declarations.py

C++的一个好库。。。现在很流行

    '''A class' constructor.
    '''

    def __init__(self, name, class_, params, visib):
        Method.__init__(self, name, class_, None, params, visib, False, False, False, False)


    def IsDefault(self):
        '''Returns True if this constructor is a default constructor.
        '''
        return len(self.parameters) == 0 and self.visibility == Scope.public


    def IsCopy(self):
        '''Returns True if this constructor is a copy constructor.
        '''
        if len(self.parameters) != 1:
            return False
        param = self.parameters[0]
        class_as_param = self.parameters[0].name == self.class_
        param_reference = isinstance(param, ReferenceType) 
        is_public = self.visibility == Scope.public
        return param_reference and class_as_param and param.const and is_public
        

    def PointerDeclaration(self, force=False):
        return ''


#==============================================================================
# Destructor
#==============================================================================
class Destructor(Method):
    'The destructor of a class.'

    def __init__(self, name, class_, visib, virtual):
        Method.__init__(self, name, class_, None, [], visib, virtual, False, False, False)

    def FullName(self):
        return self.class_ + '::~' + self.name


    def PointerDeclaration(self, force=False):
        return ''



#==============================================================================
# ClassOperator
#==============================================================================
class ClassOperator(Method):
    'A custom operator in a class.'
    
    def FullName(self):
        return self.class_ + '::operator ' + self.name



#==============================================================================
# ConverterOperator
#==============================================================================
class ConverterOperator(ClassOperator):
    'An operator in the form "operator OtherClass()".'
    
    def FullName(self):
        return self.class_ + '::operator ' + self.result.FullName()

    

#==============================================================================
# Type
#==============================================================================
class Type(Declaration):
    '''Represents the type of a variable or parameter.
    @ivar _const: if the type is constant.
    @ivar _default: if this type has a default value associated with it.
    @ivar _volatile: if this type was declared with the keyword volatile.
    @ivar _restricted: if this type was declared with the keyword restricted.
    @ivar _suffix: Suffix to get the full type name. '*' for pointers, for
    example.
    '''

    def __init__(self, name, const=False, default=None, suffix=''):
        Declaration.__init__(self, name, None)
        # whatever the type is constant or not
        self.const = const
        # used when the Type is a function argument
        self.default = default
        self.volatile = False
        self.restricted = False
        self.suffix = suffix

    def __repr__(self):
        if self.const:
            const = 'const '
        else:
            const = ''
        return '<Type ' + const + self.name + '>'


    def FullName(self):
        if self.const:
            const = 'const '
        else:
            const = ''
        return const + self.name + self.suffix


#==============================================================================
# ArrayType
#==============================================================================
class ArrayType(Type):
    '''Represents an array.
    @ivar min: the lower bound of the array, usually 0. Can be None.
    @ivar max: the upper bound of the array. Can be None.
    '''

    def __init__(self, name, const, min, max): 
        'min and max can be None.'
        Type.__init__(self, name, const)
        self.min = min
        self.max = max        



#==============================================================================
# ReferenceType    
#==============================================================================
class ReferenceType(Type): 
    '''A reference type.'''

    def __init__(self, name, const=False, default=None, expandRef=True, suffix=''):
        Type.__init__(self, name, const, default)
        if expandRef:
            self.suffix = suffix + '&'
        
        
#==============================================================================
# PointerType
#==============================================================================
class PointerType(Type):
    'A pointer type.'
    
    def __init__(self, name, const=False, default=None, expandPointer=False, suffix=''):
        Type.__init__(self, name, const, default)
        if expandPointer:
            self.suffix = suffix + '*'
   

#==============================================================================
# FundamentalType
#==============================================================================
class FundamentalType(Type): 
    'One of the fundamental types, like int, void, etc.'

    def __init__(self, name, const=False, default=None): 
        Type.__init__(self, name, const, default)



#==============================================================================
# FunctionType
#==============================================================================
class FunctionType(Type):
    '''A pointer to a function.
    @ivar _result: the return value
    @ivar _parameters: a list of Types, indicating the parameters of the function.
    @ivar _name: the name of the function.
    '''

    def __init__(self, result, parameters):  
        Type.__init__(self, '', False)
        self.result = result
        self.parameters = parameters
        self.name = self.FullName()


    def FullName(self):
        full = '%s (*)' % self.result.FullName()
        params = [x.FullName() for x in self.parameters]
        full += '(%s)' % ', '.join(params)        
        return full
    
    
#==============================================================================
# MethodType
#==============================================================================
class MethodType(FunctionType):
    '''A pointer to a member function of a class.
    @ivar _class: The fullname of the class that the method belongs to.
    '''

    def __init__(self, result, parameters, class_):  
        self.class_ = class_
        FunctionType.__init__(self, result, parameters)


    def FullName(self):
        full = '%s (%s::*)' % (self.result.FullName(), self.class_)
        params = [x.FullName() for x in self.parameters]
        full += '(%s)' % ', '.join(params)
        return full
    
     
#==============================================================================
# Variable
#==============================================================================
class Variable(Declaration):
    '''Represents a global variable.

    @type _type: L{Type}
    @ivar _type: The type of the variable.
    '''
    
    def __init__(self, type, name, namespace):
        Declaration.__init__(self, name, namespace)
        self.type = type


#==============================================================================
# ClassVariable
#==============================================================================
class ClassVariable(Variable):
    '''Represents a class variable.

    @type _visibility: L{Scope}
    @ivar _visibility: The visibility of this variable within the class.

    @type _static: bool
    @ivar _static: Indicates if the variable is static.

    @ivar _class: Full name of the class that this variable belongs to.
    '''

    def __init__(self, type, name, class_, visib, static):
        Variable.__init__(self, type, name, None)
        self.visibility = visib
        self.static = static
        self.class_ = class_
    

    def FullName(self):
        return self.class_ + '::' + self.name

        
#==============================================================================
# Enumeration    
#==============================================================================
class Enumeration(Declaration):
    '''Represents an enum.

    @type _values: dict of str => int
    @ivar _values: holds the values for this enum.
    '''
    
    def __init__(self, name, namespace):
        Declaration.__init__(self, name, namespace)
        self.values = {} # dict of str => int


    def ValueFullName(self, name):
        '''Returns the full name for a value in the enum.
        '''
        assert name in self.values
        namespace = self.namespace
        if namespace:
            namespace += '::'
        return namespace + name


#==============================================================================
# ClassEnumeration
#==============================================================================
class ClassEnumeration(Enumeration):
    '''Represents an enum inside a class.

    @ivar _class: The full name of the class where this enum belongs.
    @ivar _visibility: The visibility of this enum inside his class.
    '''

    def __init__(self, name, class_, visib):
        Enumeration.__init__(self, name, None)
        self.class_ = class_
        self.visibility = visib


    def FullName(self):
        return '%s::%s' % (self.class_, self.name)


    def ValueFullName(self, name):
        assert name in self.values
        return '%s::%s' % (self.class_, name)

    
#==============================================================================
# Typedef
#==============================================================================
class Typedef(Declaration):
    '''A Typedef declaration.

    @type _type: L{Type}
    @ivar _type: The type of the typedef.

    @type _visibility: L{Scope}
    @ivar _visibility: The visibility of this typedef.
    '''

    def __init__(self, type, name, namespace):
        Declaration.__init__(self, name, namespace)
        self.type = type
        self.visibility = Scope.public




                          
#==============================================================================
# Unknown        
#==============================================================================
class Unknown(Declaration):
    '''A declaration that Pyste does not know how to handle.
    '''

    def __init__(self, name):
        Declaration.__init__(self, name, None)