U
    e0                     @   s   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 ddlmZm	Z	 G dd	 d	e
ZG d
d deZG dd deZG dd deZG dd dZG dd dejeZeZG dd dejeZG dd dejZG dd deZdS )    )absolute_import   )Nodes)	ExprNodes)Node)AtomicExprNode)
c_ptr_typec_bint_typec                   @   s&   e Zd ZdZdZdddZdd ZdS )
TempHandleNFc                 C   s"   || _ |d kr|j| _n|| _d S N)typeis_pyobjectneeds_cleanup)selfr   r    r   =/tmp/pip-unpacked-wheel-7k3cqui1/Cython/Compiler/UtilNodes.py__init__   s    
zTempHandle.__init__c                 C   s   t || | jdS )N)handler   )TempRefNoder   )r   posr   r   r   ref   s    zTempHandle.ref)N)__name__
__module____qualname__tempneeds_xdecrefr   r   r   r   r   r   r
      s   
r
   c                   @   s>   e Zd Zdd Zdd Zdd Zdd Zd	d
 ZdddZdS )r   c                 C   s   | j | jj kst| S r   r   r   AssertionErrorr   envr   r   r   analyse_types#   s    zTempRefNode.analyse_typesc                 C   s   | j | jj kst| S r   r   r   r   r   r   analyse_target_types'   s    z TempRefNode.analyse_target_typesc                 C   s   d S r   r   r   r   r   r   analyse_target_declaration+   s    z&TempRefNode.analyse_target_declarationc                 C   s   | j j}|d krd}|S )Nz<error>)r   r   )r   resultr   r   r   calculate_result_code.   s     z!TempRefNode.calculate_result_codec                 C   s   d S r   r   r   coder   r   r   generate_result_code3   s    z TempRefNode.generate_result_codeFc                 C   sj   | j jr&|| ||  |   |d|  |r>| n||  f  || |	| d S N%s = %s;)
r   r   make_owned_referenceZput_xdecrefr#   ctypeputln	result_asgenerate_post_assignment_code
free_tempsr   rhsr&   Zoverloaded_assignmentr   r   r   generate_assignment_code6   s    

z$TempRefNode.generate_assignment_codeN)F)	r   r   r   r    r!   r"   r$   r'   r2   r   r   r   r   r      s   r   c                   @   s>   e Zd ZdZdgZdd Zdd Zdd Zd	d
 Zdd Z	dS )TempsBlockNodea_  
    Creates a block which allocates temporary variables.
    This is used by transforms to output constructs that need
    to make use of a temporary variable. Simply pass the types
    of the needed temporaries to the constructor.

    The variables can be referred to using a TempRefNode
    (which can be constructed by calling get_ref_node).
    bodyc                 C   sz   | j D ]}|jj|j|jd|_q| j| | j D ]@}|jrf|jrV|	|j|j n|
|j|j |j|j q4d S )NZ
manage_ref)Ztemps	funcstateallocate_tempr   r   r   r4   generate_execution_coder   Zput_xdecref_clearput_decref_clearrelease_temp)r   r&   r   r   r   r   r8   U   s    
 

z&TempsBlockNode.generate_execution_codec                 C   s   | j | d S r   r4   analyse_declarationsr   r   r   r   r<   b   s    z#TempsBlockNode.analyse_declarationsc                 C   s   | j || _ | S r   r4   analyse_expressionsr   r   r   r   r>   e   s    z"TempsBlockNode.analyse_expressionsc                 C   s   | j || d S r   r4   generate_function_definitionsr   r   r&   r   r   r   r@   i   s    z,TempsBlockNode.generate_function_definitionsc                 C   s   | j | d S r   )r4   annotater%   r   r   r   rB   l   s    zTempsBlockNode.annotateN)
r   r   r   __doc__child_attrsr8   r<   r>   r@   rB   r   r   r   r   r3   C   s   r3   c                   @   s   e Zd Zg ZdZd(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dd Zdd Zdd Zdd Zdd Zd)d d!Zd"d# Zd$d% Zd&d' ZdS )*ResultRefNodeFNTc                 C   sh   || _ d | _|| _|d k	r0|j| _t|dd | _|d k	r>|| _|d k	rL|| _|rVd| _| jd k	sdtd S )Nr   T)
expressionr   may_hold_nonegetattrr   is_tempr   )r   rF   r   r   rG   rI   r   r   r   r   w   s    zResultRefNode.__init__c                 C   s   | S r   r   r   r   r   r   
clone_node   s    zResultRefNode.clone_nodec                 C   s   | j r| j |S dS d S )Nr   )rF   type_dependenciesr   r   r   r   rL      s    zResultRefNode.type_dependenciesc                 C   s    || _ t|dd }|r|| _d S )Nr   )rF   rH   r   )r   rF   r   r   r   r   update_expression   s    zResultRefNode.update_expressionc                 C   s   d S r   r   r   r   r   r   r"      s    z(ResultRefNode.analyse_target_declarationc                 C   s.   | j d k	r*| j js | j || _ | j j| _| S r   )rF   r   r    r   r   r   r   r       s
    

