o
    ߗib                     @   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Zd dlmZ d dlmZ d dlm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)AnyCallablecastDictOptionalUnion)normalize_source_lines)Tracer)Graphc                   @   s6   e Zd ZdZejj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   \/home/ubuntu/transcripts/venv/lib/python3.10/site-packages/torch/fx/experimental/rewriter.pychange_func_globals6   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_AssertH   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_AnnAssign\   s   	
zAST_Rewriter.visit_AnnAssignN)r   
__module____qualname____doc__torch_dynamodisabler   r=   rP   r\   r   r   r   r    r      s    'r   c                       sF   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   rd   re   	__class__r   r    ri   p   s   zRewritingTracer.tracerg   )r   r]   r^   r   r`   nnModuler   r   r   strr   r   ri   __classcell__r   r   rk   r    rc   o   s    rc   r   rf   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 rg   )	rh   __init____dict__itemsrB   r`   rm   rn   r   )r1   origkv)rl   rewrite_moduler   r    rr      s   
zB_rewrite.<locals>.rewrite_module.<locals>.RewrittenModule.__init__)r   r]   r^   rr   rp   r   rx   rk   r    RewrittenModule~   s    rz   )r`   rm   rn   r   r=   r   r   forward)rq   rz   ry   r   r    rx   }   s
   	
z _rewrite.<locals>.rewrite_module)rB   r`   rm   rn   r   r=   r   r   )r   r   ry   r    rj   x   s   rj   )r'   r   r   r"   r%   typesr   typingr   r   r   r   r   r   r`   torch._sourcesr	   torch.fx._symbolic_tracer
   torch.fx.graphr   NodeTransformerr   rc   rm   rn   rj   r   r   r   r    <module>   s    ^.	