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/* -----------------------------------------------------------------------------
* SWIG API. Portion only visible from SWIG
* ----------------------------------------------------------------------------- */
/*
This file implements the internal macros of the 'SWIG API', which
are useful to implement all the SWIG target languages.
Basic preprocessor macros:
--------------------------
%arg(Arg) Safe argument wrap
%str(Arg) Stringify the argument
%begin_block Begin an execution block
%end_block End an execution block
%block(Block) Execute Block as an execution block
%define_as(Def, Val) Define 'Def' as 'Val', expanding Def and Val first
%ifcplusplus(V1, V2) if C++ Mode; then V1; else V2; fi
Casting Operations:
-------------------
SWIG provides the following casting macros, which implement the
corresponding C++ casting operations:
%const_cast(a, Type) const_cast<Type >(a)
%static_cast(a, Type) static_cast<Type >(a)
%reinterpret_cast(a, Type) reinterpret_cast<Type >(a)
%numeric_cast(a, Type) static_cast<Type >(a)
%as_voidptr(a) const_cast<void *>(static_cast<const void *>(a))
%as_voidptrptr(a) reinterpret_cast<void **>(a)
or their C unsafe versions. In C++ we use the safe version unless
SWIG_NO_CPLUSPLUS_CAST is defined (usually via the -nocppcast swig flag).
Memory allocation:
------------------
These allocation/freeing macros are safe to use in C or C++ and
dispatch the proper new/delete/delete[] or free/malloc calls as
needed.
%new_instance(Type) Allocate a new instance of given Type
%new_copy(value,Type) Allocate and initialize a new instance with 'value'
%new_array(size,Type) Allocate a new array with given size and Type and zero initialize
%new_copy_array(cptr,size,Type) Allocate and initialize a new array from 'cptr'
%delete(cptr) Delete an instance
%delete_array(cptr) Delete an array
Auxiliary loop macros:
----------------------
%formacro(Macro, Args...) or %formacro_1(Macro, Args...)
for i in Args
do
Macro($i)
done
%formacro_2(Macro2, Args...)
for i,j in Args
do
Macro2($i, $j)
done
Flags and conditional macros:
-----------------------------
%mark_flag(flag)
flag := True
%evalif(flag,expr)
if flag; then
expr
fi
%evalif_2(flag1 flag2,expr)
if flag1 and flag2; then
expr
fi
*/
/* -----------------------------------------------------------------------------
* Basic preprocessor macros
* ----------------------------------------------------------------------------- */
#define %arg(Arg...) Arg
#define %str(Arg) `Arg`
#ifndef %begin_block
# define %begin_block do {
#endif
#ifndef %end_block
# define %end_block } while(0)
#endif
#define %block(Block...) %begin_block Block; %end_block
/* define a new macro */
%define %define_as(Def, Val...)%#define Def Val %enddef
/* include C++ or else value */
%define %ifcplusplus(cppval, nocppval)
#ifdef __cplusplus
cppval
#else
nocppval
#endif
%enddef
/* insert the SWIGVERSION in the interface and the wrapper code */
#if SWIG_VERSION
%insert("header") {
%define_as(SWIGVERSION, SWIG_VERSION)
%#define SWIG_VERSION SWIGVERSION
}
#endif
/* -----------------------------------------------------------------------------
* Casting operators
* ----------------------------------------------------------------------------- */
#if defined(SWIG_NO_CPLUSPLUS_CAST)
/* Disable 'modern' cplusplus casting operators */
# if defined(SWIG_CPLUSPLUS_CAST)
# undef SWIG_CPLUSPLUS_CAST
# endif
#endif
#if defined(__cplusplus) && defined(SWIG_CPLUSPLUS_CAST)
# define %const_cast(a,Type...) const_cast< Type >(a)
# define %static_cast(a,Type...) static_cast< Type >(a)
# define %reinterpret_cast(a,Type...) reinterpret_cast< Type >(a)
# define %numeric_cast(a,Type...) static_cast< Type >(a)
#else /* C case */
