public static void GenTypeAttributeTest(AssemblyGen ag)
{
TypeGen MyAttribute = ag.Public.Class("MyAttribute", typeof(Attribute))
.BeginAttribute <AttributeUsageAttribute>(AttributeTargets.Class).Set("AllowMultiple", true).End();
FieldGen testField = MyAttribute.Field <object>("testField")
.Attribute <DescriptionAttribute>("Test field");
PropertyGen testProperty = MyAttribute.Public.SimpleProperty(testField, "TestProperty")
.Attribute <ObsoleteAttribute>("Do not use this");
testProperty.Getter().Attribute <DescriptionAttribute>("Getter method");
testProperty.Getter().ReturnParameter.Attribute <DescriptionAttribute>("Getter return value");
testProperty.Setter().Attribute <DescriptionAttribute>("Setter method");
TypeGen tg = ag.Class("Test")
.BeginAttribute(MyAttribute).Set("TestProperty", 3).End()
.Attribute <DescriptionAttribute>("Test class");
tg.Static.Void("Main")
.BeginAttribute(MyAttribute).Set("TestProperty", 3).End();
TypeGen SimpleDelegate = ag.DelegateVoid("SimpleDelegate")
.Attribute <DescriptionAttribute>("Test delegate");
EventGen TestEvent = tg.Static.Event(SimpleDelegate, "TestEvent")
.Attribute <DescriptionAttribute>("Test event");
TestEvent.AddMethod().Attribute <DescriptionAttribute>("Event add method");
TestEvent.RemoveMethod().Attribute <DescriptionAttribute>("Event remove method");
}
// example based on the MSDN Operator Overloading Sample (complex.cs)
public static void GenComplex(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
ITypeMapper m = ag.TypeMapper;
TypeGen Complex = ag.Public.Struct("Complex");
{
FieldGen real = Complex.Public.Field(typeof(int), "real");
FieldGen imaginary = Complex.Public.Field(typeof(int), "imaginary");
CodeGen g = Complex.Public.Constructor()
.Parameter(typeof(int), "real")
.Parameter(typeof(int), "imaginary")
;
{
g.Assign(real, g.Arg("real"));
g.Assign(imaginary, g.Arg("imaginary"));
}
// Declare which operator to overload (+), the types
// that can be added (two Complex objects), and the
// return type (Complex):
g = Complex.Operator(Operator.Add, Complex, Complex, "c1", Complex, "c2");
{
var c1 = g.Arg("c1");
var c2 = g.Arg("c2");
g.Return(exp.New(Complex, c1.Field("real") + c2.Field("real"), c1.Field("imaginary") + c2.Field("imaginary")));
}
// Override the ToString method to display an complex number in the suitable format:
g = Complex.Public.Override.Method(typeof(string), "ToString");
{
g.Return(st.Invoke(typeof(string), "Format", "{0} + {1}i", real, imaginary));
}
g = Complex.Public.Static.Method(typeof(void), "Main");
{
var num1 = g.Local(exp.New(Complex, 2, 3));
var num2 = g.Local(exp.New(Complex, 3, 4));
// Add two Complex objects (num1 and num2) through the
// overloaded plus operator:
var sum = g.Local(num1 + num2);
// Print the numbers and the sum using the overriden ToString method:
g.WriteLine("First complex number: {0}", num1);
g.WriteLine("Second complex number: {0}", num2);
g.WriteLine("The sum of the two numbers: {0}", sum);
}
}
}
public override void OnInspectorGUI()
{
DrawDefaultInspector();
FieldGen gen = (FieldGen)target;
if (draw && GUILayout.Button("Draw Tensors"))
{
gen.drawTensors();
draw = false;
}
else if (!draw && GUILayout.Button("Hide Tensors"))
{
gen.hideTensors();
draw = true;
}
}
// example based on the MSDN Properties Sample (person.cs)
public static void GenPerson(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
TypeGen Person = ag.Class("Person");
{
FieldGen myName = Person.Private.Field(typeof(string), "myName", "N/A");
FieldGen myAge = Person.Private.Field(typeof(int), "myAge", 0);
// Declare a Name property of type string:
PropertyGen Name = Person.Public.SimpleProperty(myName, "Name");
// Declare an Age property of type int:
PropertyGen Age = Person.Public.SimpleProperty(myAge, "Age");
CodeGen g = Person.Public.Override.Method(typeof(string), "ToString");
{
g.Return("Name = " + Name + ", Age = " + Age);
}
g = Person.Public.Static.Method(typeof(void), "Main");
{
g.WriteLine("Simple Properties");
// Create a new Person object:
var person = g.Local(exp.New(Person));
// Print out the name and the age associated with the person:
g.WriteLine("Person details - {0}", person);
// Set some values on the person object:
ITypeMapper typeMapper = ag.TypeMapper;
g.Assign(person.Property("Name"), "Joe");
ITypeMapper typeMapper1 = ag.TypeMapper;
g.Assign(person.Property("Age"), 99);
g.WriteLine("Person details - {0}", person);
// Increment the Age property:
ITypeMapper typeMapper2 = ag.TypeMapper;
g.AssignAdd(person.Property("Age"), 1);
g.WriteLine("Person details - {0}", person);
}
}
}
public static void GenStaticCtor(AssemblyGen ag)
{
TypeGen Test = ag.Class("Test");
{
FieldGen a = Test.Static.Field(typeof(int), "a");
CodeGen g = Test.StaticConstructor();
{
g.WriteLine("Hello from .cctor!");
g.Assign(a, 3);
}
g = Test.Static.Method(typeof(void), "Main");
{
g.Invoke(typeof(System.Diagnostics.Debug), "Assert", a == 3);
g.WriteLine(".cctor works now...");
}
}
}
// 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 Properties Sample (person.cs)
public static void GenPerson(AssemblyGen ag)
{
TypeGen Person = ag.Class("Person");
{
FieldGen myName = Person.Private.Field <string>("myName", "N/A");
FieldGen myAge = Person.Private.Field <int>("myAge", 0);
// Declare a Name property of type string:
PropertyGen Name = Person.Public.SimpleProperty(myName, "Name");
// Declare an Age property of type int:
PropertyGen Age = Person.Public.SimpleProperty(myAge, "Age");
CodeGen g = Person.Public.Override.Method <string>("ToString");
{
g.Return("Name = " + Name + ", Age = " + Age);
}
g = Person.Public.Static.Void("Main");
{
g.WriteLine("Simple Properties");
// Create a new Person object:
Operand person = g.Local(Exp.New(Person));
// Print out the name and the age associated with the person:
g.WriteLine("Person details - {0}", person);
// Set some values on the person object:
g.Assign(person.Property("Name"), "Joe");
g.Assign(person.Property("Age"), 99);
g.WriteLine("Person details - {0}", person);
// Increment the Age property:
g.AssignAdd(person.Property("Age"), 1);
g.WriteLine("Person details - {0}", person);
}
}
}
// example based on the MSDN Structs Sample (struct1.cs)
public static void GenStruct1(AssemblyGen ag)
{
CodeGen g;
TypeGen SimpleStruct = ag.Struct("SimpleStruct");
{
FieldGen xval = SimpleStruct.Field <int>("xval");
PropertyGen X = SimpleStruct.Public.Property <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.Void("DisplayX");
{
g.WriteLine("The stored value is: {0}", xval);
}
}
TypeGen TestClass = ag.Class("TestClass");
{
g = TestClass.Public.Static.Void("Main");
{
Operand ss = g.Local(SimpleStruct);
g.InitObj(ss);
g.Assign(ss.Property("X"), 5);
g.Invoke(ss, "DisplayX");
}
}
}
void Awake()
{
field = this.gameObject.GetComponent <FieldGen>();
}
// example based on the MSDN Explicit Interface Implementation Sample (explicit.cs)
public static void GenExplicit2(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
ITypeMapper m = ag.TypeMapper;
// Declare the English units interface:
TypeGen IEnglishDimensions = ag.Interface("IEnglishDimensions");
{
IEnglishDimensions.Method(typeof(float), "Length");
IEnglishDimensions.Method(typeof(float), "Width");
}
// Declare the metric units interface:
TypeGen IMetricDimensions = ag.Interface("IMetricDimensions");
{
IMetricDimensions.Method(typeof(float), "Length");
IMetricDimensions.Method(typeof(float), "Width");
}
// Declare the "Box" class that implements the two interfaces:
// IEnglishDimensions and IMetricDimensions:
TypeGen Box = ag.Class("Box", typeof(object), IEnglishDimensions, IMetricDimensions);
{
FieldGen lengthInches = Box.Field(typeof(float), "lengthInches");
FieldGen widthInches = Box.Field(typeof(float), "widthInches");
CodeGen g = Box.Public.Constructor()
.Parameter(typeof(float), "length")
