add

ccxt/static_dependencies/ethereum/abi/exceptions.py

@@ -0,0 +1,139 @@
+from ...parsimonious import (
+    ParseError
+)
+
+
+class EncodingError(Exception):
+    """
+    Base exception for any error that occurs during encoding.
+    """
+
+    pass
+
+
+class EncodingTypeError(EncodingError):
+    """
+    Raised when trying to encode a python value whose type is not supported for
+    the output ABI type.
+    """
+
+    pass
+
+
+class IllegalValue(EncodingError):
+    """
+    Raised when trying to encode a python value with the correct type but with
+    a value that is not considered legal for the output ABI type.
+
+    Example:
+
+    .. code-block:: python
+
+        fixed128x19_encoder(Decimal('NaN'))  # cannot encode NaN
+
+    """
+
+    pass
+
+
+class ValueOutOfBounds(IllegalValue):
+    """
+    Raised when trying to encode a python value with the correct type but with
+    a value that appears outside the range of valid values for the output ABI
+    type.
+
+    Example:
+
+    .. code-block:: python
+
+        ufixed8x1_encoder(Decimal('25.6'))  # out of bounds
+
+    """
+
+    pass
+
+
+class DecodingError(Exception):
+    """
+    Base exception for any error that occurs during decoding.
+    """
+
+    pass
+
+
+class InsufficientDataBytes(DecodingError):
+    """
+    Raised when there are insufficient data to decode a value for a given ABI
+    type.
+    """
+
+    pass
+
+
+class NonEmptyPaddingBytes(DecodingError):
+    """
+    Raised when the padding bytes of an ABI value are malformed.
+    """
+
+    pass
+
+
+class ParseError(ParseError):
+    """
+    Raised when an ABI type string cannot be parsed.
+    """
+
+    def __str__(self):
+        return "Parse error at '{}' (column {}) in type string '{}'".format(
+            self.text[self.pos : self.pos + 5],
+            self.column(),
+            self.text,
+        )
+
+
+class ABITypeError(ValueError):
+    """
+    Raised when a parsed ABI type has inconsistent properties; for example,
+    when trying to parse the type string ``'uint7'`` (which has a bit-width
+    that is not congruent with zero modulo eight).
+    """
+
+    pass
+
+
+class PredicateMappingError(Exception):
+    """
+    Raised when an error occurs in a registry's internal mapping.
+    """
+
+    pass
+
+
+class NoEntriesFound(ValueError, PredicateMappingError):
+    """
+    Raised when no registration is found for a type string in a registry's
+    internal mapping.
+
+    .. warning::
+
+        In a future version of ``eth-abi``, this error class will no longer
+        inherit from ``ValueError``.
+    """
+
+    pass
+
+
+class MultipleEntriesFound(ValueError, PredicateMappingError):
+    """
+    Raised when multiple registrations are found for a type string in a
+    registry's internal mapping.  This error is non-recoverable and indicates
+    that a registry was configured incorrectly.  Registrations are expected to
+    cover completely distinct ranges of type strings.
+
+    .. warning::
+
+        In a future version of ``eth-abi``, this error class will no longer
+        inherit from ``ValueError``.
+    """
+
+    pass