Merge pull request #49 from FooSoft/toml-lexer

Add lexer for TOML

lexers/toml.go

@@ -0,0 +1,28 @@
+package lexers
+
+import (
+	. "github.com/alecthomas/chroma" // nolint
+)
+
+var TOML = Register(MustNewLexer(
+	&Config{
+		Name:      "TOML",
+		Aliases:   []string{"toml"},
+		Filenames: []string{"*.toml"},
+		MimeTypes: []string{"text/x-toml"},
+	},
+	Rules{
+		"root": {
+			{`\s+`, Text, nil},
+			{`#.*`, Comment, nil},
+			{Words(``, `\b`, `true`, `false`), KeywordConstant, nil},
+			{`\d\d\d\d-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d\+)?(Z|[+-]\d{2}:\d{2})`, LiteralDate, nil},
+			{`[+-]?[0-9](_?\d)*\.\d+`, LiteralNumberFloat, nil},
+			{`[+-]?[0-9](_?\d)*`, LiteralNumberInteger, nil},
+			{`"(\\\\|\\"|[^"])*"`, StringDouble, nil},
+			{`'(\\\\|\\'|[^'])*'`, StringSingle, nil},
+			{`[.,=\[\]]`, Punctuation, nil},
+			{`[^\W\d]\w*`, NameOther, nil},
+		},
+	},
+))