WARNING! Access to this system is limited to authorised users only.
Unauthorised users may be subject to prosecution.
Unauthorised access to this system is a criminal offence under Australian law (Federal Crimes Act 1914 Part VIA)
It is a criminal offence to:
(1) Obtain access to data without authority. -Penalty 2 years imprisonment.
(2) Damage, delete, alter or insert data without authority. -Penalty 10 years imprisonment.
User activity is monitored and recorded. Anyone using this system expressly consents to such monitoring and recording.

universe.py 22 KB
Newer Older
Tobias Pape's avatar
Tobias Pape committed
1 2
from rpython.rlib.rrandom import Random

Stefan Marr's avatar
Stefan Marr committed
3
from som.interpreter.interpreter import Interpreter
Stefan Marr's avatar
Stefan Marr committed
4
from som.interpreter.bytecodes   import Bytecodes 
Stefan Marr's avatar
Stefan Marr committed
5 6
from som.vm.symbol_table         import SymbolTable
from som.vmobjects.object        import Object
7 8 9
from som.vmobjects.clazz         import Class
from som.vmobjects.array         import Array
from som.vmobjects.symbol        import Symbol
Stefan Marr's avatar
Stefan Marr committed
10
from som.vmobjects.method        import Method
Stefan Marr's avatar
Stefan Marr committed
11
from som.vmobjects.integer       import Integer
12
from som.vmobjects.string        import String
13
from som.vmobjects.block         import Block, block_evaluation_primitive
14
from som.vmobjects.frame         import Frame
15
from som.vmobjects.biginteger    import BigInteger
16
from som.vmobjects.double        import Double
Stefan Marr's avatar
Stefan Marr committed
17

Stefan Marr's avatar
Stefan Marr committed
18 19
from som.vm.shell import Shell

20 21
import som.compiler.sourcecode_compiler as sourcecode_compiler

Stefan Marr's avatar
Stefan Marr committed
22
import os
Tobias Pape's avatar
Tobias Pape committed
23 24
import time

25

26 27
from rlib.exit  import Exit
from rlib.osext import path_split
Stefan Marr's avatar
Stefan Marr committed
28 29 30

class Universe(object):
    
31
    def __init__(self, avoid_exit = False):
Stefan Marr's avatar
Stefan Marr committed
32 33 34 35 36
        self._interpreter    = Interpreter(self)
        self._symbol_table   = SymbolTable()
        
        self._globals        = {}
        
Tobias Pape's avatar
Tobias Pape committed
37 38 39 40 41 42
        self.nilObject      = None
        self.trueObject     = None
        self.falseObject    = None
        self.objectClass    = None
        self.classClass     = None
        self.metaclassClass = None
Stefan Marr's avatar
Stefan Marr committed
43
        
Tobias Pape's avatar
Tobias Pape committed
44 45 46 47 48 49 50 51 52 53 54 55
        self.nilClass       = None
        self.integerClass   = None
        self.bigintegerClass= None
        self.arrayClass     = None
        self.methodClass    = None
        self.symbolClass    = None
        self.frameClass     = None
        self.primitiveClass = None
        self.systemClass    = None
        self.blockClass     = None
        self.stringClass    = None
        self.doubleClass    = None
Stefan Marr's avatar
Stefan Marr committed
56 57
        
        self._last_exit_code = 0
58
        self._avoid_exit     = avoid_exit
Tobias Pape's avatar
Tobias Pape committed
59
        self._dump_bytecodes = False
Stefan Marr's avatar
Stefan Marr committed
60
        self.classpath       = None
Tobias Pape's avatar
Tobias Pape committed
61 62 63
        self.start_time      = time.time() # a float of the time in seconds
        self.random          = Random(abs(int(time.clock() * time.time())))

64

65 66 67 68
    def exit(self, error_code):
        if self._avoid_exit:
            self._last_exit_code = error_code
        else:
69
            raise Exit(error_code)
70 71 72 73
    
    def last_exit_code(self):
        return self._last_exit_code
    
74 75 76
    def get_interpreter(self):
        return self._interpreter
    
77 78 79 80 81 82 83 84 85 86
    def execute_method(self, class_name, selector):
        self._initialize_object_system()

        clazz = self.load_class(self.symbol_for(class_name))

