introduce delayed resolution of aliases

this has two effects:
- using-declarations which use forward-declared classes work without
  collecting the forward declarations, as the resolution happens at a
  place where the class definition must have been encountered already
- it should be a bit faster

2 files changed, 27 insertions, 0 deletions

diff --git a/tests/auto/linguist/lupdate/testdata/good/parsecpp2/main.cpp b/tests/auto/linguist/lupdate/testdata/good/parsecpp2/main.cpp
index d720b8ff52..7ddb68fbb1 100644
--- a/tests/auto/linguist/lupdate/testdata/good/parsecpp2/main.cpp
+++ b/tests/auto/linguist/lupdate/testdata/good/parsecpp2/main.cpp
@@ -93,3 +93,22 @@ TopLevel2::Nested::foo()
 {
     TopLevel2::tr("TopLevel2");
 }
+
+
+
+namespace NameSpace {
+class ToBeUsed;
+}
+
+// using statement before class definition
+using NameSpace::ToBeUsed;
+
+class NameSpace::ToBeUsed {
+    Q_OBJECT
+    void caller();
+};
+
+void ToBeUsed::caller()
+{
+    tr("NameSpace::ToBeUsed");
+}
diff --git a/tests/auto/linguist/lupdate/testdata/good/parsecpp2/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/parsecpp2/project.ts.result
index ef5adb22c3..6f48e27021 100644
--- a/tests/auto/linguist/lupdate/testdata/good/parsecpp2/project.ts.result
+++ b/tests/auto/linguist/lupdate/testdata/good/parsecpp2/project.ts.result
@@ -2,6 +2,14 @@
 <!DOCTYPE TS>
 <TS version="2.0">
 <context>
+    <name>NameSpace::ToBeUsed</name>
+    <message>
+        <location filename="main.cpp" line="113"/>
+        <source>NameSpace::ToBeUsed</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
     <name>TopLevel</name>
     <message>
         <location filename="main.cpp" line="82"/>