Changeset 70425 in webkit for trunk/JavaScriptCore/wtf/StdLibExtras.h

Timestamp:

Oct 24, 2010, 4:20:06 PM (15 years ago)

Author:

Patrick Gansterer

Message:

2010-10-24 Patrick Gansterer <Patrick Gansterer>

Reviewed by David Kilzer.

Add WTF_ARRAY_LENGTH macro to WTF
​https://bugs.webkit.org/show_bug.cgi?id=32828

Unify the different implementations and usages.

• interpreter/Interpreter.cpp: (JSC::Interpreter::privateExecute):
• runtime/DatePrototype.cpp: (JSC::formatLocaleDate):
• runtime/JSGlobalObject.cpp: (JSC::JSGlobalObject::reset):
• runtime/JSONObject.cpp: (JSC::Stringifier::appendQuotedString): (JSC::Stringifier::toJSON): (JSC::Stringifier::appendStringifiedValue):
• runtime/UString.cpp: (JSC::UString::number):
• wtf/DateMath.cpp: (WTF::parseDateFromNullTerminatedCharacters):
• wtf/StdLibExtras.h:

File:

• trunk/JavaScriptCore/wtf/StdLibExtras.h (modified) (1 diff)

trunk/JavaScriptCore/wtf/StdLibExtras.h

@@ -111 +111 @@
 }
 
+// Macro that returns a compile time constant with the length of an array, but gives an error if passed a non-array.
+template<typename T, size_t Size> char (&ArrayLengthHelperFunction(T (&)[Size]))[Size];
+#define WTF_ARRAY_LENGTH(array) sizeof(::WTF::ArrayLengthHelperFunction(array))
+
 } // namespace WTF