all: update vendored golang.org/x/tools
Pull in CL 358034 (and some more changes with passing tests) with:
go get -d golang.org/x/tools@f916b54
go mod tidy
go mod vendor
This teaches x/tools/cmd/bundle and the package loader it uses about
the new export data version.
Fixes #49159.
Change-Id: Icc36e77e602b1cd2da03708f20d05a66fcf693cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/358620
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
diff --git a/src/cmd/go.mod b/src/cmd/go.mod
index b2ec091..e6fdc90 100644
--- a/src/cmd/go.mod
+++ b/src/cmd/go.mod
@@ -8,7 +8,7 @@
golang.org/x/mod v0.5.1-0.20210913215816-37dd6891021a
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b
- golang.org/x/tools v0.1.8-0.20211011152358-18fa84021695
+ golang.org/x/tools v0.1.8-0.20211025211149-f916b54a1784
)
require (
diff --git a/src/cmd/go.sum b/src/cmd/go.sum
index ff8df7b..4993128 100644
--- a/src/cmd/go.sum
+++ b/src/cmd/go.sum
@@ -18,7 +18,7 @@
golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b h1:9zKuko04nR4gjZ4+DNjHqRlAJqbJETHwiNKDqTfOjfE=
golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/tools v0.1.8-0.20211011152358-18fa84021695 h1:H+g8CC6T05IOoW6fXaWvb5N3XBYQElWwgDS/7Yxg8dU=
-golang.org/x/tools v0.1.8-0.20211011152358-18fa84021695/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
+golang.org/x/tools v0.1.8-0.20211025211149-f916b54a1784 h1:+xP+QoP2SEPgbn+07I/yJTzP+gavj0XKGS6+JU5tlck=
+golang.org/x/tools v0.1.8-0.20211025211149-f916b54a1784/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/composite/composite.go b/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/composite/composite.go
index 4c3ac66..025952e 100644
--- a/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/composite/composite.go
+++ b/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/composite/composite.go
@@ -14,6 +14,7 @@
"golang.org/x/tools/go/analysis"
"golang.org/x/tools/go/analysis/passes/inspect"
"golang.org/x/tools/go/ast/inspector"
+ "golang.org/x/tools/internal/typeparams"
)
const Doc = `check for unkeyed composite literals
@@ -67,41 +68,52 @@
// skip whitelisted types
return
}
- under := typ.Underlying()
- for {
- ptr, ok := under.(*types.Pointer)
- if !ok {
- break
+ terms, err := typeparams.StructuralTerms(typ)
+ if err != nil {
+ return // invalid type
+ }
+ for _, term := range terms {
+ under := deref(term.Type().Underlying())
+ if _, ok := under.(*types.Struct); !ok {
+ // skip non-struct composite literals
+ continue
}
- under = ptr.Elem().Underlying()
- }
- if _, ok := under.(*types.Struct); !ok {
- // skip non-struct composite literals
- return
- }
- if isLocalType(pass, typ) {
- // allow unkeyed locally defined composite literal
- return
- }
-
- // check if the CompositeLit contains an unkeyed field
- allKeyValue := true
- for _, e := range cl.Elts {
- if _, ok := e.(*ast.KeyValueExpr); !ok {
- allKeyValue = false
- break
+ if isLocalType(pass, term.Type()) {
+ // allow unkeyed locally defined composite literal
+ continue
}
- }
- if allKeyValue {
- // all the composite literal fields are keyed
+
+ // check if the CompositeLit contains an unkeyed field
+ allKeyValue := true
+ for _, e := range cl.Elts {
+ if _, ok := e.(*ast.KeyValueExpr); !ok {
+ allKeyValue = false
+ break
+ }
+ }
+ if allKeyValue {
+ // all the composite literal fields are keyed
+ continue
+ }
+
+ pass.ReportRangef(cl, "%s composite literal uses unkeyed fields", typeName)
return
}
-
- pass.ReportRangef(cl, "%s composite literal uses unkeyed fields", typeName)
})
return nil, nil
}
+func deref(typ types.Type) types.Type {
+ for {
+ ptr, ok := typ.(*types.Pointer)
+ if !ok {
+ break
+ }
+ typ = ptr.Elem().Underlying()
+ }
+ return typ
+}
+
func isLocalType(pass *analysis.Pass, typ types.Type) bool {
switch x := typ.(type) {
case *types.Struct:
@@ -112,6 +124,8 @@
case *types.Named:
// names in package foo are local to foo_test too
return strings.TrimSuffix(x.Obj().Pkg().Path(), "_test") == strings.TrimSuffix(pass.Pkg.Path(), "_test")
+ case *typeparams.TypeParam:
+ return strings.TrimSuffix(x.Obj().Pkg().Path(), "_test") == strings.TrimSuffix(pass.Pkg.Path(), "_test")
}
return false
}
diff --git a/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/printf/printf.go b/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/printf/printf.go
index de0369a..4169d30 100644
--- a/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/printf/printf.go
+++ b/src/cmd/vendor/golang.org/x/tools/go/analysis/passes/printf/printf.go
@@ -834,8 +834,9 @@
}
// Could current arg implement fmt.Formatter?
