From 0101ea73199452d0dfdb2930fd49211e6eff28d4 Mon Sep 17 00:00:00 2001
From: Pelle Johnsen <pelle.johnsen@gmail.com>
Date: Mon, 2 Nov 2020 07:48:04 +0000
Subject: [PATCH] [glsl-in] Handle assign ops: +=, *=, etc

---
 src/front/glsl/parser.rs | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/front/glsl/parser.rs b/src/front/glsl/parser.rs
index 2914c5de5a..b32b711f0d 100644
--- a/src/front/glsl/parser.rs
+++ b/src/front/glsl/parser.rs
@@ -435,17 +435,29 @@ pomelo! {
 
     assignment_expression ::= conditional_expression;
     assignment_expression ::= unary_expression(mut pointer) assignment_operator(op) assignment_expression(value) {
+        pointer.statements.extend(value.statements);
         match op {
             BinaryOperator::Equal => {
-                pointer.statements.extend(value.statements);
                 pointer.statements.push(Statement::Store{
                     pointer: pointer.expression,
                     value: value.expression
                 });
                 pointer
             },
-            //TODO: op != Equal
-            _ => {return Err(ErrorKind::NotImplemented("assign op"))}
+            _ => {
+                let h = extra.context.expressions.append(
+                    Expression::Binary{
+                        op,
+                        left: pointer.expression,
+                        right: value.expression,
+                    }
+                );
+                pointer.statements.push(Statement::Store{
+                    pointer: pointer.expression,
+                    value: h,
+                });
+                pointer
+            }
         }
     }