added npv of equity forward

Author: siddharthqs

src/equity/equity_forward.rs

@@ -74,3 +74,10 @@ impl Instrument for EquityForward {
     }
 }
 
+impl EquityForward{
+    pub fn delta(&self) -> f64 { 1.0 }
+    pub fn gamma(&self) -> f64 { 0.0 }
+    pub fn vega(&self) -> f64  { 0.0 }
+    pub fn theta(&self) -> f64 { 0.0 }
+    pub fn rho(&self) -> f64   { 0.0 }
+}

src/equity/handle_equity_contracts.rs

@@ -1,5 +1,6 @@
 use crate::core::traits::Instrument;
 use crate::core::utils::{Contract,CombinedContract, ContractOutput};
+use crate::equity::equity_forward::EquityForward;
 use crate::equity::vanila_option::EquityOption;
 use crate::equity::equity_future::EquityFuture;
 pub fn handle_equity_contract(data: &Contract) -> String {
@@ -41,6 +42,24 @@ pub fn handle_equity_contract(data: &Contract) -> String {
             };
             serde_json::to_string(&combined_).expect("Failed to generate output")
         }
+        Some("Forward") => {
+            let future = EquityForward::from_json(data);
+            let contract_output = ContractOutput {
+                pv: future.npv(),
+                delta: future.delta(),
+                gamma: future.gamma(),
+                vega: future.vega(),
+                theta: future.theta(),
+                rho: future.rho(),
+                error: None
+            };
+            println!("Equity Forward Price: {}", contract_output.pv);
+            let combined_ = CombinedContract {
+                contract: data.clone(),
+                output: contract_output
+            };
+            serde_json::to_string(&combined_).expect("Failed to generate output")
+        }
         _ => {
             panic!("Unsupported or missing product_type for asset EQ");
         }

src/examples/EQ/equity_forward.json

@@ -0,0 +1,19 @@
+{"asset":"EQ",
+  "contracts" : [
+{
+  "action":"PV",
+  "pricer":"Analytical",
+  "asset":"EQ",
+  "product_type": "Option",
+  "payoff_type": "Vanilla",
+  "market_data":{
+    "underlying_price":100,
+    "option_type":"C",
+    "strike_price":100,
+    "volatility":0.4,
+    "risk_free_rate":0.06,
+    "maturity":"2025-03-31",
+    "dividend": 0.01
+  }
+}]
+}