Initial commit! Working!

lexers/go.go

@@ -0,0 +1,67 @@
+package lexers
+
+import (
+	. "github.com/alecthomas/chroma" // nolint: golint
+)
+
+// Go lexer.
+var Go = Register(NewLexer(
+	&Config{
+		Name:      "Go",
+		Filenames: []string{"*.go"},
+		Aliases:   []string{"go", "golang"},
+		MimeTypes: []string{"text/x-gosrc"},
+	},
+	Rules{
+		`root`: []Rule{
+			{`\n`, Text, nil},
+			{`\s+`, Text, nil},
+			{`\\\n`, Text, nil}, // line continuations
+			{`//(.*?)\n`, CommentSingle, nil},
+			{`/(\\\n)?[*](.|\n)*?[*](\\\n)?/`, CommentMultiline, nil},
+			{`(import|package)\b`, KeywordNamespace, nil},
+			{`(var|func|struct|map|chan|type|interface|const)\b`,
+				KeywordDeclaration, nil},
+			{Words(`break`, `default`, `select`, `case`, `defer`, `go`,
+				`else`, `goto`, `switch`, `fallthrough`, `if`, `range`,
+				`continue`, `for`, `return`), Keyword, nil},
+			{`(true|false|iota|nil)\b`, KeywordConstant, nil},
+			{Words(`uint`, `uint8`, `uint16`, `uint32`, `uint64`,
+				`int`, `int8`, `int16`, `int32`, `int64`,
+				`float`, `float32`, `float64`,
+				`complex64`, `complex128`, `byte`, `rune`,
+				`string`, `bool`, `erro`, `uintpt`,
+				`print`, `println`, `panic`, `recove`, `close`, `complex`,
+				`real`, `imag`, `len`, `cap`, `append`, `copy`, `delete`,
+				`new`, `make`),
+				KeywordType, nil},
+			// imaginary_lit
+			{`\d+i`, LiteralNumber, nil},
+			{`\d+\.\d*([Ee][-+]\d+)?i`, LiteralNumber, nil},
+			{`\.\d+([Ee][-+]\d+)?i`, LiteralNumber, nil},
+			{`\d+[Ee][-+]\d+i`, LiteralNumber, nil},
+			// float_lit
+			{`\d+(\.\d+[eE][+\-]?\d+|\.\d*|[eE][+\-]?\d+)`, LiteralNumberFloat, nil},
+			{`\.\d+([eE][+\-]?\d+)?`, LiteralNumberFloat, nil},
+			// int_lit
+			// -- octal_lit
+			{`0[0-7]+`, LiteralNumberOct, nil},
+			// -- hex_lit
+			{`0[xX][0-9a-fA-F]+`, LiteralNumberHex, nil},
+			// -- decimal_lit
+			{`(0|[1-9][0-9]*)`, LiteralNumberInteger, nil},
+			// char_lit
+			{`'(\\['"\\abfnrtv]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|[^\\])'`, LiteralStringChar, nil},
+			// StringLiteral
+			// -- raw_string_lit
+			{"`[^`]*`", String, nil},
+			// -- interpreted_string_lit
+			{`"(\\\\|\\"|[^"])*"`, String, nil},
+			// Tokens
+			{`(<<=|>>=|<<|>>|<=|>=|&\^=|&\^|\+=|-=|\*=|/=|%=|&=|\|=|&&|\|\||<-|\+\+|--|==|!=|:=|\.\.\.|[+\-*/%&])`, Operator, nil},
+			{`[|^<>=!()\[\]{}.,;:]`, Punctuation, nil},
+			// identifier
+			{`[^\W\d]\w*`, NameOther, nil},
+		},
+	},
+))