        # Lookup the invokable on class
        invokable = clazz.get_class().lookup_invokable(self.symbol_for(selector))

        bootstrap_method = self._create_bootstrap_method()
        bootstrap_frame  = self._create_bootstrap_frame(bootstrap_method, clazz)
Stefan Marr's avatar
Stefan Marr committed
87
        
88
        return self.start(bootstrap_frame, invokable)
Stefan Marr's avatar
Stefan Marr committed
89
    
90 91
    def _create_bootstrap_method(self):
        # Create a fake bootstrap method to simplify later frame traversal
92 93 94
        bootstrap_method = self.new_method(self.symbol_for("bootstrap"), 1, 0,
                                           self.new_integer(0),
                                           self.new_integer(2))
95
        bootstrap_method.set_bytecode(0, Bytecodes.halt)
Tobias Pape's avatar
Tobias Pape committed
96
        bootstrap_method.set_holder(self.systemClass)
97
        return bootstrap_method
98
    
99 100
    def _create_bootstrap_frame(self, bootstrap_method, receiver, arguments = None):
        # Create a fake bootstrap frame with the system object on the stack
101
        bootstrap_frame = self._interpreter.push_new_frame(bootstrap_method, self.nilObject)
102 103 104
        bootstrap_frame.push(receiver)
        
        if arguments:
105
            bootstrap_frame.push(arguments)
106
        return bootstrap_frame
107 108
        
    
Stefan Marr's avatar
Stefan Marr committed
109 110
    def interpret(self, arguments):
        # Check for command line switches
111
        arguments = self.handle_arguments(arguments)
Stefan Marr's avatar
Stefan Marr committed
112 113

        # Initialize the known universe
114 115
        system_object = self._initialize_object_system()
        bootstrap_method = self._create_bootstrap_method()
Stefan Marr's avatar
Stefan Marr committed
116
        
117 118 119 120 121 122 123
        # Start the shell if no filename is given
        if len(arguments) == 0:
            shell = Shell(self, self._interpreter)
            shell.set_bootstrap_method(bootstrap_method)
            shell.start()
            return
        else:
124 125 126
            # Convert the arguments into an array
            arguments_array = self.new_array_with_strings(arguments)
            bootstrap_frame = self._create_bootstrap_frame(bootstrap_method, system_object, arguments_array)
127
            # Lookup the initialize invokable on the system class
Tobias Pape's avatar
Tobias Pape committed
128
            initialize = self.systemClass.lookup_invokable(self.symbol_for("initialize:"))
129 130 131 132 133 134 135 136 137

            self.start(bootstrap_frame, initialize)
    
    def start(self, bootstrap_frame, invokable):
        # Invoke the initialize invokable
        invokable.invoke(bootstrap_frame, self._interpreter)

        # Start the interpreter
        return self._interpreter.start()
Stefan Marr's avatar
Stefan Marr committed
138
    
139
    def handle_arguments(self, arguments):
Stefan Marr's avatar
Stefan Marr committed
140 141 142 143 144 145 146 147
        got_classpath  = False
        remaining_args = []

        i = 0
        while i < len(arguments):
            if arguments[i] == "-cp":
                if i + 1 >= len(arguments):
                    self._print_usage_and_exit()
148
                self.setup_classpath(arguments[i + 1])
Stefan Marr's avatar
Stefan Marr committed
149 150 151 152
                i += 1    # skip class path
                got_classpath = True
            elif arguments[i] == "-d":
                self._dump_bytecodes = True
Tobias Pape's avatar
Tobias Pape committed
153 154
            elif arguments[i] in ["-h", "--help", "-?"]:
                self._print_usage_and_exit()
Stefan Marr's avatar
Stefan Marr committed
155 156
            else:
                remaining_args.append(arguments[i])
Tobias Pape's avatar
Tobias Pape committed
157
            i += 1
Stefan Marr's avatar
Stefan Marr committed
158 159 160
    
        if not got_classpath:
            # Get the default class path of the appropriate size
Tobias Pape's avatar
Tobias Pape committed
161
            self.classpath = self._setup_default_classpath()
Stefan Marr's avatar
Stefan Marr committed
162 163 164 165 166 167 168

        # check remaining args for class paths, and strip file extension
        i = 0
        while i < len(remaining_args):
            split = self._get_path_class_ext(remaining_args[i])

            if split[0] != "":  # there was a path
Tobias Pape's avatar
Tobias Pape committed
169
                self.classpath.insert(0, split[0])
Stefan Marr's avatar
Stefan Marr committed
170 171 172 173 174 175
        
            remaining_args[i] = split[1]
            i += 1
        
        return remaining_args
    
176
    def setup_classpath(self, cp):
Tobias Pape's avatar
Tobias Pape committed
177
        self.classpath = cp.split(os.pathsep)
Stefan Marr's avatar
Stefan Marr committed
178
    
179 180 181
    def _setup_default_classpath(self):
        return ['.']
    
