1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs
new file mode 100644
index 0000000000..86424658a3
--- /dev/null
+++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use super::CodeType;
+use crate::backend::Literal;
+use crate::interface::{Radix, Type};
+use paste::paste;
+
+fn render_literal(literal: &Literal) -> String {
+    fn typed_number(type_: &Type, num_str: String) -> String {
+        match type_ {
+            // special case Int32.
+            Type::Int32 => num_str,
+            // otherwise use constructor e.g. UInt8(x)
+            Type::Int8
+            | Type::UInt8
+            | Type::Int16
+            | Type::UInt16
+            | Type::UInt32
+            | Type::Int64
+            | Type::UInt64
+            | Type::Float32
+            | Type::Float64 =>
+            // XXX we should pass in the codetype itself.
+            {
+                format!(
+                    "{}({num_str})",
+                    super::SwiftCodeOracle.find(type_).type_label()
+                )
+            }
+            _ => panic!("Unexpected literal: {num_str} is not a number"),
+        }
+    }
+
+    match literal {
+        Literal::Boolean(v) => format!("{v}"),
+        Literal::String(s) => format!("\"{s}\""),
+        Literal::Int(i, radix, type_) => typed_number(
+            type_,
+            match radix {
+                Radix::Octal => format!("0o{i:o}"),
+                Radix::Decimal => format!("{i}"),
+                Radix::Hexadecimal => format!("{i:#x}"),
+            },
+        ),
+        Literal::UInt(i, radix, type_) => typed_number(
+            type_,
+            match radix {
+                Radix::Octal => format!("0o{i:o}"),
+                Radix::Decimal => format!("{i}"),
+                Radix::Hexadecimal => format!("{i:#x}"),
+            },
+        ),
+        Literal::Float(string, type_) => typed_number(type_, string.clone()),
+        _ => unreachable!("Literal"),
+    }
+}
+
+macro_rules! impl_code_type_for_primitive {
+    ($T:ty, $class_name:literal) => {
+        paste! {
+            #[derive(Debug)]
+            pub struct $T;
+
+            impl CodeType for $T  {
+                fn type_label(&self) -> String {
+                    $class_name.into()
+                }
+
+                fn literal(&self, literal: &Literal) -> String {
+                    render_literal(&literal)
+                }
+            }
+        }
+    };
+}
+
+impl_code_type_for_primitive!(BooleanCodeType, "Bool");
+impl_code_type_for_primitive!(StringCodeType, "String");
+impl_code_type_for_primitive!(BytesCodeType, "Data");
+impl_code_type_for_primitive!(Int8CodeType, "Int8");
+impl_code_type_for_primitive!(Int16CodeType, "Int16");
+impl_code_type_for_primitive!(Int32CodeType, "Int32");
+impl_code_type_for_primitive!(Int64CodeType, "Int64");
+impl_code_type_for_primitive!(UInt8CodeType, "UInt8");
+impl_code_type_for_primitive!(UInt16CodeType, "UInt16");
+impl_code_type_for_primitive!(UInt32CodeType, "UInt32");
+impl_code_type_for_primitive!(UInt64CodeType, "UInt64");
+impl_code_type_for_primitive!(Float32CodeType, "Float");
+impl_code_type_for_primitive!(Float64CodeType, "Double");