add the ability to add custom parameter types to the interpreter and mapped macros with any number of macro functions - example added - although it's working it is not ready yet - I have to do some cleanup, doc comments and a TODO

Former-commit-id: 8ac751b649a3b8e59948fd4c89ad53d25f49d0d5

hero/param.go

@@ -19,64 +19,8 @@ type params struct {
 
 func (p *params) resolve(index int, typ reflect.Type) (reflect.Value, bool) {
 	currentParamIndex := p.next
-	v, ok := resolveParam(currentParamIndex, typ)
+	v, ok := context.ParamResolverByKindAndIndex(typ.Kind(), currentParamIndex)
 
 	p.next = p.next + 1
 	return v, ok
 }
-
-func resolveParam(currentParamIndex int, typ reflect.Type) (reflect.Value, bool) {
-	var fn interface{}
-
-	switch typ.Kind() {
-	case reflect.Int:
-		fn = func(ctx context.Context) int {
-			// the second "ok/found" check is not necessary,
-			// because even if the entry didn't found on that "index"
-			// it will return an empty entry which will return the
-			// default value passed from the xDefault(def) because its `ValueRaw` is nil.
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			v, _ := entry.IntDefault(0)
-			return v
-		}
-	case reflect.Int64:
-		fn = func(ctx context.Context) int64 {
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			v, _ := entry.Int64Default(0)
-
-			return v
-		}
-	case reflect.Uint8:
-		fn = func(ctx context.Context) uint8 {
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			v, _ := entry.Uint8Default(0)
-
-			return v
-		}
-	case reflect.Uint64:
-		fn = func(ctx context.Context) uint64 {
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			v, _ := entry.Uint64Default(0)
-
-			return v
-		}
-	case reflect.Bool:
-		fn = func(ctx context.Context) bool {
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			v, _ := entry.BoolDefault(false)
-			return v
-		}
-	case reflect.String:
-		fn = func(ctx context.Context) string {
-			entry, _ := ctx.Params().GetEntryAt(currentParamIndex)
-			// print(entry.Key + " with index of: ")
-			// print(currentParamIndex)
-			// println(" and value: " + entry.String())
-			return entry.String()
-		}
-	default:
-		return reflect.Value{}, false
-	}
-
-	return reflect.ValueOf(fn), true
-}