allow input_extern_file read multiple files

csbindgen-tests/build.rs

@@ -84,6 +84,8 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     csbindgen::Builder::default()
         .input_extern_file("src/lib.rs")
+        .input_extern_file("src/others.rs")
+        //.input_extern_files(&["src/lib.rs"])
         .csharp_class_name("NativeMethods")
         .csharp_dll_name("csbindgen_tests")
         .csharp_use_function_pointer(true)

csbindgen-tests/src/lib.rs

@@ -3,6 +3,8 @@ use std::{
     ffi::{c_char, c_long, c_ulong, c_void, CString},
 };
 
+
+
 #[allow(dead_code)]
 #[allow(non_snake_case)]
 #[allow(non_camel_case_types)]
@@ -58,6 +60,14 @@ mod lz4_ffi;
 // #[allow(non_camel_case_types)]
 // mod zstd_ffi;
 
+mod others;
+pub use others::HogeMoge;
+
+#[no_mangle]
+pub extern "C" fn other_1(hoge: HogeMoge){
+    println!("{}", hoge);
+}
+
 #[no_mangle]
 pub extern "C" fn nest_test(
     _f: ::std::option::Option<
@@ -74,6 +84,7 @@ pub extern "C" fn nest_test(
 
 
 
+
 #[allow(non_camel_case_types)]
 pub type LONG_PTR = ::std::os::raw::c_longlong;
 #[allow(non_camel_case_types)]

csbindgen-tests/src/others.rs

@@ -0,0 +1,9 @@
+
+
+
+#[repr(i32)]
+#[derive(Debug, Copy, Clone)]
+pub enum HogeMoge{
+    X = 0,
+    Y = 1,
+}

csbindgen/src/builder.rs

@@ -13,7 +13,7 @@ pub struct Builder {
 
 pub struct BindgenOptions {
     pub input_bindgen_file: String,
-    pub input_extern_file: String,
+    pub input_extern_files: Vec<String>,
     pub method_filter: fn(method_name: String) -> bool,
     pub rust_method_type_path: String,
     pub rust_method_prefix: String,
@@ -34,7 +34,7 @@ impl Default for Builder {
         Self {
             options: BindgenOptions {
                 input_bindgen_file: "".to_string(),
-                input_extern_file: "".to_string(),
+                input_extern_files: vec![],
                 method_filter: |x| !x.starts_with('_'),
                 rust_method_type_path: "".to_string(),
                 rust_method_prefix: "csbindgen_".to_string(),
@@ -47,7 +47,7 @@ impl Default for Builder {
                 csharp_class_accessibility: "internal".to_string(),
                 csharp_if_symbol: "".to_string(),
                 csharp_if_dll_name: "".to_string(),
-                csharp_use_function_pointer: true
+                csharp_use_function_pointer: true,
             },
         }
     }
@@ -64,9 +64,11 @@ impl Builder {
         self
     }
 
-    /// Change an input .rs file for collect extern methods to C# binding.
+    /// Add an input .rs file for collect extern methods to C# binding.
     pub fn input_extern_file<T: Into<String>>(mut self, input_extern_file: T) -> Builder {
-        self.options.input_extern_file = input_extern_file.into();
+        self.options
+            .input_extern_files
+            .push(input_extern_file.into());
         self
     }
 
@@ -137,7 +139,10 @@ impl Builder {
 
     /// configure C# class accessibility, default is internal
     /// `{csharp_class_accessibility} static unsafe partial class NativeMethods`
-    pub fn csharp_class_accessibility<T: Into<String>>(mut self, csharp_class_accessibility: T) -> Builder {
+    pub fn csharp_class_accessibility<T: Into<String>>(
+        mut self,
+        csharp_class_accessibility: T,
+    ) -> Builder {
         self.options.csharp_class_accessibility = csharp_class_accessibility.into();
         self
     }
@@ -168,7 +173,7 @@ impl Builder {
             csharp_file.flush()?;
         }
 
-        if !self.options.input_extern_file.is_empty() {
+        if !self.options.input_extern_files.is_empty() {
             let (_, csharp) = generate(GenerateKind::InputExtern, &self.options)?;
 
             let mut csharp_file = make_file(csharp_output_path.as_ref())?;
@@ -199,7 +204,7 @@ impl Builder {
             csharp_file.flush()?;
         }
 
-        if !self.options.input_extern_file.is_empty() {
+        if !self.options.input_extern_files.is_empty() {
             let (rust, csharp) = generate(GenerateKind::InputExtern, &self.options)?;
 
             if let Some(rust) = rust {

csbindgen/src/lib.rs

@@ -14,7 +14,7 @@ use emitter::*;
 use field_map::FieldMap;
 use parser::*;
 use std::{collections::HashSet, error::Error};
-use type_meta::RustType;
+use type_meta::{ExternMethod, RustEnum, RustStruct, RustType};
 
 enum GenerateKind {
     InputBindgen,
@@ -25,21 +25,30 @@ pub(crate) fn generate(
     generate_kind: GenerateKind,
     options: &BindgenOptions,
 ) -> Result<(Option<String>, String), Box<dyn Error>> {
-    let path = match generate_kind {
-        GenerateKind::InputBindgen => &options.input_bindgen_file,
-        GenerateKind::InputExtern => &options.input_extern_file,
+    let temp_input = [options.input_bindgen_file.clone()];
+    let (paths, generate_rust) = match generate_kind {
+        GenerateKind::InputBindgen => (temp_input.as_slice(), true),
+        GenerateKind::InputExtern => (options.input_extern_files.as_slice(), false),
     };
-    let file_content = std::fs::read_to_string(path)
-        .expect(("input file not found, path:".to_string() + path).as_str());
-    let file_ast = syn::parse_file(file_content.as_str())?;
 
