Unstable version with channels, context and verbose mode

geval.go

@@ -2,39 +2,80 @@ package geval
 
 import (
 	"context"
-	"log"
+	"fmt"
+	"runtime"
 )
 
 type Params struct {
 	Err     error
-	Success func(ctx context.Context)
-	Failed  func(ctx context.Context)
-	Handler func() (context.Context, error)
+	Success func(ctx *Context)
+	Failed  func(ctx *Context)
+	Handler func(ctx *Context) error
 	Panic   func(v any) error
-	Verbose int
-	Context context.Context
+	Context *Context
+	Verbose bool
+}
+
+type Context struct {
+	Context    context.Context
+	CancelFunc context.CancelFunc
+	Channel    chan interface{}
+}
+
+func (cc *Context) Update(key interface{}, val interface{}) {
+	cc.Context = context.WithValue(cc.Context, key, val)
+}
+
+func (cc *Context) Read(key interface{}) interface{} {
+	return (cc.Context).Value(key)
+}
+
+func CreateContext() *Context {
+	ctx, cancel := context.WithCancel(context.Background())
+
+	return &Context{
+		Context:    ctx,
+		CancelFunc: cancel,
+		Channel:    make(chan interface{}),
+	}
 }
 
 func Run(params *Params) {
-	var err error
-	var ctx = context.TODO()
+	var err error = params.Err
+	var template string
+	var ctx = params.Context
+
+	if (ctx) == nil {
+		panic("Cannot Run wihout Context")
+	}
+
+	_, file, line, ok := runtime.Caller(1)
+	if ok {
+		template = fmt.Sprintf("%s:%d %%s\n", file, line)
+	}
 
 	if params.Err == nil && params.Handler != nil {
-		ctx, err = params.Handler()
+		err = params.Handler(ctx)
 	}
 
 	if err != nil {
-		if params.Verbose > 0 {
-			log.Println(err.Error())
-		}
 		if params.Panic != nil {
+			if params.Verbose {
+				fmt.Printf("[VERBOSE] %s", fmt.Sprintf(template, "(Panic)"))
+			}
 			panic(params.Panic(err))
 		}
 		if params.Failed != nil {
+			if params.Verbose {
+				fmt.Printf("[VERBOSE] %s", fmt.Sprintf(template, "(Failed)"))
+			}
 			params.Failed(ctx)
 		}
 	} else {
 		if params.Success != nil {
+			if params.Verbose {
+				fmt.Printf("[VERBOSE] %s", fmt.Sprintf(template, "(Success)"))
+			}
 			params.Success(ctx)
 		}
 	}