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swig/Lib/lua/luarun.swg
Artem Serebriyskiy 0ee724ca80 Add compatibility option for old-style inheritance
2014-02-19 13:34:49 +04:00

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/* -----------------------------------------------------------------------------
* luarun.swg
*
* This file contains the runtime support for Lua modules
* and includes code for managing global variables and pointer
* type checking.
* ----------------------------------------------------------------------------- */
#ifdef __cplusplus
extern "C" {
#endif
#include "lua.h"
#include "lauxlib.h"
#include <stdlib.h> /* for malloc */
#include <assert.h> /* for a few sanity tests */
/* -----------------------------------------------------------------------------
* Lua flavors
* ----------------------------------------------------------------------------- */
#define SWIG_LUA_FLAVOR_LUA 1
#define SWIG_LUA_FLAVOR_ELUA 2
#define SWIG_LUA_FLAVOR_ELUAC 3
#if !defined(SWIG_LUA_TARGET)
# error SWIG_LUA_TARGET not defined
#endif
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUA) || (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUAC)
# define SWIG_LUA_CONSTTAB_INT(B, C) LSTRKEY(B), LNUMVAL(C)
# define SWIG_LUA_CONSTTAB_FLOAT(B, C) LSTRKEY(B), LNUMVAL(C)
# define SWIG_LUA_CONSTTAB_STRING(B, C) LSTRKEY(B), LSTRVAL(C)
# define SWIG_LUA_CONSTTAB_CHAR(B, C) LSTRKEY(B), LNUMVAL(C)
/* Those two types of constants are not supported in elua */
# define SWIG_LUA_CONSTTAB_POINTER(B,C,D) LSTRKEY(B), LNILVAL
# define SWIG_LUA_CONSTTAB_BINARY(B, S, C, D) LSTRKEY(B), LNILVAL
#else /* SWIG_LUA_FLAVOR_LUA */
# define SWIG_LUA_CONSTTAB_INT(B, C) SWIG_LUA_INT, (char *)B, (long)C, 0, 0, 0
# define SWIG_LUA_CONSTTAB_FLOAT(B, C) SWIG_LUA_FLOAT, (char *)B, 0, (double)C, 0, 0
# define SWIG_LUA_CONSTTAB_STRING(B, C) SWIG_LUA_STRING, (char *)B, 0, 0, (void *)C, 0
# define SWIG_LUA_CONSTTAB_CHAR(B, C) SWIG_LUA_CHAR, (char *)B, (long)C, 0, 0, 0
# define SWIG_LUA_CONSTTAB_POINTER(B,C,D)\
SWIG_LUA_POINTER, (char *)B, 0, 0, (void *)C, &D
# define SWIG_LUA_CONSTTAB_BINARY(B, S, C, D)\
SWIG_LUA_BINARY, (char *)B, S, 0, (void *)C, &D
#endif
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUA) || (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUAC)
# define LRO_STRVAL(v) {{.p = (char *) v}, LUA_TSTRING}
# define LSTRVAL LRO_STRVAL
#endif
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUA) || (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUAC)
#include "lrodefs.h"
#include "lrotable.h"
#endif
/* -----------------------------------------------------------------------------
* compatibility defines
* ----------------------------------------------------------------------------- */
/* History of Lua C API length functions: In Lua 5.0 (and before?)
there was "lua_strlen". In Lua 5.1, this was renamed "lua_objlen",
but a compatibility define of "lua_strlen" was added. In Lua 5.2,
this function was again renamed, to "lua_rawlen" (to emphasize that
it doesn't call the "__len" metamethod), and the compatibility
define of lua_strlen was removed. All SWIG uses have been updated
to "lua_rawlen", and we add our own defines of that here for older
versions of Lua. */
#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 501
# define lua_rawlen lua_strlen
#elif LUA_VERSION_NUM == 501
# define lua_rawlen lua_objlen
#endif
/* lua_pushglobaltable is the recommended "future-proof" way to get
the global table for Lua 5.2 and later. Here we define
lua_pushglobaltable ourselves for Lua versions before 5.2. */
#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 502
# define lua_pushglobaltable(L) lua_pushvalue(L, LUA_GLOBALSINDEX)
#endif
/* lua_absindex was introduced in Lua 5.2 */
#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 502
# define lua_absindex(L,i) ((i)>0 || (i) <= LUA_REGISTRYINDEX ? (i) : lua_gettop(L) + (i) + 1)
#endif
/* --------------------------------------------------------------------------
* Helper functions for error handling
* -------------------------------------------------------------------------- */
/* Push the string STR on the Lua stack, like lua_pushstring, but
prefixed with the the location of the innermost Lua call-point
(as formated by luaL_where). */
SWIGRUNTIME void
SWIG_Lua_pusherrstring (lua_State *L, const char *str)
{
luaL_where (L, 1);
lua_pushstring (L, str);
lua_concat (L, 2);
}
/* Push a formatted string generated from FMT and following args on
the Lua stack, like lua_pushfstring, but prefixed with the the
location of the innermost Lua call-point (as formated by luaL_where). */
SWIGRUNTIME void
SWIG_Lua_pushferrstring (lua_State *L, const char *fmt, ...)
