def __init__(self, lexer: _Lexer):
"""SymbolTable constructor.
Takes lexer or tokens argument to get the collection of tokens. Prioritizes parser if both are provided.
Args:
lexer: The lexer for generating collections of token.
"""
super().__init__()
self.__tokens = lexer.tokens()
self.__current_token = None
self.__next_token = None
self._advance()
self._advance()
self._generate()
def main():
print("Mini Java Compiler")
if len(sys.argv) < 2:
sys.exit("Error: Compiler needs source file as argument.")
with pathlib.Path(sys.argv[1]).resolve().open(mode="r") as f:
buffer = f.read()
target_dir = pathlib.Path(__file__).parent.joinpath("../dumps")
target_dir.mkdir(parents=True, exist_ok=True)
print(f"{'':-<50}\nLexer Test")
lexer = Lexer(buffer)
with target_dir.joinpath("./tokens.txt").open("w") as f:
print(f"{'Position':10}{'Stream':<10}{'Token name':20}{'Value':20}", file=f)
for token in lexer.tokens():
print(token, file=f)
print("Lexing completed.")
print(f"{'':-<50}\nSymbol Table Test")
symtable = SymbolTable(lexer)
with target_dir.joinpath("./symtable.json").open("w") as f:
json.dump(symtable.data, f, indent=4)
print("Symbol table completed.")
print(f"{'':-<50}\nParser Test")
parser = Parser(lexer)
ast = parser.program()
print("Parsing completed.")
print(f"{'':-<50}\nCode Generator Test")
code_gen = CodeGen(ast)
code = code_gen.generate_code()
with target_dir.joinpath("./output.c").open("w") as f:
print(code, file=f)
print("Code generation completed.")