-    let (methods, generate_rust) = match generate_kind {
-        GenerateKind::InputBindgen => (collect_foreign_method(&file_ast, options), true),
-        GenerateKind::InputExtern => (collect_extern_method(&file_ast, options), false),
-    };
-    let aliases = collect_type_alias(&file_ast);
-    let structs = collect_struct(&file_ast);
-    let enums = collect_enum(&file_ast);
+    let mut methods: Vec<ExternMethod> = vec![];
+    let mut aliases = AliasMap::new();
+    let mut structs: Vec<RustStruct> = vec![];
+    let mut enums: Vec<RustEnum> = vec![];
+
+    for path in paths {
+        let file_content = std::fs::read_to_string(path)
+            .expect(("input file not found, path:".to_string() + path).as_str());
+        let file_ast = syn::parse_file(file_content.as_str())?;
+
+        match generate_kind {
+            GenerateKind::InputBindgen => collect_foreign_method(&file_ast, options, &mut methods),
+            GenerateKind::InputExtern => collect_extern_method(&file_ast, options, &mut methods),
+        };
+        collect_type_alias(&file_ast, &mut aliases);
+        collect_struct(&file_ast, &mut structs);
+        collect_enum(&file_ast, &mut enums);
+    }
 
     // collect using_types
     let mut using_types = HashSet::new();

csbindgen/src/parser.rs

@@ -7,9 +7,11 @@ enum FnItem {
     Item(syn::ItemFn),
 }
 
-pub fn collect_foreign_method(ast: &syn::File, options: &BindgenOptions) -> Vec<ExternMethod> {
-    let mut list: Vec<ExternMethod> = Vec::new();
-
+pub fn collect_foreign_method(
+    ast: &syn::File,
+    options: &BindgenOptions,
+    list: &mut Vec<ExternMethod>,
+) {
     for item in ast.items.iter() {
         if let Item::ForeignMod(m) = item {
             for item in m.items.iter() {
@@ -22,13 +24,13 @@ pub fn collect_foreign_method(ast: &syn::File, options: &BindgenOptions) -> Vec<
             }
         }
     }
-
-    list
 }
 
-pub fn collect_extern_method(ast: &syn::File, options: &BindgenOptions) -> Vec<ExternMethod> {
-    let mut list: Vec<ExternMethod> = Vec::new();
-
+pub fn collect_extern_method(
+    ast: &syn::File,
+    options: &BindgenOptions,
+    list: &mut Vec<ExternMethod>,
+) {
     for item in ast.items.iter() {
         if let Item::Fn(m) = item {
             if m.sig.abi.is_some() {
@@ -40,8 +42,6 @@ pub fn collect_extern_method(ast: &syn::File, options: &BindgenOptions) -> Vec<E
             }
         }
     }
-
-    list
 }
 
 fn parse_method(item: FnItem, options: &BindgenOptions) -> Option<ExternMethod> {
@@ -112,8 +112,7 @@ fn parse_method(item: FnItem, options: &BindgenOptions) -> Option<ExternMethod>
     None
 }
 
-pub fn collect_type_alias(ast: &syn::File) -> AliasMap {
-    let mut result = AliasMap::new();
+pub fn collect_type_alias(ast: &syn::File, result: &mut AliasMap) {
     for item in ast.items.iter() {
         if let Item::Type(t) = item {
             let name = t.ident.to_string();
@@ -135,14 +134,10 @@ pub fn collect_type_alias(ast: &syn::File) -> AliasMap {
             }
         }
     }
-
-    result
 }
 
-pub fn collect_struct(ast: &syn::File) -> Vec<RustStruct> {
+pub fn collect_struct(ast: &syn::File, result: &mut Vec<RustStruct>) {
     // collect union or struct
-    let mut result = Vec::new();
-
     for item in ast.items.iter() {
         if let Item::Union(t) = item {
             let struct_name = t.ident.to_string();
@@ -165,8 +160,6 @@ pub fn collect_struct(ast: &syn::File) -> Vec<RustStruct> {
             };
         }
     }
-
-    result
 }
 
 fn collect_fields(fields: &syn::FieldsNamed) -> Vec<FieldMember> {
@@ -185,9 +178,7 @@ fn collect_fields(fields: &syn::FieldsNamed) -> Vec<FieldMember> {
     result
 }
 
-pub fn collect_enum(ast: &syn::File) -> Vec<RustEnum> {
-    let mut result = Vec::new();
-
+pub fn collect_enum(ast: &syn::File, result: &mut Vec<RustEnum>) {
     for item in ast.items.iter() {
         if let Item::Enum(t) = item {
             let mut repr = None;
@@ -221,8 +212,6 @@ pub fn collect_enum(ast: &syn::File) -> Vec<RustEnum> {
             });
         }
     }
-
-    result
 }
 
 pub fn reduce_struct(

dotnet-sandbox/NativeMethods.cs

@@ -12,6 +12,9 @@ namespace CsBindgen
     {
         const string __DllName = "csbindgen_tests";
 
+        [DllImport(__DllName, EntryPoint = "other_1", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
+        public static extern void other_1(HogeMoge hoge);
+
         [DllImport(__DllName, EntryPoint = "nest_test", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
         public static extern void nest_test(delegate* unmanaged[Cdecl]<delegate* unmanaged[Cdecl]<int, void>*, int> _f);
 
@@ -173,6 +176,12 @@ namespace CsBindgen
         C = 10,
     }
 
+    internal enum HogeMoge : int
+    {
+        X = 0,
+        Y = 1,
+    }
+
 
 }