本文整理汇总了C#中CallEmitter类的典型用法代码示例。如果您正苦于以下问题:C# CallEmitter类的具体用法?C# CallEmitter怎么用?C# CallEmitter使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
CallEmitter类属于命名空间,在下文中一共展示了CallEmitter类的5个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Emit
public override void Emit (EmitContext ec)
{
if (IsBitwiseBoolean && UserOperator == null) {
EmitBitwiseBoolean (ec);
return;
}
if ((Binary.Oper & Binary.Operator.EqualityMask) != 0) {
EmitEquality (ec);
return;
}
Label is_null_label = ec.DefineLabel ();
Label end_label = ec.DefineLabel ();
if (ec.HasSet (BuilderContext.Options.AsyncBody) && Right.ContainsEmitWithAwait ()) {
Left = Left.EmitToField (ec);
Right = Right.EmitToField (ec);
}
if (UnwrapLeft != null) {
UnwrapLeft.EmitCheck (ec);
}
//
// Don't emit HasValue check when left and right expressions are same
//
if (UnwrapRight != null && !Binary.Left.Equals (Binary.Right)) {
UnwrapRight.EmitCheck (ec);
if (UnwrapLeft != null) {
ec.Emit (OpCodes.And);
}
}
ec.Emit (OpCodes.Brfalse, is_null_label);
if (UserOperator != null) {
var args = new Arguments (2);
args.Add (new Argument (Left));
args.Add (new Argument (Right));
var call = new CallEmitter ();
call.EmitPredefined (ec, UserOperator, args);
} else {
Binary.EmitOperator (ec, Left, Right);
}
//
// Wrap the result when the operator return type is nullable type
//
if (type.IsNullableType)
ec.Emit (OpCodes.Newobj, NullableInfo.GetConstructor (type));
ec.Emit (OpCodes.Br_S, end_label);
ec.MarkLabel (is_null_label);
if ((Binary.Oper & Binary.Operator.ComparisonMask) != 0) {
ec.EmitInt (0);
} else {
LiftedNull.Create (type, loc).Emit (ec);
}
ec.MarkLabel (end_label);
}
示例2: EmitEquality
//
// Emits optimized equality or inequality operator when possible
//
void EmitEquality (EmitContext ec)
{
//
// Either left or right is null
//
if (UnwrapLeft != null && Binary.Right.IsNull) { // TODO: Optimize for EmitBranchable
//
// left.HasValue == false
//
UnwrapLeft.EmitCheck (ec);
if (Binary.Oper == Binary.Operator.Equality) {
ec.EmitInt (0);
ec.Emit (OpCodes.Ceq);
}
return;
}
if (UnwrapRight != null && Binary.Left.IsNull) {
//
// right.HasValue == false
//
UnwrapRight.EmitCheck (ec);
if (Binary.Oper == Binary.Operator.Equality) {
ec.EmitInt (0);
ec.Emit (OpCodes.Ceq);
}
return;
}
Label dissimilar_label = ec.DefineLabel ();
Label end_label = ec.DefineLabel ();
if (UserOperator != null) {
var left = Left;
if (UnwrapLeft != null) {
UnwrapLeft.EmitCheck (ec);
} else {
// Keep evaluation order same
if (!(Left is VariableReference)) {
Left.Emit (ec);
var lt = new LocalTemporary (Left.Type);
lt.Store (ec);
left = lt;
}
}
if (UnwrapRight != null) {
UnwrapRight.EmitCheck (ec);
if (UnwrapLeft != null) {
ec.Emit (OpCodes.Bne_Un, dissimilar_label);
Label compare_label = ec.DefineLabel ();
UnwrapLeft.EmitCheck (ec);
ec.Emit (OpCodes.Brtrue, compare_label);
if (Binary.Oper == Binary.Operator.Equality)
ec.EmitInt (1);
else
ec.EmitInt (0);
ec.Emit (OpCodes.Br, end_label);
ec.MarkLabel (compare_label);
} else {
ec.Emit (OpCodes.Brfalse, dissimilar_label);
}
} else {
ec.Emit (OpCodes.Brfalse, dissimilar_label);
}
var args = new Arguments (2);
args.Add (new Argument (left));
args.Add (new Argument (Right));
var call = new CallEmitter ();
call.EmitPredefined (ec, UserOperator, args);
} else {
if (ec.HasSet (BuilderContext.Options.AsyncBody) && Binary.Right.ContainsEmitWithAwait ()) {
Left = Left.EmitToField (ec);
Right = Right.EmitToField (ec);
}
//
// Emit underlying value comparison first.
//
// For this code: int? a = 1; bool b = a == 1;
//
// We emit something similar to this. Expressions with side effects have local
// variable created by Unwrap expression
//
// left.GetValueOrDefault ()
// right
// bne.un.s dissimilar_label
// left.HasValue
// br.s end_label
//.........这里部分代码省略.........
示例3: EmitCheck
public void EmitCheck (EmitContext ec)
{
Store (ec);
var call = new CallEmitter ();
call.InstanceExpression = this;
call.EmitPredefined (ec, NullableInfo.GetHasValue (expr.Type), null);
}
示例4: EmitOperation
protected override void EmitOperation (EmitContext ec)
{
Label is_null_label = ec.DefineLabel ();
Label end_label = ec.DefineLabel ();
LocalTemporary lt = new LocalTemporary (type);
// Value is on the stack
lt.Store (ec);
var call = new CallEmitter ();
call.InstanceExpression = lt;
call.EmitPredefined (ec, NullableInfo.GetHasValue (expr.Type), null);
ec.Emit (OpCodes.Brfalse, is_null_label);
call = new CallEmitter ();
call.InstanceExpression = lt;
call.EmitPredefined (ec, NullableInfo.GetGetValueOrDefault (expr.Type), null);
lt.Release (ec);
base.EmitOperation (ec);
ec.Emit (OpCodes.Newobj, NullableInfo.GetConstructor (type));
ec.Emit (OpCodes.Br_S, end_label);
ec.MarkLabel (is_null_label);
LiftedNull.Create (type, loc).Emit (ec);
ec.MarkLabel (end_label);
}
示例5: Emit
public override void Emit (EmitContext ec)
{
Store (ec);
var call = new CallEmitter ();
call.InstanceExpression = this;
if (useDefaultValue)
call.EmitPredefined (ec, NullableInfo.GetGetValueOrDefault (expr.Type), null);
else
call.EmitPredefined (ec, NullableInfo.GetValue (expr.Type), null);
}