Class: Nendo::Evaluator

Inherits:
Object
  • Object
show all
Includes:
BuiltinFunctions
Defined in:
lib/nendo/ruby/evaluator.rb,
lib/nendo/ruby/optimized_func.rb

Overview

Translate S expression to Ruby expression and Evaluation

Constant Summary collapse

EXEC_TYPE_NORMAL = 
1
EXEC_TYPE_ANONYMOUS = 
2
EXEC_TYPE_TAILCALL = 
3
LINENO_TIMES = 
100
INITIAL_LINENO =

header comment of compiled code

6

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from BuiltinFunctions

#__ASMARK, #__ASMARKFILE_ASMARK, #__ASMARKLINE_ASMARK, #__ASMARK_ARGS0, #__ASMARK_ARGS1, #__ASMARK_ARGS2, #__ASMARK_ARGS3, #__ASMARKruntime_MIMARKcheck_ASMARK, #__EQMARK, #__GTMARK, #__GTMARK_EQMARK, #__LTMARK, #__LTMARK_EQMARK, #__MIMARK, #__MIMARK_ARGS0, #__MIMARK_ARGS1, #__MIMARK_ARGS2, #__MIMARK_ARGS3, #__PAMARK, #__PAMARKlist_QUMARK, #__PAMARKraise, #__PLMARK, #__PLMARK_ARGS0, #__PLMARK_ARGS1, #__PLMARK_ARGS2, #__PLMARK_ARGS3, #__SLMARK, #__assertFlat, #__assertList, #_apply1, #_car, #_cdr, #_cons, #_core_MIMARKsyntax_QUMARK, #_display, #_eq_QUMARK, #_equal_QUMARK, #_eqv_QUMARK, #_exit, #_ge_QUMARK, #_global_MIMARKvariables, #_gt_QUMARK, #_hash_MIMARKtable_MIMARKexist_QUMARK, #_hash_MIMARKtable_MIMARKget, #_hash_MIMARKtable_MIMARKput_EXMARK, #_integer_QUMARK, #_intern, #_keyword_MIMARK_GTMARKstring, #_keyword_QUMARK, #_le_QUMARK, #_length, #_list, #_lt_QUMARK, #_macro_QUMARK, #_macroexpand_MIMARK1, #_make_MIMARKkeyword, #_make_MIMARKrecord_MIMARKtype, #_make_MIMARKvalues, #_modulo, #_newline, #_nil_QUMARK, #_not, #_null_QUMARK, #_number_QUMARK, #_pair_QUMARK, #_print, #_printf, #_procedure_QUMARK, #_quotient, #_range, #_read, #_read_MIMARKfrom_MIMARKstring, #_remainder, #_require, #_reverse, #_set_MIMARKcar_EXMARK, #_set_MIMARKcdr_EXMARK, #_sprintf, #_string_MIMARK_GTMARKsymbol, #_string_MIMARKjoin, #_string_QUMARK, #_symbol_MIMARK_GTMARKstring, #_symbol_QUMARK, #_syntax_QUMARK, #_to_MIMARKarr, #_to_MIMARKi, #_to_MIMARKlist, #_to_MIMARKs, #_to_arr, #_to_i, #_to_list, #_to_s, #_uniq, #_values_MIMARKvalues, #_values_QUMARK, #_vector_MIMARKset_EXMARK, #_write, #_write_MIMARKto_MIMARKstring

Constructor Details

#initialize(core, debug = false) ⇒ Evaluator

Returns a new instance of Evaluator.



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# File 'lib/nendo/ruby/evaluator.rb', line 48

def initialize( core, debug = false )
  @compiledLineno = INITIAL_LINENO
  @compiledLinenoStack = []
  @core    = core
  @indent  = "  "
  @binding = binding
  @debug   = debug
  @trace_debug = false
  @lexicalVars = []
  @syntaxHash = {}
  @optimize_level = 2
  @runtimeCheck = true
  @backtrace = []
  @backtrace_last = ""
  @displayErrorsFlag = true;
  @char_table_lisp_to_ruby = {
    # list     (! $ % & * + - . / : < = > ? @ ^ _ ~ ...)
    '!'   => '_EXMARK',
    '$'   => '_DOMARK',
    '%'   => '_PAMARK',
    '&'   => '_ANMARK',
    '*'   => '_ASMARK',
    '+'   => '_PLMARK',
    '-'   => '_MIMARK',
    # '.'
    '/'   => '_SLMARK',
    ':'   => '_COMARK',
    '<'   => '_LTMARK',
    '='   => '_EQMARK',
    '>'   => '_GTMARK',
    '?'   => '_QUMARK',
    '@'   => '_ATMARK',
    '^'   => '_NKMARK',
    # '_'
    '~'   => '_CHMARK',
    '...' => '_DOTDOTDOT',
  }
  @char_table_ruby_to_lisp = @char_table_lisp_to_ruby.invert

  @core_syntax_list = [ :quote, :"syntax-quote", :if , :begin , :lambda , :macro , :"&block" , :"%let" , :letrec , :define, :set!, :error, :"%syntax", :"define-syntax", :"let-syntax", :"%guard" ]
  @core_syntax_hash = Hash.new
  @core_syntax_list.each { |x|
    renamed = ("/nendo/core/" + x.to_s).intern
    @core_syntax_hash[ x ] = renamed
  }

  # toplevel binding
  @global_lisp_binding = Hash.new

  # initialize builtin functions as Proc objects
  rubyExp = self.methods.select { |x|
    x.to_s.match( /^_/ )
  }.map { |name|
    [
     defMethodStr( name, false ),
     sprintf( "@%s                        = self.method( :%s        ).to_proc", name, name ),
     sprintf( "@global_lisp_binding['%s'] = self.method( :%s_METHOD ).to_proc", name, name ),
    ].join( " ; " )
  }.join( " ; " )
  eval( rubyExp, @binding )

  # initialize builtin syntax as LispCoreSyntax
  rubyExp = @core_syntax_hash.map { |k,v|
    name1 = toRubySymbol( k )
    name2 = toRubySymbol( v )
    [ sprintf( "@%s                        = LispCoreSyntax.new( :\"%s\" ) ", name1, k ),
      sprintf( "@global_lisp_binding['%s'] = @%s ", name1, name1 ),
      sprintf( "@%s                        = @%s ", name2, name1 ),
      sprintf( "@global_lisp_binding['%s'] = @%s ", name1, name2 ) ].join( " ; " )
  }.join( " ; " )
  eval( rubyExp, @binding )

  # reset gensym counter
  @gensym_counter = 0

  # call depth counter
  @call_depth     = 0
  @call_counters  = Hash.new

  # compiled ruby code
  #  { 'filename1' => [ 'code1' 'code2' ... ],
  #    'filename2' => [ 'code1' 'code2' ... ], ... }
  @compiled_code    = Hash.new
  @source_info_hash = Hash.new

  global_lisp_define( toRubySymbol( "%compile-phase-functions" ), Cell.new())
  load_path = $LOAD_PATH + [ File.dirname(__FILE__) ]
  global_lisp_define( toRubySymbol( "*load-path*"     ), load_path.to_list )
  global_lisp_define( toRubySymbol( "*nendo-version*" ), Nendo::Core.version )
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 303

def method_missing( name, *args )
  if @global_lisp_binding[name].is_a? Proc
    @global_lisp_binding[name].call( args[0], args[1], args[2] )
  else
    callProcedure( name, args[0], args[1], args[2] )
  end
end

Instance Attribute Details

#runtimeCheck ⇒ Object

Returns the value of attribute runtimeCheck.



