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c_ast.py
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# ----------------------------------------------------------------- # ** ATTENTION ** # This code was automatically generated from _c_ast.cfg # # 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 # ----------------------------------------------------------------- import sys from typing import Any, ClassVar, IO, Optional 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: __slots__ = () """ Abstract base class for AST nodes. """ attr_names: ClassVar[tuple[str, ...]] = () coord: Optional[Any] 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: IO[str] = sys.stdout, offset: int = 0, attrnames: bool = False, showemptyattrs: bool = True, nodenames: bool = False, showcoord: bool = False, _my_node_name: Optional[str] = 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. showemptyattrs: False if you want to suppress printing empty attributes. 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: def is_empty(v): v is None or (hasattr(v, "__len__") and len(v) == 0) nvlist = [ (n, getattr(self, n)) for n in self.attr_names if showemptyattrs or not is_empty(getattr(self, n)) ] if attrnames: attrstr = ", ".join(f"{name}={value}" for name, value in nvlist) else: attrstr = ", ".join(f"{value}" for _, value in nvlist) buf.write(attrstr) if showcoord: buf.write(f" (at {self.coord})") buf.write("\n") for child_name, child in self.children(): child.show( buf, offset=offset + 2, attrnames=attrnames, showemptyattrs=showemptyattrs, nodenames=nodenames, showcoord=showcoord, _my_node_name=child_name, ) class NodeVisitor: """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: 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: Node): """Called if no explicit visitor function exists for a node. Implements preorder visiting of the node. """ for _, c in node.children(): self.visit(c) class ArrayDecl(Node): __slots__ = ("type", "dim", "dim_quals", "coord", "__weakref__") def __init__(self, type, dim, dim_quals, coord=None): self.type = type self.dim = dim self.dim_quals = dim_quals self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) if self.dim is not None: nodelist.append(("dim", self.dim)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type if self.dim is not None: yield self.dim attr_names = ("dim_quals",) class ArrayRef(Node): __slots__ = ("name", "subscript", "coord", "__weakref__") def __init__(self, name, subscript, coord=None): self.name = name self.subscript = subscript self.coord = coord def children(self): nodelist = [] if self.name is not None: nodelist.append(("name", self.name)) if self.subscript is not None: nodelist.append(("subscript", self.subscript)) return tuple(nodelist) def __iter__(self): if self.name is not None: yield self.name if self.subscript is not None: yield self.subscript attr_names = () class Assignment(Node): __slots__ = ("op", "lvalue", "rvalue", "coord", "__weakref__") def __init__(self, op, lvalue, rvalue, coord=None): self.op = op self.lvalue = lvalue self.rvalue = rvalue self.coord = coord def children(self): nodelist = [] if self.lvalue is not None: nodelist.append(("lvalue", self.lvalue)) if self.rvalue is not None: nodelist.append(("rvalue", self.rvalue)) return tuple(nodelist) def __iter__(self): if self.lvalue is not None: yield self.lvalue if self.rvalue is not None: yield self.rvalue attr_names = ("op",) class Alignas(Node): __slots__ = ("alignment", "coord", "__weakref__") def __init__(self, alignment, coord=None): self.alignment = alignment self.coord = coord def children(self): nodelist = [] if self.alignment is not None: nodelist.append(("alignment", self.alignment)) return tuple(nodelist) def __iter__(self): if self.alignment is not None: yield self.alignment attr_names = () class BinaryOp(Node): __slots__ = ("op", "left", "right", "coord", "__weakref__") def __init__(self, op, left, right, coord=None): self.op = op self.left = left self.right = right self.coord = coord def children(self): nodelist = [] if self.left is not None: nodelist.append(("left", self.left)) if self.right is not None: nodelist.append(("right", self.right)) return tuple(nodelist) def __iter__(self): if self.left is not None: yield self.left if self.right is not None: yield self.right attr_names = ("op",) class Break(Node): __slots__ = ("coord", "__weakref__") def __init__(self, coord=None): self.coord = coord def children(self): return () def __iter__(self): return yield attr_names = () class Case(Node): __slots__ = ("expr", "stmts", "coord", "__weakref__") def __init__(self, expr, stmts, coord=None): self.expr = expr self.stmts = stmts self.coord = coord def children(self): nodelist = [] if self.expr is not None: nodelist.append(("expr", self.expr)) for i, child in enumerate(self.stmts or []): nodelist.append((f"stmts[{i}]", child)) return tuple(nodelist) def __iter__(self): if self.expr is not None: yield self.expr for child in self.stmts or []: yield child attr_names = () class Cast(Node): __slots__ = ("to_type", "expr", "coord", "__weakref__") def __init__(self, to_type, expr, coord=None): self.to_type = to_type self.expr = expr self.coord = coord def children(self): nodelist = [] if self.to_type is not None: nodelist.append(("to_type", self.to_type)) if self.expr is not None: nodelist.append(("expr", self.expr)) return tuple(nodelist) def __iter__(self): if self.to_type is not None: yield self.to_type if self.expr is not None: yield self.expr attr_names = () class Compound(Node): __slots__ = ("block_items", "coord", "__weakref__") def __init__(self, block_items, coord=None): self.block_items = block_items self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.block_items or []): nodelist.append((f"block_items[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.block_items or []: yield child attr_names = () class CompoundLiteral(Node): __slots__ = ("type", "init", "coord", "__weakref__") def __init__(self, type, init, coord=None): self.type = type self.init = init self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) if self.init is not None: nodelist.append(("init", self.init)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type if self.init is not None: yield self.init attr_names = () class Constant(Node): __slots__ = ("type", "value", "coord", "__weakref__") def __init__(self, type, value, coord=None): self.type = type self.value = value self.coord = coord def children(self): nodelist = [] return tuple(nodelist) def __iter__(self): return yield attr_names = ( "type", "value", ) class Continue(Node): __slots__ = ("coord", "__weakref__") def __init__(self, coord=None): self.coord = coord def children(self): return () def __iter__(self): return yield attr_names = () class Decl(Node): __slots__ = ( "name", "quals", "align", "storage", "funcspec", "type", "init", "bitsize", "coord", "__weakref__", ) def __init__( self, name, quals, align, storage, funcspec, type, init, bitsize, coord=None ): self.name = name self.quals = quals self.align = align self.storage = storage self.funcspec = funcspec self.type = type self.init = init self.bitsize = bitsize self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) if self.init is not None: nodelist.append(("init", self.init)) if self.bitsize is not None: nodelist.append(("bitsize", self.bitsize)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type if self.init is not None: yield self.init if self.bitsize is not None: yield self.bitsize attr_names = ( "name", "quals", "align", "storage", "funcspec", ) class DeclList(Node): __slots__ = ("decls", "coord", "__weakref__") def __init__(self, decls, coord=None): self.decls = decls self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.decls or []): nodelist.append((f"decls[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.decls or []: yield child attr_names = () class Default(Node): __slots__ = ("stmts", "coord", "__weakref__") def __init__(self, stmts, coord=None): self.stmts = stmts self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.stmts or []): nodelist.append((f"stmts[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.stmts or []: yield child attr_names = () class DoWhile(Node): __slots__ = ("cond", "stmt", "coord", "__weakref__") def __init__(self, cond, stmt, coord=None): self.cond = cond self.stmt = stmt self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.stmt is not None: nodelist.append(("stmt", self.stmt)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.stmt is not None: yield self.stmt attr_names = () class EllipsisParam(Node): __slots__ = ("coord", "__weakref__") def __init__(self, coord=None): self.coord = coord def children(self): return () def __iter__(self): return yield attr_names = () class EmptyStatement(Node): __slots__ = ("coord", "__weakref__") def __init__(self, coord=None): self.coord = coord def children(self): return () def __iter__(self): return yield attr_names = () class Enum(Node): __slots__ = ("name", "values", "coord", "__weakref__") def __init__(self, name, values, coord=None): self.name = name self.values = values self.coord = coord def children(self): nodelist = [] if self.values is not None: nodelist.append(("values", self.values)) return tuple(nodelist) def __iter__(self): if self.values is not None: yield self.values attr_names = ("name",) class Enumerator(Node): __slots__ = ("name", "value", "coord", "__weakref__") def __init__(self, name, value, coord=None): self.name = name self.value = value self.coord = coord def children(self): nodelist = [] if self.value is not None: nodelist.append(("value", self.value)) return tuple(nodelist) def __iter__(self): if self.value is not None: yield self.value attr_names = ("name",) class EnumeratorList(Node): __slots__ = ("enumerators", "coord", "__weakref__") def __init__(self, enumerators, coord=None): self.enumerators = enumerators self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.enumerators or []): nodelist.append((f"enumerators[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.enumerators or []: yield child attr_names = () class ExprList(Node): __slots__ = ("exprs", "coord", "__weakref__") def __init__(self, exprs, coord=None): self.exprs = exprs self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.exprs or []): nodelist.append((f"exprs[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.exprs or []: yield child attr_names = () class FileAST(Node): __slots__ = ("ext", "coord", "__weakref__") def __init__(self, ext, coord=None): self.ext = ext self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.ext or []): nodelist.append((f"ext[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.ext