Stefan Marr's avatar
Stefan Marr committed
182 183 184
    # take argument of the form "../foo/Test.som" and return
    # "../foo", "Test", "som"
    def _get_path_class_ext(self, path):
185
        return path_split(path)
186 187 188
    
    def _print_usage_and_exit(self):
        # Print the usage
189 190 191 192
        std_println("Usage: som [-options] [args...]                          ")
        std_println("                                                         ")
        std_println("where options include:                                   ")
        std_println("    -cp <directories separated by " + os.pathsep     + ">")
Tobias Pape's avatar
Tobias Pape committed
193 194 195
        std_println("        set search path for application classes")
        std_println("    -d  enable disassembling")
        std_println("    -h  print this help")
196 197 198

        # Exit
        self.exit(0)
Stefan Marr's avatar
Stefan Marr committed
199

200
    def _initialize_object_system(self):
Stefan Marr's avatar
Stefan Marr committed
201
        # Allocate the nil object
Tobias Pape's avatar
Tobias Pape committed
202
        self.nilObject = Object(None)
Stefan Marr's avatar
Stefan Marr committed
203 204

        # Allocate the Metaclass classes
Tobias Pape's avatar
Tobias Pape committed
205
        self.metaclassClass = self.new_metaclass_class()
Stefan Marr's avatar
Stefan Marr committed
206 207

        # Allocate the rest of the system classes
Tobias Pape's avatar
Tobias Pape committed
208 209 210 211 212 213 214 215 216 217 218 219
        self.objectClass     = self.new_system_class()
        self.nilClass        = self.new_system_class()
        self.classClass      = self.new_system_class()
        self.arrayClass      = self.new_system_class()
        self.symbolClass     = self.new_system_class()
        self.methodClass     = self.new_system_class()
        self.integerClass    = self.new_system_class()
        self.bigintegerClass = self.new_system_class()
        self.frameClass      = self.new_system_class()
        self.primitiveClass  = self.new_system_class()
        self.stringClass     = self.new_system_class()
        self.doubleClass     = self.new_system_class()
Stefan Marr's avatar
Stefan Marr committed
220 221

        # Setup the class reference for the nil object
Tobias Pape's avatar
Tobias Pape committed
222
        self.nilObject.set_class(self.nilClass)
Stefan Marr's avatar
Stefan Marr committed
223 224

        # Initialize the system classes
Tobias Pape's avatar
Tobias Pape committed
225 226 227 228 229 230 231 232 233 234 235 236 237
        self._initialize_system_class(self.objectClass,                 None, "Object")
        self._initialize_system_class(self.classClass,      self.objectClass, "Class")
        self._initialize_system_class(self.metaclassClass,   self.classClass, "Metaclass")
        self._initialize_system_class(self.nilClass,        self.objectClass, "Nil")
        self._initialize_system_class(self.arrayClass,      self.objectClass, "Array")
        self._initialize_system_class(self.methodClass,      self.arrayClass, "Method")
        self._initialize_system_class(self.symbolClass,     self.objectClass, "Symbol")
        self._initialize_system_class(self.integerClass,    self.objectClass, "Integer")
        self._initialize_system_class(self.bigintegerClass, self.objectClass, "BigInteger")
        self._initialize_system_class(self.frameClass,       self.arrayClass, "Frame")
        self._initialize_system_class(self.primitiveClass,  self.objectClass, "Primitive")
        self._initialize_system_class(self.stringClass,     self.objectClass, "String")
        self._initialize_system_class(self.doubleClass,     self.objectClass, "Double")
Stefan Marr's avatar
Stefan Marr committed
238 239

