1 files changed, 101 insertions, 0 deletions
diff --git a/intl/icu_capi/src/locale_directionality.rs b/intl/icu_capi/src/locale_directionality.rs
new file mode 100644
index 0000000000..2ec83caff2
--- /dev/null
+++ b/intl/icu_capi/src/locale_directionality.rs
@@ -0,0 +1,101 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+#[diplomat::bridge]
+pub mod ffi {
+    use crate::{
+        errors::ffi::ICU4XError,
+        locale::ffi::ICU4XLocale,
+        locid_transform::ffi::ICU4XLocaleExpander,
+        provider::{ffi::ICU4XDataProvider, ICU4XDataProviderInner},
+    };
+    use alloc::boxed::Box;
+    use icu_locid_transform::{Direction, LocaleDirectionality};
+
+    #[diplomat::rust_link(icu::locid_transform::Direction, Enum)]
+    pub enum ICU4XLocaleDirection {
+        LeftToRight,
+        RightToLeft,
+        Unknown,
+    }
+
+    #[diplomat::opaque]
+    #[diplomat::rust_link(icu::locid_transform::LocaleDirectionality, Struct)]
+    pub struct ICU4XLocaleDirectionality(pub LocaleDirectionality);
+
+    impl ICU4XLocaleDirectionality {
+        /// Construct a new ICU4XLocaleDirectionality instance
+        #[diplomat::rust_link(icu::locid_transform::LocaleDirectionality::new, FnInStruct)]
+        pub fn create(
+            provider: &ICU4XDataProvider,
+        ) -> Result<Box<ICU4XLocaleDirectionality>, ICU4XError> {
+            Ok(Box::new(ICU4XLocaleDirectionality(call_constructor!(
+                LocaleDirectionality::new [r => Ok(r)],
+                LocaleDirectionality::try_new_with_any_provider,
+                LocaleDirectionality::try_new_with_buffer_provider,
+                provider,
+            )?)))
+        }
+
+        /// Construct a new ICU4XLocaleDirectionality instance with a custom expander
+        #[diplomat::rust_link(
+            icu::locid_transform::LocaleDirectionality::new_with_expander,
+            FnInStruct
+        )]
+        pub fn create_with_expander(
+            provider: &ICU4XDataProvider,
+            expander: &ICU4XLocaleExpander,
+        ) -> Result<Box<ICU4XLocaleDirectionality>, ICU4XError> {
+            #[allow(unused_imports)]
+            use icu_provider::prelude::*;
+            Ok(Box::new(ICU4XLocaleDirectionality(match &provider.0 {
+                ICU4XDataProviderInner::Destroyed => Err(icu_provider::DataError::custom(
+                    "This provider has been destroyed",
+                ))?,
+                ICU4XDataProviderInner::Empty => {
+                    LocaleDirectionality::try_new_with_expander_unstable(
+                        &icu_provider_adapters::empty::EmptyDataProvider::new(),
+                        expander.0.clone(),
+                    )?
+                }
+                #[cfg(feature = "buffer_provider")]
+                ICU4XDataProviderInner::Buffer(buffer_provider) => {
+                    LocaleDirectionality::try_new_with_expander_unstable(
+                        &buffer_provider.as_deserializing(),
+                        expander.0.clone(),
+                    )?
+                }
+                #[cfg(feature = "compiled_data")]
+                ICU4XDataProviderInner::Compiled => {
+                    LocaleDirectionality::new_with_expander(expander.0.clone())
+                }
+            })))
+        }
+
+        #[diplomat::rust_link(icu::locid_transform::LocaleDirectionality::get, FnInStruct)]
+        pub fn get(&self, locale: &ICU4XLocale) -> ICU4XLocaleDirection {
+            match self.0.get(&locale.0) {
+                Some(Direction::LeftToRight) => ICU4XLocaleDirection::LeftToRight,
+                Some(Direction::RightToLeft) => ICU4XLocaleDirection::RightToLeft,
+                _ => ICU4XLocaleDirection::Unknown,
+            }
+        }
+
+        #[diplomat::rust_link(
+            icu::locid_transform::LocaleDirectionality::is_left_to_right,
+            FnInStruct
+        )]
+        pub fn is_left_to_right(&self, locale: &ICU4XLocale) -> bool {
+            self.0.is_left_to_right(&locale.0)
+        }
+
+        #[diplomat::rust_link(
+            icu::locid_transform::LocaleDirectionality::is_right_to_left,
+            FnInStruct
+        )]
+        pub fn is_right_to_left(&self, locale: &ICU4XLocale) -> bool {
+            self.0.is_right_to_left(&locale.0)
+        }
+    }
+}