Files
wasmtime/lib/wasm/src/lib.rs
Dan Gohman aeb9161e2c Update no_std support for Rust 2018 Edition.
With Rust 2018 Edition, the `mod std` trick to alias `core` names to
`std` no longer works, so switch to just having the code use `core`
explicitly.

So instead, switch to just using `core::*` for things that in core.
This is more consistent with other Rust no_std code. And it allows
us to enable `no_std` mode unconditionally in the crates that support
it, which makes testing a little easier.

There actually three cases:

 - For things in std and also in core, like `cmp`: Just use them via
   `core::*`.

 - For things in std and also in alloc, like `Vec`: Import alloc as std, as
   use them from std. This allows them to work on both stable (which
   doesn't provide alloc, but we don't support no_std mode anyway) and
   nightly.

 - For HashMap and similar which are not in core or alloc, import them in
   the top-level lib.rs files from either std or the third-party hashmap_core
   crate, and then have the code use super::hashmap_core.

Also, no_std support continues to be "best effort" at this time and not
something most people need to be testing.
2019-01-14 21:48:15 -08:00

67 lines
2.2 KiB
Rust

//! Performs translation from a wasm module in binary format to the in-memory form
//! of Cranelift IR. More particularly, it translates the code of all the functions bodies and
//! interacts with an environment implementing the
//! [`ModuleEnvironment`](trait.ModuleEnvironment.html)
//! trait to deal with tables, globals and linear memory.
//!
//! The crate provides a `DummyEnvironment` struct that will allow to translate the code of the
//! functions but will fail at execution.
//!
//! The main function of this module is [`translate_module`](fn.translate_module.html).
#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
#![warn(unused_import_braces)]
#![cfg_attr(feature = "std", deny(unstable_features))]
#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
#![cfg_attr(feature = "cargo-clippy", allow(clippy::new_without_default))]
#![cfg_attr(
feature = "cargo-clippy",
warn(
clippy::float_arithmetic,
clippy::mut_mut,
clippy::nonminimal_bool,
clippy::option_map_unwrap_or,
clippy::option_map_unwrap_or_else,
clippy::print_stdout,
clippy::unicode_not_nfc,
clippy::use_self
)
)]
#![no_std]
#![cfg_attr(not(feature = "std"), feature(alloc))]
#[cfg(not(feature = "std"))]
#[macro_use]
extern crate alloc as std;
#[cfg(feature = "std")]
#[macro_use]
extern crate std;
#[cfg(not(feature = "std"))]
use hashmap_core::{map as hash_map, HashMap};
#[cfg(feature = "std")]
use std::collections::{hash_map, HashMap};
mod code_translator;
mod environ;
mod func_translator;
mod module_translator;
mod sections_translator;
mod state;
mod translation_utils;
pub use crate::environ::{
DummyEnvironment, FuncEnvironment, GlobalVariable, ModuleEnvironment, ReturnMode, WasmError,
WasmResult,
};
pub use crate::func_translator::FuncTranslator;
pub use crate::module_translator::translate_module;
pub use crate::translation_utils::{
DefinedFuncIndex, DefinedGlobalIndex, DefinedMemoryIndex, DefinedTableIndex, FuncIndex, Global,
GlobalIndex, GlobalInit, Memory, MemoryIndex, SignatureIndex, Table, TableElementType,
TableIndex,
};
/// Version number of this crate.
pub const VERSION: &str = env!("CARGO_PKG_VERSION");