webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 74 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/domjit/DOMJITSignature.h b/Source/JavaScriptCore/domjit/DOMJITSignature.h
new file mode 100644
index 000000000..a37a6fd9a
--- /dev/null
+++ b/Source/JavaScriptCore/domjit/DOMJITSignature.h
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include "ClassInfo.h"
+#include "DOMJITEffect.h"
+#include "SpeculatedType.h"
+
+namespace JSC { namespace DOMJIT {
+
+// FIXME: Currently, we only support functions which arguments are up to 2.
+// Eventually, we should extend this. But possibly, 2 or 3 can cover typical use cases.
+// https://bugs.webkit.org/show_bug.cgi?id=164346
+#define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS 2
+#define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS_INCLUDING_THIS (1 + JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS)
+
+class Patchpoint;
+
+typedef Ref<Patchpoint> CheckDOMGeneratorFunction(void);
+
+class Signature {
+public:
+    template<typename... Arguments>
+    constexpr Signature(uintptr_t unsafeFunction, CheckDOMGeneratorFunction* checkDOMGeneratorFunction, const ClassInfo* classInfo, Effect effect, SpeculatedType result, Arguments... arguments)
+        : unsafeFunction(unsafeFunction)
+        , checkDOMGeneratorFunction(checkDOMGeneratorFunction)
+        , classInfo(classInfo)
+        , effect(effect)
+        , result(result)
+        , arguments {static_cast<SpeculatedType>(arguments)...}
+        , argumentCount(sizeof...(Arguments))
+    {
+    }
+
+#if ENABLE(JIT)
+    Ref<Patchpoint> checkDOM() const
+    {
+        return checkDOMGeneratorFunction();
+    }
+#endif
+
+    uintptr_t unsafeFunction;
+    CheckDOMGeneratorFunction* checkDOMGeneratorFunction;
+    const ClassInfo* const classInfo;
+    const Effect effect;
+    const SpeculatedType result;
+    const SpeculatedType arguments[JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS];
+    const unsigned argumentCount;
+};
+
+} }