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+"""
+ The LLVM Compiler Infrastructure
+
+This file is distributed under the University of Illinois Open Source
+License. See LICENSE.TXT for details.
+
+Sync lldb and related source from a local machine to a remote machine.
+
+This facilitates working on the lldb sourcecode on multiple machines
+and multiple OS types, verifying changes across all.
+
+Provides helper support for adding lldb test paths to the python path.
+"""
+
+from __future__ import print_function
+from __future__ import absolute_import
+
+# System modules
+import os
+import platform
+import subprocess
+import sys
+
+# Third-party modules
+
+# LLDB modules
+
+
+def add_lldb_test_paths(check_dir):
+ # pylint: disable=line-too-long
+ """Adds lldb test-related paths to the python path.
+
+ Starting with the given directory and working upward through
+ each parent directory up to the root, it looks for the lldb
+ test directory. When found, the lldb test directory and its
+ child test_runner/lib directory will be added to the python
+ system path.
+
+ Instructions for use:
+
+ This method supports a simple way of getting pylint to be able
+ to reliably lint lldb python test scripts (including the test
+ infrastructure itself). To do so, add the following to a
+ .pylintrc file in your home directory:
+
+ [Master]
+ init-hook='import os; import sys; sys.path.append(os.path.expanduser("~/path/to/lldb/packages/Python/lldbsuite/test")); import lldb_pylint_helper; lldb_pylint_helper.add_lldb_test_paths(os.getcwd()); print("sys.path={}\n".format(sys.path))'
+
+ Replace ~/path/to/lldb with a valid path to your local lldb source
+ tree. Note you can have multiple lldb source trees on your system, and
+ this will work just fine. The path in your .pylintrc is just needed to
+ find the paths needed for pylint in whatever lldb source tree you're in.
+ pylint will use the python files in whichever tree it is run from.
+
+ Note it is critical that the init-hook line be contained on a single line.
+ You can remove the print line at the end once you know the pythonpath is
+ getting set up the way you expect.
+
+ With these changes, you will be able to run the following, for example.
+
+ cd lldb/sourcetree/1-of-many/test/lang/c/anonymous
+ pylint TestAnonymous.py
+
+ This will work, and include all the lldb/sourcetree/1-of-many lldb-specific
+ python directories to your path.
+
+ You can then run it in another lldb source tree on the same machine like
+ so:
+
+ cd lldb/sourcetree/2-of-many/test/functionalities/inferior-assert
+ pyline TestInferiorAssert.py
+
+ and this will properly lint that file, using the lldb-specific python
+ directories from the 2-of-many source tree.
+
+ Note at the time I'm writing this, our tests are in pretty sad shape
+ as far as a stock pylint setup goes. But we need to start somewhere :-)
+
+ @param check_dir specifies a directory that will be used to start
+ looking for the lldb test infrastructure python library paths.
+ """
+ # Add the test-related packages themselves.
+ add_lldb_test_package_paths(check_dir)
+
+ # Add the lldb directory itself
+ add_lldb_module_directory()
+
+
+def add_lldb_module_directory():
+ """
+ Desired Approach:
+
+ Part A: find an lldb
+
+ 1. Walk up the parent chain from the current directory, looking for
+ a directory matching *build*. If we find that, use it as the
+ root of a directory search for an lldb[.exe] executable.
+
+ 2. If 1 fails, use the path and look for an lldb[.exe] in there.
+
+ If Part A ends up with an lldb, go to part B. Otherwise, give up
+ on the lldb python module path.
+
+ Part B: use the output from 'lldb[.exe] -P' to find the lldb dir.
+
+ Current approach:
+ If Darwin, use 'xcrun lldb -P'; others: find lldb on path.
+
+ Drawback to current approach:
+ If the tester is changing the SB API (adding new methods), pylint
+ will not know about them as it is using the wrong lldb python module.
+ In practice, this should be minor.
+ """
+ try:
+ lldb_module_path = None
+
+ if platform.system() == 'Darwin':
+ # Use xcrun to find the selected lldb.
+ lldb_module_path = subprocess.check_output(["xcrun", "lldb", "-P"])
+ elif platform.system() == 'Windows':
+ lldb_module_path = subprocess.check_output(
+ ["lldb.exe", "-P"], shell=True)
+ else:
+ # Use the shell to run lldb from the path.
+ lldb_module_path = subprocess.check_output(
+ ["lldb", "-P"], shell=True)
+
+ # Trim the result.
+ if lldb_module_path is not None:
+ lldb_module_path = lldb_module_path.strip()
+
+ # If we have a result, add it to the path
+ if lldb_module_path is not None and len(lldb_module_path) > 0:
+ sys.path.insert(0, lldb_module_path)
+ # pylint: disable=broad-except
+ except Exception as exception:
+ print("failed to find python path: {}".format(exception))
+
+
+def add_lldb_test_package_paths(check_dir):
+ """Adds the lldb test infrastructure modules to the python path.
+
+ See add_lldb_test_paths for more details.
+
+ @param check_dir the directory of the test.
+ """
+
+ def child_dirs(parent_dir):
+ return [os.path.join(parent_dir, child)
+ for child in os.listdir(parent_dir)
+ if os.path.isdir(os.path.join(parent_dir, child))]
+
+ check_dir = os.path.realpath(check_dir)
+ while check_dir and len(check_dir) > 0:
+ # If the current directory contains a packages/Python
+ # directory, add that directory to the path.
+ packages_python_child_dir = os.path.join(
+ check_dir, "packages", "Python")
+ if os.path.exists(packages_python_child_dir):
+ sys.path.insert(0, packages_python_child_dir)
+ sys.path.insert(0, os.path.join(
+ packages_python_child_dir, "test_runner", "lib"))
+
+ # Handle third_party module/package directory.
+ third_party_module_dir = os.path.join(
+ check_dir, "third_party", "Python", "module")
+ for child_dir in child_dirs(third_party_module_dir):
+ # Yes, we embed the module in the module parent dir
+ sys.path.insert(0, child_dir)
+
+ # We're done.
+ break
+
+ # Continue looking up the parent chain until we have no more
+ # directories to check.
+ new_check_dir = os.path.dirname(check_dir)
+ # We're done when the new check dir is not different
+ # than the current one.
+ if new_check_dir == check_dir:
+ break
+ check_dir = new_check_dir
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