{
va_list argp;
va_start(argp, fmt);
luaL_where(L, 1);
lua_pushvfstring(L, fmt, argp);
va_end(argp);
lua_concat(L, 2);
}
/* -----------------------------------------------------------------------------
* global swig types
* ----------------------------------------------------------------------------- */
/* Constant table */
#define SWIG_LUA_INT 1
#define SWIG_LUA_FLOAT 2
#define SWIG_LUA_STRING 3
#define SWIG_LUA_POINTER 4
#define SWIG_LUA_BINARY 5
#define SWIG_LUA_CHAR 6
/* Structure for variable linking table */
typedef struct {
const char *name;
lua_CFunction get;
lua_CFunction set;
} swig_lua_var_info;
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUA) || (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_ELUAC)
typedef const LUA_REG_TYPE swig_lua_method;
typedef const LUA_REG_TYPE swig_lua_const_info;
#else /* Normal lua */
typedef luaL_Reg swig_lua_method;
/* Constant information structure */
typedef struct {
int type;
char *name;
long lvalue;
double dvalue;
void *pvalue;
swig_type_info **ptype;
} swig_lua_const_info;
#endif
typedef struct {
const char *name;
lua_CFunction getmethod;
lua_CFunction setmethod;
} swig_lua_attribute;
struct swig_lua_class;
/* Can be used to create namespaces. Currently used to wrap class static methods/variables/constants */
typedef struct swig_lua_namespace {
const char *name;
swig_lua_method *ns_methods;
swig_lua_attribute *ns_attributes;
swig_lua_const_info *ns_constants;
struct swig_lua_class **ns_classes;
struct swig_lua_namespace **ns_namespaces;
} swig_lua_namespace;
typedef struct swig_lua_class {
const char *name; /* Name that this class has in Lua */
const char *fqname; /* Fully qualified name - Scope + class name */
swig_type_info **type;
lua_CFunction constructor;
void (*destructor)(void *);
swig_lua_method *methods;
swig_lua_attribute *attributes;
swig_lua_namespace *cls_static;
struct swig_lua_class **bases;
const char **base_names;
} swig_lua_class;
/* this is the struct for wrapping all pointers in SwigLua
*/
typedef struct {
swig_type_info *type;
int own; /* 1 if owned & must be destroyed */
void *ptr;
} swig_lua_userdata;
/* this is the struct for wrapping arbitrary packed binary data
(currently it is only used for member function pointers)
the data ordering is similar to swig_lua_userdata, but it is currently not possible
to tell the two structures apart within SWIG, other than by looking at the type
*/
typedef struct {
swig_type_info *type;
int own; /* 1 if owned & must be destroyed */
char data[1]; /* arbitary amount of data */
} swig_lua_rawdata;
/* Common SWIG API */
#define SWIG_NewPointerObj(L, ptr, type, owner) SWIG_Lua_NewPointerObj(L, (void *)ptr, type, owner)
#define SWIG_ConvertPtr(L,idx, ptr, type, flags) SWIG_Lua_ConvertPtr(L,idx,ptr,type,flags)
#define SWIG_MustGetPtr(L,idx, type,flags, argnum,fnname) SWIG_Lua_MustGetPtr(L,idx, type,flags, argnum,fnname)
/* for C++ member pointers, ie, member methods */
#define SWIG_ConvertMember(L, idx, ptr, sz, ty) SWIG_Lua_ConvertPacked(L, idx, ptr, sz, ty)
#define SWIG_NewMemberObj(L, ptr, sz, type) SWIG_Lua_NewPackedObj(L, ptr, sz, type)
/* Runtime API */
#define SWIG_GetModule(clientdata) SWIG_Lua_GetModule((lua_State*)(clientdata))
#define SWIG_SetModule(clientdata, pointer) SWIG_Lua_SetModule((lua_State*) (clientdata), pointer)
#define SWIG_MODULE_CLIENTDATA_TYPE lua_State*
/* Contract support */
#define SWIG_contract_assert(expr, msg) \
if (!(expr)) { SWIG_Lua_pusherrstring(L, (char *) msg); goto fail; } else
/* helper #defines */
#define SWIG_fail {goto fail;}
#define SWIG_fail_arg(func_name,argnum,type) \
{SWIG_Lua_pushferrstring(L,"Error in %s (arg %d), expected '%s' got '%s'",\
func_name,argnum,type,SWIG_Lua_typename(L,argnum));\
goto fail;}
#define SWIG_fail_ptr(func_name,argnum,type) \
SWIG_fail_arg(func_name,argnum,(type && type->str)?type->str:"void*")
#define SWIG_check_num_args(func_name,a,b) \
if (lua_gettop(L)<a || lua_gettop(L)>b) \
{SWIG_Lua_pushferrstring(L,"Error in %s expected %d..%d args, got %d",func_name,a,b,lua_gettop(L));\
goto fail;}
#define SWIG_Lua_get_table(L,n) \
(lua_pushstring(L, n), lua_rawget(L,-2))
#define SWIG_Lua_add_function(L,n,f) \
(lua_pushstring(L, n), \
lua_pushcfunction(L, f), \
lua_rawset(L,-3))
/* special helper for allowing 'nil' for usertypes */
#define SWIG_isptrtype(L,I) (lua_isuserdata(L,I) || lua_isnil(L,I))
#ifdef __cplusplus
/* Special helper for member function pointers
it gets the address, casts it, then dereferences it */
/*#define SWIG_mem_fn_as_voidptr(a) (*((char**)&(a))) */
#endif
/* storing/access of swig_module_info */
SWIGRUNTIME swig_module_info *
SWIG_Lua_GetModule(lua_State *L) {
swig_module_info *ret = 0;
lua_pushstring(L,"swig_runtime_data_type_pointer" SWIG_RUNTIME_VERSION SWIG_TYPE_TABLE_NAME);
lua_rawget(L,LUA_REGISTRYINDEX);
if (lua_islightuserdata(L,-1))
ret=(swig_module_info*)lua_touserdata(L,-1);
lua_pop(L,1); /* tidy */
return ret;
}
SWIGRUNTIME void
SWIG_Lua_SetModule(lua_State *L, swig_module_info *module) {
/* add this all into the Lua registry: */
lua_pushstring(L,"swig_runtime_data_type_pointer" SWIG_RUNTIME_VERSION SWIG_TYPE_TABLE_NAME);
lua_pushlightuserdata(L,(void*)module);
lua_rawset(L,LUA_REGISTRYINDEX);
}
/* -----------------------------------------------------------------------------
* global variable support code: modules
* ----------------------------------------------------------------------------- */
/* this function is called when trying to set an immutable.
default action is to print an error.
