Add code for new package njs-errors (+Bump dependancies)

njs-errors/code.go

@@ -0,0 +1,69 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 Nicolas JUHEL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+package njs_errors
+
+import "fmt"
+
+type ErrorCode interface {
+	Error() error
+	ErrorWithCode() error
+
+	String() string
+	StringWithCode() string
+
+	Code() string
+}
+
+type errorCode struct {
+	code string
+	err  ErrorType
+	ori  error
+}
+
+// Error return an error type of the current error code, with no code in reference
+func (e errorCode) Error() error {
+	return e.err.Error(e.ori)
+}
+
+// String return a string of the current error code, with no code in reference
+func (e errorCode) String() string {
+	return e.err.String()
+}
+
+// Code return a string of the current code, with no error in reference
+func (e errorCode) Code() string {
+	return e.code
+}
+
+// ErrorWithCode return a error type of the current code, with error and origin in reference
+func (e errorCode) StringWithCode() string {
+	return e.ErrorWithCode().Error()
+}
+
+// ErrorWithCode return a error type of the current code, with error and origin in reference
+func (e errorCode) ErrorWithCode() error {
+	return fmt.Errorf("(%s) %v", e.code, e.Error())
+}