def 调用(源码, 文件名):
分析器 = Parser()
节点 = 分析器.parse(源码, 文件名)
code = compile(节点, 文件名, 'exec')
globals = create_globals(argv=[], fname=文件名)
# 传出变量, 参考:
# https://stackoverflow.com/questions/45535284/exec-and-variable-scope
# https://stackoverflow.com/questions/1463306/how-does-exec-work-with-locals
# https://docs.python.org/3/library/functions.html#exec
本地量 = {}
exec(code, globals, 本地量)
def repl(ps1='> ', ps2='>> ', globals=None):
"""
A simple read-eval-print-loop for the µLang program
"""
info = [
'\tglobals: to list all builtins',
'\tquit: to quit the REPL',
'\thelp: to show this message']
if not globals:
globals = create_globals(fname='<STDIN>')
globals['globals'] = lambda : print('\n'.join([' %s (%s)' % (k, v.__class__.__name__) for k, v in globals.items() if k != '__builtins__' if k != '___']))
globals['help'] = lambda *args: if not args: print('\n'.join(info)) # Avoid dead code: help(*args)
Repl(ps1, ps2, globals).cmdloop("Welcome to ulang's REPL..\nType 'help' for more informations.")
sys.exit(0)
def repl(ps1='> ', ps2='>> ', globals=None):
"""
A simple read-eval-print-loop for the µLang program
"""
info = ['\t详情: 列出内置功能', '\t再会: 结束对话', '\t你好: 显示这段']
if not globals:
globals = create_globals(fname='<STDIN>')
globals['详情'] = lambda: print('\n'.join([
' %s (%s)' % (k, v.__class__.__name__) for k, v in globals.items()
if k != '__builtins__' if k != '___'
]))
globals['你好'] = lambda *args: print('\n'.join(info)
) if not args else print()
Repl(ps1, ps2, globals).cmdloop("木兰向您问好\n更多信息请说'你好'")
sys.exit(0)
def repl(ps1="> ", ps2=">> ", globals=None):
"""
A simple read-eval-print-loop for the µLang program
"""
info = [
"\tglobals: to list all builtins",
"\tquit: to quit the REPL",
"\thelp: to show this message",
]
if not globals:
globals = create_globals(fname="<STDIN>")
globals["globals"] = lambda: print("\n".join([
" %s (%s)" % (k, v.__class__.__name__) for k, v in globals.items()
if k != "__builtins__" if k != "___"
]))
globals["help"] = lambda *args: print("\n".join(info)
) if not args else print()
Repl(ps1, ps2, globals).cmdloop(
"Welcome to ulang's REPL..\nType 'help' for more informations.")
sys.exit(0)
def main(argv=None):
if argv is None:
argv = sys.argv
try:
opts, args = getopt.getopt(argv[1:], 'hdapbctisDTe:v', [
'dump-ast',
'dump-python',
'dump-blockly',
'dump-bytecode',
'dump-tokens',
'python-to-ulang',
'exec-code=',
'debug',
'disassemble',
'show-backtrace',
'help',
'version',
'interact'])
except getopt.GetoptError as e:
try:
sys.stderr.write(str(e) + '\n')
usage(argv[0])
finally:
e = None
del e
input_file = None
dump_ast = False
dump_python = False
dump_blockly = False
dump_bytecode = False
dump_tokens = False
disassemble = False
trace_exception = False
interactive = False
python2ulang = False
exec_code = None
debug = False
for opt, value in opts:
if opt in ('-i', '--interact'):
interactive = True
elif opt in ('-p', '--dump-python'):
dump_python = True
elif opt in ('-a', '--dump-ast'):
dump_ast = True
elif opt in ('-b', '--dump-blockly'):
dump_blockly = True
elif opt in ('-c', '--dump-bytecode'):
dump_bytecode = True
elif opt in ('-d', '--disassemble'):
disassemble = True
elif opt in ('-s', '--python-to-ulang'):
python2ulang = True
elif opt in ('-D', '--debug'):
debug = True
elif opt in ('-t', '--show-backtrace'):
trace_exception = True
elif opt in ('-T', '--dump-tokens'):
dump_tokens = True
elif opt in ('-e', '--exec-code'):
exec_code = value
elif opt in ('-v', '--version'):
from ulang import __version__
sys.stderr.write('%s\n' % __version__)
sys.exit()
if len(argv) == 1:
sys.exit(repl())
if len(args) > 0:
input_file = args[0]
if input_file is None:
if len(argv) == 1:
sys.exit(repl())
if not exec_code:
usage(argv[0])
try:
source = None
if exec_code:
source = exec_code
input_file = '<CLI>'
elif input_file == '-':
source = sys.stdin.read()
input_file = '<STDIN>'
else:
with open(input_file, 'r') as f:
source = f.read()
if not source:
