diff options
author | Erik Verbruggen <erik.verbruggen@qt.io> | 2016-06-22 10:12:13 +0200 |
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committer | Erik Verbruggen <erik.verbruggen@qt.io> | 2016-06-22 11:07:05 +0000 |
commit | 702c4247d74ffb7e4fb1aaca96d70f4591203ba2 (patch) | |
tree | 6c0a41332cf4a8ab0051600efdd27b0746574795 /src/qml/jsruntime/qv4numberobject.cpp | |
parent | fd0e3c6d569a7410fff33974ce9f908dc2de0e22 (diff) |
V4: Pass scope around as parameters inside the runtime.
The implementation of many (or all) runtime functions consist of first
creating a QV4::Scope, which saves and restores the JS stack pointer.
It also prevents tail-calls because of that restoring behavior. In many
cases it suffices to do that at the entry-point of the runtime.
The return value of a JS function call is now also stored in the scope.
Previously, all return values were stored in a ScopedValue, got loaded
on return, and immediately stored in another ScopedValue in the caller.
This resulted in a lot of stores, where now there is only one store
needed, and no extra ScopedValue for every function.
Change-Id: I13d80fc0ce72c5702ef1536d41d12f710c5914fa
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src/qml/jsruntime/qv4numberobject.cpp')
-rw-r--r-- | src/qml/jsruntime/qv4numberobject.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/qml/jsruntime/qv4numberobject.cpp b/src/qml/jsruntime/qv4numberobject.cpp index f6b3e9a2b3..d27eef1d79 100644 --- a/src/qml/jsruntime/qv4numberobject.cpp +++ b/src/qml/jsruntime/qv4numberobject.cpp @@ -76,17 +76,16 @@ Heap::NumberCtor::NumberCtor(QV4::ExecutionContext *scope) { } -ReturnedValue NumberCtor::construct(const Managed *m, CallData *callData) +void NumberCtor::construct(const Managed *, Scope &scope, CallData *callData) { - Scope scope(m->cast<NumberCtor>()->engine()); double dbl = callData->argc ? callData->args[0].toNumber() : 0.; - return Encode(scope.engine->newNumberObject(dbl)); + scope.result = Encode(scope.engine->newNumberObject(dbl)); } -ReturnedValue NumberCtor::call(const Managed *, CallData *callData) +void NumberCtor::call(const Managed *, Scope &scope, CallData *callData) { double dbl = callData->argc ? callData->args[0].toNumber() : 0.; - return Encode(dbl); + scope.result = Encode(dbl); } void NumberPrototype::init(ExecutionEngine *engine, Object *ctor) |