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# File 'lib/nendo/ruby/evaluator.rb', line 46

def runtimeCheck
  @runtimeCheck
end

Instance Method Details

#__evalSyntaxRules(rules, lexicalVars) ⇒ Object

eval (syntax-rules …) sexp

return:

(%syntax-rules
 ((v1 <<@syntaxHash's key1>>)
  (v2 <<@syntaxHash's key2>>)
  body))

example:
(%syntax-rules
 ((v1 "x = 10 // (+ x v1)")
  (v2 "y = 20 // (+ y v2)"))
 (+ v1 v2))



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# File 'lib/nendo/ruby/evaluator.rb', line 939

def __evalSyntaxRules( rules, lexicalVars )
  if :"%syntax-rules" == rules.car
    rules.second
  else
    lexvars = lexicalVars.select { |x|
      if _symbol_MIMARKinclude_QUMARK( rules, x[0].intern )
        x
      elsif lexicalVars.find {|y| _symbol_MIMARKinclude_QUMARK( y[1], x[0].intern ) }
        x
      else
        false
      end
    }

    __setupLexicalScopeVariables( lexvars )
    keyStr = lexvars.map {|z|
      z[0].to_s + " / " +  write_to_string( z[1] )
    }.join( " / " )
    keyStr += " // " + write_to_string( rules )
    if @syntaxHash.has_key?( keyStr )
      true
    else
      @syntaxHash[ keyStr ] = [ lexvars,
        self.lispEval( rules, "dynamic syntax-rules sexp (no source) ", 1 ) ]
    end
    __setupLexicalScopeVariables( [] )
    keyStr
  end
end

#__expandSyntaxRules(rules, syntaxArray, lexicalVars) ⇒ Object

expand (syntax-rules …) => (%syntax-rules …)



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# File 'lib/nendo/ruby/evaluator.rb', line 904

def __expandSyntaxRules( rules, syntaxArray, lexicalVars )
  if :"%syntax-rules" == rules.car
    rules
  else
    ellipse = rules.second
    pattern_body_list = rules.cdr.cdr

    lst = []
    lst << :"syntax-rules"
    lst << ellipse
    pattern_body_list.each {|xx|
      pattern_body = xx.car
      pattern = pattern_body.first
      body = pattern_body.second
      new_pattern_body = [ pattern, macroexpandEngine( body, syntaxArray, lexicalVars ) ].to_list
      lst << new_pattern_body
    }
    lst.to_list
  end
end

#__macroexpandEngine(sexp, syntaxArray, lexicalVars) ⇒ Object

args:

syntaxArray ... let-syntax's identifiers
                [
                   [ identifier-name, key of @syntaxHash, sexp of (syntax-rules ...), frame_of_let-syntax ],
                     .
                     .
                ]
lexicalVars ... let's identifiers
                [
                   [ identifier-name, macroexpandEngine( let's body ) ],
                ]



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# File 'lib/nendo/ruby/evaluator.rb', line 983

def __macroexpandEngine( sexp, syntaxArray, lexicalVars )
  sexp == castParsedSymbol( sexp )
  case sexp
  when Cell
    car = castParsedSymbol( sexp.car )
    if :quote == car or :"syntax-quote" == car or @core_syntax_hash[ :quote ] == car or @core_syntax_hash[ :"syntax-quote" ] == car
      sexp
    elsif :"%let" == car or :letrec == car or @core_syntax_hash[ :"%let" ] == car or @core_syntax_hash[ :letrec ] == car
      # catch lexical identifiers of `let' and `letrec'.
      arr = sexp.second.map { |x|
        [ castParsedSymbol( x.car.car ), macroexpandEngine( x.car.cdr, syntaxArray, lexicalVars ) ]
      }
      lst = arr.map {|x| Cell.new( x[0], x[1] ) }.to_list
      ret = Cell.new( car,
                 Cell.new( lst,
                      macroexpandEngine( sexp.cdr.cdr, syntaxArray, lexicalVars + arr )))
      ret
    elsif :"let-syntax" == car
      sexp.second.each {|x|
        if not x.car.second.is_a? Cell
          raise SyntaxError, "Error: let-syntax get only '((name (syntax-rules ...)))' form but got: " + write_to_string( x )
        elsif not ( castParsedSymbol( x.car.second.first ) == :"syntax-rules" or castParsedSymbol( x.car.second.first ) == :"%syntax-rules")
          raise SyntaxError, "Error: let-syntax get only '((name (syntax-rules ...)))' form but got: " + write_to_string( x )
        end
      }
      arr_tmp = sexp.second.map { |x|
        [ castParsedSymbol( x.car.first ), castParsedSymbol( __expandSyntaxRules( x.car.second, syntaxArray, lexicalVars )) ]
      }
      arr = arr_tmp.map {|x|
        [ castParsedSymbol( x[0] ), castParsedSymbol( __evalSyntaxRules( x[1], lexicalVars )), castParsedSymbol( x[1] ), castParsedSymbol( lexicalVars ) ]
      }

      # trial (expand recursively)
      arr_tmp = arr.map { |x|
        [ castParsedSymbol( x[0] ), castParsedSymbol( __expandSyntaxRules( x[2], syntaxArray + arr, lexicalVars )) ]
      }
      arr = arr_tmp.map {|x|
        [ castParsedSymbol( x[0] ), castParsedSymbol( __evalSyntaxRules( x[1], lexicalVars )), castParsedSymbol( x[1] ), castParsedSymbol( lexicalVars ) ]
      }

      # keywords = ((let-syntax-keyword ( let-syntax-body ))
      #             (let-syntax-keyword ( let-syntax-body ))
      #             ..)
      newKeywords = arr.map { |e|
        [ castParsedSymbol(e[0]), [ :"%syntax-rules", e[1]].to_list ].to_list
      }.to_list

      ret = Cell.new( :"let-syntax",
                 Cell.new( newKeywords, macroexpandEngine( sexp.cdr.cdr, syntaxArray + arr, lexicalVars )))

      ret
    else
      car = castParsedSymbol( car )
      sym = toRubySymbol( car.to_s )
      newSexp = sexp
      if isRubyInterface( sym )
        # do nothing
        sexp
      elsif _symbol_QUMARK( car ) and eval( sprintf( "(defined? @%s and LispMacro == @%s.class)", sym,sym ), @binding )
        eval( sprintf( "@__macro = @%s", sym ), @binding )
        newSexp = trampCall( callProcedure( nil, sym, @__macro, sexp.cdr.to_arr ))
      elsif _symbol_QUMARK( car ) and eval( sprintf( "(defined? @%s and LispSyntax == @%s.class)", sym,sym ), @binding )
        # expected input is
        #   (syntaxName arg1 arg2 ...)
        # will be transformed
        #   (syntaxName (syntaxName arg1 arg2 ...) () (global-variables))
        eval( sprintf( "@__syntax = @%s", sym ), @binding )
        newSexp = trampCall( callProcedure( nil, sym, @__syntax, [ sexp, Cell.new(), _global_MIMARKvariables( ) ] ))
      elsif _symbol_QUMARK( car ) and syntaxArray.map {|arr|
          arr[0].intern
        }.include?( car.intern )
        # lexical macro expandeding
        symbol_and_syntaxObj = syntaxArray.reverse.find {|arr|
          car == castParsedSymbol( arr[0] )
        }
        keys    = syntaxArray.reverse.map { |arr| castParsedSymbol( arr[0] ) }
        if not symbol_and_syntaxObj
          raise "can't find valid syntaxObject"
        end
        vars       = symbol_and_syntaxObj[3].map { |arr| castParsedSymbol( arr[0] ) }
        lexvars    = @syntaxHash[ symbol_and_syntaxObj[1] ][0]
        lispSyntax = @syntaxHash[ symbol_and_syntaxObj[1] ][1]
        newSexp = trampCall( callProcedure( nil, castParsedSymbol( symbol_and_syntaxObj[0] ), lispSyntax, [
                                              sexp,
                                              Cell.new(),
                                              (_global_MIMARKvariables( ).to_arr + keys + vars).to_list ] ))
        newSexp = __wrapNestedLet( newSexp, __removeSameLexicalScopeVariables( lexicalVars + lexvars ))
      end
      if _equal_QUMARK( newSexp, sexp )
        sexp.map { |x|
          if x.car.is_a? Cell
            macroexpandEngine( x.car, syntaxArray, lexicalVars )
          else
            x.car
          end
        }.to_list( sexp.lastAtom, sexp.getLastAtom )
      else
        @macroExpandCount -= 1
        newSexp
      end
    end
  else
    sexp
  end
end

