From 7447e9505f48633ea7536fb195c59511d3e93fe1 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Mon, 6 Jan 2025 23:46:48 +0800
Subject: fix root namespace values order

---
 xmake/core/base/interpreter.lua | 58 ++++++++++++++++++++++++++++++++---------
 1 file changed, 45 insertions(+), 13 deletions(-)

diff --git a/xmake/core/base/interpreter.lua b/xmake/core/base/interpreter.lua
index d976268c1..b3c32f280 100644
--- a/xmake/core/base/interpreter.lua
+++ b/xmake/core/base/interpreter.lua
@@ -111,8 +111,6 @@ function interpreter:_merge_root_scope(root, root_prev, override)
             root_prev[scope_kind_and_name] = scope_values
         end
     end
-
-    -- ok?
     return root_prev
 end
 
@@ -126,21 +124,55 @@ function interpreter:_fetch_root_scope(root)
         if #scope_kind_and_name == 2 then
             local scope_kind = scope_kind_and_name[1]
             local scope_name = scope_kind_and_name[2]
-            local scope_values = root[scope_kind .. "@@" .. scope_name] or {}
-            local scope_root = root[scope_kind] or {}
-            for name, values in pairs(scope_root) do
-                if not name:startswith("__override_") then
-                    if scope_root["__override_" .. name] then
-                        if scope_values[name] == nil then
-                            scope_values[name] = values
-                            scope_values["__override_" .. name] = true
+
+            -- we only fetch the root values to the target values, e.g. target@@ns1::ns2::bar"
+            -- and ignore root namespace values, e.g. target@@ns1::ns2::
+            if not scope_name:endswith("::") then
+                local scope_values = root[scope_kind .. "@@" .. scope_name] or {}
+                local namespaces = scope_name:split("::", {plain = true})
+                table.remove(namespaces)
+                table.insert(namespaces, 1, "")
+
+                -- add values in global root scope, all namespace root scopes
+                local namespace
+                local scope_rootkeys = {}
+                for idx, namespace_part in ipairs(namespaces) do
+                    local scope_rootkey = scope_kind
+                    if idx ~= 1 then
+                        if not namespace then
+                            namespace = namespace_part
+                        else
+                            namespace = namespace .. "::" .. namespace_part
+                        end
+                        scope_rootkey = scope_kind .. "@@" .. namespace .. "::"
+                    end
+                    table.insert(scope_rootkeys, scope_rootkey)
+                end
+                -- we need to add root values in head
+                --
+                -- e.g.
+                -- add root values to ns1::ns2::bar from target@@ns1::ns2::
+                -- add root values to ns1::ns2::bar from target@@ns1::
+                -- add root values to ns1::ns2::bar from target
+                --
+                for idx = #scope_rootkeys, 1, -1 do
+                    local scope_rootkey = scope_rootkeys[idx]
+                    local scope_root = root[scope_rootkey] or {}
+                    for name, values in pairs(scope_root) do
+                        if not name:startswith("__override_") then
+                            if scope_root["__override_" .. name] then
+                                if scope_values[name] == nil then
+                                    scope_values[name] = values
+                                    scope_values["__override_" .. name] = true
+                                end
+                            else
+                                scope_values[name] = table.join(values, scope_values[name] or {})
+                            end
                         end
-                    else
-                        scope_values[name] = table.join(values, scope_values[name] or {})
                     end
                 end
+                root[scope_kind .. "@@" .. scope_name] = scope_values
             end
-            root[scope_kind .. "@@" .. scope_name] = scope_values
         end
     end
 end
-- 
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