public static void StructImpl(AssemblyGen ag, bool impl)
{
ITypeMapper m = ag.TypeMapper;
TypeGen Test = ag.Struct("Test");
{
CodeGen g = Test.Public.Static.Method(typeof(void), "Main");
{
// test calling virtual member directly on a literal
// g.Local(Operand.FromObject(3).Invoke("GetHashCode"));
// test special case where the value type target doesn't implement the virtual function
var value = g.Local(Test);
g.InitObj(value);
g.WriteLine("Hash code of {0} is {1}", value, value.Invoke("GetHashCode"));
}
if (impl)
{
g = Test.Public.Override.Method(typeof(int), "GetHashCode");
{
g.Return(-1);
}
}
}
}
// example based on the MSDN Structs Sample (struct1.cs)
public static void GenStruct1(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
CodeGen g;
TypeGen SimpleStruct = ag.Struct("SimpleStruct");
{
FieldGen xval = SimpleStruct.Field(typeof(int), "xval");
PropertyGen X = SimpleStruct.Public.Property(typeof(int), "X");
{
X.Getter().GetCode().Return(xval);
g = X.Setter();
{
g.If(g.PropertyValue() < 100);
{
g.Assign(xval, g.PropertyValue());
}
g.End();
}
}
g = SimpleStruct.Public.Method(typeof(void), "DisplayX");
{
g.WriteLine("The stored value is: {0}", xval);
}
}
TypeGen TestClass = ag.Class("TestClass");
{
g = TestClass.Public.Static.Method(typeof(void), "Main");
{
var ss = g.Local(SimpleStruct);
g.InitObj(ss);
ITypeMapper typeMapper = ag.TypeMapper;
g.Assign(ss.Property("X"), 5);
g.Invoke(ss, "DisplayX");
}
}
}
// example based on the MSDN Structs Sample (struct2.cs)
public static void GenStruct2(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
TypeGen TheClass = ag.Class("TheClass");
{
TheClass.Public.Field(typeof(int), "x");
}
TypeGen TheStruct = ag.Struct("TheStruct");
{
TheStruct.Public.Field(typeof(int), "x");
}
TypeGen TestClass = ag.Class("TestClass");
{
CodeGen g = TestClass.Public.Static.Method(typeof(void), "structtaker").Parameter(TheStruct, "s");
{
ITypeMapper typeMapper = ag.TypeMapper;
g.Assign(g.Arg("s").Field("x"), 5);
}
g = TestClass.Public.Static.Method(typeof(void), "classtaker").Parameter(TheClass, "c");
{
ITypeMapper typeMapper = ag.TypeMapper;
g.Assign(g.Arg("c").Field("x"), 5);
}
g = TestClass.Public.Static.Method(typeof(void), "Main");
{
var a = g.Local(TheStruct);
g.InitObj(a);
ITypeMapper typeMapper4 = ag.TypeMapper;
var b = g.Local(exp.New(TheClass));
ITypeMapper typeMapper = ag.TypeMapper;
g.Assign(a.Field("x"), 1);
ITypeMapper typeMapper2 = ag.TypeMapper;
g.Assign(b.Field("x"), 1);
g.Invoke(TestClass, "structtaker", a);
g.Invoke(TestClass, "classtaker", b);
ITypeMapper typeMapper3 = ag.TypeMapper;
g.WriteLine("a.x = {0}", a.Field("x"));
ITypeMapper typeMapper1 = ag.TypeMapper;
g.WriteLine("b.x = {0}", b.Field("x"));
}
}
}
// example based on the MSDN User-Defined Conversions Sample (conversion.cs)
public static void GenConversion(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
TypeGen RomanNumeral = ag.Struct("RomanNumeral");
{
FieldGen value = RomanNumeral.Private.Field(typeof(int), "value");
CodeGen g = RomanNumeral.Public.Constructor().Parameter(typeof(int), "value");
{
g.Assign(value, g.Arg("value"));
}
// Declare a conversion from an int to a RomanNumeral. Note the
// the use of the operator keyword. This is a conversion
// operator named RomanNumeral:
g = RomanNumeral.Public.ImplicitConversionFrom(typeof(int));
{
