Hashes

lexer/lexer.go

@@ -98,6 +98,8 @@ func (l *Lexer) NextToken() token.Token {
 		tok = newToken(token.LBRACKET, l.ch)
 	case ']':
 		tok = newToken(token.RBRACKET, l.ch)
+	case ':':
+		tok = newToken(token.COLON, l.ch)
 	default:
 		if isLetter(l.ch) {
 			tok.Literal = l.readIdentifier()

lexer/lexer_test.go

@@ -28,6 +28,7 @@ func TestNextToken(t *testing.T) {
 				"foobar"
 				"foo bar"
 				[1, 2];
+				{"foo": "bar"}
 			`
 
 	tests := []struct {
@@ -126,6 +127,12 @@ func TestNextToken(t *testing.T) {
 		{token.RBRACKET, "]"},
 		{token.SEMICOLON, ";"},
 
+		{token.LBRACE, "{"},
+		{token.STRING, "foo"},
+		{token.COLON, ":"},
+		{token.STRING, "bar"},
+		{token.RBRACE, "}"},
+
 		{token.EOF, ""},
 	}