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SqMod/include/sqrat/sqratTypes.h
Sandu Liviu Catalin 0137dfc66f Move the plugin Squirrel utilities to the Sqrat binding utility.
Implement registration of functions and methods with string formatting support in the Sqrat binding utility.
Few minor other fixes.
2016-11-16 11:54:07 +02:00

1207 lines
47 KiB
C++

//
// SqratTypes: Type Translators
//
//
// Copyright (c) 2009 Brandon Jones
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
#if !defined(_SCRAT_TYPES_H_)
#define _SCRAT_TYPES_H_
#ifdef SQUNICODE
#include <cstdlib>
#include <cstring>
#endif
#ifdef SQMOD_PLUGIN_API
#include <SqAPI.h>
#else
#include <squirrel.h>
#endif // SQMOD_PLUGIN_API
#include <string>
#include "sqratClassType.h"
#include "sqratUtil.h"
namespace Sqrat {
/// @cond DEV
// copied from http://www.experts-exchange.com/Programming/Languages/CPP/A_223-Determing-if-a-C-type-is-convertable-to-another-at-compile-time.html
template <typename T1, typename T2>
struct is_convertible
{
private:
struct True_ { char x[2]; };
struct False_ { };
static True_ helper(T2 const &);
static False_ helper(...);
static T1* dummy;
public:
static bool const YES = (
sizeof(True_) == sizeof(is_convertible::helper(*dummy))
);
};
template <typename T, bool b>
struct popAsInt
{
T value;
popAsInt(HSQUIRRELVM vm, SQInteger idx)
{
SQObjectType value_type = sq_gettype(vm, idx);
switch(value_type) {
case OT_BOOL:
SQBool sqValueb;
sq_getbool(vm, idx, &sqValueb);
value = static_cast<T>(sqValueb);
break;
case OT_INTEGER:
SQInteger sqValue;
sq_getinteger(vm, idx, &sqValue);
value = static_cast<T>(sqValue);
break;
case OT_FLOAT:
SQFloat sqValuef;
sq_getfloat(vm, idx, &sqValuef);
value = static_cast<T>(static_cast<int>(sqValuef));
break;
default:
SQTHROW(vm, FormatTypeError(vm, idx, _SC("integer")));
value = static_cast<T>(0);
break;
}
}
};
template <typename T>
struct popAsInt<T, false>
{
T value; // cannot be initialized because unknown constructor parameters
popAsInt(HSQUIRRELVM /*vm*/, SQInteger /*idx*/)
{
// keep the current error message already set previously, do not touch that here
}
};
template <typename T>
struct popAsFloat
{
T value;
popAsFloat(HSQUIRRELVM vm, SQInteger idx)
{
SQObjectType value_type = sq_gettype(vm, idx);
switch(value_type) {
case OT_BOOL:
SQBool sqValueb;
sq_getbool(vm, idx, &sqValueb);
value = static_cast<T>(sqValueb);
break;
case OT_INTEGER:
SQInteger sqValue; \
sq_getinteger(vm, idx, &sqValue);
value = static_cast<T>(sqValue);
break;
case OT_FLOAT:
SQFloat sqValuef;
sq_getfloat(vm, idx, &sqValuef);
value = static_cast<T>(sqValuef);
break;
default:
SQTHROW(vm, FormatTypeError(vm, idx, _SC("float")));
value = 0;
break;
}
}
};
/// @endcond
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as copies
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/// \remarks
/// This specialization requires T to have a default constructor.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var {
T value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
SQTRY()
T* ptr = ClassType<T>::GetInstance(vm, idx);
if (ptr != NULL) {
value = *ptr;
#if !defined (SCRAT_NO_ERROR_CHECKING)
} else if (is_convertible<T, SQInteger>::YES) { /* value is likely of integral type like enums */
SQCLEAR(vm); // clear the previous error
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
#endif
} else {
// initialize value to avoid warnings
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
}
SQCATCH(vm) {
#if defined (SCRAT_USE_EXCEPTIONS)
SQUNUSED(e); // avoid "unreferenced local variable" warning
#endif
if (is_convertible<T, SQInteger>::YES) { /* value is likely of integral type like enums */
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
} else {
SQRETHROW(vm);
}
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const T& value) {
if (ClassType<T>::hasClassData(vm))
ClassType<T>::PushInstanceCopy(vm, value);
