1762 lines
62 KiB
Python
Executable File
1762 lines
62 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright 2007 Neal Norwitz
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# Portions Copyright 2007 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Generate an Abstract Syntax Tree (AST) for C++."""
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# FIXME:
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# * Tokens should never be exported, need to convert to Nodes
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# (return types, parameters, etc.)
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# * Handle static class data for templatized classes
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# * Handle casts (both C++ and C-style)
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# * Handle conditions and loops (if/else, switch, for, while/do)
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#
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# TODO much, much later:
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# * Handle #define
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# * exceptions
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try:
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# Python 3.x
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import builtins
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except ImportError:
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# Python 2.x
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import __builtin__ as builtins
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import sys
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import traceback
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from cpp import keywords
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from cpp import tokenize
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from cpp import utils
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if not hasattr(builtins, 'reversed'):
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# Support Python 2.3 and earlier.
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def reversed(seq):
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for i in range(len(seq)-1, -1, -1):
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yield seq[i]
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if not hasattr(builtins, 'next'):
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# Support Python 2.5 and earlier.
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def next(obj):
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return obj.next()
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VISIBILITY_PUBLIC, VISIBILITY_PROTECTED, VISIBILITY_PRIVATE = range(3)
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FUNCTION_NONE = 0x00
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FUNCTION_CONST = 0x01
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FUNCTION_VIRTUAL = 0x02
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FUNCTION_PURE_VIRTUAL = 0x04
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FUNCTION_CTOR = 0x08
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FUNCTION_DTOR = 0x10
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FUNCTION_ATTRIBUTE = 0x20
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FUNCTION_UNKNOWN_ANNOTATION = 0x40
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FUNCTION_THROW = 0x80
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FUNCTION_OVERRIDE = 0x100
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"""
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These are currently unused. Should really handle these properly at some point.
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TYPE_MODIFIER_INLINE = 0x010000
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TYPE_MODIFIER_EXTERN = 0x020000
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TYPE_MODIFIER_STATIC = 0x040000
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TYPE_MODIFIER_CONST = 0x080000
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TYPE_MODIFIER_REGISTER = 0x100000
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TYPE_MODIFIER_VOLATILE = 0x200000
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TYPE_MODIFIER_MUTABLE = 0x400000
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TYPE_MODIFIER_MAP = {
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'inline': TYPE_MODIFIER_INLINE,
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'extern': TYPE_MODIFIER_EXTERN,
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'static': TYPE_MODIFIER_STATIC,
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'const': TYPE_MODIFIER_CONST,
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'register': TYPE_MODIFIER_REGISTER,
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'volatile': TYPE_MODIFIER_VOLATILE,
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'mutable': TYPE_MODIFIER_MUTABLE,
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}
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"""
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_INTERNAL_TOKEN = 'internal'
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_NAMESPACE_POP = 'ns-pop'
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# TODO(nnorwitz): use this as a singleton for templated_types, etc
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# where we don't want to create a new empty dict each time. It is also const.
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class _NullDict(object):
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__contains__ = lambda self: False
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keys = values = items = iterkeys = itervalues = iteritems = lambda self: ()
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# TODO(nnorwitz): move AST nodes into a separate module.
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class Node(object):
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"""Base AST node."""
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def __init__(self, start, end):
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self.start = start
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self.end = end
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def IsDeclaration(self):
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"""Returns bool if this node is a declaration."""
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return False
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def IsDefinition(self):
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"""Returns bool if this node is a definition."""
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return False
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def IsExportable(self):
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"""Returns bool if this node exportable from a header file."""
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return False
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def Requires(self, node):
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"""Does this AST node require the definition of the node passed in?"""
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return False
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def XXX__str__(self):
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return self._StringHelper(self.__class__.__name__, '')
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def _StringHelper(self, name, suffix):
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if not utils.DEBUG:
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return '%s(%s)' % (name, suffix)
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return '%s(%d, %d, %s)' % (name, self.start, self.end, suffix)
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def __repr__(self):
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return str(self)
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class Define(Node):
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def __init__(self, start, end, name, definition):
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Node.__init__(self, start, end)
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self.name = name
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self.definition = definition
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def __str__(self):
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value = '%s %s' % (self.name, self.definition)
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return self._StringHelper(self.__class__.__name__, value)
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class Include(Node):
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def __init__(self, start, end, filename, system):
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Node.__init__(self, start, end)
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self.filename = filename
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self.system = system
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def __str__(self):
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fmt = '"%s"'
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if self.system:
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fmt = '<%s>'
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return self._StringHelper(self.__class__.__name__, fmt % self.filename)
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class Goto(Node):
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def __init__(self, start, end, label):
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Node.__init__(self, start, end)
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self.label = label
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def __str__(self):
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return self._StringHelper(self.__class__.__name__, str(self.label))
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class Expr(Node):
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def __init__(self, start, end, expr):
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Node.__init__(self, start, end)
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self.expr = expr
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def Requires(self, node):
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# TODO(nnorwitz): impl.
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return False
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def __str__(self):
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return self._StringHelper(self.__class__.__name__, str(self.expr))
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class Return(Expr):
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pass
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class Delete(Expr):
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pass
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class Friend(Expr):
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def __init__(self, start, end, expr, namespace):
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Expr.__init__(self, start, end, expr)
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self.namespace = namespace[:]
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class Using(Node):
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def __init__(self, start, end, names):
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Node.__init__(self, start, end)
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self.names = names
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def __str__(self):
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return self._StringHelper(self.__class__.__name__, str(self.names))
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class Parameter(Node):
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def __init__(self, start, end, name, parameter_type, default):
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Node.__init__(self, start, end)
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self.name = name
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self.type = parameter_type
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self.default = default
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def Requires(self, node):
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# TODO(nnorwitz): handle namespaces, etc.
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return self.type.name == node.name
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def __str__(self):
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name = str(self.type)
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suffix = '%s %s' % (name, self.name)
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if self.default:
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suffix += ' = ' + ''.join([d.name for d in self.default])
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return self._StringHelper(self.__class__.__name__, suffix)
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class _GenericDeclaration(Node):
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def __init__(self, start, end, name, namespace):
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Node.__init__(self, start, end)
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self.name = name
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self.namespace = namespace[:]
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def FullName(self):
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prefix = ''
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if self.namespace and self.namespace[-1]:
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prefix = '::'.join(self.namespace) + '::'
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return prefix + self.name
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def _TypeStringHelper(self, suffix):
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if self.namespace:
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names = [n or '<anonymous>' for n in self.namespace]
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suffix += ' in ' + '::'.join(names)
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return self._StringHelper(self.__class__.__name__, suffix)
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# TODO(nnorwitz): merge with Parameter in some way?
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class VariableDeclaration(_GenericDeclaration):
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def __init__(self, start, end, name, var_type, initial_value, namespace):
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_GenericDeclaration.__init__(self, start, end, name, namespace)
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self.type = var_type
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self.initial_value = initial_value
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def Requires(self, node):
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# TODO(nnorwitz): handle namespaces, etc.
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return self.type.name == node.name
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def ToString(self):
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"""Return a string that tries to reconstitute the variable decl."""
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suffix = '%s %s' % (self.type, self.name)
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if self.initial_value:
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suffix += ' = ' + self.initial_value
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return suffix
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def __str__(self):
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return self._StringHelper(self.__class__.__name__, self.ToString())
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class Typedef(_GenericDeclaration):
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def __init__(self, start, end, name, alias, namespace):
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_GenericDeclaration.__init__(self, start, end, name, namespace)
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self.alias = alias
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def IsDefinition(self):
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return True
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def IsExportable(self):
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return True
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def Requires(self, node):
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# TODO(nnorwitz): handle namespaces, etc.
