forgejo/vendor/github.com/alecthomas/chroma/lexers/l/lua.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

75 lines
2.3 KiB
Go
Vendored

package l
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Lua lexer.
var Lua = internal.Register(MustNewLexer(
&Config{
Name: "Lua",
Aliases: []string{"lua"},
Filenames: []string{"*.lua", "*.wlua"},
MimeTypes: []string{"text/x-lua", "application/x-lua"},
},
Rules{
"root": {
{`#!.*`, CommentPreproc, nil},
Default(Push("base")),
},
"ws": {
{`(?:--\[(=*)\[[\w\W]*?\](\1)\])`, CommentMultiline, nil},
{`(?:--.*$)`, CommentSingle, nil},
{`(?:\s+)`, Text, nil},
},
"base": {
Include("ws"),
{`(?i)0x[\da-f]*(\.[\da-f]*)?(p[+-]?\d+)?`, LiteralNumberHex, nil},
{`(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?`, LiteralNumberFloat, nil},
{`(?i)\d+e[+-]?\d+`, LiteralNumberFloat, nil},
{`\d+`, LiteralNumberInteger, nil},
{`(?s)\[(=*)\[.*?\]\1\]`, LiteralString, nil},
{`::`, Punctuation, Push("label")},
{`\.{3}`, Punctuation, nil},
{`[=<>|~&+\-*/%#^]+|\.\.`, Operator, nil},
{`[\[\]{}().,:;]`, Punctuation, nil},
{`(and|or|not)\b`, OperatorWord, nil},
{`(break|do|else|elseif|end|for|if|in|repeat|return|then|until|while)\b`, KeywordReserved, nil},
{`goto\b`, KeywordReserved, Push("goto")},
{`(local)\b`, KeywordDeclaration, nil},
{`(true|false|nil)\b`, KeywordConstant, nil},
{`(function)\b`, KeywordReserved, Push("funcname")},
{`[A-Za-z_]\w*(\.[A-Za-z_]\w*)?`, Name, nil},
{`'`, LiteralStringSingle, Combined("stringescape", "sqs")},
{`"`, LiteralStringDouble, Combined("stringescape", "dqs")},
},
"funcname": {
Include("ws"),
{`[.:]`, Punctuation, nil},
{`(?:[^\W\d]\w*)(?=(?:(?:--\[(=*)\[[\w\W]*?\](\2)\])|(?:--.*$)|(?:\s+))*[.:])`, NameClass, nil},
{`(?:[^\W\d]\w*)`, NameFunction, Pop(1)},
{`\(`, Punctuation, Pop(1)},
},
"goto": {
Include("ws"),
{`(?:[^\W\d]\w*)`, NameLabel, Pop(1)},
},
"label": {
Include("ws"),
{`::`, Punctuation, Pop(1)},
{`(?:[^\W\d]\w*)`, NameLabel, nil},
},
"stringescape": {
{`\\([abfnrtv\\"\']|[\r\n]{1,2}|z\s*|x[0-9a-fA-F]{2}|\d{1,3}|u\{[0-9a-fA-F]+\})`, LiteralStringEscape, nil},
},
"sqs": {
{`'`, LiteralStringSingle, Pop(1)},
{`[^\\']+`, LiteralStringSingle, nil},
},
"dqs": {
{`"`, LiteralStringDouble, Pop(1)},
{`[^\\"]+`, LiteralStringDouble, nil},
},
},
))