/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "xpctest_private.h"
#include "xpctest_interfaces.h"
#include "js/Value.h"
NS_IMPL_ISUPPORTS(nsXPCTestParams, nsIXPCTestParams)
nsXPCTestParams::nsXPCTestParams()
{
}
nsXPCTestParams::~nsXPCTestParams()
{
}
#define GENERIC_METHOD_IMPL { \
*_retval = *b; \
*b = a; \
return NS_OK; \
}
#define STRING_METHOD_IMPL { \
_retval.Assign(b); \
b.Assign(a); \
return NS_OK; \
}
#define TAKE_OWNERSHIP_NOOP(val) {}
#define TAKE_OWNERSHIP_INTERFACE(val) {static_cast<nsISupports*>(val)->AddRef();}
#define TAKE_OWNERSHIP_STRING(val) { \
nsDependentCString vprime(val); \
val = ToNewCString(vprime); \
}
#define TAKE_OWNERSHIP_WSTRING(val) { \
nsDependentString vprime(val); \
val = ToNewUnicode(vprime); \
}
// Macro for our buffer-oriented types:
// 'type' is the type of element that the buffer contains.
// 'padding' is an offset added to length, allowing us to handle
// null-terminated strings.
// 'TAKE_OWNERSHIP' is one of the macros above.
#define BUFFER_METHOD_IMPL(type, padding, TAKE_OWNERSHIP) { \
uint32_t elemSize = sizeof(type); \
\
/* Copy b into rv. */ \
*rvLength = *bLength; \
*rv = static_cast<type*>(moz_xmalloc(elemSize * (*bLength + padding))); \
if (!*rv) \
return NS_ERROR_OUT_OF_MEMORY; \
memcpy(*rv, *b, elemSize * (*bLength + padding)); \
\
/* Copy a into b. */ \
*bLength = aLength; \
free(*b); \
*b = static_cast<type*>(moz_xmalloc(elemSize * (aLength + padding))); \
if (!*b) \
return NS_ERROR_OUT_OF_MEMORY; \
memcpy(*b, a, elemSize * (aLength + padding)); \
\
/* We need to take ownership of the data we got from a, \
since the caller owns it. */ \
for (unsigned i = 0; i < *bLength + padding; ++i) \
TAKE_OWNERSHIP((*b)[i]); \
\
return NS_OK; \
}
NS_IMETHODIMP nsXPCTestParams::TestBoolean(bool a, bool* b, bool* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestOctet(uint8_t a, uint8_t* b, uint8_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestShort(int16_t a, int16_t* b, int16_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestLong(int32_t a, int32_t* b, int32_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestLongLong(int64_t a, int64_t* b, int64_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestUnsignedShort(uint16_t a, uint16_t* b, uint16_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestUnsignedLong(uint32_t a, uint32_t* b, uint32_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestUnsignedLongLong(uint64_t a, uint64_t* b, uint64_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestFloat(float a, float* b, float* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestDouble(double a, float* b, double* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestChar(char a, char* b, char* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestString(const char * a, char * *b, char * *_retval)
{
nsDependentCString aprime(a);
nsDependentCString bprime(*b);
*_retval = ToNewCString(bprime);
*b = ToNewCString(aprime);
// XPCOM ownership rules dictate that overwritten inout params must be callee-freed.
// See https://developer.mozilla.org/en/XPIDL
free(const_cast<char*>(bprime.get()));
return NS_OK;
}
NS_IMETHODIMP nsXPCTestParams::TestWchar(char16_t a, char16_t* b, char16_t* _retval)
{
GENERIC_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestWstring(const char16_t * a, char16_t * *b, char16_t * *_retval)
{
nsDependentString aprime(a);
nsDependentString bprime(*b);
*_retval = ToNewUnicode(bprime);
*b = ToNewUnicode(aprime);
// XPCOM ownership rules dictate that overwritten inout params must be callee-freed.
