B
    ]                 @   s@   d dl Z d dlZddlmZ ddlmZ G dd deZdZdS )    N   )model)VerificationErrorc               @   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   /lib/python3.7/site-packages/cffi/vengine_cpy.py__init__   s    zVCPythonEngine.__init__c             C   s   d S )Nr   )r   kwdsr   r   r   patch_extension_kwds   s    z#VCPythonEngine.patch_extension_kwdsc             C   sP   yt ||\}}}W n tk
r*   d S X |d k	r<|  |d |krLd S |S )Nr   )impfind_moduleImportErrorclose)r   Zmodule_namepathZso_suffixesffilenameZ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$   s    zVCPythonEngine.collect_types c             C   s   | j |d  d S )N
)Z_fwrite)r   Zwhatr   r   r   _prnt(   s    zVCPythonEngine._prntc             C   s
   | j | S )N)r   )r   typer   r   r   _gettypenum+   s    zVCPythonEngine._gettypenumc             C   s8   t |tjr|jdkr4|| jkr4t| j}|| j|< d S )Nzlong double)
isinstancer   PrimitiveTypenamer   len)r   tpZnumr   r   r   _do_collect_type/   s
    


zVCPythonEngine._do_collect_typec             C   s  |    ddg| _| j}|t |  || jj |  | d |   |  |d | d |d |d |d |  | j }| jd }|d	 |  |d
 |d |d|  |d |d |d |d |d |  |d |d|  |d |d |d |d |d |d|f  |d |d |d |d |d |  |d |  |d |d|  |d |d |d|  |d |d  |d!|f  |d  |d" |d |  |d# d S )$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)z    return NULL;z#  if (%s < 0 || _cffi_init() < 0) {z    Py_DECREF(lib);z  }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   Zpreambler   _generate_setup_customget_module_name)r   prntmodnameZ	constantsr   r   r   write_source_to_f6   st    




z VCPythonEngine.write_source_to_fNc          
      sv  t   zttdrt }zvy6ttdr<|d k	r<t| t j jj	W n: t
k
r } zdjj	|f }t|W d d }~X Y nX W d ttdrt| X W d 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   )r4   i)
revmappingr   r   r7      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 )N)	_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_ffir:   r>   r   )r=   moduler   r   r   r=      s   r=   r   z0reimporting %r might overwrite older definitionsZloaded)library)r   acquire_lockhasattrsysr2   r3   Zload_dynamicr   r.   Zmodulefilenamer   r   release_lock_loaddictr   itemsranger$   r;   mapr   _get_cached_btypeobjectZ_cffi_setupwarningswarnZ_cffi_original_ffir
   Z_cffi_types_of_builtin_funcs)r   flagsZprevious_flagseerrorlstrC   rO   r   )r=   rB   r9   r   r   load_library   s<    



zVCPythonEngine.load_libraryc             C   s$   dd | j jj D }|  |S )Nc             S   s   g | ]\}\}}||fqS r   r   )r4   r5   r%   Zqualr   r   r   r7      s    z4VCPythonEngine._get_declarations.<locals>.<listcomp>)r   Z_parserZ_declarationsrJ   sort)r   rT   r   r   r   _get_declarations   s    z VCPythonEngine._get_declarationsc             C   s   x|   D ]\}}|dd\}}yt| d||f }W n  tk
rX   td| Y nX y||| W q
 tk
r } zt||  W d d }~X Y q
X q
W d S )N r   z_generate_cpy_%s_%sznot implemented in verify(): %r)rW   splitgetattrAttributeErrorr   	Exceptionr   attach_exception_info)r   	step_namer#   r%   kindrealnamer(   rR   r   r   r   r      s    zVCPythonEngine._generatec       
      K   s   x||   D ]p\}}|dd\}}t| d||f }y||||f| W q
 tk
rx }	 zt|	|  W d d }	~	X Y q
X q
W d S )NrX   r   z
_%s_cpy_%s)rW   rY   rZ   r\   r   r]   )
r   rB   r^   r   r#   r%   r_   r`   r(   rR   r   r   r   rH      s    zVCPythonEngine._loadc             C   s   d S )Nr   )r   r%   r#   r   r   r   _generate_nothing   s    z VCPythonEngine._generate_nothingc             K   s   d S )Nr   )r   r%   r#   rB   r   r   r   r   _loaded_noop   s    zVCPythonEngine._loaded_noopc             C   s*  d}t |tjrT| r2|jdkr2d}d|j }nd|d|jddf }d}nt |tjrt| |||| 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(%s)_cffi_to_c_%srX   _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#   
get_c_namereplacePointerType"_convert_funcarg_to_c_ptr_or_arrayStructOrUnionEnumTyper   r    FunctionPtrTypeNotImplementedError)r   r%   fromvartovarerrcodeZextraargZ	converterZerrvaluer   r   r   _convert_funcarg_to_c   s4    
z$VCPythonEngine._convert_funcarg_to_cc             C   s   t |tjr|d d S )NzPy_ssize_t datasize)r!   r   rh   add)r   r%   	localvarsr   r   r   _extra_local_variables  s    z%VCPythonEngine._extra_local_variablesc             C   s   |  d |  d| |||f  |  d |  d |  d|  |  d|f  |  d|f  |  d|| ||f  |  d|  |  d	 d S )
Nz1  datasize = _cffi_prepare_pointer_call_argument(z(      _cffi_type(%d), %s, (char **)&%s);z  if (datasize != 0) {z    if (datasize < 0)z	      %s;z"    %s = alloca((size_t)datasize);z,    memset((void *)%s, 0, (size_t)datasize);zL    if (_cffi_convert_array_from_object((char *)%s, _cffi_type(%d), %s) < 0)z  })r   r    )r   r%   rn   ro   rp   r   r   r   ri     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 )Nrc   z_cffi_from_c_int(%s, %s)zlong doublez_cffi_from_c_%s(%s)rX   rd   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"   re   r#   rg   r    rh   rl   	ArrayTypeitemrj   fldnames	TypeError_get_c_namerk   rm   )r   r%   varcontextr   r   r   _convert_expr_from_c)  s.    

