feat: ffi.rawData

buzz-language · Jan 21, 2025 · 3586f9d · 3586f9d
1 parent 8288868
commit 3586f9d
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Showing 6 changed files with 32 additions and 1 deletion.
diff --git a/src/buzz_api.zig b/src/buzz_api.zig
@@ -1512,6 +1512,10 @@ export fn bz_foreignContainerSlice(container_value: Value, len: *usize) [*]u8 {
     return container.data.ptr;
 }
 
+export fn bz_valueIsForeignContainer(value: Value) bool {
+    return value.isObj() and value.obj().obj_type == .ForeignContainer;
+}
+
 export fn bz_newForeignContainerFromSlice(vm: *VM, type_def: Value, ptr: [*]u8, len: usize) Value {
     var container = (vm.gc.allocateObject(
         ObjForeignContainer,

diff --git a/src/lib/buzz_api.zig b/src/lib/buzz_api.zig
@@ -124,6 +124,7 @@ pub const Value = packed struct {
     pub extern fn bz_valueToString(value: Value, len: *usize) ?[*]const u8;
     pub extern fn bz_valueToCString(value: Value) ?[*:0]const u8;
     pub extern fn bz_valueToForeignContainerPtr(value: Value) [*]u8;
+    pub extern fn bz_valueIsForeignContainer(value: Value) bool;
     pub extern fn bz_valueDump(value: Value, vm: *VM) void;
     pub extern fn bz_valueEqual(self: Value, other: Value) Value;
     pub extern fn bz_valueIs(self: Value, type_def: Value) Value;

diff --git a/src/lib/buzz_ffi.zig b/src/lib/buzz_ffi.zig
@@ -83,3 +83,22 @@ pub export fn alignOfStruct(ctx: *api.NativeCtx) c_int {
 
     return 1;
 }
+
+pub export fn rawData(ctx: *api.NativeCtx) c_int {
+    const data = ctx.vm.bz_peek(0);
+
+    if (!data.bz_valueIsForeignContainer()) {
+        ctx.vm.pushError("ffi.ValueNotForeignContainer", null);
+
+        return -1;
+    }
+
+    var len: usize = 0;
+    const data_ptr = data.bz_foreignContainerSlice(&len);
+
+    ctx.vm.bz_push(
+        ctx.vm.bz_stringToValue(data_ptr, len),
+    );
+
+    return 1;
+}
diff --git a/src/lib/ffi.buzz b/src/lib/ffi.buzz
@@ -10,10 +10,16 @@ export object FFIZigTypeParseError {
     message: str = "Could not parse zig type",
 }
 
+export object ValueNotForeignContainer {
+    message: str = "Value is not a foreign container",
+}
+
 export extern fun alignOf(zigType: str) > int;
 
 export extern fun sizeOf(zigType: str) > int;
 
 export extern fun sizeOfStruct(structType: type) > int;
 
 export extern fun alignOfStruct(structType: type) > int;
+
+export extern fun rawData(data: any) > str;
diff --git a/tests/058-ffi.buzz b/tests/058-ffi.buzz
@@ -58,7 +58,7 @@ zdef("tests/utils/libforeign", `
     const Data = extern struct {
         id: i32,
         msg: [*:0]const u8,
-        value: f32,
+        value: f64,
     };
 
     fn get_data_msg(data: *Data) [*:0]const u8;

diff --git a/tests/utils/foreign.zig b/tests/utils/foreign.zig
@@ -20,6 +20,7 @@ export fn sum(values: [*]i32, len: i32) i32 {
 pub const Data = extern struct {
     id: i32,
     msg: [*:0]u8,
+    value: f64,
 };
 
 export fn get_data_msg(data: *Data) [*:0]u8 {