func formatMember(obj types.Object, maxname int) string {
var buf bytes.Buffer
fmt.Fprintf(&buf, "%-5s %-*s", tokenOf(obj), maxname, obj.Name())
switch obj := obj.(type) {
case *types.Const:
fmt.Fprintf(&buf, " %s = %s", types.TypeString(obj.Pkg(), obj.Type()), obj.Val().String())
case *types.Func:
fmt.Fprintf(&buf, " %s", types.TypeString(obj.Pkg(), obj.Type()))
case *types.TypeName:
// Abbreviate long aggregate type names.
var abbrev string
switch t := obj.Type().Underlying().(type) {
case *types.Interface:
if t.NumMethods() > 1 {
abbrev = "interface{...}"
}
case *types.Struct:
if t.NumFields() > 1 {
abbrev = "struct{...}"
}
}
if abbrev == "" {
fmt.Fprintf(&buf, " %s", types.TypeString(obj.Pkg(), obj.Type().Underlying()))
} else {
fmt.Fprintf(&buf, " %s", abbrev)
}
case *types.Var:
fmt.Fprintf(&buf, " %s", types.TypeString(obj.Pkg(), obj.Type()))
}
return buf.String()
}
func (r *freevarsResult) display(printf printfFunc) {
if len(r.refs) == 0 {
printf(r.qpos, "No free identifiers.")
} else {
printf(r.qpos, "Free identifiers:")
for _, ref := range r.refs {
// Avoid printing "type T T".
var typstr string
if ref.kind != "type" {
typstr = " " + types.TypeString(r.qpos.info.Pkg, ref.typ)
}
printf(ref.obj, "%s %s%s", ref.kind, ref.ref, typstr)
}
}
}
// prettyFunc pretty-prints fn for the user interface.
// TODO(adonovan): return HTML so we have more markup freedom.
func prettyFunc(this *types.Package, fn *ssa.Function) string {
if fn.Parent() != nil {
return fmt.Sprintf("%s in %s",
types.TypeString(this, fn.Signature),
prettyFunc(this, fn.Parent()))
}
if fn.Synthetic != "" && fn.Name() == "init" {
// (This is the actual initializer, not a declared 'func init').
if fn.Pkg.Object == this {
return "package initializer"
}
return fmt.Sprintf("%q package initializer", fn.Pkg.Object.Path())
}
return fn.RelString(this)
}
func printResult(res *rta.Result, from *types.Package) string {
var buf bytes.Buffer
writeSorted := func(ss []string) {
sort.Strings(ss)
for _, s := range ss {
fmt.Fprintf(&buf, " %s\n", s)
}
}
buf.WriteString("Dynamic calls\n")
var edges []string
callgraph.GraphVisitEdges(res.CallGraph, func(e *callgraph.Edge) error {
if strings.Contains(e.Description(), "dynamic") {
edges = append(edges, fmt.Sprintf("%s --> %s",
e.Caller.Func.RelString(from),
e.Callee.Func.RelString(from)))
}
return nil
})
writeSorted(edges)
buf.WriteString("Reachable functions\n")
var reachable []string
for f := range res.Reachable {
reachable = append(reachable, f.RelString(from))
}
writeSorted(reachable)
buf.WriteString("Reflect types\n")
var rtypes []string
res.RuntimeTypes.Iterate(func(key types.Type, value interface{}) {
if value == false { // accessible to reflection
rtypes = append(rtypes, types.TypeString(from, key))
}
})
writeSorted(rtypes)
return strings.TrimSpace(buf.String())
}
func relType(t types.Type, from *types.Package) string {
return types.TypeString(from, t)
}
// TypeString prints type T relative to the query position.
func (qpos *QueryPos) TypeString(T types.Type) string {
return types.TypeString(qpos.info.Pkg, T)
}
func (a *analysis) namedType(obj *types.TypeName, implements map[*types.Named]implementsFacts) {
this := obj.Pkg()
T := obj.Type().(*types.Named)
v := &TypeInfoJSON{
Name: obj.Name(),
Size: sizes.Sizeof(T),
Align: sizes.Alignof(T),
Methods: []anchorJSON{}, // (JS wants non-nil)
}
// addFact adds the fact "is implemented by T" (by) or
// "implements T" (!by) to group.
addFact := func(group *implGroupJSON, T types.Type, by bool) {
Tobj := deref(T).(*types.Named).Obj()
var byKind string
if by {
// Show underlying kind of implementing type,
// e.g. "slice", "array", "struct".
s := reflect.TypeOf(T.Underlying()).String()
byKind = strings.ToLower(strings.TrimPrefix(s, "*types."))
}
group.Facts = append(group.Facts, implFactJSON{
ByKind: byKind,
Other: anchorJSON{
Href: a.posURL(Tobj.Pos(), len(Tobj.Name())),
Text: types.TypeString(this, T),
},
})
}
// IMPLEMENTS
if r, ok := implements[T]; ok {
if isInterface(T) {
// "T is implemented by <conc>" ...
// "T is implemented by <iface>"...
// "T implements <iface>"...
group := implGroupJSON{
Descr: types.TypeString(this, T),
}
// Show concrete types first; use two passes.
for _, sub := range r.to {
if !isInterface(sub) {
addFact(&group, sub, true)
}
}
for _, sub := range r.to {
if isInterface(sub) {
addFact(&group, sub, true)
}
}
for _, super := range r.from {
addFact(&group, super, false)
}
v.ImplGroups = append(v.ImplGroups, group)
} else {
// T is concrete.
if r.from != nil {
// "T implements <iface>"...
group := implGroupJSON{
Descr: types.TypeString(this, T),
}
for _, super := range r.from {
addFact(&group, super, false)
}
v.ImplGroups = append(v.ImplGroups, group)
}
if r.fromPtr != nil {
// "*C implements <iface>"...
group := implGroupJSON{
Descr: "*" + types.TypeString(this, T),
}
for _, psuper := range r.fromPtr {
addFact(&group, psuper, false)
}
v.ImplGroups = append(v.ImplGroups, group)
}
}
}
// METHOD SETS
for _, sel := range typeutil.IntuitiveMethodSet(T, &a.prog.MethodSets) {
meth := sel.Obj().(*types.Func)
pos := meth.Pos() // may be 0 for error.Error
v.Methods = append(v.Methods, anchorJSON{
Href: a.posURL(pos, len(meth.Name())),
Text: types.SelectionString(this, sel),
})
}
// Since there can be many specs per decl, we
// can't attach the link to the keyword 'type'
// (as we do with 'func'); we use the Ident.
fi, offset := a.fileAndOffset(obj.Pos())
fi.addLink(aLink{
start: offset,
end: offset + len(obj.Name()),
title: fmt.Sprintf("type info for %s", obj.Name()),
onclick: fmt.Sprintf("onClickTypeInfo(%d)", fi.addData(v)),
})
// Add info for exported package-level types to the package info.
if obj.Exported() && isPackageLevel(obj) {
// TODO(adonovan): this.Path() is not unique!
// It is possible to declare a non-test package called x_test.
a.result.pkgInfo(this.Path()).addType(v)
}
}