public void CfFieldAccessDeref()
{
Identifier id1 = new Identifier("v1", PrimitiveType.Word32, null);
Expression e = new FieldAccess(PrimitiveType.Pointer32, new Dereference(PrimitiveType.Word32, id1), "foo");
e.Accept(cf);
Assert.AreEqual("v1->foo", sw.ToString());
}
public void ReferenceFieldStaticVSInstance()
{
int iterations = 900000000;
FieldAccess fa = new FieldAccess();
Object o = null;
TestName("Static Reference Field Access Tests");
CodeTimer.Time("Read static reference field", iterations, () => o = FieldAccess.s_refType);
CodeTimer.Time("Write static reference field", iterations, () => FieldAccess.s_refType = o);
TestName("Instance Reference Field Access Tests");
CodeTimer.Time("Read instance reference field", iterations, () => o = fa.m_refType);
CodeTimer.Time("Write instance reference field", iterations, () => fa.m_refType = o);
}
public void ReadProcessData(XmlElement xmlElement, CreationContext creationContext)
{
String attributeName = xmlElement.GetProperty("attribute");
creationContext.Check(((Object) attributeName != null), "attribute is a required property in element field : " + xmlElement);
log.Debug("parsing field for attribute '" + attributeName);
creationContext.AddUnresolvedReference(this, attributeName, creationContext.ProcessBlock, "attribute", typeof (IAttribute));
this._state = creationContext.State;
String accessText = xmlElement.GetProperty("access");
creationContext.Check(((Object) accessText != null), "access is a required property in element field : " + xmlElement);
this._access = FieldAccessHelper.fromText(accessText);
}
public void ValueFieldStaticVSInstance()
{
TestName();
int iterations = 500000000;
IntPtr p = IntPtr.Zero;
FieldAccess fa = new FieldAccess();
TestName("Static Value Field Access Tests");
CodeTimer.Time("Read static value field", iterations, () => p = FieldAccess.s_valType);
CodeTimer.Time("Write static value field", iterations, () => FieldAccess.s_valType = p);
TestName("Instance Value Field Access Tests");
CodeTimer.Time("Read instance value field", iterations, () => p = fa.m_valType);
CodeTimer.Time("Write instance value field", iterations, () => fa.m_valType = p);
}
public static bool IsWritable(FieldAccess fieldAccess)
{
return((fieldAccess == FieldAccess.WRITE_ONLY) || (fieldAccess == FieldAccess.READ_WRITE) || (fieldAccess == FieldAccess.WRITE_ONLY_REQUIRED) || (fieldAccess == FieldAccess.READ_WRITE_REQUIRED));
}
public void CfScopeResolution()
{
var eq = new EquivalenceClass(new TypeVariable("Eq_2", 2));
var sr = new ScopeResolution(eq);
var e = new FieldAccess(PrimitiveType.Int32, sr, new StructureField(4, PrimitiveType.Int32, "i0004"));
e.Accept(cf);
Assert.AreEqual("Eq_2::i0004", sw.ToString());
}
public bool VisitFieldAccess(FieldAccess access) => access.Structure.Accept(this);
private void PrintResolvedFieldAccess(FieldAccess node, int indent)
{
AppendLine(indent, "FieldInfo = " + node.FieldInfo + " on " + node.FieldInfo.DeclaringType.Name);
AppendLine(indent, "Operand =");
PrintNode(node.Operand, indent + 1);
}
public virtual Expression VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
public bool VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
private static FieldAccess FindFieldAccessor(Type theType)
{
var field = FindAutoIdAccessor(theType);
return(FieldAccess.Create(field));
}
public static bool IsAccessible(FieldAccess fieldAccess)
{
return(!(fieldAccess == FieldAccess.NOT_ACCESSIBLE));
}
public BitRange VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
/// <summary>
/// Returns the value that corresponds to the given field access.
/// </summary>
/// <param name="access">The field access.</param>
/// <returns>The resolved field type.</returns>
public ValueReference this[FieldAccess access]
{
get => builder[access.Index];
public virtual Expression VisitFieldAccess(FieldAccess acc)
{
var str = acc.Structure.Accept(this);
return(new FieldAccess(acc.DataType, str, acc.Field));
}
void IExpressionVisitor.VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
public ValueSet VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
private void PrintResolvedFieldAccess(FieldAccess node, int indent)
{
AppendLine(indent, "FieldInfo = " + node.FieldInfo + " on " + node.FieldInfo.DeclaringType.Name);
AppendLine(indent, "Operand =");
PrintNode(node.Operand, indent + 1);
}
/// <summary>
/// Appends the referenced field accessor.
