%% This is part of the OpTeX project, see http://petr.olsak.net/optex \_codedecl \_hisyntaxc {Syntax highlighting for C sources <2023-03-02>} \_newtoks \_hisyntaxc \_newtoks \_hicolorsc \_global\_hicolorsc={% colors for C language \_hicolor K \Red % Keywords \_hicolor S \Magenta % Strings \_hicolor C \Green % Comments \_hicolor N \Cyan % Numbers \_hicolor P \Blue % Preprocessor \_hicolor O \Blue % Non-letters } \_global\_hisyntaxc={% \_the\_hicolorsc \_let\c=\_relax \_let\e=\_relax \_let\o=\_relax \_replfromto {/*}{*/} {\x C{/*#1*/}}% /*...*/ \_replfromto {//}{^^J} {\z C{//#1}^^J}% //... \_replfromto {\_string#}{^^J} {\z P{\##1}^^J}% #include ... \_replthis {\_string\"} {{\_string\"}}% \" protected inside strings \_replfromto {"}{"} {\x S{"#1"}}% "..." % \_edef\_tmpa {()\_string{\_string}+-*/=[]<>,:;\_pcent\_string&\_string^|!?}% non-letters \_ea \_foreach \_tmpa \_do {\_replthis{#1}{\n\o#1\n}} \_foreach % keywords {alignas}{alignof}{auto}{bool}{break}{case}{char}{const}% {constexpr}{continue}{default}{do}{double}{else}{enum}{extern}% {false}{float}{for}{goto}{if}{inline}{int}{long}{nullptr}% {register}{restrict}{return}{short}{signed}{sizeof}{static}% {static_assert}{struct}{switch}{thread_local}{true}{typedef}% {typeof}{typeof_unqual}{union}{unsigned}{void}{volatile}{while}% {_Alignas}{_Alignof}{_Atomic}{_BitInt}{_Bool}{_Complex}% {_Decimal128}{_Decimal32}{_Decimal64}{_Generic}{_Imaginary}% {_Noreturn}{_Static_assert}{_Thread_local} \_do {\_replthis{\n#1\n}{\z K{#1}}} \_replthis{.}{\n.\n} % numbers \_foreach 0123456789 \_do {\_replfromto{\n#1}{\n}{\c#1##1\e}} \_replthis{\e.\c}{.} \_replthis{\e.\n}{.\e} \_replthis{\n.\c}{\c.} \_replthis{e\e\o+\c}{e+}\_replthis{e\e\o-\c}{e-} \_replthis{E\e\o+\c}{E+}\_replthis{E\e\o-\c}{E-} \_def\o#1{\z O{#1}} \_def\c#1\e{\z N{#1}} } \_endcode %------------------------------------------------ Each `hisyntax-.opm` file must declare the token list `\_hisyntax` using `\newtoks` and must declare the syntax declaration in it. The second token list `\_hicolors` is optional but recommended. User can re-declare his/her own colors by `\hicolors` which has precedence before `\_hicolors`. The public variants can be declared if you want to give these token lists to the public namespace. But it is not explicitly needed. All settings must be global here because the file is typically read inside a group and we need not read it repeatedly before each code chunk again and again. Note that `\foreach` is used for each non-letters (expanded via \string because we needn't treat with active or special TeX characters). The keyword is applied in the `\foreach` loop too. See `hi-sytax.opm` for more information about `\hicolor`, `\replfromto` and `\replthis` macros. \endinput 2023-03-02: more C keywords added 2020-04-03: released