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Bug 692342 - Reorder in/out/inout handling in XPCWrappedNative parameter conversion. r=mrbkap

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Apologies for the copy paste here. Fixing that will require some more serious re-architecting.
This commit is contained in:
Bobby Holley 2011-11-25 17:09:07 -08:00
parent 8d90d94448
commit 622f731967
1 changed files with 36 additions and 14 deletions
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50
js/xpconnect/src/XPCWrappedNative.cpp
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@ -2638,11 +2638,6 @@ CallMethodHelper::ConvertIndependentParam(uint8 i)
if (paramInfo.IsIndirect())
dp->SetIndirect();
jsval src;
if (!GetOutParamSource(i, &src))
return JS_FALSE;
// The JSVal proper is always stored within the 'val' union and passed
// indirectly, regardless of in/out-ness.
if (type_tag == nsXPTType::T_JSVAL) {
@ -2656,10 +2651,26 @@ CallMethodHelper::ConvertIndependentParam(uint8 i)
if (!type.IsArithmetic())
dp->SetValNeedsCleanup();
if (paramInfo.IsOut()) {
if(!paramInfo.IsIn())
return JS_TRUE;
} else {
// Even if there's nothing to convert, we still need to examine the
// JSObject container for out-params. If it's null or otherwise invalid,
// we want to know before the call, rather than after.
//
// This is a no-op for 'in' params.
jsval src;
if (!GetOutParamSource(i, &src))
return JS_FALSE;
// All that's left to do is value conversion. Bail early if we don't need
// to do that.
if (!paramInfo.IsIn())
return JS_TRUE;
// We're definitely some variety of 'in' now, so there's something to
// convert. The source value for conversion depends on whether we're
// dealing with an 'in' or an 'inout' parameter. 'inout' was handled above,
// so all that's left is 'in'.
if (!paramInfo.IsOut()) {
// Handle the 'in' case.
NS_ASSERTION(i < mArgc || paramInfo.IsOptional(),
"Expected either enough arguments or an optional argument");
if (i < mArgc)
@ -2741,15 +2752,26 @@ CallMethodHelper::ConvertDependentParam(uint8 i)
dp->SetValNeedsCleanup();
}
// Even if there's nothing to convert, we still need to examine the
// JSObject container for out-params. If it's null or otherwise invalid,
// we want to know before the call, rather than after.
//
// This is a no-op for 'in' params.
jsval src;
if (!GetOutParamSource(i, &src))
return JS_FALSE;
if (paramInfo.IsOut()) {
if (!paramInfo.IsIn())
return JS_TRUE;
} else {
// All that's left to do is value conversion. Bail early if we don't need
// to do that.
if (!paramInfo.IsIn())
return JS_TRUE;
// We're definitely some variety of 'in' now, so there's something to
// convert. The source value for conversion depends on whether we're
// dealing with an 'in' or an 'inout' parameter. 'inout' was handled above,
// so all that's left is 'in'.
if (!paramInfo.IsOut()) {
// Handle the 'in' case.
NS_ASSERTION(i < mArgc || paramInfo.IsOptional(),
"Expected either enough arguments or an optional argument");
src = i < mArgc ? mArgv[i] : JSVAL_NULL;