        # Load methods and fields into the system classes
Tobias Pape's avatar
Tobias Pape committed
240 241 242 243 244 245 246 247 248 249 250 251 252
        self._load_system_class(self.objectClass)
        self._load_system_class(self.classClass)
        self._load_system_class(self.metaclassClass)
        self._load_system_class(self.nilClass)
        self._load_system_class(self.arrayClass)
        self._load_system_class(self.methodClass)
        self._load_system_class(self.symbolClass)
        self._load_system_class(self.integerClass)
        self._load_system_class(self.bigintegerClass)
        self._load_system_class(self.frameClass)
        self._load_system_class(self.primitiveClass)
        self._load_system_class(self.stringClass)
        self._load_system_class(self.doubleClass)
Stefan Marr's avatar
Stefan Marr committed
253 254

        # Load the generic block class
Tobias Pape's avatar
Tobias Pape committed
255
        self.blockClass = self.load_class(self.symbol_for("Block"))
Stefan Marr's avatar
Stefan Marr committed
256 257

        # Setup the true and false objects
258 259 260 261 262 263 264
        trueClassName    = self.symbol_for("True")
        trueClass        = self.load_class(trueClassName)
        self.trueObject  = self.new_instance(trueClass)
        
        falseClassName   = self.symbol_for("False")
        falseClass       = self.load_class(falseClassName)
        self.falseObject = self.new_instance(falseClass)
Stefan Marr's avatar
Stefan Marr committed
265 266

        # Load the system class and create an instance of it
Tobias Pape's avatar
Tobias Pape committed
267 268
        self.systemClass = self.load_class(self.symbol_for("System"))
        system_object = self.new_instance(self.systemClass)
Stefan Marr's avatar
Stefan Marr committed
269 270

        # Put special objects and classes into the dictionary of globals
Tobias Pape's avatar
Tobias Pape committed
271 272 273
        self.set_global(self.symbol_for("nil"),    self.nilObject)
        self.set_global(self.symbol_for("true"),   self.trueObject)
        self.set_global(self.symbol_for("false"),  self.falseObject)
274
        self.set_global(self.symbol_for("system"), system_object)
Tobias Pape's avatar
Tobias Pape committed
275 276
        self.set_global(self.symbol_for("System"), self.systemClass)
        self.set_global(self.symbol_for("Block"),  self.blockClass)
277 278 279 280 281 282
        
        self.set_global(self.symbol_for("Nil"),    self.nilClass)
        
        self.set_global( trueClassName,  trueClass)
        self.set_global(falseClassName, falseClass)
        
283 284
        return system_object
    
285 286 287 288 289 290 291 292 293
    def symbol_for(self, string):
        # Lookup the symbol in the symbol table
        result = self._symbol_table.lookup(string)
        if result:
            return result
        
        # Create a new symbol and return it
        result = self.new_symbol(string)
        return result
294 295 296
    
    def new_array_with_length(self, length):
        # Allocate a new array and set its class to be the array class
297
        result = Array(self.nilObject, length)
Tobias Pape's avatar
Tobias Pape committed
298
        result.set_class(self.arrayClass)
299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323

        # Return the freshly allocated array
        return result
  
    def new_array_from_list(self, values):
        # Allocate a new array with the same length as the list
        result = self.new_array_with_length(len(values))

        # Copy all elements from the list into the array
        for i in range(len(values)):
            result.set_indexable_field(i, values[i])
    
        # Return the allocated and initialized array
        return result
  
    def new_array_with_strings(self, strings):
        # Allocate a new array with the same length as the string array
        result = self.new_array_with_length(len(strings))

        # Copy all elements from the string array into the array
        for i in range(len(strings)):
            result.set_indexable_field(i, self.new_string(strings[i]))
    
        # Return the allocated and initialized array
        return result
324
    
325 326
    def new_block(self, method, context_frame, arguments):
        # Allocate a new block and set its class to be the block class
327
        result = Block(self.nilObject, method, context_frame)
328 329 330 331 332 333 334
        result.set_class(self._get_block_class(arguments))

        # Return the freshly allocated block
        return result

    def new_class(self, class_class):
        # Allocate a new class and set its class to be the given class class
Stefan Marr's avatar
Stefan Marr committed
335
        result = Class(self, class_class.get_number_of_instance_fields())
336 337 338 339 340
        result.set_class(class_class)

        # Return the freshly allocated class
        return result

341
    def new_frame(self, previous_frame, method, context):
342 343 344 345 346 347 348
        # Compute the maximum number of stack locations (including arguments,
        # locals and extra buffer to support doesNotUnderstand) and set the
        # number of indexable fields accordingly
        length = (method.get_number_of_arguments() +
                  method.get_number_of_locals().get_embedded_integer() +
                  method.get_maximum_number_of_stack_elements().get_embedded_integer() + 2)

