Add BinaryenModuleWriteSExpr to write a module to a string in s-expr format (#2106)

Fixes #2103.

1 files changed, 13 insertions, 0 deletions

diff --git a/test/example/c-api-kitchen-sink.c b/test/example/c-api-kitchen-sink.c
index 0efafde52..43069c865 100644
--- a/test/example/c-api-kitchen-sink.c
+++ b/test/example/c-api-kitchen-sink.c
@@ -785,6 +785,19 @@ void test_binaries() {
   assert(BinaryenModuleValidate(module));
   printf("module loaded from binary form:\n");
   BinaryenModulePrint(module);
+
+  // write the s-expr representation of the module.
+  BinaryenModuleWriteText(module, buffer, 1024);
+  printf("module s-expr printed (in memory):\n%s\n", buffer);
+
+
+  // writ the s-expr representation to a pointer which is managed by the
+  // caller
+  char *text = BinaryenModuleAllocateAndWriteText(module);
+  printf("module s-expr printed (in memory, caller-owned):\n%s\n", text);
+  free(text);
+
+
   BinaryenModuleDispose(module);
 }