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Support u128/i128 in runtime interface (#4703)

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* Support `u128`/`i128` in runtime interface

This implements support for `u128`/`i128` as parameters/return value in
runtime interfaces. As we can not pass them as identity, as for the
other primitives types, we pass them as an pointer to an `[u8; 16]` array.

* Remove some unsafe code usage
This commit is contained in:
Bastian Köcher
2020-01-22 12:17:52 +01:00
committed by GitHub
parent c1750c5c28
commit 07d738ea3e
4 changed files with 80 additions and 0 deletions
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substrate/primitives/runtime-interface/src/lib.rs
+3
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@@ -81,10 +81,12 @@
//! | `u16` | `u16` | `Identity` |
//! | `u32` | `u32` | `Identity` |
//! | `u64` | `u64` | `Identity` |
//! | `i128` | `u32` | `v.as_ptr()` (pointer to a 16 byte array) |
//! | `i8` | `i8` | `Identity` |
//! | `i16` | `i16` | `Identity` |
//! | `i32` | `i32` | `Identity` |
//! | `i64` | `i64` | `Identity` |
//! | `u128` | `u32` | `v.as_ptr()` (pointer to a 16 byte array) |
//! | `bool` | `u8` | `if v { 1 } else { 0 }` |
//! | `&str` | `u64` | <code>v.len() 32bit << 32 &#124; v.as_ptr() 32bit</code> |
//! | `&[u8]` | `u64` | <code>v.len() 32bit << 32 &#124; v.as_ptr() 32bit</code> |
@@ -93,6 +95,7 @@
//! | `&[T] where T: Encode` | `u64` | `let e = v.encode();`<br><br><code>e.len() 32bit << 32 &#124; e.as_ptr() 32bit</code> |
//! | `[u8; N]` | `u32` | `v.as_ptr()` |
//! | `*const T` | `u32` | `Identity` |
//! | `Option<T>` | `u64` | `let e = v.encode();`<br><br><code>e.len() 32bit << 32 &#124; e.as_ptr() 32bit</code> |
//! | [`T where T: PassBy<PassBy=Inner>`](pass_by::Inner) | Depends on inner | Depends on inner |
//! | [`T where T: PassBy<PassBy=Codec>`](pass_by::Codec) | `u64`| <code>v.len() 32bit << 32 &#124; v.as_ptr() 32bit</code> |
//!