Class IPythonInputSplitter

IPython/core/inputsplitter.py:533–771

An input splitter that recognizes all of IPython's special syntax.

class IPythonInputSplitter(InputSplitter):
    """An input splitter that recognizes all of IPython's special syntax."""

    # String with raw, untransformed input.
    source_raw = ''
    
    # Flag to track when a transformer has stored input that it hasn't given
    # back yet.
    transformer_accumulating = False
    
    # Flag to track when assemble_python_lines has stored input that it hasn't
    # given back yet.
    within_python_line = False

    # Private attributes

    # List with lines of raw input accumulated so far.
    _buffer_raw = None

    def __init__(self, line_input_checker=True, physical_line_transforms=None,
                    logical_line_transforms=None, python_line_transforms=None):
        super(IPythonInputSplitter, self).__init__()
        self._buffer_raw = []
        self._validate = True
        
        if physical_line_transforms is not None:
            self.physical_line_transforms = physical_line_transforms
        else:
            self.physical_line_transforms = [
                                             leading_indent(),
                                             classic_prompt(),
                                             ipy_prompt(),
                                             cellmagic(end_on_blank_line=line_input_checker),
                                            ]
        
        self.assemble_logical_lines = assemble_logical_lines()
        if logical_line_transforms is not None:
            self.logical_line_transforms = logical_line_transforms
        else:
            self.logical_line_transforms = [
                                            help_end(),
                                            escaped_commands(),
                                            assign_from_magic(),
                                            assign_from_system(),
                                           ]
        
        self.assemble_python_lines = assemble_python_lines()
        if python_line_transforms is not None:
            self.python_line_transforms = python_line_transforms
        else:
            # We don't use any of these at present
            self.python_line_transforms = []
    
    @property
    def transforms(self):
        "Quick access to all transformers."
        return self.physical_line_transforms + \
            [self.assemble_logical_lines] + self.logical_line_transforms + \