public void Blocks()
{
MethodReference writeLineM = MethodReference.FromLambda(() => Console.WriteLine(""));
MethodReference readLineM = MethodReference.FromLambda(() => Console.ReadLine());
Expression expr = Expression.Block(
ImmutableArray.Create(
Expression.StaticMethodCall(
writeLineM,
Expression.Constant("Enter the output file path: ")
)
),
Expression.StaticMethodCall(readLineM)
);
cx.AddTestExpr(expr);
Expression listOfWrites =
Enumerable.Range(1, 30)
.Select(i => $"Line {i}")
.Select(Expression.Constant)
.Select(a => Expression.StaticMethodCall(writeLineM, a))
.ToBlock();
cx.AddTestExpr(listOfWrites);
check.CheckOutput(cx);
}
public void HelloWorld()
{
// declare
// namespace MyApp.HelloWorld {
var ns = NamespaceSignature.Parse("MyApp.HelloWorld");
// public class Program {
var programType = TypeSignature.Class("Program", ns, Accessibility.APublic);
// public static int Main() {
var mainMethod = MethodSignature.Static("Main", programType, Accessibility.APublic, returnType: TypeSignature.Int32);
// get the Console.WriteLine reference
var writeLineRef = MethodReference.FromLambda(() => Console.WriteLine(""));
var body = new [] {
Expression.StaticMethodCall(writeLineRef, Expression.Constant("Hello world!"))
}.ToBlock(
result: Expression.Constant(0)
);
var type = TypeDef.Empty(programType).AddMember(
MethodDef.Create(mainMethod, body)
);
var cx = MetadataContext.Create();
cx.AddType(type);
var csharp = cx.EmitToString();
check.CheckString(csharp, fileExtension: "cs");
}
public void LoadGenericFunction()
{
var genericMethod = MethodReference.FromLambda(() => ValidationResult.Create("abc")).Signature;
var genericParent = MethodReference.FromLambda <ValidationResult <string> >(a => a.Expect("a")).Signature;
check.CheckJsonObject(new { genericMethod, genericParent });
}
public void Conditions()
{
Expression myString = pString1.Read();
Expression cond = Expression.Conditional(
myString.IsNull(),
Expression.Constant("<empty>"),
myString
);
cx.AddTestExpr(cond, pString1);
Expression a = p1.Read();
Expression cond2 = Expression.Conditional(
Expression.Binary(">", a, Expression.Constant(10)),
Expression.StaticMethodCall(
MethodReference.FromLambda(() => Console.WriteLine(1)),
a),
Expression.Nop
);
cx.AddTestExpr(cond2, p1);
Expression cond3 = Expression.IfThen(
Expression.Binary(">", a, Expression.Constant(10)),
Expression.StaticMethodCall(
MethodReference.FromLambda(() => Console.WriteLine(1)),
a)
);
cx.AddTestExpr(cond3, p1);
check.CheckOutput(cx);
}
public void NestedGenericParameter()
{
var m = MethodReference.FromLambda <ArraySegment <int> .Enumerator>(e => e.Current);
var s = m.Signature;
Assert.Empty(s.DeclaringType.TypeParameters);
Assert.Equal(s.ResultType, ((TypeOrNamespace.TypeSignatureCase)s.DeclaringType.Parent).Item.TypeParameters.Single());
}
public void NewObject()
{
var ctor = MethodReference.FromLambda(() => new System.Collections.Generic.List <int>(0));
cx.AddTestExpr(Expression.NewObject(ctor, Expression.Constant(100)));
check.CheckOutput(cx);
}
public static MethodDef ImplementToString(TypeSignature declaringType)
{
var method = MethodSignature.Override(declaringType, MethodSignature.Object_ToString);
return(MethodDef.Create(method, @this => {
return
@this.Ref()
.CallMethod(FormatMethodSignature(declaringType))
.CallMethod(MethodReference.FromLambda <FmtToken>(x => x.ToString("\t", null)));
}));
}
public void LoadReflectionGenericMethod()
{
var ref1 = MethodReference.FromLambda(() => Array.Empty <String>());
var ilspyMethod = cx.GetMethod(ref1);
Assert.Equal("System.Array.Empty", ilspyMethod.ReflectionName);
