8000 Fix syntax errors in grammar · python/cpython@4f6c5df · GitHub
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lysnikolaoulysnikolaou
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Fix syntax errors in grammar
1 parent 62ace68 commit 4f6c5df

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2 files changed

+2260
-1497
lines changed

2 files changed

+2260
-1497
lines changed

‎Grammar/python.gram

Lines changed: 49 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -929,7 +929,7 @@ fstring_middle[expr_ty]:
929929
fstring_replacement_field[expr_ty]:
930930
| '{' a=annotated_rhs debug_expr='='? conversion=[fstring_conversion] format=[fstring_full_format_spec] rbrace='}' {
931931
_PyPegen_formatted_value(p, a, debug_expr, conversion, format, rbrace, EXTRA) }
932-
| invalid_replacement_field
932+
| invalid_fstring_replacement_field
933933
fstring_conversion[ResultTokenWithMetadata*]:
934934
| conv_token="!" conv=NAME { _PyPegen_check_fstring_conversion(p, conv_token, conv) }
935935
fstring_full_format_spec[ResultTokenWithMetadata*]:
@@ -940,10 +940,19 @@ fstring_format_spec[expr_ty]:
940940
fstring[expr_ty]:
941941
| a=FSTRING_START b=fstring_middle* c=FSTRING_END { _PyPegen_joined_str(p, a, (asdl_expr_seq*)b, c) }
942942

943+
tstring_format_spec_replacement_field[expr_ty]:
944+
| '{' a=annotated_rhs debug_expr='='? conversion=[fstring_conversion] format=[tstring_full_format_spec] rbrace='}' {
945+
_PyPegen_formatted_value(p, a, debug_expr, conversion, format, rbrace, EXTRA) }
946+
| invalid_tstring_replacement_field
947+
tstring_format_spec[expr_ty]:
948+
| t=FSTRING_MIDDLE { _PyPegen_decoded_constant_from_token(p, t) }
949+
| tstring_format_spec_replacement_field
950+
tstring_full_format_spec[ResultTokenWithMetadata*]:
951+
| colon=':' spec=tstring_format_spec* { _PyPegen_setup_full_format_spec(p, colon, (asdl_expr_seq *) spec, EXTRA) }
943952
tstring_replacement_field[expr_ty]:
944-
| '{' a=annotated_rhs debug_expr='='? conversion=[fstring_conversion] format=[fstring_full_format_spec] rbrace='}' {
953+
| '{' a=annotated_rhs debug_expr='='? conversion=[fstring_conversion] format=[tstring_full_format_spec] rbrace='}' {
945954
_PyPegen_interpolation(p, a, debug_expr, conversion, format, rbrace, EXTRA) }
946-
| invalid_replacement_field
955+
| invalid_tstring_replacement_field
947956
tstring_middle[expr_ty]:
948957
| tstring_replacement_field
949958
| t=FSTRING_MIDDLE { _PyPegen_constant_from_token(p, t) }
@@ -1458,39 +1467,49 @@ invalid_starred_expression_unpacking:
14581467
invalid_starred_expression:
14591468
| '*' { RAISE_SYNTAX_ERROR("Invalid star expression") }
14601469

1461-
invalid_replacement_field:
1462-
| '{' a='=' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "%c-string: valid expression required before '='",
1463-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1464-
| '{' a='!' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "%c-string: valid expression required before '!'",
1465-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1466-
| '{' a=':' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "%c-string: valid expression required before ':'",
1467-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1468-
| '{' a='}' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "%c-string: valid expression required before '}'",
1469-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1470-
| '{' !annotated_rhs { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting a valid expression after '{'",
1471-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f')}
1470+
invalid_fstring_replacement_field:
1471+
| '{' a='=' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "f-string: valid expression required before '='") }
1472+
| '{' a='!' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "f-string: valid expression required before '!'") }
1473+
| '{' a=':' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "f-string: valid expression required before ':'") }
1474+
| '{' a='}' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "f-string: valid expression required before '}'") }
1475+
| '{' !annotated_rhs { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting a valid expression after '{'") }
14721476
| '{' annotated_rhs !('=' | '!' | ':' | '}') {
1473-
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting '=', or '!', or ':', or '}'",
1474-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1477+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting '=', or '!', or ':', or '}'") }
14751478
| '{' annotated_rhs '=' !('!' | ':' | '}') {
1476-
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting '!', or ':', or '}'",
1477-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1478-
| '{' annotated_rhs '='? invalid_conversion_character
1479+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting '!', or ':', or '}'") }
1480+
| '{' annotated_rhs '='? invalid_fstring_conversion_character
14791481
| '{' annotated_rhs '='? ['!' NAME] !(':' | '}') {
1480-
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting ':' or '}'",
1481-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1482+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting ':' or '}'") }
14821483
| '{' annotated_rhs '='? ['!' NAME] ':' fstring_format_spec* !'}' {
1483-
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting '}', or format specs",
1484-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1484+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting '}', or format specs") }
14851485
| '{' annotated_rhs '='? ['!' NAME] !'}' {
1486-
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: expecting '}'",
1487-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1486+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: expecting '}'") }
1487+
1488+
invalid_fstring_conversion_character:
1489+
| '!' &(':' | '}') { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: missing conversion character") }
1490+
| '!' !NAME { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("f-string: invalid conversion character") }
1491+
1492+
invalid_tstring_replacement_field:
1493+
| '{' a='=' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "t-string: valid expression required before '='") }
1494+
| '{' a='!' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "t-string: valid expression required before '!'") }
1495+
| '{' a=':' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "t-string: valid expression required before ':'") }
1496+
| '{' a='}' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "t-string: valid expression required before '}'") }
1497+
| '{' !annotated_rhs { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting a valid expression after '{'") }
1498+
| '{' annotated_rhs !('=' | '!' | ':' | '}') {
1499+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting '=', or '!', or ':', or '}'") }
1500+
| '{' annotated_rhs '=' !('!' | ':' | '}') {
1501+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting '!', or ':', or '}'") }
1502+
| '{' annotated_rhs '='? invalid_tstring_conversion_character
1503+
| '{' annotated_rhs '='? ['!' NAME] !(':' | '}') {
1504+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting ':' or '}'") }
1505+
| '{' annotated_rhs '='? ['!' NAME] ':' fstring_format_spec* !'}' {
1506+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting '}', or format specs") }
1507+
| '{' annotated_rhs '='? ['!' NAME] !'}' {
1508+
PyErr_Occurred() ? NULL : RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: expecting '}'") }
14881509

1489-
invalid_conversion_character:
1490-
| '!' &(':' | '}') { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: missing conversion character",
1491-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1492-
| '!' !NAME { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("%c-string: invalid conversion character",
1493-
TOK_GET_MODE(p->tok)->tstring ? 't' : 'f') }
1510+
invalid_tstring_conversion_character:
1511+
| '!' &(':' | '}') { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: missing conversion character") }
1512+
| '!' !NAME { RAISE_SYNTAX_ERROR_ON_NEXT_TOKEN("t-string: invalid conversion character") }
14941513

14951514
invalid_arithmetic:
14961515
| sum ('+'|'-'|'*'|'/'|'%'|'//'|'@') a='not' b=inversion { RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "'not' after an operator must be parenthesized") }

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