U
    ڲg                     @   sD   d dl Z ddlmZ ddlmZ ddlmZ G dd deZdZ	dS )	    N   )modelVerificationError)_imp_emulationc                   @   s  e Zd ZdZdZdd Zdd Zdd Zd	d
 ZdnddZ	dd Z
dd Zdd ZdoddZdd Zdd Zdd Zdd Zdd  Zd!d" Zd#d$ Zd%d& Zd'd( ZeZeZeZeZeZd)d* Zd+d, Zd-d. ZeZd/d0 Z eZ!d1d2 Z"d3d4 Z#d5d6 Z$d7d8 Z%eZ&d9d: Z'd;d< Z(d=d> Z)d?d@ Z*dAdB Z+dCdD Z,dEdF Z-dGdH Z.eZ/dIdJ Z0dKdL Z1dMdN Z2dOdP Z3dpdSdTZ4dUdV Z5dWdX Z6eZ7eZ8eZ9dqdYdZZ:d[d\ Z;drd^d_Z<eZ=eZ>d`da Z?dbdc Z@ddde ZAeZBeZCeZDeZEdfdg ZFdhdi ZGeZHeZIdjdk ZJdldm ZKdS )sVCPythonEnginexTc                 C   s   || _ |j| _i | _i | _d S N)verifierffi_struct_pending_verification_types_of_builtin_functions)selfr
    r   4/tmp/pip-unpacked-wheel-lbi5ej3i/cffi/vengine_cpy.py__init__   s    zVCPythonEngine.__init__c                 C   s   d S r	   r   )r   kwdsr   r   r   patch_extension_kwds   s    z#VCPythonEngine.patch_extension_kwdsc                 C   sR   zt ||\}}}W n tk
r,   Y d S X |d k	r>|  |d |krNd S |S Nr   )impfind_moduleImportErrorclose)r   module_namepathZso_suffixesffilenamedescrr   r   r   r      s    zVCPythonEngine.find_modulec                 C   s   i | _ | d d S )NZcollecttype)
_typesdict	_generater   r   r   r   collect_types%   s    zVCPythonEngine.collect_types c                 C   s   | j |d  d S )N
)_fwrite)r   whatr   r   r   _prnt)   s    zVCPythonEngine._prntc                 C   s
   | j | S r	   )r   )r   typer   r   r   _gettypenum,   s    zVCPythonEngine._gettypenumc                 C   s8   t |tjr|jdkr4|| jkr4t| j}|| j|< d S )Nlong double)
isinstancer   PrimitiveTypenamer   len)r   tpnumr   r   r   _do_collect_type0   s    
zVCPythonEngine._do_collect_typec                 C   s  |    ddg| _| j}|t |  || jj |  | d |   |  |d | d |d |d |d |  | j }| jd }|d	 |  |d
 |d |d|  |d |d |d |d |d |  |d |d|  |d |d |d |d |d |d|f  |d |d |d |d |d |  |d |  |d |d|  |d |d |d|  |d |d  |d!|f  |d  |d" |d |  |d# d S )$Nz((void)lib,0)declz&static PyMethodDef _cffi_methods[] = {methodz3  {"_cffi_setup", _cffi_setup, METH_VARARGS, NULL},z)  {NULL, NULL, 0, NULL}    /* Sentinel */z};Fz#if PY_MAJOR_VERSION >= 3z.static struct PyModuleDef _cffi_module_def = {z  PyModuleDef_HEAD_INIT,z  "%s",z  NULL,z  -1,z  _cffi_methods,z  NULL, NULL, NULL, NULLZPyMODINIT_FUNCzPyInit_%s(void){z  PyObject *lib;z+  lib = PyModule_Create(&_cffi_module_def);z  if (lib == NULL)    return NULL;z#  if (%s < 0 || _cffi_init() < 0) {z    Py_DECREF(lib);  }z  return lib;}z#elsezinit%s(void)z+  lib = Py_InitModule("%s", _cffi_methods);z    return;z!  if (%s < 0 || _cffi_init() < 0)z	  return;z#endif)	r!   _chained_list_constantsr'   cffimod_headerr
   preambler   _generate_setup_customget_module_name)r   prntmodname	constantsr   r   r   write_source_to_f7   st    




z VCPythonEngine.write_source_to_fNc              
      sv  t   zttdrt }zvz6ttdr<|d k	r<t| t j	 jj
W n: tk
r } zdjj
|f }t|W 5 d }~X Y nX W 5 ttdrt| X W 5 t   X d tdd j D fddttD }ttjj|}G  fdd	d	t   }|t|rRd
d l}|dj	   jd|d j_j_|S )Ngetdlopenflagssetdlopenflagszimporting %r: %sZloadingc                 S   s   g | ]\}}||fqS r   r   ).0keyvaluer   r   r   
<listcomp>   s   z/VCPythonEngine.load_library.<locals>.<listcomp>c                    s   g | ]} | qS r   r   rC   i)
revmappingr   r   rF      s     c                       s&   e Zd ZZjZg Z fddZdS )z/VCPythonEngine.load_library.<locals>.FFILibraryc                    s    j t| j S r	   )	_cffi_dirlist__dict__r    )
FFILibraryr   r   __dir__   s    z7VCPythonEngine.load_library.<locals>.FFILibrary.__dir__N)__name__
__module____qualname__Z_cffi_python_moduler   Z	_cffi_ffirJ   rN   r   )rM   moduler   r   r   rM      s   rM   r   z0reimporting %r might overwrite older definitionsZloadedlibrary)r   acquire_lockrelease_lockhasattrsysrA   rB   Zload_dynamicr
   r<   Zmodulefilenamer   r   _loaddictr   itemsranger.   rK   mapr   _get_cached_btypeobjectZ_cffi_setupwarningswarnZ_cffi_original_ffir   Z_cffi_types_of_builtin_funcs)r   flagsZprevious_flagseerrorlstrT   r`   r   )rM   rR   rI   r   r   load_library   sB    



zVCPythonEngine.load_libraryc                 C   s$   dd | j jj D }|  |S )Nc                 S   s   g | ]\}\}}||fqS r   r   )rC   rD   r/   Zqualr   r   r   rF      s    
 z4VCPythonEngine._get_declarations.<locals>.<listcomp>)r   _parserZ_declarationsr[   sort)r   re   r   r   r   _get_declarations   s
    z VCPythonEngine._get_declarationsc                 C   s   |   D ]\}}|dd\}}zt| d||f }W n  tk
rV   td| Y nX z||| W q tk
r } zt||  W 5 d }~X Y qX qd S )N r   z_generate_cpy_%s_%sznot implemented in verify(): %r)ri   splitgetattrAttributeErrorr   	Exceptionr   attach_exception_info)r   	step_namer-   r/   kindrealnamer3   rc   r   r   r   r      s    
zVCPythonEngine._generatec           
      K   s~   |   D ]p\}}|dd\}}t| d||f }z||||f| W q tk
rv }	 zt|	|  W 5 d }	~	X Y qX qd S )Nrj   r   z
_%s_cpy_%s)ri   rk   rl   rn   r   ro   )
r   rR   rp   r   r-   r/   rq   rr   r3   rc   r   r   r   rY      s    zVCPythonEngine._loadc                 C   s   d S r	   r   r   r/   r-   r   r   r   _generate_nothing   s    z VCPythonEngine._generate_nothingc                 K   s   d S r	   r   r   r/   r-   rR   r   r   r   r   _loaded_noop   s    zVCPythonEngine._loaded_noopc                 C   s<  d}t |tjrf| r2|jdkr2d}d|j }n.| rDtdnd|d|jddf }d	}nt |tj	r| 
|||| d S t |tjtjfr| d
|| ||f  | d|  d S t |tjrd|d }d| | }d}nt|| d||||f  | d||d|f  | d|  d S )Nr"   _BoolZ_cffi_to_c_intz, %sz*not implemented in verify(): complex typesz(%s)_cffi_to_c_%srj   _z-1z6  if (_cffi_to_c((char *)&%s, _cffi_type(%d), %s) < 0)z    %s;z(%s)_cffi_to_c_pointerz, _cffi_type(%d)ZNULLz  %s = %s(%s%s);z'  if (%s == (%s)%s && PyErr_Occurred()))r+   r   r,   is_integer_typer-   Zis_complex_typer   
get_c_namereplacePointerType"_convert_funcarg_to_c_ptr_or_arrayStructOrUnionEnumTyper'   r)   FunctionPtrTypeNotImplementedError)r   r/   fromvartovarerrcodeZextraarg	converterZerrvaluer   r   r   _convert_funcarg_to_c   sJ    
   z$VCPythonEngine._convert_funcarg_to_cc                 C   s.   t |tjr*|d |d |d d S )NzPy_ssize_t datasizez-struct _cffi_freeme_s *large_args_free = NULLzIif (large_args_free != NULL) _cffi_free_array_arguments(large_args_free);)r+   r   r|   add)r   r/   	localvars	freelinesr   r   r   _extra_local_variables  s    

z%VCPythonEngine._extra_local_variablesc                 C   s~   |  d |  d| |||f  |  d |  d|f  |  d| |||f  |  d |  d|  |  d d S )	Nz1  datasize = _cffi_prepare_pointer_call_argument(z(      _cffi_type(%d), %s, (char **)&%s);z  if (datasize != 0) {zE    %s = ((size_t)datasize) <= 640 ? alloca((size_t)datasize) : NULL;zF    if (_cffi_convert_array_argument(_cffi_type(%d), %s, (char **)&%s,z,            datasize, &large_args_free) < 0)z	      %s;r6   )r'   r)   )r   r/   r   r   r   r   r   r   r}   !  s     
  