#__PAMARKexport_MIMARKto_MIMARKruby(origname, pred) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1378

def __PAMARKexport_MIMARKto_MIMARKruby( origname, pred )
  if toRubySymbol( origname ) != ("_" + origname)
    raise ArgumentError, "Error: %export-to-ruby requires function name in ruby method naming rule."
  end
  if not _procedure_QUMARK( pred )
    raise ArgumentError, "Error: %export-to-ruby requires 'pred' as a Proc instance."
  end
  if 0 > pred.arity
    raise ArgumentError, "Error: %export-to-ruby requires only a function that have fixed length argument."
  end
  if self.methods.include?( origname.intern ) or @core.methods.include?( origname.intern )
    raise RuntimeError, "Error: %export-to-ruby: Nendo::Core." + origname + " method was already deifned."
  end

  argsStr = (1..(pred.arity)).map { |n| "arg" + n.to_s }.join( "," )
  str = [ "def self." + origname + "(" + argsStr + ")",
          sprintf( "  trampCall( callProcedure( nil, '%s', @_%s, [ " + argsStr + " ] )) ",
                   origname, origname ),
          "end",
          ";",
          "def @core." + origname + "(" + argsStr + ")",
          "  @evaluator." + origname + "(" + argsStr + ") ",
          "end"
        ].join
  eval( str, @binding )
  true
end

#__PAMARKload(filename) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1293

def __PAMARKload( filename )
  pushCompiledLineno(@compiledLineno)
  @compiledLineno = INITIAL_LINENO
  printer = Printer.new( @debug )
  open( filename, "r:utf-8" ) {|f|
    reader = Reader.new( f, filename, false )
    while true
      lineno = reader.lineno
      s = reader._read
      if s[1] # EOF?
        break
      elsif Nil != s[0].class
        printf( "\n          readExp=<<< %s >>>\n", printer._print(s[0]) ) if @debug
        self.lispEval( s[0], reader.sourcefile, lineno )
      end
    end
  }
  forward_gensym_counter()
  @compiledLineno = popCompiledLineno()
end

#__PAMARKload_MIMARKcompiled_MIMARKcode(filename) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1319

def __PAMARKload_MIMARKcompiled_MIMARKcode( filename )
  open( filename, "r:utf-8" ) { |f|
    eval( f.read, @binding, filename, 1 )
  }
  forward_gensym_counter()
end

#__removeSameLexicalScopeVariables(frame) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 865

def __removeSameLexicalScopeVariables( frame )
  frame.select {|x|
    # search same varname and different value
    found = frame.any? {|y|
      x[0] == y[0] and (not _equal_QUMARK( x[1], y[1] ))
    }
    if found
      x
    else
      false
    end
  }
end

#__setupLexicalScopeVariables(lexicalVars) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1406

def __setupLexicalScopeVariables( lexicalVars )
  @lexicalVars = lexicalVars.clone
end

#__wrapNestedLet(sexp, lexicalVars) ⇒ Object

warp sexp by lexicalVars



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# File 'lib/nendo/ruby/evaluator.rb', line 852

def __wrapNestedLet( sexp, lexicalVars )
  if 0 == lexicalVars.size
    sexp
  else
    elem  = lexicalVars.shift
    Cell.new( :"%let",
         Cell.new(
              Cell.new(
                   Cell.new( elem[0], elem[1] )),
              Cell.new( __wrapNestedLet( sexp, lexicalVars ) )))
  end
end

#_clean_MIMARKcompiled_MIMARKcode ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1326

def _clean_MIMARKcompiled_MIMARKcode
  @compiled_code = Hash.new
end

#_disable_MIMARKidebug ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1347

def _disable_MIMARKidebug()
  @debug = false
end

#_disable_MIMARKtrace ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1353

def _disable_MIMARKtrace()
  @trace_debug = false
end

#_enable_MIMARKidebug ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1344

def _enable_MIMARKidebug()
  @debug = true
end

#_enable_MIMARKtrace ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1350

def _enable_MIMARKtrace()
  @trace_debug = true
end

#_eval(sexp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1340

def _eval( sexp )
  self.lispEval( sexp, "dynamic S-expression ( no source )", 1 )
end

#_gensym ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 183

def _gensym( )
  @gensym_counter += 1
  filename = if @lastSourcefile.is_a? String
               Digest::SHA1.hexdigest( @lastSourcefile )
             else
               ""
             end
  sprintf( "__gensym__%s_%d", filename, @gensym_counter ).intern
end

#_get_MIMARKcompiled_MIMARKcode ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1330

def _get_MIMARKcompiled_MIMARKcode
  @compiled_code
  ret = Hash.new
  @compiled_code.each_key { |key|
    ret[key] = @compiled_code[key].to_list
    ret[key]
  }
  ret.to_list
end

#_get_MIMARKoptimize_MIMARKlevel ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1359

def _get_MIMARKoptimize_MIMARKlevel()
  self.getOptimizeLevel
end

#_get_MIMARKsource_MIMARKinfo(varname) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1363

def _get_MIMARKsource_MIMARKinfo( varname )
  info = @source_info_hash[ varname.to_s ]
  if info
    [
     Cell.new( "varname",           info.varname ),
     Cell.new( "sourcefile",        info.sourcefile ),
     Cell.new( "lineno",            info.lineno ),
     Cell.new( "source",            info.source_sexp ),
     Cell.new( "expanded",          info.expanded_sexp ),
     Cell.new( "compiled_str",      info.compiled_str ) ].to_list
  else
    raise NameError, sprintf( "Error: not found variable [%s]. \n", varname.to_s )
  end
end

#_load_MIMARKcompiled_MIMARKcode_MIMARKfrom_MIMARKstring(rubyExp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1314

def _load_MIMARKcompiled_MIMARKcode_MIMARKfrom_MIMARKstring( rubyExp )
  eval( rubyExp, @binding )
  forward_gensym_counter()
end

#_make_MIMARKsyntactic_MIMARKclosure(mac_env, use_env, identifier) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1410

def _make_MIMARKsyntactic_MIMARKclosure( mac_env, use_env, identifier )
  if _pair_QUMARK( identifier )
    if :"syntax-quote" == castParsedSymbol( identifier.car )
      identifier
    else
      raise TypeError, "make-syntactic-closure requires symbol or (syntax-quote sexp) only. but got: " + write_to_string( identifier )
    end
  elsif _symbol_QUMARK( identifier )
    # pp [ "identifier: ", identifier, "include?=", mac_env.to_arr.include?( identifier.intern ) ]
    # pp [ "mac_env: ",    mac_env.to_arr ]
    if mac_env.to_arr.include?( identifier.intern )
      found = @lexicalVars.find { |x| identifier == x[0] }
      if found
        lexvars = @lexicalVars.clone
        __wrapNestedLet( identifier, lexvars )
      else
        identifier
      end
    else
      SyntacticClosure.new( identifier, (toRubySymbol( identifier ) + _gensym( ).to_s).intern )
    end
  else
    raise TypeError, "make-syntactic-closure requires symbol or (syntax-quote sexp) type."
  end
end

