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package t
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Tex lexer.
var TeX = internal.Register(MustNewLazyLexer(
&Config{
Name: "TeX",
Aliases: []string{"tex", "latex"},
Filenames: []string{"*.tex", "*.aux", "*.toc"},
MimeTypes: []string{"text/x-tex", "text/x-latex"},
},
texRules,
))
func texRules() Rules {
return Rules{
"general": {
{`%.*?\n`, Comment, nil},
{`[{}]`, NameBuiltin, nil},
{`[&_^]`, NameBuiltin, nil},
},
"root": {
{`\\\[`, LiteralStringBacktick, Push("displaymath")},
{`\\\(`, LiteralString, Push("inlinemath")},
{`\$\$`, LiteralStringBacktick, Push("displaymath")},
{`\$`, LiteralString, Push("inlinemath")},
{`\\([a-zA-Z]+|.)`, Keyword, Push("command")},
{`\\$`, Keyword, nil},
Include("general"),
{`[^\\$%&_^{}]+`, Text, nil},
},
"math": {
{`\\([a-zA-Z]+|.)`, NameVariable, nil},
Include("general"),
{`[0-9]+`, LiteralNumber, nil},
{`[-=!+*/()\[\]]`, Operator, nil},
{`[^=!+*/()\[\]\\$%&_^{}0-9-]+`, NameBuiltin, nil},
},
"inlinemath": {
{`\\\)`, LiteralString, Pop(1)},
{`\$`, LiteralString, Pop(1)},
Include("math"),
},
"displaymath": {
{`\\\]`, LiteralString, Pop(1)},
{`\$\$`, LiteralString, Pop(1)},
{`\$`, NameBuiltin, nil},
Include("math"),
},
"command": {
{`\[.*?\]`, NameAttribute, nil},
{`\*`, Keyword, nil},
Default(Pop(1)),
},
}
}
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