This can removed with a compile flag SWIGLUA_IGNORE_SET_IMMUTABLE */
SWIGINTERN int SWIG_Lua_set_immutable(lua_State *L)
{
/* there should be 1 param passed in: the new value */
#ifndef SWIGLUA_IGNORE_SET_IMMUTABLE
lua_pop(L,1); /* remove it */
luaL_error(L,"This variable is immutable");
#endif
return 0; /* should not return anything */
}
/* -----------------------------------------------------------------------------
* global variable support code: namespaces and modules (which are the same thing)
* ----------------------------------------------------------------------------- */
SWIGINTERN int SWIG_Lua_namespace_get(lua_State *L)
{
/* there should be 2 params passed in
(1) table (not the meta table)
(2) string name of the attribute
*/
assert(lua_istable(L,-2)); /* just in case */
lua_getmetatable(L,-2);
assert(lua_istable(L,-1));
SWIG_Lua_get_table(L,".get"); /* find the .get table */
assert(lua_istable(L,-1));
/* look for the key in the .get table */
lua_pushvalue(L,2); /* key */
lua_rawget(L,-2);
lua_remove(L,-2); /* stack tidy, remove .get table */
if (lua_iscfunction(L,-1))
{ /* found it so call the fn & return its value */
lua_call(L,0,1); /* 1 value in (userdata),1 out (result) */
lua_remove(L,-2); /* stack tidy, remove metatable */
return 1;
}
lua_pop(L,1); /* remove whatever was there */
/* ok, so try the .fn table */
SWIG_Lua_get_table(L,".fn"); /* find the .get table */
assert(lua_istable(L,-1)); /* just in case */
lua_pushvalue(L,2); /* key */
lua_rawget(L,-2); /* look for the fn */
lua_remove(L,-2); /* stack tidy, remove .fn table */
if (lua_isfunction(L,-1)) /* note: whether it's a C function or lua function */
{ /* found it so return the fn & let lua call it */
lua_remove(L,-2); /* stack tidy, remove metatable */
return 1;
}
lua_pop(L,1); /* remove whatever was there */
return 0;
}
SWIGINTERN int SWIG_Lua_namespace_set(lua_State *L)
{
/* there should be 3 params passed in
(1) table (not the meta table)
(2) string name of the attribute
(3) any for the new value
*/
assert(lua_istable(L,1));
lua_getmetatable(L,1); /* get the meta table */
assert(lua_istable(L,-1));
SWIG_Lua_get_table(L,".set"); /* find the .set table */
if (lua_istable(L,-1))
{
/* look for the key in the .set table */
lua_pushvalue(L,2); /* key */
lua_rawget(L,-2);
if (lua_iscfunction(L,-1))
{ /* found it so call the fn & return its value */
lua_pushvalue(L,3); /* value */
lua_call(L,1,0);
return 0;
}
lua_pop(L,1); /* remove the value */
}
lua_pop(L,1); /* remove the value .set table */
lua_pop(L,1); /* remote metatable */
assert(lua_gettop(L) == 3); // TODO: REMOVE
lua_rawset(L,-3);
return 0;
}
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA) /* In elua this is useless */
SWIGINTERN void SWIG_Lua_InstallConstants(lua_State *L, swig_lua_const_info constants[]); /* forward declaration */
SWIGINTERN void SWIG_Lua_add_variable(lua_State *L,const char *name,lua_CFunction getFn,lua_CFunction setFn); /* forward declaration */
SWIGINTERN void SWIG_Lua_class_register(lua_State *L,swig_lua_class *clss);
/* helper function - register namespace methods and attributes into namespace */
SWIGINTERN int SWIG_Lua_add_namespace_details(lua_State *L, swig_lua_namespace *ns)
{
int i = 0;
/* There must be namespace table (not metatable) at the top of the stack */
assert(lua_istable(L,-1));
SWIG_Lua_InstallConstants(L, ns->ns_constants);
/* add methods to the namespace/module table */
for(i=0;ns->ns_methods[i].name;i++){
SWIG_Lua_add_function(L,ns->ns_methods[i].name,ns->ns_methods[i].func);
}
lua_getmetatable(L,-1);
/* add fns */
for(i=0;ns->ns_attributes[i].name;i++){
SWIG_Lua_add_variable(L,ns->ns_attributes[i].name,ns->ns_attributes[i].getmethod,ns->ns_attributes[i].setmethod);
}
/* clear stack - remove metatble */
lua_pop(L,1);
return 0;
}
/* Register all classes in the namespace
*/
SWIGINTERN void SWIG_Lua_add_namespace_classes(lua_State *L, swig_lua_namespace *ns)
{
/* There must be module/namespace table at the top of the stack */
assert(lua_istable(L,-1));
swig_lua_class **classes = ns->ns_classes;
if( classes != 0 ) {
while(*classes != 0) {
SWIG_Lua_class_register(L, *classes);
classes++;
}
}
}
/* helper function. creates namespace table and add it to module table
if 'reg' is true, then will register namespace table to parent one (must be on top of the stack
when function is called)
Function always returns newly registered table on top of the stack
*/
SWIGINTERN int SWIG_Lua_namespace_register(lua_State *L, swig_lua_namespace *ns, int reg)
{
int begin = lua_gettop(L);
assert(lua_istable(L,-1)); /* just in case. This is supposed to be module table or parent namespace table */
lua_checkstack(L,5);
lua_newtable(L); /* namespace itself */
lua_newtable(L); /* metatable for namespace */
/* add a table called ".get" */
lua_pushstring(L,".get");
lua_newtable(L);
lua_rawset(L,-3);
/* add a table called ".set" */
lua_pushstring(L,".set");
lua_newtable(L);
lua_rawset(L,-3);
/* add a table called ".fn" */
lua_pushstring(L,".fn");
lua_newtable(L);
lua_rawset(L,-3);
/* add accessor fns for using the .get,.set&.fn */
SWIG_Lua_add_function(L,"__index",SWIG_Lua_namespace_get);
SWIG_Lua_add_function(L,"__newindex",SWIG_Lua_namespace_set);
lua_setmetatable(L,-2); /* set metatable */
/* Register all functions, variables etc */
SWIG_Lua_add_namespace_details(L,ns);
/* Register classes */
SWIG_Lua_add_namespace_classes(L,ns);
swig_lua_namespace **sub_namespace = ns->ns_namespaces;
if( sub_namespace != 0) {
while(*sub_namespace != 0) {
SWIG_Lua_namespace_register(L, *sub_namespace, 1);
lua_pop(L,1); /* removing sub-namespace table */
sub_namespace++;
}
}
if (reg) {
lua_pushstring(L,ns->name);
lua_pushvalue(L,-2);
lua_rawset(L,-4); /* add namespace to module table */
}
assert(lua_gettop(L) == begin+1);
}
#endif /* SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA */
/* -----------------------------------------------------------------------------
* global variable support code: classes
* ----------------------------------------------------------------------------- */
SWIGINTERN void SWIG_Lua_get_class_metatable(lua_State *L,const char *cname);
/* Macroses for iteration among class bases */
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA)
#define SWIG_LUA_INIT_BASE_SEARCH(bases_count)\
SWIG_Lua_get_table(L,".bases");\
assert(lua_istable(L,-1));\
bases_count = lua_rawlen(L,-1);\
int bases_table = lua_gettop(L);
#define SWIG_LUA_GET_BASE_METATABLE(i,base_swig_type, valid)\
lua_rawgeti(L,bases_table,i+1);\
base_swig_type = 0;\
if(lua_isnil(L,-1)) {\
valid = 0;\
lua_pop(L,1);\
} else\
valid = 1;
#else /* en elua .bases table doesn't exist. Use table from swig_lua_class */
#define SWIG_LUA_INIT_BASE_SEARCH(bases_count)\
swig_module_info *module=SWIG_GetModule(L);\
swig_lua_class **bases= ((swig_lua_class*)(swig_type->clientdata))->bases;\
const char **base_names= ((swig_lua_class*)(swig_type->clientdata))->base_names;\
bases_count = 0;\
for(;base_names[bases_count];bases_count++);/* get length of bases */
#define SWIG_LUA_GET_BASE_METATABLE(i,base_swig_type, valid)\
swig_lua_class *base_class = bases[i];\
if(!base_class)\
valid = 0;\
else {\
valid = 1;\
SWIG_Lua_get_class_metatable(L,base_class->fqname);\
base_swig_type = SWIG_TypeQueryModule(module,module,base_class->fqname);\
}
#endif
typedef int (*swig_lua_base_iterator_func)(lua_State*,swig_type_info*, int, int *ret);
SWIGINTERN int SWIG_Lua_iterate_bases(lua_State *L, swig_type_info *swig_type, int first_arg, swig_lua_base_iterator_func func, int *const ret)
{
/* first_arg - position of the object in stack. Everything that is above are arguments
* and is passed to every evocation of the func */
int last_arg = lua_gettop(L);/* position of last argument */
lua_getmetatable(L,first_arg);
int original_metatable = last_arg + 1;
int bases_count;
SWIG_LUA_INIT_BASE_SEARCH(bases_count);
int result = SWIG_ERROR;
if(ret) *ret = 0;
if(bases_count>0)
{
int i;
int j;
int subcall_first_arg = lua_gettop(L) + 1;/* Here a copy of first_arg and arguments begin */
int valid = 1;
for(j=first_arg;j<=last_arg;j++)
lua_pushvalue(L,j);
int subcall_last_arg = lua_gettop(L);
swig_type_info *base_swig_type = 0;
/* Trick: temporaly replacing original metatable
* with metatable for base class and call getter */
for(i=0;i<bases_count;i++) {
SWIG_LUA_GET_BASE_METATABLE(i,base_swig_type,valid);
if(!valid)
continue;
assert(lua_isuserdata(L, subcall_first_arg));
assert(lua_istable(L,-1));
lua_setmetatable(L,subcall_first_arg); /* Set new metatable */
assert(lua_gettop(L) == subcall_last_arg);
result = func(L, base_swig_type,subcall_first_arg, ret); /* Forward call */
if(ret) assert(lua_gettop(L) == subcall_last_arg + *ret); // TODO: REMOVE
if(result != SWIG_ERROR) {
break;
}
}
/* Return original metatable back */
lua_pushvalue(L,original_metatable);
lua_setmetatable(L,first_arg);
/* Clear - remove everything between last_arg and subcall_last_arg including */
const int to_remove = subcall_last_arg - last_arg;
for(j=0;j<to_remove;j++)
lua_remove(L,last_arg+1);
if(ret) assert(lua_gettop(L) == last_arg + *ret); // TODO: REMOVE
} else {
/* Remove everything after last_arg */
lua_pop(L, lua_gettop(L) - last_arg);
}
if(ret) assert(lua_gettop(L) == last_arg + *ret);
return result;
}
/* the class.get method helper, performs the lookup of class attributes
* It returns error code. Number of function return values is passed inside 'ret'
* first_arg is not used in this function because function always has 2 arguments.
