1 files changed, 111 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wasm/JSWebAssembly.cpp b/Source/JavaScriptCore/wasm/JSWebAssembly.cpp
new file mode 100644
index 000000000..5701560ab
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+++ b/Source/JavaScriptCore/wasm/JSWebAssembly.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "JSWebAssembly.h"
+
+#if ENABLE(WEBASSEMBLY)
+
+#include "Exception.h"
+#include "FunctionPrototype.h"
+#include "JSCInlines.h"
+#include "JSPromiseDeferred.h"
+#include "JSWebAssemblyHelpers.h"
+#include "WasmPlan.h"
+#include "WebAssemblyModuleConstructor.h"
+
+namespace JSC {
+
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSWebAssembly);
+
+EncodedJSValue JSC_HOST_CALL webAssemblyValidateFunc(ExecState*);
+EncodedJSValue JSC_HOST_CALL webAssemblyCompileFunc(ExecState*);
+
+EncodedJSValue JSC_HOST_CALL webAssemblyCompileFunc(ExecState* exec)
+{
+    VM& vm = exec->vm();
+    auto catchScope = DECLARE_CATCH_SCOPE(vm);
+
+    JSPromiseDeferred* promise = JSPromiseDeferred::create(exec, exec->lexicalGlobalObject());
+    RETURN_IF_EXCEPTION(catchScope, encodedJSValue());
+
+    // FIXME: Make this truly asynchronous:
+    // https://bugs.webkit.org/show_bug.cgi?id=166016
+    JSValue module = WebAssemblyModuleConstructor::createModule(exec, exec->lexicalGlobalObject()->WebAssemblyModuleStructure());
+    if (Exception* exception = catchScope.exception()) {
+        catchScope.clearException();
+        promise->reject(exec, exception->value());
+        return JSValue::encode(promise->promise());
+    }
+
+    promise->resolve(exec, module);
+    return JSValue::encode(promise->promise());
+}
+
+EncodedJSValue JSC_HOST_CALL webAssemblyValidateFunc(ExecState* exec)
+{
+    VM& vm = exec->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+
+    size_t byteOffset;
+    size_t byteSize;
+    uint8_t* base = getWasmBufferFromValue(exec, exec->argument(0), byteOffset, byteSize);
+    RETURN_IF_EXCEPTION(scope, encodedJSValue());
+    Wasm::Plan plan(&vm, base + byteOffset, byteSize);
+    // FIXME: We might want to throw an OOM exception here if we detect that something will OOM.
+    // https://bugs.webkit.org/show_bug.cgi?id=166015
+    return JSValue::encode(jsBoolean(plan.parseAndValidateModule()));
+}
+
+const ClassInfo JSWebAssembly::s_info = { "WebAssembly", &Base::s_info, 0, CREATE_METHOD_TABLE(JSWebAssembly) };
+
+JSWebAssembly* JSWebAssembly::create(VM& vm, JSGlobalObject* globalObject, Structure* structure)
+{
+    auto* object = new (NotNull, allocateCell<JSWebAssembly>(vm.heap)) JSWebAssembly(vm, structure);
+    object->finishCreation(vm, globalObject);
+    return object;
+}
+
+Structure* JSWebAssembly::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+{
+    return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
+}
+
+void JSWebAssembly::finishCreation(VM& vm, JSGlobalObject* globalObject)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(vm, info()));
+    JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION("validate", webAssemblyValidateFunc, DontEnum, 1);
+    JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION("compile", webAssemblyCompileFunc, DontEnum, 1);
+}
+
+JSWebAssembly::JSWebAssembly(VM& vm, Structure* structure)
+    : JSNonFinalObject(vm, structure)
+{
+}
+
+} // namespace JSC
+
+#endif // ENABLE(WEBASSEMBLY)