o
    ţalE                     @   s    d dl mZ G dd deZdS )   )c_astc                   @   s~  e Zd ZdZdd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i dddddddd d!d"d#d$d%d$d&d'd(d'd)d'd*d'd+d,d-d,d.d/d0d/d1d2d3d2d4d2iZd5d6 Zd7d8 Zd9d: Zd;d< Zdd=d>Zd?d@ ZdAdB ZdCdD ZdEdF ZdGdH ZdIdJ ZdKdL ZdMdN ZdOdP ZdQdR ZdSdT ZdUdV Z dWdX Z!dYdZ Z"d[d\ Z#d]d^ Z$d_d` Z%dadb Z&dcdd Z'dedf Z(dgdh Z)didj Z*dkdl Z+dmdn Z,dodp Z-dqdr Z.dsdt Z/dudv Z0dwdx Z1dydz Z2d{d| Z3d}d~ Z4dd Z5dd Z6dd Z7dd Z8dd Z9dd Z:dd Z;dd Z<dddZ=dd Z>g dfddZ?dd Z@dd ZAdd ZBdS )
CGeneratorz Uses the same visitor pattern as c_ast.NodeVisitor, but modified to
        return a value from each visit method, using string accumulation in
        generic_visit.
    Fc                 C   s   d| _ || _dS )z Constructs C-code generator

            reduce_parentheses:
                if True, eliminates needless parentheses on binary operators
            N)indent_levelreduce_parentheses)selfr    r   5lib/python3.10/site-packages/pycparser/c_generator.py__init__   s   
zCGenerator.__init__c                 C   s
   d| j  S N )r   r   r   r   r	   _make_indent      
zCGenerator._make_indentc                 C   s   d|j j }t| || j|S )NZvisit_)	__class____name__getattrgeneric_visit)r   nodemethodr   r   r	   visit   s   zCGenerator.visitc                    s(   |d u rdS d  fdd| D S )N c                 3   s    | ]
\}}  |V  qd S Nr   ).0Zc_namecr   r   r	   	<genexpr>'   s    z+CGenerator.generic_visit.<locals>.<genexpr>)joinchildren)r   r   r   r   r	   r   #   s   zCGenerator.generic_visitc                 C      |j S r   )valuer   nr   r   r	   visit_Constant)      zCGenerator.visit_Constantc                 C   r   r   namer!   r   r   r	   visit_ID,   r$   zCGenerator.visit_IDc                 C   s   d}|j r|d|j  7 }|S )Nz#pragmar   )string)r   r"   retr   r   r	   visit_Pragma/   s   zCGenerator.visit_Pragmac                 C   $   |  |j}|d | |j d S )N[])_parenthesize_unless_simpler&   r   Z	subscript)r   r"   Zarrrefr   r   r	   visit_ArrayRef5      zCGenerator.visit_ArrayRefc                 C   s"   |  |j}||j | |j S r   )r.   r&   typer   Zfield)r   r"   Zsrefr   r   r	   visit_StructRef9   s   zCGenerator.visit_StructRefc                 C   r+   )N())r.   r&   r   args)r   r"   Zfrefr   r   r	   visit_FuncCall=   r0   zCGenerator.visit_FuncCallc                 C   sX   |j dkrd| |j S | |j}|j dkrd| S |j dkr%d| S d|j |f S )NZsizeofz
sizeof(%s)zp++z%s++zp--z%s--z%s%s)opr   exprr.   )r   r"   operandr   r   r	   visit_UnaryOpA   s   


zCGenerator.visit_UnaryOpz||r   z&&r   |   ^   &   z==   z!=>   z>=<z<=z>>   z<<+   -*	   /%c                    s@     j fdd}  j fdd}d| j|f S )Nc                    s6    | pjot| tjoj| j j j k S r   _is_simple_noder   
isinstancer   BinaryOpprecedence_mapr7   dr"   r   r   r	   <lambda>k      
 z+CGenerator.visit_BinaryOp.<locals>.<lambda>c                    s6    | pjot| tjoj| j j j k S r   rM   rR   rT   r   r	   rU   w   rV   %s %s %s)_parenthesize_ifleftrightr7   )r   r"   Zlval_strrval_strr   rT   r	   visit_BinaryOp_   s   
zCGenerator.visit_BinaryOpc                 C   s*   |  |jdd }d| |j|j|f S )Nc                 S   s   t | tjS r   )rO   r   
Assignment)r"   r   r   r	   rU          z-CGenerator.visit_Assignment.<locals>.<lambda>rW   )rX   Zrvaluer   Zlvaluer7   )r   r"   r[   r   r   r	   visit_Assignment|   s
   zCGenerator.visit_Assignmentc                 C   s   d |jS r   )r   namesr!   r   r   r	   visit_IdentifierType      zCGenerator.visit_IdentifierTypec                 C   sF   t |tjrd| | d S t |tjrd| | d S | |S )N{}r3   r4   )rO   r   ZInitListr   ExprListr!   r   r   r	   _visit_expr   s
   