*/
SWIGINTERN int SWIG_Lua_class_do_get(lua_State *L, swig_type_info *type, int first_arg, int *ret)
{
/* there should be 2 params passed in
(1) userdata (not the meta table)
(2) string name of the attribute
*/
int substack_start = lua_gettop(L)-2;
assert(first_arg == substack_start+1);
lua_checkstack(L,5);
assert(lua_isuserdata(L,-2)); /* just in case */
lua_getmetatable(L,-2); /* get the meta table */
assert(lua_istable(L,-1)); /* just in case */
// TODO: REMOVE
//SWIG_Lua_get_table(L,".type");
//printf("class %s get %s\n", lua_tostring(L,-1), lua_tostring(L,substack_start+2));
//lua_pop(L,1);
// END OF REMOVE
SWIG_Lua_get_table(L,".get"); /* find the .get table */
assert(lua_istable(L,-1)); /* just in case */
/* look for the key in the .get table */
lua_pushvalue(L,substack_start+2); /* key */
lua_rawget(L,-2);
lua_remove(L,-2); /* stack tidy, remove .get table */
if (lua_iscfunction(L,-1))
{ /* found it so call the fn & return its value */
lua_pushvalue(L,substack_start+1); /* the userdata */
lua_call(L,1,1); /* 1 value in (userdata),1 out (result) */
lua_remove(L,-2); /* stack tidy, remove metatable */
if(ret) *ret = 1;
return SWIG_OK;
}
lua_pop(L,1); /* remove whatever was there */
/* ok, so try the .fn table */
SWIG_Lua_get_table(L,".fn"); /* find the .fn table */
assert(lua_istable(L,-1)); /* just in case */
lua_pushvalue(L,substack_start+2); /* key */
lua_rawget(L,-2); /* look for the fn */
lua_remove(L,-2); /* stack tidy, remove .fn table */
if (lua_isfunction(L,-1)) /* note: if its a C function or lua function */
{ /* found it so return the fn & let lua call it */
lua_remove(L,-2); /* stack tidy, remove metatable */
if(ret) *ret = 1;
return SWIG_OK;
}
lua_pop(L,1); /* remove whatever was there */
/* NEW: looks for the __getitem() fn
this is a user provided get fn */
SWIG_Lua_get_table(L,"__getitem"); /* find the __getitem fn */
if (lua_iscfunction(L,-1)) /* if its there */
{ /* found it so call the fn & return its value */
lua_pushvalue(L,substack_start+1); /* the userdata */
lua_pushvalue(L,substack_start+2); /* the parameter */
lua_call(L,2,1); /* 2 value in (userdata),1 out (result) */
lua_remove(L,-2); /* stack tidy, remove metatable */
if(ret) *ret = 1;
return SWIG_OK;
}
lua_pop(L,1);
/* Remove the metatable */
lua_pop(L,1);
/* Search in base classes */
assert(lua_gettop(L) == substack_start + 2); // TODO: REMOVE
/* TODO: REMOVE
#ifdef SWIG_LUA_SQUASH_BASES
if(ret) *ret = 0;
return SWIG_ERROR; // TODO:ERROR:FIX:REMOVE!!!!