z#VCPythonEngine._convert_expr_from_cc             C   sL   t |tjst|jr"| | n&x|jD ]}| | q*W | |j d S )N)r!   r   rl   AssertionErrorellipsisr&   argsresult)r   r%   r#   r   r   r   r   "_generate_cpy_function_collecttypeP  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
| }x.t	|jD ] \}}|d|
d| |  qW t }	x|jD ]}| ||	 qW x|	D ]}
|d|
f  qW t |jtjs"d}d| }|d|j
d|  nd}t|jdkrtt|j}x|D ]}|d|  qJW |  |dd| |ddd |D f  |d |  x6t	|jD ](\}}| |d| d| d |  qW |d |d |d||ddd tt|jD f  |d |d  |  |d! |dkr>|d" |r^|d#| |jd$d%  n|d& |d' |d( |  d S ))NFr   Znoargr   Zarg0r   zstatic PyObject *z(_cffi_f_%s(PyObject *self, PyObject *%s)r)   zargument of %sz  %s;z x%dz	result = zresult of %sz resultr   z  PyObject *arg%d;z+  if (!PyArg_ParseTuple(args, "%s:%s", %s))Oz, c             S   s   g | ]}d | qS )z&arg%dr   )r4   r8   r   r   r   r7     s    z>VCPythonEngine._generate_cpy_function_decl.<locals>.<listcomp>z    return NULL;zarg%dzx%dzreturn NULLz  Py_BEGIN_ALLOW_THREADSz  _cffi_restore_errno();z  { %s%s(%s); }c             S   s   g | ]}d | qS )zx%dr   )r4   r8   r   r   r   r7     s    z  _cffi_save_errno();z  Py_END_ALLOW_THREADSz  (void)self; /* unused */z  (void)noarg; /* unused */z  return %s;r   zresult typez  Py_INCREF(Py_None);z  return Py_None;r*   )r!   r   rl   r}   r~   _generate_cpy_constr   r$   r   	enumeraterf   setrt   r   ZVoidTyperK   joinrq   r|   )r   r%   r#   r/   numargsargnamer{   r8   r   rs   r'   Zresult_coderngr   r   r   _generate_cpy_function_decl[  st    


"$
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$   r   r   )r   r%   r#   r   methr   r   r   _generate_cpy_function_method  s    
z,VCPythonEngine._generate_cpy_function_methodc             C   s.   |j r
d S t||}t||| || j|< d S )N)r~   rZ   setattrr
   )r   r%   r#   rB   rC   funcr   r   r   _loaded_cpy_function  s
    
