Exemplo n.º 1
0
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()
}
Exemplo n.º 2
0
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)
		}
	}
}
Exemplo n.º 3
0
// 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)
}
Exemplo n.º 4
0
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())
}
Exemplo n.º 5
0
func relType(t types.Type, from *types.Package) string {
	return types.TypeString(from, t)
}
Exemplo n.º 6
0
// TypeString prints type T relative to the query position.
func (qpos *QueryPos) TypeString(T types.Type) string {
	return types.TypeString(qpos.info.Pkg, T)
}
Exemplo n.º 7
0
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)
	}
}