.Parameter(typeof(float), "width")
;
{
g.Assign(lengthInches, g.Arg("length"));
g.Assign(widthInches, g.Arg("width"));
}
// Explicitly implement the members of IEnglishDimensions:
g = Box.MethodImplementation(IEnglishDimensions, typeof(float), "Length");
{
g.Return(lengthInches);
}
g = Box.MethodImplementation(IEnglishDimensions, typeof(float), "Width");
{
g.Return(widthInches);
}
// Explicitly implement the members of IMetricDimensions:
g = Box.MethodImplementation(IMetricDimensions, typeof(float), "Length");
{
g.Return(lengthInches * 2.54f);
}
g = Box.MethodImplementation(IMetricDimensions, typeof(float), "Width");
{
g.Return(widthInches * 2.54f);
}
g = Box.Public.Static.Method(typeof(void), "Main");
{
// Declare a class instance "myBox":
var myBox = g.Local(exp.New(Box, 30.0f, 20.0f));
// Declare an instance of the English units interface:
var eDimensions = g.Local(myBox.Cast(IEnglishDimensions));
// Declare an instance of the metric units interface:
var mDimensions = g.Local(myBox.Cast(IMetricDimensions));
// Print dimensions in English units:
g.WriteLine("Length(in): {0}", eDimensions.Invoke("Length"));
g.WriteLine("Width (in): {0}", eDimensions.Invoke("Width"));
// Print dimensions in metric units:
g.WriteLine("Length(cm): {0}", mDimensions.Invoke("Length"));
g.WriteLine("Width (cm): {0}", mDimensions.Invoke("Width"));
}
}
}
// 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);
}
}
}
// example based on the MSDN Indexed Properties Sample (indexedproperty.cs)
public static void GenIndexedProperty(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
CodeGen g;
ITypeMapper m = ag.TypeMapper;
TypeGen Document = ag.Public.Class("Document");
{
FieldGen TextArray = Document.Private.Field(typeof(char[]), "TextArray"); // The text of the document.
// Type allowing the document to be viewed like an array of words:
TypeGen WordCollection = Document.Public.Class("WordCollection");
{
FieldGen document = WordCollection.ReadOnly.Field(Document, "document"); // The containing document
var document_TextArray = document.Field("TextArray", m); // example of a saved expression - it is always re-evaluated when used
g = WordCollection.Internal.Constructor().Parameter(Document, "d");
{
g.Assign(document, g.Arg("d"));
}
// Helper function -- search character array "text", starting at
// character "begin", for word number "wordCount." Returns false
// if there are less than wordCount words.Sets "start" and
// length" to the position and length of the word within text:
g = WordCollection.Private.Method(typeof(bool), "GetWord")
.Parameter(typeof(char[]), "text")
.Parameter(typeof(int), "begin")
.Parameter(typeof(int), "wordCount")
.Out.Parameter(typeof(int), "start")
.Out.Parameter(typeof(int), "length")
;
{
ContextualOperand text = g.Arg("text"), begin = g.Arg("begin"), wordCount = g.Arg("wordCount"),
start = g.Arg("start"), length = g.Arg("length");
var end = g.Local(text.ArrayLength());
var count = g.Local(0);
var inWord = g.Local(-1);
g.Assign(start, length.Assign(0));
var i = g.Local();
g.For(i.Assign(begin), i <= end, i.Increment());
{
var isLetter = g.Local(i < end && st.Invoke(typeof(char), "IsLetterOrDigit", text[i]));
g.If(inWord >= 0);
{
g.If(!isLetter);
{
g.If(count.PostIncrement() == wordCount);
{
g.Assign(start, inWord);
g.Assign(length, i - inWord);
g.Return(true);
}
g.End();
g.Assign(inWord, -1);
}
g.End();
}
g.Else();
{
g.If(isLetter);
{
g.Assign(inWord, i);
}
g.End();
}
g.End();
}
g.End();
g.Return(false);
}
// Indexer to get and set words of the containing document:
PropertyGen Item = WordCollection.Public.Indexer(typeof(string)).Index(typeof(int), "index");
{
g = Item.Getter();
{
var index = g.Arg("index");
var start = g.Local(0);
var length = g.Local(0);
g.If(g.This().Invoke("GetWord", document_TextArray, 0, index, start.Ref(), length.Ref()));
{
g.Return(exp.New(typeof(string), document_TextArray, start, length));
}
g.Else();
{
g.Throw(exp.New(typeof(IndexOutOfRangeException)));
}
g.End();
}
g = Item.Setter();
{
var index = g.Arg("index");
var value = g.PropertyValue();
var start = g.Local(0);
var length = g.Local(0);
g.If(g.This().Invoke("GetWord", document_TextArray, 0, index, start.Ref(), length.Ref()));
{
// Replace the word at start/length with the
// string "value":
g.If(length == value.Property("Length"));
{
g.Invoke(typeof(Array), "Copy", value.Invoke("ToCharArray"), 0,
document_TextArray, start, length);
}
g.Else();
{
var newText = g.Local(exp.NewArray(typeof(char),
document_TextArray.ArrayLength() + value.Property("Length") - length));
g.Invoke(typeof(Array), "Copy", document_TextArray, 0, newText,
0, start);
g.Invoke(typeof(Array), "Copy", value.Invoke("ToCharArray"), 0, newText,
start, value.Property("Length"));
g.Invoke(typeof(Array), "Copy", document_TextArray, start + length,
newText, start + value.Property("Length"),
document_TextArray.ArrayLength() - start
- length);
g.Assign(document_TextArray, newText);
}
g.End();
}
g.Else();
{
g.Throw(exp.New(typeof(IndexOutOfRangeException)));
}
g.End();
}
}
// Get the count of words in the containing document:
g = WordCollection.Public.Property(typeof(int), "Count").Getter();
{
ContextualOperand count = g.Local(0), start = g.Local(0), length = g.Local(0);
g.While(g.This().Invoke("GetWord", document_TextArray, start + length, 0, start.Ref(), length.Ref()));
{
g.Increment(count);
}
g.End();
g.Return(count);
}
}
// Type allowing the document to be viewed like an "array"
// of characters:
TypeGen CharacterCollection = Document.Public.Class("CharacterCollection");
{
FieldGen document = CharacterCollection.ReadOnly.Field(Document, "document"); // The containing document
var document_TextArray = document.Field("TextArray", m);
g = CharacterCollection.Internal.Constructor().Parameter(Document, "d");
{
g.Assign(document, g.Arg("d"));
}
// Indexer to get and set characters in the containing document:
PropertyGen Item = CharacterCollection.Public.Indexer(typeof(char)).Index(typeof(int), "index");
{
g = Item.Getter();
{
g.Return(document_TextArray[g.Arg("index")]);
}
g = Item.Setter();
{
g.Assign(document_TextArray[g.Arg("index")], g.PropertyValue());
}
}
// Get the count of characters in the containing document:
g = CharacterCollection.Public.Property(typeof(int), "Count").Getter();
{
g.Return(document_TextArray.ArrayLength());
}
}
// Because the types of the fields have indexers,
// these fields appear as "indexed properties":
FieldGen Words = Document.Public.ReadOnly.Field(WordCollection, "Words");
FieldGen Characters = Document.Public.ReadOnly.Field(CharacterCollection, "Characters");
g = Document.Public.Constructor().Parameter(typeof(string), "initialText");
{
g.Assign(TextArray, g.Arg("initialText").Invoke("ToCharArray"));
g.Assign(Words, exp.New(WordCollection, g.This()));
g.Assign(Characters, exp.New(CharacterCollection, g.This()));
}
g = Document.Public.Property(typeof(string), "Text").Getter();
{
g.Return(exp.New(typeof(string), TextArray));
}
}
TypeGen Test = ag.Class("Test");
{
g = Test.Public.Static.Method(typeof(void), "Main");
{
var d = g.Local(exp.New(Document, "peter piper picked a peck of pickled peppers. How many pickled peppers did peter piper pick?"));
// Change word "peter" to "penelope":
var i = g.Local();
g.For(i.Assign(0), i < d.Field("Words").Property("Count"), i.Increment());
{
g.If(d.Field("Words")[i] == "peter");
{
g.Assign(d.Field("Words")[i], "penelope");
}
g.End();
}
g.End();
// Change character "p" to "P"
g.For(i.Assign(0), i < d.Field("Characters").Property("Count"), i.Increment());
{
g.If(d.Field("Characters")[i] == 'p');
{
g.Assign(d.Field("Characters")[i], 'P');
}
g.End();
}
g.End();
g.WriteLine(d.Property("Text"));
}
}
}
public static void GenIndexer(AssemblyGen ag)
{
// Class to provide access to a large file
// as if it were a byte array.
