From 3e314638c377b1288e400eb31cc822cc93cbac71 Mon Sep 17 00:00:00 2001
From: AlexK <ak@mellow.finance>
Date: Mon, 7 Mar 2022 10:41:08 +0400
Subject: [PATCH] fixes

---
 ethers-solc/src/artifacts/mod.rs | 12 ++++++++----
 ethers-solc/src/compile/mod.rs   |  4 ++--
 ethers-solc/src/lib.rs           |  1 +
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/ethers-solc/src/artifacts/mod.rs b/ethers-solc/src/artifacts/mod.rs
index 39f54b0e..f332a6cb 100644
--- a/ethers-solc/src/artifacts/mod.rs
+++ b/ethers-solc/src/artifacts/mod.rs
@@ -67,10 +67,14 @@ impl CompilerInput {
                 solidity_sources.insert(path, source);
             }
         }
-        vec![
-            Self { language: "Solidity".to_string(), sources: solidity_sources, settings: Default::default() }, 
-            Self { language: "Yul".to_string(), sources: yul_sources, settings: Default::default() }
-        ]
+        let mut res = Vec::new();
+        if !solidity_sources.is_empty() {
+            res.push(Self { language: "Solidity".to_string(), sources: solidity_sources, settings: Default::default() });
+        }
+        if !yul_sources.is_empty() {
+            res.push(Self { language: "Yul".to_string(), sources: yul_sources, settings: Default::default() });
+        }
+        res
     }
 
     /// Sets the settings for compilation
diff --git a/ethers-solc/src/compile/mod.rs b/ethers-solc/src/compile/mod.rs
index ce57610d..af34c54f 100644
--- a/ethers-solc/src/compile/mod.rs
+++ b/ethers-solc/src/compile/mod.rs
@@ -571,8 +571,8 @@ impl Solc {
     /// use ethers_solc::{CompilerInput, Solc};
     /// let solc1 = Solc::default();
     /// let solc2 = Solc::default();
-    /// let input1 = CompilerInput::new("contracts").unwrap();
-    /// let input2 = CompilerInput::new("src").unwrap();
+    /// let input1 = CompilerInput::new("contracts").unwrap()[0].clone();
+    /// let input2 = CompilerInput::new("src").unwrap()[0].clone();
     ///
     /// let outputs = Solc::compile_many([(solc1, input1), (solc2, input2)], 2).await.flattened().unwrap();
     /// # }
diff --git a/ethers-solc/src/lib.rs b/ethers-solc/src/lib.rs
index afc6821b..cce80f56 100644
--- a/ethers-solc/src/lib.rs
+++ b/ethers-solc/src/lib.rs
@@ -740,6 +740,7 @@ mod tests {
             .build()
             .unwrap();
         let compiled = project.compile().unwrap();
+        dbg!(compiled.clone());
         assert!(!compiled.has_compiler_errors());
         let contracts = compiled.output().contracts;
         assert_eq!(contracts.contracts().count(), 3);