public override ExitResult Run(NameContext context)
{
return new ExitResult
{
ExitMode = ExitMode.Break
};
}
public override Instance Eval(NameContext context)
{
var leftValue = LeftArg.EvalScalar(context);
var rightValue = RightArg.EvalScalar(context);
var retValue = ComputeBinary(leftValue, rightValue);
return new Instance(retValue);
}
public override Instance Eval(NameContext context)
{
var indexValue = Index.EvalScalar(context);
var arrayInst = Array.Eval(context);
var member = arrayInst.GetField(indexValue);
return member;
}
public override ExitResult Run(NameContext context)
{
if (Condition.EvalBool(context))
return Then != null ? Then.Run(context.NewChild()) : null;
else
return Else != null ? Else.Run(context.NewChild()) : null;
}
public override ExitResult Run(NameContext context)
{
if (ObjectRef is DotExpr)
{
var dot = ObjectRef as DotExpr;
dot.LeftArg.Eval(context).DeleteField(dot.MemberName);
}
else if (ObjectRef is NamedExpr)
{
var named = ObjectRef as NamedExpr;
while (context != null)
{
if (context.DeleteField(named.Name))
return null;
context = context.ParentContext;
}
}
else if (ObjectRef is IndexExpr)
{
var idx = ObjectRef as IndexExpr;
var i = idx.Index.EvalScalar(context);
idx.Array.Eval(context).DeleteField(i);
}
else
throw new Exception("invalid");
return null;
}
public override Instance Eval(NameContext context)
{
var inst = context.GetFieldUpwards(this.Name);
if (inst == null)
throw new Exception(string.Format("undefined '{0}'", this.Name));
return inst;
}
public override ExitResult Run(NameContext context)
{
var loopContext = context.NewChild();
NameContext codeContext = null;
var setInst = SetExpr.Eval(context);
var instList = setInst.GetFields();
if (instList != null)
foreach (var inst in instList)
if (Code != null)
{
loopContext.SetField(VarName, inst);
if (codeContext == null)
codeContext = loopContext.NewChild();
var result = Code.Run(codeContext);
if (result != null)
switch (result.ExitMode)
{
case ExitMode.Break: break;
case ExitMode.Return: return result;
case ExitMode.Continue: continue;
case ExitMode.Except: return result;
}
}
return null;
}
public override ExitResult Run(NameContext context)
{
return new ExitResult
{
ExitMode = ExitMode.Except,
ExitValue = Arg != null ? Arg.Eval(context) : null
};
}
public override Instance Eval(NameContext context)
{
var argValue = Arg.EvalScalar(context);
bool updateArg;
var retValue = ComputeUnary(ref argValue, out updateArg);
if (updateArg)
Arg.Update(context, new Instance(argValue));
return new Instance(retValue);
}
public Instance[] ToInstances(NameContext context)
{
if (Params == null)
return null;
var instances = new Instance[Params.Length];
for (var i = 0; i < Params.Length; i++)
instances[i] = Params[i].Eval(context);
return instances;
}
public override Instance Eval(NameContext context)
{
var inst = new Instance(null);
var len = Items != null ? Items.Length : 0;
for (var i = 0; i < len; i++)
inst.SetField(i, Items[i].Eval(context));
inst.SetField("length", new Instance(len));
return inst;
}
public static dynamic Run(string code, string eval, NameContext context)
{
var compiler = new JSCompiler();
var byteCode = compiler.Parse(code);
var exitState = byteCode.Run(context);
if (eval != null)
{
var a = context.GetField(eval);
return a != null ? a.Scalar : null;
}
return null;
}
public bool EvalBool(NameContext context)
{
var inst = Eval(context);
if (inst == null)
return false;
var v = inst.Scalar;
if (v == null)
return false;
if (v is string)
return v.Length > 0;
Type t = v.GetType();
if (t.IsAssignableFrom(typeof(byte)))
return v != 0;
return v;
}
public ExitResult Call(NameContext context, Instance owner, Instance[] args)
{
if (NativeCode != null)
return new ExitResult
{
ExitMode = Models.ExitMode.Normal,
ExitValue = NativeCode(owner, args)
};
// nesse callContext serao guardados os parametros e o simbolo this=owner
var callContext = context.NewChild();
if (Params != null)
for (var i = 0; i < Params.Length; i++)
callContext.SetField(Params[i], args != null && i < args.Length ? args[i] : null);
if (owner != null)
callContext.SetField("this", owner);
return Code.Run(callContext);
}
public override ExitResult Run(NameContext context)
{
var result = Code.Run(context.NewChild());
if (result != null && result.ExitMode == ExitMode.Except)