+ // Skip check for the %w verb, which requires an error.
formatter := false
- if state.argNum < len(call.Args) {
+ if v.typ != argError && state.argNum < len(call.Args) {
if tv, ok := pass.TypesInfo.Types[call.Args[state.argNum]]; ok {
formatter = isFormatter(tv.Type)
}
diff --git a/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go b/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
index 5424489..b539866 100644
--- a/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
+++ b/src/cmd/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
@@ -51,6 +51,7 @@
"golang.org/x/tools/go/analysis"
"golang.org/x/tools/go/analysis/internal/analysisflags"
"golang.org/x/tools/go/analysis/internal/facts"
+ "golang.org/x/tools/internal/typeparams"
)
// A Config describes a compilation unit to be analyzed.
@@ -233,6 +234,8 @@
Scopes: make(map[ast.Node]*types.Scope),
Selections: make(map[*ast.SelectorExpr]*types.Selection),
}
+ typeparams.InitInstanceInfo(info)
+
pkg, err := tc.Check(cfg.ImportPath, fset, files, info)
if err != nil {
if cfg.SucceedOnTypecheckFailure {
diff --git a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/normalize.go b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/normalize.go
new file mode 100644
index 0000000..2937350
--- /dev/null
+++ b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/normalize.go
@@ -0,0 +1,212 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package typeparams
+
+import (
+ "errors"
+ "fmt"
+ "go/types"
+ "os"
+ "strings"
+)
+
+//go:generate go run copytermlist.go
+
+const debug = false
+
+// NormalizeInterface returns the normal form of the interface iface, or nil if iface
+// has an empty type set (i.e. there are no types that satisfy iface). If the
+// resulting interface is non-nil, it will be identical to iface.
+//
+// An error is returned if the interface type is invalid, or too complicated to
+// reasonably normalize (for example, contains unions with more than a hundred
+// terms).
+//
+// An interface is in normal form if and only if:
+// - it has 0 or 1 embedded types.
+// - its embedded type is either a types.Union or has a concrete
+// (non-interface) underlying type
+// - if the embedded type is a union, each term of the union has a concrete
+// underlying type, and no terms may be removed without changing the type set
+// of the interface
+func NormalizeInterface(iface *types.Interface) (*types.Interface, error) {
+ var methods []*types.Func
+ for i := 0; i < iface.NumMethods(); i++ {
+ methods = append(methods, iface.Method(i))
+ }
+ var embeddeds []types.Type
+ tset, err := computeTermSet(iface, make(map[types.Type]*termSet), 0)
+ if err != nil {
+ return nil, err
+ }
+ switch {
+ case tset.terms.isEmpty():
+ // Special case: as documented
+ return nil, nil
+
+ case tset.terms.isAll():
+ // No embeddeds.
