Update aster and syntex.

Author: emilio

libbindgen/Cargo.toml

@@ -29,12 +29,12 @@ cfg-if = "0.1.0"
 clang-sys = { version = "0.12", features = ["runtime", "clang_3_9"] }
 lazy_static = "0.2.1"
 rustc-serialize = "0.3.19"
-syntex_syntax = "0.50"
+syntex_syntax = "0.54"
 regex = "0.2"
 
 [dependencies.aster]
 features = ["with-syntex"]
-version = "0.34"
+version = "0.38"
 
 [dependencies.env_logger]
 optional = true
@@ -46,7 +46,7 @@ version = "0.3"
 
 [dependencies.quasi]
 features = ["with-syntex"]
-version = "0.26"
+version = "0.29"
 
 [features]
 assert_no_dangling_items = []

libbindgen/src/codegen/helpers.rs

@@ -153,16 +153,15 @@ pub mod ast_ty {
     }
 
     pub fn float_expr(f: f64) -> P<ast::Expr> {
-        use aster::str::ToInternedString;
+        use aster::symbol::ToSymbol;
         let mut string = f.to_string();
 
         // So it gets properly recognised as a floating point constant.
         if !string.contains('.') {
             string.push('.');
         }
 
-        let interned_str = string.as_str().to_interned_string();
-        let kind = ast::LitKind::FloatUnsuffixed(interned_str);
+        let kind = ast::LitKind::FloatUnsuffixed(string.as_str().to_symbol());
         aster::AstBuilder::new().expr().lit().build_lit(kind)
     }
 

libbindgen/src/codegen/mod.rs

@@ -1863,16 +1863,19 @@ impl ToRustTy for Type {
                 if let ast::TyKind::Path(_, ref mut path) = inner_ty.node {
                     let template_args = template_args.iter()
                         .map(|arg| arg.to_rust_ty(ctx))
-                        .collect();
+                        .collect::<Vec<_>>();
 
-                    path.segments.last_mut().unwrap().parameters =
-                        ast::PathParameters::AngleBracketed(
+                    path.segments.last_mut().unwrap().parameters = if template_args.is_empty() {
+                        None
+                    } else {
+                        Some(P(ast::PathParameters::AngleBracketed(
                             ast::AngleBracketedParameterData {
                                 lifetimes: vec![],
                                 types: P::from_vec(template_args),
                                 bindings: P::from_vec(vec![]),
                             }
-                        );
+                        )))
+                    }
                 }
 
                 P(inner_ty)

libbindgen/src/ir/context.rs

@@ -461,6 +461,7 @@ impl<'ctx> BindgenContext<'ctx> {
     pub fn gen<F, Out>(&mut self, cb: F) -> Out
         where F: FnOnce(&Self) -> Out,
     {
+        use aster::symbol::ToSymbol;
         use syntax::ext::expand::ExpansionConfig;
         use syntax::codemap::{ExpnInfo, MacroBang, NameAndSpan};
         use syntax::ext::base;
@@ -475,7 +476,7 @@ impl<'ctx> BindgenContext<'ctx> {
         ctx.0.bt_push(ExpnInfo {
             call_site: self.span,
             callee: NameAndSpan {
-                format: MacroBang(parse::token::intern("")),
+                format: MacroBang("".to_symbol()),
                 allow_internal_unstable: false,
                 span: None,
             },