public static void EmitGetUnpackerItemsCountAsInt32(TracingILGenerator il, int unpackerArgumentIndex, LocalVariableHolder localHolder)
{
Contract.Requires(il != null);
Contract.Requires(unpackerArgumentIndex >= 0);
il.EmitAnyLdloca(localHolder.RawItemsCount);
il.EmitInitobj(typeof(long));
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(_Unpacker.ItemsCount);
il.EmitAnyStloc(localHolder.RawItemsCount);
il.BeginCatchBlock(typeof(InvalidOperationException));
il.EmitAnyCall(SerializationExceptions.NewIsIncorrectStreamMethod);
il.EmitThrow();
il.EndExceptionBlock();
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitLdc_I8(0x7fffffffL);
Label target = il.DefineLabel();
il.EmitBle_S(target);
il.EmitAnyCall(SerializationExceptions.NewIsTooLargeCollectionMethod);
il.EmitThrow();
il.MarkLabel(target);
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitConv_I4();
}
/// <summary>
/// Emits gets <see cref="Unpacker.ItemsCount"/> with exception handling.
/// Note that final state is the value is pushed top of the evaluation stack.
/// </summary>
/// <param name="il">IL generator.</param>
/// <param name="unpackerArgumentIndex">Argument index of the unpacker.</param>
/// <param name="localHolder">The <see cref="LocalVariableHolder"/> which holds shared local variable information.</param>
public static void EmitGetUnpackerItemsCountAsInt32(TracingILGenerator il, int unpackerArgumentIndex, LocalVariableHolder localHolder)
{
Contract.Requires(il != null);
Contract.Requires(unpackerArgumentIndex >= 0);
/*
* long rawItemsCount;
* try
* {
* rawItemsCount = unpacker.ItemsCount;
* }
* catch ( InvalidOperationException ex )
* {
* throw SerializationExceptions.NewIsIncorrectStream( ex );
* }
*
* if( rawItemsCount > Int32.MaxValue )
* {
* throw SerializationException.NewIsTooLargeCollection();
* }
*
* ... unchecked( ( int )rawItemsCount );
*/
il.EmitAnyLdloca(localHolder.RawItemsCount);
il.EmitInitobj(typeof(long));
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(Metadata._Unpacker.ItemsCount);
il.EmitAnyStloc(localHolder.RawItemsCount);
il.BeginCatchBlock(typeof(InvalidOperationException));
il.EmitAnyCall(SerializationExceptions.NewIsIncorrectStreamMethod);
il.EmitThrow();
il.EndExceptionBlock();
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitLdc_I8(Int32.MaxValue);
var endIf = il.DefineLabel();
il.EmitBle_S(endIf);
il.EmitAnyCall(SerializationExceptions.NewIsTooLargeCollectionMethod);
il.EmitThrow();
il.MarkLabel(endIf);
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitConv_I4();
}