#_set_MIMARKoptimize_MIMARKlevel(level) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1356

def _set_MIMARKoptimize_MIMARKlevel(level)
  self.setOptimizeLevel( level )
end

#_strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword(sexp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1457

def _strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword( sexp )
  case sexp
  when Cell
    if _null_QUMARK( sexp )
      sexp
    else
      car = sexp.car
      if :"quote" == car or @core_syntax_hash[ :"quote" ] == car
        sexp
      elsif :"let-syntax" == car or @core_syntax_hash[ :"let-syntax" ] == car
        Cell.new( :begin,
             _strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword( sexp.cdr.cdr ))
      else
        Cell.new(
             _strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword( sexp.car ),
             _strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword( sexp.cdr ))
      end
    end
  else
    sexp
  end
end

#_strip_MIMARKsyntactic_MIMARKclosures(sexp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1480

def _strip_MIMARKsyntactic_MIMARKclosures( sexp )
  case sexp
  when Cell
    if _null_QUMARK( sexp )
      sexp
    else
      Cell.new(
             _strip_MIMARKsyntactic_MIMARKclosures( sexp.car ),
             _strip_MIMARKsyntactic_MIMARKclosures( sexp.cdr ))
    end
  else
    if sexp.is_a? SyntacticClosure
      sexp.intern
    else
      sexp
    end
  end
end

#_strip_MIMARKsyntax_MIMARKquote(sexp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1436

def _strip_MIMARKsyntax_MIMARKquote( sexp )
  case sexp
  when Cell
    if _null_QUMARK( sexp )
      sexp
    else
      car = sexp.car
      car = castParsedSymbol( car )
      if :"syntax-quote" == car or @core_syntax_hash[ :"syntax-quote" ] == car
        Cell.new( :quote, sexp.cdr )
      else
        Cell.new(
             _strip_MIMARKsyntax_MIMARKquote( sexp.car ),
             _strip_MIMARKsyntax_MIMARKquote( sexp.cdr ))
      end
    end
  else
    sexp
  end
end

#_symbol_MIMARKinclude_QUMARK(sexp, sym) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1499

def _symbol_MIMARKinclude_QUMARK( sexp, sym )
  case sexp
  when Cell
    if _null_QUMARK( sexp )
      false
    else
      _symbol_MIMARKinclude_QUMARK( sexp.car, sym ) or _symbol_MIMARKinclude_QUMARK( sexp.cdr, sym )
    end
  else
    if _symbol_QUMARK( sexp )
      sym.intern == sexp.intern
    else
      false
    end
  end
end

#adjustLineno(target_lineno, compiledLineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1104

def adjustLineno( target_lineno, compiledLineno )
  str = ""
  if compiledLineno < target_lineno
    while compiledLineno < target_lineno
      str += "\n"
      compiledLineno += 1
    end
  end
  return str
end

#apply(car, cdr, sourcefile, lineno, locals, sourceInfo, execType) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 643

def apply( car, cdr, sourcefile, lineno, locals, sourceInfo, execType )
  cdr.each { |x|
    if Cell == x.class
      x.car = translate( x.car, locals, sourceInfo )
    end
  }
  execFunc( car, cdr, sourcefile, lineno, locals, sourceInfo, execType )
end

#callProcedure(rubysym, origname, pred, args) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 320

def callProcedure( rubysym, origname, pred, args )
  if pred.nil?
    raise RuntimeError, sprintf( "Error: function `%s' is undefined.", origname )
  end

  if @runtimeCheck
    if @call_counters.has_key?( origname )
      @call_counters[ origname ] += 1
    else
      @call_counters[ origname ]  = 1
    end
  end

  result = pred.call( *toRubyArgument( origname, pred, args ))

  if @runtimeCheck
    @call_counters[ origname ]   -= 1
  end

  result
end

#castParsedSymbol(arg) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1089

def castParsedSymbol( arg )
  if arg.class == ParsedSymbol
    arg.intern
  else
    arg
  end
end

#defMethodStr(name, _log) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 174

def defMethodStr( name, _log )
  [ "def self." + name.to_s + "_METHOD( origname, pred, args ) ",
    "  lispMethodEntry( origname, " + _log.to_s + " ) ; ",
    "  ret = callProcedure( '" + name.to_s + "', origname, pred, args ) ;",
    "  lispMethodExit( origname,  " + _log.to_s + " ) ; ",
    "  return ret ",
    "end" ].join
end

#delayCall(rubysym, origname, pred, args) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 311

def delayCall( rubysym, origname, pred, args )
  case @optimize_level
  when 0 # no optimize
    callProcedure( rubysym, origname, pred, args )
  else # tail call optimization
    DelayedCallPacket.new( rubysym, origname, pred, args )
  end
end

#displayBacktrace(exception) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1184

def displayBacktrace( exception )
  if @displayErrorsFlag
    STDERR.printf("-------------- Nendo backtrace ---------------\n")
    STDERR.printf("%s\n",exception.to_s)
    exception.backtrace.each {|str|
      line = normalizeBacktrace(str)
      if line
        STDERR.printf("	from %s\n",line)
      end
    }
    STDERR.printf("\n")
    STDERR.printf("-------------- Ruby  backtrace ---------------\n")
  end
end

#displayTopOfCalls(exception) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1169

def displayTopOfCalls( exception )
  if @displayErrorsFlag
    STDERR.puts( "\n  <<< Top of calls >>>" )
    strs = []
    @call_counters.each_key { |funcname|
      if 0 < @call_counters[ funcname ]
        strs << sprintf( "  %7d : %-20s", @call_counters[ funcname ], funcname )
      end
    }
    strs.sort.reverse.each { |str|
      STDERR.puts( str )
    }
  end
end

#embedBacktraceInfo(sourcefile, lineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 363

def embedBacktraceInfo( sourcefile, lineno )
  str = sourcefile + ":" + lineno.to_s
  if @backtrace_last != str
    @backtrace << str
    if ( 10 < @backtrace.size )
      @backtrace.shift
    end
    #p @backtrace
  end
  @backtrace_last = str
end

#errorMessageOf_toRubyArgument(origname, no, req, got) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 254

def errorMessageOf_toRubyArgument( origname, no, req, got )
  sprintf( "Error: [%s] wrong number of arguments for closure `%s' (requires %d, but got %d)", no, origname, req, got )
end

