Class: Nendo::Evaluator

Inherits:
Object
  • Object
show all
Includes:
BuiltinFunctions
Defined in:
lib/nendo.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

Instance Method Summary collapse

Methods included from BuiltinFunctions

#__ASMARK, #__ASMARKFILE_ASMARK, #__ASMARKLINE_ASMARK, #__EQMARK, #__GTMARK, #__GTMARK_EQMARK, #__LTMARK, #__LTMARK_EQMARK, #__MIMARK, #__PAMARK, #__PAMARKlist_QUMARK, #__PLMARK, #__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_MIMARKvalues, #_modulo, #_newline, #_nil_QUMARK, #_not, #_null_QUMARK, #_number_QUMARK, #_pair_QUMARK, #_print, #_printf, #_procedure_QUMARK, #_quotient, #_raise, #_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.



1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
 
# File 'lib/nendo.rb', line 1270

def initialize( core, debug = false )
  @core    = core
  @indent  = "  "
  @binding = binding
  @debug   = debug
  @trace_debug = false
  @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" ]
  @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

  # init optimize level
  @optimize_level = 1
  
  # 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 



1507
1508
1509
1510
1511
1512
1513
 
# File 'lib/nendo.rb', line 1507

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( args[0], args[1], args[2] )
  end
end

Instance Method Details

#__PAMARKexport_MIMARKto_MIMARKruby(origname, pred) ⇒ Object 



2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
 
# File 'lib/nendo.rb', line 2222

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( '%s', @_%s, [ " + argsStr + " ] )) ",
                   origname, origname ),
          "end ;",
          "def @core." + origname + "(" + argsStr + ")",
          "  @evaluator." + origname + "(" + argsStr + ") ",
          "end"
        ].join
  eval( str, @binding )
  true
end

#__PAMARKload(filename) ⇒ Object 



2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
 
# File 'lib/nendo.rb', line 2140

def __PAMARKload( filename )
  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()
end

#__PAMARKload_MIMARKcompiled_MIMARKcode(filename) ⇒ Object 



2163
2164
2165
2166
2167
2168
 
# File 'lib/nendo.rb', line 2163

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

#_clean_MIMARKcompiled_MIMARKcode ⇒ Object 



2170
2171
2172
 
# File 'lib/nendo.rb', line 2170

def _clean_MIMARKcompiled_MIMARKcode
  @compiled_code = Hash.new
end

#_disable_MIMARKidebug ⇒ Object 



2191
2192
2193
 
# File 'lib/nendo.rb', line 2191

def _disable_MIMARKidebug()
  @debug = false
end

#_disable_MIMARKtrace ⇒ Object 



2197
2198
2199
 
# File 'lib/nendo.rb', line 2197

def _disable_MIMARKtrace()
  @trace_debug = false
end

#_enable_MIMARKidebug ⇒ Object 



2188
2189
2190
 
# File 'lib/nendo.rb', line 2188

def _enable_MIMARKidebug()
  @debug = true
end

#_enable_MIMARKtrace ⇒ Object 



2194
2195
2196
 
# File 'lib/nendo.rb', line 2194

def _enable_MIMARKtrace()
  @trace_debug = true
end

#_eval(sexp) ⇒ Object 



2184
2185
2186
 
# File 'lib/nendo.rb', line 2184

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

#_gensym ⇒ Object 



1395
1396
1397
1398
1399
1400
1401
1402
1403
 
# File 'lib/nendo.rb', line 1395

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 



2174
2175
2176
2177
2178
2179
2180
2181
2182
 
# File 'lib/nendo.rb', line 2174

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 



2203
2204
2205
 
# File 'lib/nendo.rb', line 2203

def _get_MIMARKoptimize_MIMARKlevel()
  self.getOptimizeLevel
end

#_get_MIMARKsource_MIMARKinfo(varname) ⇒ Object 



2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
 
# File 'lib/nendo.rb', line 2207

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 



2158
2159
2160
2161
 
# File 'lib/nendo.rb', line 2158

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

#_make_MIMARKsyntactic_MIMARKclosure(mac_env, use_env, identifier) ⇒ Object 



2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
 
# File 'lib/nendo.rb', line 2249

def _make_MIMARKsyntactic_MIMARKclosure( mac_env, use_env, identifier )
  if _pair_QUMARK( identifier )
    raise RuntimeError, "Error: make-syntactic-closure requires symbol only..."
  else
    if mac_env.to_arr.include?( identifier )
      identifier
    else
      sym = toRubySymbol( identifier ) + _gensym( ).to_s
      sym.intern
    end
  end
end

