implement more interfaces

1 files changed, 22 insertions, 0 deletions

diff --git a/src/root.zig b/src/root.zig
index 0e3d9e4..471267f 100644
--- a/src/root.zig
+++ b/src/root.zig
@@ -4,7 +4,29 @@ pub const Object = @import("Object.zig");
 pub const Interpreter = @import("Interpreter.zig");
 pub const Dict = @import("Dict.zig");
 pub const Str = @import("Str.zig");
+pub const Tuple = @import("Tuple.zig");
+pub const Fn = @import("function.zig").Fn;
 
 pub const Error = error {
     Exception,
+    IndexError,
+};
+
+pub const conversion = struct {
+    fn PtrFromCPtr(T: type) type {
+        const info = @typeInfo(T);
+        return *info.pointer.child;
+    }
+
+    pub fn Ptr(value: anytype) Error!PtrFromCPtr(@TypeOf(value)) {
+        if (value) |ptr| {
+            return ptr;
+        }
+
+        return error.Exception;
+    }
+
+    pub fn success(value: c_int) Error!void {
+        if (value == -1) return error.Exception;
+    }
 };