mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-12-05 02:54:46 +01:00
71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
|
package rule
|
||
|
|
||
|
import (
|
||
|
"go/ast"
|
||
|
|
||
|
"github.com/mgechev/revive/lint"
|
||
|
)
|
||
|
|
||
|
// CallToGCRule lints calls to the garbage collector.
|
||
|
type CallToGCRule struct{}
|
||
|
|
||
|
// Apply applies the rule to given file.
|
||
|
func (r *CallToGCRule) Apply(file *lint.File, _ lint.Arguments) []lint.Failure {
|
||
|
var failures []lint.Failure
|
||
|
onFailure := func(failure lint.Failure) {
|
||
|
failures = append(failures, failure)
|
||
|
}
|
||
|
|
||
|
var gcTriggeringFunctions = map[string]map[string]bool{
|
||
|
"runtime": map[string]bool{"GC": true},
|
||
|
}
|
||
|
|
||
|
w := lintCallToGC{onFailure, gcTriggeringFunctions}
|
||
|
ast.Walk(w, file.AST)
|
||
|
|
||
|
return failures
|
||
|
}
|
||
|
|
||
|
// Name returns the rule name.
|
||
|
func (r *CallToGCRule) Name() string {
|
||
|
return "call-to-gc"
|
||
|
}
|
||
|
|
||
|
type lintCallToGC struct {
|
||
|
onFailure func(lint.Failure)
|
||
|
gcTriggeringFunctions map[string]map[string]bool
|
||
|
}
|
||
|
|
||
|
func (w lintCallToGC) Visit(node ast.Node) ast.Visitor {
|
||
|
ce, ok := node.(*ast.CallExpr)
|
||
|
if !ok {
|
||
|
return w // nothing to do, the node is not a call
|
||
|
}
|
||
|
|
||
|
fc, ok := ce.Fun.(*ast.SelectorExpr)
|
||
|
if !ok {
|
||
|
return nil // nothing to do, the call is not of the form pkg.func(...)
|
||
|
}
|
||
|
|
||
|
id, ok := fc.X.(*ast.Ident)
|
||
|
|
||
|
if !ok {
|
||
|
return nil // in case X is not an id (it should be!)
|
||
|
}
|
||
|
|
||
|
fn := fc.Sel.Name
|
||
|
pkg := id.Name
|
||
|
if !w.gcTriggeringFunctions[pkg][fn] {
|
||
|
return nil // it isn't a call to a GC triggering function
|
||
|
}
|
||
|
|
||
|
w.onFailure(lint.Failure{
|
||
|
Confidence: 1,
|
||
|
Node: node,
|
||
|
Category: "bad practice",
|
||
|
Failure: "explicit call to the garbage collector",
|
||
|
})
|
||
|
|
||
|
return w
|
||
|
}
|