/// <summary>Create function compiled from Function(...) constructor.</summary>
/// <remarks>Create function compiled from Function(...) constructor.</remarks>
internal static Rhino.InterpretedFunction CreateFunction(Context cx, Scriptable scope, InterpreterData idata, object staticSecurityDomain)
{
Rhino.InterpretedFunction f;
f = new Rhino.InterpretedFunction(idata, staticSecurityDomain);
f.InitScriptFunction(cx, scope);
return f;
}
internal static object Interpret(InterpretedFunction ifun, Context cx, Scriptable scope, Scriptable thisObj, object[] args)
{
if (!ScriptRuntime.HasTopCall(cx))
{
Kit.CodeBug();
}
if (cx.interpreterSecurityDomain != ifun.securityDomain)
{
object savedDomain = cx.interpreterSecurityDomain;
cx.interpreterSecurityDomain = ifun.securityDomain;
try
{
return ifun.securityController.CallWithDomain(ifun.securityDomain, cx, ifun, scope, thisObj, args);
}
finally
{
cx.interpreterSecurityDomain = savedDomain;
}
}
Interpreter.CallFrame frame = new Interpreter.CallFrame();
InitFrame(cx, scope, thisObj, args, null, 0, args.Length, ifun, null, frame);
frame.isContinuationsTopFrame = cx.isContinuationsTopCall;
cx.isContinuationsTopCall = false;
return InterpretLoop(cx, frame, null);
}
private static void InitFunction(Context cx, Scriptable scope, InterpretedFunction parent, int index)
{
InterpretedFunction fn;
fn = InterpretedFunction.CreateFunction(cx, scope, parent, index);
ScriptRuntime.InitFunction(cx, scope, fn, fn.idata.itsFunctionType, parent.idata.evalScriptFlag);
}
private static void InitFrame(Context cx, Scriptable callerScope, Scriptable thisObj, object[] args, double[] argsDbl, int argShift, int argCount, InterpretedFunction fnOrScript, Interpreter.CallFrame parentFrame, Interpreter.CallFrame frame)
{
InterpreterData idata = fnOrScript.idata;
bool useActivation = idata.itsNeedsActivation;
DebugFrame debuggerFrame = null;
if (cx.debugger != null)
{
debuggerFrame = cx.debugger.GetFrame(cx, idata);
if (debuggerFrame != null)
{
useActivation = true;
}
}
if (useActivation)
{
// Copy args to new array to pass to enterActivationFunction
// or debuggerFrame.onEnter
if (argsDbl != null)
{
args = GetArgsArray(args, argsDbl, argShift, argCount);
}
argShift = 0;
argsDbl = null;
}
Scriptable scope;
if (idata.itsFunctionType != 0)
{
scope = fnOrScript.GetParentScope();
if (useActivation)
{
scope = ScriptRuntime.CreateFunctionActivation(fnOrScript, scope, args);
}
}
else
{
scope = callerScope;
ScriptRuntime.InitScript(fnOrScript, thisObj, cx, scope, fnOrScript.idata.evalScriptFlag);
}
if (idata.itsNestedFunctions != null)
{
if (idata.itsFunctionType != 0 && !idata.itsNeedsActivation)
{
Kit.CodeBug();
}
for (int i = 0; i < idata.itsNestedFunctions.Length; i++)
{
InterpreterData fdata = idata.itsNestedFunctions[i];
if (fdata.itsFunctionType == FunctionNode.FUNCTION_STATEMENT)
{
InitFunction(cx, scope, fnOrScript, i);
}
}
}
// Initialize args, vars, locals and stack
int emptyStackTop = idata.itsMaxVars + idata.itsMaxLocals - 1;
int maxFrameArray = idata.itsMaxFrameArray;
if (maxFrameArray != emptyStackTop + idata.itsMaxStack + 1)
{
Kit.CodeBug();
}
object[] stack;
int[] stackAttributes;
double[] sDbl;
bool stackReuse;
if (frame.stack != null && maxFrameArray <= frame.stack.Length)
{
// Reuse stacks from old frame
stackReuse = true;
stack = frame.stack;
stackAttributes = frame.stackAttributes;
sDbl = frame.sDbl;
}
else
{
stackReuse = false;
stack = new object[maxFrameArray];
stackAttributes = new int[maxFrameArray];
sDbl = new double[maxFrameArray];
}
int varCount = idata.GetParamAndVarCount();
for (int i_1 = 0; i_1 < varCount; i_1++)
{
if (idata.GetParamOrVarConst(i_1))
{
stackAttributes[i_1] = ScriptableObject.CONST;
}
}
int definedArgs = idata.argCount;
if (definedArgs > argCount)
{
definedArgs = argCount;
}
// Fill the frame structure
frame.parentFrame = parentFrame;
frame.frameIndex = (parentFrame == null) ? 0 : parentFrame.frameIndex + 1;
if (frame.frameIndex > cx.GetMaximumInterpreterStackDepth())
{
throw Context.ReportRuntimeError("Exceeded maximum stack depth");
}
frame.frozen = false;
frame.fnOrScript = fnOrScript;
frame.idata = idata;
frame.stack = stack;
frame.stackAttributes = stackAttributes;
frame.sDbl = sDbl;
frame.varSource = frame;
frame.localShift = idata.itsMaxVars;
frame.emptyStackTop = emptyStackTop;
frame.debuggerFrame = debuggerFrame;
frame.useActivation = useActivation;
frame.thisObj = thisObj;
// Initialize initial values of variables that change during
// interpretation.
