mirror of https://github.com/go-gitea/gitea.git
96 lines
1.7 KiB
Go
96 lines
1.7 KiB
Go
package rule
|
|
|
|
import (
|
|
"go/ast"
|
|
"go/types"
|
|
|
|
"github.com/mgechev/revive/lint"
|
|
)
|
|
|
|
// StringOfIntRule warns when logic expressions contains Boolean literals.
|
|
type StringOfIntRule struct{}
|
|
|
|
// Apply applies the rule to given file.
|
|
func (r *StringOfIntRule) Apply(file *lint.File, _ lint.Arguments) []lint.Failure {
|
|
var failures []lint.Failure
|
|
|
|
onFailure := func(failure lint.Failure) {
|
|
failures = append(failures, failure)
|
|
}
|
|
|
|
astFile := file.AST
|
|
file.Pkg.TypeCheck()
|
|
|
|
w := &lintStringInt{file, onFailure}
|
|
ast.Walk(w, astFile)
|
|
|
|
return failures
|
|
}
|
|
|
|
// Name returns the rule name.
|
|
func (r *StringOfIntRule) Name() string {
|
|
return "string-of-int"
|
|
}
|
|
|
|
type lintStringInt struct {
|
|
file *lint.File
|
|
onFailure func(lint.Failure)
|
|
}
|
|
|
|
func (w *lintStringInt) Visit(node ast.Node) ast.Visitor {
|
|
ce, ok := node.(*ast.CallExpr)
|
|
if !ok {
|
|
return w
|
|
}
|
|
|
|
if !w.isCallStringCast(ce.Fun) {
|
|
return w
|
|
}
|
|
|
|
if !w.isIntExpression(ce.Args) {
|
|
return w
|
|
}
|
|
|
|
w.onFailure(lint.Failure{
|
|
Confidence: 1,
|
|
Node: ce,
|
|
Failure: "dubious convertion of an integer into a string, use strconv.Itoa",
|
|
})
|
|
|
|
return w
|
|
}
|
|
|
|
func (w *lintStringInt) isCallStringCast(e ast.Expr) bool {
|
|
t := w.file.Pkg.TypeOf(e)
|
|
if t == nil {
|
|
return false
|
|
}
|
|
|
|
tb, _ := t.Underlying().(*types.Basic)
|
|
|
|
return tb != nil && tb.Kind() == types.String
|
|
}
|
|
|
|
func (w *lintStringInt) isIntExpression(es []ast.Expr) bool {
|
|
if len(es) != 1 {
|
|
return false
|
|
}
|
|
|
|
t := w.file.Pkg.TypeOf(es[0])
|
|
if t == nil {
|
|
return false
|
|
}
|
|
|
|
ut, _ := t.Underlying().(*types.Basic)
|
|
if ut == nil || ut.Info()&types.IsInteger == 0 {
|
|
return false
|
|
}
|
|
|
|
switch ut.Kind() {
|
|
case types.Byte, types.Rune, types.UntypedRune:
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|