z1VCPythonEngine._convert_funcarg_to_c_ptr_or_arrayc                 C   s  t |tjr`| r,|jdkr,d||jf S |jdkrLd|jdd|f S d|| |f S nt |tjtjfrd|| |f S t |tj	rd|| t|j
f S t |tjr|jd krtd	| |f d
|| |f S t |tjrd|| |f S t|d S )Nrw   z_cffi_from_c_int(%s, %s)r*   z_cffi_from_c_%s(%s)rj   rx   z/_cffi_from_c_deref((char *)&%s, _cffi_type(%d))z0_cffi_from_c_pointer((char *)%s, _cffi_type(%d))z!'%s' is used as %s, but is opaquez0_cffi_from_c_struct((char *)&%s, _cffi_type(%d)))r+   r   r,   ry   r-   r{   r)   r|   r   	ArrayTypeitemr~   fldnames	TypeError_get_c_namer   r   )r   r/   varcontextr   r   r   _convert_expr_from_c.  sF    
   
   z#VCPythonEngine._convert_expr_from_cc                 C   sH   t |tjst|jr"| | n"|jD ]}| | q(| |j d S r	   )r+   r   r   AssertionErrorellipsisr1   argsresult)r   r/   r-   r(   r   r   r   "_generate_cpy_function_collecttypeU  s    
z1VCPythonEngine._generate_cpy_function_collecttypec              
   C   s  t |tjst|jr(| d|| d S | j}t|j}|dkrFd}n|dkrTd}nd}|d |d||f  |d	 d
| }t	|jD ] \}}|d|
d| |  qt }	t }
|jD ]}| ||	|
 qt|	D ]}|d|f  qt |jtjs*d}d| }|d|j
d|  |d nd}t|jdkrtt|j}|D ]}|d|  qP|  |dd| |ddd |D f  |d |  t	|jD ](\}}| |d| d| d |  q|d |d |d||ddd tt|jD f  |d  |d! |  |d" |dkr>|d# |r~|d$| |jd%d&  |
D ]}|d'|  q`|d( n(|
D ]}|d'|  q|d) |d* |d+ |  d S ),NFr   Znoargr   Zarg0r   static PyObject *z(_cffi_f_%s(PyObject *self, PyObject *%s)r4   zargument of %s  %s;z x%dz	result = zresult of %sz resultz  PyObject *pyresult;r"   z  PyObject *arg%d;z+  if (!PyArg_ParseTuple(args, "%s:%s", %s))Oz, c                 S   s   g | ]}d | qS )z&arg%dr   rG   r   r   r   rF     s     z>VCPythonEngine._generate_cpy_function_decl.<locals>.<listcomp>r5   zarg%dx%dzreturn NULLz  Py_BEGIN_ALLOW_THREADSz  _cffi_restore_errno();z  { %s%s(%s); }c                 S   s   g | ]}d | qS )r   r   rG   r   r   r   rF     s     z  _cffi_save_errno();z  Py_END_ALLOW_THREADS  (void)self; /* unused */  (void)noarg; /* unused */z  pyresult = %s;r   zresult typez  z  return pyresult;z  Py_INCREF(Py_None);z  return Py_None;r7   )r+   r   r   r   r   _generate_cpy_constr'   r.   r   	enumeraterz   setr   sortedr   ZVoidTyper\   joinr   r   )r   r/   r-   r=   numargsargnamer   rH   r(   r   r   r2   Zresult_coderngZfreeliner   r   r   _generate_cpy_function_decl`  s    


  
 

z*VCPythonEngine._generate_cpy_function_declc                 C   sL   |j r
d S t|j}|dkr"d}n|dkr0d}nd}| d|||f  d S )Nr   ZMETH_NOARGSr   ZMETH_OZMETH_VARARGSz  {"%s", _cffi_f_%s, %s, NULL},)r   r.   r   r'   )r   r/   r-   r   methr   r   r   _generate_cpy_function_method  s    
z,VCPythonEngine._generate_cpy_function_methodc                 C   s.   |j r
d S t||}t||| || j|< d S r	   )r   rl   setattrr   )r   r/   r-   rR   rT   funcr   r   r   _loaded_cpy_function  s
    