//#warning REMOVE REMOVE REMOVE
#endif
END OF REMOVE */
//printf("failed, searching bases\n"); // TODO: REMOVE
int bases_search_result = SWIG_Lua_iterate_bases(L,type,substack_start+1,SWIG_Lua_class_do_get,ret);
if(ret) assert(lua_gettop(L) == substack_start + 2 + *ret); // TODO: REMOVE
// TODO: REMOVE
if(bases_search_result != SWIG_OK) {
//printf("failed.\n");
}
// END OF REMOVE
return bases_search_result; /* sorry not known */
}
/* the class.get method, performs the lookup of class attributes
*/
SWIGINTERN int SWIG_Lua_class_get(lua_State *L)
{
/* there should be 2 params passed in
(1) userdata (not the meta table)
(2) string name of the attribute
*/
assert(lua_isuserdata(L,1));
swig_lua_userdata *usr=(swig_lua_userdata*)lua_touserdata(L,1); /* get data */
swig_type_info *type = usr->type;
int ret = 0;
int result = SWIG_Lua_class_do_get(L,type,1,&ret);
if(result == SWIG_OK)
return ret;
return 0;
}
/* helper for the class.set method, performs the lookup of class attributes
* It returns error code. Number of function return values is passed inside 'ret'
*/
SWIGINTERN int SWIG_Lua_class_do_set(lua_State *L, swig_type_info *type, int first_arg, int *ret)
{
/* there should be 3 params passed in
(1) table (not the meta table)
(2) string name of the attribute
(3) any for the new value
*/
int substack_start = lua_gettop(L) - 3;
lua_checkstack(L,5);
assert(lua_isuserdata(L,substack_start+1)); /* just in case */
lua_getmetatable(L,substack_start+1); /* get the meta table */
assert(lua_istable(L,-1)); /* just in case */
if(ret) *ret = 0; /* it is setter - number of return values is always 0 */
SWIG_Lua_get_table(L,".set"); /* find the .set table */
if (lua_istable(L,-1))
{
/* look for the key in the .set table */
lua_pushvalue(L,substack_start+2); /* key */
lua_rawget(L,-2);
lua_remove(L,-2); /* tidy stack, remove .set table */
if (lua_iscfunction(L,-1))
{ /* found it so call the fn & return its value */
lua_pushvalue(L,substack_start+1); /* userdata */
lua_pushvalue(L,substack_start+3); /* value */
lua_call(L,2,0);
lua_remove(L,substack_start+4); /*remove metatable*/
return SWIG_OK;
}
lua_pop(L,1); /* remove the value */
} else {
lua_pop(L,1); /* remove the answer for .set table request*/
}
assert(lua_gettop(L) == substack_start + 4); // TODO: REMOVE
/* NEW: looks for the __setitem() fn
this is a user provided set fn */
SWIG_Lua_get_table(L,"__setitem"); /* find the fn */
if (lua_iscfunction(L,-1)) /* if its there */
{ /* found it so call the fn & return its value */
lua_pushvalue(L,substack_start+1); /* the userdata */
lua_pushvalue(L,substack_start+2); /* the parameter */
lua_pushvalue(L,substack_start+3); /* the value */
lua_call(L,3,0); /* 3 values in ,0 out */
lua_remove(L,-2); /* stack tidy, remove metatable */
return SWIG_OK;
}
lua_pop(L,1); /* remove value */
assert(lua_gettop(L) == substack_start + 4); // TODO: REMOVE
lua_pop(L,1); /* remove metatable */
/* Search among bases */
assert(lua_gettop(L) == first_arg+2); // TODO: REMOVE
int bases_search_result = SWIG_Lua_iterate_bases(L,type,first_arg,SWIG_Lua_class_do_set,ret);
if(ret) assert(*ret == 0);
assert(lua_gettop(L) == substack_start + 3);
return bases_search_result;
}
/* This is actuall method exported to Lua. It calls SWIG_Lua_class_do_set and correctly
* handlers return value
*/
SWIGINTERN int SWIG_Lua_class_set(lua_State *L)
{
/* there should be 3 params passed in
(1) table (not the meta table)
(2) string name of the attribute
(3) any for the new value
*/
assert(lua_isuserdata(L,1));
swig_lua_userdata *usr=(swig_lua_userdata*)lua_touserdata(L,1); /* get data */
swig_type_info *type = usr->type;
int ret = 0;
int result = SWIG_Lua_class_do_set(L,type,1,&ret);
if(result != SWIG_OK) {
SWIG_Lua_pushferrstring(L,"Assignment not possible. No setter/member with this name. For custom assignments implement __setitem method");
lua_error(L);
} else {
assert(ret==0);
return 0;
}
}
/* the class.destruct method called by the interpreter */
SWIGINTERN int SWIG_Lua_class_destruct(lua_State *L)
{
/* there should be 1 params passed in
(1) userdata (not the meta table) */
swig_lua_userdata *usr;
swig_lua_class *clss;
assert(lua_isuserdata(L,-1)); /* just in case */
usr=(swig_lua_userdata*)lua_touserdata(L,-1); /* get it */
/* if must be destroyed & has a destructor */
if (usr->own) /* if must be destroyed */
{
clss=(swig_lua_class*)usr->type->clientdata; /* get the class */
if (clss && clss->destructor) /* there is a destroy fn */
{
clss->destructor(usr->ptr); /* bye bye */
}
}
return 0;
}
/* the class.__tostring method called by the interpreter and print */
SWIGINTERN int SWIG_Lua_class_tostring(lua_State *L)
{
/* there should be 1 param passed in
(1) userdata (not the metatable) */
assert(lua_isuserdata(L,1)); /* just in case */
unsigned long userData = (unsigned long)lua_touserdata(L,1); /* get the userdata address for later */
lua_getmetatable(L,1); /* get the meta table */
assert(lua_istable(L,-1)); /* just in case */
lua_getfield(L, -1, ".type");
const char *className = lua_tostring(L, -1);
char output[256];
snprintf(output, 255, "<%s userdata: %lX>", className, userData);
lua_pushstring(L, (const char*)output);
return 1;
}
/* to manually disown some userdata */
SWIGINTERN int SWIG_Lua_class_disown(lua_State *L)
{
/* there should be 1 params passed in
(1) userdata (not the meta table) */
swig_lua_userdata *usr;
assert(lua_isuserdata(L,-1)); /* just in case */
usr=(swig_lua_userdata*)lua_touserdata(L,-1); /* get it */
usr->own = 0; /* clear our ownership */
return 0;
}
/* gets the swig class registry (or creates it) */
SWIGINTERN void SWIG_Lua_get_class_registry(lua_State *L)
{
/* add this all into the swig registry: */
lua_pushstring(L,"SWIG");
lua_rawget(L,LUA_REGISTRYINDEX); /* get the registry */
if (!lua_istable(L,-1)) /* not there */
{ /* must be first time, so add it */
lua_pop(L,1); /* remove the result */
lua_pushstring(L,"SWIG");
lua_newtable(L);
lua_rawset(L,LUA_REGISTRYINDEX);
/* then get it */
lua_pushstring(L,"SWIG");
lua_rawget(L,LUA_REGISTRYINDEX);
}
}
/* helper fn to get the classes metatable from the register */
SWIGINTERN void SWIG_Lua_get_class_metatable(lua_State *L,const char *cname)
{
SWIG_Lua_get_class_registry(L); /* get the registry */
lua_pushstring(L,cname); /* get the name */
lua_rawget(L,-2); /* get it */
lua_remove(L,-2); /* tidy up (remove registry) */
}
/* set up the base classes pointers.
Each class structure has a list of pointers to the base class structures.
This function fills them.
It cannot be done at compile time, as this will not work with hireachies
spread over more than one swig file.
Therefore it must be done at runtime, querying the SWIG type system.