Assert.Equal("System.String", ilspyMethod.TypeArguments.Single().ReflectionName);
var ref2 = SymbolLoader.Method(ilspyMethod);
Assert.Equal(ref1.Signature, ref2);
}
public void NullCoalesce()
{
MethodReference readLineM = MethodReference.FromLambda(() => Console.ReadLine());
cx.AddTestExpr(pString1.Read().NullCoalesce(Expression.Constant("<null>")), pString1);
cx.AddTestExpr(Expression.StaticMethodCall(readLineM).NullCoalesce(Expression.Constant("<null>")));
cx.AddTestExpr(pNullInt.Read().NullCoalesce(ExpressionFactory.Nullable_Create(Expression.Constant(-1))), pNullInt);
// cx.AddTestExpr(pNullInt.Read().NullCoalesce(Expression.Constant(-1)), pNullInt);
check.CheckOutput(cx);
}
public void LoadSpecializeGenericFunction()
{
var genericMethod = MethodReference.FromLambda(() => ValidationResult.Create("abc"))
.Signature
.Specialize(null, new [] { TypeReference.FromType(typeof(int)) });
var genericParent = MethodReference.FromLambda <ValidationResult <string> >(a => a.Expect("a"))
.Signature
.Specialize(new [] { TypeReference.FromType(typeof(bool)) }, null);
check.CheckJsonObject(new { genericMethod_S = genericMethod.ToString(),
genericParent_S = genericParent.ToString(),
genericMethod,
genericParent });
}
public void ConstructorCall()
{
cx.AddTestExpr(Expression.NewObject(
MethodReference.FromLambda(() => new List <String>()),
ImmutableArray <Expression> .Empty
));
cx.AddTestExpr(Expression.NewObject(
MethodReference.FromLambda(() => new List <String>(55)),
ImmutableArray.Create(Expression.Constant(1234))
));
cx.AddTestExpr(Expression.NewObject(
MethodReference.FromLambda(() => new DateTime(55L)),
ImmutableArray.Create(Expression.Constant(1234L))
));
check.CheckOutput(cx);
}
static MethodSignature FormatMethodSignature(TypeSignature declaringType) => MethodSignature.Override(declaringType, MethodReference.FromLambda <ITokenFormatable>(t => t.Format()).Signature);
public void GenericClass()
{
var paramT = GenericParameter.Create("T");
var myContainerSgn = TypeSignature.Class(
"MyContainer",
NamespaceSignature.Parse("NS"),
Accessibility.APublic,
genericParameters: new [] { paramT }
);
var(item_field, item_prop) = PropertyBuilders.CreateAutoProperty(
myContainerSgn,
name: "Item",
propertyType: paramT,
isReadOnly: false
);
var listType = TypeSignature.FromType(typeof(List <>))
.Specialize(paramT);
var toListSgn = MethodSignature.Instance(
"ToList",
myContainerSgn,
Accessibility.APublic,
returnType: listType
);
var toListDef = MethodDef.Create(toListSgn, thisParam => {
var resultVar = ParameterExpression.Create(listType, "result");
var listCtor = MethodReference.FromLambda(() => new List <int>())
.Signature
.Specialize(paramT);
var listAdd = MethodReference.FromLambda <List <int> >(l => l.Add(0))
.Signature
.Specialize(paramT);
return(Expression.LetIn(
// result = new List<T>()
resultVar, Expression.NewObject(listCtor),
new [] {
// result.Add(this.Item)
resultVar.Read().CallMethod(listAdd,
thisParam.Read().ReadField(item_field.Signature.SpecializeFromDeclaringType())
)
}.ToBlock(resultVar)
));
});
var copyFromSgn = MethodSignature.Instance(
"CopyFrom",
myContainerSgn,
Accessibility.APublic,
returnType: TypeSignature.Void,
new MethodParameter(
myContainerSgn.SpecializeByItself(),
"other"
)
);
var copyFromDef = MethodDef.Create(copyFromSgn, (thisParam, otherParam) => {
var field = item_field.Signature.SpecializeFromDeclaringType();
return(thisParam.Read().AssignField(
field,
otherParam.Read().ReadField(field)
));
});
var myContainerDef =
TypeDef.Empty(myContainerSgn)
.AddMember(item_field, item_prop, toListDef, copyFromDef);
cx.AddType(myContainerDef);
check.CheckOutput(cx);
}