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_ast_gen.cpython-39.pyc
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a ��_^o) � @ s@ d dl Z d dlmZ G dd� de�ZG dd� de�ZdZdZdS ) � N)�Templatec @ s( e Zd Zd dd�Zd dd�Zdd� ZdS ) �ASTCodeGenerator� _c_ast.cfgc C s || _ dd� | �|�D �| _dS )zN Initialize the code generator from a configuration file. c S s g | ]\}}t ||��qS � )�NodeCfg)�.0�name�contentsr r �6/usr/lib/python3.9/site-packages/pycparser/_ast_gen.py� <listcomp> s �z-ASTCodeGenerator.__init__.<locals>.<listcomp>N)� cfg_filename� parse_cfgfile�node_cfg)�selfr r r r �__init__ s �zASTCodeGenerator.__init__Nc C sD t t�j| jd�}|t7 }| jD ]}||�� d 7 }q |�|� dS )z< Generates the code into file, an open file buffer. )r z N)r �_PROLOGUE_COMMENTZ substituter �_PROLOGUE_CODEr �generate_source�write)r �file�srcr r r r �generate s � zASTCodeGenerator.generatec c s� t |d���}|D ]�}|�� }|r|�d�r,q|�d�}|�d�}|�d�}|dk sb||ksb||krrtd||f ��|d|� }||d |� }|r�d d � |�d �D �ng } || fV qW d � n1 s�0 Y dS ) ze Parse the configuration file and yield pairs of (name, contents) for each node. �r�#�:�[�]� zInvalid line in %s: %s Nc S s g | ] }|� � �qS r )�strip)r �vr r r r 7 � z2ASTCodeGenerator.parse_cfgfile.<locals>.<listcomp>�,)�openr � startswith�find� RuntimeError�split) r �filename�f�lineZcolon_iZ lbracket_iZ rbracket_ir �valZvallistr r r r & s z ASTCodeGenerator.parse_cfgfile)r )N)�__name__� __module__� __qualname__r r r r r r r r s r c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )r z� Node configuration. name: node name contents: a list of contents - attributes and child nodes See comment at the top of the configuration file for details. c C s~ || _ g | _g | _g | _g | _|D ]V}|�d�}| j�|� |�d�rT| j�|� q"|�d�rl| j�|� q"| j�|� q"d S )N�*z**)r � all_entries�attr�child� seq_child�rstrip�append�endswith)r r r �entryZ clean_entryr r r r C s zNodeCfg.__init__c C s< | � � }|d| �� 7 }|d| �� 7 }|d| �� 7 }|S )N� )� _gen_init� _gen_children� _gen_iter�_gen_attr_names�r r r r r r U s zNodeCfg.generate_sourcec C s� d| j }| jrDd�| j�}d�dd� | jD ��}|d7 }d| }nd}d}|d | 7 }|d | 7 }| jd g D ]}|d ||f 7 }qp|S ) Nzclass %s(Node): z, c s s | ]}d � |�V qdS )z'{0}'N)�format)r �er r r � <genexpr>b r z$NodeCfg._gen_init.<locals>.<genexpr>z, 'coord', '__weakref__'z(self, %s, coord=None)z'coord', '__weakref__'z(self, coord=None)z __slots__ = (%s) z def __init__%s: Zcoordz self.%s = %s )r r/ �join)r r �args�slotsZarglistr r r r r8 ] s zNodeCfg._gen_initc C sd d}| j rX|d7 }| jD ]}|dt|d� 7 }q| jD ]}|dt|d� 7 }q6|d7 }n|d7 }|S )Nz def children(self): z nodelist = [] zV if self.%(child)s is not None: nodelist.append(("%(child)s", self.%(child)s)) �r1 zu for i, child in enumerate(self.%(child)s or []): nodelist.append(("%(child)s[%%d]" %% i, child)) z return tuple(nodelist) z return () �r/ r1 �dictr2 �r r r1 r2 r r r r9 q s � � zNodeCfg._gen_childrenc C sh d}| j r\| jD ]}|dt|d� 7 }q| jD ]}|dt|d� 7 }q.| jsd| jsd|d7 }n|d7 }|S )Nz def __iter__(self): zH if self.%(child)s is not None: yield self.%(child)s rC zE for child in (self.%(child)s or []): yield child z return yield rD rF r r r r: � s( � � ��zNodeCfg._gen_iterc C s" dd� dd� | jD �� d }|S )Nz attr_names = (� c s s | ]}d | V qdS )z%r, Nr )r Znmr r r r? � r z*NodeCfg._gen_attr_names.<locals>.