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Implemented a helper class to retrieve a string value from the stack as a string or generate a formatted string if necessary.

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Sandu Liviu Catalin
2016-03-25 00:25:03 +02:00
parent 42af986890
commit e4b93b020a
2 changed files with 145 additions and 13 deletions
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63
source/Base/Shared.hpp
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@@ -82,6 +82,49 @@ private:
HSQUIRRELVM m_VM; /* The VM where the stack should be restored. */
};
/* ------------------------------------------------------------------------------------------------
* Helper structure for retrieving a value from the stack as a string or a formatted string.
*/
struct StackStrF
{
// --------------------------------------------------------------------------------------------
CSStr mPtr; // Pointer to the C string that was retrieved.
SQInteger mLen; // The string length if it could be retrieved.
SQRESULT mRes; // The result of the retrieval attempts.
HSQOBJECT mObj; // Strong reference to the string object.
HSQUIRRELVM mVM; // The associated virtual machine.
/* --------------------------------------------------------------------------------------------
* Base constructor.
*/
StackStrF(HSQUIRRELVM vm, SQInteger idx, bool fmt = true);
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF(const StackStrF & o) = delete;
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF(StackStrF && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~StackStrF();
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF & operator = (const StackStrF & o) = delete;
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF & operator = (StackStrF && o) = delete;
};
/* ------------------------------------------------------------------------------------------------
* Perform an equality comparison between two values taking into account floating point issues.
*/
@@ -241,14 +284,12 @@ Object BufferToStrObj(const Buffer & b, Uint32 size);
*/
template < typename T > Object MakeObject(const T & v)
{
// Remember the current stack size
const StackGuard sg;
// Transform the specified value into a script object
PushVar< T >(DefaultVM::Get(), v);
// Get the object from the stack to obtain a strong reference to it
Var< Object > var(DefaultVM::Get(), -1);
// Now it's safe to pop the object from the stack
sq_pop(DefaultVM::Get(), 1);
// Return the resulted script object
return var.value;
// Get the object from the stack and return it
return Var< Object >(DefaultVM::Get(), -1).value;
}
/* ------------------------------------------------------------------------------------------------
@@ -256,14 +297,12 @@ template < typename T > Object MakeObject(const T & v)
*/
template < typename T > Object MakeObject(HSQUIRRELVM vm, const T & v)
{
// Remember the current stack size
const StackGuard sg;
// Transform the specified value into a script object
PushVar< T >(vm, v);
// Get the object from the stack to obtain a strong reference to it
Var< Object > var(vm, -1);
// Now it's safe to pop the object from the stack
sq_pop(vm, 1);
// Return the resulted script object
return var.value;
// Get the object from the stack and return it
return Var< Object >(vm, -1).value;
}
/* ------------------------------------------------------------------------------------------------