U
    <c9W                     @   s  d dl Z d dlZd dlZd dlZd dlmZmZmZ d dlm	Z	m
Z
mZmZmZmZ d dlZd dlm  mZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZmZ d dlmZm Z m!Z!m"Z"m#Z#m$Z$ d d	l%m&Z& d d
l'm(Z(m)Z)m*Z*m+Z+m,Z,m-Z- eddddddgZ.e/eee"e#f  e	e!ef e.dddZ0d(ee" e	e!ef e!ee! e/e/ee
e$  ddddZ1ddddZ2d)e*e/e/e	e!ef eee"e#f  e!ee! e/dd	ddZ3d*e*e/e/e	e!ef eee"e#f  e!e!d e4e4e/e4dd!d"d#Z5d+e/e/e4ee/ dd$d%d&Z6e7d'kre2  dS ),    N)Counterdefaultdict
namedtuple)DictListOptionalSequenceSetUnion)DispatcherSignature)CodeTemplate)native_function_manager)get_grouped_native_functionsparse_native_yaml)BackendIndexBackendMetadataDispatchKeyNativeFunctionNativeFunctionsGroupOperatorName)SelectiveBuilder)	concatMapcontextFileManagerNamespaceHelperTarget
YamlLoaderParsedExternalYamlbackend_keyautograd_key
class_namecpp_namespacebackend_indices)backend_yaml_pathgrouped_native_functionsr"   returnc              
      s&  dd t dd |D t| d}tj|td}W 5 Q R X t|tsJtddd	d
ddddddg
}|dd d k	s~td|dd }|d	d d k	std|dd}t|t	std| |dd}t|t	std| |dg }	|	d krg }	t|	t
s.td|	 dt|	 d|dg }
|
d krHg }
t|
t
sntd|	 dt|	 dt|
}|dg }t|t
std| |dg }|	| |di }|di }t| dkst|  dd|  d d| tt tt tt	t	td!fd"d#}d t|	dkrtfd$d tW 5 Q R X ||	|||d%}kst|< d  t|dkrtfd&d td'  W 5 Q R X ||| ||d%} kst| < |D ]}t|trXd krg nd(d)  |fD } d kr<g nd*d)   |fD }n`d krfg n d+d) fd,d)| D D } d krg n d-d)  fd.d)| D D }d/d) |D }d0d) |D }t|dkst|dkstd1|d j d2|d j d3qt |S )4Nc                 S   s   i | ]}|j j|qS  )funcname.0fr&   r&   >/tmp/pip-unpacked-wheel-gikjz4vx/torchgen/gen_backend_stubs.py
<dictcomp>1   s    z&parse_backend_yaml.<locals>.<dictcomp>c                 S   s   t | tr| gS t|  S N)
isinstancer   list	functionsr+   r&   r&   r,   <lambda>4       z$parse_backend_yaml.<locals>.<lambda>r)Loaderbackendr    r!   extra_headers	supportedZautogradfull_codegen
non_nativeZir_gensymintz&You must provide a value for "backend"z,You must provide a value for "cpp_namespace"use_out_as_primaryFzHYou must provide either True or False for use_out_as_primary. Provided: device_guardzBYou must provide either True or False for device_guard. Provided: z,expected "supported" to be a list, but got: z
 (of type )z)expected "symint" to be a list, but got: z+expected "autograd" to be a list, but got: r   z contains unexpected keys: z, z). Only the following keys are supported: )backend_ops
symint_opsdispatch_keyr=   use_device_guardr%   c          
         sv   i }| D ]Z}t |}|ks,td| t| j}||krL|d7 }t|d d}	|	||< qt||d||dS )Nz Found an invalid operator name: Z_symintF)kernelZ
structuredr!   T)rB   r=   Zexternalr>   index)r   parseAssertionError
dispatcherr(   r'   r   r   )
r@   rA   rB   r=   rC   metadataopop_nameZkernel_namem)r!   native_functions_mapr&   r,   create_backend_index   s.    
  
