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#!/usr/bin/env python
##########################################################################
#
# Copyright 2008 VMware, Inc.
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sub license, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice (including the
# next paragraph) shall be included in all copies or substantial portions
# of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
# IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
##########################################################################
'''Trace data model.'''
import sys
import string
import binascii
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
import format
class Node:
def visit(self, visitor):
raise NotImplementedError
def __str__(self):
stream = StringIO()
formatter = format.DefaultFormatter(stream)
pretty_printer = PrettyPrinter(formatter)
self.visit(pretty_printer)
return stream.getvalue()
class Literal(Node):
def __init__(self, value):
self.value = value
def visit(self, visitor):
visitor.visit_literal(self)
class Blob(Node):
def __init__(self, value):
self._rawValue = None
self._hexValue = value
def getValue(self):
if self._rawValue is None:
self._rawValue = binascii.a2b_hex(self._hexValue)
self._hexValue = None
return self._rawValue
def visit(self, visitor):
visitor.visit_blob(self)
class NamedConstant(Node):
def __init__(self, name):
self.name = name
def visit(self, visitor):
visitor.visit_named_constant(self)
class Array(Node):
def __init__(self, elements):
self.elements = elements
def visit(self, visitor):
visitor.visit_array(self)
class Struct(Node):
def __init__(self, name, members):
self.name = name
self.members = members
def visit(self, visitor):
visitor.visit_struct(self)
class Pointer(Node):
def __init__(self, address):
self.address = address
def visit(self, visitor):
visitor.visit_pointer(self)
class Call:
def __init__(self, no, klass, method, args, ret, time):
self.no = no
self.klass = klass
self.method = method
self.args = args
self.ret = ret
self.time = time
def visit(self, visitor):
visitor.visit_call(self)
class Trace:
def __init__(self, calls):
self.calls = calls
def visit(self, visitor):
visitor.visit_trace(self)
class Visitor:
def visit_literal(self, node):
raise NotImplementedError
def visit_blob(self, node):
raise NotImplementedError
def visit_named_constant(self, node):
raise NotImplementedError
def visit_array(self, node):
raise NotImplementedError
def visit_struct(self, node):
raise NotImplementedError
def visit_pointer(self, node):
raise NotImplementedError
def visit_call(self, node):
raise NotImplementedError
def visit_trace(self, node):
raise NotImplementedError
class PrettyPrinter:
def __init__(self, formatter):
self.formatter = formatter
def visit_literal(self, node):
if node.value is None:
self.formatter.literal('NULL')
return
if isinstance(node.value, basestring):
self.formatter.literal('"' + node.value + '"')
return
self.formatter.literal(repr(node.value))
def visit_blob(self, node):
self.formatter.address('blob()')
def visit_named_constant(self, node):
self.formatter.literal(node.name)
def visit_array(self, node):
self.formatter.text('{')
sep = ''
for value in node.elements:
self.formatter.text(sep)
value.visit(self)
sep = ', '
self.formatter.text('}')
def visit_struct(self, node):
self.formatter.text('{')
sep = ''
for name, value in node.members:
self.formatter.text(sep)
self.formatter.variable(name)
self.formatter.text(' = ')
value.visit(self)
sep = ', '
self.formatter.text('}')
def visit_pointer(self, node):
self.formatter.address(node.address)
def visit_call(self, node):
self.formatter.text('%s ' % node.no)
if node.klass is not None:
self.formatter.function(node.klass + '::' + node.method)
else:
self.formatter.function(node.method)
self.formatter.text('(')
sep = ''
for name, value in node.args:
self.formatter.text(sep)
self.formatter.variable(name)
self.formatter.text(' = ')
value.visit(self)
sep = ', '
self.formatter.text(')')
if node.ret is not None:
self.formatter.text(' = ')
node.ret.visit(self)
if node.time is not None:
self.formatter.text(' // time ')
node.time.visit(self)
def visit_trace(self, node):
for call in node.calls:
call.visit(self)
self.formatter.newline()
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