349 350 351
        # Allocate a new frame and set its class to be the frame class
        result = Frame(self.nilObject, length, method, context, previous_frame)
        result.set_class(self.frameClass)
352 353 354 355 356 357 358 359

        # Reset the stack pointer and the bytecode index
        result.reset_stack_pointer()
        result.set_bytecode_index(0)

        # Return the freshly allocated frame
        return result

360 361
    def new_method(self, signature, num_bytecodes, num_literals,
                   num_locals, maximum_number_of_stack_elements):
362
        # Allocate a new method and set its class to be the method class
363 364 365 366 367 368
        result = Method(self.nilObject,
                        num_literals,
                        num_locals,
                        maximum_number_of_stack_elements,
                        num_bytecodes,
                        signature)
Tobias Pape's avatar
Tobias Pape committed
369
        result.set_class(self.methodClass)
370 371 372 373 374 375

        # Return the freshly allocated method
        return result

    def new_instance(self, instance_class):
        # Allocate a new instance and set its class to be the given class
Tobias Pape's avatar
Tobias Pape committed
376
        result = Object(self.nilObject, instance_class.get_number_of_instance_fields())
377 378 379 380 381 382 383
        result.set_class(instance_class)
 
        # Return the freshly allocated instance
        return result

 
    def new_integer(self, value):
Tobias Pape's avatar
Tobias Pape committed
384
        assert isinstance(value, int)
385
        # Allocate a new integer and set its class to be the integer class
386
        result = Integer(self.nilObject, value)
Tobias Pape's avatar
Tobias Pape committed
387
        result.set_class(self.integerClass)
388 389 390 391
     
        # Return the freshly allocated integer
        return result
 
392
    def new_biginteger(self, value):
393
        # Allocate a new integer and set its class to be the integer class
394
        result = BigInteger(self.nilObject, value)
Tobias Pape's avatar
Tobias Pape committed
395
        result.set_class(self.bigintegerClass)
396 397 398 399 400 401 402
 
        # Return the freshly allocated integer
        return result
 
 
    def new_double(self, value):
        # Allocate a new integer and set its class to be the double class
403
        result = Double(self.nilObject, value)
Tobias Pape's avatar
Tobias Pape committed
404
        result.set_class(self.doubleClass)
405 406 407 408
 
        # Return the freshly allocated double
        return result
    
409 410 411 412 413 414 415 416 417 418
    def new_metaclass_class(self):
        # Allocate the metaclass classes
        result = Class(self)
        result.set_class(Class(self))

        # Setup the metaclass hierarchy
        result.get_class().set_class(result)

        # Return the freshly allocated metaclass class
        return result
419 420 421

    def new_string(self, embedded_string):
        # Allocate a new string and set its class to be the string class
422
        result = String(self.nilObject, embedded_string)
Tobias Pape's avatar
Tobias Pape committed
423
        result.set_class(self.stringClass)
424
  
425 426
        # Return the freshly allocated string
        return result
427
    
428 429
    def new_symbol(self, string):
        # Allocate a new symbol and set its class to be the symbol class
430
        result = Symbol(self.nilObject, string)
Tobias Pape's avatar
Tobias Pape committed
431
        result.set_class(self.symbolClass)
432 433 434 435 436 437 438

        # Insert the new symbol into the symbol table
        self._symbol_table.insert(result)

        # Return the freshly allocated symbol
        return result
      
439 440 441 442 443 444
    def new_system_class(self):
        # Allocate the new system class
        system_class = Class(self)

        # Setup the metaclass hierarchy
        system_class.set_class(Class(self))
Tobias Pape's avatar
Tobias Pape committed
445
        system_class.get_class().set_class(self.metaclassClass)
446 447 448 449 450 451 452

        # Return the freshly allocated system class
        return system_class
    
    def _initialize_system_class(self, system_class, super_class, name):
        # Initialize the superclass hierarchy
        if super_class:
453
            system_class.set_super_class(super_class)
454 455
            system_class.get_class().set_super_class(super_class.get_class())
        else:
Tobias Pape's avatar
Tobias Pape committed
456
            system_class.get_class().set_super_class(self.classClass)
457 458 459 460 461 462 463 464 465 466 467 468
    

