #{name} #{cond}" end code.join("\n") end |
#dthing_escape(type, lit) ⇒ Object
Utility Methods:
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# File 'lib/ruby2ruby.rb', line 938 def dthing_escape type, lit lit = lit.gsub(/\n/, '\n') case type when :dregx then lit.gsub(/(\A|[^\\])\//, '\1\/') when :dstr, :dsym then lit.gsub(/"/, '\"') when :dxstr then lit.gsub(/`/, '\`') else raise "unsupported type #{type.inspect}" end end |
#indent(s) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 1010 def indent(s) s.to_s.split(/\n/).map{|line| @indent + line}.join("\n") end |
#parenthesize(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 170 def parenthesize exp case self.context[1] when nil, :scope, :if, :iter, :resbody, :when, :while then exp else "(#{exp})" end end |
#process_alias(exp) ⇒ Object
Processors
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# File 'lib/ruby2ruby.rb', line 67 def process_alias(exp) parenthesize "alias #{process(exp.shift)} #{process(exp.shift)}" end |
#process_and(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 71 def process_and(exp) parenthesize "#{process exp.shift} and #{process exp.shift}" end |
#process_arglist(exp) ⇒ Object
custom made node
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# File 'lib/ruby2ruby.rb', line 75 def process_arglist(exp) # custom made node code = [] until exp.empty? do code << process(exp.shift) end code.join ', ' end |
#process_args(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 83 def process_args(exp) args = [] until exp.empty? do arg = exp.shift case arg when Symbol then args << arg when Array then case arg.first when :block then asgns = {} arg[1..-1].each do |lasgn| asgns[lasgn[1]] = process(lasgn) end args.each_with_index do |name, index| args[index] = asgns[name] if asgns.has_key? name end else raise "unknown arg type #{arg.first.inspect}" end else raise "unknown arg type #{arg.inspect}" end end return "(#{args.join ', '})" end |
#process_array(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 113 def process_array(exp) "[#{process_arglist(exp)}]" end |
#process_attrasgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 117 def process_attrasgn(exp) receiver = process exp.shift name = exp.shift args = exp.empty? ? nil : exp.shift case name when :[]= then rhs = process args.pop "#{receiver}[#{process(args)}] = #{rhs}" else name = name.to_s.sub(/=$/, '') if args && args != s(:arglist) then "#{receiver}.#{name} = #{process(args)}" end end end |
#process_back_ref(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 134 def process_back_ref(exp) "$#{exp.shift}" end |
#process_begin(exp) ⇒ Object
TODO: figure out how to do rescue and ensure ENTIRELY w/o begin
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# File 'lib/ruby2ruby.rb', line 139 def process_begin(exp) code = [] code << "begin" until exp.empty? src = process(exp.shift) src = indent(src) unless src =~ /(^|\n)(rescue|ensure)/ # ensure no level 0 rescues code << src end code << "end" return code.join("\n") end |
#process_block(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 151 def process_block(exp) result = [] exp << nil if exp.empty? until exp.empty? do code = exp.shift if code.nil? or code.first == :nil then result << "# do nothing\n" else result << process(code) end end result = parenthesize result.join "\n" result += "\n" unless result.start_with? "(" return result end |
#process_block_pass(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 179 def process_block_pass exp raise "huh?: #{exp.inspect}" if exp.size > 1 "&#{process exp.shift}" end |
#process_break(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 185 def process_break(exp) val = exp.empty? ? nil : process(exp.shift) # HACK "break" + (val ? " #{val}" : "") if val then "break #{val}" else "break" end end |
#process_call(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 195 def process_call(exp) receiver_node_type = exp.first.nil? ? nil : exp.first.first receiver = process exp.shift receiver = "(#{receiver})" if ASSIGN_NODES.include? receiver_node_type name = exp.shift args = [] # this allows us to do both old and new sexp forms: exp.push(*exp.pop[1..-1]) if exp.size == 1 && exp.first.first == :arglist @calls.push name in_context :arglist do until exp.empty? do arg_type = exp.first.sexp_type arg = process exp.shift next if arg.empty? strip_hash = (arg_type == :hash and not BINARY.include? name and (exp.empty? or exp.first.sexp_type == :splat)) wrap_arg = Ruby2Ruby::ASSIGN_NODES.include? arg_type arg = arg[2..-3] if strip_hash arg = "(#{arg})" if wrap_arg args << arg end end case name when *BINARY then "(#{receiver} #{name} #{args.join(', ')})" when :[] then receiver ||= "self" "#{receiver}[#{args.join(', ')}]" when :[]= then receiver ||= "self" rhs = args.pop "#{receiver}[#{args.join(', ')}] = #{rhs}" when :"-@" then "-#{receiver}" when :"+@" then "+#{receiver}" else args = nil if args.empty? args = "(#{args.join(', ')})" if args receiver = "#{receiver}." if receiver "#{receiver}#{name}#{args}" end ensure @calls.pop end |
