public static Func <IExtractContext, string[]> ApplyFalse(
ICodeInformation operand, string oper, DecodeContext decodeContext)
{
var si = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
if (si.TargetType.IsBooleanType)
{
return(extractContext => new[] { string.Format(
"if ({0} {1} false) goto {2}",
extractContext.GetSymbolName(si),
oper,
labelName) });
}
else if (si.TargetType.IsNumericPrimitive ||
si.TargetType.IsEnum)
{
return(extractContext => new[] { string.Format(
"if ({0} {1} 0) goto {2}",
extractContext.GetSymbolName(si),
oper,
labelName) });
}
else
{
return(extractContext => new[] { string.Format(
"if ({0} {1} NULL) goto {2}",
extractContext.GetSymbolName(si),
oper,
labelName) });
}
}
public override ExpressionEmitter Prepare(
ICodeInformation operand, DecodeContext decodeContext)
{
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
return((_, __) => new[] { string.Format("goto {0}", labelName) });
}
public override Func <IExtractContext, string[]> Apply(
ICodeInformation operand, DecodeContext decodeContext)
{
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
return(_ => new[] { string.Format("goto {0}", labelName) });
}
public override Func <IExtractContext, string[]> Apply(
ICodeInformation operand, DecodeContext decodeContext)
{
var si = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
if (si.TargetType.IsBooleanType)
{
return(extractContext => new[] { string.Format(
"if (!({0})) goto {1}",
extractContext.GetSymbolName(si),
labelName) });
}
else if (si.TargetType.IsNumericPrimitive)
{
return(extractContext => new[] { string.Format(
"if ({0} == 0) goto {1}",
extractContext.GetSymbolName(si),
labelName) });
}
else
{
return(extractContext => new[] { string.Format(
"if ({0} == NULL) goto {1}",
extractContext.GetSymbolName(si),
labelName) });
}
}
public override Func <IExtractContext, string[]> Apply(
Instruction operand, DecodeContext decodeContext)
{
var si1 = decodeContext.PopStack();
var si0 = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
return(_ => new[] { string.Format(
"if ({0} != {1}) goto {2}",
si0.SymbolName,
si1.SymbolName,
labelName) });
}
public override Func <IExtractContext, string[]> Apply(
ICodeInformation operand, DecodeContext decodeContext)
{
var si1 = decodeContext.PopStack();
var si0 = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
return(extractContext => new[] { string.Format(
"if ({0} != {1}) goto {2}",
extractContext.GetSymbolName(si0),
extractContext.GetSymbolName(si1),
labelName) });
}
public static ExpressionEmitter ApplyBinary(
ICodeInformation operand, string oper, DecodeContext decodeContext)
{
var si1 = decodeContext.PopStack();
var si0 = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
return((extractContext, _) => new[] { string.Format(
"if ({0} {1} {2}) goto {3}",
extractContext.GetSymbolName(si0),
oper,
extractContext.GetSymbolName(si1),
labelName) });
}
public override Func <IExtractContext, string[]> Apply(
Instruction operand, DecodeContext decodeContext)
{
var si = decodeContext.PopStack();
var labelName = decodeContext.EnqueueNewPath(operand.Offset);
if (si.TargetType.IsNumericPrimitive())
{
return(_ => new[] { string.Format(
"if ({0} != 0) goto {1}",
si.SymbolName,
labelName) });
}
else
{
return(_ => new[] { string.Format(
"if ({0} != NULL) goto {1}",
si.SymbolName,
labelName) });
}
}
public override Func <IExtractContext, string[]> Apply(
ICodeInformation operand, DecodeContext decodeContext)
{
// Strategy:
// The exception handlers have to use "leave" opcode to exit.
// It will be transition to finally block if declared.
// AND, continue to operand label (therefore it delayed evaluation.)
// The AssemblyWriter will write these fragments by labelName side-by-side declared continuationIndex.
decodeContext.EnqueueNewPath(operand.Offset);
var continuationIndex = decodeContext.RegisterLeaveContinuation(
decodeContext.CurrentCode.Offset, operand.Offset);
return(extractContext =>
{
var nestedIndexName = extractContext.GetExceptionNestedFrameIndexName();
return new[] { string.Format(
"il2c_leave({0}, {1})",
nestedIndexName,
continuationIndex) };
});
}