Fixed handling of property indexers in the CLI generator.

src/Generator.Tests/GeneratorTest.cs

@@ -30,8 +30,9 @@ namespace CppSharp.Utils
             options.OutputDir = Path.Combine(GetOutputDirectory(), "gen", name);
             options.SharedLibraryName = name + ".Native";
             options.GenerateLibraryNamespace = true;
-            options.Quiet = true;
+            options.Quiet = false;
             options.IgnoreParseWarnings = true;
+            options.Verbose = true;
 
             driver.Diagnostics.EmitMessage("");
             driver.Diagnostics.EmitMessage("Generating bindings for {0} ({1})",

src/Generator/Generators/CLI/CLIHeadersTemplate.cs

@@ -621,6 +621,22 @@ namespace CppSharp.Generators.CLI
             PopIndent();
         }
 
+        public void GenerateIndexer(Property property)
+        {
+            var type = property.QualifiedType.Visit(TypePrinter);
+
+            WriteLine("property {0} default[int]", type);
+            WriteStartBraceIndent();
+
+            if (property.HasGetter)
+                WriteLine("{0} get(int index);", type);
+
+            if (property.HasSetter)
+                WriteLine("void set(int index, {0});", type);
+
+            WriteCloseBraceIndent();
+        }
+
         public void GenerateProperty(Property property)
         {
             if (!(property.HasGetter || property.HasSetter))
@@ -629,16 +645,24 @@ namespace CppSharp.Generators.CLI
             PushBlock(CLIBlockKind.Property, property);
             var type = property.QualifiedType.Visit(TypePrinter);
 
+            if (property.IsIndexer)
+            {
+                GenerateIndexer(property);
+            }
+            else
+            {
                 WriteLine("property {0} {1}", type, property.Name);
                 WriteStartBraceIndent();
 
-            if(property.HasGetter)
+                if (property.HasGetter)
                     WriteLine("{0} get();", type);
 
-            if(property.HasSetter)
+                if (property.HasSetter)
                     WriteLine("void set({0});", type);
 
                 WriteCloseBraceIndent();
+            }
+
             PopBlock(NewLineKind.BeforeNextBlock);
         }
 

src/Generator/Generators/CLI/CLISourcesTemplate.cs

@@ -312,7 +312,6 @@ namespace CppSharp.Generators.CLI
             if (property.Ignore) return;
 
             PushBlock(CLIBlockKind.Property);
-            var @class = property.Namespace as Class;
 
             if (property.Field != null)
             {
@@ -343,15 +342,23 @@ namespace CppSharp.Generators.CLI
             if (decl == null)
                 return;
 
-            WriteLine("void {0}::{1}::set({2} value)", QualifiedIdentifier(@class),
-                      name, type);
+            var method = decl as Method;
+            var isIndexer = method != null &&
+                method.OperatorKind == CXXOperatorKind.Subscript;
+
+            var args = new List<string>();
+            if (isIndexer)
+                args.Add("int index");
+            args.Add(string.Format("{0} value",  type));
+
+            WriteLine("void {0}::{1}::set({2})", QualifiedIdentifier(@class),
+                name, string.Join(", ", args));
+
             WriteStartBraceIndent();
 
-            if (decl is Function)
+            if (decl is Function && !isIndexer)
             {
                 var func = decl as Function;
-                if(func.Parameters[0].Name != "value")
-                    WriteLine("auto {0} = value;", func.Parameters[0].Name);
                 GenerateFunctionCall(func, @class);
             }
             else
@@ -386,6 +393,9 @@ namespace CppSharp.Generators.CLI
                     variable = string.Format("((::{0}*)NativePtr)->{1}",
                                              @class.QualifiedOriginalName, decl.OriginalName);
 
+                if (isIndexer)
+                    variable += "(index)";
+
                 if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
                     Write(marshal.Context.SupportBefore);
 
