OK, my dream-idea is implemented. TODO: Some examples and doc.go is not updated yet, comments on the mvc/di subpackage, the tutorial/vuejs-todo-mvc is running but not finished yet (it's using browser's localstorage and it should be replaced by the http requests that are registered via iris mvc

Former-commit-id: 0ea7e01ce1d78bcb78b40f3b0f5c03ad7c9abaea

mvc/reflect.go

@@ -0,0 +1,54 @@
+package mvc
+
+import (
+	"reflect"
+
+	"github.com/kataras/iris/context"
+	"github.com/kataras/iris/mvc/di"
+)
+
+var baseControllerTyp = reflect.TypeOf((*BaseController)(nil)).Elem()
+
+func isBaseController(ctrlTyp reflect.Type) bool {
+	return ctrlTyp.Implements(baseControllerTyp)
+}
+
+var contextTyp = reflect.TypeOf((*context.Context)(nil)).Elem()
+
+func isContext(inTyp reflect.Type) bool {
+	return inTyp.Implements(contextTyp)
+}
+
+func getInputArgsFromFunc(funcTyp reflect.Type) []reflect.Type {
+	n := funcTyp.NumIn()
+	funcIn := make([]reflect.Type, n, n)
+	for i := 0; i < n; i++ {
+		funcIn[i] = funcTyp.In(i)
+	}
+	return funcIn
+}
+
+var (
+	typeChecker = func(fn reflect.Type) bool {
+		// valid if that single input arg is a typeof context.Context.
+		return fn.NumIn() == 1 && isContext(fn.In(0))
+	}
+
+	hijacker = func(fieldOrFuncInput reflect.Type) (*di.BindObject, bool) {
+		if !isContext(fieldOrFuncInput) {
+			return nil, false
+		}
+
+		// this is being used on both func injector and struct injector.
+		// if the func's input argument or the struct's field is a type of Context
+		// then we can do a fast binding using the ctxValue
+		// which is used as slice of reflect.Value, because of the final method's `Call`.
+		return &di.BindObject{
+			Type:     contextTyp,
+			BindType: di.Dynamic,
+			ReturnValue: func(ctxValue []reflect.Value) reflect.Value {
+				return ctxValue[0]
+			},
+		}, true
+	}
+)