Merge pull request #6450 from Arthapz/optimize-module-support

(C++ modules support) Optimize module scanner

Author: waruqi

xmake/rules/c++/modules/config.lua

@@ -76,6 +76,11 @@ function main(target)
             target:add("files")
         end
 
+        local memcache = support.memcache()
+        local targets = memcache:get("targets") or {}
+        targets[target:fullname()] = {}
+        targets[target:fullname()].finished_parsing = false
+        memcache:set("targets", targets)
         -- moduleonly modules are implicitly public
         if target:is_moduleonly() then
             local sourcebatches = target:sourcebatches()

xmake/rules/c++/modules/mapper.lua

@@ -47,7 +47,6 @@ end
 function feed(target, modules, sourcefiles)
 
     local mapper = get_mapper_for(target, {invalidate = true})
-    local localcache = support.localcache()
     local deps_names = hashset.new()
     local deps_names_map = {}
     local headerunit_aliases = {}
@@ -110,8 +109,6 @@ function feed(target, modules, sourcefiles)
             mapper[name] = _module
         end
     end
-
-    localcache:save()
 end
 
 -- get a module from target mapper by name