else /* try integral type */
pushAsInt<T, is_convertible<T, SQInteger>::YES>().push(vm, value);
}
private:
template <class T2, bool b>
struct pushAsInt {
void push(HSQUIRRELVM vm, const T2& /*value*/) {
assert(false); // fails because called before a Sqrat::Class for T exists and T is not convertible to SQInteger
sq_pushnull(vm);
}
};
template <class T2>
struct pushAsInt<T2, true> {
void push(HSQUIRRELVM vm, const T2& value) {
sq_pushinteger(vm, static_cast<SQInteger>(value));
}
};
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as references
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<T&> {
T& value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(*ClassType<T>::GetInstance(vm, idx)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVarR to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, T& value) {
if (ClassType<T>::hasClassData(vm))
ClassType<T>::PushInstance(vm, &value);
else /* try integral type */
pushAsInt<T, is_convertible<T, SQInteger>::YES>().push(vm, value);
}
private:
template <class T2, bool b>
struct pushAsInt {
void push(HSQUIRRELVM vm, const T2& /*value*/) {
assert(false); // fails because called before a Sqrat::Class for T exists and T is not convertible to SQInteger
sq_pushnull(vm);
}
};
template <class T2>
struct pushAsInt<T2, true> {
void push(HSQUIRRELVM vm, const T2& value) {
sq_pushinteger(vm, static_cast<SQInteger>(value));
}
};
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as pointers
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<T*> {
T* value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(ClassType<T>::GetInstance(vm, idx, true)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, T* value) {
ClassType<T>::PushInstance(vm, value);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as pointers to const data
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<T* const> {
T* const value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(ClassType<T>::GetInstance(vm, idx, true)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, T* const value) {
ClassType<T>::PushInstance(vm, value);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as const references
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<const T&> {
const T& value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(*ClassType<T>::GetInstance(vm, idx)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const T& value) {
ClassType<T>::PushInstanceCopy(vm, value);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as const pointers
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<const T*> {
const T* value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(ClassType<T>::GetInstance(vm, idx, true)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const T* value) {
ClassType<T>::PushInstance(vm, const_cast<T*>(value));
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push class instances to and from the stack as const pointers to const data
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
struct Var<const T* const> {
const T* const value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(ClassType<T>::GetInstance(vm, idx, true)) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const T* const value) {
ClassType<T>::PushInstance(vm, const_cast<T*>(value));
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get (as copies) and push (as references) class instances to and from the stack as a SharedPtr
///
/// \tparam T Type of instance (usually doesnt need to be defined explicitly)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T> void PushVarR(HSQUIRRELVM vm, T& value);
template<class T>
struct Var<SharedPtr<T> > {
SharedPtr<T> value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as the given type
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/// \remarks
/// This function MUST have its Error handled if it occurred.