#execFunc(funcname, args, sourcefile, lineno, locals, sourceInfo, execType) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 392

def execFunc( funcname, args, sourcefile, lineno, locals, sourceInfo, execType )
  funcname = castParsedSymbol( funcname )
  if isDefines( funcname )
    ar = args.cdr.map { |x| x.car }
    variable_sym = toRubySymbol( args.car.to_s.sub( /^:/, "" ))
    global_cap = locals.flatten.include?( variable_sym.split( /[.]/ )[0] ) ? nil : "@"
    if global_cap and sourceInfo
      sourceInfo.setVarname( toLispSymbol( variable_sym ))
    end
    [ "begin ",
      makeComment("#execFunc"),
      [
       if global_cap
         [
          defMethodStr( variable_sym, true ),
          sprintf( "@global_lisp_binding['%s'] = self.method( :%s_METHOD )", variable_sym, variable_sym )
         ]
       else
         #kiyoka
         ""
       end,
       makeComment(sprintf("#execFunc(funcname=%s)",funcname)),
       sprintf( "%s%s = ", global_cap, variable_sym ),
       "trampCall(", [ ar ], ")"],
      "end"
    ]
  elsif :error == funcname or  @core_syntax_hash[ :error ] == funcname
    arr = if args.length < 2
            args.car
          else
            [ args.car + " ' ' + ",
              "_write_MIMARKto_MIMARKstring(",
              args.cdr.car,
              ")" ]
          end
    [
     'begin raise RuntimeError, ',
     arr,
     "rescue => __e ",
     sprintf( "  __e.set_backtrace( [\"%s:%d\"] + __e.backtrace )", sourcefile, lineno ),
     "  raise __e",
     "end"]
  else
    if (EXEC_TYPE_ANONYMOUS != execType) and isRubyInterface( funcname )
      # Ruby method
      #   1) convert arguments
      translatedArr  = args.map { |x| x.car }
      #   2) generate caller code part
      lispSymbolReference( toRubySymbol( funcname ), locals, translatedArr, sourcefile, lineno )
    else
      # Nendo function
      arr = separateWith( args.map { |x| x.car }, "," )
      origname = funcname.to_s
      sym   = toRubySymbol( origname )
      if EXEC_TYPE_ANONYMOUS == execType
        [sprintf( "trampCall( callProcedure( nil, 'anonymouse', " ),
          [ funcname ] + [ "," ],
          "[", arr, "]",
          "          ))"]
      else
        result = false
        if (execType == EXEC_TYPE_NORMAL) and (not locals.flatten.include?( sym ))
          if 1 < @optimize_level
            result = optimizedFunc( origname, sym, arr )
          end
        end
        if result
#              puts "result:"
#              pp result
          generateEmbedBacktraceInfo( sourcefile, lineno, result )
        else
          _call = case execType
                  when EXEC_TYPE_NORMAL
                    if locals.flatten.include?( sym )
                      [          "trampCall( callProcedure(  '" + sym + "', ", "))" ] # local function
                    else
                      [ sprintf( "trampCall( self.%s_METHOD( ", sym ), "))" ]         # toplevel function
                    end
                  when EXEC_TYPE_TAILCALL
                    [ sprintf( "delayCall( '%s', ", sym ),  ")"  ]
                  end

          temp = [
            sprintf( "%s '%s',", _call[0], origname ),
            [lispSymbolReference( sym, locals, nil, sourcefile, lineno )] + [","],
            "[", arr, "]",
            sprintf( "             %s", _call[1] )]
          generateEmbedBacktraceInfo( sourcefile, lineno, temp )
        end
      end
    end
  end
end

#forward_gensym_counter ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 193

def forward_gensym_counter( )
  @gensym_counter += 10000
end

#generateEmbedBacktraceInfo(sourcefile, lineno, arr) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 375

def generateEmbedBacktraceInfo( sourcefile, lineno, arr )
  if sourcefile and lineno
    if @runtimeCheck
      ["begin",
       [
         sprintf( 'embedBacktraceInfo( "%s", %s );', sourcefile, lineno ),
         arr],
       "end"
      ]
    else
      [arr]
    end
  else
    arr
  end
end

#genQuote(sexp, str = "") ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 652

def genQuote( sexp, str = "" )
  origStr = str
  case sexp
  when Cell
    if sexp.isNull
      str += "Cell.new()"
    else
      arr = sexp.map { |x| genQuote( x.car ) }
      str += "Cell.new("
      str += arr.join( ",Cell.new(" )
      str += "," + genQuote( sexp.getLastAtom )  if sexp.lastAtom
      str += arr.map{ |e| ")" }.join
    end
  when Array
    arr = sexp.map { |x| genQuote( x ) }
    str += "[" +  arr.join(",") + "]"
  when Symbol
    str += sprintf( ":\"%s\"", sexp.to_s )
  when ParsedSymbol
    str += sprintf( ":\"%s\"", sexp.to_s )
  when String, LispString
    str += sprintf( "\"%s\"", LispString.escape( sexp ))
  when LispKeyword
    str += sprintf( "LispKeyword.new( \"%s\" )", sexp.key.to_s )
  when TrueClass, FalseClass, NilClass  # reserved symbols
    str += toRubyValue( sexp )
  when SyntacticClosure
    str += sprintf( ":\"%s\"", sexp.originalSymbol.to_s )
  when Nil
    str += "Cell.new()"
  else
    str += sprintf( "%s", sexp )
  end
  str
end

#getOptimizeLevel ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 153

def getOptimizeLevel
  @optimize_level
end

#global_lisp_define(rubySymbol, val) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 139

def global_lisp_define( rubySymbol, val )
  @___tmp = val
  eval( sprintf( "@%s = @___tmp;", rubySymbol ), @binding )
  eval( sprintf( "@global_lisp_binding['%s'] = @___tmp;", rubySymbol ), @binding )
end

#isDefines(sym) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 357

def isDefines( sym )
  sym = castParsedSymbol( sym )
  result = [ :define, :set!, :"define-syntax", @core_syntax_hash[ :define ], @core_syntax_hash[ :set! ], @core_syntax_hash[ :"define-syntax" ] ].include?( sym )
  return result
end

#isRubyInterface(name) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 239

def isRubyInterface( name )
  name.to_s.match( /[.]/ )
end

#lispEval(sexp, sourcefile, lineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1236

def lispEval( sexp, sourcefile, lineno )
  begin
    sourceInfo = SourceInfo.new
    @lastSourcefile = sourcefile
    @lastLineno     = lineno
    sourceInfo.setSource( sourcefile, lineno, sexp )

    # macro expand phase
    sexp = macroexpandPhase( sexp )
    if @debug
      printf( "\n          expaneded=<<< %s >>>\n", (Printer.new())._print(sexp))
    end

    # compiling phase written
    origsym = "%compile-phase"
    sym = toRubySymbol( origsym )
    if ( eval( sprintf( "(defined? @%s and Proc == @%s.class)", sym,sym ), @binding ))
      eval( sprintf( "@___tmp = @%s", sym ), @binding )
      sexp = trampCall( callProcedure( nil, origsym, @___tmp, [ sexp ]))
      if @debug
        printf( "\n          compiled= <<< %s >>>\n", (Printer.new())._print(sexp))
      end
    end
    sourceInfo.setExpanded( sexp )

    arr = [ "trampCall( ", translate( sexp, [], sourceInfo ), " )" ]
    rubyExp = ppRubyExp( 0, arr, lineno ).flatten.join
    sourceInfo.setCompiled( rubyExp )
    if not @compiled_code.has_key?( sourcefile )
      @compiled_code[ sourcefile ] = Array.new
    end
    @compiled_code[ sourcefile ] << rubyExp
    if sourceInfo.varname
      @source_info_hash[ sourceInfo.varname ] = sourceInfo
    end
    printf( "          rubyExp=<<<\n%s\n>>>\n", rubyExp ) if @debug
    eval( rubyExp, @binding, @lastSourcefile, @compiledLineno )
  rescue SystemStackError => e
    displayTopOfCalls( e )
    raise e
  rescue => e
    displayBacktrace( e )
    raise e
  end
end

#lispMethodEntry(name, _log) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 161

def lispMethodEntry( name, _log )
  @call_depth += 1
  if @trace_debug and _log
    puts " " * @call_depth + "ENTRY: " + name
  end
end

#lispMethodExit(name, _log) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 167

def lispMethodExit( name, _log )
  if @trace_debug and _log
    puts " " * @call_depth + "exit:  " + name
  end
  @call_depth -= 1
end