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name = node.name
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for token in self.alias:
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if token is not None and name == token.name:
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return True
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return False
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def __str__(self):
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suffix = '%s, %s' % (self.name, self.alias)
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return self._TypeStringHelper(suffix)
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class _NestedType(_GenericDeclaration):
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def __init__(self, start, end, name, fields, namespace):
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_GenericDeclaration.__init__(self, start, end, name, namespace)
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self.fields = fields
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def IsDefinition(self):
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return True
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def IsExportable(self):
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return True
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def __str__(self):
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suffix = '%s, {%s}' % (self.name, self.fields)
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return self._TypeStringHelper(suffix)
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class Union(_NestedType):
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pass
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class Enum(_NestedType):
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pass
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class Class(_GenericDeclaration):
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def __init__(self, start, end, name, bases, templated_types, body, namespace):
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_GenericDeclaration.__init__(self, start, end, name, namespace)
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self.bases = bases
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self.body = body
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self.templated_types = templated_types
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def IsDeclaration(self):
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return self.bases is None and self.body is None
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def IsDefinition(self):
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return not self.IsDeclaration()
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def IsExportable(self):
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return not self.IsDeclaration()
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def Requires(self, node):
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# TODO(nnorwitz): handle namespaces, etc.
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if self.bases:
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for token_list in self.bases:
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# TODO(nnorwitz): bases are tokens, do name comparision.
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for token in token_list:
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if token.name == node.name:
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return True
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# TODO(nnorwitz): search in body too.
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return False
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def __str__(self):
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name = self.name
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if self.templated_types:
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name += '<%s>' % self.templated_types
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suffix = '%s, %s, %s' % (name, self.bases, self.body)
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return self._TypeStringHelper(suffix)
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class Struct(Class):
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pass
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class Function(_GenericDeclaration):
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def __init__(self, start, end, name, return_type, parameters,
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modifiers, templated_types, body, namespace):
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_GenericDeclaration.__init__(self, start, end, name, namespace)
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converter = TypeConverter(namespace)
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self.return_type = converter.CreateReturnType(return_type)
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self.parameters = converter.ToParameters(parameters)
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self.modifiers = modifiers
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self.body = body
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self.templated_types = templated_types
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def IsDeclaration(self):
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return self.body is None
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def IsDefinition(self):
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return self.body is not None
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def IsExportable(self):
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if self.return_type and 'static' in self.return_type.modifiers:
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return False
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return None not in self.namespace
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def Requires(self, node):
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if self.parameters:
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# TODO(nnorwitz): parameters are tokens, do name comparision.
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for p in self.parameters:
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if p.name == node.name:
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return True
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# TODO(nnorwitz): search in body too.
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return False
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def __str__(self):
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# TODO(nnorwitz): add templated_types.
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suffix = ('%s %s(%s), 0x%02x, %s' %
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(self.return_type, self.name, self.parameters,
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self.modifiers, self.body))
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return self._TypeStringHelper(suffix)
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class Method(Function):
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def __init__(self, start, end, name, in_class, return_type, parameters,
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modifiers, templated_types, body, namespace):
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Function.__init__(self, start, end, name, return_type, parameters,
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modifiers, templated_types, body, namespace)
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# TODO(nnorwitz): in_class could also be a namespace which can
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# mess up finding functions properly.
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self.in_class = in_class
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class Type(_GenericDeclaration):
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"""Type used for any variable (eg class, primitive, struct, etc)."""
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def __init__(self, start, end, name, templated_types, modifiers,
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reference, pointer, array):
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"""
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Args:
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name: str name of main type
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templated_types: [Class (Type?)] template type info between <>
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modifiers: [str] type modifiers (keywords) eg, const, mutable, etc.
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reference, pointer, array: bools
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"""
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_GenericDeclaration.__init__(self, start, end, name, [])
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self.templated_types = templated_types
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if not name and modifiers:
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self.name = modifiers.pop()
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self.modifiers = modifiers
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self.reference = reference
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self.pointer = pointer
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self.array = array
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def __str__(self):
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prefix = ''
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if self.modifiers:
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prefix = ' '.join(self.modifiers) + ' '
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name = str(self.name)
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if self.templated_types:
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name += '<%s>' % self.templated_types
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suffix = prefix + name
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if self.reference:
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suffix += '&'
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if self.pointer:
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suffix += '*'
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if self.array:
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suffix += '[]'
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return self._TypeStringHelper(suffix)
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# By definition, Is* are always False. A Type can only exist in
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# some sort of variable declaration, parameter, or return value.
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def IsDeclaration(self):
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return False
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def IsDefinition(self):
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return False
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def IsExportable(self):
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return False
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class TypeConverter(object):
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def __init__(self, namespace_stack):
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self.namespace_stack = namespace_stack
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def _GetTemplateEnd(self, tokens, start):
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count = 1
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end = start
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while 1:
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token = tokens[end]
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end += 1
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if token.name == '<':
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count += 1
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elif token.name == '>':
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count -= 1
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if count == 0:
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break
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return tokens[start:end-1], end
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def ToType(self, tokens):
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"""Convert [Token,...] to [Class(...), ] useful for base classes.
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For example, code like class Foo : public Bar<x, y> { ... };
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the "Bar<x, y>" portion gets converted to an AST.
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Returns:
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[Class(...), ...]
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"""
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result = []
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name_tokens = []
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reference = pointer = array = False
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def AddType(templated_types):
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# Partition tokens into name and modifier tokens.
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names = []
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modifiers = []
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for t in name_tokens:
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if keywords.IsKeyword(t.name):
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modifiers.append(t.name)
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else:
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names.append(t.name)
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name = ''.join(names)
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if name_tokens:
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result.append(Type(name_tokens[0].start, name_tokens[-1].end,
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name, templated_types, modifiers,
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reference, pointer, array))
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del name_tokens[:]
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i = 0
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end = len(tokens)
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while i < end:
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token = tokens[i]
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if token.name == '<':
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new_tokens, new_end = self._GetTemplateEnd(tokens, i+1)
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AddType(self.ToType(new_tokens))
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# If there is a comma after the template, we need to consume
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# that here otherwise it becomes part of the name.
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i = new_end
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reference = pointer = array = False
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elif token.name == ',':
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AddType([])
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reference = pointer = array = False
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elif token.name == '*':
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pointer = True
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elif token.name == '&':
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reference = True
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elif token.name == '[':
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pointer = True
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elif token.name == ']':
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pass
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else:
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name_tokens.append(token)
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i += 1
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if name_tokens:
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# No '<' in the tokens, just a simple name and no template.
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AddType([])
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return result
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def DeclarationToParts(self, parts, needs_name_removed):
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name = None
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default = []
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if needs_name_removed:
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# Handle default (initial) values properly.
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for i, t in enumerate(parts):
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if t.name == '=':
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default = parts[i+1:]
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name = parts[i-1].name
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if name == ']' and parts[i-2].name == '[':
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name = parts[i-3].name
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i -= 1
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parts = parts[:i-1]
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break
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else:
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if parts[-1].token_type == tokenize.NAME:
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name = parts.pop().name
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else:
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# TODO(nnorwitz): this is a hack that happens for code like
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# Register(Foo<T>); where it thinks this is a function call
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# but it's actually a declaration.
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name = '???'