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
if (sq_gettype(vm, idx) != OT_NULL) {
Var<T> instance(vm, idx);
SQCATCH_NOEXCEPT(vm) {
return;
}
value.Init(new T(instance.value));
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a class object on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const SharedPtr<T>& value) {
PushVarR(vm, *value);
}
};
// Integer types
#define SCRAT_INTEGER( type ) \
template<> \
struct Var<type> { \
type value; \
Var(HSQUIRRELVM vm, SQInteger idx) { \
value = popAsInt<type, true>(vm, idx).value; \
} \
static void push(HSQUIRRELVM vm, const type& value) { \
sq_pushinteger(vm, static_cast<SQInteger>(value)); \
} \
};\
\
template<> \
struct Var<const type&> { \
type value; \
Var(HSQUIRRELVM vm, SQInteger idx) { \
value = popAsInt<type, true>(vm, idx).value; \
} \
static void push(HSQUIRRELVM vm, const type& value) { \
sq_pushinteger(vm, static_cast<SQInteger>(value)); \
} \
};
SCRAT_INTEGER(unsigned int)
SCRAT_INTEGER(signed int)
SCRAT_INTEGER(unsigned long)
SCRAT_INTEGER(signed long)
SCRAT_INTEGER(unsigned short)
SCRAT_INTEGER(signed short)
SCRAT_INTEGER(unsigned char)
SCRAT_INTEGER(signed char)
SCRAT_INTEGER(unsigned long long)
SCRAT_INTEGER(signed long long)
#ifdef _MSC_VER
#if defined(__int64)
SCRAT_INTEGER(unsigned __int64)
SCRAT_INTEGER(signed __int64)
#endif
#endif
// Float types
#define SCRAT_FLOAT( type ) \
template<> \
struct Var<type> { \
type value; \
Var(HSQUIRRELVM vm, SQInteger idx) { \
value = popAsFloat<type>(vm, idx).value; \
} \
static void push(HSQUIRRELVM vm, const type& value) { \
sq_pushfloat(vm, static_cast<SQFloat>(value)); \
} \
}; \
\
template<> \
struct Var<const type&> { \
type value; \
Var(HSQUIRRELVM vm, SQInteger idx) { \
value = popAsFloat<type>(vm, idx).value; \
} \
static void push(HSQUIRRELVM vm, const type& value) { \
sq_pushfloat(vm, static_cast<SQFloat>(value)); \
} \
};
SCRAT_FLOAT(float)
SCRAT_FLOAT(double)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push bools to and from the stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<bool> {
bool value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a bool
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
SQBool sqValue;
sq_tobool(vm, idx, &sqValue);
value = (sqValue != 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a bool on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const bool& value) {
sq_pushbool(vm, static_cast<SQBool>(value));
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push const bool references to and from the stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const bool&> {
bool value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a bool
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
SQBool sqValue;
sq_tobool(vm, idx, &sqValue);
value = (sqValue != 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a bool on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const bool& value) {
sq_pushbool(vm, static_cast<SQBool>(value));
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push SQChar arrays to and from the stack (usually is a char array)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<SQChar*> {
private:
HSQOBJECT obj; /* hold a reference to the object holding value during the Var struct lifetime*/
HSQUIRRELVM v;
public:
SQChar* value; ///< The actual value of get operations
SQInteger size; ///< The size of the obtained string
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a character array
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
sq_tostring(vm, idx);
sq_getstackobj(vm, -1, &obj);
sq_getstringandsize(vm, -1, (const SQChar**)&value, &size);
sq_addref(vm, &obj);
sq_pop(vm,1);
v = vm;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Destructor
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
~Var()
{
if(v && !sq_isnull(obj)) {
sq_release(v, &obj);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a character array on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
/// \param len Length of the string (defaults to finding the length by searching for a terminating null-character)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const SQChar* value, SQInteger len = -1) {
sq_pushstring(vm, value, len);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push const SQChar arrays to and from the stack (usually is a const char array)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const SQChar*> {
private:
HSQOBJECT obj; /* hold a reference to the object holding value during the Var struct lifetime*/
HSQUIRRELVM v;
public:
const SQChar* value; ///< The actual value of get operations
SQInteger size; ///< The size of the obtained string
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a character array
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
sq_tostring(vm, idx);
sq_getstackobj(vm, -1, &obj);
sq_getstringandsize(vm, -1, &value, &size);
sq_addref(vm, &obj);
sq_pop(vm,1);
v = vm;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Destructor
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
~Var()
{
if(v && !sq_isnull(obj)) {
sq_release(v, &obj);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a character array on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
