Moved all operators not belonging to a type to the type of their first parameters.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>

src/Generator/Generators/CSharp/CSharpGenerator.cs

@@ -31,6 +31,7 @@ namespace CppSharp.Generators.CSharp
             // CheckAbiParameters runs last because hidden structure parameters
             // should always occur first.
 
+            Driver.AddTranslationUnitPass(new MoveOperatorToClassPass());
             Driver.AddTranslationUnitPass(new CheckOperatorsOverloadsPass());
             Driver.AddTranslationUnitPass(new CheckAbiParameters(Driver.Options));
 

src/Generator/Passes/MoveOperatorToClassPass.cs

@@ -0,0 +1,112 @@
+using System;
+using System.Collections.Generic;
+using CppSharp.AST;
+
+namespace CppSharp.Passes
+{
+    public class MoveOperatorToClassPass : TranslationUnitPass
+    {
+        public override bool VisitMethodDecl(Method method)
+        {
+            return true;
+        }
+
+        public override bool VisitFunctionDecl(Function function)
+        {
+            if (function.Ignore || !function.Name.StartsWith("operator"))
+                return false;
+
+            string type = function.Parameters[0].Type.Desugar().ToString();
+            if (string.IsNullOrEmpty(type))
+                return false;
+
+            var @class = Library.FindCompleteClass(type);
+            if (@class == null)
+                return false;
+
+            function.ExplicityIgnored = true;
+
+            // Create a new fake method so it acts as a static method.
+            var method = new Method()
+            {
+                Namespace = @class,
+                OriginalNamespace = function.Namespace,
+                Name = function.Name,
+                OriginalName = function.OriginalName,
+                Mangled = function.Mangled,
+                Access = AccessSpecifier.Public,
+                Kind = CXXMethodKind.Operator,
+                ReturnType = function.ReturnType,
+                Parameters = new List<Parameter>(function.Parameters),
+                CallingConvention = function.CallingConvention,
+                IsVariadic = function.IsVariadic,
+                IsInline = function.IsInline,
+                IsStatic = true,
+                Conversion = MethodConversionKind.FunctionToStaticMethod,
+                OperatorKind = GetOperatorKind(function.Name)
+            };
+
+            @class.Methods.Add(method);
+
+            Console.WriteLine("Static method: {0}::{1}", @class.Name,
+                function.Name);
+
+            return true;
+        }
+
+        private static CXXOperatorKind GetOperatorKind(string @operator)
+        {
+            const string op = "operator";
+            if (!@operator.StartsWith(op))
+            {
+                return CXXOperatorKind.None;
+            }
+            switch (@operator.Substring(8).Trim())
+            {
+                case "+": return CXXOperatorKind.Plus;
+                case "-": return CXXOperatorKind.Minus;
+                case "!": return CXXOperatorKind.Exclaim;
+                case "~": return CXXOperatorKind.Tilde;
+                case "++": return CXXOperatorKind.PlusPlus;
+                case "--": return CXXOperatorKind.MinusMinus;
+                case "*": return CXXOperatorKind.Star;
+                case "/": return CXXOperatorKind.Slash;
+                case "&": return CXXOperatorKind.Amp;
+                case "|": return CXXOperatorKind.Pipe;
+                case "^": return CXXOperatorKind.Caret;
+                case "<<": return CXXOperatorKind.LessLess;
+                case ">>": return CXXOperatorKind.GreaterGreater;
+                case "==": return CXXOperatorKind.EqualEqual;
+                case "!=": return CXXOperatorKind.ExclaimEqual;
+                case "<": return CXXOperatorKind.Less;
+                case ">": return CXXOperatorKind.Greater;
+                case "<=": return CXXOperatorKind.LessEqual;
+                case ">=": return CXXOperatorKind.GreaterEqual;
+                case "+=": return CXXOperatorKind.PlusEqual;
+                case "-=": return CXXOperatorKind.MinusEqual;
+                case "*=": return CXXOperatorKind.StarEqual;
+                case "/=": return CXXOperatorKind.SlashEqual;
+                case "%=": return CXXOperatorKind.PercentEqual;
+                case "&=": return CXXOperatorKind.AmpEqual;
+                case "|=": return CXXOperatorKind.PipeEqual;
+                case "^=": return CXXOperatorKind.CaretEqual;
+                case "<<=": return CXXOperatorKind.LessLessEqual;
+                case ">>=": return CXXOperatorKind.GreaterGreaterEqual;
+                case "[]": return CXXOperatorKind.Subscript;
+                case "&&": return CXXOperatorKind.AmpAmp;
+                case "||": return CXXOperatorKind.PipePipe;
+                case "=": return CXXOperatorKind.Equal;
+                case ",": return CXXOperatorKind.Comma;
+                case "->*": return CXXOperatorKind.ArrowStar;
+                case "->": return CXXOperatorKind.Arrow;
+                case "()": return CXXOperatorKind.Call;
+                case "?": return CXXOperatorKind.Conditional;
+                case "new": return CXXOperatorKind.New;
+                case "delete": return CXXOperatorKind.Delete;
+                case "new[]": return CXXOperatorKind.Array_New;
+                case "delete[]": return CXXOperatorKind.Array_Delete;
+            }
+            return CXXOperatorKind.None;
+        }
+    }
+}