// Note that because RomanNumeral is declared as a struct,
// calling new on the struct merely calls the constructor
// rather than allocating an object on the heap:
g.Return(exp.New(RomanNumeral, g.Arg("value")));
}
// Declare an explicit conversion from a RomanNumeral to an int:
g = RomanNumeral.Public.ExplicitConversionTo(typeof(int), "roman");
{
ITypeMapper typeMapper = ag.TypeMapper;
g.Return(g.Arg("roman").Field("value"));
}
// Declare an implicit conversion from a RomanNumeral to
// a string:
g = RomanNumeral.Public.ImplicitConversionTo(typeof(string));
{
g.Return("Conversion not yet implemented");
}
}
TypeGen Test = ag.Class("Test");
{
CodeGen g = Test.Public.Static.Method(typeof(void), "Main");
{
var numeral = g.Local(RomanNumeral);
g.Assign(numeral, 10);
// Call the explicit conversion from numeral to int. Because it is
// an explicit conversion, a cast must be used:
g.WriteLine(numeral.Cast(typeof(int)));
// Call the implicit conversion to string. Because there is no
// cast, the implicit conversion to string is the only
// conversion that is considered:
g.WriteLine(numeral);
// Call the explicit conversion from numeral to int and
// then the explicit conversion from int to short:
var s = g.Local(numeral.Cast(typeof(short)));
g.WriteLine(s);
}
}
}
// example based on the MSDN User-Defined Conversions Sample (structconversion.cs)
public static void GenStructConversion(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
TypeGen BinaryNumeral = ag.Struct("BinaryNumeral");
{
FieldGen value = BinaryNumeral.Private.Field(typeof(int), "value");
CodeGen g = BinaryNumeral.Public.Constructor().Parameter(typeof(int), "value");
{
g.Assign(value, g.Arg("value"));
}
g = BinaryNumeral.Public.ImplicitConversionFrom(typeof(int));
{
g.Return(exp.New(BinaryNumeral, g.Arg("value")));
}
g = BinaryNumeral.Public.ImplicitConversionTo(typeof(string));
{
g.Return("Conversion not yet implemented");
}
g = BinaryNumeral.Public.ExplicitConversionTo(typeof(int), "binary");
{
ITypeMapper typeMapper = ag.TypeMapper;
g.Return(g.Arg("binary").Field("value"));
}
}
TypeGen RomanNumeral = ag.Struct("RomanNumeral");
{
FieldGen value = RomanNumeral.Private.Field(typeof(int), "value");
CodeGen g = RomanNumeral.Public.Constructor().Parameter(typeof(int), "value");
{
g.Assign(value, g.Arg("value"));
}
g = RomanNumeral.Public.ImplicitConversionFrom(typeof(int));
{
g.Return(exp.New(RomanNumeral, g.Arg("value")));
}
g = RomanNumeral.Public.ImplicitConversionFrom(BinaryNumeral, "binary");
{
g.Return(exp.New(RomanNumeral, g.Arg("binary").Cast(typeof(int))));
}
g = RomanNumeral.Public.ExplicitConversionTo(typeof(int), "roman");
{
ITypeMapper typeMapper = ag.TypeMapper;
g.Return(g.Arg("roman").Field("value"));
}
g = RomanNumeral.Public.ImplicitConversionTo(typeof(string));
{
g.Return("Conversion not yet implemented");
}
}
TypeGen Test = ag.Class("Test");
{
CodeGen g = Test.Public.Static.Method(typeof(void), "Main");
{
var roman = g.Local(RomanNumeral);
g.Assign(roman, 10);
var binary = g.Local(BinaryNumeral);
// Perform a conversion from a RomanNumeral to a
// BinaryNumeral:
g.Assign(binary, roman.Cast(typeof(int)).Cast(BinaryNumeral));
// Performs a conversion from a BinaryNumeral to a RomanNumeral.
// No cast is required:
g.Assign(roman, binary);
g.WriteLine(binary.Cast(typeof(int)));
g.WriteLine(binary);
}
}
}