+
+ case len(tset.terms) == 1:
+ if !tset.terms[0].tilde {
+ embeddeds = append(embeddeds, tset.terms[0].typ)
+ break
+ }
+ fallthrough
+ default:
+ var terms []*Term
+ for _, term := range tset.terms {
+ terms = append(terms, NewTerm(term.tilde, term.typ))
+ }
+ embeddeds = append(embeddeds, NewUnion(terms))
+ }
+
+ return types.NewInterfaceType(methods, embeddeds), nil
+}
+
+var ErrEmptyTypeSet = errors.New("empty type set")
+
+// StructuralTerms returns the normalized structural type restrictions of a
+// type, if any. For types that are not type parameters, it returns term slice
+// containing a single non-tilde term holding the given type. For type
+// parameters, it returns the normalized term list of the type parameter's
+// constraint. See NormalizeInterface for more information on the normal form
+// of a constraint interface.
+//
+// StructuralTerms returns an error if the structural term list cannot be
+// computed. If the type set of typ is empty, it returns ErrEmptyTypeSet.
+func StructuralTerms(typ types.Type) ([]*Term, error) {
+ switch typ := typ.(type) {
+ case *TypeParam:
+ iface, _ := typ.Constraint().(*types.Interface)
+ if iface == nil {
+ return nil, fmt.Errorf("constraint is %T, not *types.Interface", typ)
+ }
+ tset, err := computeTermSet(iface, make(map[types.Type]*termSet), 0)
+ if err != nil {
+ return nil, err
+ }
+ if tset.terms.isEmpty() {
+ return nil, ErrEmptyTypeSet
+ }
+ if tset.terms.isAll() {
+ return nil, nil
+ }
+ var terms []*Term
+ for _, term := range tset.terms {
+ terms = append(terms, NewTerm(term.tilde, term.typ))
+ }
+ return terms, nil
+ default:
+ return []*Term{NewTerm(false, typ)}, nil
+ }
+}
+
+// A termSet holds the normalized set of terms for a given type.
+//
+// The name termSet is intentionally distinct from 'type set': a type set is
+// all types that implement a type (and includes method restrictions), whereas
+// a term set just represents the structural restrictions on a type.
+type termSet struct {
+ complete bool
+ terms termlist
+}
+
+func indentf(depth int, format string, args ...interface{}) {
+ fmt.Fprintf(os.Stderr, strings.Repeat(".", depth)+format+"\n", args...)
+}
+
+func computeTermSet(t types.Type, seen map[types.Type]*termSet, depth int) (res *termSet, err error) {
+ if t == nil {
+ panic("nil type")
+ }
+
+ if debug {
+ indentf(depth, "%s", t.String())
+ defer func() {
+ if err != nil {
+ indentf(depth, "=> %s", err)
+ } else {
+ indentf(depth, "=> %s", res.terms.String())
+ }
+ }()
+ }
+
+ const maxTermCount = 100
+ if tset, ok := seen[t]; ok {
+ if !tset.complete {
+ return nil, fmt.Errorf("cycle detected in the declaration of %s", t)
+ }
+ return tset, nil
+ }
+
+ // Mark the current type as seen to avoid infinite recursion.
+ tset := new(termSet)
+ defer func() {
+ tset.complete = true
+ }()
+ seen[t] = tset
+
+ switch u := t.Underlying().(type) {
+ case *types.Interface:
+ // The term set of an interface is the intersection of the term sets of its
+ // embedded types.
+ tset.terms = allTermlist
+ for i := 0; i < u.NumEmbeddeds(); i++ {
+ embedded := u.EmbeddedType(i)
+ if _, ok := embedded.Underlying().(*TypeParam); ok {
+ return nil, fmt.Errorf("invalid embedded type %T", embedded)
+ }
+ tset2, err := computeTermSet(embedded, seen, depth+1)
+ if err != nil {
+ return nil, err
+ }
+ tset.terms = tset.terms.intersect(tset2.terms)
+ }
+ case *Union:
+ // The term set of a union is the union of term sets of its terms.
