def ParseKshFunctionDef(self):
"""
ksh_function_def : 'function' fname ( '(' ')' )? newline_ok function_body
"""
left_spid = word.LeftMostSpanForWord(self.cur_word)
self._Next() # skip past 'function'
if not self._Peek(): return None
ok, name = word.AsFuncName(self.cur_word)
if not ok:
self.AddErrorContext("Invalid function name: %r", self.cur_word)
return None
after_name_spid = word.LeftMostSpanForWord(self.cur_word) + 1
self._Next() # skip past 'function name
if not self._Peek(): return None
if self.c_id == Id.Op_LParen:
self.lexer.PushHint(Id.Op_RParen, Id.Right_FuncDef)
self._Next()
if not self._Eat(Id.Right_FuncDef): return None
# Change it: after )
after_name_spid = word.LeftMostSpanForWord(self.cur_word) + 1
if not self._NewlineOk(): return None
func = ast.FuncDef()
func.name = name
if not self.ParseFunctionBody(func):
return None
func.spids.append(left_spid)
func.spids.append(after_name_spid)
return func
def ParseFunctionDef(self):
"""
function_header : fname '(' ')'
function_def : function_header newline_ok function_body ;
Precondition: Looking at the function name.
Post condition:
NOTE: There is an ambiguity with:
function foo ( echo hi ) and
function foo () ( echo hi )
Bash only accepts the latter, though it doesn't really follow a grammar.
"""
left_spid = word.LeftMostSpanForWord(self.cur_word)
ok, name = word.AsFuncName(self.cur_word)
if not ok:
self.AddErrorContext("Invalid function name: %r",
self.cur_word, word=self.cur_word)
return None
self._Next() # skip function name
# Must be true beacuse of lookahead
if not self._Peek(): return None
assert self.c_id == Id.Op_LParen, self.cur_word
self.lexer.PushHint(Id.Op_RParen, Id.Right_FuncDef)
self._Next()
if not self._Eat(Id.Right_FuncDef): return None
after_name_spid = word.LeftMostSpanForWord(self.cur_word) + 1
if not self._NewlineOk(): return None
func = ast.FuncDef()
func.name = name
if not self.ParseFunctionBody(func):
return None
func.spids.append(left_spid)
func.spids.append(after_name_spid)
return func