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modifiers = []
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type_name = []
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other_tokens = []
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templated_types = []
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i = 0
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end = len(parts)
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while i < end:
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p = parts[i]
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if keywords.IsKeyword(p.name):
|
|
modifiers.append(p.name)
|
|
elif p.name == '<':
|
|
templated_tokens, new_end = self._GetTemplateEnd(parts, i+1)
|
|
templated_types = self.ToType(templated_tokens)
|
|
i = new_end - 1
|
|
# Don't add a spurious :: to data members being initialized.
|
|
next_index = i + 1
|
|
if next_index < end and parts[next_index].name == '::':
|
|
i += 1
|
|
elif p.name in ('[', ']', '='):
|
|
# These are handled elsewhere.
|
|
other_tokens.append(p)
|
|
elif p.name not in ('*', '&', '>'):
|
|
# Ensure that names have a space between them.
|
|
if (type_name and type_name[-1].token_type == tokenize.NAME and
|
|
p.token_type == tokenize.NAME):
|
|
type_name.append(tokenize.Token(tokenize.SYNTAX, ' ', 0, 0))
|
|
type_name.append(p)
|
|
else:
|
|
other_tokens.append(p)
|
|
i += 1
|
|
type_name = ''.join([t.name for t in type_name])
|
|
return name, type_name, templated_types, modifiers, default, other_tokens
|
|
|
|
def ToParameters(self, tokens):
|
|
if not tokens:
|
|
return []
|
|
|
|
result = []
|
|
name = type_name = ''
|
|
type_modifiers = []
|
|
pointer = reference = array = False
|
|
first_token = None
|
|
default = []
|
|
|
|
def AddParameter(end):
|
|
if default:
|
|
del default[0] # Remove flag.
|
|
parts = self.DeclarationToParts(type_modifiers, True)
|
|
(name, type_name, templated_types, modifiers,
|
|
unused_default, unused_other_tokens) = parts
|
|
parameter_type = Type(first_token.start, first_token.end,
|
|
type_name, templated_types, modifiers,
|
|
reference, pointer, array)
|
|
p = Parameter(first_token.start, end, name,
|
|
parameter_type, default)
|
|
result.append(p)
|
|
|
|
template_count = 0
|
|
for s in tokens:
|
|
if not first_token:
|
|
first_token = s
|
|
if s.name == '<':
|
|
template_count += 1
|
|
elif s.name == '>':
|
|
template_count -= 1
|
|
if template_count > 0:
|
|
type_modifiers.append(s)
|
|
continue
|
|
|
|
if s.name == ',':
|
|
AddParameter(s.start)
|
|
name = type_name = ''
|
|
type_modifiers = []
|
|
pointer = reference = array = False
|
|
first_token = None
|
|
default = []
|
|
elif s.name == '*':
|
|
pointer = True
|
|
elif s.name == '&':
|
|
reference = True
|
|
elif s.name == '[':
|
|
array = True
|
|
elif s.name == ']':
|
|
pass # Just don't add to type_modifiers.
|
|
elif s.name == '=':
|
|
# Got a default value. Add any value (None) as a flag.
|
|
default.append(None)
|
|
elif default:
|
|
default.append(s)
|
|
else:
|
|
type_modifiers.append(s)
|
|
AddParameter(tokens[-1].end)
|
|
return result
|
|
|
|
def CreateReturnType(self, return_type_seq):
|
|
if not return_type_seq:
|
|
return None
|
|
start = return_type_seq[0].start
|
|
end = return_type_seq[-1].end
|
|
_, name, templated_types, modifiers, default, other_tokens = \
|
|
self.DeclarationToParts(return_type_seq, False)
|
|
names = [n.name for n in other_tokens]
|
|
reference = '&' in names
|
|
pointer = '*' in names
|
|
array = '[' in names
|
|
return Type(start, end, name, templated_types, modifiers,
|
|
reference, pointer, array)
|
|
|
|
def GetTemplateIndices(self, names):
|
|
# names is a list of strings.
|
|
start = names.index('<')
|
|
end = len(names) - 1
|
|
while end > 0:
|
|
if names[end] == '>':
|
|
break
|
|
end -= 1
|
|
return start, end+1
|
|
|
|
class AstBuilder(object):
|
|
def __init__(self, token_stream, filename, in_class='', visibility=None,
|
|
namespace_stack=[]):
|
|
self.tokens = token_stream
|
|
self.filename = filename
|
|
# TODO(nnorwitz): use a better data structure (deque) for the queue.
|
|
# Switching directions of the "queue" improved perf by about 25%.
|
|
# Using a deque should be even better since we access from both sides.
|
|
self.token_queue = []
|
|
self.namespace_stack = namespace_stack[:]
|
|
self.in_class = in_class
|
|
if in_class is None:
|
|
self.in_class_name_only = None
|
|
else:
|
|
self.in_class_name_only = in_class.split('::')[-1]
|
|
self.visibility = visibility
|
|
self.in_function = False
|
|
self.current_token = None
|
|
# Keep the state whether we are currently handling a typedef or not.
|
|
self._handling_typedef = False
|
|
|
|
self.converter = TypeConverter(self.namespace_stack)
|
|
|
|
def HandleError(self, msg, token):
|
|
printable_queue = list(reversed(self.token_queue[-20:]))
|
|
sys.stderr.write('Got %s in %s @ %s %s\n' %
|
|
(msg, self.filename, token, printable_queue))
|
|
|
|
def Generate(self):
|
|
while 1:
|
|
token = self._GetNextToken()
|
|
if not token:
|
|
break
|
|
|
|
# Get the next token.
|
|
self.current_token = token
|
|
|
|
# Dispatch on the next token type.
|
|
if token.token_type == _INTERNAL_TOKEN:
|
|
if token.name == _NAMESPACE_POP:
|
|
self.namespace_stack.pop()
|
|
continue
|
|
|
|
try:
|
|
result = self._GenerateOne(token)
|
|
if result is not None:
|
|
yield result
|
|
except:
|
|
self.HandleError('exception', token)
|
|
raise
|
|
|
|
def _CreateVariable(self, pos_token, name, type_name, type_modifiers,
|
|
ref_pointer_name_seq, templated_types, value=None):
|
|
reference = '&' in ref_pointer_name_seq
|
|
pointer = '*' in ref_pointer_name_seq
|
|
array = '[' in ref_pointer_name_seq
|
|
var_type = Type(pos_token.start, pos_token.end, type_name,
|
|
templated_types, type_modifiers,
|
|
reference, pointer, array)
|
|
return VariableDeclaration(pos_token.start, pos_token.end,
|
|
name, var_type, value, self.namespace_stack)
|
|
|
|
def _GenerateOne(self, token):
|
|
if token.token_type == tokenize.NAME:
|
|
if (keywords.IsKeyword(token.name) and
|
|
not keywords.IsBuiltinType(token.name)):
|
|
if token.name == 'enum':
|
|
# Pop the next token and only put it back if it's not
|
|
# 'class'. This allows us to support the two-token
|
|
# 'enum class' keyword as if it were simply 'enum'.
|
|
next = self._GetNextToken()
|
|
if next.name != 'class':
|
|
self._AddBackToken(next)
|
|
|
|
method = getattr(self, 'handle_' + token.name)
|
|
return method()
|
|
elif token.name == self.in_class_name_only:
|
|
# The token name is the same as the class, must be a ctor if
|
|
# there is a paren. Otherwise, it's the return type.
|
|
# Peek ahead to get the next token to figure out which.
|
|
next = self._GetNextToken()
|
|
self._AddBackToken(next)
|
|
if next.token_type == tokenize.SYNTAX and next.name == '(':
|
|
return self._GetMethod([token], FUNCTION_CTOR, None, True)
|
|
# Fall through--handle like any other method.
|
|
|
|
# Handle data or function declaration/definition.
|
|
syntax = tokenize.SYNTAX
|
|
temp_tokens, last_token = \
|
|
self._GetVarTokensUpToIgnoringTemplates(syntax,
|
|
'(', ';', '{', '[')
|
|
temp_tokens.insert(0, token)
|
|
if last_token.name == '(':
