consensus, core: drop all the legacy custom core error types

1 files changed, 41 insertions, 0 deletions

diff --git a/consensus/errors.go b/consensus/errors.go
new file mode 100644
index 000000000..f94bcb329
--- /dev/null
+++ b/consensus/errors.go
@@ -0,0 +1,41 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package consensus
+
+import "errors"
+
+var (
+	// ErrUnknownAncestor is returned when validating a block requires an ancestor
+	// that is unknown.
+	ErrUnknownAncestor = errors.New("unknown ancestor")
+
+	// ErrLargeBlockTime is returned if the value of the timestamp is beyond
+	// any reasonable value.
+	ErrLargeBlockTime = errors.New("timestamp too big")
+
+	// ErrZeroBlockTime is returned if the block's timestamp is the same as the one
+	// its parent has.
+	ErrZeroBlockTime = errors.New("timestamp equals parent's")
+
+	// ErrFutureBlock is returned when a block's timestamp is in the future according
+	// to the current node.
+	ErrFutureBlock = errors.New("block in the future")
+
+	// ErrInvalidNumber is returned if a block's number doesn't equal it's parent's
+	// plus one.
+	ErrInvalidNumber = errors.New("invalid block number")
+)