From 59f7f2ffd733404a8c21e875c17d9183d462d391 Mon Sep 17 00:00:00 2001
From: Rob Walker <rob@solana.com>
Date: Thu, 21 Mar 2019 14:51:23 -0700
Subject: [PATCH] try to reduce boilerplate

---
 programs/budget/src/lib.rs |  6 +-----
 sdk/src/native_program.rs  | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/programs/budget/src/lib.rs b/programs/budget/src/lib.rs
index 6cf66ffe41daf2..0bb0fc2cf8cfeb 100644
--- a/programs/budget/src/lib.rs
+++ b/programs/budget/src/lib.rs
@@ -1,5 +1 @@
-mod budget_processor;
-
-use crate::budget_processor::process_instruction;
-
-solana_sdk::process_instruction_entrypoint!(process_instruction);
+solana_sdk::processor_entrypoint!(budget_processor);
diff --git a/sdk/src/native_program.rs b/sdk/src/native_program.rs
index 86c28cc918b616..730b43171a2984 100644
--- a/sdk/src/native_program.rs
+++ b/sdk/src/native_program.rs
@@ -49,3 +49,25 @@ macro_rules! process_instruction_entrypoint(
         }
     )
 );
+
+// Macro to define an entrypoint for a processor module
+#[macro_export]
+macro_rules! processor_entrypoint(
+    ($processor:ident) => (
+        mod $processor;
+
+        solana_sdk::solana_entrypoint!(process_instruction_entrypoint);
+        fn process_instruction_entrypoint(
+            program_id: &solana_sdk::pubkey::Pubkey,
+            keyed_accounts: &mut [solana_sdk::account::KeyedAccount],
+            data: &[u8],
+            tick_height: u64,
+        ) -> Result<(), solana_sdk::transaction::InstructionError> {
+            solana_logger::setup();
+
+            log::trace!("process_instruction: {:?}", data);
+            log::trace!("keyed_accounts: {:?}", keyed_accounts);
+            crate::$processor::process_instruction(program_id, keyed_accounts, data, tick_height)
+        }
+    )
+);