#lispSymbolReference(sym, locals, translatedArr, sourcefile, lineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 698

def lispSymbolReference( sym, locals, translatedArr, sourcefile, lineno )
  variable_sym = sym.split( /[.]/ )[0]
  global_cap = if variable_sym.match( /^[A-Z]/ )
                 nil
               else
                 locals.flatten.include?( variable_sym ) ? nil : "@"
               end
  expression = if translatedArr
                 [trampCallCap( sprintf( "%s%s(", global_cap, sym )),
                  separateWith( translatedArr, "," ),
                  sprintf( "  )" )]
               else
                 [trampCallCap( sprintf( "%s%s", global_cap, sym ))]
               end
  if global_cap
    if @runtimeCheck
      ["begin",
       [sprintf( "if @global_lisp_binding.has_key?('%s') then", variable_sym ),
        expression,
        sprintf( 'else raise NameError.new( "%s:%d: Error: undefined variable %s", "%s" ) end', sourcefile, lineno, toLispSymbol( variable_sym ), toLispSymbol( variable_sym )),
        sprintf( 'rescue => __e ; __e.set_backtrace( ["%s:%d"] + __e.backtrace ) ; raise __e',  sourcefile, lineno  )],
       "end"]
    else
      expression
    end
  else
    if @runtimeCheck
      ["begin",
       [expression,
        sprintf( 'rescue => __e ; __e.set_backtrace( ["%s:%d"] + __e.backtrace ) ; raise __e', sourcefile, lineno )],
       "end"]
    else
      expression
    end
  end
end

#macroexpandEngine(sexp, syntaxArray, lexicalVars) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 893

def macroexpandEngine( sexp, syntaxArray, lexicalVars )
  if @macroExpandCount <= 0
    sexp
  else
    __macroexpandEngine( sexp, syntaxArray, lexicalVars )
  end
end

#macroexpandEngineLoop(sexp, syntaxArray, lexicalVars) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 883

def macroexpandEngineLoop( sexp, syntaxArray, lexicalVars )
  converge = true
  begin
    newSexp  = macroexpandEngine( sexp, syntaxArray, lexicalVars )
    converge = _equal_QUMARK( newSexp, sexp )
    sexp = newSexp
  end until converge or (@macroExpandCount <= 0)
  sexp
end

#macroexpandInit(initVal) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 879

def macroexpandInit( initVal )
  @macroExpandCount = initVal
end

#macroexpandPhase(sexp) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1097

def macroexpandPhase( sexp )
  macroexpandInit( 100000 )
  _strip_MIMARKlet_MIMARKsyntax_MIMARKkeyword(
     _strip_MIMARKsyntax_MIMARKquote(
        macroexpandEngineLoop( sexp, [], [] )))
end

#makeBegin(args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 499

def makeBegin( args, locals )
  ar = args.map { |e|
    translate( e.car, locals )
  }
  if ar.size < 2
    ar
  else
    ["begin ", makeComment("#makeBegin"), ar, "end"]
  end
end

#makeClosure(sym, args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 534

def makeClosure( sym, args, locals )
  first = args.car
  rest  = args.cdr
  ( _locals, argStr ) = toRubyParameter( first )
  str = case sym
        when :macro
          sprintf( "LispMacro.new { %s ", argStr )
        when :lambda
          sprintf( "Proc.new { %s ", argStr )
        when :"%syntax"
          sprintf( "LispSyntax.new { %s ", argStr )
        when :"&block"
          sprintf( "&Proc.new { %s ", argStr )
        else
          raise "Error: makeClosure: unknown symbol type " + sym
        end
  ar = rest.map { |e|
    translate( e.car, locals.clone + [_locals])
  }
  [ str, ar, "}" ]
end

#makeComment(commentStr) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 486

def makeComment( commentStr )
  [ commentStr ]
end

#makeGuard(args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 630

def makeGuard( args, locals )
  _var        = toRubySymbol( args.car )
  _locals     = locals.clone + [_var]
  _case       = translate( args.cdr.car,         _locals )
  _thunk      = translate( args.cdr.cdr.car,     _locals )
  ["begin ",
   makeComment("#makeGuard"),
   [ _thunk ],
   "rescue => " + _var,
   [ _case ],
   "end" ]
end

#makeIf(args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 556

def makeIf( args, locals )
  _condition = translate( args.car,         locals )
  _then      = translate( args.cdr.car,     locals )
  _else      = nil
  if 2 < args.length
    _else    = translate( args.cdr.cdr.car, locals )
  end
  if _else
    ["if ( ", _condition, " ) then",
     [ _then ],
     "else",
     [ _else ],
     "end"]
  else
    ["if ( ", _condition, " ) then",
     [ _then ],
     "end"]
  end
end

#makeLet(args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 576

def makeLet( args, locals )
  _name = "___lambda"
  argvals = []
  rest = args.cdr
  if _null_QUMARK( args.car )
    # nothing to do
    lambda_head = sprintf( "%s = lambda { || ", _name )
  else
    argsyms = args.car.map { |x|
      toRubySymbol( x.car.car.to_s )
    }
    argvals = args.car.map.with_index { |x,i|
      translate( x.car.cdr.car, locals )
    }
    lambda_head = sprintf( "%s = lambda { |%s| ", _name, argsyms.join( "," ))
  end
  ["begin",
   makeComment("#makeLet"),
   [lambda_head,
    rest.map { |e|  translate( e.car, locals.clone + [argsyms] ) },
    sprintf( "} ; %s.call(", _name ),
    separateWith( argvals, "," ),
    sprintf( "           )")],
   "end"]
end

#makeLetrec(args, locals) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 602

def makeLetrec( args, locals )
  _name = "___lambda"
  argvals = []
  argsyms = []
  rest = args.cdr
  if _null_QUMARK( args.car )
    # nothing to do
    lambda_head = sprintf( "%s = lambda { || ", _name )
  else
    argsyms = args.car.map { |x|
      toRubySymbol( x.car.car.to_s )
    }
    argvals = args.car.map { |x|
      translate( x.car.cdr.car, locals.clone + [argsyms] )
    }
    lambda_head = sprintf( "%s = lambda { |%s| ", _name, argsyms.join( "," ))
  end
  ["begin ",
   makeComment("#makeLetrec"),
   [lambda_head,
    argsyms.zip( argvals ).map { |x| [ x[0], " = ", x[1] ] },
    rest.map { |e|  translate( e.car, locals.clone + [argsyms] ) },
    sprintf( "} ; %s.call(", _name ),
    argsyms.map { |x| "nil" }.join( "," ),
    sprintf( "           )")],
   "end"]
end

#makeSetVariable(car, cdr, locals, sourceInfo) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 490

def makeSetVariable( car, cdr, locals, sourceInfo )
  cdr.cdr.each { |x|
    if Cell == x.class
      x.car = translate( x.car, locals, sourceInfo )
    end
  }
  execFunc( car, cdr, car.sourcefile, car.lineno, locals, sourceInfo, EXEC_TYPE_ANONYMOUS )
end

#normalizeBacktrace(str) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1199

def normalizeBacktrace( str )
  fields = str.split(/:/)
  if 3 <= fields.size()
    (filename,compiled_lineno,funcname) = fields
    if filename.match( ".nnd$" ) or filename.match( ".nndc$" ) or filename.match( ".nndc.nc$" ) or filename.match( ".scm$" )

      filename = filename.sub( /.nndc.nc$/, ".nnd" )
      filename = filename.sub( /.nndc$/,    ".nnd" )
      
      lineno = 1
      if compiled_lineno
        compiled_lineno = compiled_lineno.to_i
        lineno = compiled_lineno / LINENO_TIMES
        if lineno < 1
          lineno = 1
        end
      end
      
      funcname = funcname.sub(/^in [`]/,"")
      funcname = funcname.sub(/[']$/,"")
      if funcname.match(/_METHOD$/)
        funcname = funcname.sub(/_METHOD$/,"")
      else
        return nil
      end
      if '_' == funcname[0]
        funcname = toLispSymbol(funcname)
      end
      return sprintf( "%s:%s:in `%s' <nendo function> (compiled lineno=%d)",filename,lineno,funcname,compiled_lineno)
    else
      return nil
    end
  else
    return nil
  end
end