frame.result = Undefined.instance;
frame.pc = 0;
frame.pcPrevBranch = 0;
frame.pcSourceLineStart = idata.firstLinePC;
frame.scope = scope;
frame.savedStackTop = emptyStackTop;
frame.savedCallOp = 0;
System.Array.Copy(args, argShift, stack, 0, definedArgs);
if (argsDbl != null)
{
System.Array.Copy(argsDbl, argShift, sDbl, 0, definedArgs);
}
for (int i_2 = definedArgs; i_2 != idata.itsMaxVars; ++i_2)
{
stack[i_2] = Undefined.instance;
}
if (stackReuse)
{
// Clean the stack part and space beyond stack if any
// of the old array to allow to GC objects there
for (int i = emptyStackTop + 1; i_2 != stack.Length; ++i_2)
{
stack[i_2] = null;
}
}
EnterFrame(cx, frame, args, false);
}
private static Interpreter.CallFrame InitFrameForApplyOrCall(Context cx, Interpreter.CallFrame frame, int indexReg, object[] stack, double[] sDbl, int stackTop, int op, Scriptable calleeScope, IdFunctionObject ifun, InterpretedFunction iApplyCallable)
{
Scriptable applyThis;
if (indexReg != 0)
{
object obj = stack[stackTop + 2];
if (obj == UniqueTag.DOUBLE_MARK)
{
obj = ScriptRuntime.WrapNumber(sDbl[stackTop + 2]);
}
applyThis = ScriptRuntime.ToObjectOrNull(cx, obj);
}
else
{
applyThis = null;
}
if (applyThis == null)
{
// This covers the case of args[0] == (null|undefined) as well.
applyThis = ScriptRuntime.GetTopCallScope(cx);
}
if (op == Icode_TAIL_CALL)
{
ExitFrame(cx, frame, null);
frame = frame.parentFrame;
}
else
{
frame.savedStackTop = stackTop;
frame.savedCallOp = op;
}
Interpreter.CallFrame calleeFrame = new Interpreter.CallFrame();
if (BaseFunction.IsApply(ifun))
{
object[] callArgs = indexReg < 2 ? ScriptRuntime.emptyArgs : ScriptRuntime.GetApplyArguments(cx, stack[stackTop + 3]);
InitFrame(cx, calleeScope, applyThis, callArgs, null, 0, callArgs.Length, iApplyCallable, frame, calleeFrame);
}
else
{
// Shift args left
for (int i = 1; i < indexReg; ++i)
{
stack[stackTop + 1 + i] = stack[stackTop + 2 + i];
sDbl[stackTop + 1 + i] = sDbl[stackTop + 2 + i];
}
int argCount = indexReg < 2 ? 0 : indexReg - 1;
InitFrame(cx, calleeScope, applyThis, stack, sDbl, stackTop + 2, argCount, iApplyCallable, frame, calleeFrame);
}
frame = calleeFrame;
return frame;
}
/// <summary>Call __noSuchMethod__.</summary>
/// <remarks>Call __noSuchMethod__.</remarks>
private static Interpreter.CallFrame InitFrameForNoSuchMethod(Context cx, Interpreter.CallFrame frame, int indexReg, object[] stack, double[] sDbl, int stackTop, int op, Scriptable funThisObj, Scriptable calleeScope, ScriptRuntime.NoSuchMethodShim noSuchMethodShim, InterpretedFunction ifun)
{
// create an args array from the stack
object[] argsArray = null;
// exactly like getArgsArray except that the first argument
// is the method name from the shim
int shift = stackTop + 2;
object[] elements = new object[indexReg];
for (int i = 0; i < indexReg; ++i, ++shift)
{
object val = stack[shift];
if (val == UniqueTag.DOUBLE_MARK)
{
val = ScriptRuntime.WrapNumber(sDbl[shift]);
}
elements[i] = val;
}
argsArray = new object[2];
argsArray[0] = noSuchMethodShim.methodName;
argsArray[1] = cx.NewArray(calleeScope, elements);
// exactly the same as if it's a regular InterpretedFunction
Interpreter.CallFrame callParentFrame = frame;
Interpreter.CallFrame calleeFrame = new Interpreter.CallFrame();
if (op == Icode_TAIL_CALL)
{
callParentFrame = frame.parentFrame;
ExitFrame(cx, frame, null);
}
// init the frame with the underlying method with the
// adjusted args array and shim's function
InitFrame(cx, calleeScope, funThisObj, argsArray, null, 0, 2, ifun, callParentFrame, calleeFrame);
if (op != Icode_TAIL_CALL)
{
frame.savedStackTop = stackTop;
frame.savedCallOp = op;
}
return calleeFrame;
}
/// <summary>Create function embedded in script or another function.</summary>
/// <remarks>Create function embedded in script or another function.</remarks>
internal static Rhino.InterpretedFunction CreateFunction(Context cx, Scriptable scope, Rhino.InterpretedFunction parent, int index)
{
Rhino.InterpretedFunction f = new Rhino.InterpretedFunction(parent, index);
f.InitScriptFunction(cx, scope);
return f;
}
/// <summary>Create script from compiled bytecode.</summary>
/// <remarks>Create script from compiled bytecode.</remarks>
internal static Rhino.InterpretedFunction CreateScript(InterpreterData idata, object staticSecurityDomain)
{
Rhino.InterpretedFunction f;
f = new Rhino.InterpretedFunction(idata, staticSecurityDomain);
return f;
}