def return_statement(subtree):
method = enclosing_method(subtree)
if method.tag == "constructor_declaration":
subtree.assembly = """
; return from constructor
mov eax, {this}
leave
ret
""".format(
this=stack_slot_to_operand(this)
)
return
expression = subtree.find("expression")
subtree.assembly = """
leave
ret
; end return statement
"""
if expression is not None:
child_slot = expression.slot
subtree.assembly = """
mov eax, {child_slot}
{return_assembly}
""".format(
child_slot=stack_slot_to_operand(child_slot), return_assembly=subtree.assembly
)
def generate_new_stack_slot(subtree):
method = enclosing_method(subtree)
if method:
method.slot += 1
return method.slot
CurrentFile.static_slot += 1
return CurrentFile.static_slot