z#VCPythonEngine._loaded_cpy_functionc                 C   s    ||j kst| |d| d S Nstructr-   r   _generate_struct_or_union_declrs   r   r   r   _generate_cpy_struct_decl  s    z(VCPythonEngine._generate_cpy_struct_declc                 C   s   |  |d| d S r    _generate_struct_or_union_methodrs   r   r   r   _generate_cpy_struct_method  s    z*VCPythonEngine._generate_cpy_struct_methodc                 C   s   |  |d|| d S r   _loading_struct_or_unionr   r/   r-   rR   r   r   r   _loading_cpy_struct  s    z"VCPythonEngine._loading_cpy_structc                 K   s   |  | d S r	   _loaded_struct_or_unionru   r   r   r   _loaded_cpy_struct  s    z!VCPythonEngine._loaded_cpy_structc                 C   s    ||j kst| |d| d S Nunionr   rs   r   r   r   _generate_cpy_union_decl  s    z'VCPythonEngine._generate_cpy_union_declc                 C   s   |  |d| d S r   r   rs   r   r   r   _generate_cpy_union_method  s    z)VCPythonEngine._generate_cpy_union_methodc                 C   s   |  |d|| d S r   r   r   r   r   r   _loading_cpy_union  s    z!VCPythonEngine._loading_cpy_unionc                 K   s   |  | d S r	   r   ru   r   r   r   _loaded_cpy_union  s    z VCPythonEngine._loaded_cpy_unionc                 C   s  |j d krd S d||f }d||f }d||f  }| j}|d||f  |d |d |d | D ]\}}	}
}t|	tjr|	 s|
dkr|d	|  qlz$|d
|	jdd| |d|f  W ql t	k
r } z|dt
|  W 5 d }~X Y qlX ql|d |d |d|f  |d |d|  |d |d|  |d | D ]h\}}	}
}|
dkrlqR|d||f  t|	tjr|	jd kr|d|	   n|d||f  qR|d |d |d |d |d |d |d|f  |d |  d S ) Nz_cffi_check_%s_%s_cffi_layout_%s_%s%s %szstatic void %s(%s *p)r4   z8  /* only to generate compile-time warnings or errors */z
  (void)p;r   z  (void)((p->%s) << 1);z  { %s = &p->%s; (void)tmp; }z*tmpzfield %r)Zqualsz
  /* %s */r7   r   z#%s(PyObject *self, PyObject *noarg)z,  struct _cffi_aligncheck { char x; %s y; };z  static Py_ssize_t nums[] = {z    sizeof(%s),z)    offsetof(struct _cffi_aligncheck, y),z    offsetof(%s, %s),z    0,  /* %s */z    sizeof(((%s *)0)->%s),z    -1z  };r   r   z'  return _cffi_get_struct_layout(nums);z3  /* the next line is not executed, but compiled */z  %s(0);)r   stripr'   
enumfieldsr+   r   r,   ry   rz   r   strr   lengthr   )r   r/   prefixr-   Zcheckfuncnamelayoutfuncnamecnamer=   fnameftypefbitsizefqualrc   r   r   r   r     s`    
$
z-VCPythonEngine._generate_struct_or_union_declc                 C   s0   |j d krd S d||f }| d||f  d S )Nr   z   {"%s", %s, METH_NOARGS, NULL},)r   r'   )r   r/   r   r-   r   r   r   r   r     s    
z/VCPythonEngine._generate_struct_or_union_methodc                 C   s   |j d krd S d||f }t||}| }t|tjr|jr|d }|d }	|dd d }
|dd d }|  t|
t|  krt|j ksn t|
|||	f|_	nd||f 
 }||f| j|< d S )Nr   r   r         r   )r   rl   r+   r   r~   partialZforce_flattenr.   r   Zfixedlayoutr   r   )r   r/   r   r-   rR   r   functionlayoutZ	totalsizeZtotalalignmentZfieldofsZ	fieldsizer   r   r   r   r     s    

(z'VCPythonEngine._loading_struct_or_unionc                 C   s  |j d krd S | j| || jkrdd }| j}||}| j|\}}||d ||d ||d ||d d}| D ]v\}}	}
}|
dkrq||| |||d|f  ||d  dkr||	}|||d  ||d	|f  |d7 }q|t	|kst
d S )
Nc                 S   s   | |krt d||| f d S )Nz'%s (we have %d, but C compiler says %d)r   )Z	realvalueZexpectedvaluemsgr   r   r   check4  s    z5VCPythonEngine._loaded_struct_or_union.<locals>.checkr   zwrong total sizer   zwrong total alignmentr   zwrong offset for field %rzwrong size for field %r)r   r   r^   r   popsizeofZalignofr   Zoffsetofr.   r   )r   r/   r   r   ZBStructr   r   rH   r   r   r   r   ZBFieldr   r   r   r   -  s0    