+ tset.terms = nil
+ for i := 0; i < u.Len(); i++ {
+ t := u.Term(i)
+ var terms termlist
+ switch t.Type().Underlying().(type) {
+ case *types.Interface:
+ tset2, err := computeTermSet(t.Type(), seen, depth+1)
+ if err != nil {
+ return nil, err
+ }
+ terms = tset2.terms
+ case *TypeParam, *Union:
+ // A stand-alone type parameter or union is not permitted as union
+ // term.
+ return nil, fmt.Errorf("invalid union term %T", t)
+ default:
+ if t.Type() == types.Typ[types.Invalid] {
+ continue
+ }
+ terms = termlist{{t.Tilde(), t.Type()}}
+ }
+ tset.terms = tset.terms.union(terms)
+ if len(tset.terms) > maxTermCount {
+ return nil, fmt.Errorf("exceeded max term count %d", maxTermCount)
+ }
+ }
+ case *TypeParam:
+ panic("unreachable")
+ default:
+ // For all other types, the term set is just a single non-tilde term
+ // holding the type itself.
+ if u != types.Typ[types.Invalid] {
+ tset.terms = termlist{{false, t}}
+ }
+ }
+ return tset, nil
+}
+
+// under is a facade for the go/types internal function of the same name. It is
+// used by typeterm.go.
+func under(t types.Type) types.Type {
+ return t.Underlying()
+}
diff --git a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/termlist.go b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/termlist.go
new file mode 100644
index 0000000..10857d5
--- /dev/null
+++ b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/termlist.go
@@ -0,0 +1,172 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by copytermlist.go DO NOT EDIT.
+
+package typeparams
+
+import (
+ "bytes"
+ "go/types"
+)
+
+// A termlist represents the type set represented by the union
+// t1 ∪ y2 ∪ ... tn of the type sets of the terms t1 to tn.
+// A termlist is in normal form if all terms are disjoint.
+// termlist operations don't require the operands to be in
+// normal form.
+type termlist []*term
+
+// allTermlist represents the set of all types.
+// It is in normal form.
+var allTermlist = termlist{new(term)}
+
+// String prints the termlist exactly (without normalization).
+func (xl termlist) String() string {
+ if len(xl) == 0 {
+ return "∅"
+ }
+ var buf bytes.Buffer
+ for i, x := range xl {
+ if i > 0 {
+ buf.WriteString(" ∪ ")
+ }
+ buf.WriteString(x.String())
+ }
+ return buf.String()
+}
+
+// isEmpty reports whether the termlist xl represents the empty set of types.
+func (xl termlist) isEmpty() bool {
+ // If there's a non-nil term, the entire list is not empty.
+ // If the termlist is in normal form, this requires at most
+ // one iteration.
+ for _, x := range xl {
+ if x != nil {
+ return false
+ }
+ }
+ return true
+}
+
+// isAll reports whether the termlist xl represents the set of all types.
+func (xl termlist) isAll() bool {
+ // If there's a π€ term, the entire list is π€.
+ // If the termlist is in normal form, this requires at most
+ // one iteration.
+ for _, x := range xl {
+ if x != nil && x.typ == nil {
+ return true
+ }
+ }
+ return false
+}
+
+// norm returns the normal form of xl.
+func (xl termlist) norm() termlist {
+ // Quadratic algorithm, but good enough for now.
+ // TODO(gri) fix asymptotic performance
+ used := make([]bool, len(xl))
+ var rl termlist
+ for i, xi := range xl {
+ if xi == nil || used[i] {
+ continue
+ }
+ for j := i + 1; j < len(xl); j++ {
+ xj := xl[j]
+ if xj == nil || used[j] {
+ continue
+ }
+ if u1, u2 := xi.union(xj); u2 == nil {
+ // If we encounter a π€ term, the entire list is π€.
+ // Exit early.
+ // (Note that this is not just an optimization;
+ // if we continue, we may end up with a π€ term
+ // and other terms and the result would not be
+ // in normal form.)
