def eval(self, ctx):
obj = to_object(ctx.stack.pop(), ctx.space)
with_context = Scope(obj, ctx.space, ctx) # todo actually use the obj to modify the ctx
with_context.THIS_BINDING = ctx.THIS_BINDING
status = ctx.space.exe.execute_fragment_under_context(with_context, self.beg_label, self.end_label)
val, typ, spec = status
if typ != 3: # exception
ctx.stack.pop()
if typ == 0: # normal
ctx.stack.append(val)
return
elif typ == 1: # return
ctx.stack.append(spec)
return None, None # send return signal
elif typ == 2: # jump outside
ctx.stack.append(val)
return spec
elif typ == 3: # exception
# throw is made with empty stack as usual
raise spec
else:
raise RuntimeError('Invalid return code')
def eval(self, ctx):
obj = to_object(ctx.stack.pop(), ctx.space)
with_context = Scope(
obj, ctx.space, ctx) # todo actually use the obj to modify the ctx
with_context.THIS_BINDING = ctx.THIS_BINDING
status = ctx.space.exe.execute_fragment_under_context(
with_context, self.beg_label, self.end_label)
val, typ, spec = status
if typ != 3: # exception
ctx.stack.pop()
if typ == 0: # normal
ctx.stack.append(val)
return
elif typ == 1: # return
ctx.stack.append(spec)
return None, None # send return signal
elif typ == 2: # jump outside
ctx.stack.append(val)
return spec
elif typ == 3: # exception
# throw is made with empty stack as usual
raise spec
else:
raise RuntimeError('Invalid return code')
def __init__(self, name, base, decors):
self.name = name
self.base = base
self.decors = decors
self.isScope = True
Statement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
def __init__(self, name, base, decors):
self.name = name
self.base = base
self.decors = decors
self.isScope = True
Statement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
def eval(self, ctx):
# 4 different exectution results
# 0=normal, 1=return, 2=jump_outside, 3=errors
# execute_fragment_under_context returns:
# (return_value, typ, jump_loc/error)
ctx.stack.pop()
# execute try statement
try_status = ctx.space.exe.execute_fragment_under_context(
ctx, self.try_label, self.catch_label)
errors = try_status[1] == 3
# catch
if errors and self.catch_variable is not None:
# generate catch block context...
catch_context = Scope(
{
self.catch_variable: try_status[2].get_thrown_value(
ctx.space)
}, ctx.space, ctx)
catch_context.THIS_BINDING = ctx.THIS_BINDING
catch_status = ctx.space.exe.execute_fragment_under_context(
catch_context, self.catch_label, self.finally_label)
else:
catch_status = None
# finally
if self.finally_present:
finally_status = ctx.space.exe.execute_fragment_under_context(
ctx, self.finally_label, self.end_label)
else:
finally_status = None
# now return controls
other_status = catch_status or try_status
if finally_status is None or (finally_status[1] == 0
and other_status[1] != 0):
winning_status = other_status
else:
winning_status = finally_status
val, typ, spec = winning_status
if typ == 0: # normal
ctx.stack.append(val)
return
elif typ == 1: # return
ctx.stack.append(spec)
return None, None # send return signal
elif typ == 2: # jump outside
ctx.stack.append(val)
return spec
elif typ == 3:
# throw is made with empty stack as usual
raise spec
else:
raise RuntimeError('Invalid return code')
def __init__(self, file, name=None):
ScriptElement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
self._file = file
self.builtin = False
if name:
self.name = name
else:
self.name = "main"
def __init__(self, file, name=None):
ScriptElement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
self._file = file
self.builtin = False
if name:
self.name = name
else:
self.name = "main"
def __init__(self, name, args, decors):
Statement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
self.name = name
self.args = args
self.decors = decors
self.locals = []
self.isScope = True
a = self.locals.append
for arg in self.args:
a(arg.id)
def __init__(self, name, args, decors):
Statement.__init__(self)
HasChildren.__init__(self)
Scope.__init__(self)
self.name = name
self.args = args
self.decors = decors
self.locals = []
self.isScope = True
a = self.locals.append
for arg in self.args:
a(arg.id)
def eval(self, ctx):
# 4 different exectution results
# 0=normal, 1=return, 2=jump_outside, 3=errors
# execute_fragment_under_context returns:
# (return_value, typ, jump_loc/error)
ctx.stack.pop()
# execute try statement
try_status = ctx.space.exe.execute_fragment_under_context(ctx, self.try_label, self.catch_label)
errors = try_status[1] == 3
# catch
if errors and self.catch_variable is not None:
# generate catch block context...
catch_context = Scope({self.catch_variable: try_status[2].get_thrown_value(ctx.space)}, ctx.space, ctx)
catch_context.THIS_BINDING = ctx.THIS_BINDING
catch_status = ctx.space.exe.execute_fragment_under_context(catch_context, self.catch_label, self.finally_label)
else:
catch_status = None
# finally
if self.finally_present:
finally_status = ctx.space.exe.execute_fragment_under_context(ctx, self.finally_label, self.end_label)
else:
finally_status = None
# now return controls
other_status = catch_status or try_status
if finally_status is None or (finally_status[1]==0 and other_status[1]!=0):
winning_status = other_status
else:
winning_status = finally_status
val, typ, spec = winning_status
if typ == 0: # normal
ctx.stack.append(val)
return
elif typ == 1: # return
ctx.stack.append(spec)
return None, None # send return signal
elif typ == 2: # jump outside
ctx.stack.append(val)
return spec
elif typ == 3:
# throw is made with empty stack as usual
raise spec
else:
raise RuntimeError('Invalid return code')
def create_signature(self, ret_type, params, cv):
exacts, scores = self.score_signatures(ret_type, params, cv)
if len(exacts) > 1:
raise Exception('Ambiguous signature '
+ str([self.signatures[i] for i in exacts]))
if len(exacts) == 1:
return exacts[0]
if len(exacts) == 0:
print "No exact match. close matches", scores
self.signatures.append((ret_type, [p.type for p in params], cv))
ret = len(self.signatures) - 1
scope = Scope(None, self.owner)
self.scopes.append(scope)
for p in params:
scope.add(p)
return ret
def fill_space(space, byte_generator):
# set global scope
global_scope = Scope({}, space, parent=None)
global_scope.THIS_BINDING = global_scope
global_scope.registers(byte_generator.declared_vars)
space.GlobalObj = global_scope
space.byte_generator = byte_generator
# first init all protos, later take care of constructors and details
# Function must be first obviously, we have to use a small trick to do that...
function_proto = space.NewFunction(Empty, space.ctx, (), 'Empty', False,
())
space.FunctionPrototype = function_proto # this will fill the prototypes of the methods!
fill_proto(function_proto, FunctionPrototype, space)
# Object next
object_proto = space.NewObject() # no proto
fill_proto(object_proto, ObjectPrototype, space)
space.ObjectPrototype = object_proto
function_proto.prototype = object_proto
# Number
number_proto = space.NewObject()
number_proto.prototype = object_proto
fill_proto(number_proto, NumberPrototype, space)
number_proto.value = 0.
number_proto.Class = 'Number'
space.NumberPrototype = number_proto
# String
string_proto = space.NewObject()
string_proto.prototype = object_proto
fill_proto(string_proto, StringPrototype, space)
string_proto.value = u''
string_proto.Class = 'String'
space.StringPrototype = string_proto
# Boolean
boolean_proto = space.NewObject()
boolean_proto.prototype = object_proto
fill_proto(boolean_proto, BooleanPrototype, space)
boolean_proto.value = False
boolean_proto.Class = 'Boolean'
space.BooleanPrototype = boolean_proto
# Array
array_proto = space.NewArray(0)
array_proto.prototype = object_proto
fill_proto(array_proto, ArrayPrototype, space)
space.ArrayPrototype = array_proto
# JSON
json = space.NewObject()
json.put(u'stringify', easy_func(jsjson.stringify, space))
json.put(u'parse', easy_func(jsjson.parse, space))
# Utils
parseFloat = easy_func(jsutils.parseFloat, space)
parseInt = easy_func(jsutils.parseInt, space)
isNaN = easy_func(jsutils.isNaN, space)
isFinite = easy_func(jsutils.isFinite, space)
# Error
error_proto = space.NewError(u'Error', u'')
error_proto.prototype = object_proto
error_proto.put(u'name', u'Error')
fill_proto(error_proto, ErrorPrototype, space)
space.ErrorPrototype = error_proto