z&VCPythonEngine._loaded_struct_or_unionc                 C   s.   t |tjr| ||d n| |d| d S Nr"   )r+   r   r   _generate_cpy_enum_declr   rs   r   r   r   _generate_cpy_anonymous_declQ  s    z+VCPythonEngine._generate_cpy_anonymous_declc                 C   s   t |tjs| |d| d S r   )r+   r   r   r   rs   r   r   r   _generate_cpy_anonymous_methodW  s    z-VCPythonEngine._generate_cpy_anonymous_methodc                 C   s0   t |tjr| ||| n| |d|| d S r   )r+   r   r   _loading_cpy_enumr   r   r   r   r   _loading_cpy_anonymous[  s    z%VCPythonEngine._loading_cpy_anonymousc                 K   s.   t |tjr | j|||f| n
| | d S r	   )r+   r   r   _loaded_cpy_enumr   ru   r   r   r   _loaded_cpy_anonymousa  s    z$VCPythonEngine._loaded_cpy_anonymousconstFc	                 C   st  | j }	d||f }
|	d|
  |	d |	d |	d |sT|	d|pD|d|  n|dks`t|d k	rt| || |s|d	krd
| }n|}|	d|f  |	d| |ddf  |stn|	d|  |	d |	d |r|	d |	d |	d|f  |	d |	d |	d |	d |	d|  |	d |	d |	d |	d| j|   |
d | j|< |	d |	  d S )Nz_cffi_%s_%sstatic int %s(PyObject *lib)r4   z  PyObject *o;z
  int res;r   z ir   r   &z  i = (%s);z	  o = %s;rH   zvariable typez!  o = _cffi_from_c_int_const(%s);z  if (o == NULL)    return -1;z  {z    PyObject *o1 = o;z8    o = Py_BuildValue("On", o1, (Py_ssize_t)sizeof(%s));z    Py_DECREF(o1);z    if (o == NULL)z      return -1;r6   z-  res = PyObject_SetAttrString(lib, "%s", o);z  Py_DECREF(o);z  if (res < 0)  return %s;(lib)r7   )r'   rz   r   _check_int_constant_valuer   r8   )r   is_intr-   r/   categoryvartpdelayedsize_toocheck_valuer=   funcnameZrealexprr   r   r   r   j  sR    


z"VCPythonEngine._generate_cpy_constc                 C   s&   t |tjo| }|s"| | d S r	   )r+   r   r,   ry   r1   r   r/   r-   r   r   r   r   "_generate_cpy_constant_collecttype  s    z1VCPythonEngine._generate_cpy_constant_collecttypec                 C   s&   t |tjo| }| ||| d S r	   )r+   r   r,   ry   r   r   r   r   r   _generate_cpy_constant_decl  s    z*VCPythonEngine._generate_cpy_constant_declc                 C   s   | j }|dkr"|d|||f  n|d|||f  |d |d|  |d|  |d |d|  |d	 |d
 |d|||f  |d |d d S )Nr   z&  if ((%s) > 0 || (long)(%s) != %dL) {z1  if ((%s) <= 0 || (unsigned long)(%s) != %dUL) {z    char buf[64];z    if ((%s) <= 0)z.        snprintf(buf, 63, "%%ld", (long)(%s));z    elsez7        snprintf(buf, 63, "%%lu", (unsigned long)(%s));z)    PyErr_Format(_cffi_VerificationError,z6                 "%s%s has the real value %s, not %s",z(                 "%s", "%s", buf, "%d");r   r6   )r'   )r   r-   rE   Z
err_prefixr=   r   r   r   r     s8      
    z(VCPythonEngine._check_int_constant_valuec                 C   s   | dd}d||f S )N$Z___D_z_cffi_e_%s_%s)r{   )r   r   r-   r   r   r   _enum_funcname  s    zVCPythonEngine._enum_funcnameenumc                 C   s   |j r&|jD ]}| jd|dd qd S | ||}| j}|d|  |d t|j|jD ]\}}| ||d|  qZ|d| jd   |d | jd< |d	 |  d S )
NTF)r   r   r4   z	enum %s: r   r   r7   )	r   enumeratorsr   r   r'   zip
enumvaluesr   r8   )r   r/   r-   r   
enumeratorr   r=   	enumvaluer   r   r   r     s     
z&VCPythonEngine._generate_cpy_enum_declc                    s.   |j r* fdd|jD }t||_d|_d S )Nc                    s   g | ]}t  |qS r   )rl   )rC   r   rR   r   r   rF     s   z4VCPythonEngine._loading_cpy_enum.<locals>.<listcomp>T)r   r   tupler   Zpartial_resolved)r   r/   r-   rR   r   r   r   r   r     s    

