webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 150 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wasm/js/WebAssemblyTableConstructor.cpp b/Source/JavaScriptCore/wasm/js/WebAssemblyTableConstructor.cpp
new file mode 100644
index 000000000..12d27ab7c
--- /dev/null
+++ b/Source/JavaScriptCore/wasm/js/WebAssemblyTableConstructor.cpp
@@ -0,0 +1,150 @@
+/*
+ * 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 "WebAssemblyTableConstructor.h"
+
+#if ENABLE(WEBASSEMBLY)
+
+#include "FunctionPrototype.h"
+#include "JSCInlines.h"
+#include "JSWebAssemblyHelpers.h"
+#include "JSWebAssemblyTable.h"
+#include "WebAssemblyTablePrototype.h"
+
+#include "WebAssemblyTableConstructor.lut.h"
+
+namespace JSC {
+
+const ClassInfo WebAssemblyTableConstructor::s_info = { "Function", &Base::s_info, &constructorTableWebAssemblyTable, CREATE_METHOD_TABLE(WebAssemblyTableConstructor) };
+
+/* Source for WebAssemblyTableConstructor.lut.h
+ @begin constructorTableWebAssemblyTable
+ @end
+ */
+
+static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyTable(ExecState* exec)
+{
+    VM& vm = exec->vm();
+    auto throwScope = DECLARE_THROW_SCOPE(vm);
+
+    JSObject* memoryDescriptor;
+    {
+        JSValue argument = exec->argument(0);
+        if (!argument.isObject())
+            return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its first argument to be an object"))));
+        memoryDescriptor = jsCast<JSObject*>(argument);
+    }
+
+    {
+        Identifier elementIdent = Identifier::fromString(&vm, "element");
+        JSValue elementValue = memoryDescriptor->get(exec, elementIdent);
+        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+        String elementString = elementValue.toWTFString(exec);
+        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+        if (elementString != "anyfunc")
+            return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its 'element' field to be the string 'anyfunc'"))));
+    }
+
+    Identifier initialIdent = Identifier::fromString(&vm, "initial");
+    JSValue initialSizeValue = memoryDescriptor->get(exec, initialIdent);
+    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+    uint32_t initial = toNonWrappingUint32(exec, initialSizeValue);
+    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+
+    std::optional<uint32_t> maximum;
+    Identifier maximumIdent = Identifier::fromString(&vm, "maximum");
+    bool hasProperty = memoryDescriptor->hasProperty(exec, maximumIdent);
+    RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+    if (hasProperty) {
+        JSValue maxSizeValue = memoryDescriptor->get(exec, maximumIdent);
+        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+        maximum = toNonWrappingUint32(exec, maxSizeValue);
+        RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
+
+        if (initial > *maximum) {
+            return JSValue::encode(throwException(exec, throwScope,
+                createRangeError(exec, ASCIILiteral("'maximum' property must be greater than or equal to the 'initial' property"))));
+        }
+    }
+
+    throwScope.release();
+    return JSValue::encode(JSWebAssemblyTable::create(exec, vm, exec->lexicalGlobalObject()->WebAssemblyTableStructure(), initial, maximum));
+}
+
+static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyTable(ExecState* state)
+{
+    VM& vm = state->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+    return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(state, scope, "WebAssembly.Table"));
+}
+
+WebAssemblyTableConstructor* WebAssemblyTableConstructor::create(VM& vm, Structure* structure, WebAssemblyTablePrototype* thisPrototype)
+{
+    auto* constructor = new (NotNull, allocateCell<WebAssemblyTableConstructor>(vm.heap)) WebAssemblyTableConstructor(vm, structure);
+    constructor->finishCreation(vm, thisPrototype);
+    return constructor;
+}
+
+Structure* WebAssemblyTableConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+{
+    return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
+}
+
+void WebAssemblyTableConstructor::finishCreation(VM& vm, WebAssemblyTablePrototype* prototype)
+{
+    Base::finishCreation(vm, ASCIILiteral("Table"));
+    putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, DontEnum | DontDelete | ReadOnly);
+    putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
+}
+
+WebAssemblyTableConstructor::WebAssemblyTableConstructor(VM& vm, Structure* structure)
+    : Base(vm, structure)
+{
+}
+
+ConstructType WebAssemblyTableConstructor::getConstructData(JSCell*, ConstructData& constructData)
+{
+    constructData.native.function = constructJSWebAssemblyTable;
+    return ConstructType::Host;
+}
+
+CallType WebAssemblyTableConstructor::getCallData(JSCell*, CallData& callData)
+{
+    callData.native.function = callJSWebAssemblyTable;
+    return CallType::Host;
+}
+
+void WebAssemblyTableConstructor::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{
+    auto* thisObject = jsCast<WebAssemblyTableConstructor*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
+    Base::visitChildren(thisObject, visitor);
+}
+
+} // namespace JSC
+
+#endif // ENABLE(WEBASSEMBLY)
+