122 lines
3.5 KiB
Go
122 lines
3.5 KiB
Go
|
package lexers
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
. "github.com/alecthomas/chroma" // nolint
|
||
|
|
)
|
||
|
|
|
||
|
|
// nixb matches right boundary of a nix word. Use it instead of \b.
|
||
|
|
const nixb = `(?![a-zA-Z0-9_'-])`
|
||
|
|
|
||
|
|
// Nix lexer.
|
||
|
|
var Nix = Register(MustNewLexer(
|
||
|
|
&Config{
|
||
|
|
Name: "Nix",
|
||
|
|
Aliases: []string{"nixos", "nix"},
|
||
|
|
Filenames: []string{"*.nix"},
|
||
|
|
MimeTypes: []string{"text/x-nix"},
|
||
|
|
},
|
||
|
|
Rules{
|
||
|
|
"root": {
|
||
|
|
Include("keywords"),
|
||
|
|
Include("builtins"),
|
||
|
|
// "./path" and ".float" literals have to be above "." operator
|
||
|
|
Include("literals"),
|
||
|
|
Include("operators"),
|
||
|
|
{`#.*$`, CommentSingle, nil},
|
||
|
|
{`/\*`, CommentMultiline, Push("comment")},
|
||
|
|
{`\(`, Punctuation, Push("paren")},
|
||
|
|
{`\[`, Punctuation, Push("list")},
|
||
|
|
{`"`, StringDouble, Push("qstring")},
|
||
|
|
{`''`, StringSingle, Push("istring")},
|
||
|
|
{`{`, Punctuation, Push("scope")},
|
||
|
|
{`let` + nixb, Keyword, Push("scope")},
|
||
|
|
Include("id"),
|
||
|
|
Include("space"),
|
||
|
|
},
|
||
|
|
"keywords": {
|
||
|
|
{`import` + nixb, KeywordNamespace, nil},
|
||
|
|
{Words(``, nixb, strings.Fields("rec inherit with if then else assert")...), Keyword, nil},
|
||
|
|
},
|
||
|
|
"builtins": {
|
||
|
|
{`throw` + nixb, NameException, nil},
|
||
|
|
{Words(``, nixb, strings.Fields("abort baseNameOf builtins currentTime dependencyClosure derivation dirOf fetchTarball filterSource getAttr getEnv hasAttr isNull map removeAttrs toString toXML")...), NameBuiltin, nil},
|
||
|
|
},
|
||
|
|
"literals": {
|
||
|
|
{Words(``, nixb, strings.Fields("true false null")...), NameConstant, nil},
|
||
|
|
Include("uri"),
|
||
|
|
Include("path"),
|
||
|
|
Include("int"),
|
||
|
|
Include("float"),
|
||
|
|
},
|
||
|
|
"operators": {
|
||
|
|
{` [/-] `, Operator, nil},
|
||
|
|
{`(\.)(\${)`, ByGroups(Operator, StringInterpol), Push("interpol")},
|
||
|
|
{`(\?)(\s*)(\${)`, ByGroups(Operator, Text, StringInterpol), Push("interpol")},
|
||
|
|
{Words(``, ``, strings.Fields("@ . ? ++ + != ! // == && || -> <= < >= > *")...), Operator, nil},
|
||
|
|
{`[;:]`, Punctuation, nil},
|
||
|
|
},
|
||
|
|
"comment": {
|
||
|
|
{`\*/`, CommentMultiline, Pop(1)},
|
||
|
|
{`.|\n`, CommentMultiline, nil},
|
||
|
|
},
|
||
|
|
"paren": {
|
||
|
|
{`\)`, Punctuation, Pop(1)},
|
||
|
|
Include("root"),
|
||
|
|
},
|
||
|
|
"list": {
|
||
|
|
{`\]`, Punctuation, Pop(1)},
|
||
|
|
Include("root"),
|
||
|
|
},
|
||
|
|
"qstring": {
|
||
|
|
{`"`, StringDouble, Pop(1)},
|
||
|
|
{`\${`, StringInterpol, Push("interpol")},
|
||
|
|
{`\\.`, StringEscape, nil},
|
||
|
|
{`.|\n`, StringDouble, nil},
|
||
|
|
},
|
||
|
|
"istring": {
|
||
|
|
{`''\$`, StringEscape, nil}, // "$"
|
||
|
|
{`'''`, StringEscape, nil}, // "''"
|
||
|
|
{`''\\.`, StringEscape, nil}, // "\."
|
||
|
|
{`''`, StringSingle, Pop(1)},
|
||
|
|
{`\${`, StringInterpol, Push("interpol")},
|
||
|
|
// The next rule is important: "$" escapes any symbol except "{"!
|
||
|
|
{`\$.`, StringSingle, nil}, // "$."
|
||
|
|
{`.|\n`, StringSingle, nil},
|
||
|
|
},
|
||
|
|
"scope": {
|
||
|
|
{`}:`, Punctuation, Pop(1)},
|
||
|
|
{`}`, Punctuation, Pop(1)},
|
||
|
|
{`in` + nixb, Keyword, Pop(1)},
|
||
|
|
{`\${`, StringInterpol, Push("interpol")},
|
||
|
|
Include("root"), // "==" has to be above "="
|
||
|
|
{Words(``, ``, strings.Fields("= ? ,")...), Operator, nil},
|
||
|
|
},
|
||
|
|
"interpol": {
|
||
|
|
{`}`, StringInterpol, Pop(1)},
|
||
|
|
Include("root"),
|
||
|
|
},
|
||
|
|
"id": {
|
||
|
|
{`[a-zA-Z_][a-zA-Z0-9_'-]*`, Name, nil},
|
||
|
|
},
|
||
|
|
"uri": {
|
||
|
|
{`[a-zA-Z][a-zA-Z0-9+.-]*:[a-zA-Z0-9%/?:@&=+$,_.!~*'-]+`, StringDoc, nil},
|
||
|
|
},
|
||
|
|
"path": {
|
||
|
|
{`[a-zA-Z0-9._+-]*(/[a-zA-Z0-9._+-]+)+`, StringRegex, nil},
|
||
|
|
{`~(/[a-zA-Z0-9._+-]+)+/?`, StringRegex, nil},
|
||
|
|
{`<[a-zA-Z0-9._+-]+(/[a-zA-Z0-9._+-]+)*>`, StringRegex, nil},
|
||
|
|
},
|
||
|
|
"int": {
|
||
|
|
{`-?[0-9]+` + nixb, NumberInteger, nil},
|
||
|
|
},
|
||
|
|
"float": {
|
||
|
|
{`-?(([1-9][0-9]*\.[0-9]*)|(0?\.[0-9]+))([Ee][+-]?[0-9]+)?` + nixb, NumberFloat, nil},
|
||
|
|
},
|
||
|
|
"space": {
|
||
|
|
{`[ \t\r\n]+`, Text, nil},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
))
|