imports.env["abort"] = function() {
console.error("ABORT");
};
+ imports.env["js_log"] = function(argument) {
+ console.log("HI");
+ const res = decodeUint8Array(argument, false);
+ console.log(res);
+ };
imports.env["js_free"] = function(argument) {
console.log('integer passed from wasm:', argument);
};
const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports);
const wasm = wasmInstance.exports;
+
+ const encodeUint8Array = (inputArray) => {
+ const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
+ const arrayLengthView = new Uint32Array(memory.buffer, cArrayPointer, 1);
+ arrayLengthView[0] = inputArray.length;
+ const arrayMemoryView = new Uint8Array(memory.buffer, cArrayPointer + 4, inputArray.length);
+ arrayMemoryView.set(inputArray);
+ return cArrayPointer;
+ }
+
+ const encodeUint32Array = (inputArray) => {
+ const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
+ const arrayMemoryView = new Uint32Array(memory.buffer, cArrayPointer, inputArray.length);
+ arrayMemoryView[0] = inputArray.length;
+ arrayMemoryView.set(inputArray, 1);
+ return cArrayPointer;
+ }
+
+ const getArrayLength = (arrayPointer) => {
+ const arraySizeViewer = new Uint32Array(
+ memory.buffer, // value
+ arrayPointer, // offset
+ 1 // one int
+ );
+ return arraySizeViewer[0];
+ }
+ const decodeUint8Array = (arrayPointer, free = true) => {
+ const arraySize = getArrayLength(arrayPointer);
+ const actualArrayViewer = new Uint8Array(
+ memory.buffer, // value
+ arrayPointer + 4, // offset (ignoring length bytes)
+ arraySize // uint8 count
+ );
+ // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
+ // will free the underlying memory when it becomes unreachable instead of copying here.
+ const actualArray = actualArrayViewer.slice(0, arraySize);
+ if (free) {
+ wasm.TS_free(arrayPointer);
+ }
+ return actualArray;
+ }
+
const result = wasm.TS_CResult_boolLightningErrorZ_ok(true);
console.assert(wasm.TS_LDKCResult_boolLightningErrorZ_result_ok(result));
console.assert(wasm.TS_LDKCResult_boolLightningErrorZ_get_ok(result));
console.assert(wasm.TS_LDKCResult_boolLightningErrorZ_result_ok(result));
console.assert(!wasm.TS_LDKCResult_boolLightningErrorZ_get_ok(result));
wasm.TS_CResult_boolLightningErrorZ_free(result);
+
+ var pk_arr = [];
+ for (var i = 0; i < 33; i++) { pk_arr[i] = 42; }
+ const pk_bytes = encodeUint8Array(pk_arr);
+ const pk_res = wasm.TS_CResult_PublicKeySecpErrorZ_ok(pk_bytes);
+ console.assert(wasm.TS_LDKCResult_PublicKeySecpErrorZ_result_ok(pk_res));
+ const pk_res_bytes = wasm.TS_LDKCResult_PublicKeySecpErrorZ_get_ok(pk_res);
+ wasm.TS_LDKCResult_PublicKeySecpErrorZ_free(pk_res);
+
console.log("pass");
})();
</script>