z#VCPythonEngine._loaded_cpy_functionc             C   s    ||j kst| |d| d S )Nstruct)r#   r}   _generate_struct_or_union_decl)r   r%   r#   r   r   r   _generate_cpy_struct_decl  s    z(VCPythonEngine._generate_cpy_struct_declc             C   s   |  |d| d S )Nr   ) _generate_struct_or_union_method)r   r%   r#   r   r   r   _generate_cpy_struct_method  s    z*VCPythonEngine._generate_cpy_struct_methodc             C   s   |  |d|| d S )Nr   )_loading_struct_or_union)r   r%   r#   rB   r   r   r   _loading_cpy_struct  s    z"VCPythonEngine._loading_cpy_structc             K   s   |  | d S )N)_loaded_struct_or_union)r   r%   r#   rB   r   r   r   r   _loaded_cpy_struct  s    z!VCPythonEngine._loaded_cpy_structc             C   s    ||j kst| |d| d S )Nunion)r#   r}   r   )r   r%   r#   r   r   r   _generate_cpy_union_decl  s    z'VCPythonEngine._generate_cpy_union_declc             C   s   |  |d| d S )Nr   )r   )r   r%   r#   r   r   r   _generate_cpy_union_method  s    z)VCPythonEngine._generate_cpy_union_methodc             C   s   |  |d|| d S )Nr   )r   )r   r%   r#   rB   r   r   r   _loading_cpy_union  s    z!VCPythonEngine._loading_cpy_unionc             K   s   |  | d S )N)r   )r   r%   r#   rB   r   r   r   r   _loaded_cpy_union  s    z VCPythonEngine._loaded_cpy_unionc             C   s  |j d krd S d||f }d||f }d||f  }| j}|d||f  |d |d |d x| D ]\}}	}
}t|	tjr|	 s|
dkr|d	|  qny$|d
|	jdd| |d|f  W qn t	k
r } z|dt
|  W d d }~X Y qnX qnW |d |d |d|f  |d |d|  |d |d|  |d xt| D ]h\}}	}
}|
dkrrqX|d||f  t|	tjr|	jd kr|d|	   n|d||f  qXW |d |d |d |d |d |d |d|f  |d |  d S ) Nz_cffi_check_%s_%sz_cffi_layout_%s_%sz%s %szstatic void %s(%s *p)r)   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 */r*   zstatic PyObject *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  };z  (void)self; /* unused */z  (void)noarg; /* unused */z'  return _cffi_get_struct_layout(nums);z3  /* the next line is not executed, but compiled */z  %s(0);)rw   stripr   
enumfieldsr!   r   r"   re   rf   r   strru   lengthry   )r   r%   prefixr#   Zcheckfuncnamelayoutfuncnamecnamer/   fnameftypefbitsizefqualrR   r   r   r   r     sX    
&
z-VCPythonEngine._generate_struct_or_union_declc             C   s0   |j d krd S d||f }| d||f  d S )Nz_cffi_layout_%s_%sz   {"%s", %s, METH_NOARGS, NULL},)rw   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 )Nz_cffi_layout_%s_%sr   r         z%s %s)rw   rZ   r!   r   rj   partialZforce_flattenr$   r}   Zfixedlayoutr   r	   )r   r%   r   r#   rB   r   ZfunctionlayoutZ	totalsizeZtotalalignmentZfieldofsZ	fieldsizer   r   r   r   r     s    

(z'VCPythonEngine._loading_struct_or_unionc             C   s  |j d krd S | j| || jkrdd }| j}||}| j|\}}||d ||d ||d ||d d}x| D ]v\}}	}
}|
dkrq||| |||d|f  ||d  dkr||	}|||d  ||d	|f  |d7 }qW |t	|kst
d S )
Nc             S   s   | |krt d||| f d S )Nz'%s (we have %d, but C compiler says %d))r   )Z	realvalueZexpectedvaluemsgr   r   r   check(  s    z5VCPythonEngine._loaded_struct_or_union.<locals>.checkr   zwrong total sizer   zwrong total alignmentr   zwrong offset for field %rzwrong size for field %r)rw   r   rM   r	   popsizeofZalignofr   Zoffsetofr$   r}   )r   r%   r   r   ZBStructr   r   r8   r   r   r   r   ZBFieldr   r   r   r   !  s,    