zCGenerator._visit_exprc                 C   sL   |r|j n| |}|jr|d| |j 7 }|jr$|d| |j 7 }|S )Nz :  = )r&   _generate_declZbitsizer   initrf   )r   r"   no_typesr   r   r	   
visit_Decl   s
   zCGenerator.visit_Declc                    sL     |jd }t|jdkr$|dd fdd|jdd  D  7 }|S )Nr   r   , c                 3   s    | ]
} j |d dV  qdS )T)rj   N)rl   r   declr   r   r	   r      s    z,CGenerator.visit_DeclList.<locals>.<genexpr>)r   declslenr   r   r"   rk   r   r   r	   visit_DeclList   s   zCGenerator.visit_DeclListc                 C   s2   d}|j r|d|j d 7 }|| |j7 }|S )Nr   r   )storager   _generate_typer1   rr   r   r   r	   visit_Typedef   s   zCGenerator.visit_Typedefc                 C   s,   d| j |jdd d }|d | |j S )Nr3   Femit_declnamer4   r   )ru   Zto_typer.   r8   rr   r   r   r	   
visit_Cast   s   zCGenerator.visit_Castc                 C   *   g }|j D ]
}|| | qd|S Nrm   Zexprsappendrf   r   r   r"   Zvisited_subexprsr8   r   r   r	   visit_ExprList      