*/
SWIGINTERN void SWIG_Lua_init_base_class(lua_State *L,swig_lua_class *clss)
{
int i=0;
swig_module_info *module=SWIG_GetModule(L);
for(i=0;clss->base_names[i];i++)
{
if (clss->bases[i]==0) /* not found yet */
{
/* lookup and cache the base class */
swig_type_info *info = SWIG_TypeQueryModule(module,module,clss->base_names[i]);
if (info) clss->bases[i] = (swig_lua_class *) info->clientdata;
}
}
}
#if defined(SWIG_LUA_SQUASH_BASES) && (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA)
/* Merges two tables */
SWIGINTERN int SWIG_Lua_merge_tables_by_index(lua_State *L, int target, int source)
{
/* iterating */
lua_pushnil(L);
while (lua_next(L,source) != 0) {
/* -1 - value, -2 - index */
/* have to copy to assign */
lua_pushvalue(L,-2); /* copy of index */
lua_pushvalue(L,-2); /* copy of value */
lua_rawset(L, target);
lua_pop(L,1);
/* only key is left */
}
}
/* Merges two tables with given name. original - index of target metatable, base - index of source metatable */
SWIGINTERN int SWIG_Lua_merge_tables(lua_State *L, const char* name, int original, int base)
{
int begin = lua_gettop(L); // TODO:REMOVE
/* push original[name], then base[name] */
lua_pushstring(L,name);
lua_rawget(L,original);
int original_table = lua_gettop(L);
lua_pushstring(L,name);
lua_rawget(L,base);
int base_table = lua_gettop(L);
SWIG_Lua_merge_tables_by_index(L, original_table, base_table);
/* clearing stack */
lua_pop(L,2);
assert(lua_gettop(L) == begin); // TODO: REMOVE
}
/* Function takes all symbols from base and adds it to derived class. It's just a helper*/
SWIGINTERN int SWIG_Lua_class_squash_base(lua_State *L, swig_lua_class *base_cls)
{
int begin = lua_gettop(L); // TODO:REMOVE
/* There is one parameter - original, i.e. 'derived' class metatable */
assert(lua_istable(L,-1));
int original = lua_gettop(L);
SWIG_Lua_get_class_metatable(L,base_cls->fqname);
int base = lua_gettop(L);
SWIG_Lua_merge_tables(L, ".fn", original, base );
SWIG_Lua_merge_tables(L, ".set", original, base );
SWIG_Lua_merge_tables(L, ".get", original, base );
lua_pop(L,1);
assert(lua_gettop(L) == begin); // TODO: REMOVE
}
/* Function squashes all symbols from 'clss' bases into itself */
SWIGINTERN int SWIG_Lua_class_squash_bases(lua_State *L, swig_lua_class *clss)
{
int begin = lua_gettop(L); // TODO: REMOVE
int i;
SWIG_Lua_get_class_metatable(L,clss->fqname);
for(i=0;clss->base_names[i];i++)
{
if (clss->bases[i]==0) /* Somehow it's not found. Skip it */
continue;
/* Thing is: all bases are already registered. Thus they have already executed
* this function. So we just need to squash them into us, because their bases
* are already squashed into them. No need for recursion here!
*/
SWIG_Lua_class_squash_base(L, clss->bases[i]);
}
lua_pop(L,1); /*tidy stack*/
assert(lua_gettop(L) == begin); // TODO: REMOVE
}
#endif
#if (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA) /* In elua this is useless */
/* helper add a variable to a registered class */
SWIGINTERN void SWIG_Lua_add_variable(lua_State *L,const char *name,lua_CFunction getFn,lua_CFunction setFn)
{
assert(lua_istable(L,-1)); /* just in case */
SWIG_Lua_get_table(L,".get"); /* find the .get table */
assert(lua_istable(L,-1)); /* just in case */
SWIG_Lua_add_function(L,name,getFn);
lua_pop(L,1); /* tidy stack (remove table) */
if (setFn)
{
SWIG_Lua_get_table(L,".set"); /* find the .set table */
assert(lua_istable(L,-1)); /* just in case */
SWIG_Lua_add_function(L,name,setFn);
lua_pop(L,1); /* tidy stack (remove table) */
}
}
/* helper to recursively add class static details (static attributes, operations and constants) */
SWIGINTERN void SWIG_Lua_add_class_static_details(lua_State *L, swig_lua_class *clss)
{
int i = 0;
/* The class namespace table must be on the top of the stack */
assert(lua_istable(L,-1));
/* call all the base classes first: we can then override these later: */
for(i=0;clss->bases[i];i++)
{
SWIG_Lua_add_class_static_details(L,clss->bases[i]);
}
SWIG_Lua_add_namespace_details(L, clss->cls_static);
}
/* helper to recursively add class details (attributes & operations) */
SWIGINTERN void SWIG_Lua_add_class_instance_details(lua_State *L,swig_lua_class *clss)
{
int i;
/* Add bases to .bases table */
SWIG_Lua_get_table(L,".bases");
assert(lua_istable(L,-1)); /* just in case */
int bases_count = 0;
for(i=0;clss->bases[i];i++)
{
SWIG_Lua_get_class_metatable(L,clss->bases[i]->fqname);
/* Base class must be already registered */
assert(lua_istable(L,-1));
lua_rawseti(L,-2,i+1); /* In lua indexing starts from 1 */
bases_count++;
}
assert(lua_rawlen(L,-1) == bases_count);
lua_pop(L,1); /* remove .bases table */
/* add attributes */
for(i=0;clss->attributes[i].name;i++){
SWIG_Lua_add_variable(L,clss->attributes[i].name,clss->attributes[i].getmethod,clss->attributes[i].setmethod);
}
/* add methods to the metatable */
SWIG_Lua_get_table(L,".fn"); /* find the .fn table */
assert(lua_istable(L,-1)); /* just in case */
for(i=0;clss->methods[i].name;i++){
SWIG_Lua_add_function(L,clss->methods[i].name,clss->methods[i].func);
}
lua_pop(L,1); /* tidy stack (remove table) */
/* add operator overloads
these look ANY method which start with "__" and assume they
are operator overloads & add them to the metatable
(this might mess up if someone defines a method __gc (the destructor)*/
for(i=0;clss->methods[i].name;i++){
if (clss->methods[i].name[0]=='_' && clss->methods[i].name[1]=='_'){
SWIG_Lua_add_function(L,clss->methods[i].name,clss->methods[i].func);
}
}
}
/* Register class static methods,attributes etc as well as constructor proxy */
SWIGINTERN void SWIG_Lua_class_register_static(lua_State *L, swig_lua_class *clss)
{
int begin = lua_gettop(L);
lua_checkstack(L,5); /* just in case */
assert(lua_istable(L,-1)); /* just in case */
assert(strcmp(clss->name, clss->cls_static->name) == 0); /* in class those 2 must be equal */
SWIG_Lua_namespace_register(L,clss->cls_static, 1);
assert(lua_istable(L,-1)); /* just in case */
/* add its constructor to module with the name of the class
so you can do MyClass(...) as well as new_MyClass(...)
BUT only if a constructor is defined
(this overcomes the problem of pure virtual classes without constructors)*/
if (clss->constructor)
{
lua_getmetatable(L,-1);
assert(lua_istable(L,-1)); /* just in case */
SWIG_Lua_add_function(L,"__call", clss->constructor);
lua_pop(L,1);
}
assert(lua_istable(L,-1)); /* just in case */
SWIG_Lua_add_class_static_details(L, clss);
/* clear stack */
lua_pop(L,1);
assert( lua_gettop(L) == begin );
}
/* performs the instance(non-static) class registration process. Metatable for class is created
* and added to the class registry.