TypeGen FileByteArray = ag.Public.Class("FileByteArray");
{
FieldGen stream = FileByteArray.Field <Stream>("stream"); // Holds the underlying stream
// used to access the file.
// Create a new FileByteArray encapsulating a particular file.
CodeGen g = FileByteArray.Public.Constructor().Parameter <string>("fileName");
{
g.Assign(stream, Exp.New <FileStream>(g.Arg("fileName"), FileMode.Open));
}
// Close the stream. This should be the last thing done
// when you are finished.
g = FileByteArray.Public.Void("Close");
{
g.Invoke(stream, "Close");
g.Assign(stream, null);
}
// Indexer to provide read/write access to the file.
PropertyGen Item = FileByteArray.Public.Indexer <byte>().Index <long>("index"); // long is a 64-bit integer
{
// Read one byte at offset index and return it.
g = Item.Getter();
{
Operand buffer = g.Local(Exp.NewArray <byte>(1));
g.Invoke(stream, "Seek", g.Arg("index"), SeekOrigin.Begin);
g.Invoke(stream, "Read", buffer, 0, 1);
g.Return(buffer[0]);
}
// Write one byte at offset index and return it.
g = Item.Setter();
{
Operand buffer = g.Local(Exp.NewInitializedArray <byte>(g.PropertyValue()));
g.Invoke(stream, "Seek", g.Arg("index"), SeekOrigin.Begin);
g.Invoke(stream, "Write", buffer, 0, 1);
}
}
// Get the total length of the file.
FileByteArray.Public.Property <long>("Length").Getter().GetCode()
.Return(stream.Invoke("Seek", 0, SeekOrigin.End));
}
// Demonstrate the FileByteArray class.
// Reverses the bytes in a file.
TypeGen Reverse = ag.Public.Class("Reverse");
{
CodeGen g = Reverse.Public.Static.Void("Main").Parameter <string[]>("args");
{
Operand args = g.Arg("args");
// Check for arguments.
g.If(args.ArrayLength() != 1);
{
g.WriteLine("Usage : Indexer <filename>");
g.Return();
}
g.End();
// Check for file existence
g.If(!Static.Invoke(typeof(File), "Exists", args[0]));
{
g.WriteLine("File " + args[0] + " not found.");
g.Return();
}
g.End();
Operand file = g.Local(Exp.New(FileByteArray, args[0]));
Operand len = g.Local(file.Property("Length"));
// Swap bytes in the file to reverse it.
Operand i = g.Local <long>();
g.For(i.Assign(0), i < len / 2, i.Increment());
{
Operand t = g.Local();
// Note that indexing the "file" variable invokes the
// indexer on the FileByteStream class, which reads
// and writes the bytes in the file.
g.Assign(t, file[i]);
g.Assign(file[i], file[len - i - 1]);
g.Assign(file[len - i - 1], t);
}
g.End();
g.Invoke(file, "Close");
}
}
}
/// <summary>
/// Iterate over all loaded mods and emit new types
/// </summary>
void Awake()
{
// Generate overloaded PQSMod types
AssemblyGen assembly = new AssemblyGen(Guid.NewGuid().ToString(),
new CompilerOptions {
OutputPath = Path.GetTempFileName()
});
List <Type> modTypes = GetModTypes();
foreach (Type modType in modTypes)
{
if (typeof(PQSMod).IsAssignableFrom(modType))
{
// Get the ModLoader type we want to extend
Type loaderType = modTypes.FirstOrDefault(t =>
t.BaseType != null && t.BaseType.FullName != null &&
t.BaseType.FullName.StartsWith("Kopernicus.Configuration.ModLoader.ModLoader") &&
t.BaseType.GetGenericArguments()[0] == modType);
if (loaderType == null)
{
continue;
}
// Generate the Mod Type
TypeGen modGen = assembly.Public.Class($"{modType.Name}Regional", modType);
{
FieldGen multiplierMap = modGen.Public.Field(typeof(MapSO), "multiplierMap");
FieldGen splitChannels = modGen.Public.Field(typeof(Boolean), "splitChannels");
FieldGen multiplier = modGen.Private.Field(typeof(Color), "multiplier");
FieldGen preBuildColor = modGen.Private.Field(typeof(Color), "preBuildColor");
FieldGen preBuildHeight = modGen.Private.Field(typeof(Double), "preBuildHeight");
// OnVertexBuildHeight
CodeGen onVertexBuild = modGen.Public.Override.Method(typeof(void), "OnVertexBuild")
.Parameter(typeof(PQS.VertexBuildData), "data");
{
ContextualOperand data = onVertexBuild.Arg("data");
onVertexBuild.Assign(multiplier, onVertexBuild.Local(multiplierMap.Invoke(
"GetPixelColor", new TypeMapper(),
data.Field("u"), data.Field("v"))));
onVertexBuild.If(!splitChannels);
{
onVertexBuild.Assign(multiplier.Field("a", new TypeMapper()),
multiplier.Field("r", new TypeMapper()));
}
onVertexBuild.End();
onVertexBuild.Assign(preBuildColor, data.Field("vertColor"));
onVertexBuild.Assign(preBuildHeight, data.Field("vertHeight"));
onVertexBuild.Invoke(onVertexBuild.Base(), "OnVertexBuild", data);
onVertexBuild.Assign(data.Field("vertColor"),
assembly.StaticFactory.Invoke(typeof(Color), "Lerp", preBuildColor,
data.Field("vertColor"), multiplier.Field("a", new TypeMapper())));
onVertexBuild.Assign(data.Field("vertHeight"),
assembly.StaticFactory.Invoke(typeof(UtilMath), "Lerp", preBuildHeight,
data.Field("vertHeight"), multiplier.Field("r", new TypeMapper())));
}
// OnVertexBuildHeight
CodeGen onVertexBuildHeight = modGen.Public.Override.Method(typeof(void), "OnVertexBuildHeight")
.Parameter(typeof(PQS.VertexBuildData), "data");
{
ContextualOperand data = onVertexBuildHeight.Arg("data");
onVertexBuildHeight.Assign(multiplier, onVertexBuildHeight.Local(multiplierMap.Invoke(
"GetPixelColor", new TypeMapper(),
data.Field("u"), data.Field("v"))));
onVertexBuildHeight.If(!splitChannels);
{
onVertexBuildHeight.Assign(multiplier.Field("a", new TypeMapper()),
multiplier.Field("r", new TypeMapper()));
}
onVertexBuildHeight.End();
onVertexBuildHeight.Assign(preBuildColor, data.Field("vertColor"));
onVertexBuildHeight.Assign(preBuildHeight, data.Field("vertHeight"));
onVertexBuildHeight.Invoke(onVertexBuildHeight.Base(), "OnVertexBuildHeight", data);
onVertexBuildHeight.Assign(data.Field("vertColor"),