        # Initialize the array of instance fields
        system_class.set_instance_fields(self.new_array_with_length(0))
        system_class.get_class().set_instance_fields(self.new_array_with_length(0))

        # Initialize the array of instance invokables
        system_class.set_instance_invokables(self.new_array_with_length(0))
        system_class.get_class().set_instance_invokables(self.new_array_with_length(0))

        # Initialize the name of the system class
        system_class.set_name(self.symbol_for(name))
469
        system_class.get_class().set_name(self.symbol_for(name + " class"))
470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490

        # Insert the system class into the dictionary of globals
        self.set_global(system_class.get_name(), system_class)
    
    
    def get_global(self, name):
        # Return the global with the given name if it's in the dictionary of globals
        if self.has_global(name):
            return self._globals[name]

        # Global not found
        return None

    def set_global(self, name, value):
        # Insert the given value into the dictionary of globals
        self._globals[name] = value
  

    def has_global(self, name):
        # Returns if the universe has a value for the global of the given name
        return name in self._globals
491
    
492
    def _get_block_class(self, number_of_arguments = None):
493 494
        if not number_of_arguments:
            # Get the generic block class
Tobias Pape's avatar
Tobias Pape committed
495
            return self.blockClass
496 497 498 499 500 501 502 503 504 505 506
        
        # Compute the name of the block class with the given number of
        # arguments
        name = self.symbol_for("Block" + str(number_of_arguments))

        # Lookup the specific block class in the dictionary of globals and
        # return it
        if self.has_global(name):
            return self.get_global(name)

        # Get the block class for blocks with the given number of arguments
Stefan Marr's avatar
Stefan Marr committed
507
        result = self._load_class(name, None)
508 509

        # Add the appropriate value primitive to the block class
510
        result.add_instance_primitive(block_evaluation_primitive(number_of_arguments, self))
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535

        # Insert the block class into the dictionary of globals
        self.set_global(name, result)

        # Return the loaded block class
        return result

    def load_class(self, name):
        # Check if the requested class is already in the dictionary of globals
        if self.has_global(name):
            return self.get_global(name)

        # Load the class
        result = self._load_class(name, None)

        # Load primitives (if necessary) and return the resulting class
        if result and result.has_primitives():
            result.load_primitives()
    
        return result

    def _load_system_class(self, system_class):
        # Load the system class
        result = self._load_class(system_class.get_name(), system_class)

536 537 538 539 540 541 542
        if not result:
            error_println(system_class.get_name().get_string()
                   + " class could not be loaded. It is likely that the "
                   + " class path has not been initialized properly. "
                   + "Please make sure that the '-cp' parameter is given on the command-line.")
            self.exit(200)

543 544 545 546 547 548
        # Load primitives if necessary
        if result.has_primitives():
            result.load_primitives()

    def _load_class(self, name, system_class):
        # Try loading the class from all different paths
Tobias Pape's avatar
Tobias Pape committed
549
        for cpEntry in self.classpath:
550 551
            try:
                # Load the class from a file and return the loaded class
552
                result = sourcecode_compiler.compile_class_from_file(cpEntry, name.get_string(), system_class, self)
553
                if self._dump_bytecodes:
554 555 556
                    from som.compiler.disassembler import dump
                    dump(result.get_class())
                    dump(result)
557 558 559 560 561 562 563 564

                return result
            except IOError:
                # Continue trying different paths
                pass

        # The class could not be found.
        return None
565 566 567 568
    
    def load_shell_class(self, stmt):
        # Load the class from a stream and return the loaded class
        result = sourcecode_compiler.compile_class_from_string(stmt, None, self)
Stefan Marr's avatar
Stefan Marr committed
569
        if self._dump_bytecodes:
570 571
            from som.compiler.disassembler import dump
            dump(result)
572 573
        return result

574
def error_print(msg):
575
    os.write(2, msg)
576

577
def error_println(msg = ""):
578
    os.write(2, msg + "\n")
579

580
def std_print(msg):
581
    print msg,
582

583
def std_println(msg=""):
584 585
    print msg

586 587 588 589 590 591
def main(args):
    u = Universe()
    u.interpret(args[1:])
    u.exit(0)

if __name__ == '__main__':
592 593 594 595 596
    import sys
    try:
        main(sys.argv)
    except Exit as e:
        sys.exit(e.code)