/// </summary>
/// <param name="fieldAccess">The field access.</param>
public void AppendFieldViaPtr(FieldAccess fieldAccess)
{
stringBuilder.Append("->");
AppendFieldName(fieldAccess.Index);
}
public void VisitFieldAccess(FieldAccess access)
{
throw new NotImplementedException();
}
public override void VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
public DataType VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
public static bool IsRequired(FieldAccess fieldAccess)
{
return((fieldAccess == FieldAccess.WRITE_ONLY_REQUIRED) || (fieldAccess == FieldAccess.READ_WRITE_REQUIRED));
}
public virtual void VisitFieldAccess(FieldAccess acc)
{
acc.Structure.Accept(this);
}
public static bool IsWritable(FieldAccess fieldAccess)
{
return ((fieldAccess == FieldAccess.WRITE_ONLY) || (fieldAccess == FieldAccess.READ_WRITE) || (fieldAccess == FieldAccess.WRITE_ONLY_REQUIRED) || (fieldAccess == FieldAccess.READ_WRITE_REQUIRED));
}
public SlicerResult VisitFieldAccess(FieldAccess acc, BackwardSlicerContext ctx)
{
throw new NotImplementedException();
}
public void FieldAccess(FieldAccess fieldAccess)
{
bool fieldAsParameter = _fieldAsParameter;
bool loadAddress =
fieldAccess.FieldInfo.FieldType.IsValueType &&
fieldAsParameter &&
!fieldAccess.FieldInfo.IsInitOnly;
if (!(fieldAccess.Operand is TypeAccess))
{
_fieldAsParameter = true;
try
{
fieldAccess.Operand.Accept(this);
}
finally
{
_fieldAsParameter = fieldAsParameter;
}
if (loadAddress)
_il.Emit(OpCodes.Ldflda, fieldAccess.FieldInfo);
else
_il.Emit(OpCodes.Ldfld, fieldAccess.FieldInfo);
}
else
{
if (loadAddress)
_il.Emit(OpCodes.Ldsflda, fieldAccess.FieldInfo);
else
_il.Emit(OpCodes.Ldsfld, fieldAccess.FieldInfo);
}
if (
fieldAccess.FieldInfo.FieldType.IsValueType &&
fieldAsParameter &&
fieldAccess.FieldInfo.IsInitOnly
) {
var builder = _il.DeclareLocal(fieldAccess.FieldInfo.FieldType);
_il.Emit(OpCodes.Stloc, builder);
_il.Emit(OpCodes.Ldloca, builder);
}
}
public static string ToTestString(this FieldAccess fieldAccess) =>
$"{fieldAccess.This?.ToTestString() ?? fieldAccess.Object?.ToTestString() ?? fieldAccess.Classname.ToTestString()}" +
$".{fieldAccess.Field.ToTestString()}";
/// <summary>
/// evaluates expression.
/// This method is used by TemplateManager extensibility.
