More grammar isolation

This commit is contained in:
rocky
2017-11-26 16:34:10 -05:00
parent 6db5c63307
commit 17f5b35b1d
5 changed files with 21 additions and 11 deletions

View File

@@ -73,7 +73,6 @@ class Python2Parser(PythonParser):
stmt ::= continue_stmt
continue_stmt ::= CONTINUE
continue_stmt ::= CONTINUE_LOOP
continue_stmts ::= _stmts lastl_stmt continue_stmt
continue_stmts ::= lastl_stmt continue_stmt
continue_stmts ::= continue_stmt
@@ -202,11 +201,8 @@ class Python2Parser(PythonParser):
# In Python 3, DUP_TOPX_2 is DUP_TOP_TWO
binary_subscr2 ::= expr expr DUP_TOPX_2 BINARY_SUBSCR
conditional ::= expr jmp_false expr JUMP_ABSOLUTE expr
# compare_chained2 is used in a "chained_compare": x <= y <= z
compare_chained2 ::= expr COMPARE_OP RETURN_VALUE
compare_chained2 ::= expr COMPARE_OP RETURN_VALUE_LAMBDA
"""
def p_slice2(self, args):
@@ -347,6 +343,10 @@ class Python2Parser(PythonParser):
nak = ( len(opname_base)-len('CALL_METHOD') ) // 3
rule = 'call_function ::= expr ' + 'expr '*args_pos + 'kwarg '*args_kw \
+ 'expr ' * nak + opname
elif opname == 'CONTINUE_LOOP':
self.add_unique_rule('continue_stmt ::= CONTINUE_LOOP',
opname, v, customize)
continue
elif opname_base in ('DUP_TOPX', 'RAISE_VARARGS'):
# FIXME: remove these conditions if they are not needed.
# no longer need to add a rule
@@ -378,13 +378,18 @@ class Python2Parser(PythonParser):
if i > 0 and tokens[i-1] == 'LOAD_LAMBDA':
self.addRule('mklambda ::= %s load_closure LOAD_LAMBDA %s' %
('expr '*v, opname), nop_func)
if i > 0:
prev_tok = tokens[i-1]
if prev_tok == 'LOAD_GENEXPR':
self.add_unique_rules([
('genexpr ::= %s load_closure LOAD_GENEXPR %s expr'
' GET_ITER CALL_FUNCTION_1' %
('expr '*v, opname))], customize)
pass
self.add_unique_rules([
('genexpr ::= %s load_closure LOAD_GENEXPR %s expr'
' GET_ITER CALL_FUNCTION_1' %
('expr '*v, opname)),
('mkfunc ::= %s load_closure LOAD_CONST %s' %
('expr '*v, opname))],
customize)
('expr '*v, opname))], customize)
if self.version >= 2.7:
if i > 0:
prev_tok = tokens[i-1]