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Allow the parser to avoid nested processing of invalid rules (GH-31252)

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Pablo Galindo Salgado 2022-02-10 13:12:14 +00:00 • committed by GitHub
parent 2cea8c29cf
commit 390459de6d
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6 changed files with 1998 additions and 1997 deletions
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@ -1078,6 +1078,7 @@ invalid_kwarg:
RAISE_SYNTAX_ERROR_KNOWN_RANGE(
a, b, "expression cannot contain assignment, perhaps you meant \"==\"?") }
# IMPORTANT: Note that the "_without_invalid" suffix causes the rule to not call invalid rules under it
expression_without_invalid[expr_ty]:
| a=disjunction 'if' b=disjunction 'else' c=expression { _PyAST_IfExp(b, a, c, EXTRA) }
| disjunction
@ -1095,16 +1096,14 @@ invalid_expression:
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Perhaps you forgot a comma?") }
| a=disjunction 'if' b=disjunction !('else'|':') { RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "expected 'else' after 'if' expression") }
invalid_left_assignment_prefixes(memo): list|tuple|genexp|'True'|'None'|'False'
invalid_named_expression:
invalid_named_expression(memo):
| a=expression ':=' expression {
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(
a, "cannot use assignment expressions with %s", _PyPegen_get_expr_name(a)) }
| a=NAME '=' b=bitwise_or !('='|':=') {
p->in_raw_rule ? NULL : RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Maybe you meant '==' or ':=' instead of '='?") }
| !invalid_left_assignment_prefixes a=bitwise_or b='=' bitwise_or !('='|':=') {
p->in_raw_rule ? NULL : RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot assign to %s here. Maybe you meant '==' instead of '='?",
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Maybe you meant '==' or ':=' instead of '='?") }
| !(list|tuple|genexp|'True'|'None'|'False') a=bitwise_or b='=' bitwise_or !('='|':=') {
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot assign to %s here. Maybe you meant '==' instead of '='?",
_PyPegen_get_expr_name(a)) }
invalid_assignment: