trace: [tcg] Argument type transformation machinery (b55835ac) · Commits · SUMMER2020 / students / proj-2021291

scripts/tracetool/init.py

+29 −1

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@ __email__ = "stefanha@linux.vnet.ibm.com"

		import re
		import sys
		import weakref

		import tracetool.format
		import tracetool.backend
		@@ -108,6 +109,18 @@ class Arguments:
		"""List of argument types."""
		return [ type_ for type_, _ in self._args ]

		def transform(self, *trans):
		"""Return a new Arguments instance with transformed types.

		The types in the resulting Arguments instance are transformed according
		to tracetool.transform.transform_type.
		"""
		res = []
		for type_, name in self._args:
		res.append((tracetool.transform.transform_type(type_, *trans),
		name))
		return Arguments(res)


		class Event(object):
		"""Event description.
		@@ -128,7 +141,7 @@ class Event(object):

		_VALID_PROPS = set(["disable"])

		def __init__(self, name, props, fmt, args):
		def __init__(self, name, props, fmt, args, orig=None):
		"""
		Parameters
		----------
		@@ -140,12 +153,19 @@ class Event(object):
		Event printing format.
		args : Arguments
		Event arguments.
		orig : Event or None
		Original Event before transformation.
		"""
		self.name = name
		self.properties = props
		self.fmt = fmt
		self.args = args

		if orig is None:
		self.original = weakref.ref(self)
		else:
		self.original = orig

		unknown_props = set(self.properties) - self._VALID_PROPS
		if len(unknown_props) > 0:
		raise ValueError("Unknown properties: %s"
		@@ -190,6 +210,14 @@ class Event(object):
		fmt = Event.QEMU_TRACE
		return fmt % {"name": self.name}

		def transform(self, *trans):
		"""Return a new Event with transformed Arguments."""
		return Event(self.name,
		list(self.properties),
		self.fmt,
		self.args.transform(*trans),
		self)


		def _read_events(fobj):
		res = []