#process_case(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 252 def process_case(exp) result = [] expr = process exp.shift if expr then result << "case #{expr}" else result << "case" end until exp.empty? pt = exp.shift if pt and pt.first == :when result << "#{process(pt)}" else code = indent(process(pt)) code = indent("# do nothing") if code =~ /^\s*$/ result << "else\n#{code}" end end result << "end" result.join("\n") end |
#process_cdecl(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 274 def process_cdecl(exp) lhs = exp.shift lhs = process lhs if Sexp === lhs unless exp.empty? then rhs = process(exp.shift) "#{lhs} = #{rhs}" else lhs.to_s end end |
#process_class(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 285 def process_class(exp) "#{exp.comments}class #{util_module_or_class(exp, true)}" end |
#process_colon2(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 289 def process_colon2(exp) "#{process(exp.shift)}::#{exp.shift}" end |
#process_colon3(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 293 def process_colon3(exp) "::#{exp.shift}" end |
#process_const(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 297 def process_const(exp) exp.shift.to_s end |
#process_cvar(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 301 def process_cvar(exp) "#{exp.shift}" end |
#process_cvasgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 305 def process_cvasgn(exp) "#{exp.shift} = #{process(exp.shift)}" end |
#process_cvdecl(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 309 def process_cvdecl(exp) "#{exp.shift} = #{process(exp.shift)}" end |
#process_defined(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 313 def process_defined(exp) "defined? #{process(exp.shift)}" end |
#process_defn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 317 def process_defn(exp) type1 = exp[1].first type2 = exp[2].first rescue nil if type1 == :args and [:ivar, :attrset].include? type2 then name = exp.shift case type2 when :ivar then exp.clear return "attr_reader #{name.inspect}" when :attrset then exp.clear return "attr_writer :#{name.to_s[0..-2]}" else raise "Unknown defn type: #{exp.inspect}" end end case type1 when :scope, :args then name = exp.shift args = process(exp.shift) args = "" if args == "()" body = [] until exp.empty? do body << indent(process(exp.shift)) end body = body.join("\n") return "#{exp.comments}def #{name}#{args}\n#{body}\nend".gsub(/\n\s*\n+/, "\n") else raise "Unknown defn type: #{type1} for #{exp.inspect}" end end |
#process_defs(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 351 def process_defs(exp) lhs = exp.shift var = [:self, :cvar, :dvar, :ivar, :gvar, :lvar].include? lhs.first name = exp.shift lhs = process(lhs) lhs = "(#{lhs})" unless var exp.unshift "#{lhs}.#{name}" process_defn(exp) end |
#process_dot2(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 363 def process_dot2(exp) "(#{process exp.shift}..#{process exp.shift})" end |
#process_dot3(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 367 def process_dot3(exp) "(#{process exp.shift}...#{process exp.shift})" end |
#process_dregx(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 377 def process_dregx(exp) = re_opt exp.pop if Fixnum === exp.last "/" << util_dthing(:dregx, exp) << "/#{}" end |
#process_dregx_once(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 382 def process_dregx_once(exp) process_dregx(exp) + "o" end |
#process_dstr(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 386 def process_dstr(exp) "\"#{util_dthing(:dstr, exp)}\"" end |
#process_dsym(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 390 def process_dsym(exp) ":\"#{util_dthing(:dsym, exp)}\"" end |
#process_dxstr(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 394 def process_dxstr(exp) "`#{util_dthing(:dxstr, exp)}`" end |
#process_ensure(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 398 def process_ensure(exp) body = process exp.shift ens = exp.shift ens = nil if ens == s(:nil) ens = process(ens) || "# do nothing" ens = "begin\n#{ens}\nend\n" if ens =~ /(^|\n)rescue/ body.sub!(/\n\s*end\z/, '') body = indent(body) unless body =~ /(^|\n)rescue/ return "#{body}\nensure\n#{indent ens}" end |
