|  | # Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file | 
|  | # for details. All rights reserved. Use of this source code is governed by a | 
|  | # BSD-style license that can be found in the LICENSE file. | 
|  |  | 
|  | import os | 
|  | import sys | 
|  |  | 
|  | # Static defines for use in tools (and utils.py). | 
|  | # There must be no dependencies on other utils from this file! | 
|  |  | 
|  | TOOLS_DIR = os.path.abspath(os.path.normpath(os.path.join(__file__, '..'))) | 
|  | REPO_ROOT = os.path.realpath(os.path.join(TOOLS_DIR, '..')) | 
|  | THIRD_PARTY = os.path.join(REPO_ROOT, 'third_party') | 
|  |  | 
|  |  | 
|  | def IsWindows(): | 
|  | return sys.platform.startswith('win') | 
|  |  | 
|  |  | 
|  | def IsLinux(): | 
|  | return sys.platform.startswith('linux') | 
|  |  | 
|  |  | 
|  | def IsOsX(): | 
|  | return sys.platform.startswith('darwin') |