assembly.StaticFactory.Invoke(typeof(Color), "Lerp", preBuildColor,
data.Field("vertColor"), multiplier.Field("a", new TypeMapper())));
onVertexBuildHeight.Assign(data.Field("vertHeight"),
assembly.StaticFactory.Invoke(typeof(UtilMath), "Lerp", preBuildHeight,
data.Field("vertHeight"), multiplier.Field("r", new TypeMapper())));
}
}
// Generate the Loader Type
Type modLoader = typeof(ModLoader <>).MakeGenericType(modGen);
TypeGen loaderGen =
assembly.Public.Class($"{modType.Name.Replace("PQSMod_", "").Replace("PQS", "")}Regional",
modLoader);
{
PropertyGen multiplierMap = loaderGen.Public.Property(typeof(MapSOParserRGB <MapSO>), "multiplierMap")
.Attribute(typeof(ParserTarget), "multiplierMap");
{
CodeGen getter = multiplierMap.Getter();
{
getter.Return(getter.Base().Property("Mod").Field("multiplierMap"));
}
CodeGen setter = multiplierMap.Setter();
{
setter.Assign(setter.Base().Property("Mod").Field("multiplierMap"),
setter.PropertyValue());
}
}
PropertyGen splitChannels = loaderGen.Public.Property(typeof(NumericParser <Boolean>), "splitChannels")
.Attribute(typeof(ParserTarget), "splitChannels");
{
CodeGen getter = splitChannels.Getter();
{
getter.Return(getter.Base().Property("Mod").Field("splitChannels"));
}
CodeGen setter = splitChannels.Setter();
{
setter.Assign(setter.Base().Property("Mod").Field("splitChannels"),
setter.PropertyValue());
}
}
FieldGen loader = loaderGen.Public.Field(loaderType, "loader")
.BeginAttribute(typeof(ParserTarget), "Mod").SetField("AllowMerge", true).End();
CodeGen create_PQS = loaderGen.Public.Override.Method(typeof(void), "Create")
.Parameter(typeof(PQS), "pqsVersion");
{
ContextualOperand pqsVersion = create_PQS.Arg("pqsVersion");
create_PQS.Invoke(create_PQS.Base(), "Create", pqsVersion);
create_PQS.Assign(loader, assembly.ExpressionFactory.New(loaderType));
create_PQS.Invoke(loader, "Create", create_PQS.Base().Property("Mod"), pqsVersion);
}
CodeGen create_Mod_PQS = loaderGen.Public.Override.Method(typeof(void), "Create")
.Parameter(modGen, "_mod")
.Parameter(typeof(PQS), "pqsVersion");
{
ContextualOperand _mod = create_Mod_PQS.Arg("_mod");
ContextualOperand pqsVersion = create_Mod_PQS.Arg("pqsVersion");
create_Mod_PQS.Invoke(create_Mod_PQS.Base(), "Create", _mod, pqsVersion);
create_Mod_PQS.Assign(loader, assembly.ExpressionFactory.New(loaderType));
create_Mod_PQS.Invoke(loader, "Create", create_Mod_PQS.Base().Property("Mod"), pqsVersion);
}
}
}
}
assembly.Save();
// Hacking into my own mod. Oh well.
modTypes.AddRange(assembly.GetAssembly().GetTypes());
typeof(Parser).GetField("_modTypes", BindingFlags.NonPublic | BindingFlags.Static)
?.SetValue(null, modTypes);
}
// example based on the MSDN User-Defined Conversions Sample (structconversion.cs)
public static void GenStructConversion(AssemblyGen ag)
{
TypeGen BinaryNumeral = ag.Struct("BinaryNumeral");
{
FieldGen value = BinaryNumeral.Private.Field <int>("value");
CodeGen g = BinaryNumeral.Public.Constructor().Parameter <int>("value");
{
g.Assign(value, g.Arg("value"));
}
g = BinaryNumeral.Public.ImplicitConversionFrom <int>();
{
g.Return(Exp.New(BinaryNumeral, g.Arg("value")));
}
g = BinaryNumeral.Public.ImplicitConversionTo <string>();
{
g.Return("Conversion not yet implemented");
}
g = BinaryNumeral.Public.ExplicitConversionTo <int>("binary");
{
g.Return(g.Arg("binary").Field("value"));
}
}
TypeGen RomanNumeral = ag.Struct("RomanNumeral");
{
FieldGen value = RomanNumeral.Private.Field <int>("value");
CodeGen g = RomanNumeral.Public.Constructor().Parameter <int>("value");
{
g.Assign(value, g.Arg("value"));
}
g = RomanNumeral.Public.ImplicitConversionFrom <int>();
{
g.Return(Exp.New(RomanNumeral, g.Arg("value")));
}
g = RomanNumeral.Public.ImplicitConversionFrom(BinaryNumeral, "binary");
{
g.Return(Exp.New(RomanNumeral, g.Arg("binary").Cast <int>()));
}
g = RomanNumeral.Public.ExplicitConversionTo <int>("roman");
{
g.Return(g.Arg("roman").Field("value"));
}
g = RomanNumeral.Public.ImplicitConversionTo <string>();
{
g.Return("Conversion not yet implemented");
}
}
TypeGen Test = ag.Class("Test");
{
CodeGen g = Test.Public.Static.Void("Main");
{
Operand roman = g.Local(RomanNumeral);
g.Assign(roman, 10);
Operand binary = g.Local(BinaryNumeral);
// Perform a conversion from a RomanNumeral to a
// BinaryNumeral:
g.Assign(binary, roman.Cast <int>().Cast(BinaryNumeral));
// Performs a conversion from a BinaryNumeral to a RomanNumeral.
// No cast is required:
g.Assign(roman, binary);
g.WriteLine(binary.Cast <int>());
g.WriteLine(binary);
}
}
}
// example based on the MSDN Delegates Sample (bookstore.cs)
public static void GenBookstore(AssemblyGen ag)
{
TypeGen Book, ProcessBookDelegate, BookDB;
// A set of classes for handling a bookstore:
using (ag.Namespace("Bookstore"))
{
// Describes a book in the book list:
Book = ag.Public.Struct("Book");
{
FieldGen Title = Book.Public.Field <string>("Title"); // Title of the book.
FieldGen Author = Book.Public.Field <string>("Author"); // Author of the book.
FieldGen Price = Book.Public.Field <decimal>("Price"); // Price of the book.
FieldGen Paperback = Book.Public.Field <bool>("Paperback"); // Is it paperback?
CodeGen g = Book.Public.Constructor()
.Parameter <string>("title")
.Parameter <string>("author")
.Parameter <decimal>("price")
.Parameter <bool>("paperBack");
{
g.Assign(Title, g.Arg("title"));
g.Assign(Author, g.Arg("author"));
g.Assign(Price, g.Arg("price"));
g.Assign(Paperback, g.Arg("paperBack"));
}
}
// Declare a delegate type for processing a book:
ProcessBookDelegate = ag.Public.DelegateVoid("ProcessBookDelegate").Parameter(Book, "book");
// Maintains a book database.
