def MaybeCollect(self, cmd_ev, err):
# type: (Any, _ErrorWithLocation) -> None
# TODO: Any -> CommandEvaluator
"""
Args:
cmd_ev: CommandEvaluator instance
error: _ErrorWithLocation (ParseError or FatalRuntimeError)
"""
if not self.do_collect: # Either we already did it, or there is no file
return
if mylib.PYTHON: # can't translate yet due to dynamic typing
self.var_stack, self.argv_stack, self.debug_stack = cmd_ev.mem.Dump()
span_id = word_.SpanIdFromError(err)
self.error = {
'msg': err.UserErrorString(),
'span_id': span_id,
}
if span_id != runtime.NO_SPID:
span = cmd_ev.arena.GetLineSpan(span_id)
line_id = span.line_id
# Could also do msg % args separately, but JavaScript won't be able to
# render that.
self.error['source'] = cmd_ev.arena.GetLineSourceString(line_id)
self.error['line_num'] = cmd_ev.arena.GetLineNumber(line_id)
self.error['line'] = cmd_ev.arena.GetLine(line_id)
# TODO: Collect functions, aliases, etc.
self.do_collect = False
self.collected = True
def MaybeCollect(self, ex, err):
# type: (Any, _ErrorWithLocation) -> None
# TODO: Any -> Executor
"""
Args:
ex: Executor instance
error: _ErrorWithLocation (ParseError or FatalRuntimeError)
"""
if not self.do_collect: # Either we already did it, or there is no file
return
self.var_stack, self.argv_stack, self.debug_stack = ex.mem.Dump()
span_id = word_.SpanIdFromError(err)
self.error = {
'msg': err.UserErrorString(),
'span_id': span_id,
}
if span_id != const.NO_INTEGER:
span = ex.arena.GetLineSpan(span_id)
line_id = span.line_id
# Could also do msg % args separately, but JavaScript won't be able to
# render that.
self.error['source'] = ex.arena.GetLineSourceString(line_id)
self.error['line_num'] = ex.arena.GetLineNumber(line_id)
self.error['line'] = ex.arena.GetLine(line_id)
# TODO: Collect functions, aliases, etc.
self.do_collect = False
self.collected = True
def _ValToIntOrError(self, val, blame_word=None, span_id=runtime.NO_SPID):
# type: (value_t, word_t, int) -> int
if span_id == runtime.NO_SPID and blame_word:
span_id = word_.LeftMostSpanForWord(blame_word)
#log('_ValToIntOrError span=%s blame=%s', span_id, blame_word)
try:
if val.tag == value_e.Undef: # 'nounset' already handled before got here
# Happens upon a[undefined]=42, which unfortunately turns into a[0]=42.
#log('blame_word %s arena %s', blame_word, self.arena)
e_die('Undefined value in arithmetic context', span_id=span_id)
if val.tag == value_e.Int:
return val.i
if val.tag == value_e.Str:
return _StringToInteger(val.s, span_id=span_id) # calls e_die
except error.FatalRuntime as e:
if self.exec_opts.strict_arith:
raise
else:
span_id = word_.SpanIdFromError(e)
self.errfmt.PrettyPrintError(e, prefix='warning: ')
return 0
# Arrays and associative arrays always fail -- not controlled by strict_arith.
# In bash, (( a )) is like (( a[0] )), but I don't want that.
# And returning '0' gives different results.
e_die("Expected a value convertible to integer, got %s",
val,
span_id=span_id)
def _ValToArithOrError(self, val, blame_word=None, span_id=runtime.NO_SPID):
if span_id == runtime.NO_SPID and blame_word:
span_id = word_.LeftMostSpanForWord(blame_word)
#log('_ValToArithOrError span=%s blame=%s', span_id, blame_word)
try:
i = self._ValToArith(val, span_id)
except util.FatalRuntimeError as e:
if self.exec_opts.strict_arith:
raise
else:
i = 0
span_id = word_.SpanIdFromError(e)
self.errfmt.PrettyPrintError(e, prefix='warning: ')
return i
def PrettyPrintError(err, arena, prefix='', f=sys.stderr):
# type: (_ErrorWithLocation, Arena, str, IO[str]) -> None
"""
Args:
prefix: in osh/cmd_exec.py we want to print 'fatal'
"""
msg = err.UserErrorString()
span_id = word_.SpanIdFromError(err)
# TODO: Should there be a special span_id of 0 for EOF? runtime.NO_SPID
# means there is no location info, but 0 could mean that the location is EOF.
# So then you query the arena for the last line in that case?
# Eof_Real is the ONLY token with 0 span, because it's invisible!
# Well Eol_Tok is a sentinel with a span_id of runtime.NO_SPID. I think
# that is OK.
# Problem: the column for Eof could be useful.
_PrintWithOptionalSpanId(prefix, msg, span_id, arena, f)
def _ValToIntOrError(self, val, span_id=runtime.NO_SPID):
# type: (value_t, int) -> int
try:
UP_val = val
with tagswitch(val) as case:
if case(value_e.Undef
): # 'nounset' already handled before got here
# Happens upon a[undefined]=42, which unfortunately turns into a[0]=42.
#log('blame_word %s arena %s', blame_word, self.arena)
e_die('Undefined value in arithmetic context',
span_id=span_id)
elif case(value_e.Int):
val = cast(value__Int, UP_val)
return val.i
elif case(value_e.Str):
val = cast(value__Str, UP_val)
return _StringToInteger(val.s,
span_id=span_id) # calls e_die
elif case(value_e.Obj):
# Note: this handles var x = 42; echo $(( x > 2 )).
if mylib.PYTHON:
val = cast(value__Obj, UP_val)
if isinstance(val.obj, int):
return val.obj
raise AssertionError() # not in C++
except error.FatalRuntime as e:
if self.exec_opts.strict_arith():
raise
else:
span_id = word_.SpanIdFromError(e)
self.errfmt.PrettyPrintError(e, prefix='warning: ')
return 0
# Arrays and associative arrays always fail -- not controlled by strict_arith.
# In bash, (( a )) is like (( a[0] )), but I don't want that.
# And returning '0' gives different results.
e_die("Expected a value convertible to integer, got %s",
ui.ValType(val),
span_id=span_id)
def _pp(err, arena, prefix):
# type: (_ErrorWithLocation, Arena, str) -> None
"""
Called by free function PrettyPrintError and method PrettyPrintError. This
is a HACK for mycpp translation. C++ can't find a free function
PrettyPrintError() when called within a METHOD of the same name.
"""
msg = err.UserErrorString()
span_id = word_.SpanIdFromError(err)
# TODO: Should there be a special span_id of 0 for EOF? runtime.NO_SPID
# means there is no location info, but 0 could mean that the location is EOF.
# So then you query the arena for the last line in that case?
# Eof_Real is the ONLY token with 0 span, because it's invisible!
# Well Eol_Tok is a sentinel with a span_id of runtime.NO_SPID. I think
# that is OK.
# Problem: the column for Eof could be useful.
_PrintWithOptionalSpanId(prefix, msg, span_id, arena)
