mirror of
https://github.com/alecthomas/chroma.git
synced 2025-02-09 13:23:51 +02:00
51 lines
1.7 KiB
Go
51 lines
1.7 KiB
Go
package lexers
|
|
|
|
import (
|
|
. "github.com/alecthomas/chroma" // nolint
|
|
)
|
|
|
|
// Markdown lexer.
|
|
var Markdown = Register(NewLexer(
|
|
&Config{
|
|
Name: "markdown",
|
|
Aliases: []string{"md"},
|
|
Filenames: []string{"*.md"},
|
|
MimeTypes: []string{"text/x-markdown"},
|
|
},
|
|
map[string][]Rule{
|
|
"root": []Rule{
|
|
{`^(#)([^#].+\n)`, ByGroups(GenericHeading, Text), nil},
|
|
{`^(#{2,6})(.+\n)`, ByGroups(GenericSubheading, Text), nil},
|
|
{`^(\s*)([*-] )(\[[ xX]\])( .+\n)`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
|
|
{`^(\s*)([*-])(\s)(.+\n)`, ByGroups(Text, Keyword, Text, UsingSelf("inline")), nil},
|
|
{`^(\s*)([0-9]+\.)( .+\n)`, ByGroups(Text, Keyword, UsingSelf("inline")), nil},
|
|
{`^(\s*>\s)(.+\n)`, ByGroups(Keyword, GenericEmph), nil},
|
|
{"^(```\n)([\\w\\W]*?)(^```$)", ByGroups(String, Text, String), nil},
|
|
{"^(```)(\\w+)(\n)([\\w\\W]*?)(^```$)", EmitterFunc(handleCodeblock), nil},
|
|
Include(`inline`),
|
|
},
|
|
`inline`: []Rule{
|
|
{`\\.`, Text, nil},
|
|
{`(\s)([*_][^*_]+[*_])(\W|\n)`, ByGroups(Text, GenericEmph, Text), nil},
|
|
{`(\s)(__.*?__)`, ByGroups(Whitespace, GenericUnderline), nil},
|
|
{`(\s)(\*\*.*\*\*)`, ByGroups(Text, GenericStrong), nil},
|
|
{`(\s)(~~[^~]+~~)`, ByGroups(Text, GenericDeleted), nil},
|
|
{"`[^`]+`", StringBacktick, nil},
|
|
{`[@#][\w/:]+`, NameEntity, nil},
|
|
{`(!?\[)([^]]+)(\])(\()([^)]+)(\))`, ByGroups(Text, NameTag, Text, Text, NameAttribute, Text), nil},
|
|
{`[^\\\s]+`, Text, nil},
|
|
{`.`, Text, nil},
|
|
},
|
|
},
|
|
))
|
|
|
|
func handleCodeblock(groups []string, lexer Lexer, out func(*Token)) {
|
|
out(&Token{String, groups[1]})
|
|
out(&Token{String, groups[2]})
|
|
out(&Token{Text, groups[3]})
|
|
code := groups[4]
|
|
lexer = Registry.Get(groups[2])
|
|
lexer.Tokenise(nil, code, out)
|
|
out(&Token{String, groups[5]})
|
|
}
|