fix(abigen): correctly parse params in human readable abi (#194)

* fix(abigen): correctly parse params in human readable abi

* chore: make clippy happy

* test: remove unwrap

* chore: make clippy happy again

* chore: fix contract.rs example

* chore: rename to contract using human readable format

* examples: add abigen example with path to abi

* fix: pin funty version to fix bitvec error

* chore: remove unused import

* chore: fix deps

Cargo.lock

@@ -681,6 +681,7 @@ dependencies = [
  "ethabi-next",
  "ethereum-types",
  "ethers",
+ "funty",
  "generic-array",
  "glob",
  "hex",

ethers-contract/ethers-contract-abigen/src/contract.rs

@@ -107,7 +107,7 @@ impl Context {
             // heuristic for parsing the human readable format
 
             // replace bad chars
-            let abi_str = abi_str.replace('[', "").replace(']', "").replace(',', "");
+            let abi_str = abi_str.replace('[', "").replace(']', "");
             // split lines and get only the non-empty things
             let split: Vec<&str> = abi_str
                 .split('\n')

ethers-contract/ethers-contract-abigen/src/contract/common.rs

@@ -36,7 +36,7 @@ pub(crate) fn struct_declaration(cx: &Context, abi_name: &proc_macro2::Ident) ->
     } else {
         quote! {
             pub static #abi_name: Lazy<Abi> = Lazy::new(|| {
-                let abi_str = #abi.replace('[', "").replace(']', "").replace(',', "");
+                let abi_str = #abi.replace('[', "").replace(']', "");
                 // split lines and get only the non-empty things
                 let split: Vec<&str> = abi_str
                     .split("\n")

ethers-contract/ethers-contract-abigen/src/contract/events.rs

@@ -30,7 +30,7 @@ impl Context {
             .abi
             .events()
             .map(|event| expand_filter(event))
-            .collect::<Result<Vec<_>>>()?;
+            .collect::<Vec<_>>();
 
         if data_types.is_empty() {
             return Ok(quote! {});
@@ -43,7 +43,7 @@ impl Context {
 }
 
 /// Expands into a single method for contracting an event stream.
-fn expand_filter(event: &Event) -> Result<TokenStream> {
+fn expand_filter(event: &Event) -> TokenStream {
     // append `filter` to disambiguate with potentially conflicting
     // function names
     let name = util::safe_ident(&format!("{}_filter", event.name.to_snake_case()));
@@ -53,13 +53,13 @@ fn expand_filter(event: &Event) -> Result<TokenStream> {
     let ev_name = Literal::string(&event.name);
 
     let doc = util::expand_doc(&format!("Gets the contract's `{}` event", event.name));
-    Ok(quote! {
+    quote! {
 
         #doc
         pub fn #name(&self) -> Event<M, #result> {
             self.0.event(#ev_name).expect("event not found (this should never happen)")
         }
-    })
+    }
 }
 
 /// Expands an ABI event into a single event data type. This can expand either
@@ -317,7 +317,7 @@ mod tests {
             anonymous: false,
         };
 
-        assert_quote!(expand_filter(&event).unwrap(), {
+        assert_quote!(expand_filter(&event), {
             #[doc = "Gets the contract's `Transfer` event"]
             pub fn transfer_filter(&self) -> Event<M, TransferFilter> {
                 self.0

ethers-core/Cargo.toml

@@ -32,12 +32,17 @@ glob = { version = "0.3.0", default-features = false }
 bytes = { version = "1.0.1", features = ["serde"] }
 hex = { version = "0.4.2", default-features = false, features = ["std"] }
 
+# bitvec compilation issue
+# https://github.com/bitvecto-rs/bitvec/issues/105#issuecomment-778570981
+funty = "=1.1.0"
+
+
 [dev-dependencies]
 ethers = { version = "0.2", path = "../ethers" }
 
 serde_json = { version = "1.0.62", default-features = false }
 bincode = { version = "1.2.1", default-features = false }
-once_cell = { version = "1.5.2", default-features = false }
+once_cell = { version = "1.5.2" }
 
 
 [features]

ethers-middleware/src/signer.rs

@@ -248,8 +248,7 @@ where
         mut tx: TransactionRequest,
         block: Option<BlockNumber>,
     ) -> Result<PendingTransaction<'_, Self::Provider>, Self::Error> {
-        if let Some(ref to) = tx.to {
-            if let NameOrAddress::Name(ens_name) = to {
+        if let Some(NameOrAddress::Name(ens_name)) = tx.to {
             let addr = self
                 .inner
                 .resolve_name(&ens_name)
@@ -257,7 +256,6 @@ where
                 .map_err(SignerMiddlewareError::MiddlewareError)?;
             tx.to = Some(addr.into())
         }
-        }
 
         // fill any missing fields
         self.fill_transaction(&mut tx, block).await?;

ethers-middleware/src/transformer/middleware.rs

@@ -59,8 +59,7 @@ where
         block: Option<BlockNumber>,
     ) -> Result<PendingTransaction<'_, Self::Provider>, Self::Error> {
         // resolve the to field if that's an ENS name.
-        if let Some(ref to) = tx.to {
-            if let NameOrAddress::Name(ens_name) = to {
+        if let Some(NameOrAddress::Name(ens_name)) = tx.to {
             let addr = self
                 .inner
                 .resolve_name(&ens_name)
@@ -68,7 +67,6 @@ where
                 .map_err(TransformerMiddlewareError::MiddlewareError)?;
             tx.to = Some(addr.into())
         }
-        }
 