|
|
# If there is an assignment before the paren,
|
|
# this is an expression, not a method.
|
|
expr = bool([e for e in temp_tokens if e.name == '='])
|
|
if expr:
|
|
new_temp = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
temp_tokens.append(last_token)
|
|
temp_tokens.extend(new_temp)
|
|
last_token = tokenize.Token(tokenize.SYNTAX, ';', 0, 0)
|
|
|
|
if last_token.name == '[':
|
|
# Handle array, this isn't a method, unless it's an operator.
|
|
# TODO(nnorwitz): keep the size somewhere.
|
|
# unused_size = self._GetTokensUpTo(tokenize.SYNTAX, ']')
|
|
temp_tokens.append(last_token)
|
|
if temp_tokens[-2].name == 'operator':
|
|
temp_tokens.append(self._GetNextToken())
|
|
else:
|
|
temp_tokens2, last_token = \
|
|
self._GetVarTokensUpTo(tokenize.SYNTAX, ';')
|
|
temp_tokens.extend(temp_tokens2)
|
|
|
|
if last_token.name == ';':
|
|
# Handle data, this isn't a method.
|
|
parts = self.converter.DeclarationToParts(temp_tokens, True)
|
|
(name, type_name, templated_types, modifiers, default,
|
|
unused_other_tokens) = parts
|
|
|
|
t0 = temp_tokens[0]
|
|
names = [t.name for t in temp_tokens]
|
|
if templated_types:
|
|
start, end = self.converter.GetTemplateIndices(names)
|
|
names = names[:start] + names[end:]
|
|
default = ''.join([t.name for t in default])
|
|
return self._CreateVariable(t0, name, type_name, modifiers,
|
|
names, templated_types, default)
|
|
if last_token.name == '{':
|
|
self._AddBackTokens(temp_tokens[1:])
|
|
self._AddBackToken(last_token)
|
|
method_name = temp_tokens[0].name
|
|
method = getattr(self, 'handle_' + method_name, None)
|
|
if not method:
|
|
# Must be declaring a variable.
|
|
# TODO(nnorwitz): handle the declaration.
|
|
return None
|
|
return method()
|
|
return self._GetMethod(temp_tokens, 0, None, False)
|
|
elif token.token_type == tokenize.SYNTAX:
|
|
if token.name == '~' and self.in_class:
|
|
# Must be a dtor (probably not in method body).
|
|
token = self._GetNextToken()
|
|
# self.in_class can contain A::Name, but the dtor will only
|
|
# be Name. Make sure to compare against the right value.
|
|
if (token.token_type == tokenize.NAME and
|
|
token.name == self.in_class_name_only):
|
|
return self._GetMethod([token], FUNCTION_DTOR, None, True)
|
|
# TODO(nnorwitz): handle a lot more syntax.
|
|
elif token.token_type == tokenize.PREPROCESSOR:
|
|
# TODO(nnorwitz): handle more preprocessor directives.
|
|
# token starts with a #, so remove it and strip whitespace.
|
|
name = token.name[1:].lstrip()
|
|
if name.startswith('include'):
|
|
# Remove "include".
|
|
name = name[7:].strip()
|
|
assert name
|
|
# Handle #include \<newline> "header-on-second-line.h".
|
|
if name.startswith('\\'):
|
|
name = name[1:].strip()
|
|
assert name[0] in '<"', token
|
|
assert name[-1] in '>"', token
|
|
system = name[0] == '<'
|
|
filename = name[1:-1]
|
|
return Include(token.start, token.end, filename, system)
|
|
if name.startswith('define'):
|
|
# Remove "define".
|
|
name = name[6:].strip()
|
|
assert name
|
|
value = ''
|
|
for i, c in enumerate(name):
|
|
if c.isspace():
|
|
value = name[i:].lstrip()
|
|
name = name[:i]
|
|
break
|
|
return Define(token.start, token.end, name, value)
|
|
if name.startswith('if') and name[2:3].isspace():
|
|
condition = name[3:].strip()
|
|
if condition.startswith('0') or condition.startswith('(0)'):
|
|
self._SkipIf0Blocks()
|
|
return None
|
|
|
|
def _GetTokensUpTo(self, expected_token_type, expected_token):
|
|
return self._GetVarTokensUpTo(expected_token_type, expected_token)[0]
|
|
|
|
def _GetVarTokensUpTo(self, expected_token_type, *expected_tokens):
|
|
last_token = self._GetNextToken()
|
|
tokens = []
|
|
while (last_token.token_type != expected_token_type or
|
|
last_token.name not in expected_tokens):
|
|
tokens.append(last_token)
|
|
last_token = self._GetNextToken()
|
|
return tokens, last_token
|
|
|
|
# Same as _GetVarTokensUpTo, but skips over '<...>' which could contain an
|
|
# expected token.
|
|
def _GetVarTokensUpToIgnoringTemplates(self, expected_token_type,
|
|
*expected_tokens):
|
|
last_token = self._GetNextToken()
|
|
tokens = []
|
|
nesting = 0
|
|
while (nesting > 0 or
|
|
last_token.token_type != expected_token_type or
|
|
last_token.name not in expected_tokens):
|
|
tokens.append(last_token)
|
|
last_token = self._GetNextToken()
|
|
if last_token.name == '<':
|
|
nesting += 1
|
|
elif last_token.name == '>':
|
|
nesting -= 1
|
|
return tokens, last_token
|
|
|
|
# TODO(nnorwitz): remove _IgnoreUpTo() it shouldn't be necesary.
|
|
def _IgnoreUpTo(self, token_type, token):
|
|
unused_tokens = self._GetTokensUpTo(token_type, token)
|
|
|
|
def _SkipIf0Blocks(self):
|
|
count = 1
|
|
while 1:
|
|
token = self._GetNextToken()
|
|
if token.token_type != tokenize.PREPROCESSOR:
|
|
continue
|
|
|
|
name = token.name[1:].lstrip()
|
|
if name.startswith('endif'):
|
|
count -= 1
|
|
if count == 0:
|
|
break
|
|
elif name.startswith('if'):
|
|
count += 1
|
|
|
|
def _GetMatchingChar(self, open_paren, close_paren, GetNextToken=None):
|
|
if GetNextToken is None:
|
|
GetNextToken = self._GetNextToken
|
|
# Assumes the current token is open_paren and we will consume
|
|
# and return up to the close_paren.
|
|
count = 1
|
|
token = GetNextToken()
|
|
while 1:
|
|
if token.token_type == tokenize.SYNTAX:
|
|
if token.name == open_paren:
|
|
count += 1
|
|
elif token.name == close_paren:
|
|
count -= 1
|
|
if count == 0:
|
|
break
|
|
yield token
|
|
token = GetNextToken()
|
|
yield token
|
|
|
|
def _GetParameters(self):
|
|
return self._GetMatchingChar('(', ')')
|
|
|
|
def GetScope(self):
|
|
return self._GetMatchingChar('{', '}')
|
|
|
|
def _GetNextToken(self):
|
|
if self.token_queue:
|
|
return self.token_queue.pop()
|
|
try:
|
|
return next(self.tokens)
|
|
except StopIteration:
|
|
return
|
|
|
|
def _AddBackToken(self, token):
|
|
if token.whence == tokenize.WHENCE_STREAM:
|
|
token.whence = tokenize.WHENCE_QUEUE
|
|
self.token_queue.insert(0, token)
|
|
else:
|
|
assert token.whence == tokenize.WHENCE_QUEUE, token
|
|
self.token_queue.append(token)
|
|
|
|
def _AddBackTokens(self, tokens):
|
|
if tokens:
|
|
if tokens[-1].whence == tokenize.WHENCE_STREAM:
|
|
for token in tokens:
|
|
token.whence = tokenize.WHENCE_QUEUE
|
|
self.token_queue[:0] = reversed(tokens)
|
|
else:
|
|
assert tokens[-1].whence == tokenize.WHENCE_QUEUE, tokens
|
|
self.token_queue.extend(reversed(tokens))
|
|
|
|
def GetName(self, seq=None):
|
|
"""Returns ([tokens], next_token_info)."""