# define %const_cast(a,Type...) (Type)(a)
# define %static_cast(a,Type...) (Type)(a)
# define %reinterpret_cast(a,Type...) (Type)(a)
# define %numeric_cast(a,Type...) (Type)(a)
#endif /* __cplusplus */
#define %as_voidptr(a) SWIG_as_voidptr(a)
#define %as_voidptrptr(a) SWIG_as_voidptrptr(a)
%insert("header") {
%define_as(SWIG_as_voidptr(a), %const_cast(%static_cast(a,const void *), void *))
%define_as(SWIG_as_voidptrptr(a), ((void)%as_voidptr(*a),%reinterpret_cast(a, void**)))
}
/* -----------------------------------------------------------------------------
* Allocating/freeing elements
* ----------------------------------------------------------------------------- */
#if defined(__cplusplus)
# define %new_instance(Type...) (new Type())
# define %new_copy(val,Type...) (new Type(%static_cast(val, const Type&)))
# define %new_array(size,Type...) (new Type[size]())
# define %new_copy_array(ptr,size,Type...) %reinterpret_cast(memcpy(new Type[size], ptr, sizeof(Type)*(size)), Type*)
# define %delete(cptr) delete cptr
# define %delete_array(cptr) delete[] cptr
#else /* C case */
# define %new_instance(Type...) (Type *)calloc(1,sizeof(Type))
# define %new_copy(val,Type...) (Type *)memcpy(%new_instance(Type),&val,sizeof(Type))
# define %new_array(size,Type...) (Type *)calloc(size, sizeof(Type))
# define %new_copy_array(ptr,size,Type...) (Type *)memcpy(malloc((size)*sizeof(Type)), ptr, sizeof(Type)*(size))
# define %delete(cptr) free((char*)cptr)
# define %delete_array(cptr) free((char*)cptr)
#endif /* __cplusplus */
/* -----------------------------------------------------------------------------
* SWIG names and mangling
* ----------------------------------------------------------------------------- */
#define %mangle(Type...) #@Type
#define %descriptor(Type...) SWIGTYPE_ ## #@Type
#define %string_name(Name) "SWIG_" %str(Name)
#define %symbol_name(Name, Type...) SWIG_ ## Name ## _ #@Type
#define %checkcode(Code) SWIG_TYPECHECK_ ## Code
/* -----------------------------------------------------------------------------
* Auxiliary loop macros
* ----------------------------------------------------------------------------- */
/* for loop for macro with one argument */
%define %_formacro_1(macro, arg1,...)macro(arg1)
#if #__VA_ARGS__ != "__fordone__"
%_formacro_1(macro, __VA_ARGS__)
#endif
%enddef
/* for loop for macro with one argument */
%define %formacro_1(macro,...)%_formacro_1(macro,__VA_ARGS__,__fordone__)%enddef
%define %formacro(macro,...)%_formacro_1(macro,__VA_ARGS__,__fordone__)%enddef
/* for loop for macro with two arguments */
%define %_formacro_2(macro, arg1, arg2, ...)macro(arg1, arg2)
#if #__VA_ARGS__ != "__fordone__"
%_formacro_2(macro, __VA_ARGS__)
#endif
%enddef
/* for loop for macro with two arguments */
%define %formacro_2(macro,...)%_formacro_2(macro, __VA_ARGS__, __fordone__)%enddef
/* -----------------------------------------------------------------------------
* SWIG flags
* ----------------------------------------------------------------------------- */
/*
mark a flag, ie, define a macro name but ignore it in
the interface.
the flag can be later used with %evalif
*/
%define %mark_flag(x) %define x 1 %enddef %enddef
/*
%evalif and %evalif_2 are use to evaluate or process
an expression if the given predicate is 'true' (1).
*/
%define %_evalif(_x,_expr)
#if _x == 1
_expr
#endif
%enddef
%define %_evalif_2(_x,_y,_expr)
#if _x == 1 && _y == 1
_expr
#endif
%enddef
%define %evalif(_x,_expr...) %_evalif(%arg(_x),%arg(_expr)) %enddef
%define %evalif_2(_x,_y,_expr...) %_evalif_2(%arg(_x),%arg(_y),%arg(_expr)) %enddef
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