1 files changed, 26 insertions, 0 deletions
diff --git a/apps/tile/value-stack.mu b/apps/tile/value-stack.mu
index b7b794c6..8e921eca 100644
--- a/apps/tile/value-stack.mu
+++ b/apps/tile/value-stack.mu
@@ -86,3 +86,29 @@ fn value-stack-length _self: (addr value-stack) -> result/eax: int {
   var top-addr/eax: (addr int) <- get self, top
   result <- copy *top-addr
 }
+
+fn value-stack-max-width _self: (addr value-stack) -> result/eax: int {
+  var self/esi: (addr value-stack) <- copy _self
+  var data-ah/edi: (addr handle array value) <- get self, data
+  var _data/eax: (addr array value) <- lookup *data-ah
+  var data/edi: (addr array value) <- copy _data
+  var top-addr/ecx: (addr int) <- get self, top
+  var i/ebx: int <- copy 0
+  var out: int
+  {
+    compare i, *top-addr
+    break-if->=
+    var o/edx: (offset value) <- compute-offset data, i
+    var g/edx: (addr value) <- index data, o
+    var g2/edx: (addr int) <- get g, scalar-data
+    var w/eax: int <- decimal-size *g2
+    compare w, out
+    {
+      break-if-<=
+      copy-to out, w
+    }
+    i <- increment
+    loop
+  }
+  result <- copy out
+}