wip

Author: alexytsu

Cargo.toml

@@ -3,4 +3,5 @@
 members = [
   "fvm_dispatch",
   "fil_token",
+  "testing/actors/fil_token_actor",
 ]

fil_token/Cargo.toml

@@ -6,4 +6,11 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-fvm_shared = { version = "0.8.0" }
+anyhow = "1.0.56"
+cid = { version = "0.8.3", default-features = false, features = ["serde-codec"] }
+fvm_ipld_blockstore = "0.1.1"
+fvm_ipld_hamt = "0.5.1"
+fvm_ipld_amt = { version = "0.4.2", features = ["go-interop"] }
+fvm_ipld_encoding = "0.2.2"
+fvm_shared = { version = "0.8.0" }
+serde = { version = "1.0.136", features = ["derive"] }

fil_token/src/token/mod.rs

@@ -1,7 +1,17 @@
 pub mod receiver;
 
+use anyhow::anyhow;
+use cid::Cid;
+
+use fvm_ipld_blockstore::Blockstore;
+use fvm_ipld_encoding::tuple::*;
+use fvm_ipld_encoding::Cbor;
+use fvm_ipld_hamt::Hamt;
+
 use fvm_shared::address::Address;
+use fvm_shared::bigint::bigint_ser;
 pub use fvm_shared::econ::TokenAmount;
+use fvm_shared::HAMT_BIT_WIDTH;
 
 pub type Result<T> = std::result::Result<T, TokenError>;
 pub enum TokenError {}
@@ -28,3 +38,82 @@ pub trait Token {
 
     fn burn_from(from: Address, amount: TokenAmount, data: &[u8]) -> Result<TokenAmount>;
 }
+
+/// Token actor state
+#[derive(Serialize_tuple, Deserialize_tuple, Clone)]
+pub struct DefaultToken {
+    #[serde(with = "bigint_ser")]
+    supply: TokenAmount,
+    name: String,
+    symbol: String,
+
+    balances: Cid,
+    allowances: Cid,
+}
+
+/// Default token implementation
+impl DefaultToken {
+    pub fn new<BS>(name: &str, symbol: &str, store: &BS) -> anyhow::Result<Self>
+    where
+        BS: Blockstore,
+    {
+        let empty_balance_map = Hamt::<_, ()>::new_with_bit_width(store, HAMT_BIT_WIDTH)
+            .flush()
+            .map_err(|e| anyhow!("Failed to create empty balances map state {}", e))?;
+        let empty_allowances_map = Hamt::<_, ()>::new_with_bit_width(store, HAMT_BIT_WIDTH)
+            .flush()
+            .map_err(|e| anyhow!("Failed to create empty balances map state {}", e))?;
+
+        Ok(Self {
+            supply: Default::default(),
+            name: name.to_string(),
+            symbol: symbol.to_string(),
+            balances: empty_balance_map,
+            allowances: empty_allowances_map,
+        })
+    }
+}
+
+impl Cbor for DefaultToken {}
+
+impl Token for DefaultToken {
+    fn name() -> String {
+        todo!()
+    }
+
+    fn symbol() -> String {
+        todo!()
+    }
+
+    fn total_supply() -> TokenAmount {
+        todo!()
+    }
+
+    fn balance_of(holder: Address) -> Result<TokenAmount> {
+        todo!()
+    }
+
+    fn increase_allowance(spender: Address, value: TokenAmount) -> Result<TokenAmount> {
+        todo!()
+    }
+
+    fn decrease_allowance(spender: Address, value: TokenAmount) -> Result<TokenAmount> {
+        todo!()
+    }
+
+    fn revoke_allowance(spender: Address) -> Result<()> {
+        todo!()
+    }
+
+    fn allowance(owner: Address, spender: Address) -> Result<TokenAmount> {
+        todo!()
+    }
+
+    fn burn(amount: TokenAmount, data: &[u8]) -> Result<TokenAmount> {
+        todo!()
+    }
+
+    fn burn_from(from: Address, amount: TokenAmount, data: &[u8]) -> Result<TokenAmount> {
+        todo!()
+    }
+}

testing/actors/fil_token_actor/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "fil_token_actor"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+fil_token = { version = "0.1.0", path = "../../../fil_token" }
+
+[dev-dependencies]
+fvm_integration_tests = {version = "0.1.0", git = "https://github.com/filecoin-project/ref-fvm" }

testing/actors/fil_token_actor/src/lib.rs

@@ -0,0 +1,2 @@
+#[cfg(test)]
+mod tests {}