Fold the wit-bindgen-rust-lib crate into wit-bindgen-rust (#683)

* Split `FunctionBindgen` into its own file

* rust: Split interface generation to a separate file

* Move `RustFunctionGenerator` out of `rust-lib`

* Move `RustGenerator` out of `rust-lib`

* Fold the rust-lib crate into the rust crate

Cargo.toml

@@ -40,7 +40,6 @@ wit-bindgen-rust = { path = "crates/rust", version = "0.12.0" }
 wit-bindgen-teavm-java = { path = 'crates/teavm-java', version = '0.12.0' }
 wit-bindgen-go = { path = 'crates/go', version = '0.12.0' }
 wit-bindgen-markdown = { path = 'crates/markdown', version = '0.12.0' }
-wit-bindgen-rust-lib = { path = 'crates/rust-lib', version = '0.12.0' }
 wit-bindgen = { path = 'crates/guest-rust', version = '0.12.0', default-features = false }
 wit-bindgen-rust-macro-shared = { path = 'crates/rust-macro-shared', version = '0.3.0' }
 

crates/rust-macro/Cargo.toml

@@ -21,6 +21,5 @@ syn = { version = "2.0", features = ["printing"] }
 quote = "1"
 wit-bindgen-core = { workspace = true }
 wit-bindgen-rust = { workspace = true }
-wit-bindgen-rust-lib = { workspace = true }
 wit-component = { workspace = true }
 anyhow = { workspace = true }

crates/rust-macro/src/lib.rs

@@ -5,8 +5,7 @@ use syn::parse::{Error, Parse, ParseStream, Result};
 use syn::punctuated::Punctuated;
 use syn::{braced, token, Token};
 use wit_bindgen_core::wit_parser::{PackageId, Resolve, UnresolvedPackage, WorldId};
-use wit_bindgen_rust::Opts;
-use wit_bindgen_rust_lib::Ownership;
+use wit_bindgen_rust::{Opts, Ownership};
 
 #[proc_macro]
 pub fn generate(input: proc_macro::TokenStream) -> proc_macro::TokenStream {

crates/rust/Cargo.toml

@@ -18,7 +18,6 @@ doctest = false
 [dependencies]
 anyhow = { workspace = true }
 wit-bindgen-core = { workspace = true }
-wit-bindgen-rust-lib = { workspace = true }
 wit-component = { workspace = true }
 wasm-metadata = { workspace = true }
 heck = { workspace = true }