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Commit 9fc5b63b authored by Stefan Marr's avatar Stefan Marr
Browse files

Refactored and hopefully completed startup procedure of interpreter


Signed-off-by: default avatarStefan Marr <git@stefan-marr.de>
parent 1cc2298c
......@@ -70,7 +70,19 @@ class Universe(object):
@property
def metaclassClass(self):
return self._metaclassClass
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)
return self.start(bootstrap_frame, invokable)
def _create_bootstrap_method(self):
# Create a fake bootstrap method to simplify later frame traversal
......@@ -80,14 +92,44 @@ class Universe(object):
bootstrap_method.set_maximum_number_of_stack_elements(self.new_integer(2))
bootstrap_method.set_holder(self._systemClass)
def _create_bootstrap_frame(self, bootstrap_method, receiver, arguments = None):
# Create a fake bootstrap frame with the system object on the stack
bootstrap_frame = self._interpreter.push_new_frame(bootstrap_method)
bootstrap_frame.push(receiver)
if arguments:
# Convert the arguments into an array
arguments_array = self.new_array_from_list(arguments)
bootstrap_frame.push(arguments_array)
def interpret(self, arguments):
# Check for command line switches
arguments = self.handle_arguments(arguments)
# Initialize the known universe
self.initialize(arguments)
system_object = self._initialize_object_system()
bootstrap_method = self._create_bootstrap_method()
self.start()
# 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:
bootstrap_frame = self._create_bootstrap_frame(bootstrap_method, system_object, arguments)
# Lookup the initialize invokable on the system class
initialize = self._systemClass.lookup_invokable(self.symbol_for("initialize:"))
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()
def handle_arguments(self, arguments):
got_classpath = False
......
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