mvdan.cc
1package module
2
3import (
4 "fmt"
5)
6
7// A ModuleError indicates an error specific to a module.
8type ModuleError struct {
9 Path string
10 Version string
11 Err error
12}
13
14func (e *ModuleError) Error() string {
15 if v, ok := e.Err.(*InvalidVersionError); ok {
16 return fmt.Sprintf("%s@%s: invalid version: %v", e.Path, v.Version, v.Err)
17 }
18 if e.Version != "" {
19 return fmt.Sprintf("%s@%s: %v", e.Path, e.Version, e.Err)
20 }
21 return fmt.Sprintf("module %s: %v", e.Path, e.Err)
22}
23
24func (e *ModuleError) Unwrap() error { return e.Err }
25
26// An InvalidVersionError indicates an error specific to a version, with the
27// module path unknown or specified externally.
28//
29// A ModuleError may wrap an InvalidVersionError, but an InvalidVersionError
30// must not wrap a ModuleError.
31type InvalidVersionError struct {
32 Version string
33 Err error
34}
35
36func (e *InvalidVersionError) Error() string {
37 return fmt.Sprintf("version %q invalid: %s", e.Version, e.Err)
38}
39
40func (e *InvalidVersionError) Unwrap() error { return e.Err }
41
42// An InvalidPathError indicates a module, import, or file path doesn't
43// satisfy all naming constraints. See CheckPath, CheckImportPath,
44// and CheckFilePath for specific restrictions.
45type InvalidPathError struct {
46 Kind string // "module", "import", or "file"
47 Path string
48 Err error
49}
50
51func (e *InvalidPathError) Error() string {
52 return fmt.Sprintf("malformed %s path %q: %v", e.Kind, e.Path, e.Err)
53}
54
55func (e *InvalidPathError) Unwrap() error { return e.Err }