[Issue 2452] New: Unimplemented method errors should show function overload

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2452

           Summary: Unimplemented method errors should show function
                    overload
           Product: D
           Version: 1.033
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: diagnostic
          Severity: minor
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: fraserofthenight at gmail.com


If an interface method is not implemented in a class that implements the
interface, the arguments the method takes should be shown. For example, if you
have:

interface IAstVisitor {
    void visit(VarDeclaration node);
    void visit(FuncDeclaration node);
}

class AstPrinter : IAstVisitor {
    void visit(VarDeclaration node) { ... }
}

The current error message reads:
class AstPrinter interface function IAstVisitor.visit isn't implemented

It should read:
class AstPrinter interface function IAstVisitor.visit(FuncDeclaration) isn't
implemented

When you have 80 methods named "visit", telling them apart, figuring out
exactly which one isn't implemented gets a bit more tricky...


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