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package m
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Metal lexer.
var Metal = internal.Register(MustNewLazyLexer(
&Config{
Name: "Metal",
Aliases: []string{"metal"},
Filenames: []string{"*.metal"},
MimeTypes: []string{"text/x-metal"},
EnsureNL: true,
},
metalRules,
))
func metalRules() Rules {
return Rules{
"statements": {
{Words(``, `\b`, `namespace`, `operator`, `template`, `this`, `using`, `constexpr`), Keyword, nil},
{`(enum)\b(\s+)(class)\b(\s*)`, ByGroups(Keyword, Text, Keyword, Text), Push("classname")},
{`(class|struct|enum|union)\b(\s*)`, ByGroups(Keyword, Text), Push("classname")},
{`\[\[.+\]\]`, NameAttribute, nil},
{`(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*`, LiteralNumberFloat, nil},
{`(\d+\.\d*|\.\d+|\d+[fF])[fF]?`, LiteralNumberFloat, nil},
{`0[xX]([0-9A-Fa-f]('?[0-9A-Fa-f]+)*)[LlUu]*`, LiteralNumberHex, nil},
{`0('?[0-7]+)+[LlUu]*`, LiteralNumberOct, nil},
{`0[Bb][01]('?[01]+)*[LlUu]*`, LiteralNumberBin, nil},
{`[0-9]('?[0-9]+)*[LlUu]*`, LiteralNumberInteger, nil},
{`\*/`, Error, nil},
{`[~!%^&*+=|?:<>/-]`, Operator, nil},
{`[()\[\],.]`, Punctuation, nil},
{Words(``, `\b`, `break`, `case`, `const`, `continue`, `do`, `else`, `enum`, `extern`, `for`, `if`, `return`, `sizeof`, `static`, `struct`, `switch`, `typedef`, `union`, `while`), Keyword, nil},
{`(bool|float|half|long|ptrdiff_t|size_t|unsigned|u?char|u?int((8|16|32|64)_t)?|u?short)\b`, KeywordType, nil},
{`(bool|float|half|u?(char|int|long|short))(2|3|4)\b`, KeywordType, nil},
{`packed_(float|half|long|u?(char|int|short))(2|3|4)\b`, KeywordType, nil},
{`(float|half)(2|3|4)x(2|3|4)\b`, KeywordType, nil},
{`atomic_u?int\b`, KeywordType, nil},
{`(rg?(8|16)(u|s)norm|rgba(8|16)(u|s)norm|srgba8unorm|rgb10a2|rg11b10f|rgb9e5)\b`, KeywordType, nil},
{`(array|depth(2d|cube)(_array)?|depth2d_ms(_array)?|sampler|texture_buffer|texture(1|2)d(_array)?|texture2d_ms(_array)?|texture3d|texturecube(_array)?|uniform|visible_function_table)\b`, KeywordType, nil},
{`(true|false|NULL)\b`, NameBuiltin, nil},
{Words(``, `\b`, `device`, `constant`, `ray_data`, `thread`, `threadgroup`, `threadgroup_imageblock`), Keyword, nil},
{`([a-zA-Z_]\w*)(\s*)(:)(?!:)`, ByGroups(NameLabel, Text, Punctuation), nil},
{`[a-zA-Z_]\w*`, Name, nil},
},
"root": {
Include("whitespace"),
{`(fragment|kernel|vertex)?((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;{]*)(\{)`, ByGroups(Keyword, UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), Push("function")},
{`(fragment|kernel|vertex)?((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;]*)(;)`, ByGroups(Keyword, UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), nil},
Default(Push("statement")),
},
"classname": {
{`(\[\[.+\]\])(\s*)`, ByGroups(NameAttribute, Text), nil},
{`[a-zA-Z_]\w*`, NameClass, Pop(1)},
{`\s*(?=[>{])`, Text, Pop(1)},
},
"whitespace": {
{`^#if\s+0`, CommentPreproc, Push("if0")},
{`^#`, CommentPreproc, Push("macro")},
{`^(\s*(?:/[*].*?[*]/\s*)?)(#if\s+0)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("if0")},
{`^(\s*(?:/[*].*?[*]/\s*)?)(#)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("macro")},
{`\n`, Text, nil},
{`\s+`, Text, nil},
{`\\\n`, Text, nil},
{`//(\n|[\w\W]*?[^\\]\n)`, CommentSingle, nil},
{`/(\\\n)?[*][\w\W]*?[*](\\\n)?/`, CommentMultiline, nil},
{`/(\\\n)?[*][\w\W]*`, CommentMultiline, nil},
},
"statement": {
Include("whitespace"),
Include("statements"),
{`[{]`, Punctuation, Push("root")},
{`[;}]`, Punctuation, Pop(1)},
},
"function": {
Include("whitespace"),
Include("statements"),
{`;`, Punctuation, nil},
{`\{`, Punctuation, Push()},
{`\}`, Punctuation, Pop(1)},
},
"macro": {
{`(include)(\s*(?:/[*].*?[*]/\s*)?)([^\n]+)`, ByGroups(CommentPreproc, Text, CommentPreprocFile), nil},
{`[^/\n]+`, CommentPreproc, nil},
{`/[*](.|\n)*?[*]/`, CommentMultiline, nil},
{`//.*?\n`, CommentSingle, Pop(1)},
{`/`, CommentPreproc, nil},
{`(?<=\\)\n`, CommentPreproc, nil},
{`\n`, CommentPreproc, Pop(1)},
},
"if0": {
{`^\s*#if.*?(?<!\\)\n`, CommentPreproc, Push()},
{`^\s*#el(?:se|if).*\n`, CommentPreproc, Pop(1)},
{`^\s*#endif.*?(?<!\\)\n`, CommentPreproc, Pop(1)},
{`.*?\n`, Comment, nil},
},
}
}
|
