From acac0684d0eb13792cbb8b9bde6f077642dcc640 Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@trolltech.com>
Date: Tue, 28 Jul 2009 11:50:57 +0200
Subject: Fix tst_QScriptEngine::nestedEvaluate

The 'this' value was not correctly set when evaluating

Reviewed-by: Kent Hansen
---
 src/script/api/qscriptcontext.cpp |  8 +-------
 src/script/api/qscriptengine.cpp  | 17 ++++++++++++++++-
 src/script/api/qscriptengine_p.h  |  1 +
 3 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/src/script/api/qscriptcontext.cpp b/src/script/api/qscriptcontext.cpp
index 8d4fe18..c286a70 100644
--- a/src/script/api/qscriptcontext.cpp
+++ b/src/script/api/qscriptcontext.cpp
@@ -452,13 +452,7 @@ void QScriptContext::setActivationObject(const QScriptValue &activation)
 QScriptValue QScriptContext::thisObject() const
 {
     Q_D(const QScriptContext);
-    JSC::JSValue result;
-    if (d->frame->codeBlock() != 0) {
-        result = d->frame->thisValue();
-    } else {
-        JSC::Register* thisRegister = d->frame->registers() - JSC::RegisterFile::CallFrameHeaderSize - d->frame->argumentCount();
-        result = thisRegister->jsValue();
-    }
+    JSC::JSValue result = d->engine->thisForContext(d->frame);
     if (!result || result.isNull())
         result = d->frame->globalThisValue();
     return d->engine->scriptValueFromJSCValue(result);
diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp
index a3686ed..61bf271 100644
--- a/src/script/api/qscriptengine.cpp
+++ b/src/script/api/qscriptengine.cpp
@@ -1152,6 +1152,20 @@ JSC::JSValue QScriptEnginePrivate::toUsableValue(JSC::JSValue value)
         originalGlobalObjectProxy = new (currentFrame)QScript::OriginalGlobalObjectProxy(scriptObjectStructure, originalGlobalObject());
     return originalGlobalObjectProxy;
 }
+/*!
+    \internal
+    Return the 'this' value for a given context
+    The result may be null for the global context
+*/
+JSC::JSValue QScriptEnginePrivate::thisForContext(JSC::ExecState *frame)
+{
+    if (frame->codeBlock() != 0) {
+        return frame->thisValue();
+    } else {
+        JSC::Register* thisRegister = frame->registers() - JSC::RegisterFile::CallFrameHeaderSize - frame->argumentCount();
+        return thisRegister->jsValue();
+    }
+}
 
 void QScriptEnginePrivate::mark()
 {
@@ -2182,7 +2196,8 @@ QScriptValue QScriptEngine::evaluate(const QString &program, const QString &file
     JSC::ScopeChain scopeChain = JSC::ScopeChain(exec->scopeChain());
     JSC::DynamicGlobalObjectScope dynamicGlobalObjectScope(exec, exec->scopeChain()->globalObject());
     JSC::Completion comp = JSC::evaluate(exec, scopeChain,
-                                         JSC::makeSource(jscProgram, jscFileName, lineNumber));
+                                         JSC::makeSource(jscProgram, jscFileName, lineNumber),
+                                         d->thisForContext(exec));
     if ((comp.complType() == JSC::Normal) || (comp.complType() == JSC::ReturnValue)) {
         Q_ASSERT(!exec->hadException());
         return d->scriptValueFromJSCValue(comp.value());
diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h
index c0f5e13..151ddb2 100644
--- a/src/script/api/qscriptengine_p.h
+++ b/src/script/api/qscriptengine_p.h
@@ -117,6 +117,7 @@ public:
     void setGlobalObject(JSC::JSObject *object);
     JSC::ExecState *globalExec() const;
     JSC::JSValue toUsableValue(JSC::JSValue value);
+    static JSC::JSValue thisForContext(JSC::ExecState *frame);
 
     void mark();
     bool isCollecting() const;
-- 
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