*/
SWIGINTERN void SWIG_Lua_class_register_instance(lua_State *L,swig_lua_class *clss)
{
int begin = lua_gettop(L);
/* if name already there (class is already registered) then do nothing */
SWIG_Lua_get_class_registry(L); /* get the registry */
lua_pushstring(L,clss->fqname); /* get the name */
lua_rawget(L,-2);
if(!lua_isnil(L,-1)) {
lua_pop(L,2);
assert(lua_gettop(L)==begin);
return;
}
lua_pop(L,2); /* tidy stack */
/* Recursively initialize all bases */
int i = 0;
for(i=0;clss->bases[i];i++)
{
SWIG_Lua_class_register_instance(L,clss->bases[i]);
}
/* Again, get registry and push name */
SWIG_Lua_get_class_registry(L); /* get the registry */
lua_pushstring(L,clss->fqname); /* get the name */
lua_newtable(L); /* create the metatable */
#if defined(SWIG_LUA_SQUASH_BASES) && (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA)
/* If squashing is requested, then merges all bases metatable into this one.
* It would get us all special methods: __getitem, __add etc.
* This would set .fn, .type, and other .xxx incorrectly, but we will overwrite it right away
*/
int squash_begin = lua_gettop(L); // TODO:REMOVE
int new_metatable_index = lua_absindex(L,-1);
for(i=0;clss->bases[i];i++)
{
SWIG_Lua_get_class_metatable(L,clss->bases[i]->fqname);
int base_metatable = lua_absindex(L,-1);
SWIG_Lua_merge_tables_by_index(L,new_metatable_index, base_metatable);
lua_pop(L,1);
}
assert(lua_gettop(L) == squash_begin); // TODO: REMOVE
/* And now we will overwrite all incorrectly set data */
#endif
/* add string of class name called ".type" */
lua_pushstring(L,".type");
lua_pushstring(L,clss->fqname);
lua_rawset(L,-3);
/* add a table called bases */
lua_pushstring(L,".bases");
lua_newtable(L);
lua_rawset(L,-3);
/* add a table called ".get" */
lua_pushstring(L,".get");
lua_newtable(L);
lua_rawset(L,-3);
/* add a table called ".set" */
lua_pushstring(L,".set");
lua_newtable(L);
lua_rawset(L,-3);
/* add a table called ".fn" */
lua_pushstring(L,".fn");
lua_newtable(L);
/* add manual disown method */
SWIG_Lua_add_function(L,"__disown",SWIG_Lua_class_disown);
lua_rawset(L,-3);
/* add accessor fns for using the .get,.set&.fn */
SWIG_Lua_add_function(L,"__index",SWIG_Lua_class_get);
SWIG_Lua_add_function(L,"__newindex",SWIG_Lua_class_set);
SWIG_Lua_add_function(L,"__gc",SWIG_Lua_class_destruct);
/* add tostring method for better output */
SWIG_Lua_add_function(L,"__tostring",SWIG_Lua_class_tostring);
/* add it */
lua_rawset(L,-3); /* metatable into registry */
lua_pop(L,1); /* tidy stack (remove registry) */
assert(lua_gettop(L)==begin);
#if defined(SWIG_LUA_SQUASH_BASES) && (SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA)
/* Now merge all symbols from .fn, .set, .get etc from bases to our tables */
SWIG_Lua_class_squash_bases(L,clss);
#endif
SWIG_Lua_get_class_metatable(L,clss->fqname);
SWIG_Lua_add_class_instance_details(L,clss); /* recursive adding of details (atts & ops) */
lua_pop(L,1); /* tidy stack (remove class metatable) */
assert( lua_gettop(L) == begin );
}
SWIGINTERN void SWIG_Lua_class_register(lua_State *L,swig_lua_class *clss)
{
assert(lua_istable(L,-1)); /* This is table(module or namespace) where class will be added */
SWIG_Lua_class_register_instance(L,clss);
SWIG_Lua_class_register_static(L,clss);
/* Add links from static part to instance part and vice versa */
/* [SWIG registry] [Module]
* "MyClass" ----> [MyClass metatable] <===== "MyClass" -+> [static part]
* ".get" ----> ... | | getmetatable()----|
* ".set" ----> ... | | |
* ".static" --------------)----------------/ [static part metatable]
* | ".get" --> ...
* | ".set" --> ....
* |=============================== ".instance"
*/
int begin = lua_gettop(L);
lua_pushstring(L,clss->cls_static->name);
lua_rawget(L,-2); /* get class static table */
assert(lua_istable(L,-1));
lua_getmetatable(L,-1);
assert(lua_istable(L,-1)); /* get class static metatable */
lua_pushstring(L,".instance"); /* prepare key */
SWIG_Lua_get_class_metatable(L,clss->fqname); /* get class metatable */
assert(lua_istable(L,-1));
lua_pushstring(L,".static"); /* prepare key */
lua_pushvalue(L, -4); /* push static class TABLE */
assert(lua_istable(L,-1));
lua_rawset(L,-3); /* assign static class table(!NOT metatable) as ".static" member of class metatable */
lua_rawset(L,-3); /* assign class metatable as ".instance" member of class static METATABLE */
lua_pop(L,2);
assert(lua_gettop(L) == begin);
}
#endif /* SWIG_LUA_TARGET == SWIG_LUA_FLAVOR_LUA */
/* -----------------------------------------------------------------------------
* Class/structure conversion fns
* ----------------------------------------------------------------------------- */
/* helper to add metatable to new lua object */
SWIGINTERN void _SWIG_Lua_AddMetatable(lua_State *L,swig_type_info *type)
{
if (type->clientdata) /* there is clientdata: so add the metatable */
{
SWIG_Lua_get_class_metatable(L,((swig_lua_class*)(type->clientdata))->fqname);
if (lua_istable(L,-1))
{
lua_setmetatable(L,-2);
}
else
{
lua_pop(L,1);
}
}
}
/* pushes a new object into the lua stack */
SWIGRUNTIME void SWIG_Lua_NewPointerObj(lua_State *L,void *ptr,swig_type_info *type, int own)
{
swig_lua_userdata *usr;
if (!ptr){
lua_pushnil(L);
return;
}
usr=(swig_lua_userdata*)lua_newuserdata(L,sizeof(swig_lua_userdata)); /* get data */
usr->ptr=ptr; /* set the ptr */
usr->type=type;
usr->own=own;
#if (SWIG_LUA_TARGET != SWIG_LUA_FLAVOR_ELUAC)
_SWIG_Lua_AddMetatable(L,type); /* add metatable */
#endif
}
/* takes a object from the lua stack & converts it into an object of the correct type
(if possible) */
SWIGRUNTIME int SWIG_Lua_ConvertPtr(lua_State *L,int index,void **ptr,swig_type_info *type,int flags)
{
swig_lua_userdata *usr;
