From c1c1f29abf27fa7bf2870de0b590ccf11ac79dde Mon Sep 17 00:00:00 2001
From: Anshal Shukla <53994948+anshalshukla@users.noreply.github.com>
Date: Mon, 20 Feb 2023 10:20:47 +0530
Subject: [PATCH] Add Bor fork blocks (#893)

This is essential to have system_contract lookup which fixes the RPC
response for updated contract codes.
---
 chain/chain_config.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/chain/chain_config.go b/chain/chain_config.go
index 0e973926e..dbd143dcf 100644
--- a/chain/chain_config.go
+++ b/chain/chain_config.go
@@ -82,6 +82,9 @@ type Config struct {
 	Eip1559FeeCollector           *common.Address `json:"eip1559FeeCollector,omitempty"`           // (Optional) Address where burnt EIP-1559 fees go to
 	Eip1559FeeCollectorTransition *big.Int        `json:"eip1559FeeCollectorTransition,omitempty"` // (Optional) Block from which burnt EIP-1559 fees go to the Eip1559FeeCollector
 
+	// Bor fork blocks
+	CalcuttaBlock *big.Int `json:"calcuttaBlock,omitempty"`
+
 	// Various consensus engines
 	Ethash *EthashConfig `json:"ethash,omitempty"`
 	Clique *CliqueConfig `json:"clique,omitempty"`
@@ -255,6 +258,15 @@ func (c *Config) IsOnNano(num *big.Int) bool {
 	return numEqual(c.NanoBlock, num)
 }
 
+// IsCalcutta returns whether num is either equal to the euler fork block or greater.
+func (c *Config) IsCalcutta(num uint64) bool {
+	return isForked(c.CalcuttaBlock, num)
+}
+
+func (c *Config) IsOnCalcutta(num *big.Int) bool {
+	return numEqual(c.CalcuttaBlock, num)
+}
+
 // IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater.
 func (c *Config) IsMuirGlacier(num uint64) bool {
 	return isForked(c.MuirGlacierBlock, num)