From ef686a4d932b9b86edc34a3b9b15926f943f6f7b Mon Sep 17 00:00:00 2001
From: Max Graey <maxgraey@gmail.com>
Date: Sat, 9 Oct 2021 05:26:08 +0300
Subject: Add table.size operation (#4224)

---
 src/js/binaryen.js-post.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/js')

diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index 8fbd2b7ec..29729c4b1 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -93,6 +93,7 @@ function initializeConstants() {
     'RefEq',
     'TableGet',
     'TableSet',
+    'TableSize',
     'Try',
     'Throw',
     'Rethrow',
@@ -671,6 +672,9 @@ function wrapModule(module, self = {}) {
     },
     'set'(name, index, value) {
       return Module['_BinaryenTableSet'](module, strToStack(name), index, value);
+    },
+    'size'(name) {
+      return Module['_BinaryenTableSize'](module, strToStack(name));
     }
   }
 
@@ -2825,6 +2829,12 @@ Module['getExpressionInfo'] = function(expr) {
         'index': Module['_BinaryenTableSetGetIndex'](expr),
         'value': Module['_BinaryenTableSetGetValue'](expr)
       };
+    case Module['TableSizeId']:
+      return {
+        'id': id,
+        'type': type,
+        'table': UTF8ToString(Module['_BinaryenTableSizeGetTable'](expr)),
+      };
     case Module['LoadId']:
       return {
         'id': id,
@@ -3831,6 +3841,15 @@ Module['TableSet'] = makeExpressionWrapper({
   }
 });
 
+Module['TableSize'] = makeExpressionWrapper({
+  'getTable'(expr) {
+    return UTF8ToString(Module['_BinaryenTableSizeGetTable'](expr));
+  },
+  'setTable'(expr, name) {
+    preserveStack(() => { Module['_BinaryenTableSizeSetTable'](expr, strToStack(name)) });
+  },
+});
+
 Module['MemorySize'] = makeExpressionWrapper({});
 
 Module['MemoryGrow'] = makeExpressionWrapper({
-- 
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