From 9e7f10a1900be5e4a9c996b363f9843668e82f82 Mon Sep 17 00:00:00 2001
From: Ilias Tsatiris <ilias@dedaub.com>
Date: Tue, 2 Dec 2025 10:16:04 +0200
Subject: [PATCH] chore: Add comments

---
 eth/tracers/native/call.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/eth/tracers/native/call.go b/eth/tracers/native/call.go
index 979c2e1d7f..cc04569e8f 100644
--- a/eth/tracers/native/call.go
+++ b/eth/tracers/native/call.go
@@ -45,11 +45,13 @@ type callLog struct {
 	// Position of the log relative to subcalls within the same trace
 	// See https://github.com/ethereum/go-ethereum/pull/28389 for details
 	Position hexutil.Uint `json:"position"`
-	Pc       uint64       `json:"pc"`
+	// Program counter (bytecode offset) of the instruction that created the log
+	Pc uint64 `json:"pc"`
 }
 
 type callFrame struct {
-	Type         vm.OpCode       `json:"-"`
+	Type vm.OpCode `json:"-"`
+	// Program counter (bytecode offset) of the instruction that created the callframe
 	Pc           uint64          `json:"pc"`
 	From         common.Address  `json:"from"`
 	Gas          uint64          `json:"gas"`
@@ -119,7 +121,7 @@ type callTracer struct {
 	depth     int
 	interrupt atomic.Bool // Atomic flag to signal execution interruption
 	reason    error       // Textual reason for the interruption
-	lastPc    uint64
+	lastPc    uint64      // Stores the program counter of the last executed command
 }
 
 type callTracerConfig struct {