Add C and JS API functions for accessing memory info (#4682)

Based on #3573 plus minor fixes

1 files changed, 35 insertions, 0 deletions

diff --git a/test/binaryen.js/memory-info.js b/test/binaryen.js/memory-info.js
new file mode 100644
index 000000000..16ec86753
--- /dev/null
+++ b/test/binaryen.js/memory-info.js
@@ -0,0 +1,35 @@
+var module = new binaryen.Module();
+assert(module.validate());
+console.log(JSON.stringify(module.hasMemory()));
+
+var initial = 1, maximum = 64;
+
+// Not shared
+module = new binaryen.Module();
+module.setMemory(initial, maximum, '');
+assert(module.validate());
+console.log(JSON.stringify(module.hasMemory()));
+console.log(JSON.stringify(module.getMemoryInfo()));
+
+// Shared
+module = new binaryen.Module();
+module.setFeatures(binaryen.Features.MVP | binaryen.Features.Atomics);
+module.setMemory(initial, maximum, '', [], true);
+assert(module.validate());
+console.log(JSON.stringify(module.hasMemory()));
+console.log(JSON.stringify(module.getMemoryInfo()));
+
+// Imported, not shared
+module = new binaryen.Module();
+module.addMemoryImport('my_mem', 'env', 'memory', false);
+assert(module.validate());
+console.log(JSON.stringify(module.hasMemory()));
+console.log(JSON.stringify(module.getMemoryInfo()));
+
+// Imported, shared
+module = new binaryen.Module();
+module.setFeatures(binaryen.Features.MVP | binaryen.Features.Atomics);
+module.addMemoryImport('my_mem', 'env', 'memory', true);
+assert(module.validate());
+console.log(JSON.stringify(module.hasMemory()));
+console.log(JSON.stringify(module.getMemoryInfo()));