def ParseAndEval(code_str):
w_parser, _ = parse_lib.MakeParserForCompletion(code_str)
#spec = arith_parse.MakeShellSpec()
#a_parser = tdop.TdopParser(spec, w_parser) # Calls ReadWord(LexMode.ARITH)
#anode = a_parser.Parse()
anode = w_parser._ReadArithExpr() # need the right lex state?
if not anode:
raise ExprSyntaxError("failed %s" % w_parser.Error())
print('node:', anode)
mem = cmd_exec.Mem('', [])
exec_opts = cmd_exec.ExecOpts()
ev = word_eval.CompletionWordEvaluator(mem, exec_opts)
arith_ev = expr_eval.ArithEvaluator(mem, ev)
ok = arith_ev.Eval(anode)
if ok:
value = arith_ev.Result()
print('value:', value)
else:
raise AssertionError(code_str)
return value
def InitExecutor():
mem = cmd_exec.Mem('', [])
status_line = ui.NullStatusLine()
builtins = Builtins(status_line)
funcs = {}
comp_funcs = {}
exec_opts = cmd_exec.ExecOpts()
return cmd_exec.Executor(mem, builtins, funcs, comp_funcs, exec_opts,
parse_lib.MakeParserForExecutor)
def InitEvaluator():
mem = cmd_exec.Mem('', [])
val1 = runtime.Str('xxx')
val2 = runtime.Str('yyy')
pairs = [(ast.LeftVar('x'), val1), (ast.LeftVar('y'), val2)]
mem.SetLocals(pairs)
exec_opts = cmd_exec.ExecOpts()
# Don't need side effects for most things
return word_eval.CompletionWordEvaluator(mem, exec_opts)
def InitEvaluator():
mem = cmd_exec.Mem('', [])
val1 = Value.FromString('xxx')
val2 = Value.FromString('yyy')
pairs = [(ast.LeftVar('x'), val1), (ast.LeftVar('y'), val2)]
mem.SetLocal(pairs, 0)
exec_opts = cmd_exec.ExecOpts()
# Don't need side effects for most things
return word_eval.CompletionEvaluator(mem, exec_opts)
def InitExecutor():
mem = cmd_exec.Mem('', [])
status_line = ui.NullStatusLine()
builtins = Builtins(status_line)
funcs = {}
comp_funcs = {}
exec_opts = cmd_exec.ExecOpts()
pool = alloc.Pool()
arena = pool.NewArena()
return cmd_exec.Executor(mem, builtins, funcs, completion, comp_funcs,
exec_opts, parse_lib.MakeParserForExecutor, arena)
def OshMain(argv):
(opts, argv) = Options().parse_args(argv)
state = util.TraceState()
if 'cp' in opts.trace:
util.WrapMethods(cmd_parse.CommandParser, state)
if 'wp' in opts.trace:
util.WrapMethods(word_parse.WordParser, state)
if 'lexer' in opts.trace:
util.WrapMethods(lexer.Lexer, state)
if len(argv) == 0:
dollar0 = sys.argv[0] # e.g. bin/osh
else:
dollar0 = argv[0] # the script name
# TODO: Create a --parse action or 'osh parse' or 'oil osh-parse'
# osh-fix
# It uses a different memory-management model. It's a batch program and not
# an interactive program.
pool = Pool()
arena = pool.NewArena()
# TODO: Maybe wrap this initialization sequence up in an oil_State, like
# lua_State.
status_lines = ui.MakeStatusLines()
mem = cmd_exec.Mem(dollar0, argv[1:])
builtins = builtin.Builtins(status_lines[0])
funcs = {}
# Passed to Executor for 'complete', and passed to completion.Init
comp_lookup = completion.CompletionLookup()
exec_opts = cmd_exec.ExecOpts()
