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Some grammar cleanup based on coverage info

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rocky
2019-11-17 01:01:52 -05:00
parent 7b68c9c838
commit daa424cf0c
2 changed files with 48 additions and 3 deletions
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17
uncompyle6/parsers/parse30.py
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@@ -24,9 +24,7 @@ class Python30Parser(Python31Parser):
# FIXME: combine with parse3.2
whileTruestmt ::= SETUP_LOOP l_stmts_opt
JUMP_BACK COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP l_stmts_opt
CONTINUE COME_FROM_LOOP
jb_or_c COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP returns
COME_FROM_LOOP
@@ -205,6 +203,18 @@ class Python30Parser(Python31Parser):
def remove_rules_30(self):
self.remove_rules("""
# The were found using grammar coverage
while1stmt ::= SETUP_LOOP l_stmts COME_FROM JUMP_BACK COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK COME_FROM_LOOP
whileelsestmt ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK else_suitel COME_FROM_LOOP
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK COME_FROM_LOOP
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK JUMP_BACK COME_FROM_LOOP
whilestmt ::= SETUP_LOOP testexpr returns POP_TOP POP_BLOCK COME_FROM_LOOP
withasstmt ::= expr SETUP_WITH store suite_stmts_opt POP_BLOCK LOAD_CONST COME_FROM_WITH WITH_CLEANUP END_FINALLY
withstmt ::= expr SETUP_WITH POP_TOP suite_stmts_opt POP_BLOCK LOAD_CONST COME_FROM_WITH WITH_CLEANUP END_FINALLY
##########################################################################################
iflaststmtl ::= testexpr c_stmts_opt JUMP_BACK COME_FROM_LOOP
ifelsestmtl ::= testexpr c_stmts_opt JUMP_BACK else_suitel
iflaststmt ::= testexpr c_stmts_opt JUMP_ABSOLUTE
@@ -224,6 +234,7 @@ class Python30Parser(Python31Parser):
whileelsestmt ::= SETUP_LOOP testexpr l_stmts JUMP_BACK POP_BLOCK
else_suitel COME_FROM_LOOP
################################################################
# No JUMP_IF_FALSE_OR_POP, JUMP_IF_TRUE_OR_POP,
# POP_JUMP_IF_FALSE, or POP_JUMP_IF_TRUE

34
uncompyle6/parsers/parse31.py
View File

@@ -32,11 +32,45 @@ class Python31Parser(Python32Parser):
load ::= LOAD_FAST
load ::= LOAD_NAME
"""
def remove_rules_31(self):
self.remove_rules("""
# DUP_TOP_TWO is DUP_TOPX in 3.1 and earlier
subscript2 ::= expr expr DUP_TOP_TWO BINARY_SUBSCR
""")
def customize_grammar_rules(self, tokens, customize):
super(Python31Parser, self).customize_grammar_rules(tokens, customize)
self.remove_rules_31()
return
pass
class Python31ParserSingle(Python31Parser, PythonParserSingle):
pass
if __name__ == '__main__':
# Check grammar
p = Python31Parser()
p.remove_rules_31()
p.check_grammar()
from uncompyle6 import PYTHON_VERSION, IS_PYPY
if PYTHON_VERSION == 3.1:
lhs, rhs, tokens, right_recursive, dup_rhs = p.check_sets()
from uncompyle6.scanner import get_scanner
s = get_scanner(PYTHON_VERSION, IS_PYPY)
opcode_set = set(s.opc.opname).union(set(
"""JUMP_BACK CONTINUE RETURN_END_IF COME_FROM
LOAD_GENEXPR LOAD_ASSERT LOAD_SETCOMP LOAD_DICTCOMP LOAD_CLASSNAME
LAMBDA_MARKER RETURN_LAST
""".split()))
## FIXME: try this
remain_tokens = set(tokens) - opcode_set
import re
remain_tokens = set([re.sub(r'_\d+$', '', t) for t in remain_tokens])
remain_tokens = set([re.sub('_CONT$', '', t) for t in remain_tokens])
remain_tokens = set(remain_tokens) - opcode_set
print(remain_tokens)
import sys
if len(sys.argv) > 1:
from spark_parser.spark import rule2str
for rule in sorted(p.rule2name.items()):
print(rule2str(rule[0]))