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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
__init__.py	0 B	-rw-r--r--	2020-10-27 13:42
abbrevtable.py	2.49 KB	-rw-r--r--	2020-10-27 13:42
aranges.py	4.37 KB	-rw-r--r--	2020-10-27 13:42
callframe.py	29.41 KB	-rw-r--r--	2020-10-27 13:42
compileunit.py	8.31 KB	-rw-r--r--	2020-10-27 13:42
constants.py	4.45 KB	-rw-r--r--	2020-10-27 13:42
descriptions.py	23.65 KB	-rw-r--r--	2020-10-27 13:42
die.py	10.24 KB	-rw-r--r--	2020-10-27 13:42
dwarf_expr.py	9.51 KB	-rw-r--r--	2020-10-27 13:42
dwarfinfo.py	17.29 KB	-rw-r--r--	2020-10-27 13:42
enums.py	15.5 KB	-rw-r--r--	2020-10-27 13:42
lineprogram.py	11.76 KB	-rw-r--r--	2020-10-27 13:42
locationlists.py	5.35 KB	-rw-r--r--	2020-10-27 13:42
namelut.py	7.15 KB	-rw-r--r--	2020-10-27 13:42
ranges.py	2.21 KB	-rw-r--r--	2020-10-27 13:42
structs.py	12.58 KB	-rw-r--r--	2020-10-27 13:42

Rename

#-------------------------------------------------------------------------------
# elftools: dwarf/abbrevtable.py
#
# DWARF abbreviation table
#
# Eli Bendersky (eliben@gmail.com)
# This code is in the public domain
#-------------------------------------------------------------------------------
from ..common.utils import struct_parse, dwarf_assert

class AbbrevTable(object):
    """ Represents a DWARF abbreviation table.
    """
    def __init__(self, structs, stream, offset):
        """ Create new abbreviation table. Parses the actual table from the
            stream and stores it internally.

structs:
                A DWARFStructs instance for parsing the data

stream, offset:
                The stream and offset into the stream where this abbreviation
                table lives.
        """
        self.structs = structs
        self.stream = stream
        self.offset = offset

self._abbrev_map = self._parse_abbrev_table()

def get_abbrev(self, code):
        """ Get the AbbrevDecl for a given code. Raise KeyError if no
            declaration for this code exists.
        """
        return self._abbrev_map[code]

def _parse_abbrev_table(self):
        """ Parse the abbrev table from the stream
        """
        map = {}
        self.stream.seek(self.offset)
        while True:
            decl_code = struct_parse(
                struct=self.structs.Dwarf_uleb128(''),
                stream=self.stream)
            if decl_code == 0:
                break
            declaration = struct_parse(
                struct=self.structs.Dwarf_abbrev_declaration,
                stream=self.stream)
            map[decl_code] = AbbrevDecl(decl_code, declaration)
        return map

class AbbrevDecl(object):
    """ Wraps a parsed abbreviation declaration, exposing its fields with
        dict-like access, and adding some convenience methods.

The abbreviation declaration represents an "entry" that points to it.
    """
    def __init__(self, code, decl):
        self.code = code
        self.decl = decl

def has_children(self):
        """ Does the entry have children?
        """
        return self['children_flag'] == 'DW_CHILDREN_yes'

def iter_attr_specs(self):
        """ Iterate over the attribute specifications for the entry. Yield
            (name, form) pairs.
        """
        for attr_spec in self['attr_spec']:
            yield attr_spec.name, attr_spec.form

def __getitem__(self, entry):
        return self.decl[entry]