[commands] Separate view parsing errors from BadArgument.

This causes them to be raised from a new exception named
ArgumentParsingError with 3 children for ease with i18n. This is
technically a breaking change since it no longer derives from
BadArgument, though catching UserInputError will prevent this change
from affecting the user.

1 files changed, 5 insertions, 5 deletions

diff --git a/discord/ext/commands/view.py b/discord/ext/commands/view.py
index 251c535a..ad34e0a4 100644
--- a/discord/ext/commands/view.py
+++ b/discord/ext/commands/view.py
@@ -24,7 +24,7 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 """
 
-from .errors import BadArgument
+from .errors import UnexpectedQuoteError, InvalidEndOfQuotedStringError, ExpectedClosingQuoteError
 
 class StringView:
     def __init__(self, buffer):
@@ -151,7 +151,7 @@ def quoted_word(view):
         if not current:
             if is_quoted:
                 # unexpected EOF
-                raise BadArgument('Expected closing {}.'.format(close_quote))
+                raise ExpectedClosingQuoteError(close_quote)
             return ''.join(result)
 
         # currently we accept strings in the format of "hello world"
@@ -162,7 +162,7 @@ def quoted_word(view):
                 # string ends with \ and no character after it
                 if is_quoted:
                     # if we're quoted then we're expecting a closing quote
-                    raise BadArgument('Expected closing {}.'.format(close_quote))
+                    raise ExpectedClosingQuoteError(close_quote)
                 # if we aren't then we just let it through
                 return ''.join(result)
 
@@ -177,14 +177,14 @@ def quoted_word(view):
 
         if not is_quoted and current in _all_quotes:
             # we aren't quoted
-            raise BadArgument('Unexpected quote mark in non-quoted string')
+            raise UnexpectedQuoteError(current)
 
         # closing quote
         if is_quoted and current == close_quote:
             next_char = view.get()
             valid_eof = not next_char or next_char.isspace()
             if not valid_eof:
-                raise BadArgument('Expected space after closing quotation')
+                raise InvalidEndOfQuotedStringError(next_char)
 
             # we're quoted so it's okay
             return ''.join(result)