BookDB = ag.Public.Class("BookDB");
{
// List of all books in the database:
FieldGen list = BookDB.Field <ArrayList>("list", Exp.New <ArrayList>());
// Add a book to the database:
CodeGen g = BookDB.Public.Void("AddBook")
.Parameter <string>("title")
.Parameter <string>("author")
.Parameter <decimal>("price")
.Parameter <bool>("paperBack");
{
g.Invoke(list, "Add", Exp.New(Book, g.Arg("title"), g.Arg("author"), g.Arg("price"), g.Arg("paperBack")));
}
// Call a passed-in delegate on each paperback book to process it:
g = BookDB.Public.Void("ProcessPaperbackBooks").Parameter(ProcessBookDelegate, "processBook");
{
Operand b = g.ForEach(Book, list);
{
g.If(b.Field("Paperback"));
{
g.InvokeDelegate(g.Arg("processBook"), b);
}
g.End();
}
g.End();
}
}
}
// Using the Bookstore classes:
using (ag.Namespace("BookTestClient"))
{
// Class to total and average prices of books:
TypeGen PriceTotaller = ag.Class("PriceTotaller");
{
FieldGen countBooks = PriceTotaller.Field <int>("countBooks", 0);
FieldGen priceBooks = PriceTotaller.Field <decimal>("priceBooks", 0.0m);
CodeGen g = PriceTotaller.Internal.Void("AddBookToTotal").Parameter(Book, "book");
{
g.AssignAdd(countBooks, 1);
g.AssignAdd(priceBooks, g.Arg("book").Field("Price"));
}
g = PriceTotaller.Internal.Method <decimal>("AveragePrice");
{
g.Return(priceBooks / countBooks);
}
}
// Class to test the book database:
TypeGen Test = ag.Class("Test");
{
// Print the title of the book.
CodeGen g = Test.Static.Void("PrintTitle").Parameter(Book, "book");
{
g.WriteLine(" {0}", g.Arg("book").Field("Title"));
}
// Initialize the book database with some test books:
g = Test.Static.Void("AddBooks").Parameter(BookDB, "bookDB");
{
Operand bookDB = g.Arg("bookDB");
g.Invoke(bookDB, "AddBook", "The C Programming Language",
"Brian W. Kernighan and Dennis M. Ritchie", 19.95m, true);
g.Invoke(bookDB, "AddBook", "The Unicode Standard 2.0",
"The Unicode Consortium", 39.95m, true);
g.Invoke(bookDB, "AddBook", "The MS-DOS Encyclopedia",
"Ray Duncan", 129.95m, false);
g.Invoke(bookDB, "AddBook", "Dogbert's Clues for the Clueless",
"Scott Adams", 12.00m, true);
}
// Execution starts here.
g = Test.Static.Void("Main");
{
Operand bookDB = g.Local(Exp.New(BookDB));
// Initialize the database with some books:
g.Invoke(Test, "AddBooks", bookDB);
// Print all the titles of paperbacks:
g.WriteLine("Paperback Book Titles:");
// Create a new delegate object associated with the static
// method Test.PrintTitle:
g.Invoke(bookDB, "ProcessPaperbackBooks", Exp.NewDelegate(ProcessBookDelegate, Test, "PrintTitle"));
// Get the average price of a paperback by using
// a PriceTotaller object:
Operand totaller = g.Local(Exp.New(PriceTotaller));
// Create a new delegate object associated with the nonstatic
// method AddBookToTotal on the object totaller:
g.Invoke(bookDB, "ProcessPaperbackBooks", Exp.NewDelegate(ProcessBookDelegate, totaller, "AddBookToTotal"));
g.WriteLine("Average Paperback Book Price: ${0:#.##}",
totaller.Invoke("AveragePrice"));
}
}
}
}
/// <summary>
/// Create a wrapper class for a generic interface with more general type parameters than the wrapped interface.
/// Downcasts to the correct more specific type are generated where necessary.
/// This of course breaks type safety, and only calls to the class with the correct orginal types will work.
/// Incorrect calls will throw <see cref = "InvalidCastException" />.
/// </summary>
/// <remarks>
/// This is useful during reflection, when you don't want to know about specific types, but you can guarantee
/// that a certain call will always be done with objects of the correct type.
/// TODO: This non-generic method is only needed since RunSharp can't call generic methods, needed to generate wrappers recursively.
/// TODO: Possibly Castle DynamicProxy could replace this if it allows creating 'non-matching' proxies and thus support the downcasting.
/// </remarks>
/// <param name = "typeToCreate">The less-specific generic type of the wrapper which will be generated.</param>
/// <param name = "o">The object to wrap, which should implement the desired interface, with arbitrary type parameters.</param>
/// <returns>An instance of the specified type which wraps the given object.</returns>
public static object CreateGenericInterfaceWrapper(Type typeToCreate, object o)
{
Contract.Requires(o.GetType().IsOfGenericType(typeToCreate.GetGenericTypeDefinition()));
Contract.Requires(typeToCreate.IsInterface);
Type typeToCreateGeneric = typeToCreate.GetGenericTypeDefinition();
Type innerType = o.GetType();
Type innerMatchingType = innerType.GetMatchingGenericType(typeToCreateGeneric);
// Implement passed type and redirect all public calls to inner instance.
var assembly = new AssemblyGen("Whathecode.System.RunSharp");
TypeGen type = assembly.Public.Class("Wrapped" + typeToCreate.Name, typeof(object), typeToCreate);
{
const string inner = "inner";
FieldGen innerInstance = type.Private.Field(innerType, "_innerInstance");
FieldGen returnCached = type.Private.Field(typeof(Dictionary <int, object>), "_returnCached");
FieldGen returnWrappers = type.Private.Field(typeof(Dictionary <int, object>), "_returnWrappers");
// Create constructor which takes the wrapped instance as an argument.
ConstructorGen constructor = type.Public.Constructor();
{
constructor.Parameter(innerType, inner);
CodeGen code = constructor.GetCode();
{
code.Assign(innerInstance, code.Arg(inner));
code.Assign(returnCached, Exp.New(typeof(Dictionary <int, object>)));
code.Assign(returnWrappers, Exp.New(typeof(Dictionary <int, object>)));
}
}
// Create methods.
int methodCount = 0;
MethodInfo[] innerMethods = innerMatchingType.GetFlattenedInterfaceMethods(ReflectionHelper.FlattenedInstanceMembers).ToArray();
MethodInfo[] toCreateMethods = typeToCreate.GetFlattenedInterfaceMethods(ReflectionHelper.FlattenedInstanceMembers).ToArray();
MethodInfo[] genericMethods = typeToCreateGeneric.GetFlattenedInterfaceMethods(ReflectionHelper.FlattenedInstanceMembers).ToArray();
foreach (var method in innerMethods
.Zip(toCreateMethods, genericMethods,
(matching, toCreate, generic) => new
{
Id = methodCount++,
Matching = matching,
ToCreate = toCreate,
Generic = generic
})
.Where(z => z.Matching.IsPublic || z.Matching.IsFamily))
{
// TODO: Not quite certain why override is required for extended interfaces (DeclaringType != typeTocreate),
// but this seems to work.
MethodInfo toCreate = method.ToCreate;
MethodGen methodGen = toCreate.DeclaringType == typeToCreate
? type.MethodImplementation(typeToCreate, toCreate.ReturnType, toCreate.Name)
: type.Public.Override.Method(toCreate.ReturnType, toCreate.Name);
{
ParameterInfo[] toCreateParameters = toCreate.GetParameters();
var parameters = toCreateParameters
.Select(p =>
{
var info = methodGen.BeginParameter(p.ParameterType, p.Name);
info.End();
return(info);
}).ToArray();
CodeGen code = methodGen.GetCode();
{
// Cast arguments to the type of the inner instance.
Operand[] args = parameters.Select(p => code.Arg(p.Name)).ToArray();
Operand[] castArgs = { };
if (args.Length > 0)
{
Type[] parameterTypes = method.Matching.GetParameters().Select(p => p.ParameterType).ToArray();
// TODO: When searching for generic methods, GetMethod returns null. http://stackoverflow.com/questions/4035719/getmethod-for-generic-method
// Even when the correct method is found through custom filtering, RunSharp does not seem to be able to create generic methods yet.