/// \param len Length of the string (defaults to finding the length by searching for a terminating null-character)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const SQChar* value, SQInteger len = -1) {
sq_pushstring(vm, value, len);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push strings to and from the stack (string is usually std::string)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<string> {
string value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
const SQChar* ret;
SQInteger len;
sq_tostring(vm, idx);
sq_getstringandsize(vm, -1, &ret, &len);
value.assign(ret, len);
sq_pop(vm,1);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const string& value) {
sq_pushstring(vm, value.c_str(), value.size());
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push const string references to and from the stack as copies (strings are always copied)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const string&> {
string value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
const SQChar* ret;
SQInteger len;
sq_tostring(vm, idx);
sq_getstringandsize(vm, -1, &ret, &len);
value.assign(ret, len);
sq_pop(vm,1);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const string& value) {
sq_pushstring(vm, value.c_str(), value.size());
}
};
#ifdef SQUNICODE
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push std::string to and from the stack when SQChar is not char (must define SQUNICODE)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<std::string> {
std::string value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
const SQChar* ret;
SQInteger len;
sq_tostring(vm, idx);
sq_getstringandsize(vm, -1, &ret, &len);
value = wstring_to_string(string(ret, len));
sq_pop(vm,1);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const std::string& value) {
std::wstring s = string_to_wstring(value);
sq_pushstring(vm, s.c_str(), s.size());
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push const std::string references to and from the stack when SQChar is not char (must define SQUNICODE)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const std::string&> {
std::string value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
const SQChar* ret;
SQInteger len;
sq_tostring(vm, idx);
sq_getstringandsize(vm, -1, &ret, &len);
value = wstring_to_string(string(ret, len));
sq_pop(vm,1);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const std::string& value) {
std::wstring s = string_to_wstring(value);
sq_pushstring(vm, s.c_str(), s.size());
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push SQChar arrays to and from the stack when SQChar is not char (must define SQUNICODE)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<char*> {
private:
HSQOBJECT obj;/* hold a reference to the object holding value during the Var struct lifetime*/
HSQUIRRELVM v;
public:
char* value; ///< The actual value of get operations
String::size_type size; ///< The size of the obtained string
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a character array
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
std::string holder;
const SQChar *sv;
SQInteger len;
sq_tostring(vm, idx);
sq_getstackobj(vm, -1, &obj);
sq_getstringandsize(vm, -1, &sv, &len);
sq_addref(vm, &obj);
sq_pop(vm,1);
v = vm;
holder = wstring_to_string(string(sv, len));
value = strdup(holder.c_str());
size = holder.size();
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Destructor
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
~Var()
{
if(v && !sq_isnull(obj)) {
sq_release(v, &obj);
free(value);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a character array on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
/// \param len Length of the string (defaults to finding the length by searching for a terminating null-character)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const char* value, SQInteger len = -1) {
sq_pushstring(vm, string_to_wstring(std::string(value)).c_str(), len);
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push const SQChar arrays to and from the stack when SQChar is not char (must define SQUNICODE)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const char*> {
private:
HSQOBJECT obj; /* hold a reference to the object holding value during the Var struct lifetime*/
HSQUIRRELVM v;
public:
char* value; ///< The actual value of get operations
String::size_type size; ///< The size of the obtained string
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a character array
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) {
std::string holder;
const SQChar *sv;
SQInteger len;
sq_tostring(vm, idx);
sq_getstackobj(vm, -1, &obj);
sq_getstringandsize(vm, -1, &sv, &len);
sq_addref(vm, &obj);
sq_pop(vm,1);
v = vm;
holder = wstring_to_string(string(sv, len));
value = strdup(holder.c_str());
size = holder.size();
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Destructor
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
~Var()
{
if(v && !sq_isnull(obj)) {
sq_release(v, &obj);
free(value);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a character array on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
/// \param len Length of the string (defaults to finding the length by searching for a terminating null-character)
