From e589cc0288b139509a19f3a27cd0cf0368ca0834 Mon Sep 17 00:00:00 2001
From: andri lim <jangko128@gmail.com>
Date: Wed, 29 Jan 2025 12:32:58 +0700
Subject: [PATCH] Reduce declared but not used warnings (#770)

---
 eth/common/eth_types_rlp.nim |  4 ++--
 eth/rlp/writer.nim           | 18 +++++++++---------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/eth/common/eth_types_rlp.nim b/eth/common/eth_types_rlp.nim
index 72750035..e397ccad 100644
--- a/eth/common/eth_types_rlp.nim
+++ b/eth/common/eth_types_rlp.nim
@@ -29,10 +29,10 @@ proc read*(rlp: var Rlp, T: type BlockHashOrNumber): T =
     BlockHashOrNumber(isHash: false, number: rlp.read(BlockNumber))
 
 proc rlpHash*[T](v: T): Hash32 =
-  Hash32(rlp.encodeHash(v))
+  rlp.encodeHash(v)
 
 proc rlpHash*(tx: PooledTransaction): Hash32 =
-  Hash32(rlp.encodeHash(tx.tx))
+  rlp.encodeHash(tx.tx)
 
 func blockHash*(h: Header): Hash32 {.inline.} =
   rlpHash(h)
diff --git a/eth/rlp/writer.nim b/eth/rlp/writer.nim
index a8c0be3c..dabf22f7 100644
--- a/eth/rlp/writer.nim
+++ b/eth/rlp/writer.nim
@@ -55,7 +55,7 @@ template appendImpl(self: var RlpWriter, i: SomeUnsignedInt) =
   self.appendInt(i)
 
 template appendImpl(self: var RlpWriter, e: enum) =
-  # TODO: check for negative enums 
+  # TODO: check for negative enums
   self.appendInt(uint64(e))
 
 template appendImpl(self: var RlpWriter, b: bool) =
@@ -73,10 +73,10 @@ template innerType[T](x: Option[T] | Opt[T]): typedesc = T
 proc countNestedListsDepth(T: type): int {.compileTime.} =
   mixin enumerateRlpFields
 
-  var dummy: T
+  var dummy {.used.}: T
 
-  template op(RT, fN, f) =
-    result += countNestedListsDepth(type f) 
+  template op(RT, fN, f) {.used.}=
+    result += countNestedListsDepth(type f)
 
   when T is Option or T is Opt:
     result += countNestedListsDepth(innerType(dummy))
@@ -89,7 +89,7 @@ proc countNestedListsDepth(T: type): int {.compileTime.} =
     inc result
     result += countNestedListsDepth(elementType(dummy))
 
-proc countNestedListsDepth[E](T: type openArray[E]): int = 
+proc countNestedListsDepth[E](T: type openArray[E]): int =
   countNestedListsDepth(seq[E])
 
 proc countOptionalFields(T: type): int {.compileTime.} =
@@ -209,8 +209,8 @@ proc initRlpList*(listSize: int): RlpDefaultWriter =
 
 proc encode*[T](v: T): seq[byte] =
   mixin append
-  
-  const nestedListsDepth = countNestedListsDepth(T) 
+
+  const nestedListsDepth = countNestedListsDepth(T)
 
   when nestedListsDepth > 0:
     var tracker = StaticRlpLengthTracker[nestedListsDepth]()
@@ -229,7 +229,7 @@ proc encode*[T](v: T): seq[byte] =
 proc encodeHash*[T](v: T): Hash32 =
   mixin append
 
-  const nestedListsDepth = countNestedListsDepth(T) 
+  const nestedListsDepth = countNestedListsDepth(T)
 
   when nestedListsDepth > 0:
     var tracker = StaticRlpLengthTracker[nestedListsDepth]()
@@ -256,7 +256,7 @@ func encodeInt*(i: SomeUnsignedInt): RlpIntBuf =
     let bytesNeeded = uint64(i).bytesNeeded
 
     buf.add(BLOB_START_MARKER + byte(bytesNeeded))
-    buf.setLen(buf.len + bytesNeeded) 
+    buf.setLen(buf.len + bytesNeeded)
     buf.writeBigEndian(i, buf.len - 1, bytesNeeded)
 
   buf