# Lines¶

Lines are the most basic and intuitive object in Sark. A line in the IDA-View is a line in Sark. Let’s have a look.

>>> my_line = sark.Line()  # Same as sark.Line(ea=idc.here())
>>> print my_line
[00417401]    mov     ebp, esp

>>> my_line.comments.regular = "The line at 0x{:08X}".format(my_line.ea)
>>> print my_line
[00417401]    mov     ebp, esp        ; The line at 0x00417401


The sark.Line object encapsulates most of the line-relevant functions of IDAPython. Some examples include:

Member Usage
name the name of the line (if any)
insn assembly instruction
xrefs_to cross references to the line
xrefs_from cross references from the line
bytes the actual bytes in the line

For the rest, I suggest reading the highly documented code, or using the interactive shell to experiment with the sark.Line object.

The line object contains 4 notable members: comments, insn and the xrefs_* pair.

The comments member provides access to all comment types: - Regular comments - Repeating comments - Anterior lines - Posterior lines

It allows you to get, as well as set comments. Each change to the comments will cause the UI to refresh.

>>> anterior = my_line.comments.anterior
>>> my_line.comments.regular = "My Regular Comment"


## Line Xrefs¶

Provide access to Xref objects describing the line’s cross references. Xref objects will be discussed later under Xrefs.

## Instructions¶

Provide access to the line’s instructions, down to the single operand. Instruction objects will be discussed later under Instructions.

## Getting Lines¶

There are several ways to get lines. Either directly or from other objects.

Method Effect
A Single Line
sark.Line() Get the current line
sark.Line(ea=my_address) Get the line at the given address
sark.Line(name=some_name) Get the line with the given name
Multiple Lines
sark.lines() Iterate all lines in the IDB
sark.lines(start=start_ea, end=end_ea) Iterate all lines between start_ea and end_ea
sark.lines(selection=True) Iterate all lines in current selection
sark.lines(reverse=True) Iterate lines in reverse order

Objects that contain lines, such as functions and code blocks, can return their own set of lines. See sark.Function().lines for an example.