zCGenerator.visit_ExprListc                 C   rz   r{   r|   r~   r   r   r	   visit_InitList   r   zCGenerator.visit_InitListc                 C      | j |ddS )Nenumr%   _generate_struct_union_enumr!   r   r   r	   
visit_Enum      zCGenerator.visit_Enumc                 C   s   d | |jS )Nz_Alignas({}))formatr   Z	alignmentr!   r   r   r	   visit_Alignas   s   zCGenerator.visit_Alignasc                 C   s8   |j sdj|  |jdS dj|  |j| |j dS )Nz{indent}{name},
)indentr&   z{indent}{name} = {value},
)r   r&   r    )r    r   r   r&   r   r!   r   r   r	   visit_Enumerator   s   
zCGenerator.visit_Enumeratorc                    sf     |j}d _  |j}|jr+d fdd|jD }|d | d | d S |d | d S )Nr   ;
c                 3       | ]}  |V  qd S r   r   )r   pr   r   r	   r          z+CGenerator.visit_FuncDef.<locals>.<genexpr>
)r   ro   r   bodyZparam_declsr   )r   r"   ro   r   Zknrdeclsr   r   r	   visit_FuncDef   s   zCGenerator.visit_FuncDefc                 C   sb   d}|j D ])}t|tjr|| |7 }qt|tjr%|| |d 7 }q|| |d 7 }q|S )Nr   r   r   )extrO   r   ZFuncDefr   ZPragma)r   r"   rk   r   r   r   r	   visit_FileAST   s   
zCGenerator.visit_FileASTc                    s`      d }  jd7  _|jr|d fdd|jD 7 }  jd8  _|   d 7 }|S )N{
r<   r   c                 3   r   r   _generate_stmt)r   stmtr   r   r	   r      r   z,CGenerator.visit_Compound.<locals>.<genexpr>z}
)r   r   Zblock_itemsr   rr   r   r   r	   visit_Compound   s   zCGenerator.visit_Compoundc                 C   s$   d|  |j d |  |j d S )Nr3   z){rd   )r   r1   ri   r!   r   r   r	   visit_CompoundLiteral   s   $z CGenerator.visit_CompoundLiteralc                 C      dS )N;r   r!   r   r   r	   visit_EmptyStatement      zCGenerator.visit_EmptyStatementc                    s   d  fdd|jD S )Nrm   c                 3   r   r   r   )r   Zparamr   r   r	   r      r   z-CGenerator.visit_ParamList.<locals>.<genexpr>)r   paramsr!   r   r   r	   visit_ParamList   s   zCGenerator.visit_ParamListc                 C   s&   d}|j r|d| |j  7 }|d S )Nreturnr   r   )r8   r   rr   r   r   r	   visit_Return   s   zCGenerator.visit_Returnc                 C   r   )Nzbreak;r   r!   r   r   r	   visit_Break   r   zCGenerator.visit_Breakc                 C   r   )Nz	continue;r   r!   r   r   r	   visit_Continue   r   zCGenerator.visit_Continuec                 C   sH   d|  |j d }|d|  |j d 7 }|d|  |j d 7 }|S )Nr3   z) ? z) : r4   )rf   condiftrueiffalserr   r   r   r	   visit_TernaryOp   s   zCGenerator.visit_TernaryOpc                 C   sd   d}|j r|| |j 7 }|d7 }|| j|jdd7 }|jr0||  d 7 }|| j|jdd7 }|S )Nzif ()
T
add_indentzelse
)r   r   r   r   r   r   rr   r   r   r	   visit_If   s   zCGenerator.visit_Ifc                 C   s~   d}|j r|| |j 7 }|d7 }|jr|d| |j 7 }|d7 }|jr/|d| |j 7 }|d7 }|| j|jdd7 }|S )Nzfor (r   r   r   Tr   )ri   r   r   nextr   r   rr   r   r   r	   	visit_For
  s   zCGenerator.visit_Forc                 C   s:   d}|j r|| |j 7 }|d7 }|| j|jdd7 }|S )Nwhile (r   Tr   )r   r   r   r   rr   r   r   r	   visit_While  s
   zCGenerator.visit_Whilec                 C   sJ   d}|| j |jdd7 }||  d 7 }|jr|| |j7 }|d7 }|S )Nzdo
Tr   r   z);)r   r   r   r   r   rr   r   r   r	   visit_DoWhile  s   zCGenerator.visit_DoWhilec                 C   s>   d}||  |j7 }|jr|d7 }||  |j7 }|d7 }|S )Nz_Static_assert(,r4   )r   r   messagerr   r   r   r	   visit_StaticAssert$  s   zCGenerator.visit_StaticAssertc                 C   s,   d|  |j d }|| j|jdd7 }|S )Nzswitch (r   Tr   )r   r   r   r   rr   r   r   r	   visit_Switch-  s   zCGenerator.visit_Switchc                 C   s6   d|  |j d }|jD ]}|| j|dd7 }q|S )Nzcase :
Tr   )r   r8   stmtsr   r   r"   rk   r   r   r   r	   
visit_Case2  s   
zCGenerator.visit_Casec                 C   s&   d}|j D ]}|| j|dd7 }q|S )Nz	default:
Tr   )r   r   r   r   r   r	   visit_Default8  s   
zCGenerator.visit_Defaultc                 C   s   |j d | |j S )Nr   )r&   r   r   r!   r   r   r	   visit_Label>  s   zCGenerator.visit_Labelc                 C   s   d|j  d S )Nzgoto r   r%   r!   r   r   r	   
visit_GotoA  r   zCGenerator.visit_Gotoc                 C   r   )Nz...r   r!   r   r   r	   visit_EllipsisParamD  r   zCGenerator.visit_EllipsisParamc                 C      |  |dS )Nstructr   r!   r   r   r	   visit_StructG  rb   zCGenerator.visit_Structc                 C   s   |  |jS r   )ru   r1   r!   r   r   r	   visit_TypenameJ  rb   zCGenerator.visit_Typenamec                 C   r   )Nunionr   r!   r   r   r	   visit_UnionM  rb   zCGenerator.visit_Unionc                 C   sZ   d}|j D ]}t|tjr|d|j  7 }q|d| | d 7 }q|d| |j 7 }|S )Nr   .r,   r-   rg   )r&   rO   r   IDr   rf   r8   )r   r"   rk   r&   r   r   r	   visit_NamedInitializerP  s   