z0parse_backend_yaml.<locals>.create_backend_indexc                      s   d  dS )NzFThe provided value for "backend" must be a valid DispatchKey, but got .r&   r&   r7   r&   r,   r3      r4   )r=   rC   c                      s   d  dS )NzThe "autograd" key was specified, which indicates that you would like to override the behavior of autograd for some operators on your backend. However "Autogradz" is not a valid DispatchKey.r&   r&   rP   r&   r,   r3      s   ZAutogradc                 S   s   g | ]}|d k	r|qS r.   r&   r*   rL   r&   r&   r,   
<listcomp>   s   z&parse_backend_yaml.<locals>.<listcomp>c                 S   s   g | ]}|d k	r|qS r.   r&   rQ   r&   r&   r,   rR      s   c                 S   s   g | ]}|d k	r|qS r.   r&   rQ   r&   r&   r,   rR      s   c                    s   g | ]}   |qS r&   
get_kernelr)   )r"   r   r&   r,   rR      s   c                 S   s   g | ]}|d k	r|qS r.   r&   rQ   r&   r&   r,   rR      s   c                    s   g | ]}   |qS r&   rS   r)   )r   r"   r&   r,   rR      s   c                 S   s   g | ]}|d k	r|qS r.   r&   r)   r&   r&   r,   rR      s      c                 S   s   g | ]}|d k	r|qS r.   r&   r)   r&   r&   r,   rR      s      zCurrently, all variants of an op must either be registered to a backend key, or to a backend's autograd key. They cannot be mix and matched. If this is something you need, feel free to create an issue! z" is listed under "supported", but z is listed under "autograd".)r   openyamlloadr   r/   dictrG   popboolr0   typesetextendlenkeysjoinr   strr	   r   r   r   rF   r   rT   r1   rD   r   )r#   r$   r"   r+   Zyaml_valuesZ
valid_keysr    r=   rC   r9   r<   Z
symint_setZsupported_autogradr:   r;   _rN   Zbackend_idxZautograd_idxgZforward_kernelsZbackward_kernelsr&   )r   r7   r"   r   r!   rM   r,   parse_backend_yaml+   sB     
 
  





    rd   )native_functionsr"   r   r   r    kernel_defn_file_pathr:   r%   c                    s  z"t |d}| }W 5 Q R X W n" tk
rD   td| Y nX d krRg || jg|d krhg n
|| jg }	tttdd |	fdd| D }
tt}|
D ]}||j	j
  | qd| d}td	d t||D }d
}| D ]p\}}t|}|| }||krttddd d fdd|D }|d| d| d| d| d| d7 }q|d
ks~t|d S )Nr5   z2Unable to read from the specified impl_path file: c                 S   s   dd |   D S )Nc                 S   s   g | ]\}}||j fqS r&   )rD   )r*   rK   rI   r&   r&   r,   rR     s    z>error_on_missing_kernels.<locals>.<lambda>.<locals>.<listcomp>)items)rE   r&   r&   r,   r3     s   z*error_on_missing_kernels.<locals>.<lambda>c                    s,   g | ]$}|j j  kr|j jkr|qS r&   )r'   r(   r_   r)   )expected_backend_op_namesr:   r&   r,   rR      s   z,error_on_missing_kernels.<locals>.<listcomp>z(.*)z::\s*([\w\d]*)\(c                 S   s   g | ]\}}| d s|qS ):)endswith)r*   xyr&   r&   r,   rR   7  s   
 )r+   r%   c              
   S   s0   t |  t| j W  5 Q R  S Q R X d S r.   )r   r   Zfrom_schemar'   declr2   r&   r&   r,   create_declD  s    
z-error_on_missing_kernels.<locals>.create_decl
c                    s   g | ]} |qS r&   r&   r)   )ro   r&   r,   rR   H  s     z$ is missing a kernel definition for z. We found z( kernel(s) with that name,
but expected zH kernel(s). The expected function schemas for the missing operator are:
z

)rU   readIOErrorrG   rE   rX   r0   r   r   r'   r(   appendr   refindallrg   r^   r   ra   r`   )re   r"   r   r   r    rf   r:   r+   Zbackend_defnsindicesZexpected_backend_native_funcsZ#expected_backend_kernel_name_countsZnative_fZkernel_defn_regexZ!actual_backend_kernel_name_countsZmissing_kernels_err_msgZexpected_namefuncsZexpected_overload_countZactual_overload_countZexpected_schemas_strr&   )ro   rh   r:   r,   error_on_missing_kernels   sr    	