/// </summary>
public object EvalExpression(Expression exp)
{
currentExpression = exp;
try
{
if (exp is StringLiteral)
{
return(((StringLiteral)exp).Content);
}
else if (exp is Name)
{
return(GetValue(((Name)exp).Id));
}
else if (exp is FieldAccess)
{
FieldAccess fa = (FieldAccess)exp;
object obj = EvalExpression(fa.Exp);
string propertyName = fa.Field == "channelid"?"catalogid":fa.Field;//因为obj里面没有channelid，而对应的是catalgoid
return(EvalProperty(obj, propertyName));
}
else if (exp is MethodCall)
{
MethodCall ma = (MethodCall)exp;
object obj = EvalExpression(ma.CallObject);
string methodName = ma.Name;
return(EvalMethodCall(obj, methodName, EvalArguments(ma.Args)));
}
else if (exp is IntLiteral)
{
return(((IntLiteral)exp).Value);
}
else if (exp is DoubleLiteral)
{
return(((DoubleLiteral)exp).Value);
}
else if (exp is FCall)
{
FCall fcall = (FCall)exp;
if (!functions.ContainsKey(fcall.Name))
{
string msg = string.Format("函数 '{0}' 未定义.", fcall.Name);
throw new TemplateRuntimeException(msg, exp.Line, exp.Col);
}
TemplateFunction func = functions[fcall.Name];
object[] values = EvalArguments(fcall.Args);
return(func(values));
}
else if (exp is StringExpression)
{
StringExpression stringExp = (StringExpression)exp;
StringBuilder sb = new StringBuilder();
foreach (Expression ex in stringExp.Expressions)
{
sb.Append(EvalExpression(ex));
}
return(sb.ToString());
}
else if (exp is BinaryExpression)
{
return(EvalBinaryExpression(exp as BinaryExpression));
}
else if (exp is ArrayAccess)
{
return(EvalArrayAccess(exp as ArrayAccess));
}
else
{
throw new TemplateRuntimeException("Invalid expression type: " + exp.GetType().Name, exp.Line, exp.Col);
}
}
catch (TemplateRuntimeException ex)
{
DisplayError(ex);
return(null);
}
catch (Exception ex)
{
DisplayError(new TemplateRuntimeException(ex.Message, currentExpression.Line, currentExpression.Col));
return(null);
}
}
public static bool IsAccessible(FieldAccess fieldAccess)
{
return (!(fieldAccess == FieldAccess.NOT_ACCESSIBLE));
}
public Expression VisitPointer(Pointer ptr)
{
Expression e = c;
if (IsSegmentPointer(ptr))
{
Identifier segID;
if (mpSelectorToSegId.TryGetValue(c.ToUInt16(), out segID))
{
return(segID);
}
return(e);
}
else if (GlobalVars != null)
{
// Null pointer.
if (c.IsZero)
{
var np = Address.Create(ptr, 0);
np.TypeVariable = c.TypeVariable;
np.DataType = c.DataType;
return(np);
}
var addr = program.Platform.MakeAddressFromConstant(c);
// An invalid pointer -- often used as sentinels in code.
if (!program.SegmentMap.IsValidAddress(addr))
{
//$TODO: probably should use a reinterpret_cast here.
var ce = new Cast(c.DataType, c);
ce.TypeVariable = c.TypeVariable;
ce.DataType = ptr;
return(ce);
}
var dt = ptr.Pointee.ResolveAs <DataType>();
if (IsCharPtrToReadonlySection(c, dt))
{
PromoteToCString(c, dt);
return(ReadNullTerminatedString(c, dt));
}
StructureField f = EnsureFieldAtOffset(GlobalVars, dt, c.ToInt32());
var ptrGlobals = new Pointer(GlobalVars, platform.PointerType.Size);
e = new FieldAccess(ptr.Pointee, new Dereference(ptrGlobals, globals), f);
if (dereferenced)
{
e.DataType = ptr.Pointee;
}
else
{
var array = f.DataType as ArrayType;
if (array != null) // C language rules 'promote' arrays to pointers.
{
e.DataType = program.TypeFactory.CreatePointer(
array.ElementType,
platform.PointerType.Size);
}
else
{
e = new UnaryExpression(Operator.AddrOf, ptr, e);
}
}
}
return(e);
}
public static bool IsRequired(FieldAccess fieldAccess)
{
return ((fieldAccess == FieldAccess.WRITE_ONLY_REQUIRED) || (fieldAccess == FieldAccess.READ_WRITE_REQUIRED));
}
public virtual Expression VisitFieldAccess(FieldAccess acc)
{
acc.Structure = acc.Structure.Accept(this);
return(acc);
}
private void HandleCompositeCommand(JdwpPacket packet)
{
var data = packet.Data;
var suspendPolicy = (Jdwp.SuspendPolicy) data.GetByte();