#_set_MIMARKoptimize_MIMARKlevel(level) ⇒ Object 



2200
2201
2202
 
# File 'lib/nendo.rb', line 2200

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

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



1758
1759
1760
1761
1762
1763
1764
1765
 
# File 'lib/nendo.rb', line 1758

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(origname, pred, args) ⇒ Object 



1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
 
# File 'lib/nendo.rb', line 1524

def callProcedure( origname, pred, args )
  if @call_counters.has_key?( origname )
    @call_counters[ origname ] += 1
  else
    @call_counters[ origname ]  = 1
  end

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

  @call_counters[ origname ]   -= 1

  result
end

#defMethodStr(name, _log) ⇒ Object 



1386
1387
1388
1389
1390
1391
1392
1393
 
# File 'lib/nendo.rb', line 1386

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

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



1515
1516
1517
1518
1519
1520
1521
1522
 
# File 'lib/nendo.rb', line 1515

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

#displayTopOfCalls(exception) ⇒ Object 



2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
 
# File 'lib/nendo.rb', line 2087

def displayTopOfCalls( exception )
  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

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



1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
 
# File 'lib/nendo.rb', line 1553

def execFunc( funcname, args, sourcefile, lineno, locals, sourceInfo, execType )
  case funcname
  when :define, :set!, :"define-syntax", @core_syntax_hash[ :define ], @core_syntax_hash[ :set! ], @core_syntax_hash[ :"define-syntax" ]   # `define' special form
    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",
      [
       if global_cap
         [
          defMethodStr( variable_sym, true ),
          sprintf( "@global_lisp_binding['%s'] = self.method( :%s_METHOD )", variable_sym, variable_sym )
         ]
       else
         ""
       end,
       sprintf( "%s%s = ", global_cap, variable_sym ),
       "trampCall(", [ ar ], ")"],
      "end"
    ]
  when :error, @core_syntax_hash[ :error ]
    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 }, "," )
      if EXEC_TYPE_ANONYMOUS == execType
        [sprintf( "trampCall( callProcedure( 'anonymouse', " ),
         [ funcname ] + [ "," ],
         "[", arr, "]",
         "          ))"]
      else
        origname = funcname.to_s
        funcname = funcname.to_s
        sym      = toRubySymbol( funcname )
        _call = case execType
                when EXEC_TYPE_NORMAL
                  if locals.flatten.include?( sym )
                    [          "trampCall( callProcedure(  ",        "))" ] # local function
                  else
                    [ sprintf( "trampCall( self.%s_METHOD( ", sym ), "))" ] # toplevel function
                  end
                when EXEC_TYPE_TAILCALL
                  [ sprintf( "delayCall( '%s', ", sym ),    ")"  ]
                end
        [sprintf( "%s '%s',", _call[0], origname ), 
         [lispSymbolReference( sym, locals, nil, sourcefile, lineno )] + [","], 
         "[", arr, "]",
         sprintf( "             %s", _call[1] )]
      end
    end
  end
end

#forward_gensym_counter ⇒ Object 



1405
1406
1407
 
# File 'lib/nendo.rb', line 1405

def forward_gensym_counter( )
  @gensym_counter += 10000
end

#genQuote(sexp, str = "") ⇒ Object 



1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
 
# File 'lib/nendo.rb', line 1767

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 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 Nil
    str += "Cell.new()"
  else
    str += sprintf( "%s", sexp )
  end
  str
end

#getOptimizeLevel ⇒ Object 



1369
1370
1371
 
# File 'lib/nendo.rb', line 1369

def getOptimizeLevel
  @optimize_level
end

#global_lisp_define(rubySymbol, val) ⇒ Object 



1355
1356
1357
1358
1359
 
# File 'lib/nendo.rb', line 1355

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

#isRubyInterface(name) ⇒ Object 



1445
1446
1447
 
# File 'lib/nendo.rb', line 1445

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

#letArgumentList(sexp) ⇒ Object

insert quote in let argument list

((sym1 list1)
 (sym2 list2)
 (sym3 list3))

will be transformed

(((quote sym1) list1)
 ((quote sym2) list2)
 ((quote sym3) list3))



1927
1928
1929
1930
1931
1932
1933
 
# File 'lib/nendo.rb', line 1927

def letArgumentList( sexp )
  sexp.each { |arg|
    arg.car.car = Cell.new( :quote, Cell.new( arg.car.car ))
    arg.car.cdr = quotingPhase( arg.car.cdr )
  }
  sexp
end