zResultRefNode.analyse_typesc                 C   sJ   | j d k	r| j S | jd k	r:| jj d k	r.| jj S | j|S dsFtdd S )NFz"cannot infer type of ResultRefNode)r   rF   
infer_typer   r   r   r   r   rN      s    

zResultRefNode.infer_typec                 C   s   | j jsdS | jS )NF)r   r   rG   rJ   r   r   r   may_be_none   s    zResultRefNode.may_be_nonec                 C   s*   | j d k	r| j  S | jd k	r&| jjS dS NT)rF   rO   r   r   rJ   r   r   r   _DISABLED_may_be_none   s
    


z#ResultRefNode._DISABLED_may_be_nonec                 C   s   dS rP   r   rJ   r   r   r   	is_simple   s    zResultRefNode.is_simplec                 C   s:   z| j W S  tk
r2   | jd k	r.| j | _ Y nX | j S r   )result_codeAttributeErrorrF   r#   rJ   r   r   r   r#      s    
zResultRefNode.resultc                 C   s   d S r   r   r%   r   r   r   generate_evaluation_code   s    z&ResultRefNode.generate_evaluation_codec                 C   s   d S r   r   r%   r   r   r   r'      s    z"ResultRefNode.generate_result_codec                 C   s   d S r   r   r%   r   r   r   generate_disposal_code   s    z$ResultRefNode.generate_disposal_codec                 C   sp   | j jr,|| | js,||  |   |d|  |rD| n||  f  |	| |
| d S r(   )r   r   r*   lhs_of_first_assignmentZ
put_decrefr#   r+   r,   r-   r.   r/   r0   r   r   r   r2      s    

z&ResultRefNode.generate_assignment_codec                 C   s   d S r   r   r   r   r   r   allocate_temps   s    zResultRefNode.allocate_tempsc                 C   s   d S r   r   r   r   r   r   r:      s    zResultRefNode.release_tempc                 C   s   d S r   r   r%   r   r   r   r/      s    zResultRefNode.free_temps)NNNTF)F)r   r   r   subexprsrW   r   rK   rL   rM   r"   r    rN   rO   rQ   rR   r#   rU   r'   rV   r2   rX   r:   r/   r   r   r   r   rE   p   s(   
		
rE   c                   @   s$   e Zd Zdd Zdd Zdd ZdS )LetNodeMixinc                 C   s   || _ |j| _d S r   )	lazy_temprF   temp_expression)r   r[   r   r   r   set_temp_expr   s    zLetNodeMixin.set_temp_exprc                 C   s   | j | | j j| _| jjr,t| jj| _| j  | _| jrL| j 	 | _
nh| jjrb| j | n| j | |jj| jdd| _
|d| j
| j 	 f  | j | | j | | j
| j_d S )NTr5   r)   )r\   rU   r   	temp_typeZis_arrayr   Z	base_typeZresult_in_temp_result_in_tempr#   r   Zis_memoryviewsliceZmake_owned_memoryviewslicer*   r6   r7   r,   rV   r/   r[   rS   r%   r   r   r   setup_temp_expr   s$    
 zLetNodeMixin.setup_temp_exprc                 C   sJ   | j r | j| | j| n&| jjr8|| j| j |j	| j d S r   )
r_   r\   rV   r/   r^   Zneeds_refcountingr9   r   r6   r:   r%   r   r   r   teardown_temp_expr   s    zLetNodeMixin.teardown_temp_exprN)r   r   r   r]   r`   ra   r   r   r   r   rZ      s   rZ   c                   @   sT   e Zd Zddg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S )EvalWithTempExprNoder\   subexpressionc                 C   s&   |  | |j| _|| _| jj| _d S r   )r]   r   rc   r   )r   r[   rc   r   r   r   r   
  s    
zEvalWithTempExprNode.__init__c                 C   s   | j |S r   )rc   rN   r   r   r   r   rN     s    zEvalWithTempExprNode.infer_typec                 C   s
   | j  S r   )rc   rO   rJ   r   r   r   rO     s    z EvalWithTempExprNode.may_be_nonec                 C   s
   | j  S r   )rc   r#   rJ   r   r   r   r#     s    zEvalWithTempExprNode.resultc                 C   s8   | j || _ | j| j  | j|| _| jj| _| S r   )r\   r    r[   rM   rc   r   r   r   r   r   r      s
    
