def compile_parse_tree(self, filename: str, parse_tree) -> Code:
"""
Takes a filename and a parse_tree and returns a BytecodeAssembler
Code object
:param filename: filename of file to compile
:param parse_tree: parse_tree to compile
:rtype: Code
"""
filename = os.path.abspath(filename)
line_no = -1
code = Code()
code.set_lineno(line_no)
code = self.bootstrap_obj(code)
line_no += 1
code.co_filename = filename
line_no, code = self.compile_parse_tree_internal(
codeobject=code,
parse_tree=parse_tree,
line_no=line_no,
filename=filename
)
code.return_(None)
return code
def compile_single(self,
codeobject: Code,
filename: str,
element: Node,
line_no: int,
result_required: bool,
scope: list) -> tuple:
"""
compiles a single Node
"""
codeobject.set_lineno(element.content[0].line_no)
if isinstance(element.content[0], (IDNode, SymbolNode)):
if element.content[0].content == 'defun':
# wahey! creating a function!
line_no, codeobject = self.compile_function(
codeobject,
filename,
element,
line_no
)
elif element.content[0].content == 'lambda':
raise Exception((element, element.content))
elif element.content[0].content in ('let',
'defparameter',
'defvar'):
# inline variable assignments
line_no, codeobject = self.handle_variable_assignment(
codeobject,
filename,
element,
line_no,
scope
)
else:
# whahey! calling a function!
line_no, codeobject = self.call_function(
codeobject,
filename,
element,
line_no,
scope
)
if not result_required:
# if the result aint required, clean up the stack
codeobject.POP_TOP()
else:
raise Exception('{} -> {}'.format(element, element.content))
return line_no, codeobject
