Edit File: c_generator.cpython-36.pyc
3 g�wU5 � @ s d dl mZ G dd� de�ZdS )� )�c_astc @ s� e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� Zdd� Zd d � Zdld d �Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*dQdR� Z+dSdT� Z,dUdV� Z-dWdX� Z.dYdZ� Z/d[d\� Z0d]d^� Z1dmd_d`�Z2dadb� Z3g fdcdd�Z4dedf� Z5dgdh� Z6didj� Z7dkS )n� 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. c C s d| _ d S )N� )� indent_level)�self� r �!/usr/lib/python3.6/c_generator.py�__init__ s zCGenerator.__init__c C s d| j S )N� )r )r r r r � _make_indent s zCGenerator._make_indentc C s d|j j }t| || j�|�S )NZvisit_)� __class__�__name__�getattr� generic_visit)r �node�methodr r r �visit s zCGenerator.visitc s, |d kr dS dj � fdd�|j� D ��S d S )N� c 3 s | ]\}}� j |�V qd S )N)r )�.0Zc_name�c)r r r � <genexpr># s z+CGenerator.generic_visit.<locals>.<genexpr>)�joinZchildren)r r r )r r r s zCGenerator.generic_visitc C s |j S )N)�value)r �nr r r �visit_Constant% s zCGenerator.visit_Constantc C s |j S )N)�name)r r r r r �visit_ID( s zCGenerator.visit_IDc C s$ | j |j�}|d | j|j� d S )N�[�])�_parenthesize_unless_simpler r Z subscript)r r Zarrrefr r r �visit_ArrayRef+ s zCGenerator.visit_ArrayRefc C s" | j |j�}||j | j|j� S )N)r r �typer Zfield)r r Zsrefr r r �visit_StructRef/ s zCGenerator.visit_StructRefc C s$ | j |j�}|d | j|j� d S )N�(�))r r r �args)r r Zfrefr r r �visit_FuncCall3 s zCGenerator.visit_FuncCallc C s\ | j |j�}|jdkr d| S |jdkr0d| S |jdkrJd| j|j� S d|j|f S d S )Nzp++z%s++zp--z%s--Zsizeofz sizeof(%s)z%s%s)r �expr�opr )r r Zoperandr r r � visit_UnaryOp7 s zCGenerator.visit_UnaryOpc s< � j |j� fdd��}� j |j� fdd��}d||j|f S )Nc s � j | � S )N)�_is_simple_node)�d)r r r �<lambda>F s z+CGenerator.visit_BinaryOp.<locals>.<lambda>c s � j | � S )N)r* )r+ )r r r r, H s z%s %s %s)�_parenthesize_if�left�rightr( )r r Zlval_str�rval_strr )r r �visit_BinaryOpD s zCGenerator.visit_BinaryOpc C s* | j |jdd� �}d| j|j�|j|f S )Nc S s t | tj�S )N)� isinstancer � Assignment)r r r r r, N s z-CGenerator.visit_Assignment.<locals>.<lambda>z%s %s %s)r- Zrvaluer Zlvaluer( )r r r0 r r r �visit_AssignmentK s zCGenerator.visit_Assignmentc C s dj |j�S )Nr )r �names)r r r r r �visit_IdentifierTypeQ s z CGenerator.visit_IdentifierTypec C sJ t |tj�r d| j|� d S t |tj�r<d| j|� d S | j|�S d S )N�{�}r# r$ )r2 r ZInitListr �ExprList)r r r r r � _visit_exprT s zCGenerator._visit_exprFc C sL |r |j n| j|�}|jr.|d| j|j� 7 }|jrH|d| j|j� 7 }|S )Nz : z = )r �_generate_declZbitsizer �initr: )r r �no_type�sr r r � visit_Decl\ s zCGenerator.visit_Declc sL � j |jd �}t|j�dkrH|ddj� fdd�|jdd � D �� 7 }|S )Nr r z, c 3 s | ]}� j |d d�V qdS )T)r= N)r? )r �decl)r r r r i s z,CGenerator.visit_DeclList.<locals>.