rustwasm/wasm-bindgen
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Update to syn master

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This commit is contained in:
Alex Crichton 2017-12-31 14:40:57 -08:00
parent e03ef1c2a4
commit 8ba64bab68
2 changed files with 34 additions and 46 deletions
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78
crates/wasm-bindgen-macro/src/ast.rs
View File

@ -49,13 +49,11 @@ pub struct Method {
impl Program {
pub fn push_impl(&mut self, item: &syn::ItemImpl) {
match item.defaultness {
syn::Defaultness::Final => {}
_ => panic!("default impls are not supported"),
if item.defaultness.is_some() {
panic!("default impls are not supported");
}
match item.unsafety {
syn::Unsafety::Normal => {}
_ => panic!("unsafe impls are not supported"),
if item.unsafety.is_some() {
panic!("unsafe impls are not supported");
}
if item.trait_.is_some() {
panic!("trait impls are not supported");
@ -77,8 +75,8 @@ impl Program {
}
pub fn push_foreign_mod(&mut self, f: &syn::ItemForeignMod) {
match f.abi.kind {
syn::AbiKind::Named(ref l) if l.to_string() == "\"JS\"" => {}
match f.abi.name {
Some(ref l) if l.to_string() == "\"JS\"" => {}
_ => panic!("only foreign mods with the `JS` ABI are allowed"),
}
for item in f.items.iter() {
@ -116,13 +114,11 @@ impl Function {
syn::Visibility::Public(_) => {}
_ => panic!("can only bindgen public functions"),
}
match input.constness {
syn::Constness::NotConst => {}
_ => panic!("can only bindgen non-const functions"),
if input.constness.is_some() {
panic!("can only bindgen non-const functions");
}
match input.unsafety {
syn::Unsafety::Normal => {}
_ => panic!("can only bindgen safe functions"),
if input.unsafety.is_some() {
panic!("can only bindgen safe functions");
}
if !input.abi.is_none() {
panic!("can only bindgen Rust ABI functions")
@ -135,7 +131,7 @@ impl Function {
}
pub fn from_decl(name: syn::Ident, decl: &syn::FnDecl) -> Function {
if decl.variadic {
if decl.variadic.is_some() {
panic!("can't bindgen variadic functions")
}
if decl.generics.params.len() > 0 {
@ -155,7 +151,7 @@ impl Function {
let ret = match decl.output {
syn::ReturnType::Default => None,
syn::ReturnType::Type(ref t, _) => Some(Type::from(t)),
syn::ReturnType::Type(_, ref t) => Some(Type::from(t)),
};
Function { name, arguments, ret }
@ -170,7 +166,7 @@ impl Function {
}
pub fn struct_function_export_name(&self, s: syn::Ident) -> syn::Lit {
let name = self.shared().struct_function_export_name(s.sym.as_str());
let name = self.shared().struct_function_export_name(s.as_ref());
syn::Lit {
value: syn::LitKind::Other(Literal::string(&name)),
span: Default::default(),
@ -181,16 +177,16 @@ impl Function {
let mut generated_name = format!("__wasm_bindgen_generated");
if let Some(ns) = namespace {
generated_name.push_str("_");
generated_name.push_str(ns.sym.as_str());
generated_name.push_str(ns.as_ref());
}
generated_name.push_str("_");
generated_name.push_str(self.name.sym.as_str());
generated_name.push_str(self.name.as_ref());
syn::Ident::from(generated_name)
}
fn shared(&self) -> shared::Function {
shared::Function {
name: self.name.sym.as_str().to_string(),
name: self.name.as_ref().to_string(),
arguments: self.arguments.iter().map(|t| t.shared()).collect(),
ret: self.ret.as_ref().map(|t| t.shared()),
}