z VCPythonEngine._loading_cpy_enumc                 C   s(   t |j|jD ]\}}t||| qd S r	   )r   r   r   r   )r   r/   r-   rR   rT   r   r   r   r   r   r     s    zVCPythonEngine._loaded_cpy_enumc                 C   s&   |dkrd }n|}| j d||d d S )Nz...T)r   )r   )r   r/   r-   r   r   r   r   _generate_cpy_macro_decl  s    z'VCPythonEngine._generate_cpy_macro_declc                 C   s2   t |tjrt|j}n
t|}| | d S r	   )r+   r   r   r|   r   r1   r   r/   r-   Ztp_ptrr   r   r   "_generate_cpy_variable_collecttype  s    
z1VCPythonEngine._generate_cpy_variable_collecttypec                 C   sR   t |tjr2t|j}| jd|||| d nt|}| jd||dd d S )NF)r   r   r   )r   )r+   r   r   r|   r   r   length_is_unknownr   r   r   r   _generate_cpy_variable_decl  s    
z*VCPythonEngine._generate_cpy_variable_declc                    s   t ||}t|tjr| r|t|ts,t|\}}| j|j	}t
|| j|\}}	|	dkrrtd||j	f ||}|jd k	r| j|}
| j|
|}t||| d S | t||  fdd} fdd}tt||t|| t|j| d S )Nr   z/bad size: %r does not seem to be an array of %sc                    s    d S r   r   rS   ptrr   r   getter"  s    z3VCPythonEngine._loaded_cpy_variable.<locals>.getterc                    s   | d< d S r   r   )rT   rE   r   r   r   setter$  s    z3VCPythonEngine._loaded_cpy_variable.<locals>.setter)rl   r+   r   r   r   r   r   r   r^   r   divmodr   r   Zresolve_lengthr   castr   delattrr(   propertyrJ   append)r   r/   r-   rR   rT   rE   sizeZ	BItemTyper   restZBArrayr  r  r   r   r   _loaded_cpy_variable	  s2    



z#VCPythonEngine._loaded_cpy_variablec                 C   s4   | j }|d |d |d| jd   |d d S )Nz,static int _cffi_setup_custom(PyObject *lib)r4   r   Tr7   )r'   r8   )r   r=   r   r   r   r;   +  s
    z%VCPythonEngine._generate_setup_custom)r"   )N)Nr   NTFN)r"   )r   )LrO   rP   rQ   Z
_class_keyZ_gen_python_moduler   r   r   r!   r'   r)   r1   r@   rf   ri   r   rY   rt   rv   r   r   r}   r   Z!_generate_cpy_typedef_collecttypeZ_generate_cpy_typedef_declZ_generate_cpy_typedef_methodZ_loading_cpy_typedefZ_loaded_cpy_typedefr   r   r   Z_loading_cpy_functionr   Z _generate_cpy_struct_collecttyper   r   r   r   Z_generate_cpy_union_collecttyper   r   r   r   r   r   r   r   Z#_generate_cpy_anonymous_collecttyper   r   r   r   r   r   r   Z_generate_cpy_constant_methodZ_loading_cpy_constantZ_loaded_cpy_constantr   r   r   Z_generate_cpy_enum_collecttypeZ_generate_cpy_enum_methodr   r   r   Z_generate_cpy_macro_collecttypeZ_generate_cpy_macro_methodZ_loading_cpy_macroZ_loaded_cpy_macror   r   Z_generate_cpy_variable_methodZ_loading_cpy_variabler
  r;   r   r   r   r   r   
   s   
[
:
'P
3"	       
0

	"r   a)  
#include <Python.h>
#include <stddef.h>

/* this block of #ifs should be kept exactly identical between
   c/_cffi_backend.c, cffi/vengine_cpy.py, cffi/vengine_gen.py
   and cffi/_cffi_include.h */
#if defined(_MSC_VER)
# include <malloc.h>   /* for alloca() */
# if _MSC_VER < 1600   /* MSVC < 2010 */
   typedef __int8 int8_t;
   typedef __int16 int16_t;
   typedef __int32 int32_t;
   typedef __int64 int64_t;
   typedef unsigned __int8 uint8_t;
   typedef unsigned __int16 uint16_t;
   typedef unsigned __int32 uint32_t;
   typedef unsigned __int64 uint64_t;
   typedef __int8 int_least8_t;
   typedef __int16 int_least16_t;
   typedef __int32 int_least32_t;
   typedef __int64 int_least64_t;
   typedef unsigned __int8 uint_least8_t;
   typedef unsigned __int16 uint_least16_t;
   typedef unsigned __int32 uint_least32_t;
   typedef unsigned __int64 uint_least64_t;
   typedef __int8 int_fast8_t;
   typedef __int16 int_fast16_t;
   typedef __int32 int_fast32_t;
   typedef __int64 int_fast64_t;
   typedef unsigned __int8 uint_fast8_t;
   typedef unsigned __int16 uint_fast16_t;
   typedef unsigned __int32 uint_fast32_t;
   typedef unsigned __int64 uint_fast64_t;
   typedef __int64 intmax_t;
   typedef unsigned __int64 uintmax_t;
# else
#  include <stdint.h>
# endif
# if _MSC_VER < 1800   /* MSVC < 2013 */
#  ifndef __cplusplus
    typedef unsigned char _Bool;
#  endif
# endif
# define _cffi_float_complex_t   _Fcomplex    /* include <complex.h> for it */
# define _cffi_double_complex_t  _Dcomplex    /* include <complex.h> for it */
#else
# include <stdint.h>
# if (defined (__SVR4) && defined (__sun)) || defined(_AIX) || defined(__hpux)
#  include <alloca.h>
# endif
# define _cffi_float_complex_t   float _Complex
# define _cffi_double_complex_t  double _Complex
#endif

