update

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/open-policy-agent/opa/loader/errors.go

@@ -0,0 +1,68 @@
+// Copyright 2017 The OPA Authors.  All rights reserved.
+// Use of this source code is governed by an Apache2
+// license that can be found in the LICENSE file.
+
+package loader
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/open-policy-agent/opa/ast"
+)
+
+// Errors is a wrapper for multiple loader errors.
+type Errors []error
+
+func (e Errors) Error() string {
+	if len(e) == 0 {
+		return "no error(s)"
+	}
+	if len(e) == 1 {
+		return "1 error occurred during loading: " + e[0].Error()
+	}
+	buf := make([]string, len(e))
+	for i := range buf {
+		buf[i] = e[i].Error()
+	}
+	return fmt.Sprintf("%v errors occurred during loading:\n", len(e)) + strings.Join(buf, "\n")
+}
+
+func (e *Errors) add(err error) {
+	if errs, ok := err.(ast.Errors); ok {
+		for i := range errs {
+			*e = append(*e, errs[i])
+		}
+	} else {
+		*e = append(*e, err)
+	}
+}
+
+type unsupportedDocumentType string
+
+func (path unsupportedDocumentType) Error() string {
+	return string(path) + ": bad document type"
+}
+
+type unrecognizedFile string
+
+func (path unrecognizedFile) Error() string {
+	return string(path) + ": can't recognize file type"
+}
+
+func isUnrecognizedFile(err error) bool {
+	_, ok := err.(unrecognizedFile)
+	return ok
+}
+
+type mergeError string
+
+func (e mergeError) Error() string {
+	return string(e) + ": merge error"
+}
+
+type emptyModuleError string
+
+func (e emptyModuleError) Error() string {
+	return string(e) + ": empty policy"
+}