From 7b9378be43ac244baefb03bd7ab34ae882d3c1f1 Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Tue, 25 Jul 2023 14:21:49 -0400
Subject: Tests/RunCMake/property_init: add a function to parse property tables

The tables will be triples of property / value / alias value. Parsing is
a bit tricky, but is easier when `foreach (IN ZIP_LISTS)` with the
values in their distinct list.
---
 Tests/RunCMake/property_init/util.cmake | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Tests/RunCMake/property_init/util.cmake b/Tests/RunCMake/property_init/util.cmake
index 52d0961..41a200a 100644
--- a/Tests/RunCMake/property_init/util.cmake
+++ b/Tests/RunCMake/property_init/util.cmake
@@ -22,3 +22,32 @@ function (check_property target property expected)
       "Target '${target}' should have '${property}' set to '${expected}', but is not set at all")
   endif ()
 endfunction ()
+
+function (prepare_properties table output_properties output_expected output_alias)
+  set(_properties)
+  set(_expected)
+  set(_alias)
+
+  set(variable "_properties")
+  foreach (item IN LISTS "${table}")
+    list(APPEND "${variable}" "${item}")
+    if (variable STREQUAL "_properties")
+      set(variable "_expected")
+    elseif (variable STREQUAL "_expected")
+      set(variable "_alias")
+    elseif (variable STREQUAL "_alias")
+      set(variable "_properties")
+    else ()
+      message(FATAL_ERROR
+        "Failed to track property table parsing")
+    endif ()
+  endforeach ()
+  if (NOT variable STREQUAL "_properties")
+    message(FATAL_ERROR
+      "Table does not have a multiple of 3 items")
+  endif ()
+
+  set("${output_properties}" "${_properties}" PARENT_SCOPE)
+  set("${output_expected}" "${_expected}" PARENT_SCOPE)
+  set("${output_alias}" "${_alias}" PARENT_SCOPE)
+endfunction ()
-- 
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