58
vendor/honnef.co/go/tools/lint/lintdsl/lintdsl.go
vendored
Normal file
58
vendor/honnef.co/go/tools/lint/lintdsl/lintdsl.go
vendored
Normal file
@@ -0,0 +1,58 @@
|
||||
// Package lintdsl provides helpers for implementing static analysis
|
||||
// checks. Dot-importing this package is encouraged.
|
||||
package lintdsl
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"go/ast"
|
||||
"go/format"
|
||||
|
||||
"golang.org/x/tools/go/analysis"
|
||||
"honnef.co/go/tools/pattern"
|
||||
)
|
||||
|
||||
func Inspect(node ast.Node, fn func(node ast.Node) bool) {
|
||||
if node == nil {
|
||||
return
|
||||
}
|
||||
ast.Inspect(node, fn)
|
||||
}
|
||||
|
||||
func Match(pass *analysis.Pass, q pattern.Pattern, node ast.Node) (*pattern.Matcher, bool) {
|
||||
// Note that we ignore q.Relevant – callers of Match usually use
|
||||
// AST inspectors that already filter on nodes we're interested
|
||||
// in.
|
||||
m := &pattern.Matcher{TypesInfo: pass.TypesInfo}
|
||||
ok := m.Match(q.Root, node)
|
||||
return m, ok
|
||||
}
|
||||
|
||||
func MatchAndEdit(pass *analysis.Pass, before, after pattern.Pattern, node ast.Node) (*pattern.Matcher, []analysis.TextEdit, bool) {
|
||||
m, ok := Match(pass, before, node)
|
||||
if !ok {
|
||||
return m, nil, false
|
||||
}
|
||||
r := pattern.NodeToAST(after.Root, m.State)
|
||||
buf := &bytes.Buffer{}
|
||||
format.Node(buf, pass.Fset, r)
|
||||
edit := []analysis.TextEdit{{
|
||||
Pos: node.Pos(),
|
||||
End: node.End(),
|
||||
NewText: buf.Bytes(),
|
||||
}}
|
||||
return m, edit, true
|
||||
}
|
||||
|
||||
func Selector(x, sel string) *ast.SelectorExpr {
|
||||
return &ast.SelectorExpr{
|
||||
X: &ast.Ident{Name: x},
|
||||
Sel: &ast.Ident{Name: sel},
|
||||
}
|
||||
}
|
||||
|
||||
// ExhaustiveTypeSwitch panics when called. It can be used to ensure
|
||||
// that type switches are exhaustive.
|
||||
func ExhaustiveTypeSwitch(v interface{}) {
|
||||
panic(fmt.Sprintf("internal error: unhandled case %T", v))
|
||||
}
|
||||
Reference in New Issue
Block a user