def nonterminal(self, nt, args):
# nonterminal with a (reserved) single word derivation
no_skip = ('pass_stmt', 'continue_stmt', 'break_stmt', 'return_stmt')
has_len = hasattr(args, '__len__')
if nt in self.collect and len(args) > 1:
#
# Collect iterated thingies together.
#
rv = args[0]
for arg in args[1:]:
rv.append(arg)
elif (has_len and len(args) == 1 and
hasattr(args[0], '__len__') and args[0] not in no_skip and
len(args[0]) == 1):
# Remove singleton derivations
rv = GenericASTBuilder.nonterminal(self, nt, args[0])
del args[0] # save memory
elif (has_len and len(args) == 2 and
hasattr(args[1], '__len__') and len(args[1]) == 0):
# Remove trailing epsilon rules, but only when there
# are two items.
if hasattr(args[0], '__len__') and len(args[0]) == 1:
# Remove singleton derivation
rv = args[0]
else:
rv = GenericASTBuilder.nonterminal(self, nt, args[:1])
del args[1] # save memory
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def nonterminal(self, nt, args):
has_len = hasattr(args, '__len__')
if (has_len and len(args) == 1 and
hasattr(args[0], '__len__') and len(args[0]) == 1):
# Remove singleton derivations
rv = GenericASTBuilder.nonterminal(self, nt, args[0])
del args[0] # save memory
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def resolve(self, list):
if len(list) == 2 and 'funcdef' in list and 'assign' in list:
return 'funcdef'
if 'grammar' in list and 'expr' in list:
return 'expr'
# print >> sys.stderr, 'resolve', str(list)
return GenericASTBuilder.resolve(self, list)
def nonterminal(self, nt, args):
has_len = hasattr(args, '__len__')
collect = ('tokens',)
if nt in collect:
#
# Collect iterated thingies together.
#
rv = args[0]
for arg in args[1:]:
rv.append(arg)
if (has_len and len(args) == 1 and
hasattr(args[0], '__len__') and len(args[0]) == 1):
# Remove singleton derivations
rv = GenericASTBuilder.nonterminal(self, nt, args[0])
del args[0] # save memory
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def nonterminal(self, nt, args):
if nt in self.collect and len(args) > 1:
#
# Collect iterated thingies together. That is rather than
# stmts -> stmts stmt -> stmts stmt -> ...
# stmms -> stmt stmt ...
#
rv = args[0]
rv.append(args[1])
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def nonterminal(self, nt, args):
collect = ('stmts', 'exprlist', 'kvlist', '_stmts', 'print_items')
if nt in collect and len(args) > 1:
#
# Collect iterated thingies together.
#
rv = args[0]
rv.append(args[1])
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def nonterminal(self, nt, args):
# Put left-recursive list non-terminals:
# x ::= x y
# x ::=
collect = ('stmts', 'comments', 'dot_names', 'dots',
'comp_op_exprs', 'newline_or_stmts',
'comma_names'
)
# nonterminal with a (reserved0 single word derivation
no_skip = ('pass_stmt', 'continue_stmt', 'break_stmt', 'return_stmt')
has_len = hasattr(args, '__len__')
if nt in collect and len(args) > 1:
#
# Collect iterated thingies together.
#
rv = args[0]
for arg in args[1:]:
rv.append(arg)
elif (has_len and len(args) == 1 and
hasattr(args[0], '__len__') and args[0] not in no_skip and
len(args[0]) == 1):
# Remove singleton derivations
rv = GenericASTBuilder.nonterminal(self, nt, args[0])
del args[0] # save memory
elif (has_len and len(args) == 2 and
hasattr(args[1], '__len__') and len(args[1]) == 0):
# Remove trailing epsilon rules, but only when there
# are two items.
if hasattr(args[0], '__len__') and len(args[0]) == 1:
# Remove singleton derivation
rv = args[0]
else:
rv = GenericASTBuilder.nonterminal(self, nt, args[:1])
del args[1] # save memory
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def nonterminal(self, nt, args):
collect = ('stmts', 'exprlist', 'kvlist', '_stmts', 'print_items', 'kwargs',
# PYPY:
'kvlist_n')
if nt in collect and len(args) > 1:
#
# Collect iterated thingies together. That is rather than
# stmts -> stmts stmt -> stmts stmt -> ...
# stmms -> stmt stmt ...
#
rv = args[0]
rv.append(args[1])
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def __ambiguity(self, children):
# only for debugging! to be removed hG/2000-10-15
print(children)
return GenericASTBuilder.ambiguity(self, children)
def __ambiguity(self, children):
# only for debugging! to be removed hG/2000-10-15
print(children)
return GenericASTBuilder.ambiguity(self, children)