swig_cast_info *cast;
if (lua_isnil(L,index)){*ptr=0; return SWIG_OK;} /* special case: lua nil => NULL pointer */
usr=(swig_lua_userdata*)lua_touserdata(L,index); /* get data */
if (usr)
{
if (flags & SWIG_POINTER_DISOWN) /* must disown the object */
{
usr->own=0;
}
if (!type) /* special cast void*, no casting fn */
{
*ptr=usr->ptr;
return SWIG_OK; /* ok */
}
cast=SWIG_TypeCheckStruct(usr->type,type); /* performs normal type checking */
if (cast)
{
int newmemory = 0;
*ptr=SWIG_TypeCast(cast,usr->ptr,&newmemory);
assert(!newmemory); /* newmemory handling not yet implemented */
return SWIG_OK; /* ok */
}
}
return SWIG_ERROR; /* error */
}
SWIGRUNTIME void* SWIG_Lua_MustGetPtr(lua_State *L,int index,swig_type_info *type,int flags,
int argnum,const char *func_name){
void *result;
if (!SWIG_IsOK(SWIG_ConvertPtr(L,index,&result,type,flags))){
luaL_error (L,"Error in %s, expected a %s at argument number %d\n",
func_name,(type && type->str)?type->str:"void*",argnum);
}
return result;
}
/* pushes a packed userdata. user for member fn pointers only */
SWIGRUNTIME void SWIG_Lua_NewPackedObj(lua_State *L,void *ptr,size_t size,swig_type_info *type)
{
swig_lua_rawdata *raw;
assert(ptr); /* not acceptable to pass in a NULL value */
raw=(swig_lua_rawdata*)lua_newuserdata(L,sizeof(swig_lua_rawdata)-1+size); /* alloc data */
raw->type=type;
raw->own=0;
memcpy(raw->data,ptr,size); /* copy the data */
_SWIG_Lua_AddMetatable(L,type); /* add metatable */
}
/* converts a packed userdata. user for member fn pointers only */
SWIGRUNTIME int SWIG_Lua_ConvertPacked(lua_State *L,int index,void *ptr,size_t size,swig_type_info *type)
{
swig_lua_rawdata *raw;
raw=(swig_lua_rawdata*)lua_touserdata(L,index); /* get data */
if (!raw) return SWIG_ERROR; /* error */
if (type==0 || type==raw->type) /* void* or identical type */
{
memcpy(ptr,raw->data,size); /* copy it */
return SWIG_OK; /* ok */
}
return SWIG_ERROR; /* error */
}
/* a function to get the typestring of a piece of data */
SWIGRUNTIME const char *SWIG_Lua_typename(lua_State *L, int tp)
{
swig_lua_userdata *usr;
if (lua_isuserdata(L,tp))
{
usr=(swig_lua_userdata*)lua_touserdata(L,tp); /* get data */
if (usr && usr->type && usr->type->str)
return usr->type->str;
return "userdata (unknown type)";
}
return lua_typename(L,lua_type(L,tp));
}
/* lua callable function to get the userdata's type */
SWIGRUNTIME int SWIG_Lua_type(lua_State *L)
{
lua_pushstring(L,SWIG_Lua_typename(L,1));
return 1;
}
/* lua callable function to compare userdata's value
the issue is that two userdata may point to the same thing
but to lua, they are different objects */
SWIGRUNTIME int SWIG_Lua_equal(lua_State *L)
{
int result;
swig_lua_userdata *usr1,*usr2;
if (!lua_isuserdata(L,1) || !lua_isuserdata(L,2)) /* just in case */
return 0; /* nil reply */
usr1=(swig_lua_userdata*)lua_touserdata(L,1); /* get data */
usr2=(swig_lua_userdata*)lua_touserdata(L,2); /* get data */
/*result=(usr1->ptr==usr2->ptr && usr1->type==usr2->type); only works if type is the same*/
result=(usr1->ptr==usr2->ptr);
lua_pushboolean(L,result);
return 1;
}
/* -----------------------------------------------------------------------------
* global variable support code: class/struct typemap functions
* ----------------------------------------------------------------------------- */
#if ((SWIG_LUA_TARGET != SWIG_LUA_FLAVOR_ELUA) && (SWIG_LUA_TARGET != SWIG_LUA_FLAVOR_ELUAC))
/* Install Constants */
SWIGINTERN void
SWIG_Lua_InstallConstants(lua_State *L, swig_lua_const_info constants[]) {
int i;
for (i = 0; constants[i].type; i++) {
switch(constants[i].type) {
case SWIG_LUA_INT:
lua_pushstring(L,constants[i].name);
lua_pushnumber(L,(lua_Number)constants[i].lvalue);
lua_rawset(L,-3);
break;
case SWIG_LUA_FLOAT:
lua_pushstring(L,constants[i].name);
lua_pushnumber(L,(lua_Number)constants[i].dvalue);
lua_rawset(L,-3);
break;
case SWIG_LUA_CHAR:
lua_pushstring(L,constants[i].name);
lua_pushfstring(L,"%c",(char)constants[i].lvalue);
lua_rawset(L,-3);
break;
case SWIG_LUA_STRING:
lua_pushstring(L,constants[i].name);
lua_pushstring(L,(char *) constants[i].pvalue);
lua_rawset(L,-3);
break;
case SWIG_LUA_POINTER:
lua_pushstring(L,constants[i].name);
SWIG_NewPointerObj(L,constants[i].pvalue, *(constants[i]).ptype,0);
lua_rawset(L,-3);
break;
case SWIG_LUA_BINARY:
lua_pushstring(L,constants[i].name);
SWIG_NewMemberObj(L,constants[i].pvalue,constants[i].lvalue,*(constants[i]).ptype);
lua_rawset(L,-3);
break;
default:
break;
}
}
}
#endif
/* -----------------------------------------------------------------------------
* executing lua code from within the wrapper
* ----------------------------------------------------------------------------- */
#ifndef SWIG_DOSTRING_FAIL /* Allows redefining of error function */
#define SWIG_DOSTRING_FAIL(S) fprintf(stderr,"%s\n",S)
#endif
/* Executes a C string in Lua which is a really simple way of calling lua from C
Unfortunately lua keeps changing its APIs, so we need a conditional compile
In lua 5.0.X its lua_dostring()
In lua 5.1.X its luaL_dostring()
*/
SWIGINTERN int
SWIG_Lua_dostring(lua_State *L, const char *str) {
int ok,top;
if (str==0 || str[0]==0) return 0; /* nothing to do */
top=lua_gettop(L); /* save stack */
#if (defined(LUA_VERSION_NUM) && (LUA_VERSION_NUM>=501))
ok=luaL_dostring(L,str); /* looks like this is lua 5.1.X or later, good */
#else
ok=lua_dostring(L,str); /* might be lua 5.0.x, using lua_dostring */
#endif
if (ok!=0) {
SWIG_DOSTRING_FAIL(lua_tostring(L,-1));
}
lua_settop(L,top); /* restore the stack */
return ok;
}
#ifdef __cplusplus
}
#endif
/* ------------------------------ end luarun.swg ------------------------------ */
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