Auto merge of #52 - servo:dedup-virtual-overloaded-names, r=emilio

Deduplicate names of virtual overloaded methods. Fix #48

r? @emilio

Author: bors-servo

src/gen.rs

@@ -968,6 +968,7 @@ fn cstruct_to_rs(ctx: &mut GenCtx, name: &str, ci: CompInfo,
             vffields.push(field);
         }
 
+        let mut counts: HashMap<String, isize> = HashMap::new();
         for vm in ci.vmethods.iter() {
             let ty = match vm.ty {
                 TFuncPtr(ref sig) => {
@@ -977,7 +978,19 @@ fn cstruct_to_rs(ctx: &mut GenCtx, name: &str, ci: CompInfo,
                 _ => unreachable!()
             };
 
-            let name = first(rust_id(ctx, &vm.name));
+            let mut name = vm.name.clone();
+            let mut count = 0;
+            match counts.get(&vm.name) {
+                Some(x) => {
+                    count = *x;
+                    name.push_str(&x.to_string());
+                },
+                None => ()
+            }
+            count += 1;
+            counts.insert(vm.name.clone(), count);
+
+            let name = first(rust_id(ctx, &name));
 
             vffields.push(ast::StructField {
                 span: ctx.span,

src/parser.rs

@@ -1490,6 +1490,7 @@ pub fn parse(options: ClangParserOptions, logger: &Logger) -> Result<ModuleMap,
     }
 
     if ctx.err_count > 0 {
+        logger.error(&format!("{} errors after diagnostics", ctx.err_count));
         return Err(())
     }
 
@@ -1510,6 +1511,7 @@ pub fn parse(options: ClangParserOptions, logger: &Logger) -> Result<ModuleMap,
     ix.dispose();
 
     if ctx.err_count > 0 {
+        logger.error(&format!("{} errors after translation", ctx.err_count));
         return Err(())
     }
 

tests/expectations/virtual_overloaded.rs

@@ -0,0 +1,26 @@
+/* automatically generated by rust-bindgen */
+
+
+#![allow(non_snake_case)]
+
+
+#[repr(C)]
+#[derive(Debug, Copy)]
+pub struct Struct_C {
+    pub _vftable: *const _vftable_Struct_C,
+}
+#[repr(C)]
+pub struct _vftable_Struct_C {
+    pub do_thing: unsafe extern "C" fn(this: *mut ::std::os::raw::c_void,
+                                       arg1: ::std::os::raw::c_char),
+    pub do_thing1: unsafe extern "C" fn(this: *mut ::std::os::raw::c_void,
+                                        arg1: ::std::os::raw::c_int),
+}
+impl ::std::clone::Clone for Struct_C {
+    fn clone(&self) -> Self { *self }
+}
+#[test]
+fn bindgen_test_layout_Struct_C() {
+    assert_eq!(::std::mem::size_of::<Struct_C>() , 8usize);
+    assert_eq!(::std::mem::align_of::<Struct_C>() , 8usize);
+}

tests/headers/virtual_overloaded.hpp

@@ -0,0 +1,5 @@
+class C {
+public:
+    virtual void do_thing(char) { };
+    virtual void do_thing(int) { };
+};