MethodInfo methodToCall
= innerType.GetMethod(toCreate.Name, ReflectionHelper.FlattenedInstanceMembers, parameterTypes);
castArgs = methodToCall.GetParameters()
.Select((p, index) => args[index].Cast(typeof(object)).Cast(p.ParameterType)).ToArray();
}
// Call inner instance and return value when needed.
if (toCreate.ReturnType != typeof(void))
{
Operand result = innerInstance.Invoke(toCreate.Name, castArgs);
// Wrappers will recursively need to be created for generic return types.
Type genericReturnType = method.Generic.ReturnType;
if (genericReturnType.IsGenericType && genericReturnType.ContainsGenericParameters && genericReturnType.IsInterface)
{
// Check whether a new result is returned.
Operand innerCached = code.Local(typeof(object));
code.If(returnCached.Invoke("TryGetValue", method.Id, innerCached.Ref()));
{
code.If((innerCached == result).LogicalNot());
{
code.Invoke(returnWrappers, "Remove", method.Id);
code.Invoke(returnCached, "Remove", method.Id);
code.Invoke(returnCached, "Add", method.Id, result);
}
code.End();
}
code.Else();
{
code.Invoke(returnCached, "Add", method.Id, result);
}
code.End();
// Check whether a wrapper needs to be generated.
Operand wrappedCached = code.Local(typeof(object));
code.If(returnWrappers.Invoke("TryGetValue", method.Id, wrappedCached.Ref()).LogicalNot());
{
Operand proxied = Static.Invoke(typeof(Proxy), "CreateGenericInterfaceWrapper", toCreate.ReturnType, result);
code.Assign(wrappedCached, proxied);
code.Invoke(returnWrappers, "Add", method.Id, wrappedCached);
}
code.End();
code.Return(wrappedCached.Cast(toCreate.ReturnType));
}
else
{
// A simple cast will work.
// TODO: Throw proper exception when this is known to fail. E.g. generic type which is not an interface?
code.Return(result.Cast(toCreate.ReturnType));
}
}
else
{
code.Invoke(innerInstance, toCreate.Name, castArgs);
}
}
}
}
}
Type wrapperType = type.GetCompletedType(true);
return(Activator.CreateInstance(wrapperType, new[] { o }));
}
// example based on the MSDN Operator Overloading Sample (dbbool.cs)
public static void GenDbBool(AssemblyGen ag)
{
TypeGen DBBool = ag.Public.Struct("DBBool");
{
// Private field that stores -1, 0, 1 for dbFalse, dbNull, dbTrue:
FieldGen value = DBBool.Field <int>("value");
// Private constructor. The value parameter must be -1, 0, or 1:
CodeGen g = DBBool.Constructor().Parameter <int>("value");
{
g.Assign(value, g.Arg("value"));
}
// The three possible DBBool values:
FieldGen dbNull = DBBool.Public.Static.ReadOnly.Field(DBBool, "dbNull", Exp.New(DBBool, 0));
FieldGen dbFalse = DBBool.Public.Static.ReadOnly.Field(DBBool, "dbFalse", Exp.New(DBBool, -1));
FieldGen dbTrue = DBBool.Public.Static.ReadOnly.Field(DBBool, "dbTrue", Exp.New(DBBool, 1));
// Implicit conversion from bool to DBBool. Maps true to
// DBBool.dbTrue and false to DBBool.dbFalse:
g = DBBool.ImplicitConversionFrom <bool>("x");
{
Operand x = g.Arg("x");
g.Return(x.Conditional(dbTrue, dbFalse));
}
// Explicit conversion from DBBool to bool. Throws an
// exception if the given DBBool is dbNull, otherwise returns
// true or false:
g = DBBool.ExplicitConversionTo <bool>("x");
{
Operand x = g.Arg("x");
g.If(x.Field("value") == 0);
{
g.Throw(Exp.New(typeof(InvalidOperationException)));
}
g.End();
g.Return(x.Field("value") > 0);
}
// Equality operator. Returns dbNull if either operand is dbNull,
// otherwise returns dbTrue or dbFalse:
g = DBBool.Operator(Operator.Equality, DBBool, DBBool, "x", DBBool, "y");
{
Operand x = g.Arg("x"), y = g.Arg("y");
g.If(x.Field("value") == 0 || y.Field("value") == 0);
{
g.Return(dbNull);
}
g.End();
g.Return((x.Field("value") == y.Field("value")).Conditional(dbTrue, dbFalse));
}
// Inequality operator. Returns dbNull if either operand is
// dbNull, otherwise returns dbTrue or dbFalse:
g = DBBool.Operator(Operator.Inequality, DBBool, DBBool, "x", DBBool, "y");
{
Operand x = g.Arg("x"), y = g.Arg("y");
g.If(x.Field("value") == 0 || y.Field("value") == 0);
{
g.Return(dbNull);
}
g.End();
g.Return((x.Field("value") != y.Field("value")).Conditional(dbTrue, dbFalse));
}
// Logical negation operator. Returns dbTrue if the operand is
// dbFalse, dbNull if the operand is dbNull, or dbFalse if the
// operand is dbTrue:
g = DBBool.Operator(Operator.LogicalNot, DBBool, DBBool, "x");
{
Operand x = g.Arg("x");
g.Return(Exp.New(DBBool, -x.Field("value")));
}
// Logical AND operator. Returns dbFalse if either operand is
// dbFalse, dbNull if either operand is dbNull, otherwise dbTrue:
g = DBBool.Operator(Operator.And, DBBool, DBBool, "x", DBBool, "y");
{
Operand x = g.Arg("x"), y = g.Arg("y");
g.Return(Exp.New(DBBool, (x.Field("value") < y.Field("value")).Conditional(x.Field("value"), y.Field("value"))));
}
// Logical OR operator. Returns dbTrue if either operand is
// dbTrue, dbNull if either operand is dbNull, otherwise dbFalse:
g = DBBool.Operator(Operator.Or, DBBool, DBBool, "x", DBBool, "y");
{
Operand x = g.Arg("x"), y = g.Arg("y");
g.Return(Exp.New(DBBool, (x.Field("value") > y.Field("value")).Conditional(x.Field("value"), y.Field("value"))));
}
// Definitely true operator. Returns true if the operand is
// dbTrue, false otherwise:
g = DBBool.Operator(Operator.True, typeof(bool), DBBool, "x");
{
Operand x = g.Arg("x");
g.Return(x.Field("value") > 0);
}
// Definitely false operator. Returns true if the operand is
// dbFalse, false otherwise:
g = DBBool.Operator(Operator.False, typeof(bool), DBBool, "x");
{
Operand x = g.Arg("x");
g.Return(x.Field("value") < 0);
}
// Overload the conversion from DBBool to string:
g = DBBool.ImplicitConversionTo(typeof(string), "x");
{
Operand x = g.Arg("x");
g.Return((x.Field("value") > 0).Conditional("dbTrue",
(x.Field("value") < 0).Conditional("dbFalse",
"dbNull")));
}
// Override the Object.Equals(object o) method:
g = DBBool.Public.Override.Method <bool>("Equals").Parameter <object>("o");
{
g.Try();
{
g.Return((g.This() == g.Arg("o").Cast(DBBool)).Cast <bool>());
}
g.CatchAll();
{
g.Return(false);
}
g.End();
}
// Override the Object.GetHashCode() method:
g = DBBool.Public.Override.Method <int>("GetHashCode");
{
g.Return(value);
}
// Override the ToString method to convert DBBool to a string:
g = DBBool.Public.Override.Method <string>("ToString");
{
g.Switch(value);
{
g.Case(-1);
g.Return("DBBool.False");
g.Case(0);
g.Return("DBBool.Null");
g.Case(1);
g.Return("DBBool.True");
g.DefaultCase();
g.Throw(Exp.New <InvalidOperationException>());
}
g.End();
}
}
TypeGen Test = ag.Class("Test");
{
CodeGen g = Test.Static.Void("Main");
{
Operand a = g.Local(DBBool), b = g.Local(DBBool);
g.Assign(a, Static.Field(DBBool, "dbTrue"));
g.Assign(b, Static.Field(DBBool, "dbNull"));
g.WriteLine("!{0} = {1}", a, !a);
g.WriteLine("!{0} = {1}", b, !b);
g.WriteLine("{0} & {1} = {2}", a, b, a & b);
g.WriteLine("{0} | {1} = {2}", a, b, a | b);
// Invoke the true operator to determine the Boolean
// value of the DBBool variable:
g.If(b);
{
g.WriteLine("b is definitely true");
}
g.Else();
{
g.WriteLine("b is not definitely true");
}
g.End();
}
}
}
// example based on the MSDN Delegates Sample (bookstore.cs)
public static void GenBookstore(AssemblyGen ag)
{
var st = ag.StaticFactory;
var exp = ag.ExpressionFactory;
ITypeMapper m = ag.TypeMapper;
TypeGen book, processBookDelegate, BookDBLocal;
// A set of classes for handling a bookstore:
using (ag.Namespace("Bookstore"))
{
// Describes a book in the book list:
book = ag.Public.Struct("Book");
{
FieldGen title = book.Public.Field(typeof(string), "Title"); // Title of the book.