#optimizedFunc(origname, rubysym, args) ⇒ Object 



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# File 'lib/nendo/ruby/optimized_func.rb', line 39

def optimizedFunc( origname, rubysym, args )
  case origname
  when '+'
    case args.length
    when 0
      [ "#{rubysym}_ARGS0()" ]
    when 1
      ["( ", args[0][0]," ) "]
    when 2
      ["( ", args[0][0], "+", args[1][0], " ) "]
    when 3
      ["( ", args[0][0], "+", args[1][0], "+", args[2][0], " ) "]
    else
      false
    end
  when '-'
    case args.length
    when 0
      [ "#{rubysym}_ARGS0()" ]
    when 1
      ["( - ", args[0][0]," ) "]
    when 2
      ["( ", args[0][0], "-", args[1][0], " ) "]
    when 3
      ["( ", args[0][0], "-", args[1][0], "-", args[2][0], " ) "]
    else
      false
    end
  when '*'
    case args.length
    when 0
      [ "#{rubysym}_ARGS0()" ]
    when 1
      ["( ", args[0][0]," ) "]
    when 2
      ["( ", args[0][0], "*", args[1][0], " ) "]
    when 3
      ["( ", args[0][0], "*", args[1][0], "*", args[2][0], " ) "]
    else
      false
    end
  when 'car', 'cdr', 'not', 'length', 'null?', 'reverse', 'uniq',
    'write', 'write-to-string', 'display', 'print',
    'procedure?', 'macro?', 'symbol?', 'keyword?', 'syntax?', 'core-syntax?',
    'pair?', '%list?', 'integer?', 'number?', 'string?', 'macroexpand-1',
    'to-s', 'to-i', 'nil?', 'to-list', 'to-arr',
    'intern', 'string->symbol', 'symbol->string', 'read-from-string'
    raise ArgumentError, "Error: #{origname} requires 1 argument. "  unless 1 == args.length
    [ "#{rubysym}(",              args[0],         ")" ]
  when ">", ">=", "<", "<="
    ["( ", args[0][0], origname, args[1][0], " ) "]
  when 'cons', '=', "eq?", "equal?", 'set-car!', 'set-cdr!'
    raise ArgumentError, "Error: #{origname} requires 2 arguments. " unless 2 == args.length
    [ "#{rubysym}(",            args[0], args[1], ")" ]
  else
    false
  end
end

#popCompiledLineno ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1286

def popCompiledLineno( )
  if 1 < @compiledLinenoStack.size()
    return @compiledLinenoStack.pop()
  end
  return 0
end

#ppRubyExp(level, exp, lineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1115

def ppRubyExp( level, exp, lineno )
  cur_lineno = (lineno - 1) * LINENO_TIMES

  first_crs = adjustLineno( cur_lineno, @compiledLineno )
  @compiledLineno += first_crs.size()

  head = [ first_crs,  sprintf( "\n#line %d curLineno=%d compiledLineno=%d\n", lineno, cur_lineno, @compiledLineno ) ]
  @compiledLineno += 2
           
  indent = @indent * level
  body = exp.map { |x|
    if Array == x.class
      ppRubyExp( level+1, x, lineno )
    else
      str = sprintf( "%s", x )
      arr = str.split( /\n/ )
      if 0 < arr.size()
        @compiledLineno += arr.size() - 1
      end

      if str.match(/embedBacktraceInfo.+;/)
        m = str.match(/^embedBacktraceInfo[(] \"([^\"]+)\", ([0-9]+).+;/)
        if m
          fn = m[1]
          cur_lineno = (m[2].to_i-1) * LINENO_TIMES
        else
          fn = ""
          cur_lineno = 0
        end
        crs = adjustLineno( cur_lineno, @compiledLineno )
        @compiledLineno += crs.size()
        @compiledLineno += 1 # #embedBacktraceInfo(...) line
        sprintf( "%s#embedBacktraceInfo  %s  %d  target=%d  cur=%d  %s \n%s%s",
                 indent, fn, cur_lineno / LINENO_TIMES,
                 @compiledLineno, cur_lineno, crs,
                 indent, str)
      elsif str == 'end'
        @compiledLineno += 1
        sprintf( "\n%s%s", indent, str )
      elsif str.match( /^[*+-]$/ )
        sprintf( "%s%s", indent, str )
      elsif str == ">" or str == ">=" or str == "<" or str == "<="
        sprintf( "%s%s", indent, str )
      elsif str.match( /^[,]/ ) or str.match( /^ = / )
        sprintf( "%s%s", indent, str )
      else
        @compiledLineno += 1
        sprintf( "\n%s%s", indent, str )
      end
    end
  }
  return head + body
end

#pushCompiledLineno(lineno) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 1282

def pushCompiledLineno(lineno)
  @compiledLinenoStack.push(lineno)
end

#separateWith(arr, str) ⇒ Object

for code generation of Ruby’s argument values in case: str = “,”

1,“2”,3

> [

  [ 1,  ","]
  ["2", ","]
  [ 3 ]
]



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# File 'lib/nendo/ruby/evaluator.rb', line 349

def separateWith( arr, str )
  seps = []
  (arr.length-1).times {|n| seps << str }
  arr.zip( seps ).map{ |x|
    x.select { |elem| elem }
  }
end

#setArgv(argv) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 145

def setArgv( argv )
  self.global_lisp_define( toRubySymbol( "*argv*"), argv.to_list )
end

#setDisplayErrors(flag) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 157

def setDisplayErrors( flag )
  @displayErrorsFlag = flag
end

#setOptimizeLevel(level) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 149

def setOptimizeLevel( level )
  @optimize_level = level
end

#toLispSymbol(name) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/nendo/ruby/evaluator.rb', line 243

def toLispSymbol( name )
  name = name.to_s   if Symbol == name.class
  name = name.to_s   if ParsedSymbol == name.class
  raise ArgumentError, sprintf( "Error: `%s' is not a lisp symbol", name ) if not ('_' == name[0])
  name = name[1..-1]
  @char_table_ruby_to_lisp.each_pair { |key,val|
    name = name.gsub( Regexp.new( key ), val )
  }
  name
end

#toRubyArgument(origname, pred, args) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 258

def toRubyArgument( origname, pred, args )
  len = args.length
  num = pred.arity
  if 0 == num
    raise ArgumentError, errorMessageOf_toRubyArgument( origname, 1, num, len ) if 0 != len
    []
  elsif 0 < num
    if 0 == len
      raise ArgumentError, errorMessageOf_toRubyArgument( origname, 4, num, len )
    else
      raise ArgumentError, errorMessageOf_toRubyArgument( origname, 2, num, len ) if num != len
      args
    end
  else
    num = num.abs( )-1
    raise ArgumentError, errorMessageOf_toRubyArgument( origname, 3, num, len ) if num > len
    params = []
    rest = []
    args.each_with_index { |x,i|
      if i < num
        params << x
      else
        rest   << x
      end
    }
    result = []
    if 0 < params.length
      result = params
    end
    if 0 == rest.length
      result << Cell.new
    else
      result << rest.to_list
    end
    result
  end
end

#toRubyParameter(argform) ⇒ Object

returns [ argsyms[], string ]