<genexpr>)r �decls�lenr )r r r> r )r r �visit_DeclListf s zCGenerator.visit_DeclListc C s2 d}|j r |dj|j �d 7 }|| j|j�7 }|S )Nr r )�storager �_generate_typer! )r r r> r r r � visit_Typedefm s zCGenerator.visit_Typedefc C s( d| j |j� d }|d | j|j� S )Nr# r$ r )rE Zto_typer r' )r r r> r r r � visit_Casts s zCGenerator.visit_Castc C s. g }x |j D ]}|j| j|�� q W dj|�S )Nz, )�exprs�appendr: r )r r �visited_subexprsr' r r r �visit_ExprListw s zCGenerator.visit_ExprListc C s. g }x |j D ]}|j| j|�� q W dj|�S )Nz, )rH rI r: r )r r rJ r' r r r �visit_InitList} s zCGenerator.visit_InitListc C s� d}|j r|d|j 7 }|jr�|d7 }xXt|jj�D ]H\}}||j 7 }|jr`|d| j|j� 7 }|t|jj�d kr4|d7 }q4W |d7 }|S )N�enumr z {z = r z, r8 )r �values� enumerateZ enumeratorsr r rB )r r r> �iZ enumeratorr r r � visit_Enum� s zCGenerator.visit_Enumc sj � j |j�}d� _� j |j�}|jrVdj� fdd�|jD ��}|d | d | d S |d | d S d S )Nr z; c 3 s | ]}� j |�V qd S )N)r )r �p)r r r r � s z+CGenerator.visit_FuncDef.<locals>.<genexpr>� )r r@ r �bodyZ param_declsr )r r r@ rT Zknrdeclsr )r r � visit_FuncDef� s zCGenerator.visit_FuncDefc C sF d}x<|j D ]2}t|tj�r,|| j|�7 }q || j|�d 7 }q W |S )Nr z; )�extr2 r ZFuncDefr )r r r> rV r r r � visit_FileAST� s zCGenerator.visit_FileASTc s` � j � d }� jd7 _|jr>|dj� fdd�|jD ��7 }� jd8 _|� j � d 7 }|S )Nz{ � r c 3 s | ]}� j |�V qd S )N)�_generate_stmt)r �stmt)r r r r � s z,CGenerator.visit_Compound.<locals>.<genexpr>z} )r r Z block_itemsr )r r r> r )r r �visit_Compound� s zCGenerator.visit_Compoundc C s dS )N�;r )r r r r r �visit_EmptyStatement� s z CGenerator.visit_EmptyStatementc s dj � fdd�|jD ��S )Nz, c 3 s | ]}� j |�V qd S )N)r )r Zparam)r r r r � s z-CGenerator.visit_ParamList.<locals>.<genexpr>)r Zparams)r r r )r r �visit_ParamList� s zCGenerator.visit_ParamListc C s& d}|j r |d| j|j � 7 }|d S )N�returnr r\ )r' r )r r r> r r r � visit_Return� s zCGenerator.visit_Returnc C s dS )Nzbreak;r )r r r r r � visit_Break� s zCGenerator.visit_Breakc C s dS )Nz continue;r )r r r r r �visit_Continue� s zCGenerator.visit_Continuec C s8 | j |j�d }|| j |j�d 7 }|| j |j�7 }|S )Nz ? z : )r: �cond�iftrue�iffalse)r r r> r r r �visit_TernaryOp� s zCGenerator.visit_TernaryOpc C sd d}|j r|| j|j �7 }|d7 }|| j|jdd�7 }|jr`|| j� d 7 }|| j|jdd�7 }|S )Nzif (z) T)� add_indentzelse )rc r rY rd re r )r r r> r r r �visit_If� s zCGenerator.visit_Ifc C s~ d}|j r|| j|j �7 }|d7 }|jr<|d| j|j� 7 }|d7 }|jr^|d| j|j� 7 }|d7 }|| j|jdd�7 }|S )Nzfor (r\ r z) T)rg )r< r rc �nextrY rZ )r r r> r r r � visit_For� s zCGenerator.visit_Forc C s: d}|j r|| j|j �7 }|d7 }|| j|jdd�7 }|S )Nzwhile (z) T)rg )rc r rY rZ )r r r> r r r � visit_While� s zCGenerator.visit_Whilec C sJ d}|| j |jdd�7 }|| j� d 7 }|jr>|| j|j�7 }|d7 }|S )Nzdo T)rg zwhile (z);)rY rZ r rc r )r r r> r r r � visit_DoWhile� s zCGenerator.visit_DoWhilec C s, d| j |j� d }|| j|jdd�7 }|S )Nzswitch (z) T)rg )r rc rY rZ )r r r> r r r � visit_Switch� s zCGenerator.visit_Switchc C s: d| j |j� d }x |jD ]}|| j|dd�7 }q W |S )Nzcase z: T)rg )r r' �stmtsrY )r r r> rZ r r r � visit_Case� s zCGenerator.visit_Casec C s* d}x |j D ]}|| j|dd�7 }q W |S )Nz default: T)rg )rn rY )r r r> rZ r r r � visit_Default� s zCGenerator.visit_Defaultc C s |j d | j|j� S )Nz: )r rY rZ )r r r r r � visit_Label� s zCGenerator.visit_Labelc