Merge pull request #10 from AlexCatarino/lean

 Method overload with decimal parameter accepts non-decimal numbers

Author: AlexCatarino

AUTHORS.md

@@ -12,6 +12,7 @@
 
 ## Contributors
 
+-   Alexandre Catarino([@AlexCatarino](https://github.com/AlexCatarino))
 -   Arvid JB ([@ArvidJB](https://github.com/ArvidJB))
 -   Bradley Friedman ([@leith-bartrich](https://github.com/leith-bartrich))
 -   Callum Noble ([@callumnoble](https://github.com/callumnoble))

CHANGELOG.md

@@ -31,6 +31,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 -   Fixed `clr.GetClrType` when iterating over `System` members (#607) 
 -   Fixed `LockRecursionException` when loading assemblies (#627)
 -   Fixed errors breaking .NET Remoting on method invoke (#276)
+-   Fixed missing information on 'No method matches given arguments' by adding the method name
 
 
 ## [2.3.0][] - 2017-03-11

src/runtime/converter.cs

@@ -106,6 +106,9 @@ internal static Type GetTypeByAlias(IntPtr op)
             if (op == Runtime.PyBoolType)
                 return boolType;
 
+            if (op == Runtime.PyDecimalType)
+                return decimalType;
+
             return null;
         }
 
@@ -136,7 +139,7 @@ internal static IntPtr GetPythonTypeByAlias(Type op)
                 return Runtime.PyBoolType;
 
             if (op == decimalType)
-                return Runtime.PyFloatType;
+                return Runtime.PyDecimalType;
 
             return IntPtr.Zero;
         }

src/runtime/methodbinder.cs

@@ -186,9 +186,16 @@ internal static int GetPrecedence(MethodBase mi)
                 val += ArgPrecedence(pi[i].ParameterType);
             }
 
+            var info = mi as MethodInfo;
+            if (info != null)
+            {
+                val += ArgPrecedence(info.ReturnType);
+                val += mi.DeclaringType == mi.ReflectedType ? 0 : 3000;
+            }
+            
             return val;
         }
-
+        
         /// <summary>
         /// Return a precedence value for a particular Type object.
         /// </summary>
@@ -200,6 +207,11 @@ internal static int ArgPrecedence(Type t)
                 return 3000;
             }
 
+            if (t.IsAssignableFrom(typeof(PyObject)))
+            {
+                return -1;
+            }
+
             TypeCode tc = Type.GetTypeCode(t);
             // TODO: Clean up
             switch (tc)
@@ -408,6 +420,12 @@ internal Binding Bind(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, Meth
                                             typematch = true;
                                             clrtype = pi[n].ParameterType;
                                         }
+                                        // accepts non-decimal numbers in decimal parameters 
+                                        if (underlyingType == typeof(decimal))
+                                        {
+                                            clrtype = pi[n].ParameterType;
+                                            typematch = Converter.ToManaged(op, clrtype, out arg, false);
+                                        }
                                         // this takes care of implicit conversions
                                         var opImplicit = pi[n].ParameterType.GetMethod("op_Implicit", new[] { clrtype });
                                         if (opImplicit != null)

src/runtime/runtime.cs

@@ -299,6 +299,14 @@ internal static void Initialize()
             PyFloatType = PyObject_Type(op);
             XDecref(op);
 
+            IntPtr decimalMod = PyImport_ImportModule("decimal");
+            IntPtr decimalCtor = PyObject_GetAttrString(decimalMod, "Decimal");
+            op = PyObject_CallObject(decimalCtor, IntPtr.Zero);
+            PyDecimalType = PyObject_Type(op);
+            XDecref(op);
+            XDecref(decimalMod);
+            XDecref(decimalCtor);
+
 #if PYTHON3
             PyClassType = IntPtr.Zero;
             PyInstanceType = IntPtr.Zero;
@@ -392,6 +400,7 @@ internal static int AtExit()
         internal static IntPtr PyBoolType;
         internal static IntPtr PyNoneType;
         internal static IntPtr PyTypeType;
+        internal static IntPtr PyDecimalType;
 
 #if PYTHON3
         internal static IntPtr PyBytesType;