mirror of https://github.com/go-gitea/gitea.git
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
package rule
|
|
|
|
import (
|
|
"go/ast"
|
|
|
|
"github.com/mgechev/revive/lint"
|
|
)
|
|
|
|
// BlankImportsRule lints given else constructs.
|
|
type BlankImportsRule struct{}
|
|
|
|
// Apply applies the rule to given file.
|
|
func (r *BlankImportsRule) Apply(file *lint.File, _ lint.Arguments) []lint.Failure {
|
|
var failures []lint.Failure
|
|
|
|
fileAst := file.AST
|
|
walker := lintBlankImports{
|
|
file: file,
|
|
fileAst: fileAst,
|
|
onFailure: func(failure lint.Failure) {
|
|
failures = append(failures, failure)
|
|
},
|
|
}
|
|
|
|
ast.Walk(walker, fileAst)
|
|
|
|
return failures
|
|
}
|
|
|
|
// Name returns the rule name.
|
|
func (r *BlankImportsRule) Name() string {
|
|
return "blank-imports"
|
|
}
|
|
|
|
type lintBlankImports struct {
|
|
fileAst *ast.File
|
|
file *lint.File
|
|
onFailure func(lint.Failure)
|
|
}
|
|
|
|
func (w lintBlankImports) Visit(_ ast.Node) ast.Visitor {
|
|
// In package main and in tests, we don't complain about blank imports.
|
|
if w.file.Pkg.IsMain() || w.file.IsTest() {
|
|
return nil
|
|
}
|
|
|
|
// The first element of each contiguous group of blank imports should have
|
|
// an explanatory comment of some kind.
|
|
for i, imp := range w.fileAst.Imports {
|
|
pos := w.file.ToPosition(imp.Pos())
|
|
|
|
if !isBlank(imp.Name) {
|
|
continue // Ignore non-blank imports.
|
|
}
|
|
if i > 0 {
|
|
prev := w.fileAst.Imports[i-1]
|
|
prevPos := w.file.ToPosition(prev.Pos())
|
|
if isBlank(prev.Name) && prevPos.Line+1 == pos.Line {
|
|
continue // A subsequent blank in a group.
|
|
}
|
|
}
|
|
|
|
// This is the first blank import of a group.
|
|
if imp.Doc == nil && imp.Comment == nil {
|
|
w.onFailure(lint.Failure{
|
|
Node: imp,
|
|
Failure: "a blank import should be only in a main or test package, or have a comment justifying it",
|
|
Confidence: 1,
|
|
Category: "imports",
|
|
})
|
|
}
|
|
}
|
|
return nil
|
|
}
|