1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/rust/dwrote/src/text_analysis_source.rs b/third_party/rust/dwrote/src/text_analysis_source.rs
new file mode 100644
index 0000000000..cd575d62d2
--- /dev/null
+++ b/third_party/rust/dwrote/src/text_analysis_source.rs
@@ -0,0 +1,63 @@
+/* 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 std::borrow::Cow;
+use std::marker::PhantomData;
+use winapi::ctypes::wchar_t;
+use winapi::um::dwrite::IDWriteTextAnalysisSource;
+use wio::com::ComPtr;
+
+use super::*;
+use crate::com_helpers::Com;
+
+pub struct TextAnalysisSource<'a> {
+    native: ComPtr<IDWriteTextAnalysisSource>,
+    phantom: PhantomData<CustomTextAnalysisSourceImpl<'a>>
+}
+
+impl<'a> TextAnalysisSource<'a> {
+    /// Create a new custom TextAnalysisSource for the given text and a trait
+    /// implementation.
+    ///
+    /// Note: this method has no NumberSubsitution specified. See
+    /// `from_text_and_number_subst` if you need number substitution.
+    pub fn from_text(
+        inner: Box<dyn TextAnalysisSourceMethods + 'a>,
+        text: Cow<'a, [wchar_t]>,
+    ) -> TextAnalysisSource<'a> {
+        let native = unsafe {
+            ComPtr::from_raw(
+                CustomTextAnalysisSourceImpl::from_text_native(inner, text).into_interface()
+            )
+        };
+        TextAnalysisSource { native, phantom: PhantomData }
+    }
+
+    /// Create a new custom TextAnalysisSource for the given text and a trait
+    /// implementation.
+    ///
+    /// Note: this method only supports a single `NumberSubstitution` for the
+    /// entire string.
+    pub fn from_text_and_number_subst(
+        inner: Box<dyn TextAnalysisSourceMethods + 'a>,
+        text: Cow<'a, [wchar_t]>,
+        number_subst: NumberSubstitution,
+    ) -> TextAnalysisSource<'a> {
+        let native = unsafe {
+            ComPtr::from_raw(
+                CustomTextAnalysisSourceImpl::from_text_and_number_subst_native(
+                    inner,
+                    text,
+                    number_subst,
+                )
+                .into_interface()
+            )
+        };
+        TextAnalysisSource { native, phantom: PhantomData }
+    }
+
+    pub fn as_ptr(&self) -> *mut IDWriteTextAnalysisSource {
+        self.native.as_raw()
+    }
+}