or []: yield child attr_names = () class For(Node): __slots__ = ("init", "cond", "next", "stmt", "coord", "__weakref__") def __init__(self, init, cond, next, stmt, coord=None): self.init = init self.cond = cond self.next = next self.stmt = stmt self.coord = coord def children(self): nodelist = [] if self.init is not None: nodelist.append(("init", self.init)) if self.cond is not None: nodelist.append(("cond", self.cond)) if self.next is not None: nodelist.append(("next", self.next)) if self.stmt is not None: nodelist.append(("stmt", self.stmt)) return tuple(nodelist) def __iter__(self): if self.init is not None: yield self.init if self.cond is not None: yield self.cond if self.next is not None: yield self.next if self.stmt is not None: yield self.stmt attr_names = () class FuncCall(Node): __slots__ = ("name", "args", "coord", "__weakref__") def __init__(self, name, args, coord=None): self.name = name self.args = args self.coord = coord def children(self): nodelist = [] if self.name is not None: nodelist.append(("name", self.name)) if self.args is not None: nodelist.append(("args", self.args)) return tuple(nodelist) def __iter__(self): if self.name is not None: yield self.name if self.args is not None: yield self.args attr_names = () class FuncDecl(Node): __slots__ = ("args", "type", "coord", "__weakref__") def __init__(self, args, type, coord=None): self.args = args self.type = type self.coord = coord def children(self): nodelist = [] if self.args is not None: nodelist.append(("args", self.args)) if self.type is not None: nodelist.append(("type", self.type)) return tuple(nodelist) def __iter__(self): if self.args is not None: yield self.args if self.type is not None: yield self.type attr_names = () class FuncDef(Node): __slots__ = ("decl", "param_decls", "body", "coord", "__weakref__") def __init__(self, decl, param_decls, body, coord=None): self.decl = decl self.param_decls = param_decls self.body = body self.coord = coord def children(self): nodelist = [] if self.decl is not None: nodelist.append(("decl", self.decl)) if self.body is not None: nodelist.append(("body", self.body)) for i, child in enumerate(self.param_decls or []): nodelist.append((f"param_decls[{i}]", child)) return tuple(nodelist) def __iter__(self): if self.decl is not None: yield self.decl if self.body is not None: yield self.body for child in self.param_decls or []: yield child attr_names = () class Goto(Node): __slots__ = ("name", "coord", "__weakref__") def __init__(self, name, coord=None): self.name = name self.coord = coord def children(self): nodelist = [] return tuple(nodelist) def __iter__(self): return yield attr_names = ("name",) class ID(Node): __slots__ = ("name", "coord", "__weakref__") def __init__(self, name, coord=None): self.name = name self.coord = coord def children(self): nodelist = [] return tuple(nodelist) def __iter__(self): return yield attr_names = ("name",) class IdentifierType(Node): __slots__ = ("names", "coord", "__weakref__") def __init__(self, names, coord=None): self.names = names self.coord = coord def children(self): nodelist = [] return tuple(nodelist) def __iter__(self): return yield attr_names = ("names",) class If(Node): __slots__ = ("cond", "iftrue", "iffalse", "coord", "__weakref__") def __init__(self, cond, iftrue, iffalse, coord=None): self.cond = cond self.iftrue = iftrue self.iffalse = iffalse self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.iftrue is not None: nodelist.append(("iftrue", self.iftrue)) if self.iffalse is not None: nodelist.append(("iffalse", self.iffalse)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.iftrue is not None: yield self.iftrue if self.iffalse is not None: yield self.iffalse attr_names = () class InitList(Node): __slots__ = ("exprs", "coord", "__weakref__") def __init__(self, exprs, coord=None): self.exprs = exprs self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.exprs or []): nodelist.append((f"exprs[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.exprs or []: yield child attr_names = () class Label(Node): __slots__ = ("name", "stmt", "coord", "__weakref__") def __init__(self, name, stmt, coord=None): self.name = name self.stmt = stmt self.coord = coord def children(self): nodelist = [] if self.stmt is not None: nodelist.append(("stmt", self.stmt)) return tuple(nodelist) def __iter__(self): if self.stmt is not None: yield self.stmt attr_names = ("name",) class NamedInitializer(Node): __slots__ = ("name", "expr", "coord", "__weakref__") def __init__(self, name, expr, coord=None): self.name = name self.expr = expr self.coord = coord def children(self): nodelist = [] if self.expr is not None: nodelist.append(("expr", self.expr)) for i, child in enumerate(self.name or []): nodelist.append((f"name[{i}]", child)) return tuple(nodelist) def __iter__(self): if self.expr is not None: yield self.expr for child in self.name or []: yield child attr_names = () class ParamList(Node): __slots__ = ("params", "coord", "__weakref__") def __init__(self, params, coord=None): self.params = params self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.params or []): nodelist.append((f"params[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.params or []: yield child attr_names = () class PtrDecl(Node): __slots__ = ("quals", "type", "coord", "__weakref__") def __init__(self, quals, type, coord=None): self.quals = quals self.type = type self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type attr_names = ("quals",) class Return(Node): __slots__ = ("expr", "coord", "__weakref__") def __init__(self, expr, coord=None): self.expr = expr self.coord = coord def children(self): nodelist = [] if self.expr is not None: nodelist.append(("expr", self.expr)) return tuple(nodelist) def __iter__(self): if self.expr is not None: yield self.expr attr_names = () class StaticAssert(Node): __slots__ = ("cond", "message", "coord", "__weakref__") def __init__(self, cond, message, coord=None): self.cond = cond self.message = message self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.message is not None: nodelist.append(("message", self.message)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.message is not None: yield self.message attr_names = () class Struct(Node): __slots__ = ("name", "decls", "coord", "__weakref__") def __init__(self, name, decls, coord=None): self.name = name self.decls = decls self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.decls or []): nodelist.append((f"decls[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.decls or []: yield child attr_names = ("name",) class StructRef(Node): __slots__ = ("name", "type", "field", "coord", "__weakref__") def __init__(self, name, type, field, coord=None): self.name = name self.type = type self.field = field self.coord = coord def children(self): nodelist = [] if self.name is not None: nodelist.append(("name", self.name)) if self.field is not None: nodelist.append(("field", self.field)) return tuple(nodelist) def __iter__(self): if self.name is not None: yield self.name if self.field is not None: yield self.field attr_names = ("type",) class Switch(Node): __slots__ = ("cond", "stmt", "coord", "__weakref__") def __init__(self, cond, stmt, coord=None): self.cond = cond self.stmt = stmt self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.stmt is not None: nodelist.append(("stmt", self.stmt)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.stmt is not None: yield self.stmt attr_names = () class TernaryOp(Node): __slots__ = ("cond", "iftrue", "iffalse", "coord", "__weakref__") def __init__(self, cond, iftrue, iffalse, coord=None): self.cond = cond self.iftrue = iftrue self.iffalse = iffalse self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.iftrue is not None: nodelist.append(("iftrue", self.iftrue)) if self.iffalse is not None: nodelist.append(("iffalse", self.iffalse)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.iftrue is not None: yield self.iftrue if self.iffalse is not None: yield self.iffalse attr_names = () class TypeDecl(Node): __slots__ = ("declname", "quals", "align", "type", "coord", "__weakref__") def __init__(self, declname, quals, align, type, coord=None): self.declname = declname self.quals = quals self.align = align self.type = type self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type attr_names = ( "declname", "quals", "align", ) class Typedef(Node): __slots__ = ("name", "quals", "storage", "type", "coord", "__weakref__") def __init__(self, name, quals, storage, type, coord=None): self.name = name self.quals = quals self.storage = storage self.type = type self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type attr_names = ( "name", "quals", "storage", ) class Typename(Node): __slots__ = ("name", "quals", "align", "type", "coord", "__weakref__") def __init__(self, name, quals, align, type, coord=None): self.name = name self.quals = quals self.align = align self.type = type self.coord = coord def children(self): nodelist = [] if self.type is not None: nodelist.append(("type", self.type)) return tuple(nodelist) def __iter__(self): if self.type is not None: yield self.type attr_names = ( "name", "quals", "align", ) class UnaryOp(Node): __slots__ = ("op", "expr", "coord", "__weakref__") def __init__(self, op, expr, coord=None): self.op = op self.expr = expr self.coord = coord def children(self): nodelist = [] if self.expr is not None: nodelist.append(("expr", self.expr)) return tuple(nodelist) def __iter__(self): if self.expr is not None: yield self.expr attr_names = ("op",) class Union(Node): __slots__ = ("name", "decls", "coord", "__weakref__") def __init__(self, name, decls, coord=None): self.name = name self.decls = decls self.coord = coord def children(self): nodelist = [] for i, child in enumerate(self.decls or []): nodelist.append((f"decls[{i}]", child)) return tuple(nodelist) def __iter__(self): for child in self.decls or []: yield child attr_names = ("name",) class While(Node): __slots__ = ("cond", "stmt", "coord", "__weakref__") def __init__(self, cond, stmt, coord=None): self.cond = cond self.stmt = stmt self.coord = coord def children(self): nodelist = [] if self.cond is not None: nodelist.append(("cond", self.cond)) if self.stmt is not None: nodelist.append(("stmt", self.stmt)) return tuple(nodelist) def __iter__(self): if self.cond is not None: yield self.cond if self.stmt is not None: yield self.stmt attr_names = () class Pragma(Node): __slots__ = ("string", "coord", "__weakref__") def __init__(self, string, coord=None): self.string = string self.coord = coord def children(self): nodelist = [] return tuple(nodelist) def __iter__(self): return yield attr_names = ("string",)