o
    hO                     @   s   d dl Z d dlZd dlZd dlZd dlZd dl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 d dlmZ d dlZG dd de jZG d	d
 d
eZde	ejje
f de	ejje
f fddZdS )    N)FunctionType)castUnionCallableDictOptionalAny)Tracer)Graph)normalize_source_linesc                   @   s.   e Zd ZdZdefddZdd Zdd Zd	S )
AST_Rewriterax  
    Take a FunctionType object representing a `forward` method, then
    perform an AST rewrite to swap out nodes that are not symbolically
    traceable with a callsite to the FX alternative.

    To support swapping out an AST node, define a new `visit` method on
    that node. For more details, see:
    https://docs.python.org/3/library/ast.html#ast.NodeTransformer
    fnc                 C   s   t |\}}t|}d|}t|}t|}t| 	|}t
|dd}t|j}	t|	 }
t||	 tt|	 |
 }t|dksKJ |	|d  }dd }|||jdS )N exec   r   c                 S   s8   t | j|| j| j| jd}t|| }t| j|_|S )z?Based on https://stackoverflow.com/a/13503277/2988730 (@unutbu))nameargdefsclosure)	r   __code____name____defaults____closure__	functoolsupdate_wrappercopy__kwdefaults__)fglobalsg r   T/var/www/html/ai/venv/lib/python3.10/site-packages/torch/fx/experimental/rewriter.pychange_func_globals.   s   z1AST_Rewriter.rewrite.<locals>.change_func_globals)r   )inspectgetsourcelinesr   jointextwrapdedentastparsefix_missing_locationsvisitcompiler   __globals__setkeysr   listlen)selfr   sourcelines_sourcenormalized_str
source_astdest_astcodeglobals_dictkeys_beforenew_keysfn_compiledr!   r   r   r    rewrite   s   



zAST_Rewriter.rewritec                 C   sr   t jddd}t|t jsJ |j}t|t jsJ |jr |jnt jddd}|j|g|_	t j
|d}t ||S )z
        Swap out the Assert node (Python's `assert`) with a callsite to the
        symbolically-traceable torch._assert function
        ztorch._assert()eval)moder   N)valuekind)r@   )r'   r(   
isinstance
ExpressionbodyCallmsgConstanttestargsExprcopy_location)r1   noden	call_noderF   expr_wrapperr   r   r    visit_Assert?   s   zAST_Rewriter.visit_Assertc                 C   s4   t j|jgt jt jdt  d|j|jgg ddS )a  
        Swap out Python's AnnAssign with an Assign node where the annotation function is called.
        Example:
             Original:
             y: Tensor_Type(1,2,3, Dyn) = f2(x)
            Output:
             y = annotate(f2(x),Tensor_Type((1,2,3,Dyn)))
        annotate)idctx)funcrI   keywords)targetsr@   )r'   AssigntargetrE   NameLoadr@   
annotation)r1   rL   r   r   r    visit_AnnAssignS   s   	
zAST_Rewriter.visit_AnnAssignN)r   
__module____qualname____doc__r   r=   rP   r\   r   r   r   r    r      s
    
'r   c                       sD   e Zd Zddeejjef dee	e
ef  def fddZ  ZS )RewritingTracerNrootconcrete_argsreturnc                    s   t  t||S N)supertrace_rewrite)r1   ra   rb   	__class__r   r    rf   b   s   zRewritingTracer.tracerd   )r   r]   r^   r   torchnnModuler   r   r   strr   r
   rf   __classcell__r   r   rh   r    r`   a   s    <r`   r   rc   c                    s>   t | tjjrdtjjf fdd  | S t tt| S )Nmc                    s6   G  fdddt jj}t tt| j|_|| S )Nc                       s   e Zd Z fddZ  ZS )z9_rewrite.<locals>.rewrite_module.<locals>.RewrittenModulec                    sV   t    |j D ]\}}t|tjjr t|| j|< q
t|| j|< q
d S rd   )	re   __init____dict__itemsrB   rj   rk   rl   r   )r1   origkv)ri   rewrite_moduler   r    rp   m   s   
zB_rewrite.<locals>.rewrite_module.<locals>.RewrittenModule.__init__)r   r]   r^   rp   rn   r   rv   rh   r    RewrittenModulel   s    rx   )rj   rk   rl   r   r=   r   r   forward)ro   rx   rw   r   r    rv   k   s   z _rewrite.<locals>.rewrite_module)rB   rj   rk   rl   r   r=   r   r   )r   r   rw   r    rg   f   s   rg   )r'   r"   r%   r   r   typesr   typingr   r   r   r   r   r   torch.fx._symbolic_tracer	   torch.fx.graphr
   torch._sourcesr   rj   NodeTransformerr   r`   rk   rl   rg   r   r   r   r    <module>   s     T.