webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 85 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wasm/WasmSections.h b/Source/JavaScriptCore/wasm/WasmSections.h
new file mode 100644
index 000000000..5ee7bccb5
--- /dev/null
+++ b/Source/JavaScriptCore/wasm/WasmSections.h
@@ -0,0 +1,85 @@
+/*
+ * 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
+
+#if ENABLE(WEBASSEMBLY)
+
+namespace JSC { namespace Wasm {
+
+#define FOR_EACH_WASM_SECTION(macro) \
+    macro(Type,     1, "Function signature declarations") \
+    macro(Import,   2, "Import declarations") \
+    macro(Function, 3, "Function declarations") \
+    macro(Table,    4, "Indirect function table and other tables") \
+    macro(Memory,   5, "Memory attributes") \
+    macro(Global,   6, "Global declarations") \
+    macro(Export,   7, "Exports") \
+    macro(Start,    8, "Start function declaration") \
+    macro(Element,  9, "Elements section") \
+    macro(Code,    10, "Function bodies (code)") \
+    macro(Data,    11, "Data segments")
+
+enum class Section : uint8_t {
+#define DEFINE_WASM_SECTION_ENUM(NAME, ID, DESCRIPTION) NAME = ID,
+    FOR_EACH_WASM_SECTION(DEFINE_WASM_SECTION_ENUM)
+#undef DEFINE_WASM_SECTION_ENUM
+    Unknown
+};
+
+template<typename Int>
+static inline bool isValidSection(Int section)
+{
+    switch (section) {
+#define VALIDATE_SECTION(NAME, ID, DESCRIPTION) case static_cast<Int>(Section::NAME): return true;
+        FOR_EACH_WASM_SECTION(VALIDATE_SECTION)
+#undef VALIDATE_SECTION
+    default:
+        return false;
+    }
+}
+
+static inline bool validateOrder(Section previous, Section next)
+{
+    if (previous == Section::Unknown)
+        return true;
+    return static_cast<uint8_t>(previous) < static_cast<uint8_t>(next);
+}
+
+static inline const char* makeString(Section section)
+{
+    switch (section) {
+#define STRINGIFY_SECTION_NAME(NAME, ID, DESCRIPTION) case Section::NAME: return #NAME;
+        FOR_EACH_WASM_SECTION(STRINGIFY_SECTION_NAME)
+#undef STRINGIFY_SECTION_NAME
+    default:
+        RELEASE_ASSERT_NOT_REACHED();
+        return "?";
+    }
+}
+
+} } // namespace JSC::Wasm
+
+#endif // ENABLE(WEBASSEMBLY)