define context trait and initialize statement table

substrate/Cargo.lock

@@ -534,6 +534,11 @@ name = "odds"
 version = "0.2.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "owning_ref"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "owning_ref"
 version = "0.3.3"
@@ -542,6 +547,16 @@ dependencies = [
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 ]
 
+[[package]]
+name = "parking_lot"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "parking_lot_core 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thread-id 3.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "parking_lot"
 version = "0.4.8"
@@ -607,7 +622,8 @@ name = "polkadot-candidate-agreement"
 version = "0.1.0"
 dependencies = [
  "futures 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "polkadot-primitives 0.1.0",
+ "parking_lot 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-timer 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -955,6 +971,16 @@ dependencies = [
  "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "thread-id"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "thread_local"
 version = "0.3.4"
@@ -1030,6 +1056,15 @@ dependencies = [
  "futures 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "triehash"
 version = "0.1.0"
@@ -1178,7 +1213,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum num-traits 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "99843c856d68d8b4313b03a17e33c4bb42ae8f6610ea81b28abe076ac721b9b0"
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+"checksum owning_ref 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "9d52571ddcb42e9c900c901a18d8d67e393df723fcd51dd59c5b1a85d0acb6cc"
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
+"checksum parking_lot 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "fa12d706797d42551663426a45e2db2e0364bd1dbf6aeada87e89c5f981f43e9"
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@@ -1217,6 +1254,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
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+"checksum thread-id 3.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2af4d6289a69a35c4d3aea737add39685f2784122c28119a7713165a63d68c9d"
 "checksum thread_local 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "1697c4b57aeeb7a536b647165a2825faddffb1d3bad386d507709bd51a90bb14"
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@@ -1224,6 +1262,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum tokio-io 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "514aae203178929dbf03318ad7c683126672d4d96eccb77b29603d33c9e25743"
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+"checksum tokio-timer 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6131e780037787ff1b3f8aad9da83bca02438b72277850dd6ad0d455e0e20efc"
 "checksum triehash 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9291c7f0fae44858b5e087dd462afb382354120003778f1695b44aab98c7abd7"
 "checksum uint 0.1.0 (git+https://github.com/paritytech/primitives.git)" = "<none>"
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