forgejo/vendor/github.com/alecthomas/chroma/lexers/e/ebnf.go
mrsdizzie af7ffaa279
Server-side syntax highlighting for all code (#12047)
* Server-side syntax hilighting for all code

This PR does a few things:

* Remove all traces of highlight.js
* Use chroma library to provide fast syntax hilighting directly on the server
* Provide syntax hilighting for diffs
* Re-style both unified and split diffs views
* Add custom syntax hilighting styling for both regular and arc-green

Fixes #7729
Fixes #10157
Fixes #11825
Fixes #7728
Fixes #3872
Fixes #3682

And perhaps gets closer to #9553

* fix line marker

* fix repo search

* Fix single line select

* properly load settings

* npm uninstall highlight.js

* review suggestion

* code review

* forgot to call function

* fix test

* Apply suggestions from code review

suggestions from @silverwind thanks

Co-authored-by: silverwind <me@silverwind.io>

* code review

* copy/paste error

* Use const for highlight size limit

* Update web_src/less/_repository.less

Co-authored-by: Lauris BH <lauris@nix.lv>

* update size limit to 1MB and other styling tweaks

* fix highlighting for certain diff sections

* fix test

* add worker back as suggested

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
2020-07-01 00:34:03 +03:00

52 lines
1.1 KiB
Go
Vendored

package e
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Ebnf lexer.
var Ebnf = internal.Register(MustNewLexer(
&Config{
Name: "EBNF",
Aliases: []string{"ebnf"},
Filenames: []string{"*.ebnf"},
MimeTypes: []string{"text/x-ebnf"},
},
Rules{
"root": {
Include("whitespace"),
Include("comment_start"),
Include("identifier"),
{`=`, Operator, Push("production")},
},
"production": {
Include("whitespace"),
Include("comment_start"),
Include("identifier"),
{`"[^"]*"`, LiteralStringDouble, nil},
{`'[^']*'`, LiteralStringSingle, nil},
{`(\?[^?]*\?)`, NameEntity, nil},
{`[\[\]{}(),|]`, Punctuation, nil},
{`-`, Operator, nil},
{`;`, Punctuation, Pop(1)},
{`\.`, Punctuation, Pop(1)},
},
"whitespace": {
{`\s+`, Text, nil},
},
"comment_start": {
{`\(\*`, CommentMultiline, Push("comment")},
},
"comment": {
{`[^*)]`, CommentMultiline, nil},
Include("comment_start"),
{`\*\)`, CommentMultiline, Pop(1)},
{`[*)]`, CommentMultiline, nil},
},
"identifier": {
{`([a-zA-Z][\w \-]*)`, Keyword, nil},
},
},
))