def repl(): print("Write 'exit' to exit repl") history_file = os.path.join(os.path.expanduser("~"), ".fotcorn_lisp_history") try: readline.read_history_file(history_file) readline.set_history_length(1000) except FileNotFoundError: pass atexit.register(readline.write_history_file, history_file) readline.parse_and_bind('') interpreter = Interpreter(interpreter_builtins.builtins) while True: try: line = input('>>> ') except EOFError: sys.exit(0) except KeyboardInterrupt: print() continue if line == 'exit': sys.exit(0) try: tokens = lex(line) ast = parse(tokens) value = interpreter.run(ast) if value: print(value) except (LexerException, ParseError, InterpreterException) as ex: print('Error: ', str(ex))
def assert_stdout(self, program, stdout): tokens = lex(program) ast = parse(tokens) stdout_file = StringIO() interpreter = Interpreter(ast, interpreter_builtins.builtins, stdout=stdout_file) interpreter.run() self.assertEqual(stdout_file.getvalue(), stdout)
def assert_stdout(self, program, stdout): tokens = lex(program) ast = parse(tokens) stdout_file = StringIO() interpreter = Interpreter(interpreter_builtins.builtins, stdout=stdout_file) interpreter.run(ast) self.assertEqual(stdout_file.getvalue(), stdout)
import os import sys from lisp.interpreter import run from lisp.lexer import lex from lisp.parser import parse from lisp.repl import repl if __name__ == '__main__': if len(sys.argv) not in (1, 2): print('Run file: python -m lisp <file.lisp>') print('Start repl: python -m lisp') sys.exit(1) if len(sys.argv) == 1: repl() else: filename = sys.argv[1] if not os.path.exists(filename): print('Source file {} does not exist'.format(filename)) sys.exit(1) with open(filename, encoding='utf-8') as f: program = f.read().strip() tokens = lex(program) ast = parse(tokens) run(ast)
def assert_exception(self, program, exception_type): tokens = lex(program) ast = parse(tokens) interpreter = Interpreter(ast, interpreter_builtins.builtins) self.assertRaises(exception_type, interpreter.run)
def assert_exception(self, program, exception_type): tokens = lex(program) ast = parse(tokens) interpreter = Interpreter(interpreter_builtins.builtins) self.assertRaises(exception_type, interpreter.run, ast)