Merge pull request #689 from michaelvoronov/wasi

Add WASI target support

.travis.yml

@@ -63,6 +63,11 @@ matrix:
       env: TARGET=wasm32-unknown-unknown
       install:
         - rustup target add "${TARGET}"
+    - rust: nightly
+      name: WASI
+      env: TARGET=wasm32-wasi
+      install:
+        - rustup target add "${TARGET}"
   allow_failures:
     - rust: nightly
       name: Clippy

src/buffer.rs

@@ -8,7 +8,7 @@
 // is 100% safe but the implementation is fragile internally.
 
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "proc-macro"
 ))]
 use crate::proc_macro as pm;
@@ -101,7 +101,7 @@ impl TokenBuffer {
     /// *This method is available if Syn is built with both the `"parsing"` and
     /// `"proc-macro"` features.*
     #[cfg(all(
-        not(all(target_arch = "wasm32", target_os = "unknown")),
+        not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
         feature = "proc-macro"
     ))]
     pub fn new(stream: pm::TokenStream) -> TokenBuffer {

src/export.rs

@@ -16,7 +16,7 @@ pub use proc_macro2::{Span, TokenStream as TokenStream2};
 pub use crate::span::IntoSpans;
 
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "proc-macro"
 ))]
 pub use proc_macro::TokenStream;

src/lib.rs

@@ -267,7 +267,7 @@
 )]
 
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "proc-macro"
 ))]
 extern crate proc_macro;
@@ -415,7 +415,7 @@ pub mod parse_quote;
 
 // Not public API except the `parse_macro_input!` macro.
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "parsing",
     feature = "proc-macro"
 ))]
@@ -616,7 +616,7 @@ pub use crate::error::{Error, Result};
 /// }
 /// ```
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "parsing",
     feature = "proc-macro"
 ))]

src/parse.rs

@@ -200,7 +200,7 @@ use std::rc::Rc;
 use std::str::FromStr;
 
 #[cfg(all(
-    not(all(target_arch = "wasm32", target_os = "unknown")),
+    not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
     feature = "proc-macro"
 ))]
 use crate::proc_macro;
@@ -1066,7 +1066,7 @@ pub trait Parser: Sized {
     /// *This method is available if Syn is built with both the `"parsing"` and
     /// `"proc-macro"` features.*
     #[cfg(all(
-        not(all(target_arch = "wasm32", target_os = "unknown")),
+        not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "wasi"))),
         feature = "proc-macro"
     ))]
     fn parse(self, tokens: proc_macro::TokenStream) -> Result<Self::Output> {