From 493d83fc02b04163602eb9c76ccf6b40cc3304ba Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Mon, 24 Feb 2020 19:09:22 -0500
Subject: add SetGCMode()

---
 eth/config.go | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/eth/config.go b/eth/config.go
index 85abe7c..ee0fdb7 100644
--- a/eth/config.go
+++ b/eth/config.go
@@ -17,6 +17,7 @@
 package eth
 
 import (
+	"errors"
 	"math/big"
 	"os"
 	"os/user"
@@ -160,8 +161,20 @@ type Config struct {
 	// Istanbul block override (TODO: remove after the fork)
 	OverrideIstanbul *big.Int
 
-    // Manually select and grow the canonical chain
-	ManualCanonical  bool
+	// Manually select and grow the canonical chain
+	ManualCanonical bool
+}
+
+func (cfg *Config) SetGCMode(gcmode string) error {
+	switch gcmode {
+	case "full":
+		cfg.NoPruning = false
+	case "archive":
+		cfg.NoPruning = true
+	default:
+		return errors.New("invalid gcmode value")
+	}
+	return nil
 }
 
 func MyDefaultConfig() Config {
-- 
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