+ if u1.typ == nil {
+ return allTermlist
+ }
+ xi = u1
+ used[j] = true // xj is now unioned into xi - ignore it in future iterations
+ }
+ }
+ rl = append(rl, xi)
+ }
+ return rl
+}
+
+// If the type set represented by xl is specified by a single (non-π€) term,
+// structuralType returns that type. Otherwise it returns nil.
+func (xl termlist) structuralType() types.Type {
+ if nl := xl.norm(); len(nl) == 1 {
+ return nl[0].typ // if nl.isAll() then typ is nil, which is ok
+ }
+ return nil
+}
+
+// union returns the union xl ∪ yl.
+func (xl termlist) union(yl termlist) termlist {
+ return append(xl, yl...).norm()
+}
+
+// intersect returns the intersection xl ∩ yl.
+func (xl termlist) intersect(yl termlist) termlist {
+ if xl.isEmpty() || yl.isEmpty() {
+ return nil
+ }
+
+ // Quadratic algorithm, but good enough for now.
+ // TODO(gri) fix asymptotic performance
+ var rl termlist
+ for _, x := range xl {
+ for _, y := range yl {
+ if r := x.intersect(y); r != nil {
+ rl = append(rl, r)
+ }
+ }
+ }
+ return rl.norm()
+}
+
+// equal reports whether xl and yl represent the same type set.
+func (xl termlist) equal(yl termlist) bool {
+ // TODO(gri) this should be more efficient
+ return xl.subsetOf(yl) && yl.subsetOf(xl)
+}
+
+// includes reports whether t ∈ xl.
+func (xl termlist) includes(t types.Type) bool {
+ for _, x := range xl {
+ if x.includes(t) {
+ return true
+ }
+ }
+ return false
+}
+
+// supersetOf reports whether y ⊆ xl.
+func (xl termlist) supersetOf(y *term) bool {
+ for _, x := range xl {
+ if y.subsetOf(x) {
+ return true
+ }
+ }
+ return false
+}
+
+// subsetOf reports whether xl ⊆ yl.
+func (xl termlist) subsetOf(yl termlist) bool {
+ if yl.isEmpty() {
+ return xl.isEmpty()
+ }
+
+ // each term x of xl must be a subset of yl
+ for _, x := range xl {
+ if !yl.supersetOf(x) {
+ return false // x is not a subset yl
+ }
+ }
+ return true
+}
diff --git a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go
index d22899d..6ad3a43 100644
--- a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go
+++ b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go
@@ -132,6 +132,15 @@
return true
}
+// IsImplicit returns false, as no interfaces are implicit at this Go version.
+func IsImplicit(*types.Interface) bool {
+ return false
+}
+
+// MarkImplicit does nothing, because this Go version does not have implicit
+// interfaces.
+func MarkImplicit(*types.Interface) {}
+
// ForNamed returns an empty type parameter list, as type parameters are not
// supported at this Go version.
func ForNamed(*types.Named) *TypeParamList {
@@ -155,19 +164,25 @@
return named
}
-// Term is a placeholder type, as type parameters are not supported at this Go
-// version. Its methods panic on use.
-type Term struct{}
+// Term holds information about a structural type restriction.
+type Term struct {
+ tilde bool
+ typ types.Type
+}
-func (*Term) Tilde() bool { unsupported(); return false }
-func (*Term) Type() types.Type { unsupported(); return nil }
-func (*Term) String() string { unsupported(); return "" }
-func (*Term) Underlying() types.Type { unsupported(); return nil }
+func (m *Term) Tilde() bool { return m.tilde }
+func (m *Term) Type() types.Type { return m.typ }
+func (m *Term) String() string {
+ pre := ""
+ if m.tilde {
+ pre = "~"
+ }
+ return pre + m.typ.String()
+}
// NewTerm is unsupported at this Go version, and panics.
func NewTerm(tilde bool, typ types.Type) *Term {
- unsupported()
- return nil
+ return &Term{tilde, typ}
}
// Union is a placeholder type, as type parameters are not supported at this Go
@@ -186,9 +201,16 @@
// InitInstanceInfo is a noop at this Go version.
func InitInstanceInfo(*types.Info) {}
-// GetInstance returns nothing, as type parameters are not supported at this Go
-// version.