rx   )r%   c                  C   sr   t jdd} | jdddd | jddd	d | jd
tdd	d | jdtd dd |  }t|j|j|j	|j
 d S )NzGenerate backend stub files)descriptionz-sz--source_yamlzApath to source yaml file containing operator external definitions)helpz-oz--output_dirzoutput directoryz	--dry_runF)r[   defaultrz   z--impl_pathz9path to the source C++ file containing kernel definitions)argparseArgumentParseradd_argumentrZ   ra   
parse_argsrunsource_yaml
output_dirdry_run	impl_path)parseroptionsr&   r&   r,   mainR  s     r   rm   )	fmr    r!   r"   r$   backend_dispatch_keyautograd_dispatch_keybackend_namer%   c                    s   d k	st dttttfdd|ttttfdd| t||  dd fdd d S )NzAAutogenerated file by gen_backend_stubs.py. Do not edit directly!c                    s   t |   S r.   destZ#compute_native_function_declarationr2   )r   r"   r&   r,   r3   |  s    z4gen_dispatchkey_nativefunc_headers.<locals>.<lambda>c                    s    d krg S t |   S r.   r   r2   )r   r"   r&   r,   r3     s     NativeFunctions.hzDispatchKeyNativeFunctions.hc                      s   j j  dS )N)generated_commentZnamespace_prologuer    Znamespace_epilogueZdispatch_declarationsZBackendNamer   )prologueepiloguer&   )autograd_declarationsbackend_declarationsr   r   r    r   	ns_helperr&   r,   r3     s    )rG   r0   sortedr\   r   r   write_with_template)r   r    r!   r"   r$   r   r   r   r&   )	r   r   r   r   r"   r   r    r   r   r,   "gen_dispatchkey_nativefunc_headersf  s:    
r   FTr   )r   r   r    r"   r$   r   rB   selectorbuild_in_treeper_operator_headersr   eager_registrationr%   c                    s   | d| dg}|r,d dd |D nd dd |D d k	sLt|  tttj tj
dd dd	}dtd
ddd|rt	d}|j
|dnt	d}|j
|
|dd dd 	
fdd d S )N/r   rp   c                 s   s   | ]}d | dV  qdS )z
#include <>Nr&   r*   hr&   r&   r,   	<genexpr>  s     z/gen_dispatcher_registrations.<locals>.<genexpr>c                 s   s   | ]}d | dV  qdS )z
#include ""Nr&   r   r&   r&   r,   r     s     FTrocmr<   Zclass_method_nameZskip_dispatcher_op_registrationat)Znamespace_strrm   zPTORCH_LIBRARY_IMPL(aten, $dispatch_key, m) {
    $dispatch_registrations_body
};)rB   dispatch_registrations_bodyzTORCH_API void Register${backend_name}${dispatch_key}NativeFunctions() {
    static auto m = MAKE_TORCH_LIBRARY_IMPL(aten, $dispatch_key);
    $dispatch_registrations_body
})r   rB   r   ZRegisterz.cppzRegisterDispatchKey.cppc                      sP   d	sdnd  tj 	ddd 
fdddS )	Nrm   z#include <ATen/Functions.h>F)r   r   zRegisterDispatchDefinitions.inic                      sF   j jt  dtttj tj	dd dddS )Nrm   FTr   )Zns_prologueZns_epilogue"static_init_dispatch_registrationsdeferred_dispatch_registrationsZdispatch_helpersdispatch_namespaceZdispatch_namespaced_definitionsZdispatch_anonymous_definitions)
r   r   r   Zgen_registration_helperslowerr0   r   RegisterDispatchKeyr   ZANONYMOUS_DEFINITIONr&   )backend_indexr    r   rB   r$   r   r   r   r&   r,   r3     s,    	z@gen_dispatcher_registrations.<locals>.<lambda>.<locals>.<lambda>)Zextra_cuda_headersZexternal_backend_headersZops_headersr   r   Zdispatch_headersZdispatch_definitions)r   r   Zgen_registration_headersZsubstitute_with_templatesplitr&   r   r    r   rB   Zexternal_backend_headers_strr   r$   newliner   r   r   r   r&   r,   r3     s&      z.gen_dispatcher_registrations.<locals>.<lambda>)r`   rG   r0   r   r   r   r   ZREGISTRATIONr   r   
substituter   )r   r   r    r"   r$   r   rB   r   r   r   r   r   headersr   Zstatic_templateZdeferred_templater&   r   r,   gen_dispatcher_registrations  s\    	

 r   )r   r   r   r   r%   c              
      s@  t tjj }tj|dtt	d fdd}||}tj|d}tj|d}t
||}	|	j|	j }
}t|
}t| ||}|j}|j}|j}|j}|j}t }|d krd S |d kr||  }|d k	st|d k	rt|
||||| t||||||| |d kr|gn||gD ]}t|||||||| qd S )Nzaten/src/ATen/templates)install_dirr%   c                    s   t |  dS )N)r   template_dirr   )r   )r   r   r   r&   r,   make_file_manager  s
      zrun.<locals>.make_file_managerz*aten/src/ATen/native/native_functions.yamlzaten/src/ATen/native/tags.yaml)pathlibPath__file__parentabsoluteospathr`   ra   r   r   re   r"   r   rd   r   r   r!   r    r   Zget_nop_selectorZnative_function_class_namerG   rx   r   r   )r   r   r   r   Zpytorch_rootr   r   Znative_yaml_pathZtags_yaml_pathZparsed_yamlre   r"   r$   Zparsed_backend_yamlr   r   r!   r    r   rB   r&   r   r,   r     sx     
  	r   __main__)N)rm   )FFrm   T)N)8r|   r   r   rt   collectionsr   r   r   typingr   r   r   r   r	   r
   rV   Ztorchgen.api.dispatcherapirH   Ztorchgen.destr   Ztorchgen.api.typesr   Ztorchgen.code_templater   Ztorchgen.contextr   Ztorchgen.genr   r   Ztorchgen.modelr   r   r   r   r   r   Z!torchgen.selective_build.selectorr   Ztorchgen.utilsr   r   r   r   r   r   r   ra   rd   rx   r   r   rZ   r   r   __name__r&   r&   r&   r,   <module>   s      
 Z 

U 
G    
r    S