#process_evstr(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 411 def process_evstr(exp) exp.empty? ? '' : process(exp.shift) end |
#process_false(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 415 def process_false(exp) "false" end |
#process_flip2(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 419 def process_flip2(exp) "#{process(exp.shift)}..#{process(exp.shift)}" end |
#process_flip3(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 423 def process_flip3(exp) "#{process(exp.shift)}...#{process(exp.shift)}" end |
#process_for(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 427 def process_for(exp) recv = process exp.shift iter = process exp.shift body = exp.empty? ? nil : process(exp.shift) result = ["for #{iter} in #{recv} do"] result << indent(body ? body : "# do nothing") result << "end" result.join("\n") end |
#process_gasgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 439 def process_gasgn(exp) process_iasgn(exp) end |
#process_gvar(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 443 def process_gvar(exp) return exp.shift.to_s end |
#process_hash(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 447 def process_hash(exp) result = [] until exp.empty? lhs = process(exp.shift) rhs = exp.shift t = rhs.first rhs = process rhs rhs = "(#{rhs})" unless [:lit, :str].include? t # TODO: verify better! result << "#{lhs} => #{rhs}" end return "{ #{result.join(', ')} }" end |
#process_iasgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 463 def process_iasgn(exp) lhs = exp.shift if exp.empty? then # part of an masgn lhs.to_s else "#{lhs} = #{process exp.shift}" end end |
#process_if(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 472 def process_if(exp) = Ruby2Ruby::ASSIGN_NODES.include? exp.first.first c = process exp.shift t = process exp.shift f = process exp.shift c = "(#{c.chomp})" if c =~ /\n/ if t then unless then if f then r = "#{c} ? (#{t}) : (#{f})" r = nil if r =~ /return/ # HACK - need contextual awareness or something else r = "#{t} if #{c}" end return r if r and (@indent+r).size < LINE_LENGTH and r !~ /\n/ end r = "if #{c} then\n#{indent(t)}\n" r << "else\n#{indent(f)}\n" if f r << "end" r elsif f unless then r = "#{f} unless #{c}" return r if (@indent+r).size < LINE_LENGTH and r !~ /\n/ end "unless #{c} then\n#{indent(f)}\nend" else # empty if statement, just do it in case of side effects from condition "if #{c} then\n#{indent '# do nothing'}\nend" end end |
#process_iter(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 508 def process_iter(exp) iter = process exp.shift args = exp.shift args = (args == 0) ? '' : process(args) body = exp.empty? ? nil : process(exp.shift) b, e = if iter == "END" then [ "{", "}" ] else [ "do", "end" ] end iter.sub!(/\(\)$/, '') # REFACTOR: ugh result = [] result << "#{iter} {" result << " |#{args}|" if args if body then result << " #{body.strip} " else result << ' ' end result << "}" result = result.join return result if result !~ /\n/ and result.size < LINE_LENGTH result = [] result << "#{iter} #{b}" result << " |#{args}|" if args result << "\n" if body then result << indent(body.strip) result << "\n" end result << e result.join end |
#process_ivar(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 547 def process_ivar(exp) exp.shift.to_s end |
#process_lasgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 551 def process_lasgn(exp) s = "#{exp.shift}" s += " = #{process exp.shift}" unless exp.empty? s end |
#process_lit(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 557 def process_lit(exp) obj = exp.shift case obj when Range then "(#{obj.inspect})" else obj.inspect end end |
#process_lvar(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 567 def process_lvar(exp) exp.shift.to_s end |
#process_masgn(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 575 def process_masgn(exp) lhs = exp.shift rhs = exp.empty? ? nil : exp.shift case lhs.first when :array then lhs.shift lhs = lhs.map do |l| case l.first when :masgn then "(#{process(l)})" else process(l) end end when :lasgn then lhs = [ splat(lhs.last) ] when :splat then lhs = [ :"*" ] else raise "no clue: #{lhs.inspect}" end if context[1] == :iter and rhs then lhs << splat(rhs[1]) rhs = nil end unless rhs.nil? then t = rhs.first rhs = process rhs rhs = rhs[1..-2] if t == :array # FIX: bad? I dunno return "#{lhs.join(", ")} = #{rhs}" else return lhs.join(", ") end end |
#process_match(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 613 def process_match(exp) "#{process(exp.shift)}" end |
#process_match2(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 617 def process_match2(exp) lhs = process(exp.shift) rhs = process(exp.shift) "#{lhs} =~ #{rhs}" end |
