From b37afd25d45bc906605821c0f712619b6e6969df Mon Sep 17 00:00:00 2001
From: amirrezaask <raskarpour@gmail.com>
Date: Sat, 5 Dec 2020 13:37:04 +0330
Subject: [PATCH 1/2] add .Error method to error struct

---
 bootstrap/pkg/core/errors.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bootstrap/pkg/core/errors.go b/bootstrap/pkg/core/errors.go
index 8b9b5d9..ae536ab 100644
--- a/bootstrap/pkg/core/errors.go
+++ b/bootstrap/pkg/core/errors.go
@@ -43,6 +43,10 @@ func (e *Error) ToDebugStr() string {
 	return e.msg
 }
 
+func (e *Error) Error() string {
+	return e.msg
+}
+
 func MakeError(rt *Runtime, msg string) IError {
 	return &Error{
 		msg: msg,

From 214393870549495d9e857579006bb736569edc63 Mon Sep 17 00:00:00 2001
From: amirrezaask <raskarpour@gmail.com>
Date: Sat, 5 Dec 2020 14:43:49 +0330
Subject: [PATCH 2/2] add wrapped error

---
 bootstrap/pkg/core/errors.go | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/bootstrap/pkg/core/errors.go b/bootstrap/pkg/core/errors.go
index ae536ab..6f9d441 100644
--- a/bootstrap/pkg/core/errors.go
+++ b/bootstrap/pkg/core/errors.go
@@ -28,11 +28,13 @@ type IError interface {
 	ast.ILocatable
 	IPrintable
 	IDebuggable
+	WithError(err error) IError
 }
 
 type Error struct {
 	Node
-	msg string
+	WrappedErr error
+	msg        string
 }
 
 func (e *Error) String() string {
@@ -40,7 +42,16 @@ func (e *Error) String() string {
 }
 
 func (e *Error) ToDebugStr() string {
-	return e.msg
+	_, isInternalErr := e.WrappedErr.(*Error)
+	if isInternalErr {
+		return fmt.Sprintf("%s:\n\t%s", e.msg, e.WrappedErr.(*Error).ToDebugStr())
+	}
+	return fmt.Sprintf("%s:\n\t%s", e.msg, e.WrappedErr.Error())
+}
+
+func (e *Error) WithError(err error) IError {
+	e.WrappedErr = err
+	return e
 }
 
 func (e *Error) Error() string {