Bug 20753 – JSValueToStringCopy is DLL exported in WebKit.dll on Windows, but you can't get at its data

• Component: Platform
• Status: RESOLVED WORKSFORME

[Matt]

WebKit.dll exposes a bunch of methods via DLL exports on Windows.  One such method is defined as follows:

JSStringRef JSValueToStringCopy(
    JSContextRef ctx,
    JSValueRef value,
    JSValueRef *exception);

Unfortunately, there's no way to get data out of this type without compiling against WebKit's headers to pickup the definition for JSStringRef.  This differs from the following exported methods, which actually return a "native" type that one can use without requiring you to compile against WebKit:

bool JSValueToBoolean(
    JSContextRef ctx,
    JSValueRef value);

double JSValueToNumber(
    JSContextRef ctx,
    JSValueRef value,
    JSValueRef *exception);

It would be really nice if a similar method existed to actually get the string data out of the JSStringRef type:

wchar_t* JSStringRefToCharsCopy(JSStringRef str);

[Mark Rowe (bdash)]

> It would be really nice if a similar method existed to actually get the string
> data out of the JSStringRef type:

Such as JSStringCopyBSTR (<http://trac.webkit.org/browser/trunk/JavaScriptCore/API/JSStringRefBSTR.h>) or JSStringGetCharactersPtr (<http://trac.webkit.org/browser/trunk/JavaScriptCore/API/JSStringRef.h#L95>)?

[Matt]

Sorry -- copy/paste mistake on my part when viewing the DLL exports. These functions do indeed already exist.  Thanks guys!