dom/base/nsDOMJSUtils.h@6474c204b198 (annotated)
dom/base/nsDOMJSUtils.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef nsDOMJSUtils_h__ |
| michael@0 | 6 | #define nsDOMJSUtils_h__ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "nsIScriptContext.h" |
| michael@0 | 9 | #include "jsapi.h" |
| michael@0 | 10 | |
| michael@0 | 11 | class nsIJSArgArray; |
| michael@0 | 12 | |
| michael@0 | 13 | // seems like overkill for just this 1 function - but let's see what else |
| michael@0 | 14 | // falls out first. |
| michael@0 | 15 | inline nsIScriptContext * |
| michael@0 | 16 | GetScriptContextFromJSContext(JSContext *cx) |
| michael@0 | 17 | { |
| michael@0 | 18 | if (!(JS::ContextOptionsRef(cx).privateIsNSISupports())) { |
| michael@0 | 19 | return nullptr; |
| michael@0 | 20 | } |
| michael@0 | 21 | |
| michael@0 | 22 | nsCOMPtr<nsIScriptContext> scx = |
| michael@0 | 23 | do_QueryInterface(static_cast<nsISupports *> |
| michael@0 | 24 | (::JS_GetContextPrivate(cx))); |
| michael@0 | 25 | |
| michael@0 | 26 | // This will return a pointer to something that's about to be |
| michael@0 | 27 | // released, but that's ok here. |
| michael@0 | 28 | return scx; |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | JSObject* GetDefaultScopeFromJSContext(JSContext *cx); |
| michael@0 | 32 | |
| michael@0 | 33 | // A factory function for turning a JS::Value argv into an nsIArray |
| michael@0 | 34 | // but also supports an effecient way of extracting the original argv. |
| michael@0 | 35 | // Bug 312003 describes why this must be "void *", but argv will be cast to |
| michael@0 | 36 | // JS::Value* and the args are found at: |
| michael@0 | 37 | // ((JS::Value*)aArgv)[0], ..., ((JS::Value*)aArgv)[aArgc - 1] |
| michael@0 | 38 | // The resulting object will take a copy of the array, and ensure each |
| michael@0 | 39 | // element is rooted. |
| michael@0 | 40 | // Optionally, aArgv may be nullptr, in which case the array is allocated and |
| michael@0 | 41 | // rooted, but all items remain nullptr. This presumably means the caller |
| michael@0 | 42 | // will then QI us for nsIJSArgArray, and set our array elements. |
| michael@0 | 43 | nsresult NS_CreateJSArgv(JSContext *aContext, uint32_t aArgc, void *aArgv, |
| michael@0 | 44 | nsIJSArgArray **aArray); |
| michael@0 | 45 | |
| michael@0 | 46 | #endif // nsDOMJSUtils_h__ |
