fix: improve parsing of assign statements

Handle assign statements in parseAssign function. Detect multi-assign
by the presence of comma in the right hand side tokens.
The case of swap is not handled yet.

1 files changed, 3 insertions, 2 deletions

diff --git a/interp/interpreter_test.go b/interp/interpreter_test.go
index adb550b..27b7dd8 100644
--- a/interp/interpreter_test.go
+++ b/interp/interpreter_test.go
@@ -72,8 +72,9 @@ func TestExpr(t *testing.T) {
 
 func TestAssign(t *testing.T) {
 	run(t, []etest{
-		{src: "var a int = 1; a", res: "1"},       // #00
-		{src: "var a, b int = 1, 2; b", res: "2"}, // #01
+		{src: "var a int = 1; a", res: "1"},             // #00
+		{src: "var a, b int = 1, 2; b", res: "2"},       // #01
+		{src: "var a, b int; a, b = 1, 2; b", res: "2"}, // #02
 	})
 }