137 lines
2.6 KiB
Go
137 lines
2.6 KiB
Go
/*
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Copyright 2023 API Testing Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package compare
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import (
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"fmt"
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"strings"
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)
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type noEqualErr struct {
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Path []string
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Message string
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NeqErrs *noEqualErrs
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}
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type noEqualErrs struct {
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errs []error
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}
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type task struct {
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path []string
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errs []error
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}
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func (e *noEqualErr) Error() string {
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if e.NeqErrs == nil {
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return fmt.Sprintf("compare: field %s: %s", strings.Join(e.Path, "."), e.Message)
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}
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msg := []string{}
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q := []*task{{
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path: e.Path,
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errs: e.NeqErrs.errs,
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}}
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iter := 0
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end := len(e.NeqErrs.errs)
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for {
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if iter == end {
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iter = 0
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q[0] = nil
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q = q[1:]
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if len(q) == 0 {
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break
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}
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end = len(q[0].errs)
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continue
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}
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v := q[0].errs[iter]
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switch v.(type) {
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case *noEqualErr:
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if v.(*noEqualErr).NeqErrs != nil {
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q = append(q, &task{append(q[0].path, v.(*noEqualErr).Path...), v.(*noEqualErr).NeqErrs.errs})
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} else {
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msg = append(msg,
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fmt.Sprintf("compare: field %s: %s",
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strings.Join(append(q[0].path, v.(*noEqualErr).Path...), "."), v.(*noEqualErr).Message))
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}
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case *noEqualErrs:
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q = append(q, &task{path: q[0].path, errs: v.(*noEqualErrs).errs})
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}
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iter++
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}
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return strings.Join(msg, "\n")
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}
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// newNoEqualErr returns a NoEqualErr.
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func newNoEqualErr(field string, err error) error {
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noEqerr := &noEqualErr{
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Path: []string{field},
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Message: "",
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}
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if err != nil {
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if v, ok := err.(*noEqualErr); ok {
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noEqerr.Path = append(noEqerr.Path, v.Path...)
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if v.Message != "" {
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noEqerr.Message = v.Message
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}
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} else if v, ok := err.(*noEqualErrs); ok {
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noEqerr.NeqErrs = v
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} else {
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noEqerr.Message = err.Error()
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}
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}
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return noEqerr
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}
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// JoinErr returns an error that warp the given errors.
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func JoinErr(errs ...error) error {
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n := 0
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for _, err := range errs {
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if err != nil {
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n++
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}
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}
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if n == 0 {
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return nil
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}
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e := &noEqualErrs{
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errs: make([]error, 0, n),
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}
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for _, err := range errs {
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if err != nil {
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e.errs = append(e.errs, err)
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}
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}
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return e
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}
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func (e *noEqualErrs) Error() string {
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var b []byte
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for i, err := range e.errs {
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if i > 0 {
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b = append(b, '\n')
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}
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b = append(b, err.Error()...)
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}
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return string(b)
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}
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