if (Catch != null)
{
var catchResult = Catch.Run(context.NewChild());
if (catchResult != null && catchResult.ExitMode != ExitMode.Normal)
return catchResult;
result = null;
}
if (Finally != null)
{
var finalResult = Finally.Run(context.NewChild());
if (finalResult != null && finalResult.ExitMode != ExitMode.Normal)
return finalResult;
}
return result;
}
public override ExitResult Run(NameContext context)
{
NameContext codeContext = null;
while (Condition.EvalBool(context))
if (Code != null)
{
if (codeContext == null)
codeContext = context.NewChild();
var result = Code.Run(codeContext);
if (result != null)
switch (result.ExitMode)
{
case ExitMode.Break: break;
case ExitMode.Return: return result;
case ExitMode.Continue: continue;
case ExitMode.Except: return result;
}
}
return null;
}
public override Instance Eval(NameContext context)
{
Instance[] args = null;
ExprPiece funcExpr;
if (Creator is ParamsExpr)
{
var paramExpr = Creator as ParamsExpr;
if (paramExpr.Params != null)
{
args = new Instance[paramExpr.Params.Length];
for (var i = 0; i < paramExpr.Params.Length; i++)
args[i] = paramExpr.Params[i].Eval(context);
}
funcExpr = paramExpr.FuncExpr;
}
else
funcExpr = Creator;
var funcEval = funcExpr.Eval(context);
if (funcEval.Prototype != null)
return funcEval.Prototype.New(args);
throw new Exception("no constructor");
}
static void Clock()
{
CodePiece c = null;
var p = new JSCompiler();
Thread.Sleep(1000);
var h0 = DateTime.Now;
for (int i = 0; i < 90; i++)
c = p.Parse("1+1");
var h1 = DateTime.Now;
System.Console.WriteLine("compiled 90 times in: " + (int)((h1 - h0).TotalMilliseconds) + "ms");
var ctx = new NameContext();
var hh0 = DateTime.Now;
for (int i = 0; i < 50000; i++)
c.Run(ctx);
var hh1 = DateTime.Now;
System.Console.WriteLine("ran 50000 times in: " + (int)((hh1 - hh0).TotalMilliseconds) + "ms");
System.Console.ReadLine();
}
public override Instance Eval(NameContext context)
{
// se for uma expressao no formato obj.proc(), o obj serah o "this" no contexto
Instance ownerInst, funcInst;
if (FuncExpr is DotExpr)
{
var dotExpr = FuncExpr as DotExpr;
dotExpr.GetMethod(context, out ownerInst, out funcInst);
}
else
{
ownerInst = null;
funcInst = FuncExpr.Eval(context);
}
var args = ToInstances(context);
if (funcInst.Prototype != null)
{
var ret = funcInst.Prototype.Run(ownerInst, args);
return ret != null ? ret.ExitValue : null;
}
throw new Exception("no method");
}
public override ExitResult Run(NameContext context)
{
var switchContext = context.NewChild();
var argInst = Arg.Eval(switchContext);
var found = false;
foreach (var someCase in Cases)
if (someCase.Match(switchContext, argInst))
{
found = true;
var caseResult = someCase.Run(switchContext);
if (caseResult != null)
switch (caseResult.ExitMode)
{
case ExitMode.Break: return null;
case ExitMode.Return: return caseResult;
case ExitMode.Continue: return caseResult;
case ExitMode.Except: return caseResult;
}
}
if (!found && Default != null)
return Default.Run(switchContext);
return null;
}
public override ExitResult Run(NameContext context)
{
if (Codes == null || Codes.Count == 0)
return null;
return Codes.Select(code => code.Run(context)).FirstOrDefault(result => result != null && result.ExitMode != ExitMode.Normal);
}
public override Instance Eval(NameContext context)
{
return Instance.DefineType(this.Function, context);
}
public abstract ExitResult Run(NameContext context);
public override void Update(NameContext context, Instance inst)
{
var indexValue = Index.EvalScalar(context);
var arrayInst = Array.Eval(context);
arrayInst.SetField(indexValue, inst);
}
public override Instance Eval(NameContext context)
{
var obj = (object)Expr.EvalScalar(context);
return new Instance(obj.GetType());
}
public override ExitResult Run(NameContext context)
{
Arg.Eval(context);
return null;
}
public override Instance Eval(NameContext context)
{
return null;/// base.Eval(context);///TODO
}
public override ExitResult Run(NameContext context)
{
context.SetField(this.Name, Value != null ? Value.Eval(context) : null);
return null;
}
public override void Update(NameContext context, Instance inst)
{
context.SetFieldUpwards(this.Name, inst);
}
public override ExitResult Run(NameContext context)
{
context.SetField(this.Name, Instance.DefineType(this, context));
return null;
}