|
|
GetNextToken = self._GetNextToken
|
|
if seq is not None:
|
|
it = iter(seq)
|
|
GetNextToken = lambda: next(it)
|
|
next_token = GetNextToken()
|
|
tokens = []
|
|
last_token_was_name = False
|
|
while (next_token.token_type == tokenize.NAME or
|
|
(next_token.token_type == tokenize.SYNTAX and
|
|
next_token.name in ('::', '<'))):
|
|
# Two NAMEs in a row means the identifier should terminate.
|
|
# It's probably some sort of variable declaration.
|
|
if last_token_was_name and next_token.token_type == tokenize.NAME:
|
|
break
|
|
last_token_was_name = next_token.token_type == tokenize.NAME
|
|
tokens.append(next_token)
|
|
# Handle templated names.
|
|
if next_token.name == '<':
|
|
tokens.extend(self._GetMatchingChar('<', '>', GetNextToken))
|
|
last_token_was_name = True
|
|
next_token = GetNextToken()
|
|
return tokens, next_token
|
|
|
|
def GetMethod(self, modifiers, templated_types):
|
|
return_type_and_name = self._GetTokensUpTo(tokenize.SYNTAX, '(')
|
|
assert len(return_type_and_name) >= 1
|
|
return self._GetMethod(return_type_and_name, modifiers, templated_types,
|
|
False)
|
|
|
|
def _GetMethod(self, return_type_and_name, modifiers, templated_types,
|
|
get_paren):
|
|
template_portion = None
|
|
if get_paren:
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
if token.name == '<':
|
|
# Handle templatized dtors.
|
|
template_portion = [token]
|
|
template_portion.extend(self._GetMatchingChar('<', '>'))
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
assert token.name == '(', token
|
|
|
|
name = return_type_and_name.pop()
|
|
# Handle templatized ctors.
|
|
if name.name == '>':
|
|
index = 1
|
|
while return_type_and_name[index].name != '<':
|
|
index += 1
|
|
template_portion = return_type_and_name[index:] + [name]
|
|
del return_type_and_name[index:]
|
|
name = return_type_and_name.pop()
|
|
elif name.name == ']':
|
|
rt = return_type_and_name
|
|
assert rt[-1].name == '[', return_type_and_name
|
|
assert rt[-2].name == 'operator', return_type_and_name
|
|
name_seq = return_type_and_name[-2:]
|
|
del return_type_and_name[-2:]
|
|
name = tokenize.Token(tokenize.NAME, 'operator[]',
|
|
name_seq[0].start, name.end)
|
|
# Get the open paren so _GetParameters() below works.
|
|
unused_open_paren = self._GetNextToken()
|
|
|
|
# TODO(nnorwitz): store template_portion.
|
|
return_type = return_type_and_name
|
|
indices = name
|
|
if return_type:
|
|
indices = return_type[0]
|
|
|
|
# Force ctor for templatized ctors.
|
|
if name.name == self.in_class and not modifiers:
|
|
modifiers |= FUNCTION_CTOR
|
|
parameters = list(self._GetParameters())
|
|
del parameters[-1] # Remove trailing ')'.
|
|
|
|
# Handling operator() is especially weird.
|
|
if name.name == 'operator' and not parameters:
|
|
token = self._GetNextToken()
|
|
assert token.name == '(', token
|
|
parameters = list(self._GetParameters())
|
|
del parameters[-1] # Remove trailing ')'.
|
|
|
|
token = self._GetNextToken()
|
|
while token.token_type == tokenize.NAME:
|
|
modifier_token = token
|
|
token = self._GetNextToken()
|
|
if modifier_token.name == 'const':
|
|
modifiers |= FUNCTION_CONST
|
|
elif modifier_token.name == '__attribute__':
|
|
# TODO(nnorwitz): handle more __attribute__ details.
|
|
modifiers |= FUNCTION_ATTRIBUTE
|
|
assert token.name == '(', token
|
|
# Consume everything between the (parens).
|
|
unused_tokens = list(self._GetMatchingChar('(', ')'))
|
|
token = self._GetNextToken()
|
|
elif modifier_token.name == 'throw':
|
|
modifiers |= FUNCTION_THROW
|
|
assert token.name == '(', token
|
|
# Consume everything between the (parens).
|
|
unused_tokens = list(self._GetMatchingChar('(', ')'))
|
|
token = self._GetNextToken()
|
|
elif modifier_token.name == 'override':
|
|
modifiers |= FUNCTION_OVERRIDE
|
|
elif modifier_token.name == modifier_token.name.upper():
|
|
# HACK(nnorwitz): assume that all upper-case names
|
|
# are some macro we aren't expanding.
|
|
modifiers |= FUNCTION_UNKNOWN_ANNOTATION
|
|
else:
|
|
self.HandleError('unexpected token', modifier_token)
|
|
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
# Handle ctor initializers.
|
|
if token.name == ':':
|
|
# TODO(nnorwitz): anything else to handle for initializer list?
|
|
while token.name != ';' and token.name != '{':
|
|
token = self._GetNextToken()
|
|
|
|
# Handle pointer to functions that are really data but look
|
|
# like method declarations.
|
|
if token.name == '(':
|
|
if parameters[0].name == '*':
|
|
# name contains the return type.
|
|
name = parameters.pop()
|
|
# parameters contains the name of the data.
|
|
modifiers = [p.name for p in parameters]
|
|
# Already at the ( to open the parameter list.
|
|
function_parameters = list(self._GetMatchingChar('(', ')'))
|
|
del function_parameters[-1] # Remove trailing ')'.
|
|
# TODO(nnorwitz): store the function_parameters.
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
assert token.name == ';', token
|
|
return self._CreateVariable(indices, name.name, indices.name,
|
|
modifiers, '', None)
|
|
# At this point, we got something like:
|
|
# return_type (type::*name_)(params);
|
|
# This is a data member called name_ that is a function pointer.
|
|
# With this code: void (sq_type::*field_)(string&);
|
|
# We get: name=void return_type=[] parameters=sq_type ... field_
|
|
# TODO(nnorwitz): is return_type always empty?
|
|
# TODO(nnorwitz): this isn't even close to being correct.
|
|
# Just put in something so we don't crash and can move on.
|
|
real_name = parameters[-1]
|
|
modifiers = [p.name for p in self._GetParameters()]
|
|
del modifiers[-1] # Remove trailing ')'.
|
|
return self._CreateVariable(indices, real_name.name, indices.name,
|
|
modifiers, '', None)
|
|
|
|
if token.name == '{':
|
|
body = list(self.GetScope())
|
|
del body[-1] # Remove trailing '}'.
