forgejo/vendor/github.com/alecthomas/chroma/lexers/e/elm.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

60 lines
2 KiB
Go

package e
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Elm lexer.
var Elm = internal.Register(MustNewLexer(
&Config{
Name: "Elm",
Aliases: []string{"elm"},
Filenames: []string{"*.elm"},
MimeTypes: []string{"text/x-elm"},
},
Rules{
"root": {
{`\{-`, CommentMultiline, Push("comment")},
{`--.*`, CommentSingle, nil},
{`\s+`, Text, nil},
{`"`, LiteralString, Push("doublequote")},
{`^\s*module\s*`, KeywordNamespace, Push("imports")},
{`^\s*import\s*`, KeywordNamespace, Push("imports")},
{`\[glsl\|.*`, NameEntity, Push("shader")},
{Words(``, `\b`, `alias`, `as`, `case`, `else`, `if`, `import`, `in`, `let`, `module`, `of`, `port`, `then`, `type`, `where`), KeywordReserved, nil},
{`[A-Z]\w*`, KeywordType, nil},
{`^main `, KeywordReserved, nil},
{Words(`\(`, `\)`, `~`, `||`, `|>`, `|`, "`", `^`, `\`, `'`, `>>`, `>=`, `>`, `==`, `=`, `<~`, `<|`, `<=`, `<<`, `<-`, `<`, `::`, `:`, `/=`, `//`, `/`, `..`, `.`, `->`, `-`, `++`, `+`, `*`, `&&`, `%`), NameFunction, nil},
{Words(``, ``, `~`, `||`, `|>`, `|`, "`", `^`, `\`, `'`, `>>`, `>=`, `>`, `==`, `=`, `<~`, `<|`, `<=`, `<<`, `<-`, `<`, `::`, `:`, `/=`, `//`, `/`, `..`, `.`, `->`, `-`, `++`, `+`, `*`, `&&`, `%`), NameFunction, nil},
Include("numbers"),
{`[a-z_][a-zA-Z_\']*`, NameVariable, nil},
{`[,()\[\]{}]`, Punctuation, nil},
},
"comment": {
{`-(?!\})`, CommentMultiline, nil},
{`\{-`, CommentMultiline, Push("comment")},
{`[^-}]`, CommentMultiline, nil},
{`-\}`, CommentMultiline, Pop(1)},
},
"doublequote": {
{`\\u[0-9a-fA-F]{4}`, LiteralStringEscape, nil},
{`\\[nrfvb\\"]`, LiteralStringEscape, nil},
{`[^"]`, LiteralString, nil},
{`"`, LiteralString, Pop(1)},
},
"imports": {
{`\w+(\.\w+)*`, NameClass, Pop(1)},
},
"numbers": {
{`_?\d+\.(?=\d+)`, LiteralNumberFloat, nil},
{`_?\d+`, LiteralNumberInteger, nil},
},
"shader": {
{`\|(?!\])`, NameEntity, nil},
{`\|\]`, NameEntity, Pop(1)},
{`.*\n`, NameEntity, nil},
},
},
))