#lispEval(sexp, sourcefile, lineno) ⇒ Object 



2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
 
# File 'lib/nendo.rb', line 2100

def lispEval( sexp, sourcefile, lineno )
  begin
    sourceInfo = SourceInfo.new
    @lastSourcefile = sourcefile
    @lastLineno     = lineno
    sourceInfo.setSource( sourcefile, lineno, sexp )
    sexp = macroExpandPhase( sexp )
    sexp = quotingPhase( sexp )
    if @debug
      printf( "\n          quoting=<<< %s >>>\n", (Printer.new())._print(sexp))
    end
    # compiling phase written in Nendo
    sym = toRubySymbol( "%compile-phase" )
    if ( eval( sprintf( "(defined? @%s and Proc == @%s.class)", sym,sym ), @binding ))
      eval( sprintf( "@___tmp = @%s", sym ), @binding )
      sexp = trampCall( callProcedure( sym, @___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 ).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, @lastLineno )
  rescue SystemStackError => e
    displayTopOfCalls( e )
    raise e
  end
end

#lispMethodEntry(name, _log) ⇒ Object 



1373
1374
1375
1376
1377
1378
 
# File 'lib/nendo.rb', line 1373

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

#lispMethodExit(name, _log) ⇒ Object 



1379
1380
1381
1382
1383
1384
 
# File 'lib/nendo.rb', line 1379

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 



1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
 
# File 'lib/nendo.rb', line 1809

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
    ["begin",
     [sprintf( "if @global_lisp_binding.has_key?('%s') then", variable_sym ),
      expression,
      sprintf( 'else raise NameError.new( "Error: undefined variable %s", "%s" ) end', variable_sym, variable_sym ),
      sprintf( 'rescue => __e ; __e.set_backtrace( ["%s:%d"] + __e.backtrace ) ; raise __e',  sourcefile, lineno  )],
     "end"]
  else
    ["begin",
     [expression,
      sprintf( 'rescue => __e ; __e.set_backtrace( ["%s:%d"] + __e.backtrace ) ; raise __e', sourcefile, lineno )],
     "end"]
  end
end

#macroexpandEngine(sexp) ⇒ Object 



2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
 
# File 'lib/nendo.rb', line 2011

def macroexpandEngine( sexp )
  case sexp
  when Cell
    car = sexp.car
    if :quote == car or :"syntax-quote" == car or @core_syntax_hash[ :quote ] == car or @core_syntax_hash[ :"syntax-quote" ] == car
      sexp
    else
      sym = sexp.car.to_s
      p 'macroexpandEngine' if @debug
      p sexp.car.class if @debug
      p sym            if @debug
      sym = toRubySymbol( sym )
      newSexp = sexp
      if isRubyInterface( sym )
        # do nothing
        sexp
      elsif sexp.car.class == Symbol and eval( sprintf( "(defined? @%s and LispMacro == @%s.class)", sym,sym ), @binding )
        eval( sprintf( "@__macro = @%s", sym ), @binding )
        newSexp = trampCall( callProcedure( sym, @__macro, sexp.cdr.to_arr ))
      elsif sexp.car.class == Symbol 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( sym, @__syntax, [ sexp, Cell.new(), _global_MIMARKvariables( ) ] ))
      end
      if _equal_QUMARK( newSexp, sexp )
        sexp.map { |x|
          if x.car.is_a? Cell
            if 0 <= @macroExpandCount
              macroexpandEngine( x.car )
            else
              x.car
            end
          else
            x.car
          end
        }.to_list( sexp.lastAtom, sexp.getLastAtom )
      else
        @macroExpandCount -= 1
        newSexp
      end
    end
  else
    sexp
  end
end

#macroexpandInit(initVal) ⇒ Object 



2007
2008
2009
 
# File 'lib/nendo.rb', line 2007

def macroexpandInit( initVal )
  @macroExpandCount = initVal
end

#macroExpandPhase(sexp) ⇒ Object 



2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
 
# File 'lib/nendo.rb', line 2060

def macroExpandPhase( sexp )
  converge = true
  begin
    macroexpandInit( 100000 )
    newSexp  = macroexpandEngine( sexp )
    converge = _equal_QUMARK( newSexp, sexp )
    sexp = newSexp
  end until converge
  sexp
end

