def _load(data=None):
if data is None:
data = pickle.load(open(__path__ + 'bin', 'rb'))
else:
data = pickle.loads(data)
lark_data, lexer_terminals = data
return (Lark.load(BytesIO(lark_data)).parser,
get_lexer_from_tokens([
TerminalDef.deserialize(token, {}) for token in lexer_terminals
]))
def create_parser ( self, rule : str = None, read_cache : bool = True, write_cache : bool = True ):
with open( Path( __file__ ).parent / "grammar.lark", "r" ) as f:
grammar_content = f.read()
cache_path = self.get_cache_path( rule, grammar_content ) if read_cache or write_cache else None
parser = None
if read_cache and cache_path.exists():
with open( cache_path, "rb" ) as f:
parser = Lark.load( f )
else:
parser = Lark( grammar_content, start = rule or 'start',
parser='lalr', debug=False, propagate_positions = True,
maybe_placeholders = True )
if write_cache:
with open( cache_path, "wb" ) as f:
parser.save( f )
return parser
%import common.WS -> WHITESPACE
%ignore WHITESPACE
%ignore SINGLE_LINE_COMMENT
%ignore MULTI_LINE_COMMENT
"""
keyWords = [
'void', 'int', 'double', 'bool', 'string', 'class', 'interface', 'null',
'this', 'extends', 'implements', 'for', 'while', 'if', 'else', 'return',
'break', 'new', 'NewArray', 'Print', 'ReadInteger', 'ReadLine'
]
# parser = Lark(grammar, parser='lalr', debug=False)
# parser.save(open("parser.lark", "wb"))
parser = Lark.load(open("parser.lark", "rb"))
with open("Tests\input.d", "r") as input_file:
code = input_file.read()
x = parser.parse(code)
parseTree = ParseTree(x)
# s = 0
# for j in parseTree.nodes:
# print(s, " ", j)
# s += 1
sys.stdout = open("mips.s", "w")
cgen(parseTree)
sys.stdout.close()