-func GetInstance(*types.Info, *ast.Ident) (*TypeList, types.Type) { return nil, nil }
+// Instance is a placeholder type, as type parameters are not supported at this
+// Go version.
+type Instance struct {
+ TypeArgs *TypeList
+ Type types.Type
+}
+
+// GetInstances returns a nil map, as type parameters are not supported at this
+// Go version.
+func GetInstances(info *types.Info) map[*ast.Ident]Instance { return nil }
// Context is a placeholder type, as type parameters are not supported at
// this Go version.
diff --git a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go
index a252183..e45896f 100644
--- a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go
+++ b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go
@@ -125,6 +125,16 @@
return iface.IsMethodSet()
}
+// IsImplicit calls iface.IsImplicit().
+func IsImplicit(iface *types.Interface) bool {
+ return iface.IsImplicit()
+}
+
+// MarkImplicit calls iface.MarkImplicit().
+func MarkImplicit(iface *types.Interface) {
+ iface.MarkImplicit()
+}
+
// ForNamed extracts the (possibly empty) type parameter object list from
// named.
func ForNamed(named *types.Named) *TypeParamList {
@@ -169,15 +179,12 @@
info.Instances = make(map[*ast.Ident]types.Instance)
}
-// GetInstance extracts information about the instantiation occurring at the
-// identifier id. id should be the identifier denoting a parameterized type or
-// function in an instantiation expression or function call.
-func GetInstance(info *types.Info, id *ast.Ident) (*TypeList, types.Type) {
- if info.Instances != nil {
- inf := info.Instances[id]
- return inf.TypeArgs, inf.Type
- }
- return nil, nil
+// Instance is an alias for types.Instance.
+type Instance = types.Instance
+
+// GetInstances returns info.Instances.
+func GetInstances(info *types.Info) map[*ast.Ident]Instance {
+ return info.Instances
}
// Context is an alias for types.Context.
diff --git a/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeterm.go b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeterm.go
new file mode 100644
index 0000000..7ddee28
--- /dev/null
+++ b/src/cmd/vendor/golang.org/x/tools/internal/typeparams/typeterm.go
@@ -0,0 +1,170 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by copytermlist.go DO NOT EDIT.
+
+package typeparams
+
+import "go/types"
+
+// A term describes elementary type sets:
+//
+// ∅: (*term)(nil) == ∅ // set of no types (empty set)
+// π€: &term{} == π€ // set of all types (π€niverse)
+// T: &term{false, T} == {T} // set of type T
+// ~t: &term{true, t} == {t' | under(t') == t} // set of types with underlying type t
+//
+type term struct {
+ tilde bool // valid if typ != nil
+ typ types.Type
+}
+
+func (x *term) String() string {
+ switch {
+ case x == nil:
+ return "∅"
+ case x.typ == nil:
+ return "π€"
+ case x.tilde:
+ return "~" + x.typ.String()
+ default:
+ return x.typ.String()
+ }
+}
+
+// equal reports whether x and y represent the same type set.
+func (x *term) equal(y *term) bool {
+ // easy cases
+ switch {
+ case x == nil || y == nil:
+ return x == y
+ case x.typ == nil || y.typ == nil:
+ return x.typ == y.typ
+ }
+ // ∅ ⊂ x, y ⊂ π€
+
+ return x.tilde == y.tilde && types.Identical(x.typ, y.typ)
+}
+
+// union returns the union x ∪ y: zero, one, or two non-nil terms.
