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bors[bot] e078099687 Merge #1362 
1362: feat(interface-types) Remove allocator index from `string.lower_memory` r=Hywan a=Hywan

This PR updates `string.lower_memory` to remove the allocator index. Indeed, the string pointer is assumed to be present on the stack.
Also, this PR updates `string.size` to pop, and not to peek, the string to compute the length from.

That way, it matches the WIT proposal.

Co-authored-by: Ivan Enderlin <ivan@mnt.io>
2020-04-09 08:05:50 +00:00
src Merge #1362 2020-04-09 08:05:50 +00:00
tests feat(interface-types) Add the Vec1 type to represent a non-empty vector. 2020-04-03 16:13:44 +02:00
Cargo.toml doc(interface-types) Fix typos. 2020-04-03 14:46:59 +02:00
README.md doc(interface-types) Add record instructions. 2020-04-07 11:58:13 +02:00

README.md

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Wasmer Interface Types

Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully compatible with WASI, Emscripten, Rust and Go. Learn more.

This crate is an implementation of the living WebAssembly Interface Types standard.

Encoders and decoders

The wasmer-interface-types crate comes with an encoder and a decoder for the WAT format, and the binary format, for the WebAssembly Interface Types. An encoder writes an AST into another format, like WAT or binary. A decoder reads an AST from another format, like WAT or binary.

Instructions

Very basically, WebAssembly Interface Types defines a set of instructions, used by adapters to transform the data between WebAssembly core and the outside world (learn mode).

Here is the instructions that are implemented by this crate:

Instruction WAT encoder/decoder Binary encoder/decoder Interpreter Comment
arg.get ✅ ✅ ✅
call-core ✅ ✅ ✅
s8.from_i32 ✅ ✅ ✅
s8.from_i64 ✅ ✅ ✅
s16.from_i32 ✅ ✅ ✅
s16.from_i64 ✅ ✅ ✅
s32.from_i32 ✅ ✅ ✅
s32.from_i64 ✅ ✅ ✅
s64.from_i32 ✅ ✅ ✅
s64.from_i64 ✅ ✅ ✅
i32.from_s8 ✅ ✅ ✅
i32.from_s16 ✅ ✅ ✅
i32.from_s32 ✅ ✅ ✅
i32.from_s64 ✅ ✅ ✅
i64.from_s8 ✅ ✅ ✅
i64.from_s16 ✅ ✅ ✅
i64.from_s32 ✅ ✅ ✅
i64.from_s64 ✅ ✅ ✅
u8.from_i32 ✅ ✅ ✅
u8.from_i64 ✅ ✅ ✅
u16.from_i32 ✅ ✅ ✅
u16.from_i64 ✅ ✅ ✅
u32.from_i32 ✅ ✅ ✅
u32.from_i64 ✅ ✅ ✅
u64.from_i32 ✅ ✅ ✅
u64.from_i64 ✅ ✅ ✅
i32.from_u8 ✅ ✅ ✅
i32.from_u16 ✅ ✅ ✅
i32.from_u32 ✅ ✅ ✅
i32.from_u64 ✅ ✅ ✅
i64.from_u8 ✅ ✅ ✅
i64.from_u16 ✅ ✅ ✅
i64.from_u32 ✅ ✅ ✅
i64.from_u64 ✅ ✅ ✅
string.lift_memory ✅ ✅ ✅ #memidx is not supported; #encoding is not supported but UTF-8 is assumed
string.lower_memory ✅ ✅ ✅ #memidx is not supported; #encoding is not supported but UTF-8 is assumed
string.size ✅ ✅ ✅ #encoding is not supported but UTF-8 is assumed
record.lift ✅ ✅ ✅
record.lower ✅ ✅ ✅
call-adapter ❌ ❌ ❌
defer-call-core ❌ ❌ ❌