Ejemplo n.º 1
0
        public Obj GetDebugValue(string name)
        {
            int classcope;
            int block = runtimeCore.GetCurrentBlockId();

            RuntimeMemory rmem = MirrorTarget.rmem;
            SymbolNode    symbol;
            int           index = GetSymbolIndex(name, out classcope, ref block, out symbol);
            StackValue    sv;

            if (symbol.functionIndex == -1 && classcope != Constants.kInvalidIndex)
            {
                sv = rmem.GetMemberData(index, classcope, runtimeCore.DSExecutable);
            }
            else
            {
                sv = rmem.GetSymbolValue(symbol);
            }

            if (sv.IsInvalid)
            {
                throw new UninitializedVariableException {
                          Name = name
                }
            }
            ;

            return(Unpack(sv));
        }
        public ExecutionMirror Execute(string code)
        {
            bool ssastate     = Core.Options.GenerateSSA;
            bool ssastateExec = Core.Options.ExecuteSSA;

            runtimeCore.Options.RunMode = ProtoCore.DSASM.InterpreterMode.kExpressionInterpreter;

            runtimeCore.Options.GenerateSSA = false;
            runtimeCore.Options.ExecuteSSA  = false;

            code = string.Format("{0} = {1};", Constants.kWatchResultVar, code);

            // TODO Jun: Move this initaliztion of the exe into a unified function
            //Core.ExprInterpreterExe = new Executable();

            int blockId = ProtoCore.DSASM.Constants.kInvalidIndex;

            runtimeCore.RuntimeMemory.AlignStackForExprInterpreter();

            //Initialize the watch stack and watchBaseOffset
            //The watchBaseOffset is used to indexing the watch variables and related temporary variables
            Core.watchBaseOffset = 0;
            runtimeCore.watchStack.Clear();

            bool succeeded = Compile(code, runtimeCore.GetCurrentBlockId(), out blockId);

            //Clear the warnings and errors so they will not continue impact the next compilation.
            Core.BuildStatus.ClearErrors();
            Core.BuildStatus.ClearWarnings();

            for (int i = 0; i < Core.watchBaseOffset; ++i)
            {
                runtimeCore.watchStack.Add(StackValue.Null);
            }

            //Record the old function call depth
            //Fix IDE-523: part of error for watching non-existing member
            int oldFunctionCallDepth = runtimeCore.FunctionCallDepth;

            //Record the old start PC
            int oldStartPC = Core.watchStartPC;

            if (succeeded)
            {
                //a2. Record the old start PC for restore instructions
                Core.watchStartPC = runtimeCore.ExprInterpreterExe.instrStreamList[blockId].instrList.Count;
                Core.GenerateExprExeInstructions(blockId);

                //a3. Record the old running block
                int restoreBlock = runtimeCore.RunningBlock;
                runtimeCore.RunningBlock = blockId;

                //a4. Record the old debug entry PC and stack size of FileFepChosen
                int oldDebugEntryPC = runtimeCore.DebugProps.DebugEntryPC;

                //a5. Record the frame pointer for referencing to thisPtr
                runtimeCore.watchFramePointer = runtimeCore.RuntimeMemory.FramePointer;

                // The "Core.Bounce" below is gonna adjust the "FramePointer"
                // based on the current size of "Core.Rmem.Stack". All that is
                // good except that "Bounce" does not restore the previous value
                // of frame pointer after "bouncing back". Here we make a backup
                // of it and restore it right after the "Core.Bounce" call.
                //
                //Core.Executives[Core.CodeBlockList[Core.RunningBlock].language].
                try
                {
                    ProtoCore.DSASM.StackFrame stackFrame = null;
                    int locals = 0;

                    StackValue sv = runtimeCore.CurrentExecutive.CurrentDSASMExec.Bounce(blockId, Core.watchStartPC, stackFrame, locals);

                    // As Core.InterpreterProps stack member is pushed to every time the Expression Interpreter begins executing
                    // it needs to be popped off at the end for stack alignment - pratapa
                    runtimeCore.InterpreterProps.Pop();
                }
                catch
                { }

                //r5. Restore frame pointer.
                runtimeCore.RuntimeMemory.FramePointer = runtimeCore.watchFramePointer;

                //r4. Restore the debug entry PC and stack size of FileFepChosen
                runtimeCore.DebugProps.DebugEntryPC = oldDebugEntryPC;

                //r3. Restore the running block
                runtimeCore.RunningBlock = restoreBlock;

                //r2. Restore the instructions in Core.ExprInterpreterExe
                int from  = Core.watchStartPC;
                int elems = runtimeCore.ExprInterpreterExe.iStreamCanvas.instrList.Count;
                runtimeCore.ExprInterpreterExe.instrStreamList[blockId].instrList.RemoveRange(from, elems);

                //Restore the start PC
                Core.watchStartPC = oldStartPC;

                //Restore the function call depth
                //Fix IDE-523: part of error for watching non-existing member
                runtimeCore.FunctionCallDepth = oldFunctionCallDepth;


                //Clear the watchSymbolList
                foreach (SymbolNode node in runtimeCore.WatchSymbolList)
                {
                    if (ProtoCore.DSASM.Constants.kInvalidIndex == node.classScope)
                    {
                        Core.DSExecutable.runtimeSymbols[node.runtimeTableIndex].Remove(node);
                    }
                    else
                    {
                        Core.ClassTable.ClassNodes[node.classScope].symbols.Remove(node);
                    }
                }
            }
            else
            {
                //Restore the start PC
                Core.watchStartPC = oldStartPC;

                //Restore the function call depth
                //Fix IDE-523: part of error for watching non-existing member
                runtimeCore.FunctionCallDepth = oldFunctionCallDepth;

                //Clear the watchSymbolList
                foreach (SymbolNode node in runtimeCore.WatchSymbolList)
                {
                    if (ProtoCore.DSASM.Constants.kInvalidIndex == node.classScope)
                    {
                        Core.DSExecutable.runtimeSymbols[node.runtimeTableIndex].Remove(node);
                    }
                    else
                    {
                        Core.ClassTable.ClassNodes[node.classScope].symbols.Remove(node);
                    }
                }

                // TODO: investigate why additional elements are added to the stack.
                runtimeCore.RuntimeMemory.RestoreStackForExprInterpreter();

                throw new ProtoCore.Exceptions.CompileErrorsOccured();
            }

            // TODO: investigate why additional elements are added to the stack.
            runtimeCore.RuntimeMemory.RestoreStackForExprInterpreter();

            runtimeCore.Options.GenerateSSA = ssastate;
            runtimeCore.Options.ExecuteSSA  = ssastateExec;
            runtimeCore.Options.RunMode     = ProtoCore.DSASM.InterpreterMode.kNormal;

            return(new ExecutionMirror(runtimeCore.CurrentExecutive.CurrentDSASMExec, runtimeCore));
        }