@ -204,11 +200,11 @@ pub fn extract_path_ident(path: &syn::Path) -> syn::Ident {
if path.segments.len() != 1 {
panic!("unsupported path that needs name resolution")
}
match path.segments.get(0).item().arguments {
match path.segments.first().unwrap().item().arguments {
syn::PathArguments::None => {}
_ => panic!("unsupported path that has path arguments")
}
path.segments.get(0).item().ident
path.segments.first().unwrap().item().ident
}
impl Type {
@ -218,14 +214,11 @@ impl Type {
if r.lifetime.is_some() {
panic!("can't have lifetimes on references yet");
}
let mutable = match r.ty.mutability {
syn::Mutability::Immutable => false,
syn::Mutability::Mutable(_) => true,
};
match r.ty.ty {
let mutable = r.mutability.is_some();
match *r.elem {
syn::Type::Path(syn::TypePath { qself: None, ref path }) => {
let ident = extract_path_ident(path);
match ident.sym.as_str() {
match ident.as_ref() {
"str" => {
if mutable {
panic!("mutable strings not allowed");
@ -245,7 +238,7 @@ impl Type {
}
syn::Type::Ptr(ref p) => {
let mutable = p.const_token.is_none();
let ident = match p.ty.ty {
let ident = match *p.elem {
syn::Type::Path(syn::TypePath { qself: None, ref path }) => {
extract_path_ident(path)
}
@ -259,7 +252,7 @@ impl Type {
}
syn::Type::Path(syn::TypePath { qself: None, ref path }) => {
let ident = extract_path_ident(path);
match ident.sym.as_str() {
match ident.as_ref() {
"i8" |
"u8" |
"u16" |
@ -318,25 +311,23 @@ impl Struct {
syn::ImplItem::Type(_) => panic!("type definitions in impls aren't supported"),
syn::ImplItem::Method(ref m) => m,
syn::ImplItem::Macro(_) => panic!("macros in impls aren't supported"),
syn::ImplItem::Verbatim(_) => panic!("unparsed impl item?"),
};
match method.vis {
syn::Visibility::Public(_) => {}
_ => return,
}
match method.defaultness {
syn::Defaultness::Final => {}
_ => panic!("default methods are not supported"),
if method.defaultness.is_some() {
panic!("default methods are not supported");
}
match method.sig.constness {
syn::Constness::NotConst => {}
_ => panic!("can only bindgen non-const functions"),
if method.sig.constness.is_some() {
panic!("can only bindgen non-const functions");
}
match method.sig.unsafety {
syn::Unsafety::Normal => {}
_ => panic!("can only bindgen safe functions"),
if method.sig.unsafety.is_some() {
panic!("can only bindgen safe functions");
}
if method.sig.decl.variadic {
if method.sig.decl.variadic.is_some() {
panic!("can't bindgen variadic functions")
}
if method.sig.decl.generics.params.len() > 0 {
@ -354,10 +345,7 @@ impl Struct {
}
syn::FnArg::SelfRef(ref a) => {
assert!(mutable.is_none());
mutable = Some(match a.mutbl {
syn::Mutability::Mutable(_) => true,
syn::Mutability::Immutable => false,
});
mutable = Some(a.mutability.is_some());
None
}
_ => panic!("arguments cannot be `self` or ignored"),
@ -368,7 +356,7 @@ impl Struct {
let ret = match method.sig.decl.output {
syn::ReturnType::Default => None,
syn::ReturnType::Type(ref t, _) => Some(Type::from(t)),
syn::ReturnType::Type(_, ref t) => Some(Type::from(t)),
};
let function = Function { name: method.sig.ident, arguments, ret };

2
crates/wasm-bindgen-macro/src/lib.rs
View File

@ -435,7 +435,7 @@ fn bindgen_import(import: &ast::Import, tokens: &mut Tokens) {
.map(|arg| {
match arg.pat {
syn::Pat::Ident(syn::PatIdent {
mode: syn::BindingMode::ByValue(_),
by_ref: None,
ident,
subpat: None,
..