FieldGen author = book.Public.Field(typeof(string), "Author"); // Author of the book.
FieldGen price = book.Public.Field(typeof(decimal), "Price"); // Price of the book.
FieldGen paperback = book.Public.Field(typeof(bool), "Paperback"); // Is it paperback?
CodeGen g = book.Public.Constructor()
.Parameter(typeof(string), "title")
.Parameter(typeof(string), "author")
.Parameter(typeof(decimal), "price")
.Parameter(typeof(bool), "paperBack");
{
g.Assign(title, g.Arg("title"));
g.Assign(author, g.Arg("author"));
g.Assign(price, g.Arg("price"));
g.Assign(paperback, g.Arg("paperBack"));
}
}
// Declare a delegate type for processing a book:
processBookDelegate = ag.Public.Delegate(typeof(void), "ProcessBookDelegate").Parameter(book, "book");
// Maintains a book database.
BookDBLocal = ag.Public.Class("BookDB");
{
// List of all books in the database:
FieldGen list = BookDBLocal.Field(typeof(ArrayList), "list", exp.New(typeof(ArrayList)));
// Add a book to the database:
CodeGen g = BookDBLocal.Public.Method(typeof(void), "AddBook")
.Parameter(typeof(string), "title")
.Parameter(typeof(string), "author")
.Parameter(typeof(decimal), "price")
.Parameter(typeof(bool), "paperBack")
;
{
g.Invoke(list, "Add", exp.New(book, g.Arg("title"), g.Arg("author"), g.Arg("price"), g.Arg("paperBack")));
}
// Call a passed-in delegate on each paperback book to process it:
g = BookDBLocal.Public.Method(typeof(void), "ProcessPaperbackBooks").Parameter(processBookDelegate, "processBook");
{
var b = g.ForEach(book, list);
{
g.If(b.Field("Paperback"));
{
g.InvokeDelegate(g.Arg("processBook"), b);
}
g.End();
}
g.End();
}
}
}
// Using the Bookstore classes:
using (ag.Namespace("BookTestClient"))
{
// Class to total and average prices of books:
TypeGen priceTotaller = ag.Class("PriceTotaller");
{
FieldGen countBooks = priceTotaller.Field(typeof(int), "countBooks", 0);
FieldGen priceBooks = priceTotaller.Field(typeof(decimal), "priceBooks", 0.0m);
CodeGen g = priceTotaller.Internal.Method(typeof(void), "AddBookToTotal").Parameter(book, "book");
{
g.AssignAdd(countBooks, 1);
g.AssignAdd(priceBooks, g.Arg("book").Field("Price"));
}
g = priceTotaller.Internal.Method(typeof(decimal), "AveragePrice");
{
g.Return(priceBooks / countBooks);
}
}
// Class to test the book database:
TypeGen test = ag.Class("Test");
{
// Print the title of the book.
CodeGen g = test.Static.Method(typeof(void), "PrintTitle").Parameter(book, "book");
{
g.WriteLine(" {0}", g.Arg("book").Field("Title"));
}
// Initialize the book database with some test books:
g = test.Static.Method(typeof(void), "AddBooks").Parameter(BookDBLocal, "bookDB");
{
var bookDb = g.Arg("bookDB");
g.Invoke(bookDb, "AddBook", "The C Programming Language",
"Brian W. Kernighan and Dennis M. Ritchie", 19.95m, true);
g.Invoke(bookDb, "AddBook", "The Unicode Standard 2.0",
"The Unicode Consortium", 39.95m, true);
g.Invoke(bookDb, "AddBook", "The MS-DOS Encyclopedia",
"Ray Duncan", 129.95m, false);
g.Invoke(bookDb, "AddBook", "Dogbert's Clues for the Clueless",
"Scott Adams", 12.00m, true);
}
// Execution starts here.
g = test.Public.Static.Method(typeof(void), "Main");
{
var bookDb = g.Local(exp.New(BookDBLocal));
// Initialize the database with some books:
g.Invoke(test, "AddBooks", bookDb);
// Print all the titles of paperbacks:
g.WriteLine("Paperback Book Titles:");
// Create a new delegate object associated with the static
// method Test.PrintTitle:
g.Invoke(bookDb, "ProcessPaperbackBooks", (Operand)exp.NewDelegate(processBookDelegate, test, "PrintTitle"));
// Get the average price of a paperback by using
// a PriceTotaller object:
var totaller = g.Local(exp.New(priceTotaller));
// Create a new delegate object associated with the nonstatic
// method AddBookToTotal on the object totaller:
g.Invoke(bookDb, "ProcessPaperbackBooks", (Operand)exp.NewDelegate(processBookDelegate, totaller, "AddBookToTotal"));
g.WriteLine("Average Paperback Book Price: ${0:#.##}",
totaller.Invoke("AveragePrice"));
}
}
}
}
// example based on the MSDN Collection Classes Sample (tokens2.cs)
public static void GenTokens2(AssemblyGen ag)
{
TypeGen Tokens = ag.Public.Class("Tokens", typeof(object), typeof(IEnumerable));
{
FieldGen elements = Tokens.Private.Field(typeof(string[]), "elements");
CodeGen g = Tokens.Constructor()
.Parameter(typeof(string), "source")
.Parameter(typeof(char[]), "delimiters")
;
{
g.Assign(elements, g.Arg("source").Invoke("Split", g.Arg("delimiters")));
}
// Inner class implements IEnumerator interface:
TypeGen TokenEnumerator = Tokens.Public.Class("TokenEnumerator", typeof(object), typeof(IEnumerator));
{
FieldGen position = TokenEnumerator.Field(typeof(int), "position", -1);
FieldGen t = TokenEnumerator.Field(Tokens, "t");
g = TokenEnumerator.Public.Constructor().Parameter(Tokens, "tokens");
{
g.Assign(t, g.Arg("tokens"));
}
g = TokenEnumerator.Public.Method(typeof(bool), "MoveNext");
{
g.If(position < t.Field("elements").ArrayLength() - 1);
{
g.Increment(position);
g.Return(true);
}
g.Else();
{
g.Return(false);
}
g.End();
}
g = TokenEnumerator.Public.Method(typeof(void), "Reset");
{
g.Assign(position, -1);
}
// non-IEnumerator version: type-safe
g = TokenEnumerator.Public.Property(typeof(string), "Current").Getter();
{
g.Return(t.Field("elements")[position]);
}
// IEnumerator version: returns object
g = TokenEnumerator.Public.PropertyImplementation(typeof(IEnumerator), typeof(object), "Current").Getter();
{
g.Return(t.Field("elements")[position]);
}
}
// IEnumerable Interface Implementation:
// non-IEnumerable version
g = Tokens.Public.Method(TokenEnumerator, "GetEnumerator");
{
g.Return(Exp.New(TokenEnumerator, g.This()));
}
// IEnumerable version
g = Tokens.Public.MethodImplementation(typeof(IEnumerable), typeof(IEnumerator), "GetEnumerator");
{
g.Return(Exp.New(TokenEnumerator, g.This()).Cast(typeof(IEnumerator)));
}
// Test Tokens, TokenEnumerator
g = Tokens.Static.Method(typeof(void), "Main");
{
Operand f = g.Local(Exp.New(Tokens, "This is a well-done program.",
Exp.NewInitializedArray(typeof(char), ' ', '-')));
Operand item = g.ForEach(typeof(string), f); // try changing string to int
{
g.WriteLine(item);
}
g.End();
}
}
}
// example based on the MSDN Events Sample (events1.cs)
public static void GenEvents1(AssemblyGen ag)
{
TypeGen ChangedEventHandler, ListWithChangedEvent;
using (ag.Namespace("MyCollections"))
{
// A delegate type for hooking up change notifications.