z!CGenerator.visit_NamedInitializerc                 C   s
   |  |S r   ru   r!   r   r   r	   visit_FuncDeclZ  r   zCGenerator.visit_FuncDeclc                 C   r   NFrw   r   r!   r   r   r	   visit_ArrayDecl]  r   zCGenerator.visit_ArrayDeclc                 C   r   r   r   r!   r   r   r	   visit_TypeDecl`  r   zCGenerator.visit_TypeDeclc                 C   r   r   r   r!   r   r   r	   visit_PtrDeclc  r   zCGenerator.visit_PtrDeclc                 C   s   |dv r|j }| j}n|dksJ |jdu rdn|jj}| j}|d |jp&d }|durV|d7 }||  7 }|  jd7  _|d7 }|||7 }|  jd8  _||  d	 7 }|S )
zq Generates code for structs, unions, and enums. name should be
            'struct', 'union', or 'enum'.
        )r   r   r   Nr   r   r   r<   r   rd   )rp   _generate_struct_union_bodyvaluesZenumerators_generate_enum_bodyr&   r   r   )r   r"   r&   membersZbody_functionrk   r   r   r	   r   f  s    z&CGenerator._generate_struct_union_enumc                    s   d  fdd|D S )Nr   c                 3   r   r   r   rn   r   r   r	   r     r   z9CGenerator._generate_struct_union_body.<locals>.<genexpr>r   r   r   r   r   r	   r   ~  s   z&CGenerator._generate_struct_union_bodyc                    s$   d  fdd|D d d d S )Nr   c                 3   r   r   r   )r   r    r   r   r	   r     r   z1CGenerator._generate_enum_body.<locals>.<genexpr>r   r   r   r   r   r	   r     s   $zCGenerator._generate_enum_bodyc                 C   s   t |}|r|  jd7  _|  }|r|  jd8  _|tjtjtjtjtjtj	tj
tjtjtjtjtjtjfv rA|| | d S |tjfv rL| |S |tjfv rY|| | S || | d S )z Generation from a statement node. This method exists as a wrapper
            for individual visit_* methods to handle different treatment of
            some statements in this context.
        r<   r   r   )r1   r   r   r   Declr]   ZCastZUnaryOprP   Z	TernaryOpFuncCallArrayRef	StructRefConstantr   ZTypedefre   r   ZCompoundZIf)r   r"   r   typr   r   r   r	   r     s    
zCGenerator._generate_stmtc                 C   sf   d}|j rd|j d }|jr|d|jd 7 }|jr)|| |jd d 7 }|| |j7 }|S )z& Generation from a Decl node.
        r   r   r   )Zfuncspecr   rt   Zalignr   ru   r1   rr   r   r   r	   rh     s   zCGenerator._generate_declTc           	      C   s  t |}|tjkrd}|jr|d|jd 7 }|| |j 7 }|jr(|r(|jnd}t|D ]\}}t|tj	rh|dkrLt||d  tj
rLd| d }|d7 }|jr]|d|jd 7 }|| |jd 7 }q.t|tjr|dkrt||d  tj
rd| d }|d| |j d 7 }q.t|tj
r|jrd	d|j|rd| ndf }q.d
| }q.|r|d| 7 }|S |tjkr| |j S |tjkr| j|j |dS |tjkrd|jd S |tj	tj
tjfv r| j|j ||g |dS | |S )z Recursive generation from a type node. n is the type node.
            modifiers collects the PtrDecl, ArrayDecl and FuncDecl modifiers
            encountered on the way down to a TypeDecl, to allow proper
            generation from it.
        r   r   r   r   r3   r4   r,   r-   z* %s%srI   rw   )r1   r   ZTypeDeclZqualsr   r   Zdeclname	enumeraterO   Z	ArrayDeclZPtrDeclZ	dim_qualsZdimZFuncDeclr5   r   rh   ZTypenameru   ZIdentifierTyper`   )	r   r"   	modifiersrx   r   rk   Znstrimodifierr   r   r	   ru     sT   




zCGenerator._generate_typec                 C   s"   |  |}||rd| d S |S )z Visits 'n' and returns its string representation, parenthesized
            if the condition function applied to the node returns True.
        r3   r4   )rf   )r   r"   Z	conditionrk   r   r   r	   rX     s   
zCGenerator._parenthesize_ifc                    s     | fddS )z. Common use case for _parenthesize_if
        c                    s     |  S r   )rN   rR   r   r   r	   rU     r^   z8CGenerator._parenthesize_unless_simple.<locals>.<lambda>)rX   r!   r   r   r	   r.     s   z&CGenerator._parenthesize_unless_simplec                 C   s   t |tjtjtjtjtjfS )z~ Returns True for nodes that are "simple" - i.e. nodes that always
            have higher precedence than operators.
        )rO   r   r   r   r   r   r   r!   r   r   r	   rN     s   zCGenerator._is_simple_nodeN)F)Cr   
__module____qualname____doc__r
   r   r   r   r#   r'   r*   r/   r2   r6   r:   rQ   r\   r_   ra   rf   rl   rs   rv   ry   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   rh   ru   rX   r.   rN   r   r   r   r	   r      s    
				




	
	


5
r   N)r   r   objectr   r   r   r   r	   <module>   s   