From cb7e7a3caef6e39d0645d3873579bff950e96418 Mon Sep 17 00:00:00 2001
From: coffeepots <ryan@status.im>
Date: Wed, 9 May 2018 13:07:32 +0100
Subject: [PATCH] Add converters to and from common `stint` types and `byte`

---
 eth-rpc/server/jsonconverters.nim | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 eth-rpc/server/jsonconverters.nim

diff --git a/eth-rpc/server/jsonconverters.nim b/eth-rpc/server/jsonconverters.nim
new file mode 100644
index 0000000..43d5889
--- /dev/null
+++ b/eth-rpc/server/jsonconverters.nim
@@ -0,0 +1,25 @@
+import json, stint
+
+iterator bytes*(i: UInt256|Int256): byte =
+  let b = cast[ptr array[32, byte]](i.unsafeaddr)
+  var pos = 0
+  while pos < 32:
+    yield b[pos]
+    pos += 1
+
+proc `%`*(n: UInt256): JsonNode =
+  ## Generic constructor for JSON data. Creates a new `JInt JsonNode`.
+  result = newJArray()
+  for elem in n.bytes:
+    result.add(%int(elem))
+
+proc `%`*(n: Int256): JsonNode =
+  ## Generic constructor for JSON data. Creates a new `JInt JsonNode`.
+  result = newJArray()
+  for elem in n.bytes:
+    result.add(%int(elem))
+
+proc `%`*(n: byte): JsonNode =
+  ## Generic constructor for JSON data. Creates a new `JInt JsonNode`.
+  result = newJInt(int(n))
+