C s d|j d S )Nzgoto r\ )r )r r r r r � visit_Goto� s zCGenerator.visit_Gotoc C s dS )Nz...r )r r r r r �visit_EllipsisParam� s z CGenerator.visit_EllipsisParamc C s | j |d�S )N�struct)�_generate_struct_union)r r r r r � visit_Struct s zCGenerator.visit_Structc C s | j |j�S )N)rE r! )r r r r r �visit_Typename s zCGenerator.visit_Typenamec C s | j |d�S )N�union)ru )r r r r r � visit_Union s zCGenerator.visit_Unionc C sf d}xH|j D ]>}t|tj�r,|d|j 7 }q t|tj�r |d|j d 7 }q W |d| j|j� 7 }|S )Nr �.r r z = )r r2 r �ID�Constantr r r' )r r r> r r r r �visit_NamedInitializer s z!CGenerator.visit_NamedInitializerc C s | j |�S )N)rE )r r r r r �visit_FuncDecl s zCGenerator.visit_FuncDeclc C s� |d |j pd }|jr~|d7 }|| j� 7 }| jd7 _|d7 }x |jD ]}|| j|�7 }qJW | jd8 _|| j� d 7 }|S )ze Generates code for structs and unions. name should be either 'struct' or union. r r rS rX z{ r8 )r rA r r rY )r r r r> r@ r r r ru s z!CGenerator._generate_struct_unionc C s� t |�}|r| jd7 _| j� }|r4| jd8 _|tjtjtjtjtjtj tj tj tj tj tjtjtjf kr�|| j|� d S |tjfkr�| j|�S || j|� d S dS )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. rX z; rS N)r! r r r �Declr3 ZCastZUnaryOpZBinaryOpZ TernaryOp�FuncCall�ArrayRef� StructRefr| r{ ZTypedefr9 r ZCompound)r r rg �typ�indentr r r rY ( s zCGenerator._generate_stmtc C sH d}|j rdj|j �d }|jr4|dj|j�d 7 }|| j|j�7 }|S )z& Generation from a Decl node. r r )Zfuncspecr rD rE r! )r r r> r r r r; D s zCGenerator._generate_declc C s� t |�}|tjk�rNd}|jr2|dj|j�d 7 }|| j|j �7 }|jrN|jnd}x�t|�D ]�\}}t|tj �r�|dkr�t||d tj �r�d| d }|d| j|j � d 7 }q\t|tj ��r|dkr�t||d tj �r�d| d }|d| j|j � d 7 }q\t|tj �r\|j�r,d dj|j�|f }q\d | }q\W |�rJ|d| 7 }|S |tjk�rf| j|j �S |tjk�r~| j|j �S |tjk�r�dj|j�d S |tj tj tj fk�r�| j|j ||g �S | j|�S d 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 r# r$ r r z* %s %s�*N)r! r ZTypeDeclZqualsr r ZdeclnamerO r2 Z ArrayDeclZPtrDeclZdimZFuncDeclr% r r; ZTypenamerE ZIdentifierTyper5 )r r Z modifiersr� r> ZnstrrP Zmodifierr r r rE M s@ zCGenerator._generate_typec C s& | j |�}||�r d| d S |S dS )z� Visits 'n' and returns its string representation, parenthesized if the condition function applied to the node returns True. r# r$ N)r: )r r Z conditionr> r r r r- { s zCGenerator._parenthesize_ifc s � j |� fdd��S )z. Common use case for _parenthesize_if c s � j | � S )N)r* )r+ )r r r r, � s z8CGenerator._parenthesize_unless_simple.<locals>.<lambda>)r- )r r r )r r r � s z&CGenerator._parenthesize_unless_simplec C s t |tjtjtjtjtjf�S )z~ Returns True for nodes that are "simple" - i.e. nodes that always have higher precedence than operators. )r2 r r| r{ r� r� r� )r r r r r r* � s zCGenerator._is_simple_nodeN)F)F)8r � __module__� __qualname__�__doc__r r r r r r r r" r& r) r1 r4 r6 r: r? rC rF rG rK rL rQ rU rW r[ r] r^ r` ra rb rf rh rj rk rl rm ro rp rq rr rs rv rw ry r} r~ ru rY r; rE r- r r* r r r r r sj . r N)r r �objectr r r r r �<module> s
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