refactor: adds function prototype

crates/mun/src/main.rs

@@ -98,14 +98,16 @@ fn start(matches: &ArgMatches) -> Result<(), failure::Error> {
 
     let borrowed = runtime.borrow();
     let entry_point = matches.value_of("entry").unwrap_or("main");
-    let fn_info = borrowed.get_function_info(entry_point).ok_or_else(|| {
-        std::io::Error::new(
-            std::io::ErrorKind::InvalidInput,
-            format!("Failed to obtain entry point '{}'", entry_point),
-        )
-    })?;
-
-    if let Some(ret_type) = fn_info.signature.return_type() {
+    let fn_definition = borrowed
+        .get_function_definition(entry_point)
+        .ok_or_else(|| {
+            std::io::Error::new(
+                std::io::ErrorKind::InvalidInput,
+                format!("Failed to obtain entry point '{}'", entry_point),
+            )
+        })?;
+
+    if let Some(ret_type) = fn_definition.prototype.signature.return_type() {
         let type_guid = &ret_type.guid;
         if *type_guid == bool::type_guid() {
             let result: bool =

crates/mun_abi/src/autogen.rs

@@ -3,7 +3,7 @@
 /* automatically generated by rust-bindgen */
 
 #![allow(non_snake_case, non_camel_case_types, non_upper_case_globals)]
-use crate::{Privacy, StructMemoryKind, TypeGroup};
+use crate::{StructMemoryKind, TypeGroup};
 