def construct_constructor(typ):
def creator(this, args):
message = get_arg(args, 0)
if not is_undefined(message):
msg = to_string(message)
else:
msg = u''
return space.NewError(typ, msg)
j = easy_func(creator, space)
j.name = unicode(typ)
j.prototype = space.ERROR_TYPES[typ]
def new_create(args, space):
message = get_arg(args, 0)
if not is_undefined(message):
msg = to_string(message)
else:
msg = u''
return space.NewError(typ, msg)
j.create = new_create
return j
# fill remaining error types
error_constructors = {}
for err_type_name in (u'Error', u'EvalError', u'RangeError',
u'ReferenceError', u'SyntaxError', u'TypeError',
u'URIError'):
extra_err = space.NewError(u'Error', u'')
extra_err.put(u'name', err_type_name)
setattr(space, err_type_name + u'Prototype', extra_err)
error_constructors[err_type_name] = construct_constructor(
err_type_name)
assert space.TypeErrorPrototype is not None
# RegExp
regexp_proto = space.NewRegExp(u'(?:)', u'')
regexp_proto.prototype = object_proto
fill_proto(regexp_proto, RegExpPrototype, space)
space.RegExpPrototype = regexp_proto
# Json
# now all these boring constructors...
# Number
number = easy_func(jsnumber.Number, space)
space.Number = number
number.create = jsnumber.NumberConstructor
set_non_enumerable(number_proto, 'constructor', number)
set_protected(number, 'prototype', number_proto)
# number has some extra constants
for k, v in jsnumber.CONSTS.items():
set_protected(number, k, v)
# String
string = easy_func(jsstring.String, space)
space.String = string
string.create = jsstring.StringConstructor
set_non_enumerable(string_proto, 'constructor', string)
set_protected(string, 'prototype', string_proto)
# string has an extra function
set_non_enumerable(string, 'fromCharCode',
easy_func(jsstring.fromCharCode, space))
# Boolean
boolean = easy_func(jsboolean.Boolean, space)
space.Boolean = boolean
boolean.create = jsboolean.BooleanConstructor
set_non_enumerable(boolean_proto, 'constructor', boolean)
set_protected(boolean, 'prototype', boolean_proto)
# Array
array = easy_func(jsarray.Array, space)
space.Array = array
array.create = jsarray.ArrayConstructor
set_non_enumerable(array_proto, 'constructor', array)
set_protected(array, 'prototype', array_proto)
array.put(u'isArray', easy_func(jsarray.isArray, space))
# RegExp
regexp = easy_func(jsregexp.RegExp, space)
space.RegExp = regexp
regexp.create = jsregexp.RegExpCreate
set_non_enumerable(regexp_proto, 'constructor', regexp)
set_protected(regexp, 'prototype', regexp_proto)
# Object
_object = easy_func(jsobject.Object, space)
space.Object = _object
_object.create = jsobject.ObjectCreate
set_non_enumerable(object_proto, 'constructor', _object)
set_protected(_object, 'prototype', object_proto)
fill_proto(_object, jsobject.ObjectMethods, space)
# Function
function = easy_func(jsfunction.Function, space)
space.Function = function
# Math
math = space.NewObject()
math.Class = 'Math'
fill_proto(math, jsmath.MathFunctions, space)
for k, v in jsmath.CONSTANTS.items():
set_protected(math, k, v)
console = space.NewObject()
fill_proto(console, jsconsole.ConsoleMethods, space)
# set global object
builtins = {
'String': string,
'Number': number,
'Boolean': boolean,
'RegExp': regexp,
'exports': convert_to_js_type({}, space),
'Math': math,
#'Date',
'Object': _object,
'Function': function,
'JSON': json,
'Array': array,
'parseFloat': parseFloat,
'parseInt': parseInt,
'isFinite': isFinite,
'isNaN': isNaN,
'eval': easy_func(jsfunction._eval, space),
'console': console,
'log': console.get(u'log'),
}
builtins.update(error_constructors)
set_protected(global_scope, 'NaN', NaN)
set_protected(global_scope, 'Infinity', Infinity)
for k, v in builtins.items():
set_non_enumerable(global_scope, k, v)