def proc_load(scope, fname):
tokens = lexer.tokenize_file(fname)
ast, balance = lexer.get_ast(tokens)
if balance != 0:
raise Exception("Unbalanced parentheses")
ast = lexer.expand_quotes(ast)
ast = lexer.expand_define(ast)
for expr in ast:
scope.eval(expr)
def start(self):
stored_tokens = []
while True:
try:
line = raw_input("scheme> ").strip()
except EOFError:
print
break
if not line:
continue
try:
tokens = lexer.tokenize(line)
except Exception as e:
print(e)
continue
stored_tokens += tokens
ast, balance = lexer.get_ast(stored_tokens)
if balance > 0:
continue
elif balance < 0:
print('Unexpected ")"')
stored_tokens = []
continue
stored_tokens = []
ast = lexer.expand_quotes(ast)
ast = lexer.expand_define(ast)
for expr in ast:
print(self.scope.eval(expr))