#process_match3(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 623 def process_match3(exp) rhs = process(exp.shift) left_type = exp.first.sexp_type lhs = process(exp.shift) if ASSIGN_NODES.include? left_type then "(#{lhs}) =~ #{rhs}" else "#{lhs} =~ #{rhs}" end end |
#process_module(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 635 def process_module(exp) "#{exp.comments}module #{util_module_or_class(exp)}" end |
#process_next(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 639 def process_next(exp) val = exp.empty? ? nil : process(exp.shift) if val then "next #{val}" else "next" end end |
#process_nil(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 648 def process_nil(exp) "nil" end |
#process_not(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 652 def process_not(exp) "(not #{process exp.shift})" end |
#process_nth_ref(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 656 def process_nth_ref(exp) "$#{exp.shift}" end |
#process_op_asgn1(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 660 def process_op_asgn1(exp) # [[:lvar, :b], [:arglist, [:lit, 1]], :"||", [:lit, 10]] lhs = process(exp.shift) index = process(exp.shift) msg = exp.shift rhs = process(exp.shift) "#{lhs}[#{index}] #{msg}= #{rhs}" end |
#process_op_asgn2(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 670 def process_op_asgn2(exp) # [[:lvar, :c], :var=, :"||", [:lit, 20]] lhs = process(exp.shift) index = exp.shift.to_s[0..-2] msg = exp.shift rhs = process(exp.shift) "#{lhs}.#{index} #{msg}= #{rhs}" end |
#process_op_asgn_and(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 681 def process_op_asgn_and(exp) # a &&= 1 # [[:lvar, :a], [:lasgn, :a, [:lit, 1]]] exp.shift process(exp.shift).sub(/\=/, '&&=') end |
#process_op_asgn_or(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 688 def process_op_asgn_or(exp) # a ||= 1 # [[:lvar, :a], [:lasgn, :a, [:lit, 1]]] exp.shift process(exp.shift).sub(/\=/, '||=') end |
#process_or(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 695 def process_or(exp) "(#{process exp.shift} or #{process exp.shift})" end |
#process_postexe(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 699 def process_postexe(exp) "END" end |
#process_redo(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 703 def process_redo(exp) "redo" end |
#process_resbody(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 707 def process_resbody exp args = exp.shift body = process(exp.shift) || "# do nothing" name = args.lasgn true name ||= args.iasgn true args = process(args)[1..-2] args = " #{args}" unless args.empty? args += " => #{name[1]}" if name "rescue#{args}\n#{indent body}" end |
#process_rescue(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 720 def process_rescue exp body = process(exp.shift) unless exp.first.first == :resbody els = process(exp.pop) unless exp.last.first == :resbody body ||= "# do nothing" simple = exp.size == 1 && !exp.resbody.block resbodies = [] until exp.empty? do resbody = exp.shift simple &&= resbody[1] == s(:array) simple &&= resbody[2] != nil && resbody[2].node_type != :block resbodies << process(resbody) end if els then "#{indent body}\n#{resbodies.join("\n")}\nelse\n#{indent els}" elsif simple then resbody = resbodies.first.sub(/\n\s*/, ' ') "#{body} #{resbody}" else "#{indent body}\n#{resbodies.join("\n")}" end end |
#process_retry(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 746 def process_retry(exp) "retry" end |
#process_return(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 750 def process_return(exp) # HACK return "return" + (exp.empty? ? "" : " #{process exp.shift}") if exp.empty? then return "return" else return "return #{process exp.shift}" end end |
#process_sclass(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 760 def process_sclass(exp) "class << #{process(exp.shift)}\n#{indent(process(exp.shift))}\nend" end |
#process_scope(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 764 def process_scope(exp) exp.empty? ? "" : process(exp.shift) end |
#process_self(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 768 def process_self(exp) "self" end |
#process_splat(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 772 def process_splat(exp) if exp.empty? then "*" else "*#{process(exp.shift)}" end end |
#process_str(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 780 def process_str(exp) return exp.shift.dump end |
#process_super(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 784 def process_super(exp) args = [] until exp.empty? do args << process(exp.shift) end "super(#{args.join(', ')})" end |
