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  1. Qt
  2. QTBUG-16571

Resolve QtScript behavior that reflects implementation of old ("classic") back-end

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    • Task
    • Resolution: Won't Do
    • P4: Low
    • None
    • None
    • Qt Script
    • None

    Description

      Parts of the QtScript API and runtime expose behaviors that reflect the implementation of the old (Qt 4.5) back-end.

      It has proven difficult to implement the exact behavior on top of other JavaScript engines, such as JavaScriptCore (JSC) and V8.

      Not all of this behavior is documented, but some of it is.
      The behavior is tested in the QtScript autotests, and a lot of the cases are currently treated on an equal level with the "standard"/"officially sanctioned" behavior.

      This task collects the behaviors in question. The aim is, for each case, to document why the behavior is like that (e.g., freak accident, or is it actually well-thought-out and useful?), and assess the importance of keeping the old behavior (i.e., what is the perceived impact of changing it).

      As an overall goal, we would like the QtScript back-end integration layer to be as thin as possible; this means trying to avoid "magic" code that only serves to satisfy behavior that perhaps nobody relies (or should rely) on.

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          depends on

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-10313 [Reg] parentContext->activationObject() can return the wrong object when called from a native QtScript function

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-11012 [Reg] Crash / incorrect result when setting custom scope chain for a native context

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17612 [Reg] Dynamic C++ property overrides JS property

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6132 QScriptContext::isCalledAsConstructor() returns the wrong result for JS contexts when JIT is enabled

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6133 QScriptContextInfo::functionMetaIndex() doesn't return the correct index for overloaded slots

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6135 [Reg] 'debugger' statement returns undefined regardless of QScriptEngineAgent's return value

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6136 QRegExp <--> RegExp conversion is not fully bidirectional

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6138 [Reg] Error objects lack lineNumber and fileName properties when they're not thrown

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6139 QScriptEngine::uncaughtExceptionBacktrace() doesn't give a full backtrace

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6140 eval() do not provide callbacks for QScriptEngineAgent

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-10302 Since 4.6, QScriptValue::isFunction() returns true for regular expression objects

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-15956 [Reg] Error objects no longer provide a "stack" property

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17131 [Reg] Scope chain changes due to "with" statement isn't observable in QScriptContext

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17287 QScriptContext can return wrong arguments in callback from built-in ECMA function

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17604 [Reg] Attempting to convert an activation object to a string results in a TypeError

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17616 [Reg] JS getter that throws exception is not returned by QScriptValue::property()

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17842 [Reg] Missing line number in backtrace when function calls eval()

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6142 PostionChange QScriptEngineAgent callback

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-6187 QScriptEngineAgent callbacks are not called in rar cases

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-9737 [Reg] Changing Global Object's prototype from JavaScript is not reflected on the C++ side

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17136 [Reg] Activation object of native calls no longer has an arguments property

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17599 [Reg] QScriptClass::name() is not used in object's default string representation

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17602 [Reg] QScriptContextInfo::columnNumber() always returns -1

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17605 [Reg] Local variables implemented as getter/setter properties on the activation object no longer works

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17609 [Reg] QScriptEngineAgent::positionChange() callback always reports column number as 1

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17615 [Reg] User-range flags (QScriptValue::UserRange) not retained for getter/setter properties

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-17617 [Reg] Undeletable properties can't be deleted from C++

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed
          relates to

          Task - A task that needs to be done. QTBUG-15571 QtScript: Deprecate APIs that reflect implementation of old ("classic") back-end

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              Unassigned Unassigned
              kenthans Kent Hansen (Inactive)
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                Created:
                Updated:
                Resolved:

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