+func (x *term) union(y *term) (_, _ *term) {
+ // easy cases
+ switch {
+ case x == nil && y == nil:
+ return nil, nil // ∅ ∪ ∅ == ∅
+ case x == nil:
+ return y, nil // ∅ ∪ y == y
+ case y == nil:
+ return x, nil // x ∪ ∅ == x
+ case x.typ == nil:
+ return x, nil // π€ ∪ y == π€
+ case y.typ == nil:
+ return y, nil // x ∪ π€ == π€
+ }
+ // ∅ ⊂ x, y ⊂ π€
+
+ if x.disjoint(y) {
+ return x, y // x ∪ y == (x, y) if x ∩ y == ∅
+ }
+ // x.typ == y.typ
+
+ // ~t ∪ ~t == ~t
+ // ~t ∪ T == ~t
+ // T ∪ ~t == ~t
+ // T ∪ T == T
+ if x.tilde || !y.tilde {
+ return x, nil
+ }
+ return y, nil
+}
+
+// intersect returns the intersection x ∩ y.
+func (x *term) intersect(y *term) *term {
+ // easy cases
+ switch {
+ case x == nil || y == nil:
+ return nil // ∅ ∩ y == ∅ and ∩ ∅ == ∅
+ case x.typ == nil:
+ return y // π€ ∩ y == y
+ case y.typ == nil:
+ return x // x ∩ π€ == x
+ }
+ // ∅ ⊂ x, y ⊂ π€
+
+ if x.disjoint(y) {
+ return nil // x ∩ y == ∅ if x ∩ y == ∅
+ }
+ // x.typ == y.typ
+
+ // ~t ∩ ~t == ~t
+ // ~t ∩ T == T
+ // T ∩ ~t == T
+ // T ∩ T == T
+ if !x.tilde || y.tilde {
+ return x
+ }
+ return y
+}
+
+// includes reports whether t ∈ x.
+func (x *term) includes(t types.Type) bool {
+ // easy cases
+ switch {
+ case x == nil:
+ return false // t ∈ ∅ == false
+ case x.typ == nil:
+ return true // t ∈ π€ == true
+ }
+ // ∅ ⊂ x ⊂ π€
+
+ u := t
+ if x.tilde {
+ u = under(u)
+ }
+ return types.Identical(x.typ, u)
+}
+
+// subsetOf reports whether x ⊆ y.
+func (x *term) subsetOf(y *term) bool {
+ // easy cases
+ switch {
+ case x == nil:
+ return true // ∅ ⊆ y == true
+ case y == nil:
+ return false // x ⊆ ∅ == false since x != ∅
+ case y.typ == nil:
+ return true // x ⊆ π€ == true
+ case x.typ == nil:
+ return false // π€ ⊆ y == false since y != π€
+ }
+ // ∅ ⊂ x, y ⊂ π€
+
+ if x.disjoint(y) {
+ return false // x ⊆ y == false if x ∩ y == ∅
+ }
+ // x.typ == y.typ
+
+ // ~t ⊆ ~t == true
+ // ~t ⊆ T == false
+ // T ⊆ ~t == true
+ // T ⊆ T == true
+ return !x.tilde || y.tilde
+}
+
+// disjoint reports whether x ∩ y == ∅.
+// x.typ and y.typ must not be nil.
+func (x *term) disjoint(y *term) bool {
+ if debug && (x.typ == nil || y.typ == nil) {
+ panic("invalid argument(s)")
+ }
+ ux := x.typ
+ if y.tilde {
+ ux = under(ux)
+ }
+ uy := y.typ
+ if x.tilde {
+ uy = under(uy)
+ }
+ return !types.Identical(ux, uy)
+}
diff --git a/src/cmd/vendor/modules.txt b/src/cmd/vendor/modules.txt
index e0e116a..ecb170d 100644
--- a/src/cmd/vendor/modules.txt
+++ b/src/cmd/vendor/modules.txt
@@ -51,7 +51,7 @@
# golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b
## explicit; go 1.17
golang.org/x/term
-# golang.org/x/tools v0.1.8-0.20211011152358-18fa84021695
+# golang.org/x/tools v0.1.8-0.20211025211149-f916b54a1784
## explicit; go 1.17
golang.org/x/tools/cover
golang.org/x/tools/go/analysis