sys.stderr.write('cannot open file "%s"!\n' % input_file)
sys.exit(-1)
if python2ulang:
nodes = ast.parse(source, input_file)
print(ulgen.dump(nodes))
return
if dump_tokens:
tokens = lexer.lex(source)
for token in tokens:
print((token.gettokentype()), end=' ')
return
parser = Parser()
nodes = parser.parse(source, input_file)
if dump_ast:
print(ast.dump(nodes, True, True))
return
if dump_python:
print(python.dump(nodes))
return
if dump_blockly:
print(blockly.dump(nodes))
return
if dump_bytecode:
from pygen.compiler import Compiler
print(Compiler().compile(nodes, input_file).dump())
return
code = compile(nodes, input_file, 'exec')
if disassemble:
dis.dis(code)
return
globals = create_globals(argv=(args[1:]),
fname=input_file)
if debug:
import pdb
while True:
try:
pdb.run(code, globals, None)
except pdb.Restart:
pass
else:
break
else:
exec(code, globals)
if interactive:
repl(globals=globals)
except Exception as e:
try:
sys.stderr.write('%s: %s\n' % (e.__class__.__name__, str(e)))
if trace_exception:
import pdb
extype, value, tb = sys.exc_info()
pdb.post_mortem(tb)
raise e
finally:
e = None
del e
def main(argv=None):
if argv is None:
argv = sys.argv
else:
try:
opts, args = getopt.getopt(
argv[1:],
"hdapbctisDTe:v",
[
"dump-ast",
"dump-python",
"dump-blockly",
"dump-bytecode",
"dump-tokens",
"python-to-ulang",
"exec-code=",
"debug",
"disassemble",
"show-backtrace",
"help",
"version",
"interact",
],
)
except getopt.GetoptError as e:
try:
sys.stderr.write(str(e) + "\n")
usage(argv[0])
finally:
e = None
del e
input_file = None
dump_ast = False
dump_python = False
dump_blockly = False
dump_bytecode = False
dump_tokens = False
disassemble = False
trace_exception = False
interactive = False
python2ulang = False
exec_code = None
debug = False
for opt, value in opts:
if opt in ("-i", "--interact"):
interactive = True
elif opt in ("-p", "--dump-python"):
dump_python = True
elif opt in ("-a", "--dump-ast"):
dump_ast = True
elif opt in ("-b", "--dump-blockly"):
dump_blockly = True
elif opt in ("-c", "--dump-bytecode"):
dump_bytecode = True
elif opt in ("-d", "--disassemble"):
disassemble = True
elif opt in ("-s", "--python-to-ulang"):
python2ulang = True
elif opt in ("-D", "--debug"):
debug = True
elif opt in ("-t", "--show-backtrace"):
trace_exception = True
elif opt in ("-T", "--dump-tokens"):
dump_tokens = True
elif opt in ("-e", "--exec-code"):
exec_code = value
else:
if opt in ("-v", "--version"):
from ulang import __version__
sys.stderr.write("%s\n" % __version__)
sys.exit()
if input_file is None:
if len(args) > 0:
input_file = args[0]
if input_file is None:
if len(argv) == 1:
sys.exit(repl())
else:
if not exec_code:
usage(argv[0])
try:
source = None
if exec_code:
source = exec_code
input_file = "<CLI>"
else:
if input_file == "-":
source = sys.stdin.read()
input_file = "<STDIN>"
else:
with open(input_file, "r") as (f):
source = f.read()
if not source:
sys.stderr.write('cannot open file "%s"!\n' % input_file)
sys.exit(-1)
if python2ulang:
nodes = ast.parse(source, input_file)
print(ulgen.dump(nodes))
return
if dump_tokens:
tokens = lexer.lex(source)
for token in tokens:
print((token.gettokentype()), end=" ")
return
parser = Parser()
nodes = parser.parse(source, input_file)
if dump_ast:
print(ast.dump(nodes, True, True))
return
if dump_python:
print(python.dump(nodes))
return
if dump_blockly:
print(blockly.dump(nodes))
return
if dump_bytecode:
from pygen.compiler import Compiler
print(Compiler().compile(nodes, input_file).dump())
return
code = compile(nodes, input_file, "exec")
if disassemble:
dis.dis(code)
return
globals = create_globals(argv=(args[1:]), fname=input_file)
if debug:
import pdb
while True:
try:
pdb.run(code, globals, None)
except pdb.Restart:
pass
else:
break
else:
exec(code, globals)
if interactive:
repl(globals=globals)
except Exception as e:
try:
sys.stderr.write("%s: %s\n" % (e.__class__.__name__, str(e)))
if trace_exception:
raise e
finally:
e = None
del e