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CC Mode: A new operator and some new keywords for C++20

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* lisp/progmodes/cc-langs.el (c-operators, c-overloadable-operators)
(c-arithmetic-operators): Add the "spaceship" operator for C++.
(c-primitive-type-kwds): Add char8_t for C++.
(c-decl-hangon-kwds, c-paren-nontype-kwds): Add alignas for C++.
This commit is contained in:
Alan Mackenzie 2022-10-04 17:13:56 +00:00
parent bf9d3ddac0
commit 9107176511
1 changed files with 12 additions and 5 deletions
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17
lisp/progmodes/cc-langs.el
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@ -1330,6 +1330,10 @@ since CC Mode treats every identifier as an expression."
,@(when (c-major-mode-is 'java-mode)
'(">>>")))
;; The C++ "spaceship" operator.
,@(when (c-major-mode-is 'c++-mode)
`((left-assoc "<=>")))
;; Relational.
(left-assoc "<" ">" "<=" ">="
,@(when (c-major-mode-is 'java-mode)
@ -1443,7 +1447,7 @@ form\". See also `c-op-identifier-prefix'."
"^" "??'" "xor" "&" "bitand" "|" "??!" "bitor" "~" "??-" "compl"
"!" "=" "<" ">" "+=" "-=" "*=" "/=" "%=" "^="
"??'=" "xor_eq" "&=" "and_eq" "|=" "??!=" "or_eq"
"<<" ">>" ">>=" "<<=" "==" "!=" "not_eq" "<=" ">="
"<<" ">>" ">>=" "<<=" "==" "!=" "not_eq" "<=>" "<=" ">="
"&&" "and" "||" "??!??!" "or" "++" "--" "," "->*" "->"
"()" "[]" "<::>" "??(??)")
;; These work like identifiers in Pike.
@ -1565,8 +1569,10 @@ operators."
"List of all arithmetic operators, including \"+=\", etc."
;; Note: in the following, there are too many operators for AWK and IDL.
t (append (c-lang-const c-assignment-operators)
'("+" "-" "*" "/" "%"
`("+" "-" "*" "/" "%"
"<<" ">>"
,@(if (c-major-mode-is 'c++-mode)
'("<=>"))
"<" ">" "<=" ">="
"==" "!="
"&" "^" "|"
@ -2216,7 +2222,7 @@ the appropriate place for that."
'("_Bool" "_Complex" "_Imaginary") ; Conditionally defined in C99.
(c-lang-const c-primitive-type-kwds))
c++ (append
'("bool" "wchar_t" "char16_t" "char32_t")
'("bool" "wchar_t" "char8_t" "char16_t" "char32_t")
(c-lang-const c-primitive-type-kwds))
;; Objective-C extends C, but probably not the new stuff in C99.
objc (append
@ -2713,7 +2719,8 @@ one of `c-type-list-kwds', `c-ref-list-kwds',
(c c++) '(;; GCC extension.
"__attribute__"
;; MSVC extension.
"__declspec"))
"__declspec")
c++ (append (c-lang-const c-decl-hangon-kwds) '("alignas")))
(c-lang-defconst c-decl-hangon-key
;; Adorned regexp matching `c-decl-hangon-kwds'.
@ -2937,7 +2944,7 @@ contain type identifiers."
"__attribute__"
;; MSVC extension.
"__declspec")
c++ (append (c-lang-const c-paren-nontype-kwds) '("noexcept")))
c++ (append (c-lang-const c-paren-nontype-kwds) '("noexcept" "alignas")))
(c-lang-defconst c-paren-nontype-key
t (c-make-keywords-re t (c-lang-const c-paren-nontype-kwds)))