#makeBegin(args, locals) ⇒ Object 



1630
1631
1632
1633
1634
1635
 
# File 'lib/nendo.rb', line 1630

def makeBegin( args, locals )
  ar = args.map { |e|
    translate( e.car, locals )
  }
  ["begin", ar, "end"]
end

#makeClosure(sym, args, locals) ⇒ Object 



1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
 
# File 'lib/nendo.rb', line 1661

def makeClosure( sym, args, locals )
  first = args.car
  if args.car.car == :quote
    first   = args.car.cdr.car
  end
  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

#makeIf(args, locals) ⇒ Object 



1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
 
# File 'lib/nendo.rb', line 1686

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 



1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
 
# File 'lib/nendo.rb', line 1706

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

#makeLetrec(args, locals) ⇒ Object 



1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
 
# File 'lib/nendo.rb', line 1731

def makeLetrec( args, locals )
  _name = "___lambda"
  argvals = []
  argsyms = []
  rest = args.cdr
  if args.car.is_a? Nil
    # nothing to do
    lambda_head = sprintf( "%s = lambda { || ", _name )
  else
    argsyms = args.car.map { |x|
      toRubySymbol( x.car.car.cdr.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",
   [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

#ppRubyExp(level, exp) ⇒ Object 



2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
 
# File 'lib/nendo.rb', line 2071

def ppRubyExp( level, exp )
  indent = @indent * level
  exp.map { |x|
    if Array == x.class
      ppRubyExp( level+1, x )
    else
      str = sprintf( "%s", x )
      if str.match( /^[,]/ ) or str.match( /^ = / )
        sprintf( "%s%s", indent, str )
      else
        sprintf( "\n%s%s", indent, str )
      end
    end
  }
end

#quotingPhase(sexp) ⇒ Object 



1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
 
# File 'lib/nendo.rb', line 1935

def quotingPhase( sexp )
  case sexp
  when Cell
    car = sexp.car
    if :quote == car or :quasiquote == car or :"syntax-quote" == car or
        @core_syntax_hash[ :quote ] == car or
        @core_syntax_hash[ :quasiquote ] == car or
        @core_syntax_hash[ :"syntax-quote" ] == car
      sexp
    elsif :define == car or :set! == car or :lambda == car or :macro == car or :"&block" == car or :"%syntax" == car or :"define-syntax" == car or
        @core_syntax_hash[ :define ] == car or
        @core_syntax_hash[ :set! ] == car or
        @core_syntax_hash[ :lambda ] == car or
        @core_syntax_hash[ :macro ] == car or
        @core_syntax_hash[ :"&block" ] == car or
        @core_syntax_hash[ :"%syntax" ] == car or 
        @core_syntax_hash[ :"define-syntax" ] == car
      if @debug
        if 2 >= sexp.length
          printf( "\n    quotingPhase-1      label=%s, sexp.length=%d \n", sexp.car, sexp.length )
        else
          printf( "\n    quotingPhase-1      label=%s, sexp.length=%d, sexp.cdr=%s sexp.cdr.car=%s sexp.cdr.cdr=%s\n", sexp.car, sexp.length, sexp.cdr, sexp.cdr.car, sexp.cdr.cdr )
        end
      end
      if 1 == sexp.length
        nil
        # do nothing
      elsif 3 <= sexp.length
        # argument
        sexp.cdr.car = Cell.new( :quote, Cell.new( sexp.cdr.car ))
        # body
        sexp.cdr.cdr = quotingPhase( sexp.cdr.cdr )
      else
        raise RuntimeError, sprintf( "Error: %s is not a illegal form got: %s", sexp.car, _write_MIMARKto_MIMARKstring( sexp ))
      end
      sexp
    elsif :let == car or @core_syntax_hash[ :let ] == car
      if _null_QUMARK( sexp.cdr )
        # do nothing
      else
        case sexp.cdr.car
        when Cell        # let
          sexp.cdr         = Cell.new( letArgumentList( sexp.cdr.car ),
                                       quotingPhase( sexp.cdr.cdr ))
        when Symbol      # named let
          sexp.cdr.car     = Cell.new( :quote, Cell.new( sexp.cdr.car ))
          sexp.cdr.cdr     = Cell.new( letArgumentList( sexp.cdr.cdr.car ),
                                       quotingPhase( sexp.cdr.cdr.cdr ))
        end
      end
      sexp
    elsif :letrec == car or @core_syntax_hash[ :letrec ] == car
      if _null_QUMARK( sexp.cdr )
        # do nothing
      else
        case sexp.cdr.car
        when Cell        # letrec
          sexp.cdr         = Cell.new( letArgumentList( sexp.cdr.car ),
                                       quotingPhase( sexp.cdr.cdr ))
        when Symbol      # named letrec is illegal
          raise RuntimeError, "Error: named letrec is not a illegal form"
        end
      end
      sexp
    else
      Cell.new( quotingPhase( sexp.car ), quotingPhase( sexp.cdr ))
    end
  else
    sexp
  end
end