#if PY_MAJOR_VERSION < 3
# undef PyCapsule_CheckExact
# undef PyCapsule_GetPointer
# define PyCapsule_CheckExact(capsule) (PyCObject_Check(capsule))
# define PyCapsule_GetPointer(capsule, name) \
    (PyCObject_AsVoidPtr(capsule))
#endif

#if PY_MAJOR_VERSION >= 3
# define PyInt_FromLong PyLong_FromLong
#endif

#define _cffi_from_c_double PyFloat_FromDouble
#define _cffi_from_c_float PyFloat_FromDouble
#define _cffi_from_c_long PyInt_FromLong
#define _cffi_from_c_ulong PyLong_FromUnsignedLong
#define _cffi_from_c_longlong PyLong_FromLongLong
#define _cffi_from_c_ulonglong PyLong_FromUnsignedLongLong
#define _cffi_from_c__Bool PyBool_FromLong

#define _cffi_to_c_double PyFloat_AsDouble
#define _cffi_to_c_float PyFloat_AsDouble

#define _cffi_from_c_int_const(x)                                        \
    (((x) > 0) ?                                                         \
        ((unsigned long long)(x) <= (unsigned long long)LONG_MAX) ?      \
            PyInt_FromLong((long)(x)) :                                  \
            PyLong_FromUnsignedLongLong((unsigned long long)(x)) :       \
        ((long long)(x) >= (long long)LONG_MIN) ?                        \
            PyInt_FromLong((long)(x)) :                                  \
            PyLong_FromLongLong((long long)(x)))

#define _cffi_from_c_int(x, type)                                        \
    (((type)-1) > 0 ? /* unsigned */                                     \
        (sizeof(type) < sizeof(long) ?                                   \
            PyInt_FromLong((long)x) :                                    \
         sizeof(type) == sizeof(long) ?                                  \
            PyLong_FromUnsignedLong((unsigned long)x) :                  \
            PyLong_FromUnsignedLongLong((unsigned long long)x)) :        \
        (sizeof(type) <= sizeof(long) ?                                  \
            PyInt_FromLong((long)x) :                                    \
            PyLong_FromLongLong((long long)x)))

#define _cffi_to_c_int(o, type)                                          \
    ((type)(                                                             \
     sizeof(type) == 1 ? (((type)-1) > 0 ? (type)_cffi_to_c_u8(o)        \
                                         : (type)_cffi_to_c_i8(o)) :     \
     sizeof(type) == 2 ? (((type)-1) > 0 ? (type)_cffi_to_c_u16(o)       \
                                         : (type)_cffi_to_c_i16(o)) :    \
     sizeof(type) == 4 ? (((type)-1) > 0 ? (type)_cffi_to_c_u32(o)       \
                                         : (type)_cffi_to_c_i32(o)) :    \
     sizeof(type) == 8 ? (((type)-1) > 0 ? (type)_cffi_to_c_u64(o)       \
                                         : (type)_cffi_to_c_i64(o)) :    \
     (Py_FatalError("unsupported size for type " #type), (type)0)))

