[mcs] C#7 type pattern matching

[mono.git] / mcs / mcs / ecore.cs

diff --git a/mcs/mcs/ecore.cs b/mcs/mcs/ecore.cs
index a6c575ecc9e33267efd52365b2cc275d044cb915..73e50c4068f62902fd8f04dd4062e324366dd717 100644 (file)
--- a/mcs/mcs/ecore.cs
+++ b/mcs/mcs/ecore.cs
@@ -239,6 +239,15 @@ namespace Mono.CSharp {
                        return null;
                }
 
+               protected void CheckExpressionVariable (ResolveContext rc)
+               {
+                       if (rc.HasAny (ResolveContext.Options.BaseInitializer | ResolveContext.Options.FieldInitializerScope)) {
+                               rc.Report.Error (8200, loc, "Out variable and pattern variable declarations are not allowed within constructor initializers, field initializers, or property initializers");
+                       } else if (rc.HasSet (ResolveContext.Options.QueryClauseScope)) {
+                               rc.Report.Error (8201, loc, "Out variable and pattern variable declarations are not allowed within a query clause");
+                       }
+               }
+
                public static void ErrorIsInaccesible (IMemberContext rc, string member, Location loc)
                {
                        rc.Module.Compiler.Report.Error (122, loc, "`{0}' is inaccessible due to its protection level", member);
@@ -638,6 +647,10 @@ namespace Mono.CSharp {
                        ec.Emit (OpCodes.Pop);
                }
 
+               public virtual void EmitPrepare (EmitContext ec)
+               {
+               }
+
                //
                // Emits the expression into temporary field variable. The method
                // should be used for await expressions only