// See https://developer.mozilla.org/en/XPIDL
free((void*)bprime.get());
return NS_OK;
}
NS_IMETHODIMP nsXPCTestParams::TestDOMString(const nsAString & a, nsAString & b, nsAString & _retval)
{
STRING_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestAString(const nsAString & a, nsAString & b, nsAString & _retval)
{
STRING_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestAUTF8String(const nsACString & a, nsACString & b, nsACString & _retval)
{
STRING_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestACString(const nsACString & a, nsACString & b, nsACString & _retval)
{
STRING_METHOD_IMPL;
}
NS_IMETHODIMP nsXPCTestParams::TestJsval(JS::Handle<JS::Value> a,
JS::MutableHandle<JS::Value> b,
JS::MutableHandle<JS::Value> _retval)
{
_retval.set(b);
b.set(a);
return NS_OK;
}
NS_IMETHODIMP nsXPCTestParams::TestShortArray(uint32_t aLength, int16_t* a,
uint32_t* bLength, int16_t** b,
uint32_t* rvLength, int16_t** rv)
{
BUFFER_METHOD_IMPL(int16_t, 0, TAKE_OWNERSHIP_NOOP);
}
NS_IMETHODIMP nsXPCTestParams::TestDoubleArray(uint32_t aLength, double* a,
uint32_t* bLength, double** b,
uint32_t* rvLength, double** rv)
{
BUFFER_METHOD_IMPL(double, 0, TAKE_OWNERSHIP_NOOP);
}
NS_IMETHODIMP nsXPCTestParams::TestStringArray(uint32_t aLength, const char * *a,
uint32_t* bLength, char * **b,
uint32_t* rvLength, char * **rv)
{
BUFFER_METHOD_IMPL(char*, 0, TAKE_OWNERSHIP_STRING);
}
NS_IMETHODIMP nsXPCTestParams::TestWstringArray(uint32_t aLength, const char16_t * *a,
uint32_t* bLength, char16_t * **b,
uint32_t* rvLength, char16_t * **rv)
{
BUFFER_METHOD_IMPL(char16_t*, 0, TAKE_OWNERSHIP_WSTRING);
}
NS_IMETHODIMP nsXPCTestParams::TestInterfaceArray(uint32_t aLength, nsIXPCTestInterfaceA** a,
uint32_t* bLength, nsIXPCTestInterfaceA * **b,
uint32_t* rvLength, nsIXPCTestInterfaceA * **rv)
{
BUFFER_METHOD_IMPL(nsIXPCTestInterfaceA*, 0, TAKE_OWNERSHIP_INTERFACE);
}
NS_IMETHODIMP nsXPCTestParams::TestSizedString(uint32_t aLength, const char * a,
uint32_t* bLength, char * *b,
uint32_t* rvLength, char * *rv)
{
BUFFER_METHOD_IMPL(char, 1, TAKE_OWNERSHIP_NOOP);
}
NS_IMETHODIMP nsXPCTestParams::TestSizedWstring(uint32_t aLength, const char16_t * a,
uint32_t* bLength, char16_t * *b,
uint32_t* rvLength, char16_t * *rv)
{
BUFFER_METHOD_IMPL(char16_t, 1, TAKE_OWNERSHIP_NOOP);
}
NS_IMETHODIMP nsXPCTestParams::TestInterfaceIs(const nsIID* aIID, void* a,
nsIID** bIID, void** b,
nsIID** rvIID, void** rv)
{
//
// Getting the buffers and ownership right here can be a little tricky.
//
// The interface pointers are heap-allocated, and b has been AddRef'd
// by XPConnect for the duration of the call. If we snatch it away from b
// and leave no trace, XPConnect won't Release it. Since we also need to
// return an already-AddRef'd pointer in rv, we don't need to do anything
// special here.
*rv = *b;
// rvIID is out-only, so nobody allocated an IID buffer for us. Do that now,
// and store b's IID in the new buffer.
*rvIID = static_cast<nsIID*>(moz_xmalloc(sizeof(nsID)));
if (!*rvIID)
return NS_ERROR_OUT_OF_MEMORY;
**rvIID = **bIID;
// Copy the interface pointer from a to b. Since a is in-only, XPConnect will
// release it upon completion of the call. AddRef it for b.
*b = a;
static_cast<nsISupports*>(*b)->AddRef();
// We already had a buffer allocated for b's IID, so we can re-use it.
**bIID = *aIID;
return NS_OK;
}
NS_IMETHODIMP nsXPCTestParams::TestInterfaceIsArray(uint32_t aLength, const nsIID* aIID,
void** a,
uint32_t* bLength, nsIID** bIID,
void*** b,
uint32_t* rvLength, nsIID** rvIID,
void*** rv)
{
// Transfer the IIDs. See the comments in TestInterfaceIs (above) for an
// explanation of what we're doing.
*rvIID = static_cast<nsIID*>(moz_xmalloc(sizeof(nsID)));
if (!*rvIID)
return NS_ERROR_OUT_OF_MEMORY;
**rvIID = **bIID;
**bIID = *aIID;
// The macro is agnostic to the actual interface types, so we can re-use code here.
//
// Do this second, since the macro returns.
BUFFER_METHOD_IMPL(void*, 0, TAKE_OWNERSHIP_INTERFACE);
}
NS_IMETHODIMP nsXPCTestParams::TestOutAString(nsAString & o)
{
o.AssignLiteral("out");
return NS_OK;
}
NS_IMETHODIMP nsXPCTestParams::TestStringArrayOptionalSize(const char * *a, uint32_t length, nsACString& out)
{
out.Truncate();
for (uint32_t i = 0; i < length; ++i) {
out.Append(a[i]);
}
return NS_OK;
}