Update CHANGES.md for 21.10b0 release (#2583)

[etc/vim.git] / src / blib2to3 / Grammar.txt

diff --git a/src/blib2to3/Grammar.txt b/src/blib2to3/Grammar.txt
index f14e2b516bd82725802044a5d5d2daa269e19506..ac8a067378d71ec0ba4f05a2a2af5b2a68fbfad7 100644 (file)
--- a/src/blib2to3/Grammar.txt
+++ b/src/blib2to3/Grammar.txt
@@ -12,7 +12,7 @@ file_input: (NEWLINE | stmt)* ENDMARKER
 single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
 eval_input: testlist NEWLINE* ENDMARKER
 
 single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
 eval_input: testlist NEWLINE* ENDMARKER
 

-decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
+decorator: '@' namedexpr_test NEWLINE

 decorators: decorator+
 decorated: decorators (classdef | funcdef | async_funcdef)
 async_funcdef: ASYNC funcdef
 decorators: decorator+
 decorated: decorators (classdef | funcdef | async_funcdef)
 async_funcdef: ASYNC funcdef


@@ -77,7 +77,7 @@ small_stmt: (expr_stmt | print_stmt  | del_stmt | pass_stmt | flow_stmt |
              import_stmt | global_stmt | exec_stmt | assert_stmt)
 expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
                      ('=' (yield_expr|testlist_star_expr))*)
              import_stmt | global_stmt | exec_stmt | assert_stmt)
 expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
                      ('=' (yield_expr|testlist_star_expr))*)

-annassign: ':' test ['=' test]
+annassign: ':' test ['=' (yield_expr|testlist_star_expr)]

 testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
 augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
             '<<=' | '>>=' | '**=' | '//=')
 testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
 augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
             '<<=' | '>>=' | '**=' | '//=')


@@ -157,14 +157,14 @@ testlist_gexp: (namedexpr_test|star_expr) ( old_comp_for | (',' (namedexpr_test|
 lambdef: 'lambda' [varargslist] ':' test
 trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
 subscriptlist: subscript (',' subscript)* [',']
 lambdef: 'lambda' [varargslist] ':' test
 trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
 subscriptlist: subscript (',' subscript)* [',']

-subscript: test | [test] ':' [test] [sliceop]
+subscript: test [':=' test] | [test] ':' [test] [sliceop]

 sliceop: ':' [test]
 exprlist: (expr|star_expr) (',' (expr|star_expr))* [',']
 testlist: test (',' test)* [',']
 dictsetmaker: ( ((test ':' test | '**' expr)
                  (comp_for | (',' (test ':' test | '**' expr))* [','])) |
 sliceop: ':' [test]
 exprlist: (expr|star_expr) (',' (expr|star_expr))* [',']
 testlist: test (',' test)* [',']
 dictsetmaker: ( ((test ':' test | '**' expr)
                  (comp_for | (',' (test ':' test | '**' expr))* [','])) |

-                ((test | star_expr)
-                (comp_for | (',' (test | star_expr))* [','])) )
+                ((test [':=' test] | star_expr)
+                (comp_for | (',' (test [':=' test] | star_expr))* [','])) )

 
 classdef: 'class' NAME ['(' [arglist] ')'] ':' suite
 
 
 classdef: 'class' NAME ['(' [arglist] ')'] ':' suite