intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 54 insertions, 0 deletions

diff --git a/contrib/tools/cython/Cython/Plex/Errors.py b/contrib/tools/cython/Cython/Plex/Errors.py
new file mode 100644
index 00000000000..f460100d77e
--- /dev/null
+++ b/contrib/tools/cython/Cython/Plex/Errors.py
@@ -0,0 +1,54 @@
+#=======================================================================
+#
+#   Python Lexical Analyser
+#
+#   Exception classes
+#
+#=======================================================================
+
+
+class PlexError(Exception):
+    message = ""
+
+
+class PlexTypeError(PlexError, TypeError):
+    pass
+
+
+class PlexValueError(PlexError, ValueError):
+    pass
+
+
+class InvalidRegex(PlexError):
+    pass
+
+
+class InvalidToken(PlexError):
+    def __init__(self, token_number, message):
+        PlexError.__init__(self, "Token number %d: %s" % (token_number, message))
+
+
+class InvalidScanner(PlexError):
+    pass
+
+
+class AmbiguousAction(PlexError):
+    message = "Two tokens with different actions can match the same string"
+
+    def __init__(self):
+        pass
+
+
+class UnrecognizedInput(PlexError):
+    scanner = None
+    position = None
+    state_name = None
+
+    def __init__(self, scanner, state_name):
+        self.scanner = scanner
+        self.position = scanner.get_position()
+        self.state_name = state_name
+
+    def __str__(self):
+        return ("'%s', line %d, char %d: Token not recognised in state %r" % (
+            self.position + (self.state_name,)))