9 files changed, 82 insertions, 0 deletions
diff --git a/tmp/add.c b/tmp/add.c
new file mode 100644
index 0000000..99267ed
--- /dev/null
+++ b/tmp/add.c
@@ -0,0 +1,13 @@
+#include "api.h"
+
+int add(int a, int b) {
+  return a * a + b;
+}
+
+void persistInt(int n) {
+  platformDependentPersistInt(n);
+}
+
+int retrieveInt() {
+  return platformDependentRetrieveInt();
+}
diff --git a/tmp/add.h b/tmp/add.h
new file mode 100644
index 0000000..54c0712
--- /dev/null
+++ b/tmp/add.h
@@ -0,0 +1,3 @@
+int add(int a, int b);
+void persistInt(int n);
+int retrieveInt();
diff --git a/tmp/api-posix.c b/tmp/api-posix.c
new file mode 100644
index 0000000..9f51967
--- /dev/null
+++ b/tmp/api-posix.c
@@ -0,0 +1,15 @@
+/* POSIX implementation of "api.h" interface to be used in non-web contexts */
+
+#include <stdio.h>
+
+void platformDependentPersistInt(int n) {
+  FILE* fp = fopen("/tmp/persisted.txt", "w+");
+  fprintf(fp, "%d", n);
+  fclose(fp);
+}
+
+int platformDependentRetrieveInt() {
+  FILE* fp = fopen("/tmp/persisted.txt", "r");
+  int persisted = fgetc(fp);
+  return persisted;
+}
diff --git a/tmp/api-wasm.js b/tmp/api-wasm.js
new file mode 100644
index 0000000..50e1392
--- /dev/null
+++ b/tmp/api-wasm.js
@@ -0,0 +1,7 @@
+/* WASM implementation of "api.h" interface to be used in web contexts */
+
+export const platformDependentPersistInt = (n) =>
+  localStorage.setItem("persisted", n.toString());
+
+export const platformDependentRetrieveInt = () =>
+  parseInt(localStorage.getItem("persisted"));
diff --git a/tmp/api.h b/tmp/api.h
new file mode 100644
index 0000000..9b8d27d
--- /dev/null
+++ b/tmp/api.h
@@ -0,0 +1,2 @@
+extern void platformDependentPersistInt(int);
+extern int platformDependentRetrieveInt();
diff --git a/tmp/index.html b/tmp/index.html
new file mode 100644
index 0000000..b222149
--- /dev/null
+++ b/tmp/index.html
@@ -0,0 +1,14 @@
+<script type="module">
+ import * as api from "./api-wasm.js";
+
+ WebAssembly
+   .instantiateStreaming(fetch("add.wasm"), { env: api })
+   .then(({instance: {exports}}) => {
+     const added = exports.add(4, 5);
+     console.log("Adding 4 and 5:", added);
+
+     exports.persistInt(6);
+     const persisted = exports.retrieveInt();
+     console.log("Persisted number:", persisted);
+   });
+</script>
diff --git a/tmp/main.c b/tmp/main.c
new file mode 100644
index 0000000..0ae18f7
--- /dev/null
+++ b/tmp/main.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include "add.h"
+
+int main() {
+  int added = add(4, 5);
+  printf("Adding 4 and 5: %d\n", added);
+
+  persistInt(6);
+  int persisted = retrieveInt();
+  printf("Persisted number: %c\n", persisted);
+  return 0;
+}
diff --git a/tmp/main.js b/tmp/main.js
new file mode 100644
index 0000000..3c105b2
--- /dev/null
+++ b/tmp/main.js
@@ -0,0 +1 @@
+import * as wasm from './'
diff --git a/tmp/server.py b/tmp/server.py
new file mode 100755
index 0000000..a76c833
--- /dev/null
+++ b/tmp/server.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import SimpleHTTPServer
+import SocketServer
+
+PORT = 8001
+
+class Handler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+    pass
+
+Handler.extensions_map['.wasm'] = 'application/wasm'
+
+httpd = SocketServer.TCPServer(("", PORT), Handler)
+
+print "serving at port", PORT
+httpd.serve_forever()