ChangedEventHandler = ag.Delegate(typeof(void), "ChangedEventHandler").Parameter(typeof(object), "sender").Parameter(typeof(EventArgs), "e");
// A class that works just like ArrayList, but sends event
// notifications whenever the list changes.
ListWithChangedEvent = ag.Public.Class("ListWithChangedEvent", typeof(ArrayList));
{
// An event that clients can use to be notified whenever the
// elements of the list change.
EventGen Changed = ListWithChangedEvent.Public.Event(ChangedEventHandler, "Changed");
// Invoke the Changed event; called whenever list changes
CodeGen g = ListWithChangedEvent.Protected.Virtual.Method(typeof(void), "OnChanged").Parameter(typeof(EventArgs), "e");
{
g.If(Changed != null);
{
g.InvokeDelegate(Changed, g.This(), g.Arg("e"));
}
g.End();
}
// Override some of the methods that can change the list;
// invoke event after each
g = ListWithChangedEvent.Public.Override.Method(typeof(int), "Add").Parameter(typeof(object), "value");
{
Operand i = g.Local(g.Base().Invoke("Add", g.Arg("value")));
g.Invoke(g.This(), "OnChanged", Static.Field(typeof(EventArgs), "Empty"));
g.Return(i);
}
g = ListWithChangedEvent.Public.Override.Method(typeof(void), "Clear");
{
g.Invoke(g.Base(), "Clear");
g.Invoke(g.This(), "OnChanged", Static.Field(typeof(EventArgs), "Empty"));
}
g = ListWithChangedEvent.Public.Override.Indexer(typeof(object)).Index(typeof(int), "index").Setter();
{
g.Assign(g.Base()[g.Arg("index")], g.PropertyValue());
g.Invoke(g.This(), "OnChanged", Static.Field(typeof(EventArgs), "Empty"));
}
}
}
using (ag.Namespace("TestEvents"))
{
TypeGen EventListener = ag.Class("EventListener");
{
FieldGen List = EventListener.Field(ListWithChangedEvent, "List");
// This will be called whenever the list changes.
CodeGen g = EventListener.Private.Method(typeof(void), "ListChanged").Parameter(typeof(object), "sender").Parameter(typeof(EventArgs), "eventArgs");
{
g.WriteLine("This is called when the event fires.");
}
g = EventListener.Public.Constructor().Parameter(ListWithChangedEvent, "list");
{
g.Assign(List, g.Arg("list"));
// Add "ListChanged" to the Changed event on "List".
g.SubscribeEvent(List, "Changed", Exp.NewDelegate(ChangedEventHandler, g.This(), "ListChanged"));
}
g = EventListener.Public.Method(typeof(void), "Detach");
{
// Detach the event and delete the list
g.UnsubscribeEvent(List, "Changed", Exp.NewDelegate(ChangedEventHandler, g.This(), "ListChanged"));
g.Assign(List, null);
}
}
TypeGen Test = ag.Class("Test");
{
// Test the ListWithChangedEvent class.
CodeGen g = Test.Public.Static.Method(typeof(void), "Main");
{
// Create a new list.
Operand list = g.Local(Exp.New(ListWithChangedEvent));
// Create a class that listens to the list's change event.
Operand listener = g.Local(Exp.New(EventListener, list));
// Add and remove items from the list.
g.Invoke(list, "Add", "item 1");
g.Invoke(list, "Clear");
g.Invoke(listener, "Detach");
}
}
}
}
// example based on the MSDN Properties Sample (abstractshape.cs, shapes.cs, shapetest.cs)
public static void GenShapeTest(AssemblyGen ag)
{
// abstractshape.cs
TypeGen Shape = ag.Public.Abstract.Class("Shape");
{
FieldGen myId = Shape.Private.Field(typeof(string), "myId");
PropertyGen Id = Shape.Public.SimpleProperty(myId, "Id");
CodeGen g = Shape.Public.Constructor().Parameter(typeof(string), "s");
{
g.Assign(Id, g.Arg("s")); // calling the set accessor of the Id property
}
// Area is a read-only property - only a get accessor is needed:
PropertyGen Area = Shape.Public.Abstract.Property(typeof(double), "Area");
Area.Getter();
g = Shape.Public.Override.Method(typeof(string), "ToString");
{
g.Return(Id + " Area = " + Static.Invoke(typeof(string), "Format", "{0:F2}", Area));
}
}
// shapes.cs
TypeGen Square = ag.Public.Class("Square", Shape);
{
FieldGen mySide = Square.Private.Field(typeof(int), "mySide");
CodeGen g = Square.Public.Constructor().Parameter(typeof(int), "side").Parameter(typeof(string), "id");
{
g.InvokeBase(g.Arg("id"));
g.Assign(mySide, g.Arg("side"));
}
PropertyGen Area = Square.Public.Override.Property(typeof(double), "Area");
g = Area.Getter();
{
// Given the side, return the area of a square:
g.Return(mySide * mySide);
}
}
TypeGen Circle = ag.Public.Class("Circle", Shape);
{
FieldGen myRadius = Circle.Private.Field(typeof(int), "myRadius");
CodeGen g = Circle.Public.Constructor().Parameter(typeof(int), "radius").Parameter(typeof(string), "id");
{
g.InvokeBase(g.Arg("id"));
g.Assign(myRadius, g.Arg("radius"));
}
PropertyGen Area = Circle.Public.Override.Property(typeof(double), "Area");
g = Area.Getter();
{
// Given the radius, return the area of a circle:
g.Return(myRadius * myRadius * Math.PI);
}
}
TypeGen Rectangle = ag.Public.Class("Rectangle", Shape);
{
FieldGen myWidth = Rectangle.Private.Field(typeof(int), "myWidth");
FieldGen myHeight = Rectangle.Private.Field(typeof(int), "myHeight");
CodeGen g = Rectangle.Public.Constructor()
.Parameter(typeof(int), "width")
.Parameter(typeof(int), "height")
.Parameter(typeof(string), "id")
;
{
g.InvokeBase(g.Arg("id"));
g.Assign(myWidth, g.Arg("width"));
g.Assign(myHeight, g.Arg("height"));
}
PropertyGen Area = Rectangle.Public.Override.Property(typeof(double), "Area");
g = Area.Getter();
{
// Given the width and height, return the area of a rectangle:
g.Return(myWidth * myHeight);
}
}
// shapetest.cs
TypeGen TestClass = ag.Public.Class("TestClass");
{
CodeGen g = TestClass.Public.Static.Method(typeof(void), "Main");
{
Operand shapes = g.Local(Exp.NewInitializedArray(Shape,
Exp.New(Square, 5, "Square #1"),
Exp.New(Circle, 3, "Circle #1"),
Exp.New(Rectangle, 4, 5, "Rectangle #1")));
g.WriteLine("Shapes Collection");
Operand s = g.ForEach(Shape, shapes);
{
g.WriteLine(s);
}
g.End();
}
}
}