var count = data.GetInt();
for (var i = 0; i < count; i++)
{
var eventKind = (Jdwp.EventKind) data.GetByte();
JdwpEvent evt;
switch (eventKind)
{
case Jdwp.EventKind.VmInit:
evt = new VmStart(data);
break;
case Jdwp.EventKind.SingleStep:
evt = new SingleStep(data);
break;
case Jdwp.EventKind.BreakPoint:
evt = new Breakpoint(data);
break;
case Jdwp.EventKind.MethodEntry:
evt = new MethodEntry(data);
break;
case Jdwp.EventKind.MethodExit:
evt = new MethodExit(data);
break;
case Jdwp.EventKind.Exception:
evt = new Exception(data);
break;
case Jdwp.EventKind.ThreadStart:
evt = new ThreadStart(data);
break;
case Jdwp.EventKind.ThreadEnd:
evt = new ThreadDeath(data);
break;
case Jdwp.EventKind.ClassPrepare:
evt = new ClassPrepare(data);
break;
case Jdwp.EventKind.ClassUnload:
evt = new ClassUnload(data);
break;
case Jdwp.EventKind.FieldAccess:
evt = new FieldAccess(data);
break;
case Jdwp.EventKind.FieldModification:
evt = new FieldModification(data);
break;
case Jdwp.EventKind.VmDeath:
evt = new VmDeath(data);
break;
default:
throw new ArgumentException("Unknown event kind in compositive command " + (int)eventKind);
}
DLog.Debug(DContext.DebuggerLibDebugger, "JDWP event {0} {1}", eventKind, evt);
Task.Factory.StartNew(() => {
evt.Accept(compositeCommandProcessor, suspendPolicy);
});
}
}
public bool VisitFieldAccess(FieldAccess acc, TypeVariable tv)
{
throw new NotImplementedException();
}
Expression PrimaryExpression()
{
if (Current.TokenKind == TokenKind.StringStart)
{
return(ReadString());
}
else if (Current.TokenKind == TokenKind.ID)
{
Token id = Consume();
Expression exp = null;
// if ( follows ID, we have a function call
if (Current.TokenKind == TokenKind.LParen)
{
Consume(); // consume LParen
Expression[] args = ReadArguments();
Consume(TokenKind.RParen);
exp = new FCall(id.Line, id.Col, id.Data, args);
}
else // else, we just have id
{
exp = new Name(id.Line, id.Col, id.Data);
}
// while we have ".", keep chaining up field access or method call
while (Current.TokenKind == TokenKind.Dot || Current.TokenKind == TokenKind.LBracket)
{
if (Current.TokenKind == TokenKind.Dot)
{
Consume(); // consume DOT
Token field = Consume(TokenKind.ID); // consume ID after dot
// if "(" after ID, then it's a method call
if (Current.TokenKind == TokenKind.LParen)
{
Consume(); // consume "("
Expression[] args = ReadArguments();
Consume(TokenKind.RParen); // read ")"
exp = new MethodCall(field.Line, field.Col, exp, field.Data, args);
}
else
{
exp = new FieldAccess(field.Line, field.Col, exp, field.Data);
}
}
else // must be LBracket
{
// array access
Token bracket = Current;
Consume(); // consume [
Expression indexExp = TopExpression();
Consume(TokenKind.RBracket);
exp = new ArrayAccess(bracket.Line, bracket.Col, exp, indexExp);
}
}
return(exp);
}
else if (Current.TokenKind == TokenKind.Integer)
{
int value = Int32.Parse(Current.Data);
IntLiteral intLiteral = new IntLiteral(Current.Line, Current.Col, value);
Consume(); // consume int
return(intLiteral);
}
else if (Current.TokenKind == TokenKind.Double)
{
double value = Double.Parse(Current.Data);
DoubleLiteral dLiteral = new DoubleLiteral(Current.Line, Current.Col, value);
Consume(); // consume int
return(dLiteral);
}
else if (Current.TokenKind == TokenKind.LParen)
{
Consume(); // eat (
Expression exp = TopExpression();
Consume(TokenKind.RParen); // eat )
return(exp);
}
else
{
throw new ParseException("Invalid token in expression: " + Current.TokenKind + ". Was expecting ID or string.", Current.Line, Current.Col);
}
}
private void HandleCompositeCommand(JdwpPacket packet)
{
var data = packet.Data;
var suspendPolicy = (Jdwp.SuspendPolicy) data.GetByte();
var count = data.GetInt();
for (var i = 0; i < count; i++)
{
var eventKind = (Jdwp.EventKind) data.GetByte();
JdwpEvent evt;
switch (eventKind)
{
case Jdwp.EventKind.VmInit:
evt = new VmStart(data);
break;
case Jdwp.EventKind.SingleStep:
evt = new SingleStep(data);
break;
case Jdwp.EventKind.BreakPoint:
evt = new Breakpoint(data);
break;
case Jdwp.EventKind.MethodEntry:
evt = new MethodEntry(data);
break;
case Jdwp.EventKind.MethodExit:
evt = new MethodExit(data);
break;
case Jdwp.EventKind.Exception:
evt = new Exception(data);
break;
case Jdwp.EventKind.ThreadStart:
evt = new ThreadStart(data);
break;
case Jdwp.EventKind.ThreadEnd:
evt = new ThreadDeath(data);
break;
case Jdwp.EventKind.ClassPrepare:
evt = new ClassPrepare(data);
break;
case Jdwp.EventKind.ClassUnload:
evt = new ClassUnload(data);
break;
case Jdwp.EventKind.FieldAccess:
evt = new FieldAccess(data);
break;
case Jdwp.EventKind.FieldModification:
evt = new FieldModification(data);
break;
case Jdwp.EventKind.VmDeath:
evt = new VmDeath(data);
break;
default:
throw new ArgumentException("Unknown event kind in compositive command " + (int)eventKind);
}
DLog.Debug(DContext.DebuggerLibDebugger, "JDWP event {0} {1}", eventKind, evt);
Task.Factory.StartNew(() => {
evt.Accept(compositeCommandProcessor, suspendPolicy);
}).ContinueWith(task =>
{
DLog.Error(DContext.DebuggerLibJdwpConnection, "HandleCompositeCommand: Internal failure on event processing. SuspendPolicy was {1}; IsCancelled={0}. Exception={1}", suspendPolicy, task.IsCanceled, task.Exception);
if (suspendPolicy != Jdwp.SuspendPolicy.None)
{
// we should better resume the VM, as the command handler may have failed to do so.
if(Connected)
VirtualMachine.ResumeAsync();
}
}, TaskContinuationOptions.NotOnRanToCompletion);
}
}
public void VisitFieldAccess(FieldAccess acc)
{
int prec = SetPrecedence(PrecedenceFieldAccess);
Dereference d = acc.Structure as Dereference;
if (d != null)
{
d.Expression.Accept(this);
writer.Write("->{0}", acc.Field.Name);
}
else
{
var scope = acc.Structure as ScopeResolution;
if (scope != null)
{
scope.Accept(this);
writer.Write("::{0}", acc.Field.Name);
}
else
{
acc.Structure.Accept(this);
writer.Write(".{0}", acc.Field.Name);
}
}
ResetPresedence(prec);
}
/// <summary> /// Returns the field type that corresponds to the given field access. /// </summary> /// <param name="access">The field access.</param> /// <returns>The resolved field type.</returns> public TypeNode this[FieldAccess access] => allFieldsBuilder[access.Index];
public override void VisitFieldAccess(FieldAccess acc)
{
throw new NotImplementedException();
}
public void VisitFieldAccess(FieldAccess access)
{
throw new NotImplementedException();
}
public virtual void VisitFieldAccess(FieldAccess acc)
{
acc.Structure.Accept(this);
}
private void visitExpression(Expression expression)
{
if (expression is Name)
{
WriteLine("Name: " + ((Name)expression).Id);
}
else if (expression is FCall)
{
FCall fcall = (FCall)expression;
WriteLine("FCall: " + fcall.Name);
WriteLine("Parameters: ");
foreach (Expression exp in fcall.Args)
{
visitExpression(exp);
}
}
else if (expression is FieldAccess)
{
FieldAccess fa = (FieldAccess)expression;
WriteLine("FieldAccess: " + fa.Exp + "." + fa.Field);
}
else if (expression is StringLiteral)
{
StringLiteral literal = (StringLiteral)expression;
if (literal.Content.Length > 50)
{
WriteLine("String: " + literal.Content.Substring(0, 50) + "...");
}
else
{
WriteLine("String: " + literal.Content);
}
}
else if (expression is StringExpression)
{
StringExpression sexp = (StringExpression)expression;
WriteLine("StringExpression");
foreach (Expression exp in sexp.Expressions)
{
visitExpression(exp);
}
}
else if (expression is BinaryExpression)
{
BinaryExpression sexp = (BinaryExpression)expression;
WriteLine("BinaryExpression");
visitExpression(sexp.Lhs);
WriteLine("Operator " + sexp.Operator.ToString());
visitExpression(sexp.Rhs);
}
else
{
WriteLine("Expression: " + expression.GetType().ToString());
}
}