#process_svalue(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 793 def process_svalue(exp) code = [] until exp.empty? do code << process(exp.shift) end code.join(", ") end |
#process_to_ary(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 801 def process_to_ary(exp) process(exp.shift) end |
#process_true(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 805 def process_true(exp) "true" end |
#process_undef(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 809 def process_undef(exp) "undef #{process(exp.shift)}" end |
#process_until(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 813 def process_until(exp) cond_loop(exp, 'until') end |
#process_valias(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 817 def process_valias(exp) "alias #{exp.shift} #{exp.shift}" end |
#process_when(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 821 def process_when(exp) src = [] if self.context[1] == :array then # ugh. matz! why not an argscat?!? val = process(exp.shift) exp.shift # empty body return "*#{val}" end until exp.empty? cond = process(exp.shift).to_s[1..-2] code = indent(process(exp.shift)) code = indent "# do nothing" if code =~ /\A\s*\Z/ src << "when #{cond} then\n#{code.chomp}" end src.join("\n") end |
#process_while(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 840 def process_while(exp) cond_loop(exp, 'while') end |
#process_xstr(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 844 def process_xstr(exp) "`#{process_str(exp)[1..-2]}`" end |
#process_yield(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 848 def process_yield(exp) args = [] until exp.empty? do args << process(exp.shift) end unless args.empty? then "yield(#{args.join(', ')})" else "yield" end end |
#process_zsuper(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 861 def process_zsuper(exp) "super" end |
#re_opt(options) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 371 def re_opt bits = (0..8).map { |n| [n] * 2**n } bits.delete 0 bits.map { |n| Regexp::CODES[n] }.join end |
#rewrite_attrasgn(exp) ⇒ Object
Rewriters:
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# File 'lib/ruby2ruby.rb', line 888 def rewrite_attrasgn exp if context.first(2) == [:array, :masgn] then exp[0] = :call exp[2] = exp[2].to_s.sub(/=$/, '').to_sym end exp end |
#rewrite_ensure(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 897 def rewrite_ensure exp exp = s(:begin, exp) unless context.first == :begin exp end |
#rewrite_resbody(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 902 def rewrite_resbody exp raise "no exception list in #{exp.inspect}" unless exp.size > 2 && exp[1] raise exp[1].inspect if exp[1][0] != :array # for now, do nothing, just check and freak if we see an errant structure exp end |
#rewrite_rescue(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 909 def rewrite_rescue exp complex = false complex ||= exp.size > 3 complex ||= exp.resbody.block complex ||= exp.find_nodes(:resbody).any? { |n| n[1] != s(:array) } complex ||= exp.find_nodes(:resbody).any? { |n| n.last.nil? } complex ||= exp.find_nodes(:resbody).any? { |n| n[2] and n[2].node_type == :block } handled = context.first == :ensure exp = s(:begin, exp) if complex unless handled exp end |
#rewrite_svalue(exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 924 def rewrite_svalue(exp) case exp.last.first when :array s(:svalue, *exp[1][1..-1]) when :splat exp else raise "huh: #{exp.inspect}" end end |
#splat(sym) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 571 def splat(sym) :"*#{sym}" end |
#util_dthing(type, exp) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 952 def util_dthing(type, exp) s = [] # first item in sexp is a string literal s << dthing_escape(type, exp.shift) until exp.empty? pt = exp.shift case pt when Sexp then case pt.first when :str then s << dthing_escape(type, pt.last) when :evstr then s << '#{' << process(pt) << '}' # do not use interpolation here else raise "unknown type: #{pt.inspect}" end else raise "unhandled value in d-thing: #{pt.inspect}" end end s.join end |
#util_module_or_class(exp, is_class = false) ⇒ Object
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# File 'lib/ruby2ruby.rb', line 978 def util_module_or_class(exp, is_class=false) result = [] name = exp.shift name = process name if Sexp === name result << name if is_class then superk = process(exp.shift) result << " < #{superk}" if superk end result << "\n" body = [] begin code = process(exp.shift) body << code.chomp unless code.nil? or code.chomp.empty? end until exp.empty? unless body.empty? then body = indent(body.join("\n\n")) + "\n" else body = "" end result << body result << "end" result.join end |