2 files changed, 19 insertions, 2 deletions

diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp
index 7e83277..0b8a2e4 100644
--- a/src/script/api/qscriptengine.cpp
+++ b/src/script/api/qscriptengine.cpp
@@ -792,6 +792,7 @@ JSC::JSValue JSC_HOST_CALL functionQsTr(JSC::ExecState *exec, JSC::JSObject*, JS
     if ((args.size() > 2) && !args.at(2).isNumber())
         return JSC::throwError(exec, JSC::GeneralError, "qsTr(): third argument (n) must be a number");
 #ifndef QT_NO_QOBJECT
+    QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     JSC::UString context;
     // The first non-empty source URL in the call stack determines the translation context.
     {
@@ -799,7 +800,7 @@ JSC::JSValue JSC_HOST_CALL functionQsTr(JSC::ExecState *exec, JSC::JSObject*, JS
         while (frame) {
             if (frame->codeBlock() && frame->codeBlock()->source()
                 && !frame->codeBlock()->source()->url().isEmpty()) {
-                context = QFileInfo(frame->codeBlock()->source()->url()).baseName();
+                context = engine->translationContextFromUrl(frame->codeBlock()->source()->url());
                 break;
             }
             frame = frame->callerFrame()->removeHostCallFrameFlag();
@@ -921,6 +922,8 @@ QScriptEnginePrivate::QScriptEnginePrivate()
     activeAgent = 0;
     agentLineNumber = -1;
     processEventsInterval = -1;
+    cachedTranslationUrl = JSC::UString();
+    cachedTranslationContext = JSC::UString();
     JSC::setCurrentIdentifierTable(oldTable);
 }
 
@@ -3307,6 +3310,15 @@ bool QScriptEnginePrivate::hasDemarshalFunction(int type) const
     return info && (info->demarshal != 0);
 }
 
+JSC::UString QScriptEnginePrivate::translationContextFromUrl(const JSC::UString &url)
+{
+    if (url != cachedTranslationUrl) {
+        cachedTranslationContext = QFileInfo(url).baseName();
+        cachedTranslationUrl = url;
+    }
+    return cachedTranslationContext;
+}
+
 /*!
     \internal
 */
diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h
index 5c2007f..fd47208 100644
--- a/src/script/api/qscriptengine_p.h
+++ b/src/script/api/qscriptengine_p.h
@@ -63,6 +63,7 @@
 #include "RegExpObject.h"
 #include "SourceProvider.h"
 #include "Structure.h"
+#include "UString.h"
 #include "JSGlobalObject.h"
 #include "JSValue.h"
 
@@ -73,7 +74,6 @@ namespace JSC
     typedef ExecState CallFrame;
     class JSCell;
     class JSGlobalObject;
-    class UString;
 }
 
 
@@ -298,6 +298,8 @@ public:
     static inline QScriptDeclarativeClass *declarativeClass(JSC::JSValue);
     static inline QScriptDeclarativeClass::Object *declarativeObject(JSC::JSValue);
 
+    JSC::UString translationContextFromUrl(const JSC::UString &);
+
 #ifndef QT_NO_QOBJECT
     JSC::JSValue newQObject(QObject *object,
         QScriptEngine::ValueOwnership ownership = QScriptEngine::QtOwnership,
@@ -367,6 +369,9 @@ public:
     QScriptValue abortResult;
     bool inEval;
 
+    JSC::UString cachedTranslationUrl;
+    JSC::UString cachedTranslationContext;
+
     QSet<QString> importedExtensions;
     QSet<QString> extensionsBeingImported;