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# File 'lib/nendo/ruby/evaluator.rb', line 511

def toRubyParameter( argform )
  argsyms = []
  locals = []
  rest = false
  if _symbol_QUMARK( argform )
    rest       = argform
  else
    argsyms    = argform.map { |x|  toRubySymbol( x.car ) }
    locals     = argsyms.clone
    if argform.lastAtom
      rest = argform.getLastAtom
    end
  end
  if rest
    rest       = toRubySymbol( rest )
    locals     << rest
    argsyms    << "*__rest__"
    [ locals, sprintf( "|%s| %s = __rest__[0] ; ", argsyms.join( "," ), rest ) ]
  else
    [ locals, sprintf( "|%s|",                     argsyms.join( "," ))        ]
  end
end

#toRubySymbol(name) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 209

def toRubySymbol( name )
  if SyntacticClosure == name.class
    "_" + name.to_s
  else
    name = name.to_s   if Symbol == name.class
    name = name.to_s   if ParsedSymbol == name.class
    if 0 == name.length
      ""
    else
      name = name.dup if name.frozen?
      name.gsub!( Regexp.new( Regexp.escape( '...' )), @char_table_lisp_to_ruby[ '...' ] )
      arr = name.gsub( /["]/, '' ).split( /[.]/ )
      tmp = arr[0].dup
      tmp.gsub!( /[:][:]/, "  " ) # save '::'
      @char_table_lisp_to_ruby.each_pair { |key,val|
        tmp.gsub!( Regexp.new( Regexp.escape( key )), val )
      }
      arr[0] = tmp.gsub( /[ ][ ]/, "::" )
      if arr[0].match( /^[A-Z]/ )
        # nothing to do
      elsif arr[0] == ""
        arr[0] = 'Kernel'
      else
        arr[0] = '_' + arr[0]
      end
      arr.join( "." )
    end
  end
end

#toRubyValue(val) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 197

def toRubyValue( val )
  if NilClass == val.class
    "nil"
  elsif TrueClass == val.class
    val.to_s
  elsif FalseClass == val.class
    val.to_s
  else
    val.to_s
  end
end

#trampCall(result) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 296

def trampCall( result )
  while result.class == DelayedCallPacket
    result = __send__( result.rubysym + "_METHOD", result.origname, result.pred, result.args )
  end
  result
end

#trampCallCap(sym) ⇒ Object 



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# File 'lib/nendo/ruby/evaluator.rb', line 688

def trampCallCap( sym )
  if isRubyInterface( sym )
    arr = sym.split( /[.]/ )
    arr[0] = sprintf( "trampCall(%s)", arr[0] )
    arr.join( "." )
  else
    "trampCall(" + sym + ")"
  end
end

#translate(sexpArg, locals, sourceInfo = nil) ⇒ Object

Lisp->Ruby translater

- locals is array of closure's local variable list
  when S-expression is
  (let ((a 1)
        (b 2))
    (let ((c 3))
        (print (+ a b c))))
     => locals must be  [["_a" "_b"]["_c"]] value.



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# File 'lib/nendo/ruby/evaluator.rb', line 743

def translate( sexpArg, locals, sourceInfo = nil )
  sexp = castParsedSymbol( sexpArg )
  case sexp
  when Cell
    inv = @core_syntax_hash.invert
#        if sexp.car.to_s.match( /begin/ ) and sexp.car.to_s.match( /core/ )
#          p inv
#          p inv.keys
#          p sexp.car.class
#          p castParsedSymbol( sexp.car ).intern, inv.has_key?( castParsedSymbol( sexp.car ).intern )
#          p inv[ castParsedSymbol( sexp.car ).intern ]
#        end
    if ParsedSymbol == sexp.car.class or Symbol == sexp.car.class
      car = if inv.has_key?( castParsedSymbol( sexp.car ).intern )
              inv[ castParsedSymbol( sexp.car ).intern ]
            else
              castParsedSymbol( sexp.car )
            end
    else
      car = sexp.car
    end
    car = castParsedSymbol( car )

    if :quote == car
      genQuote( sexp.second )
    elsif :"syntax-quote" == car
      [ "Cell.new(:\"syntax-quote\", ", genQuote( sexp.cdr ), ")" ]
    elsif sexp.isDotted
      raise NameError, "Error: can't eval dotted pair."
    elsif sexp.isNull
      [ "Cell.new()" ]
    elsif isDefines( car )
      self.makeSetVariable( car, sexp.cdr, locals, sourceInfo )
    elsif :begin == car
      self.makeBegin( sexp.cdr, locals )
    elsif :lambda == car
      self.makeClosure( :lambda, sexp.cdr, locals )
    elsif :macro == car
      self.makeClosure( :macro, sexp.cdr, locals )
    elsif :"%syntax" == car
      self.makeClosure( :"%syntax", sexp.cdr, locals )
    elsif :"&block" == car
      self.makeClosure( :"&block", sexp.cdr, locals )
    elsif :if == car
      self.makeIf( sexp.cdr,    locals )
    elsif :"%let" == car
      self.makeLet( sexp.cdr,   locals )
    elsif :letrec == car
      self.makeLetrec( sexp.cdr,   locals )
    elsif :"%guard" == car
      self.makeGuard( sexp.cdr,   locals )
    elsif :"%tailcall" == car
      if sexp.cdr.car.is_a? Cell
        sexp = sexp.cdr.car
        if isDefines( sexp.car )
          translate( sexp, locals, sourceInfo )
        else
          if sexp.car.is_a? Cell
            self.apply( translate( sexp.car, locals, sourceInfo ), sexp.cdr, sexp.car.car.sourcefile, sexp.car.car.lineno, locals, sourceInfo, EXEC_TYPE_ANONYMOUS )
          else
            self.apply( sexp.car, sexp.cdr, sexp.car.sourcefile, sexp.car.lineno, locals, sourceInfo, EXEC_TYPE_TAILCALL )
          end
        end
      else
        raise RuntimeError, "Error: special form tailcall expects function call expression."
      end
    elsif Cell == sexp.car.class
      self.apply( translate( sexp.car, locals, sourceInfo ), sexp.cdr, sexp.car.car.sourcefile, sexp.car.car.lineno, locals, sourceInfo, EXEC_TYPE_ANONYMOUS )
    else
      self.apply( sexp.car, sexp.cdr, sexp.car.sourcefile, sexp.car.lineno, locals, sourceInfo, EXEC_TYPE_NORMAL )
    end
  when Array
    raise RuntimeError, "Error: can't eval unquoted vector."
  else
    case sexpArg
    when Symbol
      sym = sexp.to_s
      sym = toRubySymbol( sym )
      lispSymbolReference( sym, locals, nil, sexp.sourcefile, sexp.lineno )
    when ParsedSymbol
      sym = sexp.to_s
      sym = toRubySymbol( sym )
      lispSymbolReference( sym, locals, nil, sexpArg.sourcefile, sexpArg.lineno )
    when 1.class
      sexp.to_s
    when String, LispString
      sprintf( "\"%s\"", LispString.escape( sexp ))
    when LispRegexp
      if sexp.ignoreCase
        sprintf( "Regexp.new( \"%s\", Regexp::IGNORECASE)", sexp.escape )
      else
        sprintf( "Regexp.new( \"%s\")", sexp.escape )
      end
    when LispKeyword
      sprintf( "LispKeyword.new( \"%s\" )", sexp.key )
    when Nil
      "Nil.new"
    when TrueClass, FalseClass, NilClass  # reserved symbols
      toRubyValue( sexp )
    when SyntacticClosure
      toRubySymbol( sexp )
    else
      sexp.to_s
    end
  end
end