Add pallet-assets support for a mixer (#163)

* Add pallet-assets support for a mixer

* Add pallet

* Fmt

Cargo.toml

@@ -6,6 +6,7 @@ members = [
 	"pallets/merkle",
 	"pallets/merkle/rpc",
 	"pallets/mixer",
+	"pallets/assets-mixer",
 	"pallets/tokens",
 	"pallets/traits",
 	"pallets/utilities",

pallets/assets-mixer/Cargo.toml

@@ -0,0 +1,69 @@
+[package]
+authors = ["Drew Stone <drew@commonwealth.im>, Filip Lazovic"]
+description = "Pallet for mixing pallet-assets assets in a zero-knowledge mixer"
+edition = "2018"
+license = "Unlicense"
+name = "pallet-assets-mixer"
+version = "3.0.0"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+log = "0.4.8"
+codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
+pallet-assets = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+pallet-balances = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+frame-support = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+frame-system = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+sp-std = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+sp-runtime = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+
+merkle = { package = "pallet-merkle", path = "../merkle", default-features = false }
+
+serde = { version = "1.0.101", optional = true, features = ["derive"] }
+merlin = { version = "2.0.0", default-features = false }
+frame-benchmarking = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6", optional = true }
+
+[dependencies.bulletproofs]
+version = "2.0.3"
+package = "webb-bulletproofs"
+default-features = false
+features = ["yoloproofs"]
+
+[dependencies.bulletproofs-gadgets]
+version = "2.1.1"
+default-features = false
+
+[dependencies.curve25519-dalek]
+version = "3.0.0"
+default-features = false
+features = ["u64_backend", "alloc"]
+
+[dependencies.bencher]
+version = "0.1.5"
+
+[dev-dependencies]
+sp-core = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+sp-io = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+pallet-randomness-collective-flip = { default-features = false, version = "3.0.0", git = "https://github.com/paritytech/substrate.git", branch = "polkadot-v0.9.6" }
+
+[features]
+default = ["std"]
+std = [
+    "serde",
+    "codec/std",
+    "pallet-assets/std",
+    "pallet-balances/std",
+    "frame-support/std",
+    "frame-system/std",
+    "bulletproofs/std",
+    "bulletproofs-gadgets/std",
+    "frame-benchmarking/std",
+    "merkle/std",
+]
+runtime-benchmarks = [
+    "frame-benchmarking",
+    "frame-system/runtime-benchmarks",
+    "frame-support/runtime-benchmarks",
+]