Squashed 'waflib/' content from commit 982416b

git-subtree-dir: waflib
git-subtree-split: 982416b8a6c6728e200243e1be3ab60435c08830

1 files changed, 68 insertions, 0 deletions

diff --git a/Errors.py b/Errors.py
new file mode 100644
index 00000000..bf75c1b6
--- /dev/null
+++ b/Errors.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2010-2018 (ita)
+
+"""
+Exceptions used in the Waf code
+"""
+
+import traceback, sys
+
+class WafError(Exception):
+	"""Base class for all Waf errors"""
+	def __init__(self, msg='', ex=None):
+		"""
+		:param msg: error message
+		:type msg: string
+		:param ex: exception causing this error (optional)
+		:type ex: exception
+		"""
+		Exception.__init__(self)
+		self.msg = msg
+		assert not isinstance(msg, Exception)
+
+		self.stack = []
+		if ex:
+			if not msg:
+				self.msg = str(ex)
+			if isinstance(ex, WafError):
+				self.stack = ex.stack
+			else:
+				self.stack = traceback.extract_tb(sys.exc_info()[2])
+		self.stack += traceback.extract_stack()[:-1]
+		self.verbose_msg = ''.join(traceback.format_list(self.stack))
+
+	def __str__(self):
+		return str(self.msg)
+
+class BuildError(WafError):
+	"""Error raised during the build and install phases"""
+	def __init__(self, error_tasks=[]):
+		"""
+		:param error_tasks: tasks that could not complete normally
+		:type error_tasks: list of task objects
+		"""
+		self.tasks = error_tasks
+		WafError.__init__(self, self.format_error())
+
+	def format_error(self):
+		"""Formats the error messages from the tasks that failed"""
+		lst = ['Build failed']
+		for tsk in self.tasks:
+			txt = tsk.format_error()
+			if txt:
+				lst.append(txt)
+		return '\n'.join(lst)
+
+class ConfigurationError(WafError):
+	"""Configuration exception raised in particular by :py:meth:`waflib.Context.Context.fatal`"""
+	pass
+
+class TaskRescan(WafError):
+	"""Task-specific exception type signalling required signature recalculations"""
+	pass
+
+class TaskNotReady(WafError):
+	"""Task-specific exception type signalling that task signatures cannot be computed"""
+	pass
+