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Add three C++20 coroutine keywords, co_await, co_yield, and co_return

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* lisp/progmodes/cc-langs.el (c-operators): Add co_await and co_yield to the
C++ value of "Exception" keywords.
(c-return-kwds): Create a C++ value containing co_return.
(c-simple-stmt-kwds): Add co_return to the C++ value.

Copyright-paperwork-exempt: yes.
This commit is contained in:
Carl Lei 2020-05-24 11:52:24 +00:00 committed by Alan Mackenzie
parent e021c2dc22
commit ced29038df
1 changed files with 3 additions and 1 deletions
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4
lisp/progmodes/cc-langs.el
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@ -1174,7 +1174,7 @@ since CC Mode treats every identifier as an expression."
;; Exception.
,@(when (c-major-mode-is 'c++-mode)
'((prefix "throw")))
'((prefix "throw" "co_await" "co_yield")))
;; Sequence.
(left-assoc ","))
@ -2040,6 +2040,7 @@ the appropriate place for that."
(c-lang-defconst c-return-kwds
"Keywords which return a value to the calling function."
t '("return")
c++ '("return" "co_return")
idl nil)
(c-lang-defconst c-return-key
@ -2822,6 +2823,7 @@ Keywords here should also be in `c-block-stmt-1-kwds'."
(c-lang-defconst c-simple-stmt-kwds
"Statement keywords followed by an expression or nothing."
t '("break" "continue" "goto" "return")
c++ '("break" "continue" "goto" "return" "co_return")
objc '("break" "continue" "goto" "return" "@throw")
;; Note: `goto' is not valid in Java, but the keyword is still reserved.
java '("break" "continue" "goto" "return" "throw")