parser: Implement nocopy annotation.

Author: emilio

src/parser.rs

@@ -517,6 +517,8 @@ struct Annotations {
     opaque: bool,
     hide: bool,
     use_as: Option<String>,
+    /// Disable deriving copy/clone on this struct.
+    no_copy: bool,
 }
 
 impl Annotations {
@@ -525,6 +527,7 @@ impl Annotations {
             opaque: false,
             hide: false,
             use_as: None,
+            no_copy: false,
         };
 
         anno.parse(&cursor.comment());
@@ -542,6 +545,7 @@ impl Annotations {
                     "opaque" => self.opaque = true,
                     "hide" => self.hide = true,
                     "replaces" => self.use_as = Some(comment.get_tag_attr_value(i)),
+                    "nocopy" => self.no_copy = true,
                     _ => (),
                 }
             }
@@ -1089,6 +1093,10 @@ fn visit_top(cursor: &Cursor,
                     ci.borrow_mut().hide = true;
                 }
 
+                if anno.no_copy {
+                    ci.borrow_mut().no_copy = true;
+                }
+
                 // If we find a previous translation, we take it now and carry
                 // on.
                 //

src/types.rs

@@ -429,6 +429,8 @@ pub struct CompInfo {
     pub opaque: bool,
     pub base_members: usize,
     pub layout: Layout,
+    /// If this struct is explicitely marked as non-copiable.
+    pub no_copy: bool,
     /// Typedef'd types names, that we'll resolve early to avoid name conflicts
     pub typedefs: Vec<String>,
     /// If this type has a template parameter which is not a type (e.g.: a size_t)
@@ -479,6 +481,7 @@ impl CompInfo {
             hide: false,
             parser_cursor: None,
             opaque: false,
+            no_copy: false,
             base_members: 0,
             layout: layout,
             typedefs: vec![],
@@ -570,6 +573,9 @@ impl CompInfo {
     }
 
     pub fn can_derive_copy(&self) -> bool {
+        if self.no_copy {
+            return false;
+        }
         match self.kind {
             CompKind::Union => true,
             CompKind::Struct => {

tests/expectations/no_copy.rs

@@ -0,0 +1,14 @@
+/* automatically generated by rust-bindgen */
+
+
+#![feature(const_fn)]
+#![allow(non_snake_case)]
+
+
+/** <div rustbindgen nocopy></div> */
+#[repr(C)]
+#[derive(Debug)]
+pub struct Struct_CopiableButWait<T> {
+    pub whatever: ::std::os::raw::c_int,
+    pub _phantom0: ::std::marker::PhantomData<T>,
+}

tests/headers/no_copy.hpp

@@ -0,0 +1,6 @@
+
+/** <div rustbindgen nocopy></div> */
+template<typename T>
+class CopiableButWait {
+    int whatever;
+};