From 5a04b5512a128bd1805792cca4eabacf5fd49b27 Mon Sep 17 00:00:00 2001
From: Marc Vertes <mvertes@free.fr>
Date: Sun, 11 Jan 2026 19:02:27 +0100
Subject: fix: handle assign statements on map elements

A new token MapAssign is added to implement assignements involving
a map, slice or array, an index key expression and a value expression.
---
 vm/vm.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'vm/vm.go')

diff --git a/vm/vm.go b/vm/vm.go
index 709b459..2baf384 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -42,6 +42,7 @@ const (
 	Grow                   // -- ; sp += $1
 	Index                  // a i -- a[i] ;
 	IndexSet               // a i v -- a; a[i] = v
+	MapIndex               // a i -- a[i]
 	MapSet                 // a i v -- a; a[i] = v
 	Jump                   // -- ; ip += $1
 	JumpTrue               // cond -- ; if cond { ip += $1 }
@@ -267,6 +268,9 @@ func (m *Machine) Run() (err error) {
 		case IndexSet:
 			mem[sp-3].Value.Index(int(mem[sp-2].Int())).Set(mem[sp-1].Value)
 			mem = mem[:sp-2]
+		case MapIndex:
+			mem[sp-2].Value = mem[sp-2].MapIndex(mem[sp-1].Value)
+			mem = mem[:sp-1]
 		case MapSet:
 			mem[sp-3].SetMapIndex(mem[sp-2].Value, mem[sp-1].Value)
 			mem = mem[:sp-2]
-- 
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