|
|
else:
|
|
body = None
|
|
if token.name == '=':
|
|
token = self._GetNextToken()
|
|
|
|
if token.name == 'default' or token.name == 'delete':
|
|
# Ignore explicitly defaulted and deleted special members
|
|
# in C++11.
|
|
token = self._GetNextToken()
|
|
else:
|
|
# Handle pure-virtual declarations.
|
|
assert token.token_type == tokenize.CONSTANT, token
|
|
assert token.name == '0', token
|
|
modifiers |= FUNCTION_PURE_VIRTUAL
|
|
token = self._GetNextToken()
|
|
|
|
if token.name == '[':
|
|
# TODO(nnorwitz): store tokens and improve parsing.
|
|
# template <typename T, size_t N> char (&ASH(T (&seq)[N]))[N];
|
|
tokens = list(self._GetMatchingChar('[', ']'))
|
|
token = self._GetNextToken()
|
|
|
|
assert token.name == ';', (token, return_type_and_name, parameters)
|
|
|
|
# Looks like we got a method, not a function.
|
|
if len(return_type) > 2 and return_type[-1].name == '::':
|
|
return_type, in_class = \
|
|
self._GetReturnTypeAndClassName(return_type)
|
|
return Method(indices.start, indices.end, name.name, in_class,
|
|
return_type, parameters, modifiers, templated_types,
|
|
body, self.namespace_stack)
|
|
return Function(indices.start, indices.end, name.name, return_type,
|
|
parameters, modifiers, templated_types, body,
|
|
self.namespace_stack)
|
|
|
|
def _GetReturnTypeAndClassName(self, token_seq):
|
|
# Splitting the return type from the class name in a method
|
|
# can be tricky. For example, Return::Type::Is::Hard::To::Find().
|
|
# Where is the return type and where is the class name?
|
|
# The heuristic used is to pull the last name as the class name.
|
|
# This includes all the templated type info.
|
|
# TODO(nnorwitz): if there is only One name like in the
|
|
# example above, punt and assume the last bit is the class name.
|
|
|
|
# Ignore a :: prefix, if exists so we can find the first real name.
|
|
i = 0
|
|
if token_seq[0].name == '::':
|
|
i = 1
|
|
# Ignore a :: suffix, if exists.
|
|
end = len(token_seq) - 1
|
|
if token_seq[end-1].name == '::':
|
|
end -= 1
|
|
|
|
# Make a copy of the sequence so we can append a sentinel
|
|
# value. This is required for GetName will has to have some
|
|
# terminating condition beyond the last name.
|
|
seq_copy = token_seq[i:end]
|
|
seq_copy.append(tokenize.Token(tokenize.SYNTAX, '', 0, 0))
|
|
names = []
|
|
while i < end:
|
|
# Iterate through the sequence parsing out each name.
|
|
new_name, next = self.GetName(seq_copy[i:])
|
|
assert new_name, 'Got empty new_name, next=%s' % next
|
|
# We got a pointer or ref. Add it to the name.
|
|
if next and next.token_type == tokenize.SYNTAX:
|
|
new_name.append(next)
|
|
names.append(new_name)
|
|
i += len(new_name)
|
|
|
|
# Now that we have the names, it's time to undo what we did.
|
|
|
|
# Remove the sentinel value.
|
|
names[-1].pop()
|
|
# Flatten the token sequence for the return type.
|
|
return_type = [e for seq in names[:-1] for e in seq]
|
|
# The class name is the last name.
|
|
class_name = names[-1]
|
|
return return_type, class_name
|
|
|
|
def handle_bool(self):
|
|
pass
|
|
|
|
def handle_char(self):
|
|
pass
|
|
|
|
def handle_int(self):
|
|
pass
|
|
|
|
def handle_long(self):
|
|
pass
|
|
|
|
def handle_short(self):
|
|
pass
|
|
|
|
def handle_double(self):
|
|
pass
|
|
|
|
def handle_float(self):
|
|
pass
|
|
|
|
def handle_void(self):
|
|
pass
|
|
|
|
def handle_wchar_t(self):
|
|
pass
|
|
|
|
def handle_unsigned(self):
|
|
pass
|
|
|
|
def handle_signed(self):
|
|
pass
|
|
|
|
def _GetNestedType(self, ctor):
|
|
name = None
|
|
name_tokens, token = self.GetName()
|
|
if name_tokens:
|
|
name = ''.join([t.name for t in name_tokens])
|
|
|
|
# Handle forward declarations.
|
|
if token.token_type == tokenize.SYNTAX and token.name == ';':
|
|
return ctor(token.start, token.end, name, None,
|
|
self.namespace_stack)
|
|
|
|
if token.token_type == tokenize.NAME and self._handling_typedef:
|
|
self._AddBackToken(token)
|
|
return ctor(token.start, token.end, name, None,
|
|
self.namespace_stack)
|
|
|
|
# Must be the type declaration.
|
|
fields = list(self._GetMatchingChar('{', '}'))
|
|
del fields[-1] # Remove trailing '}'.
|
|
if token.token_type == tokenize.SYNTAX and token.name == '{':
|
|
next = self._GetNextToken()
|
|
new_type = ctor(token.start, token.end, name, fields,
|
|
self.namespace_stack)
|
|
# A name means this is an anonymous type and the name
|
|
# is the variable declaration.
|
|
if next.token_type != tokenize.NAME:
|
|
return new_type
|
|
name = new_type
|
|
token = next
|
|
|
|
# Must be variable declaration using the type prefixed with keyword.
|
|
assert token.token_type == tokenize.NAME, token
|
|
return self._CreateVariable(token, token.name, name, [], '', None)
|
|
|
|
def handle_struct(self):
|
|
# Special case the handling typedef/aliasing of structs here.
|
|
# It would be a pain to handle in the class code.
|
|
name_tokens, var_token = self.GetName()
|
|
if name_tokens:
|
|
next_token = self._GetNextToken()
|
|
is_syntax = (var_token.token_type == tokenize.SYNTAX and
|
|
var_token.name[0] in '*&')
|
|
is_variable = (var_token.token_type == tokenize.NAME and
|
|
next_token.name == ';')
|
|
variable = var_token
|
|
if is_syntax and not is_variable:
|
|
variable = next_token
|
|
temp = self._GetNextToken()
|
|
if temp.token_type == tokenize.SYNTAX and temp.name == '(':
|
|
# Handle methods declared to return a struct.
|
|
t0 = name_tokens[0]
|
|
struct = tokenize.Token(tokenize.NAME, 'struct',
|
|
t0.start-7, t0.start-2)
|
|
type_and_name = [struct]
|
|
type_and_name.extend(name_tokens)
|
|
type_and_name.extend((var_token, next_token))
|
|
return self._GetMethod(type_and_name, 0, None, False)
|
|
assert temp.name == ';', (temp, name_tokens, var_token)
|
|
if is_syntax or (is_variable and not self._handling_typedef):
|
|
modifiers = ['struct']
|
|
type_name = ''.join([t.name for t in name_tokens])
|
|
position = name_tokens[0]
|
|
return self._CreateVariable(position, variable.name, type_name,
|
|
modifiers, var_token.name, None)
|
|
name_tokens.extend((var_token, next_token))
|
|
self._AddBackTokens(name_tokens)
|
|
else:
|
|
self._AddBackToken(var_token)
|
|
return self._GetClass(Struct, VISIBILITY_PUBLIC, None)
|
|
|
|
def handle_union(self):
|
|
return self._GetNestedType(Union)
|
|
|
|
def handle_enum(self):
|
|
return self._GetNestedType(Enum)
|
|
|
|
def handle_auto(self):
|
|
# TODO(nnorwitz): warn about using auto? Probably not since it
|
|
# will be reclaimed and useful for C++0x.
|
|
pass
|
|
|
|
def handle_register(self):
|
|
pass
|
|
|
|
def handle_const(self):
|
|
pass
|
|
|
|
def handle_inline(self):
|
|
pass
|
|
|
|
def handle_extern(self):
|
|
pass
|
|
|
|
def handle_static(self):
|
|
pass
|
|
|
|
def handle_virtual(self):
|
|
# What follows must be a method.
|
|
token = token2 = self._GetNextToken()
|
|
if token.name == 'inline':