<genexpr>�))r@ r0 r< r r r r; � s zNodeCfg._gen_attr_namesN) r+ r, r- �__doc__r r r8 r9 r: r; r r r r r ; s r a� #----------------------------------------------------------------- # ** ATTENTION ** # This code was automatically generated from the file: # $cfg_filename # # Do not modify it directly. Modify the configuration file and # run the generator again. # ** ** *** ** ** # # pycparser: c_ast.py # # AST Node classes. # # Eli Bendersky [https://eli.thegreenplace.net/] # License: BSD #----------------------------------------------------------------- aX import sys def _repr(obj): """ Get the representation of an object, with dedicated pprint-like format for lists. """ if isinstance(obj, list): return '[' + (',\n '.join((_repr(e).replace('\n', '\n ') for e in obj))) + '\n]' else: return repr(obj) class Node(object): __slots__ = () """ Abstract base class for AST nodes. """ def __repr__(self): """ Generates a python representation of the current node """ result = self.__class__.__name__ + '(' indent = '' separator = '' for name in self.__slots__[:-2]: result += separator result += indent result += name + '=' + (_repr(getattr(self, name)).replace('\n', '\n ' + (' ' * (len(name) + len(self.__class__.__name__))))) separator = ',' indent = '\n ' + (' ' * len(self.__class__.__name__)) result += indent + ')' return result def children(self): """ A sequence of all children that are Nodes """ pass def show(self, buf=sys.stdout, offset=0, attrnames=False, nodenames=False, showcoord=False, _my_node_name=None): """ Pretty print the Node and all its attributes and children (recursively) to a buffer. buf: Open IO buffer into which the Node is printed. offset: Initial offset (amount of leading spaces) attrnames: True if you want to see the attribute names in name=value pairs. False to only see the values. nodenames: True if you want to see the actual node names within their parents. showcoord: Do you want the coordinates of each Node to be displayed. """ lead = ' ' * offset if nodenames and _my_node_name is not None: buf.write(lead + self.__class__.__name__+ ' <' + _my_node_name + '>: ') else: buf.write(lead + self.__class__.__name__+ ': ') if self.attr_names: if attrnames: nvlist = [(n, getattr(self,n)) for n in self.attr_names] attrstr = ', '.join('%s=%s' % nv for nv in nvlist) else: vlist = [getattr(self, n) for n in self.attr_names] attrstr = ', '.join('%s' % v for v in vlist) buf.write(attrstr) if showcoord: buf.write(' (at %s)' % self.coord) buf.write('\n') for (child_name, child) in self.children(): child.show( buf, offset=offset + 2, attrnames=attrnames, nodenames=nodenames, showcoord=showcoord, _my_node_name=child_name) class NodeVisitor(object): """ A base NodeVisitor class for visiting c_ast nodes. Subclass it and define your own visit_XXX methods, where XXX is the class name you want to visit with these methods. For example: class ConstantVisitor(NodeVisitor): def __init__(self): self.values = [] def visit_Constant(self, node): self.values.append(node.value) Creates a list of values of all the constant nodes encountered below the given node. To use it: cv = ConstantVisitor() cv.visit(node) Notes: * generic_visit() will be called for AST nodes for which no visit_XXX method was defined. * The children of nodes for which a visit_XXX was defined will not be visited - if you need this, call generic_visit() on the node. You can use: NodeVisitor.generic_visit(self, node) * Modeled after Python's own AST visiting facilities (the ast module of Python 3.0) """ _method_cache = None def visit(self, node): """ Visit a node. """ if self._method_cache is None: self._method_cache = {} visitor = self._method_cache.get(node.__class__.__name__, None) if visitor is None: method = 'visit_' + node.__class__.__name__ visitor = getattr(self, method, self.generic_visit) self._method_cache[node.__class__.__name__] = visitor return visitor(node) def generic_visit(self, node): """ Called if no explicit visitor function exists for a node. Implements preorder visiting of the node. """ for c in node: self.visit(c) )Zpprint�stringr �objectr r r r r r r r �<module> s *o