# TODO: How to get a handle to initialized builtins here?
# tokens.py has it. I think you just make a separate table, with
# metaprogramming.
ex = cmd_exec.Executor(mem, builtins, funcs, comp_lookup, exec_opts,
parse_lib.MakeParserForExecutor)
# NOTE: The rc file can contain both commands and functions... ideally we
# would only want to save nodes/lines for the functions.
try:
rc_path = 'oilrc'
with open(rc_path) as f:
contents = f.read()
arena.AddSourcePath(rc_path)
#print(repr(contents))
rc_line_reader = reader.StringLineReader(contents, arena=arena)
_, rc_c_parser = parse_lib.MakeParserForTop(rc_line_reader)
rc_node = rc_c_parser.ParseWholeFile()
if not rc_node:
# TODO: Error should return a token, and then the token should have a
# arena index, and then look that up in the arena.
err = rc_c_parser.Error()
ui.PrintError(err, arena, sys.stderr)
return 2 # parse error is code 2
status = ex.Execute(rc_node)
#print('oilrc:', status, cflow, file=sys.stderr)
# Ignore bad status?
except IOError as e:
if e.errno != errno.ENOENT:
raise
if opts.command is not None:
arena.AddSourcePath('<-c arg>')
line_reader = reader.StringLineReader(opts.command, arena=arena)
interactive = False
elif opts.interactive: # force interactive
arena.AddSourcePath('<stdin -i>')
line_reader = reader.InteractiveLineReader(OSH_PS1, arena=arena)
interactive = True
else:
try:
script_name = argv[0]
except IndexError:
if sys.stdin.isatty():
arena.AddSourcePath('<interactive>')
line_reader = reader.InteractiveLineReader(OSH_PS1,
arena=arena)
interactive = True
else:
arena.AddSourcePath('<stdin>')
line_reader = reader.StringLineReader(sys.stdin.read(),
arena=arena)
interactive = False
else:
arena.AddSourcePath(script_name)
with open(script_name) as f:
line_reader = reader.StringLineReader(f.read(), arena=arena)
interactive = False
# TODO: assert arena.NumSourcePaths() == 1
# TODO: .rc file needs its own arena.
w_parser, c_parser = parse_lib.MakeParserForTop(line_reader, arena=arena)
if interactive:
# NOTE: We're using a different evaluator here. The completion system can
# also run functions... it gets the Executor through Executor._Complete.
ev = word_eval.CompletionWordEvaluator(mem, exec_opts)
completion.Init(builtins, mem, funcs, comp_lookup, status_lines, ev)
# TODO: Could instantiate "printer" instead of showing ops
InteractiveLoop(opts, ex, c_parser, w_parser, line_reader)
status = 0 # TODO: set code
else:
# Parse the whole thing up front
#print('Parsing file')
# TODO: Do I need ParseAndEvalLoop? How is it different than
# InteractiveLoop?
node = c_parser.ParseWholeFile()
if not node:
err = c_parser.Error()
ui.PrintError(err, arena, sys.stderr)
return 2 # parse error is code 2
if opts.ast_output:
if opts.ast_format == 'oheap':
if opts.ast_output == '-':
if sys.stdout.isatty():
raise RuntimeError(
'ERROR: Not dumping binary data to a TTY.')
f = sys.stdout
else:
f = open(opts.ast_output, 'wb') # implicitly closed
enc = encode.Params()
out = encode.BinOutput(f)
encode.EncodeRoot(node, enc, out)
else: # text output
if opts.ast_output == '-':
f = sys.stdout
else:
f = open(opts.ast_output, 'w') # implicitly closed
if opts.ast_format in ('text', 'abbrev-text'):
ast_f = fmt.DetectConsoleOutput(f)
elif opts.ast_format in ('html', 'abbrev-html'):
ast_f = fmt.HtmlOutput(f)
else:
raise AssertionError
abbrev_hook = (ast.AbbreviateNodes
if 'abbrev-' in opts.ast_format else None)
tree = fmt.MakeTree(node, abbrev_hook=abbrev_hook)
ast_f.FileHeader()
fmt.PrintTree(tree, ast_f)
ast_f.FileFooter()
ast_f.write('\n')
if opts.do_exec:
status = ex.Execute(node)
else:
util.log('Execution skipped because --no-exec was passed')
status = 0
if opts.fix:
fix.PrintAsOil(arena, node, opts.debug_spans)
return status
def _MakeTestEvaluator():
mem = cmd_exec.Mem('', [])
exec_opts = cmd_exec.ExecOpts()
ev = word_eval.CompletionWordEvaluator(mem, exec_opts)
return ev