Add support for Zig programming language

AUTHORS.txt

@@ -286,3 +286,4 @@ Contributors:
 - G8t Guy <g8tguy@g8tguy.com>
 - Samia Ali <samiaab1990@gmail.com>
 - Alexandre Grison <a.grison@gmail.com>
+- sksat <sksat@sksat.net>

CHANGES.md

@@ -4,6 +4,7 @@ New languages:
 
 - (php-template) Explicit language to detect PHP templates (vs xml) [Josh Goebel][]
 - enh(python) Added `python-repl` for Python REPL sessions
+- *Zig* by [sksat][]
 
 New themes:
 
@@ -54,6 +55,7 @@ Developer Tools:
 [Taufik Nurrohman]: https://github.com/taufik-nurrohman
 [Josh Goebel]: https://github.com/yyyc514
 [Sean Williams]: https://github.com/hmmwhatsthisdo
+[sksat]: https://github.com/sk2sat
 
 
 ## Version 9.18.1

src/languages/zig.js

@@ -0,0 +1,104 @@
+/*
+Language: Zig
+Author: sksat <sksat@sksat.net>
+Description: Zig is a general-purpose programming language designed for robustness, optimality, and maintainability.
+Website: https://ziglang.org
+Category: system
+*/
+
+export default function(hljs) {
+  var ZIG_KEYWORDS =
+    'fn usingnamespace test ' +
+    // storage
+    'const var extern packed export pub noalias inline noinline comptime ' +
+    'callconv volatile allowzero align linksection threadlocal ' +
+    // structure
+    'struct enum union error ' +
+    // statement
+    'break return continue asm defer errdefer unreachable try catch ' +
+    'async noasync await suspend resume ' +
+    // conditional
+    'if else switch and or orelse ' +
+    // repeat
+    'while for ' +
+    // constant
+    'true false null undefined';
+  var ZIG_BUILTINS = 
+    // type
+    'noreturn type anyerror anyframe ' +
+    'void comptime_int comptime_float ' +
+    'bool isize usize ' +
+    'f16 f32 f64 f128 ' +
+    // C type
+    'c_short c_ushort c_int c_uint c_long c_ulong c_longlong c_ulonglong c_longdouble c_void';
+
+  var ZIG_BUILTIN_FUNC =
+    'addWithOverflow ArgType atomicLoad atomicStore bitCast breakpoint ' +
+    'alignCast alignOf cDefine cImport cInclude ' +
+    'cUndef canImplicitCast clz cmpxchgWeak cmpxchgStrong compileError ' +
+    'compileLog ctz popCount divExact divFloor divTrunc ' +
+    'embedFile export tagName TagType errorName call ' +
+    'errorReturnTrace fence fieldParentPtr field unionInit ' +
+    'frameAddress import newStackCall asyncCall intToPtr IntType ' +
+    'memberCount memberName memberType as ' +
+    'memcpy memset mod mulWithOverflow splat ' +
+    'bitOffsetOf byteOffsetOf OpaqueType panic ptrCast ' +
+    'ptrToInt rem returnAddress setCold Type shuffle ' +
+    'setRuntimeSafety setEvalBranchQuota setFloatMode ' +
+    'setGlobalLinkage setGlobalSection shlExact This hasDecl hasField ' +
+    'shlWithOverflow shrExact sizeOf bitSizeOf sqrt byteSwap subWithOverflow intCast floatCast intToFloat floatToInt boolToInt errSetCast ' +
+    'truncate typeId typeInfo typeName TypeOf atomicRmw bytesToSlice sliceToBytes ' +
+    'intToError errorToInt intToEnum enumToInt setAlignStack frame Frame frameSize bitReverse Vector ' +
+    'sin cos exp exp2 log log2 log10 fabs floor ceil trunc round';
+
+  return {
+    name: 'Zig',
+    aliases: ['zig', 'ziglang'],
+    keywords: {
+      keyword:
+        ZIG_KEYWORDS,
+      literal:
+        'true false null undefined',
+      built_in:
+        ZIG_BUILTINS,
+    },
+
+    contains: [
+      hljs.C_LINE_COMMENT_MODE,
+      hljs.C_BLOCK_COMMENT_MODE,
+      {
+        className: 'string',
+        variants: [
+          hljs.QUOTE_STRING_MODE,
+        ]
+      },
+      {
+        className: 'number',
+        variants: [
+          hljs.C_NUMBER_MODE,
+        ]
+      },
+      {
+        className: 'type',
+        begin: /(i|u)(\d{3}|\d{2}|\d{1})/
+      },
+      {
+        className: 'meta',
+        begin: /@\s*[a-zA-Z]+\b/,
+        keywords: {'meta-keyword': ZIG_BUILTIN_FUNC},
+        contains: [
+          hljs.QUOTE_STRING_MODE,
+        ]
+      },
+      {
+        className: 'symbol',
+        begin: /'[a-zA-Z_][a-zA-Z0-9_]*/
+      },
+      {
+        className: 'function',
+        beginKeywords: 'fn', end: '(\\(|<)', excludeEnd: true,
+        contains: [hljs.TITLE_MODE]
+      },
+    ]
+  };
+}

test/detect/zig/default.txt

@@ -0,0 +1,5 @@
+const std = @import("std");
+
+pub fn main() anyerror!void {
+    std.debug.warn("All your base are belong to us.\n");
+}