|
|
# HACK(nnorwitz): handle inline dtors by ignoring 'inline'.
|
|
token2 = self._GetNextToken()
|
|
if token2.token_type == tokenize.SYNTAX and token2.name == '~':
|
|
return self.GetMethod(FUNCTION_VIRTUAL + FUNCTION_DTOR, None)
|
|
assert token.token_type == tokenize.NAME or token.name == '::', token
|
|
return_type_and_name, _ = self._GetVarTokensUpToIgnoringTemplates(
|
|
tokenize.SYNTAX, '(') # )
|
|
return_type_and_name.insert(0, token)
|
|
if token2 is not token:
|
|
return_type_and_name.insert(1, token2)
|
|
return self._GetMethod(return_type_and_name, FUNCTION_VIRTUAL,
|
|
None, False)
|
|
|
|
def handle_volatile(self):
|
|
pass
|
|
|
|
def handle_mutable(self):
|
|
pass
|
|
|
|
def handle_public(self):
|
|
assert self.in_class
|
|
self.visibility = VISIBILITY_PUBLIC
|
|
|
|
def handle_protected(self):
|
|
assert self.in_class
|
|
self.visibility = VISIBILITY_PROTECTED
|
|
|
|
def handle_private(self):
|
|
assert self.in_class
|
|
self.visibility = VISIBILITY_PRIVATE
|
|
|
|
def handle_friend(self):
|
|
tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
assert tokens
|
|
t0 = tokens[0]
|
|
return Friend(t0.start, t0.end, tokens, self.namespace_stack)
|
|
|
|
def handle_static_cast(self):
|
|
pass
|
|
|
|
def handle_const_cast(self):
|
|
pass
|
|
|
|
def handle_dynamic_cast(self):
|
|
pass
|
|
|
|
def handle_reinterpret_cast(self):
|
|
pass
|
|
|
|
def handle_new(self):
|
|
pass
|
|
|
|
def handle_delete(self):
|
|
tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
assert tokens
|
|
return Delete(tokens[0].start, tokens[0].end, tokens)
|
|
|
|
def handle_typedef(self):
|
|
token = self._GetNextToken()
|
|
if (token.token_type == tokenize.NAME and
|
|
keywords.IsKeyword(token.name)):
|
|
# Token must be struct/enum/union/class.
|
|
method = getattr(self, 'handle_' + token.name)
|
|
self._handling_typedef = True
|
|
tokens = [method()]
|
|
self._handling_typedef = False
|
|
else:
|
|
tokens = [token]
|
|
|
|
# Get the remainder of the typedef up to the semi-colon.
|
|
tokens.extend(self._GetTokensUpTo(tokenize.SYNTAX, ';'))
|
|
|
|
# TODO(nnorwitz): clean all this up.
|
|
assert tokens
|
|
name = tokens.pop()
|
|
indices = name
|
|
if tokens:
|
|
indices = tokens[0]
|
|
if not indices:
|
|
indices = token
|
|
if name.name == ')':
|
|
# HACK(nnorwitz): Handle pointers to functions "properly".
|
|
if (len(tokens) >= 4 and
|
|
tokens[1].name == '(' and tokens[2].name == '*'):
|
|
tokens.append(name)
|
|
name = tokens[3]
|
|
elif name.name == ']':
|
|
# HACK(nnorwitz): Handle arrays properly.
|
|
if len(tokens) >= 2:
|
|
tokens.append(name)
|
|
name = tokens[1]
|
|
new_type = tokens
|
|
if tokens and isinstance(tokens[0], tokenize.Token):
|
|
new_type = self.converter.ToType(tokens)[0]
|
|
return Typedef(indices.start, indices.end, name.name,
|
|
new_type, self.namespace_stack)
|
|
|
|
def handle_typeid(self):
|
|
pass # Not needed yet.
|
|
|
|
def handle_typename(self):
|
|
pass # Not needed yet.
|
|
|
|
def _GetTemplatedTypes(self):
|
|
result = {}
|
|
tokens = list(self._GetMatchingChar('<', '>'))
|
|
len_tokens = len(tokens) - 1 # Ignore trailing '>'.
|
|
i = 0
|
|
while i < len_tokens:
|
|
key = tokens[i].name
|
|
i += 1
|
|
if keywords.IsKeyword(key) or key == ',':
|
|
continue
|
|
type_name = default = None
|
|
if i < len_tokens:
|
|
i += 1
|
|
if tokens[i-1].name == '=':
|
|
assert i < len_tokens, '%s %s' % (i, tokens)
|
|
default, unused_next_token = self.GetName(tokens[i:])
|
|
i += len(default)
|
|
else:
|
|
if tokens[i-1].name != ',':
|
|
# We got something like: Type variable.
|
|
# Re-adjust the key (variable) and type_name (Type).
|
|
key = tokens[i-1].name
|
|
type_name = tokens[i-2]
|
|
|
|
result[key] = (type_name, default)
|
|
return result
|
|
|
|
def handle_template(self):
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
assert token.name == '<', token
|
|
templated_types = self._GetTemplatedTypes()
|
|
# TODO(nnorwitz): for now, just ignore the template params.
|
|
token = self._GetNextToken()
|
|
if token.token_type == tokenize.NAME:
|
|
if token.name == 'class':
|
|
return self._GetClass(Class, VISIBILITY_PRIVATE, templated_types)
|
|
elif token.name == 'struct':
|
|
return self._GetClass(Struct, VISIBILITY_PUBLIC, templated_types)
|
|
elif token.name == 'friend':
|
|
return self.handle_friend()
|
|
self._AddBackToken(token)
|
|
tokens, last = self._GetVarTokensUpTo(tokenize.SYNTAX, '(', ';')
|
|
tokens.append(last)
|
|
self._AddBackTokens(tokens)
|
|
if last.name == '(':
|
|
return self.GetMethod(FUNCTION_NONE, templated_types)
|
|
# Must be a variable definition.
|
|
return None
|
|
|
|
def handle_true(self):
|
|
pass # Nothing to do.
|
|
|
|
def handle_false(self):
|
|
pass # Nothing to do.
|
|
|
|
def handle_asm(self):
|
|
pass # Not needed yet.
|
|
|
|
def handle_class(self):
|
|
return self._GetClass(Class, VISIBILITY_PRIVATE, None)
|
|
|
|
def _GetBases(self):
|
|
# Get base classes.
|
|
bases = []
|
|
while 1:
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.NAME, token
|
|
# TODO(nnorwitz): store kind of inheritance...maybe.
|
|
if token.name not in ('public', 'protected', 'private'):
|
|
# If inheritance type is not specified, it is private.
|
|
# Just put the token back so we can form a name.
|
|
# TODO(nnorwitz): it would be good to warn about this.
|
|
self._AddBackToken(token)
|
|
else:
|
|
# Check for virtual inheritance.
|
|
token = self._GetNextToken()
|
|
if token.name != 'virtual':
|
|
self._AddBackToken(token)
|
|
else:
|
|
# TODO(nnorwitz): store that we got virtual for this base.
|
|
pass
|
|
base, next_token = self.GetName()
|
|
bases_ast = self.converter.ToType(base)
|
|
assert len(bases_ast) == 1, bases_ast
|
|
bases.append(bases_ast[0])
|
|
assert next_token.token_type == tokenize.SYNTAX, next_token
|
|
if next_token.name == '{':
|
|
token = next_token
|
|
break
|
|
# Support multiple inheritance.
|
|
assert next_token.name == ',', next_token
|
|
return bases, token
|
|
|
|
def _GetClass(self, class_type, visibility, templated_types):
|
|
class_name = None
|
|
class_token = self._GetNextToken()
|
|
if class_token.token_type != tokenize.NAME:
|
|
assert class_token.token_type == tokenize.SYNTAX, class_token
|
|
token = class_token
|
|
else:
