gotools/gopls/internal/util/astutil/util.go

// UnpackRecv unpacks a receiver type expression, reporting whether it is a
// pointer recever, along with the type name identifier and any receiver type
// parameter identifiers.
//
// Copied (with modifications) from go/types.
func UnpackRecv(rtyp ast.Expr) (ptr bool, rname *ast.Ident, tparams []*ast.Ident) { … }

// NodeContains returns true if a node encloses a given position pos.
// The end point will also be inclusive, which will to allow hovering when the
// cursor is behind some nodes.
//
// Precondition: n must not be nil.
func NodeContains(n ast.Node, pos token.Pos) bool { … }