Merge spec into types crate.

Also remove some pre-2018 `extern crate` calls.

eth2/genesis/Cargo.toml

@@ -6,7 +6,6 @@ edition = "2018"
 
 [dependencies]
 bls = { path = "../utils/bls"  }
-spec = { path = "../spec"  }
 ssz = { path = "../utils/ssz" }
 types = { path = "../types"  }
 validator_induction = { path = "../validator_induction"  }

eth2/genesis/src/beacon_block.rs

@@ -1,5 +1,4 @@
-use spec::ChainSpec;
-use types::{BeaconBlock, BeaconBlockBody, Eth1Data, Hash256};
+use types::{BeaconBlock, BeaconBlockBody, ChainSpec, Eth1Data, Hash256};
 
 /// Generate a genesis BeaconBlock.
 pub fn genesis_beacon_block(state_root: Hash256, spec: &ChainSpec) -> BeaconBlock {

eth2/genesis/src/beacon_state.rs

@@ -1,5 +1,4 @@
-use spec::ChainSpec;
-use types::{BeaconState, Crosslink, Fork};
+use types::{BeaconState, ChainSpec, Crosslink, Fork};
 use validator_shuffling::{shard_and_committees_for_cycle, ValidatorAssignmentError};
 
 #[derive(Debug, PartialEq)]

eth2/genesis/src/lib.rs

@@ -1,8 +1,3 @@
-extern crate spec;
-extern crate types;
-extern crate validator_induction;
-extern crate validator_shuffling;
-
 mod beacon_block;
 mod beacon_state;
 

eth2/spec/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name = "spec"
-version = "0.1.0"
-authors = ["Paul Hauner <paul@paulhauner.com>"]
-edition = "2018"
-
-[dependencies]
-bls = { path = "../utils/bls"  }
-types = { path = "../types" }

eth2/types/src/lib.rs

@@ -25,6 +25,7 @@ pub mod proposer_slashing;
 pub mod shard_committee;
 pub mod shard_reassignment_record;
 pub mod slashable_vote_data;
+pub mod spec;
 pub mod special_record;
 pub mod validator;
 pub mod validator_registry;
@@ -54,6 +55,7 @@ pub use crate::proposal_signed_data::ProposalSignedData;
 pub use crate::proposer_slashing::ProposerSlashing;
 pub use crate::shard_committee::ShardCommittee;
 pub use crate::slashable_vote_data::SlashableVoteData;
+pub use crate::spec::ChainSpec;
 pub use crate::special_record::{SpecialRecord, SpecialRecordKind};
 pub use crate::validator::{StatusFlags as ValidatorStatusFlags, Validator};
 pub use crate::validator_registry_delta_block::ValidatorRegistryDeltaBlock;

eth2/types/src/spec/foundation.rs

@@ -1,7 +1,7 @@
 use super::ChainSpec;
 use bls::{Keypair, PublicKey, SecretKey, Signature};
 
-use types::{Address, Eth1Data, Hash256, Validator};
+use crate::{Address, Eth1Data, Hash256, Validator};
 
 /// The size of a validators deposit in GWei.
 pub const DEPOSIT_GWEI: u64 = 32_000_000_000;

eth2/types/src/spec/mod.rs

@@ -1,10 +1,7 @@
-extern crate bls;
-extern crate types;
-
 mod foundation;
 
+use crate::{Address, Eth1Data, Hash256, Validator};
 use bls::Signature;
-use types::{Address, Eth1Data, Hash256, Validator};
 
 #[derive(PartialEq, Debug)]
 pub struct ChainSpec {

eth2/validator_induction/Cargo.toml

@@ -8,4 +8,3 @@ edition = "2018"
 bls = { path = "../utils/bls" }
 hashing = { path = "../utils/hashing" }
 types = { path = "../types" }
-spec = { path = "../spec" }

eth2/validator_induction/src/inductor.rs

@@ -1,6 +1,5 @@
 use bls::verify_proof_of_possession;
-use spec::ChainSpec;
-use types::{BeaconState, Deposit, Validator};
+use types::{BeaconState, ChainSpec, Deposit, Validator};
 
 #[derive(Debug, PartialEq, Clone)]
 pub enum ValidatorInductionError {

eth2/validator_induction/src/lib.rs

@@ -1,8 +1,3 @@
-extern crate bls;
-extern crate hashing;
-extern crate spec;
-extern crate types;
-
 mod inductor;
 
 pub use crate::inductor::{process_deposit, ValidatorInductionError};

eth2/validator_shuffling/Cargo.toml

@@ -6,6 +6,5 @@ edition = "2018"
 
 [dependencies]
 honey-badger-split = { path = "../utils/honey-badger-split" }
-spec = { path = "../spec" }
 types = { path = "../types" }
 vec_shuffle = { path = "../utils/vec_shuffle" }

eth2/validator_shuffling/src/lib.rs

@@ -1,8 +1,3 @@
-extern crate honey_badger_split;
-extern crate spec;
-extern crate types;
-extern crate vec_shuffle;
-
 mod shuffle;
 
 pub use crate::shuffle::{shard_and_committees_for_cycle, ValidatorAssignmentError};

eth2/validator_shuffling/src/shuffle.rs

@@ -1,8 +1,7 @@
 use std::cmp::min;
 
 use honey_badger_split::SplitExt;
-use spec::ChainSpec;
-use types::validator_registry::get_active_validator_indices;
+use types::{validator_registry::get_active_validator_indices, ChainSpec};
 use types::{ShardCommittee, Validator};
 use vec_shuffle::{shuffle, ShuffleErr};