@@ -402,8 +412,17 @@ namespace CppSharp.Generators.CLI
             if (decl == null)
                 return;
 
-            WriteLine("{0} {1}::{2}::get()", type, QualifiedIdentifier(@class),
-                      name);
+            var method = decl as Method;
+            var isIndexer = method != null &&
+                method.OperatorKind == CXXOperatorKind.Subscript;
+
+            var args = new List<string>();
+            if (isIndexer)
+                args.Add("int index");
+
+            WriteLine("{0} {1}::{2}::get({3})", type, QualifiedIdentifier(@class),
+                      name, string.Join(", ", args));
+
             WriteStartBraceIndent();
 
             if (decl is Function)
@@ -855,7 +874,8 @@ namespace CppSharp.Generators.CLI
                 var typeName = method.ConversionType.Visit(typePrinter);
                 WriteLine("({0}) {1};", typeName, @params[0].Name);
             }
-            else if (function.IsOperator)
+            else if (function.IsOperator &&
+                     function.OperatorKind != CXXOperatorKind.Subscript)
             {
                 var opName = function.Name.Replace("operator", "").Trim();
 
@@ -865,8 +885,7 @@ namespace CppSharp.Generators.CLI
                     WriteLine("{0} {1};", opName, @params[0].Name);
                     break;
                 case CXXOperatorArity.Binary:
-                    WriteLine("{0} {1} {2};", @params[0].Name, opName,
-                        @params[1].Name);
+                    WriteLine("{0} {1} {2};", @params[0].Name, opName, @params[1].Name);
                     break;
                 }
             }

src/Generator/Passes/CheckOperatorsOverloads.cs

@@ -86,9 +86,9 @@ namespace CppSharp.Passes
             }
         }
 
-        private static void CreateIndexer(Class @class, Method @operator)
+        void CreateIndexer(Class @class, Method @operator)
         {
-            Property property = new Property
+            var property = new Property
                 {
                     Name = "Item",
                     QualifiedType = @operator.ReturnType,
@@ -96,9 +96,21 @@ namespace CppSharp.Passes
                     Namespace = @class,
                     GetMethod = @operator
                 };
-            property.Parameters.AddRange(@operator.Parameters);
+
             if (!@operator.ReturnType.Qualifiers.IsConst && @operator.ReturnType.Type.IsAddress())
                 property.SetMethod = @operator;
+
+            // C++/CLI uses "default" as the indexer property name.
+            if (Driver.Options.IsCLIGenerator)
+                property.Name = "default";
+
+            property.GetMethod.Parameters[0].Name = "index";
+
+            if (property.SetMethod != null)
+                property.SetMethod.Parameters[0].Name = "index";
+
+            property.Parameters.AddRange(@operator.Parameters);
+
             @class.Properties.Add(property);
             @operator.IsGenerated = false;
         }

tests/Basic/Basic.Tests.cs

@@ -218,5 +218,12 @@ public class BasicTests : GeneratorTestFixture
             Assert.That(foo2.testCharMarshalling(c), Is.EqualTo(c));
         Assert.Catch<ArgumentException>(() => foo2.testCharMarshalling('ж'));
     }
+
+    [Test]
+    public unsafe void TestIndexers()
+    {
+        var someStruct = new SomeStruct();
+        Assert.That(someStruct[0], Is.EqualTo(1));
+    }
 }
  

tests/Basic/Basic.h

@@ -304,11 +304,12 @@ struct EmptyNamedNestedEnum
 };
 
 typedef unsigned long foo_t;
-typedef struct SomeStruct
+typedef DLL_API struct SomeStruct
 {
-	const foo_t& operator[](int i) const { return p[i]; }
-	foo_t& operator[](int i) { return p[i]; }
-	foo_t* p;
+	SomeStruct() : p(1) {}
+	const foo_t& operator[](int i) const { return p; }
+	foo_t operator[](int i) { return p; }
+	foo_t p;
 }
 SomeStruct;