z"EvalWithTempExprNode.analyse_typesc                 C   s   | j | d S r   )rc   r/   r%   r   r   r   free_subexpr_temps!  s    z'EvalWithTempExprNode.free_subexpr_tempsc                 C   s   | j | d S r   )rc   rV   r%   r   r   r   generate_subexpr_disposal_code$  s    z3EvalWithTempExprNode.generate_subexpr_disposal_codec                 C   s$   |  | | j| | | d S r   )r`   rc   rU   ra   r%   r   r   r   rU   '  s    
z-EvalWithTempExprNode.generate_evaluation_codeN)r   r   r   rY   r   rN   rO   r#   r    rd   re   rU   r   r   r   r   rb     s   rb   c                   @   s<   e Zd ZddgZdd Zdd Zdd Zd	d
 Zdd ZdS )LetNoder\   r4   c                 C   s   |  | |j| _|| _d S r   )r]   r   r4   )r   r[   r4   r   r   r   r   <  s    
zLetNode.__init__c                 C   s   | j | | j| d S r   )r\   r<   r4   r   r   r   r   r<   A  s    zLetNode.analyse_declarationsc                 C   s    | j || _ | j|| _| S r   )r\   r>   r4   r   r   r   r   r>   E  s    zLetNode.analyse_expressionsc                 C   s$   |  | | j| | | d S r   )r`   r4   r8   ra   r%   r   r   r   r8   J  s    
zLetNode.generate_execution_codec                 C   s    | j || | j|| d S r   )r\   r@   r4   rA   r   r   r   r@   O  s    z%LetNode.generate_function_definitionsN)	r   r   r   rD   r   r<   r>   r8   r@   r   r   r   r   rf   0  s   
rf   c                   @   sF   e Zd Zg ZdgZdd Zdd Zdd Zdd	 Zd
d Z	dd Z
dS )TempResultFromStatNoder4   c                 C   s&   || _ |j| _|| _|j| _d| _d S )Nr   )
result_refr   r4   r   rI   )r   rh   r4   r   r   r   r   ]  s
    zTempResultFromStatNode.__init__c                 C   s   | j | d S r   r;   r   r   r   r   r<   d  s    z+TempResultFromStatNode.analyse_declarationsc                 C   s   | j || _ | S r   r=   r   r   r   r   r    g  s    z$TempResultFromStatNode.analyse_typesc                 C   s
   | j  S r   )rh   rO   rJ   r   r   r   rO   k  s    z"TempResultFromStatNode.may_be_nonec                 C   s   |   | j_| j| d S r   )r#   rh   rS   r4   r8   r%   r   r   r   r'   n  s    z+TempResultFromStatNode.generate_result_codec                 C   s   | j || d S r   r?   rA   r   r   r   r@   r  s    z4TempResultFromStatNode.generate_function_definitionsN)r   r   r   rY   rD   r   r<   r    rO   r'   r@   r   r   r   r   rg   T  s   rg   c                   @   s,   e Zd ZdZeZdd Zdd Zdd ZdS )	
HasGilNodez`
    Simple node that evaluates to 0 or 1 depending on whether we're
    in a nogil context
    c                 C   s   | S r   r   r   r   r   r   r    }  s    zHasGilNode.analyse_typesc                 C   s   |j j| _d S r   )r6   Z	gil_ownedhas_gilr%   r   r   r   r'     s    zHasGilNode.generate_result_codec                 C   s   | j r
dS dS )N10)rj   rJ   r   r   r   r$     s    z HasGilNode.calculate_result_codeN)	r   r   r   rC   r	   r   r    r'   r$   r   r   r   r   ri   v  s
   ri   N)
__future__r    r   r   r   r   Z
PyrexTypesr   r	   objectr
   r   r3   rE   rZ   ZExprNoderb   Z
LetRefNodeZStatNoderf   rg   ri   r   r   r   r   <module>   s   $-q#)$"