trying to resolve out of memory error during compilation on x86 platform - #425

src/dlangui/widgets/metadata.d

@@ -2,6 +2,8 @@ module dlangui.widgets.metadata;
 
 import dlangui.widgets.widget;
 
+version = GENERATE_PROPERTY_METADATA;
+
 interface WidgetMetadataDef {
     Widget create();
     /// short class name, e.g. "EditLine"
@@ -82,10 +84,12 @@ template isMarkupType(T)
 }
 
 string generatePropertiesMetadata(alias T)() {
+    version (GENERATE_PROPERTY_METADATA) {
         import std.algorithm.searching;
         import std.traits;
         import std.meta;
-    string str = "[";
+        char[] str;
+        str ~= "[";
         WidgetPropertyMetadata[] res;
         foreach(m; __traits(allMembers, T)) {
             static if (__traits(compiles, (typeof(__traits(getMember, T, m))))){
@@ -113,7 +117,10 @@ string generatePropertiesMetadata(alias T)() {
             }
         }
         str ~= "]";
-    return str;
+        return cast(string)str;
+    } else {
+        return "[]";
+    }
 }
 
 string generateMetadataClass(alias t)() {