#define _cffi_to_c_i8                                                    \
                 ((int(*)(PyObject *))_cffi_exports[1])
#define _cffi_to_c_u8                                                    \
                 ((int(*)(PyObject *))_cffi_exports[2])
#define _cffi_to_c_i16                                                   \
                 ((int(*)(PyObject *))_cffi_exports[3])
#define _cffi_to_c_u16                                                   \
                 ((int(*)(PyObject *))_cffi_exports[4])
#define _cffi_to_c_i32                                                   \
                 ((int(*)(PyObject *))_cffi_exports[5])
#define _cffi_to_c_u32                                                   \
                 ((unsigned int(*)(PyObject *))_cffi_exports[6])
#define _cffi_to_c_i64                                                   \
                 ((long long(*)(PyObject *))_cffi_exports[7])
#define _cffi_to_c_u64                                                   \
                 ((unsigned long long(*)(PyObject *))_cffi_exports[8])
#define _cffi_to_c_char                                                  \
                 ((int(*)(PyObject *))_cffi_exports[9])
#define _cffi_from_c_pointer                                             \
    ((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[10])
#define _cffi_to_c_pointer                                               \
    ((char *(*)(PyObject *, CTypeDescrObject *))_cffi_exports[11])
#define _cffi_get_struct_layout                                          \
    ((PyObject *(*)(Py_ssize_t[]))_cffi_exports[12])
#define _cffi_restore_errno                                              \
    ((void(*)(void))_cffi_exports[13])
#define _cffi_save_errno                                                 \
    ((void(*)(void))_cffi_exports[14])
#define _cffi_from_c_char                                                \
    ((PyObject *(*)(char))_cffi_exports[15])
#define _cffi_from_c_deref                                               \
    ((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[16])
#define _cffi_to_c                                                       \
    ((int(*)(char *, CTypeDescrObject *, PyObject *))_cffi_exports[17])
#define _cffi_from_c_struct                                              \
    ((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[18])
#define _cffi_to_c_wchar_t                                               \
    ((wchar_t(*)(PyObject *))_cffi_exports[19])
#define _cffi_from_c_wchar_t                                             \
    ((PyObject *(*)(wchar_t))_cffi_exports[20])
#define _cffi_to_c_long_double                                           \
    ((long double(*)(PyObject *))_cffi_exports[21])
#define _cffi_to_c__Bool                                                 \
    ((_Bool(*)(PyObject *))_cffi_exports[22])
#define _cffi_prepare_pointer_call_argument                              \
    ((Py_ssize_t(*)(CTypeDescrObject *, PyObject *, char **))_cffi_exports[23])
#define _cffi_convert_array_from_object                                  \
    ((int(*)(char *, CTypeDescrObject *, PyObject *))_cffi_exports[24])
#define _CFFI_NUM_EXPORTS 25

typedef struct _ctypedescr CTypeDescrObject;

static void *_cffi_exports[_CFFI_NUM_EXPORTS];
static PyObject *_cffi_types, *_cffi_VerificationError;

static int _cffi_setup_custom(PyObject *lib);   /* forward */

static PyObject *_cffi_setup(PyObject *self, PyObject *args)
{
    PyObject *library;
    int was_alive = (_cffi_types != NULL);
    (void)self; /* unused */
    if (!PyArg_ParseTuple(args, "OOO", &_cffi_types, &_cffi_VerificationError,
                                       &library))
        return NULL;
    Py_INCREF(_cffi_types);
    Py_INCREF(_cffi_VerificationError);
    if (_cffi_setup_custom(library) < 0)
        return NULL;
    return PyBool_FromLong(was_alive);
}

union _cffi_union_alignment_u {
    unsigned char m_char;
    unsigned short m_short;
    unsigned int m_int;
    unsigned long m_long;
    unsigned long long m_longlong;
    float m_float;
    double m_double;
    long double m_longdouble;
};

struct _cffi_freeme_s {
    struct _cffi_freeme_s *next;
    union _cffi_union_alignment_u alignment;
};

#ifdef __GNUC__
  __attribute__((unused))
#endif
static int _cffi_convert_array_argument(CTypeDescrObject *ctptr, PyObject *arg,
                                        char **output_data, Py_ssize_t datasize,
                                        struct _cffi_freeme_s **freeme)
{
    char *p;
    if (datasize < 0)
        return -1;

    p = *output_data;
    if (p == NULL) {
        struct _cffi_freeme_s *fp = (struct _cffi_freeme_s *)PyObject_Malloc(
            offsetof(struct _cffi_freeme_s, alignment) + (size_t)datasize);
        if (fp == NULL)
            return -1;
        fp->next = *freeme;
        *freeme = fp;
        p = *output_data = (char *)&fp->alignment;
    }
    memset((void *)p, 0, (size_t)datasize);
    return _cffi_convert_array_from_object(p, ctptr, arg);
}

#ifdef __GNUC__
  __attribute__((unused))
#endif
static void _cffi_free_array_arguments(struct _cffi_freeme_s *freeme)
{
    do {
        void *p = (void *)freeme;
        freeme = freeme->next;
        PyObject_Free(p);
    } while (freeme != NULL);
}

static int _cffi_init(void)
{
    PyObject *module, *c_api_object = NULL;

    module = PyImport_ImportModule("_cffi_backend");
    if (module == NULL)
        goto failure;

    c_api_object = PyObject_GetAttrString(module, "_C_API");
    if (c_api_object == NULL)
        goto failure;
    if (!PyCapsule_CheckExact(c_api_object)) {
        PyErr_SetNone(PyExc_ImportError);
        goto failure;
    }
    memcpy(_cffi_exports, PyCapsule_GetPointer(c_api_object, "cffi"),
           _CFFI_NUM_EXPORTS * sizeof(void *));

    Py_DECREF(module);
    Py_DECREF(c_api_object);
    return 0;

  failure:
    Py_XDECREF(module);
    Py_XDECREF(c_api_object);
    return -1;
}

#define _cffi_type(num) ((CTypeDescrObject *)PyList_GET_ITEM(_cffi_types, num))

/**********/
)
rX   r"   r   rd   r   r   r   r_   r   r9   r   r   r   r   <module>   s         .