Example #1
0
def slice_string(currentline, source, name, invert=False,
                 formatter=programslice.formatter.LineFormatter):
    """
    Slices the given source code from the given currentline.

    :param currentline: A line from which to start the slicing.
    :type currentline: int
    :param source: The source code to parse.
    :type source: string
    :param name: filename of the given source code.
    :type name: string
    :param invert: Invert the result and return lines which don't depend
                    on the ``currentline``. Defaults to **False**.
    :type invert: bool
    :param formatter: Formatter class to format the slice result.
                        Defaults to LineFormatter which only outputs the
                        line numbers.
    :type formatter: class
    """
    lines = []
    # catch encoding declarations and shebangs
    head = re.compile(r'#!\/.*\n|#.*coding[:=]\s*(?P<enc>[-\w.]+).*')
    source = head.sub('', source)

    node = ast.parse(source, name)
    visitor = programslice.visitor.LineDependencyVisitor()
    visitor.visit(node)
    graph = visitor.get_graph_for(currentline)
    if graph:
        lines = graph.slice_forward(currentline)
        inverted = set(range(graph.first, graph.last + 1)) - set(lines)
    result = list(inverted) if invert else lines
    return formatter(result, source)()
Example #2
0
def get_sliced_testdata(filename, start_criteria):
    """
    Parses given filename and slices the source by given start_criteria.
    Returns the slice result
    """
    node = load_testdata(filename)
    visitor = programslice.visitor.LineDependencyVisitor()
    visitor.visit(node)
    graph = visitor.graph
    return programslice.graph.Slice(graph)(start_criteria)
Example #3
0
def get_sliced_testdata(filename, start_criteria):
    """
    Parses given filename and slices the source by given start_criteria.
    Returns the slice result
    """
    node = load_testdata(filename)
    visitor = programslice.visitor.LineDependencyVisitor()
    visitor.visit(node)
    graph = visitor.graph
    return programslice.graph.Slice(graph)(start_criteria)
Example #4
0
def slice_string(varname, currentline, offset, source, filename,
                 formatter=programslice.formatter.VimOutPutFormatter):
    """
    Slices the given source code from the given currentline.

    :param varname: The variable name to slice from.
    :type varname: str
    :param currentline: A line from which to start the slicing.
    :type currentline: int
    :param offset: The position offset of the variable.
    :type offset: int
    :param source: The source code to parse.
    :type source: str
    :param filename: filename of the given source code.
    :type filename: str
    :param formatter: Formatter class to format the slice result.
                      Defaults to VimOutPutFormatter which only outputs the
                      line numbers.
    :type formatter: class

    .. deprecated:: 0.3

    :param invert: Invert the result and return lines which don't depend
                   on the ``currentline``. Defaults to **False**.
    :type invert: bool
    """
    result = []
    # catch encoding declarations and shebangs
    head = re.compile(r'#!\/.*\n|#.*coding[:=]\s*(?P<enc>[-\w.]+).*')
    source = head.sub('', source)

    node = ast.parse(source, filename)
    visitor = programslice.visitor.LineDependencyVisitor()
    visitor.visit(node)
    graph = visitor.graph
    if graph:
        start = programslice.graph.Edge(varname, currentline, offset)
        result = programslice.graph.Slice(graph)(start)
    return formatter(result, source)()
def build_graph(node):
    
    visitor = programslice.visitor.LineDependencyVisitor()
    visitor.visit(node)
    
    return visitor.graph