         // construct the appropriate proxy tx.
         let proxy_tx = self.transformer.transform(tx)?;

ethers-providers/src/pending_transaction.rs

@@ -73,15 +73,11 @@ impl<'a, P: JsonRpcClient> Future for PendingTransaction<'a, P> {
                 ctx.waker().wake_by_ref();
             }
             PendingTxState::GettingReceipt(fut) => {
-                if let Ok(receipt) = futures_util::ready!(fut.as_mut().poll(ctx)) {
-                    if let Some(receipt) = receipt {
+                if let Ok(Some(receipt)) = futures_util::ready!(fut.as_mut().poll(ctx)) {
                     *this.state = PendingTxState::CheckingReceipt(Box::new(receipt))
                 } else {
                     *this.state = PendingTxState::PausedGettingReceipt
                 }
-                } else {
-                    *this.state = PendingTxState::PausedGettingReceipt
-                }
                 ctx.waker().wake_by_ref();
             }
             PendingTxState::CheckingReceipt(receipt) => {

ethers-providers/src/provider.rs

@@ -293,15 +293,13 @@ impl<P: JsonRpcClient> Middleware for Provider<P> {
             tx.gas = Some(self.estimate_gas(&tx).await?);
         }
 
-        if let Some(ref to) = tx.to {
-            if let NameOrAddress::Name(ens_name) = to {
+        if let Some(NameOrAddress::Name(ref ens_name)) = tx.to {
             // resolve to an address
             let addr = self.resolve_name(&ens_name).await?;
 
             // set the value
             tx.to = Some(addr.into())
         }
-        }
 
         let tx_hash = self.request("eth_sendTransaction", [tx]).await?;
 

ethers/examples/contract_abi.json

@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"string","name":"value","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"author","type":"address"},{"indexed":false,"internalType":"string","name":"oldValue","type":"string"},{"indexed":false,"internalType":"string","name":"newValue","type":"string"}],"name":"ValueChanged","type":"event"},{"inputs":[],"name":"getValue","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"value","type":"string"}],"name":"setValue","outputs":[],"stateMutability":"nonpayable","type":"function"}]

ethers/examples/contract_human_readable.rs

@@ -12,7 +12,7 @@ abigen!(
     r#"[
         function setValue(string)
         function getValue() external view (string)
-        event ValueChanged(address indexed author, address indexed oldAuthor, string oldValue, string newValue)
+        event ValueChanged(address indexed author, string oldValue, string newValue)
     ]"#,
     event_derives(serde::Deserialize, serde::Serialize)
 );
@@ -20,7 +20,7 @@ abigen!(
 #[tokio::main]
 async fn main() -> Result<()> {
     // 1. compile the contract (note this requires that you are inside the `ethers/examples` directory)
-    let compiled = Solc::new("./contract.sol").build()?;
+    let compiled = Solc::new("**/contract.sol").build()?;
     let contract = compiled
         .get("SimpleStorage")
         .expect("could not find contract");

ethers/examples/contract_with_abi.rs

@@ -0,0 +1,72 @@
+use anyhow::Result;
+use ethers::{
+    prelude::*,
+    utils::{Ganache, Solc},
+};
+use std::{convert::TryFrom, sync::Arc, time::Duration};
+
+// Generate the type-safe contract bindings by providing the ABI
+// definition in human readable format
+abigen!(
+    SimpleContract,
+    "./ethers/examples/contract_abi.json",
+    event_derives(serde::Deserialize, serde::Serialize)
+);
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    // 1. compile the contract (note this requires that you are inside the `ethers/examples` directory)
+    let compiled = Solc::new("**/contract.sol").build()?;
+    let contract = compiled
+        .get("SimpleStorage")
+        .expect("could not find contract");
+    dbg!("OK");
+
+    // 2. launch ganache
+    let ganache = Ganache::new().spawn();
+
+    // 3. instantiate our wallet
+    let wallet: LocalWallet = ganache.keys()[0].clone().into();
+
+    // 4. connect to the network
+    let provider =
+        Provider::<Http>::try_from(ganache.endpoint())?.interval(Duration::from_millis(10u64));
+
+    // 5. instantiate the client with the wallet
+    let client = SignerMiddleware::new(provider, wallet);
+    let client = Arc::new(client);
+
+    // 6. create a factory which will be used to deploy instances of the contract
+    let factory = ContractFactory::new(
+        contract.abi.clone(),
+        contract.bytecode.clone(),
+        client.clone(),
+    );
+
+    // 7. deploy it with the constructor arguments
+    let contract = factory.deploy("initial value".to_string())?.send().await?;
+
+    // 8. get the contract's address
+    let addr = contract.address();
+
+    // 9. instantiate the contract
+    let contract = SimpleContract::new(addr, client.clone());
+
+    // 10. call the `setValue` method
+    // (first `await` returns a PendingTransaction, second one waits for it to be mined)
+    let _receipt = contract.set_value("hi".to_owned()).send().await?.await?;
+
+    // 11. get all events
+    let logs = contract
+        .value_changed_filter()
+        .from_block(0u64)
+        .query()
+        .await?;
+
+    // 12. get the new value
+    let value = contract.get_value().call().await?;
+
+    println!("Value: {}. Logs: {}", value, serde_json::to_string(&logs)?);
+
+    Ok(())
+}