z&VCPythonEngine._loaded_struct_or_unionc             C   s.   t |tjr| ||d n| |d| d S )Nr   )r!   r   rk   _generate_cpy_enum_declr   )r   r%   r#   r   r   r   _generate_cpy_anonymous_declE  s    z+VCPythonEngine._generate_cpy_anonymous_declc             C   s   t |tjs| |d| d S )Nr   )r!   r   rk   r   )r   r%   r#   r   r   r   _generate_cpy_anonymous_methodK  s    z-VCPythonEngine._generate_cpy_anonymous_methodc             C   s0   t |tjr| ||| n| |d|| d S )Nr   )r!   r   rk   _loading_cpy_enumr   )r   r%   r#   rB   r   r   r   _loading_cpy_anonymousO  s    z%VCPythonEngine._loading_cpy_anonymousc             K   s.   t |tjr | j|||f| n
| | d S )N)r!   r   rk   _loaded_cpy_enumr   )r   r%   r#   rB   r   r   r   r   _loaded_cpy_anonymousU  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_%szstatic int %s(PyObject *lib)r)   z  PyObject *o;z
  int res;z  %s;z ir   rz   &z  i = (%s);z	  o = %s;r8   zvariable typez!  o = _cffi_from_c_int_const(%s);z  if (o == NULL)z    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;z  }z-  res = PyObject_SetAttrString(lib, "%s", o);z  Py_DECREF(o);z  if (res < 0)z  return %s;z(lib)r*   )r   rf   r}   _check_int_constant_valuer|   r+   )r   is_intr#   r%   categoryvartpdelayedsize_toocheck_valuer/   funcnameZrealexprr   r   r   r   ^  sN    


z"VCPythonEngine._generate_cpy_constc             C   s&   t |tjo| }|s"| | d S )N)r!   r   r"   re   r&   )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 )N)r!   r   r"   re   r   )r   r%   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");z    return -1;z  })r   )r   r#   r6   Z
err_prefixr/   r   r   r   r     s$    z(VCPythonEngine._check_int_constant_valuec             C   s   | dd}d||f S )N$Z___D_z_cffi_e_%s_%s)rg   )r   r   r#   r   r   r   _enum_funcname  s    zVCPythonEngine._enum_funcnameenumc             C   s   |j r*x|jD ]}| jd|dd qW d S | ||}| j}|d|  |d x,t|j|jD ]\}}| ||d|  q`W |d| jd   |d | jd< |d	 |  d S )
NTF)r   zstatic int %s(PyObject *lib)r)   z	enum %s: z  return %s;z(lib)r*   )	r   enumeratorsr   r   r   zip
enumvaluesr   r+   )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   )rZ   )r4   r   )rB   r   r   r7     s   z4VCPythonEngine._loading_cpy_enum.<locals>.<listcomp>T)r   r   tupler   Zpartial_resolved)r   r%   r#   rB   r   r   )rB   r   r     s
    


z VCPythonEngine._loading_cpy_enumc             C   s,   x&t |j|jD ]\}}t||| qW d S )N)r   r   r   r   )r   r%   r#   rB   rC   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 )N)r!   r   ru   rh   rv   r&   )r   r%   r#   tp_ptrr   r   r   "_generate_cpy_variable_collecttype  s    
z1VCPythonEngine._generate_cpy_variable_collecttypec             C   sT   t |tjr4t|j}| jd||||jdkd nt|}| jd||dd d S )NFz...)r   r   rz   )r   )r!   r   ru   rh   rv   r   r   )r   r%   r#   r   r   r   r   _generate_cpy_variable_decl  s    
z*VCPythonEngine._generate_cpy_variable_declc                s  t ||}t|tjr|jdkr~t|ts.t|\}}| j|j	}t
|| j|\}}	|	dkrtt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 )Nz...r   z/bad size: %r does not seem to be an array of %sc                s    d S )Nr   r   )rC   )ptrr   r   getter  s    z3VCPythonEngine._loaded_cpy_variable.<locals>.getterc                s   | d< d S )Nr   r   )rC   r6   )r   r   r   setter  s    z3VCPythonEngine._loaded_cpy_variable.<locals>.setter)rZ   r!   r   ru   r   r   r}   r   rM   rv   divmodr   r   Zresolve_lengthcastr   delattrr   propertyr:   append)r   r%   r#   rB   rC   r6   sizeZ	BItemTyper   restZBArrayr   r   r   )r   r   _loaded_cpy_variable  s.    




z#VCPythonEngine._loaded_cpy_variablec             C   s4   | j }|d |d |d| jd   |d d S )Nz,static int _cffi_setup_custom(PyObject *lib)r)   z  return %s;Tr*   )r   r+   )r   r/   r   r   r   r-     s
    z%VCPythonEngine._generate_setup_custom)r   )N)Nr   NTFN)r   )r   )Lr?   r@   rA   Z
_class_keyZ_gen_python_moduler   r   r   r   r   r    r&   r1   rU   rW   r   rH   ra   rb   rq   rt   ri   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   
[
:
$I
3"	  
.

	"r   at#  
#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
#else
# include <stdint.h>
# if (defined (__SVR4) && defined (__sun)) || defined(_AIX) || defined(__hpux)
#  include <alloca.h>
# endif
#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);
}

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))

/**********/
)	rF   r   r   r   rS   r   rN   r   r,   r   r   r   r   <module>   s          u