Add vendor files for go build

vendor/github.com/alecthomas/chroma/lexers/y/yaml.go

@@ -0,0 +1,40 @@
+package y
+
+import (
+	. "github.com/alecthomas/chroma" // nolint
+	"github.com/alecthomas/chroma/lexers/internal"
+)
+
+var YAML = internal.Register(MustNewLexer(
+	&Config{
+		Name:      "YAML",
+		Aliases:   []string{"yaml"},
+		Filenames: []string{"*.yaml", "*.yml"},
+		MimeTypes: []string{"text/x-yaml"},
+	},
+	Rules{
+		"root": {
+			Include("whitespace"),
+			{`#.*`, Comment, nil},
+			{`!![^\s]+`, CommentPreproc, nil},
+			{`&[^\s]+`, CommentPreproc, nil},
+			{`\*[^\s]+`, CommentPreproc, nil},
+			{`^%include\s+[^\n\r]+`, CommentPreproc, nil},
+			{`([>|+-]\s+)(\s+)((?:(?:.*?$)(?:[\n\r]*?)?)*)`, ByGroups(StringDoc, StringDoc, StringDoc), nil},
+			Include("value"),
+			{`[?:,\[\]]`, Punctuation, nil},
+			{`.`, Text, nil},
+		},
+		"value": {
+			{Words(``, `\b`, "true", "false", "null"), KeywordConstant, nil},
+			{`"(?:\\.|[^"])*"`, StringDouble, nil},
+			{`'(?:\\.|[^'])*'`, StringSingle, nil},
+			{`\d\d\d\d-\d\d-\d\d([T ]\d\d:\d\d:\d\d(\.\d+)?(Z|\s+[-+]\d+)?)?`, LiteralDate, nil},
+			{`\b[+\-]?(0x[\da-f]+|0o[0-7]+|(\d+\.?\d*|\.?\d+)(e[\+\-]?\d+)?|\.inf|\.nan)\b`, Number, nil},
+			{`\b[\w]+\b`, Text, nil},
+		},
+		"whitespace": {
+			{`\s+`, Whitespace, nil},
+		},
+	},
+))