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const char* value, SQInteger len = -1) {
sq_pushstring(vm, string_to_wstring(std::string(value)).c_str(), len);
}
};
#endif
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push StackStrF types to and from the stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<StackStrF &> {
StackStrF value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(vm, idx, false) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const StackStrF& value) {
if (sq_isstring(value.mObj)) {
sq_pushobject(vm, value.mObj);
} else {
sq_pushstring(vm, value.mPtr, value.mLen);
}
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Used to get and push StackStrF types to and from the stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<>
struct Var<const StackStrF&> {
StackStrF value; ///< The actual value of get operations
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Attempts to get the value off the stack at idx as a string
///
/// \param vm Target VM
/// \param idx Index trying to be read
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Var(HSQUIRRELVM vm, SQInteger idx) : value(vm, idx, false) {
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Called by Sqrat::PushVar to put a string on the stack
///
/// \param vm Target VM
/// \param value Value to push on to the VM's stack
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void push(HSQUIRRELVM vm, const StackStrF& value) {
if (sq_isstring(value.mObj)) {
sq_pushobject(vm, value.mObj);
} else {
sq_pushstring(vm, value.mPtr, value.mLen);
}
}
};
// Non-referencable type definitions
template<class T> struct is_referencable {static const bool value = true;};
#define SCRAT_MAKE_NONREFERENCABLE( type ) \
template<> struct is_referencable<type> {static const bool value = false;};
SCRAT_MAKE_NONREFERENCABLE(unsigned int)
SCRAT_MAKE_NONREFERENCABLE(signed int)
SCRAT_MAKE_NONREFERENCABLE(unsigned long)
SCRAT_MAKE_NONREFERENCABLE(signed long)
SCRAT_MAKE_NONREFERENCABLE(unsigned short)
SCRAT_MAKE_NONREFERENCABLE(signed short)
SCRAT_MAKE_NONREFERENCABLE(unsigned char)
SCRAT_MAKE_NONREFERENCABLE(signed char)
SCRAT_MAKE_NONREFERENCABLE(unsigned long long)
SCRAT_MAKE_NONREFERENCABLE(signed long long)
SCRAT_MAKE_NONREFERENCABLE(float)
SCRAT_MAKE_NONREFERENCABLE(double)
SCRAT_MAKE_NONREFERENCABLE(bool)
SCRAT_MAKE_NONREFERENCABLE(string)
#ifdef _MSC_VER
#if defined(__int64)
SCRAT_MAKE_NONREFERENCABLE(unsigned __int64)
SCRAT_MAKE_NONREFERENCABLE(signed __int64)
#endif
#endif
#ifdef SQUNICODE
SCRAT_MAKE_NONREFERENCABLE(std::string)
#endif
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a value on to a given VM's stack
///
/// \param vm VM that the variable will be pushed on to the stack of
/// \param value The actual value being pushed
///
/// \tparam T Type of value (usually doesnt need to be defined explicitly)
///
/// \remarks
/// What this function does is defined by Sqrat::Var template specializations,
/// and thus you can create custom functionality for it by making new template specializations.
/// When making a custom type that is not referencable, you must use SCRAT_MAKE_NONREFERENCABLE( type )
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
inline void PushVar(HSQUIRRELVM vm, T* value) {
Var<T*>::push(vm, value);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a value on to a given VM's stack
///
/// \param vm VM that the variable will be pushed on to the stack of
/// \param value The actual value being pushed
///
/// \tparam T Type of value (usually doesnt need to be defined explicitly)
///
/// \remarks
/// What this function does is defined by Sqrat::Var template specializations,
/// and thus you can create custom functionality for it by making new template specializations.
/// When making a custom type that is not referencable, you must use SCRAT_MAKE_NONREFERENCABLE( type )
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
inline void PushVar(HSQUIRRELVM vm, const T& value) {
Var<T>::push(vm, value);
}
/// @cond DEV
template<class T, bool b>
struct PushVarR_helper {
inline static void push(HSQUIRRELVM vm, T value) {
PushVar<T>(vm, value);
}
};
template<class T>
struct PushVarR_helper<T, false> {
inline static void push(HSQUIRRELVM vm, const T& value) {
PushVar<const T&>(vm, value);
}
};
/// @endcond
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a reference on to a given VM's stack (some types cannot be referenced and will be copied instead)
///
/// \param vm VM that the reference will be pushed on to the stack of
/// \param value The actual referenced value being pushed
///
/// \tparam T Type of value (usually doesnt need to be defined explicitly)
///
/// \remarks
/// What this function does is defined by Sqrat::Var template specializations,
/// and thus you can create custom functionality for it by making new template specializations.
/// When making a custom type that is not referencable, you must use SCRAT_MAKE_NONREFERENCABLE( type )
///
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
inline void PushVarR(HSQUIRRELVM vm, T& value) {
if (!is_pointer<T>::value && is_referencable<typename remove_cv<T>::type>::value) {
Var<T&>::push(vm, value);
} else {
PushVarR_helper<T, is_pointer<T>::value>::push(vm, value);
}
}
}
#endif