#separateWith(arr, str) ⇒ Object

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

1,“2”,3

> [ 

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



1545
1546
1547
1548
1549
1550
1551
 
# File 'lib/nendo.rb', line 1545

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 



1361
1362
1363
 
# File 'lib/nendo.rb', line 1361

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

#setOptimizeLevel(level) ⇒ Object 



1365
1366
1367
 
# File 'lib/nendo.rb', line 1365

def setOptimizeLevel( level )
  @optimize_level = level
end

#toLispSymbol(name) ⇒ Object

Raises:

  • (ArgumentError) 


1449
1450
1451
1452
1453
1454
1455
1456
1457
 
# File 'lib/nendo.rb', line 1449

def toLispSymbol( name )
  name = name.to_s  if Symbol == 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 



1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
 
# File 'lib/nendo.rb', line 1459

def toRubyArgument( origname, pred, args )
  argument_error_message = sprintf( "Error: wrong number of arguments for closure `%s'", origname )
  num = pred.arity
  if 0 == num
    raise ArgumentError, argument_error_message if 0 != args.length
    []
  elsif 0 < num
    if 0 == args.length
      [ Nil.new ]
    else
      raise ArgumentError, argument_error_message if num != args.length
      args
    end
  else
    num = num.abs( )-1
    raise ArgumentError, argument_error_message if num > args.length
    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 ]



1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
 
# File 'lib/nendo.rb', line 1638

def toRubyParameter( argform )
  argsyms = []
  locals = []
  rest = false
  if Symbol == argform.class
    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 



1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
 
# File 'lib/nendo.rb', line 1421

def toRubySymbol( name )
  name = name.to_s  if Symbol == name.class
  if 0 == name.length
    ""
  else
    name.gsub!( Regexp.new( Regexp.escape( '...' )), @char_table_lisp_to_ruby[ '...' ] )
    arr = name.gsub( /["]/, '' ).split( /[.]/ )
    tmp = arr[0]
    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

#toRubyValue(val) ⇒ Object 



1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
 
# File 'lib/nendo.rb', line 1409

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 



1497
1498
1499
1500
1501
1502
1503
1504
1505
 
# File 'lib/nendo.rb', line 1497

def trampCall( result )
  while result.is_a? DelayedCallPacket
    @tmp_origname = result.origname
    @tmp_pred     = result.pred
    @tmp_args     = result.args
    result = eval( sprintf( "self.%s( @tmp_origname, @tmp_pred, @tmp_args )", result.rubysym + "_METHOD" ), @binding )
  end
  result
end

#trampCallCap(sym) ⇒ Object 



1799
1800
1801
1802
1803
1804
1805
1806
1807
 
# File 'lib/nendo.rb', line 1799

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

#translate(sexp, 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.



1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
 
# File 'lib/nendo.rb', line 1846

def translate( sexp, locals, sourceInfo = nil )
  case sexp
  when Cell
    inv = @core_syntax_hash.invert
    car = if inv.has_key?( sexp.car )
            inv[ sexp.car ]
          else
            sexp.car
          end
    if :quote == car or :"syntax-quote" == car
      genQuote( sexp.cdr.car )
    elsif sexp.isDotted
      raise NameError, "Error: can't eval dotted pair."
    elsif sexp.isNull
      [ "Cell.new()" ]
    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 )
    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 :"%tailcall" == car
      if sexp.cdr.car.is_a? Cell
        sexp = sexp.cdr.car
        self.apply( sexp.car, sexp.cdr, sexp.car.sourcefile, sexp.car.lineno, locals, sourceInfo, EXEC_TYPE_TAILCALL )
      else
        raise RuntimeError, "Error: special form tailcall expects function call expression."
      end
    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 sexp
    when Symbol
      sym = sexp.to_s
      sym = toRubySymbol( sym )
      lispSymbolReference( sym, locals, nil, sexp.sourcefile, sexp.lineno )
    when Fixnum
      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 )
    else
      sexp.to_s
    end
  end
end