 #[doc = " Represents a globally unique identifier (GUID)."]
 #[doc = ""]
@@ -122,22 +122,18 @@ fn bindgen_test_layout_TypeInfo() {
 #[repr(C)]
 #[derive(Clone, Debug)]
 pub struct FunctionSignature {
-    #[doc = " Function name"]
-    pub name: *const ::std::os::raw::c_char,
     #[doc = " Argument types"]
     pub arg_types: *const *const TypeInfo,
     #[doc = " Optional return type"]
     pub return_type: *const TypeInfo,
     #[doc = " Number of argument types"]
     pub num_arg_types: u16,
-    #[doc = " Function accessibility level"]
-    pub privacy: Privacy,
 }
 #[test]
 fn bindgen_test_layout_FunctionSignature() {
     assert_eq!(
         ::std::mem::size_of::<FunctionSignature>(),
-        32usize,
+        24usize,
         concat!("Size of: ", stringify!(FunctionSignature))
     );
     assert_eq!(
@@ -146,97 +142,123 @@ fn bindgen_test_layout_FunctionSignature() {
         concat!("Alignment of ", stringify!(FunctionSignature))
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).name as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).arg_types as *const _ as usize },
         0usize,
         concat!(
             "Offset of field: ",
             stringify!(FunctionSignature),
             "::",
-            stringify!(name)
+            stringify!(arg_types)
         )
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).arg_types as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).return_type as *const _ as usize },
         8usize,
         concat!(
             "Offset of field: ",
             stringify!(FunctionSignature),
             "::",
-            stringify!(arg_types)
+            stringify!(return_type)
         )
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).return_type as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).num_arg_types as *const _ as usize },
         16usize,
         concat!(
             "Offset of field: ",
             stringify!(FunctionSignature),
             "::",
-            stringify!(return_type)
+            stringify!(num_arg_types)
         )
     );
+}
+#[doc = " Represents a function prototype. A function prototype contains the name,"]
+#[doc = " type signature, but not an implementation."]
+#[doc = ""]
+#[doc = " <div rustbindgen derive=\"Clone\" derive=\"Debug\"></div>"]
+#[repr(C)]
+#[derive(Clone, Debug)]
+pub struct FunctionPrototype {
+    #[doc = " Function name"]
+    pub name: *const ::std::os::raw::c_char,
+    #[doc = " The type signature of the function"]
+    pub signature: FunctionSignature,
+}
+#[test]
+fn bindgen_test_layout_FunctionPrototype() {
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).num_arg_types as *const _ as usize },
-        24usize,
+        ::std::mem::size_of::<FunctionPrototype>(),
+        32usize,
+        concat!("Size of: ", stringify!(FunctionPrototype))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<FunctionPrototype>(),
+        8usize,
+        concat!("Alignment of ", stringify!(FunctionPrototype))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<FunctionPrototype>())).name as *const _ as usize },
+        0usize,
         concat!(
             "Offset of field: ",
-            stringify!(FunctionSignature),
+            stringify!(FunctionPrototype),
             "::",
-            stringify!(num_arg_types)
+            stringify!(name)
         )
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionSignature>())).privacy as *const _ as usize },
-        26usize,
+        unsafe { &(*(::std::ptr::null::<FunctionPrototype>())).signature as *const _ as usize },
+        8usize,
         concat!(
             "Offset of field: ",
-            stringify!(FunctionSignature),
+            stringify!(FunctionPrototype),
             "::",
-            stringify!(privacy)
+            stringify!(signature)
         )
     );
 }
-#[doc = " Represents a function declaration."]
+#[doc = " Represents a function definition. A function definition contains the name,"]
+#[doc = " type signature, and a pointer to the implementation."]
 #[doc = ""]
 #[doc = " `fn_ptr` can be used to call the declared function."]
 #[doc = ""]
 #[doc = " <div rustbindgen derive=\"Clone\" derive=\"Debug\"></div>"]
 #[repr(C)]
 #[derive(Clone, Debug)]
-pub struct FunctionInfo {
-    #[doc = " Function signature"]
-    pub signature: FunctionSignature,
+pub struct FunctionDefinition {
+    #[doc = " Function prototype"]
+    pub prototype: FunctionPrototype,
     #[doc = " Function pointer"]
     pub fn_ptr: *const ::std::os::raw::c_void,
 }
 #[test]
-fn bindgen_test_layout_FunctionInfo() {
+fn bindgen_test_layout_FunctionDefinition() {
     assert_eq!(
-        ::std::mem::size_of::<FunctionInfo>(),
+        ::std::mem::size_of::<FunctionDefinition>(),
         40usize,
-        concat!("Size of: ", stringify!(FunctionInfo))
+        concat!("Size of: ", stringify!(FunctionDefinition))
     );
     assert_eq!(
-        ::std::mem::align_of::<FunctionInfo>(),
+        ::std::mem::align_of::<FunctionDefinition>(),
         8usize,
-        concat!("Alignment of ", stringify!(FunctionInfo))
+        concat!("Alignment of ", stringify!(FunctionDefinition))
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionInfo>())).signature as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<FunctionDefinition>())).prototype as *const _ as usize },
         0usize,
         concat!(
             "Offset of field: ",
-            stringify!(FunctionInfo),
+            stringify!(FunctionDefinition),
             "::",
-            stringify!(signature)
+            stringify!(prototype)
         )
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<FunctionInfo>())).fn_ptr as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<FunctionDefinition>())).fn_ptr as *const _ as usize },
         32usize,
         concat!(
             "Offset of field: ",
-            stringify!(FunctionInfo),
+            stringify!(FunctionDefinition),
             "::",
             stringify!(fn_ptr)
         )
@@ -331,7 +353,7 @@ pub struct ModuleInfo {
     #[doc = " Module path"]
     pub path: *const ::std::os::raw::c_char,
     #[doc = " Module functions"]
-    pub functions: *const FunctionInfo,
+    pub functions: *const FunctionDefinition,
     #[doc = " Number of module functions"]
     pub num_functions: u32,
     #[doc = " Module types"]
@@ -411,7 +433,7 @@ fn bindgen_test_layout_ModuleInfo() {
 #[derive(Debug)]
 pub struct DispatchTable {
     #[doc = " Function signatures"]
-    pub signatures: *const FunctionSignature,
+    pub prototypes: *const FunctionPrototype,
     #[doc = " Function pointers"]
     pub fn_ptrs: *mut *const ::std::os::raw::c_void,
     #[doc = " Number of functions"]
@@ -430,13 +452,13 @@ fn bindgen_test_layout_DispatchTable() {
         concat!("Alignment of ", stringify!(DispatchTable))
     );
     assert_eq!(
-        unsafe { &(*(::std::ptr::null::<DispatchTable>())).signatures as *const _ as usize },
+        unsafe { &(*(::std::ptr::null::<DispatchTable>())).prototypes as *const _ as usize },
         0usize,
         concat!(
             "Offset of field: ",
             stringify!(DispatchTable),
             "::",
-            stringify!(signatures)
+            stringify!(prototypes)
         )
     );
     assert_eq!(