rework sigsg

lib/wrapper.js

@@ -19,7 +19,7 @@ module.exports = () => {
 
   const bindCWrap = () => {
     const w = wasm.cwrap;
-    c.execute = w('execute', 'void', ['number', 'number', 'number', 'number']);
+    c.execute = w('execute', 'void', ['number', 'number', 'number', 'number', 'number', 'string']);
   };
 
   const start = async() => {
@@ -40,20 +40,24 @@ module.exports = () => {
   }
 
   let boundSet;
+  let boundGet;
 
   // wasm.addFunction can't be called until after
   // start finishes
   bindCallback = () => {
-   boundSet = wasm.addFunction(function(name, len, value) {
+    boundSet = wasm.addFunction(function(name, len, value) {
 
+      let prop = getString(name, len);
 
-    let prop = getString(name, len);
+      console.log(`setting ${prop} to ${value}`);
 
-     console.log(`setting ${prop} to ${value}`);
+      // viii means returns void, accepts int int int
+    }, 'viii');
 
-
-     // vsi means returns void accepts a string and int
-   }, 'viii');
+    boundGet = wasm.addFunction(function(name, len) {
+      let prop = getString(name, len);
+      return 42;
+   }, 'iii');
   };
 
   return {
@@ -63,7 +67,7 @@ module.exports = () => {
       console.log(wasm);
     },
     execute: () => {
-      c.execute(0,0,boundSet,0);
+      c.execute(0,0,0,boundSet,boundGet,"hi");
     },
     onB: (time, cmd) => {
 

wasm_main.cpp

@@ -34,34 +34,50 @@ typedef void externalJsMethodOne(const int sz);
 typedef void externalJsMethodTwo(const char*, const uint64_t time, const uint8_t command, const int dnc0, const int dnc1);
 
 
-typedef int  externalJsGetProperty(const char* name);
+typedef int  externalJsGetProperty(const char* name, const size_t len);
 typedef void externalJsSetProperty(const char* name, const size_t len, const int value);
 
 
 /// function pointer for c->js
 static externalJsMethodOne* externalOne = 0;
 static externalJsMethodTwo* externalTwo = 0;
-static externalJsSetProperty* set_property = 0;
-static externalJsGetProperty* get_property = 0;
+static externalJsSetProperty* bound_set_property = 0;
+static externalJsGetProperty* bound_get_property = 0;
+
+static void set_property(const char* name, const int value) {
+  bound_set_property(name, strlen(name), value);
+}
+
+static int get_property(const char* name) {
+  return bound_get_property(name, strlen(name));
+}
 
 
 
 extern "C" {
 
 void execute(
+  const int context,
   externalJsMethodOne* f1,
   externalJsMethodTwo* f2,
   externalJsSetProperty* sfn,
-  externalJsGetProperty* gfn
+  externalJsGetProperty* gfn,
+  char* chunk
   ) {
 
   // cout << "execute got " << p << "\n";
-  cout << "execute " << (int)sfn << "\n";
-  set_property = sfn;
+  cout << "execute " << (int)sfn << " and got " << chunk << "\n";
+  bound_set_property = sfn;
+  bound_get_property = gfn;
 
-  set_property("foo", strlen("foo"), 4);
 
 
+  int got = get_property("bar");
+
+  cout << "got " << got << " for bar\n";
+
+
+
 }
 
 } // extern C