From 882ba15c02235085d424e4e86a5080711a132b7d Mon Sep 17 00:00:00 2001
From: brettlangdon <brett@blangdon.com>
Date: Mon, 14 Sep 2015 11:42:05 -0400
Subject: [PATCH] add skeleton for async/await

---
 scanner/scanner.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/scanner/scanner.go b/scanner/scanner.go
index 1e2f74d..fa525a0 100644
--- a/scanner/scanner.go
+++ b/scanner/scanner.go
@@ -19,6 +19,8 @@ type Scanner struct {
 
 	currentLine   int
 	currentColumn int
+
+	asyncDef bool
 }
 
 func NewScanner(r io.Reader) *Scanner {
@@ -163,6 +165,26 @@ func (scanner *Scanner) NextToken() *token.Token {
 			pos = scanner.nextPosition()
 		}
 		scanner.unreadPosition(pos)
+
+		// Check for async/await
+		// literal := positions.String()
+		// if literal == "async" || literal == "await" {
+		// 	if scanner.asyncDef {
+		// 		switch literal {
+		// 		case "async":
+		// 			return positions.AsToken(token.ASYNC)
+		// 		case "await":
+		// 			return positions.AsToken(token.AWAIT)
+		// 		}
+		// 	} else if literal == "async" {
+		// 		nextToken := scanner.NextToken()
+		// 		if nextToken.ID == token.NAME && nextToken.Literal == "def" {
+		// 			scanner.asyncDef = true
+		// 			return positions.AsToken(token.ASYNC)
+		// 		}
+		// 	}
+		// }
+
 		return positions.AsToken(token.NAME)
 	case ch == '\n':
 		return positions.AsToken(token.NEWLINE)