|
|
# Skip any macro (e.g. storage class specifiers) after the
|
|
# 'class' keyword.
|
|
next_token = self._GetNextToken()
|
|
if next_token.token_type == tokenize.NAME:
|
|
self._AddBackToken(next_token)
|
|
else:
|
|
self._AddBackTokens([class_token, next_token])
|
|
name_tokens, token = self.GetName()
|
|
class_name = ''.join([t.name for t in name_tokens])
|
|
bases = None
|
|
if token.token_type == tokenize.SYNTAX:
|
|
if token.name == ';':
|
|
# Forward declaration.
|
|
return class_type(class_token.start, class_token.end,
|
|
class_name, None, templated_types, None,
|
|
self.namespace_stack)
|
|
if token.name in '*&':
|
|
# Inline forward declaration. Could be method or data.
|
|
name_token = self._GetNextToken()
|
|
next_token = self._GetNextToken()
|
|
if next_token.name == ';':
|
|
# Handle data
|
|
modifiers = ['class']
|
|
return self._CreateVariable(class_token, name_token.name,
|
|
class_name,
|
|
modifiers, token.name, None)
|
|
else:
|
|
# Assume this is a method.
|
|
tokens = (class_token, token, name_token, next_token)
|
|
self._AddBackTokens(tokens)
|
|
return self.GetMethod(FUNCTION_NONE, None)
|
|
if token.name == ':':
|
|
bases, token = self._GetBases()
|
|
|
|
body = None
|
|
if token.token_type == tokenize.SYNTAX and token.name == '{':
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
assert token.name == '{', token
|
|
|
|
ast = AstBuilder(self.GetScope(), self.filename, class_name,
|
|
visibility, self.namespace_stack)
|
|
body = list(ast.Generate())
|
|
|
|
if not self._handling_typedef:
|
|
token = self._GetNextToken()
|
|
if token.token_type != tokenize.NAME:
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
assert token.name == ';', token
|
|
else:
|
|
new_class = class_type(class_token.start, class_token.end,
|
|
class_name, bases, None,
|
|
body, self.namespace_stack)
|
|
|
|
modifiers = []
|
|
return self._CreateVariable(class_token,
|
|
token.name, new_class,
|
|
modifiers, token.name, None)
|
|
else:
|
|
if not self._handling_typedef:
|
|
self.HandleError('non-typedef token', token)
|
|
self._AddBackToken(token)
|
|
|
|
return class_type(class_token.start, class_token.end, class_name,
|
|
bases, templated_types, body, self.namespace_stack)
|
|
|
|
def handle_namespace(self):
|
|
token = self._GetNextToken()
|
|
# Support anonymous namespaces.
|
|
name = None
|
|
if token.token_type == tokenize.NAME:
|
|
name = token.name
|
|
token = self._GetNextToken()
|
|
self.namespace_stack.append(name)
|
|
assert token.token_type == tokenize.SYNTAX, token
|
|
# Create an internal token that denotes when the namespace is complete.
|
|
internal_token = tokenize.Token(_INTERNAL_TOKEN, _NAMESPACE_POP,
|
|
None, None)
|
|
internal_token.whence = token.whence
|
|
if token.name == '=':
|
|
# TODO(nnorwitz): handle aliasing namespaces.
|
|
name, next_token = self.GetName()
|
|
assert next_token.name == ';', next_token
|
|
self._AddBackToken(internal_token)
|
|
else:
|
|
assert token.name == '{', token
|
|
tokens = list(self.GetScope())
|
|
# Replace the trailing } with the internal namespace pop token.
|
|
tokens[-1] = internal_token
|
|
# Handle namespace with nothing in it.
|
|
self._AddBackTokens(tokens)
|
|
return None
|
|
|
|
def handle_using(self):
|
|
tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
assert tokens
|
|
return Using(tokens[0].start, tokens[0].end, tokens)
|
|
|
|
def handle_explicit(self):
|
|
assert self.in_class
|
|
# Nothing much to do.
|
|
# TODO(nnorwitz): maybe verify the method name == class name.
|
|
# This must be a ctor.
|
|
return self.GetMethod(FUNCTION_CTOR, None)
|
|
|
|
def handle_this(self):
|
|
pass # Nothing to do.
|
|
|
|
def handle_operator(self):
|
|
# Pull off the next token(s?) and make that part of the method name.
|
|
pass
|
|
|
|
def handle_sizeof(self):
|
|
pass
|
|
|
|
def handle_case(self):
|
|
pass
|
|
|
|
def handle_switch(self):
|
|
pass
|
|
|
|
def handle_default(self):
|
|
token = self._GetNextToken()
|
|
assert token.token_type == tokenize.SYNTAX
|
|
assert token.name == ':'
|
|
|
|
def handle_if(self):
|
|
pass
|
|
|
|
def handle_else(self):
|
|
pass
|
|
|
|
def handle_return(self):
|
|
tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
if not tokens:
|
|
return Return(self.current_token.start, self.current_token.end, None)
|
|
return Return(tokens[0].start, tokens[0].end, tokens)
|
|
|
|
def handle_goto(self):
|
|
tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
|
|
assert len(tokens) == 1, str(tokens)
|
|
return Goto(tokens[0].start, tokens[0].end, tokens[0].name)
|
|
|
|
def handle_try(self):
|
|
pass # Not needed yet.
|
|
|
|
def handle_catch(self):
|
|
pass # Not needed yet.
|
|
|
|
def handle_throw(self):
|
|
pass # Not needed yet.
|
|
|
|
def handle_while(self):
|
|
pass
|
|
|
|
def handle_do(self):
|
|
pass
|
|
|
|
def handle_for(self):
|
|
pass
|
|
|
|
def handle_break(self):
|
|
self._IgnoreUpTo(tokenize.SYNTAX, ';')
|
|
|
|
def handle_continue(self):
|
|
self._IgnoreUpTo(tokenize.SYNTAX, ';')
|
|
|
|
|
|
def BuilderFromSource(source, filename):
|
|
"""Utility method that returns an AstBuilder from source code.
|
|
|
|
Args:
|
|
source: 'C++ source code'
|
|
filename: 'file1'
|
|
|
|
Returns:
|
|
AstBuilder
|
|
"""
|
|
return AstBuilder(tokenize.GetTokens(source), filename)
|
|
|
|
|
|
def PrintIndentifiers(filename, should_print):
|
|
"""Prints all identifiers for a C++ source file.
|
|
|
|
Args:
|
|
filename: 'file1'
|
|
should_print: predicate with signature: bool Function(token)
|
|
"""
|
|
source = utils.ReadFile(filename, False)
|
|
if source is None:
|
|
sys.stderr.write('Unable to find: %s\n' % filename)
|
|
return
|
|
|
|
#print('Processing %s' % actual_filename)
|
|
builder = BuilderFromSource(source, filename)
|
|
try:
|
|
for node in builder.Generate():
|
|
if should_print(node):
|
|
print(node.name)
|
|
except KeyboardInterrupt:
|
|
return
|
|
except:
|
|
pass
|
|
|
|
|
|
def PrintAllIndentifiers(filenames, should_print):
|
|
"""Prints all identifiers for each C++ source file in filenames.
|
|
|
|
Args:
|
|
filenames: ['file1', 'file2', ...]
|
|
should_print: predicate with signature: bool Function(token)
|
|
"""
|
|
for path in filenames:
|
|
PrintIndentifiers(path, should_print)
|
|
|
|
|
|
def main(argv):
|
|
for filename in argv[1:]:
|
|
source = utils.ReadFile(filename)
|
|
if source is None:
|
|
continue
|
|
|
|
print('Processing %s' % filename)
|
|
builder = BuilderFromSource(source, filename)
|
|
try:
|
|
entire_ast = filter(None, builder.Generate())
|
|
except KeyboardInterrupt:
|
|
return
|
|
except:
|
|
# Already printed a warning, print the traceback and continue.
|
|
traceback.print_exc()
|
|
else:
|
|
if utils.DEBUG:
|
|
for ast in entire_ast:
|
|
print(ast)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main(sys.argv)
|