def Run(self):
# type: () -> None
val = self.mem.GetValue('PROMPT_COMMAND')
if val.tag_() != value_e.Str:
return
# PROMPT_COMMAND almost never changes, so we try to cache its parsing.
# This avoids memory allocations.
prompt_cmd = cast(value__Str, val).s
node = self.parse_cache.get(prompt_cmd)
if node is None:
line_reader = reader.StringLineReader(prompt_cmd, self.arena)
c_parser = self.parse_ctx.MakeOshParser(line_reader)
# NOTE: This is similar to CommandEvaluator.ParseTrapCode().
# TODO: Add spid
with alloc.ctx_Location(self.arena,
source.PromptCommand(runtime.NO_SPID)):
try:
node = main_loop.ParseWholeFile(c_parser)
except error.Parse as e:
ui.PrettyPrintError(e, self.arena)
return # don't execute
self.parse_cache[prompt_cmd] = node
# Save this so PROMPT_COMMAND can't set $?
with state.ctx_Status(self.mem):
# Catches fatal execution error
self.cmd_ev.ExecuteAndCatch(node)
def Run(self):
# type: () -> None
val = self.mem.GetVar('PROMPT_COMMAND')
if val.tag != value_e.Str:
return
# PROMPT_COMMAND almost never changes, so we try to cache its parsing.
# This avoids memory allocations.
prompt_cmd = val.s
try:
node = self.parse_cache[prompt_cmd]
except KeyError:
line_reader = reader.StringLineReader(prompt_cmd, self.arena)
c_parser = self.parse_ctx.MakeOshParser(line_reader)
# NOTE: This is similar to Executor.ParseTrapCode().
# TODO: Add spid
self.arena.PushSource(source.PromptCommand(const.NO_INTEGER))
try:
try:
node = main_loop.ParseWholeFile(c_parser)
except util.ParseError as e:
ui.PrettyPrintError(e, self.arena)
return # don't execute
finally:
self.arena.PopSource()
self.parse_cache[prompt_cmd] = node
# Save this so PROMPT_COMMAND can't set $?
self.mem.PushStatusFrame()
try:
# Catches fatal execution error
self.ex.ExecuteAndCatch(node)
finally:
self.mem.PopStatusFrame()