From a51b510e7d50b8a65e1900f2aeda023c38833e5d Mon Sep 17 00:00:00 2001
From: Kelly Kinkade <kelly.lynn.martin@gmail.com>
Date: Mon, 3 Aug 2026 16:14:13 -0500
Subject: [PATCH] add codegen support for `stl-fs-filetime`

This adds codegen support for `stl-fs-filetime`, representing `std::filesystem::file_time_type`
---
 SYNTAX.rst          | 9 ++++++++-
 StructFields.pm     | 1 +
 changelog.txt       | 1 +
 data-definition.xsd | 7 +++++++
 lower-1.xslt        | 1 +
 5 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/SYNTAX.rst b/SYNTAX.rst
index f9b0c676ec..8258bc5aab 100644
--- a/SYNTAX.rst
+++ b/SYNTAX.rst
@@ -248,7 +248,14 @@ Primitive fields can be classified as following:
     abstractly represent a path to a filesystem object in an
     architecture-independent manner.
 
-6)  File Stream::
+6)  Filesystem Time::
+
+        <stl-fs-filetime name='id'/>
+
+    This tag correspond to ``std::filesystem::file_time_type`` and is used to represent
+    a filesystem time value in an architecture-independent manner.
+
+7)  File Stream::
 
         <stl-fstream name='id'/>
 
diff --git a/StructFields.pm b/StructFields.pm
index 720cd5c6fb..e2ae40d7fe 100644
--- a/StructFields.pm
+++ b/StructFields.pm
@@ -128,6 +128,7 @@ my %custom_primitive_handlers = (
     'stl-condition-variable' => sub { header_ref("condition_variable"); return "std::condition_variable"; },
     'stl-future' => sub { header_ref("future"); return "std::future<void>"; },
     'stl-fs-path' => sub { header_ref("filesystem"); return "std::filesystem::path"; },
+    'stl-fs-filetime' => sub { header_ref("filesystem"); return "std::filesystem::file_time_type"; },
 );
 
 my %custom_primitive_inits = (
diff --git a/changelog.txt b/changelog.txt
index 651525f02e..1a11236581 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -19,6 +19,7 @@ Template for new versions:
 # Future
 
 ## Structures
+- added support for ``stl-fs-filetime`` representing ``std::filesystem::file_time_type``
 
 # 53.15-r3
 
diff --git a/data-definition.xsd b/data-definition.xsd
index ff3cb4d171..5ae1ac9396 100644
--- a/data-definition.xsd
+++ b/data-definition.xsd
@@ -229,6 +229,7 @@
             <xs:element name="stl-function" type="StlFunctionField" />
             <xs:element name="stl-variant" type="StlVariantField" />
             <xs:element name="stl-fs-path" type="StlPathField" />
+            <xs:element name="stl-fs-filetime" type="StlFileTimeField" />
             <xs:element name="df-linked-list" type="DfLinkedListField" />
             <xs:element name="df-array" type="DfArrayField" />
             <xs:element name="df-flagarray" type="DfFlagArrayField" />
@@ -387,6 +388,12 @@
             </xs:extension>
         </xs:complexContent>
     </xs:complexType>
+    <xs:complexType name="StlFileTimeField">
+        <xs:complexContent>
+            <xs:extension base="SimpleFieldType">
+            </xs:extension>
+        </xs:complexContent>
+    </xs:complexType>
     <xs:complexType name="StlVectorField">
         <xs:complexContent>
             <xs:extension base="ContainerFieldType">
diff --git a/lower-1.xslt b/lower-1.xslt
index acec602250..a88ae58a02 100644
--- a/lower-1.xslt
+++ b/lower-1.xslt
@@ -224,6 +224,7 @@ Error: field <xsl:value-of select='$enum-key'/> corresponds to an enum value of
         <prim-type ld:meta='primitive' ld:subtype='stl-condition-variable'/>
         <prim-type ld:meta='primitive' ld:subtype='stl-future'/>
         <prim-type ld:meta='primitive' ld:subtype='stl-fs-path'/>
+        <prim-type ld:meta='primitive' ld:subtype='stl-fs-filetime'/>
     </ld:primitive-types>
 
     <xsl:template match='int8_t|uint8_t|int16_t|uint16_t|int32_t|uint32_t|int64_t|uint64_t|size_t|ssize_t|long|ulong|bool|flag-bit|s-float|d-float|padding|static-string|ptr-string|stl-string|stl-fstream|stl-mutex|stl-condition-variable|stl-future|stl-fs-path'>