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api.go
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api_test.go
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array.go
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assignments.go
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basic.go
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builtins.go
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builtins_test.go
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call.go
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chan.go
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check.go
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check_test.go
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context.go
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context_test.go
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conversions.go
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decl.go
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errorcodes.go
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errorcodes_test.go
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errors.go
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errors_test.go
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eval.go
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eval_test.go
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example_test.go
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expr.go
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exprstring.go
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exprstring_test.go
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gccgosizes.go
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gotype.go
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hilbert_test.go
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index.go
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infer.go
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initorder.go
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instantiate.go
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instantiate_test.go
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interface.go
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issues_test.go
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labels.go
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lookup.go
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main_test.go
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map.go
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methodset.go
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methodset_test.go
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mono.go
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mono_test.go
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named.go
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named_test.go
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object.go
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object_test.go
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objset.go
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operand.go
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package.go
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pointer.go
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predicates.go
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resolver.go
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resolver_test.go
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return.go
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scope.go
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selection.go
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self_test.go
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signature.go
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sizeof_test.go
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sizes.go
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sizes_test.go
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slice.go
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stdlib_test.go
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stmt.go
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struct.go
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subst.go
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termlist.go
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termlist_test.go
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testdata
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token_test.go
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tuple.go
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type.go
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typelists.go
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typeparam.go
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typeset.go
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typeset_test.go
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typestring.go
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typestring_test.go
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typeterm.go
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typeterm_test.go
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typexpr.go
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unify.go
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union.go
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universe.go
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validtype.go
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version.go
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Editing: resolver_test.go
Close
// Copyright 2011 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 types_test import ( "fmt" "go/ast" "go/importer" "go/parser" "go/token" "internal/testenv" "sort" "testing" . "go/types" ) type resolveTestImporter struct { importer ImporterFrom imported map[string]bool } func (imp *resolveTestImporter) Import(string) (*Package, error) { panic("should not be called") } func (imp *resolveTestImporter) ImportFrom(path, srcDir string, mode ImportMode) (*Package, error) { if mode != 0 { panic("mode must be 0") } if imp.importer == nil { imp.importer = importer.Default().(ImporterFrom) imp.imported = make(map[string]bool) } pkg, err := imp.importer.ImportFrom(path, srcDir, mode) if err != nil { return nil, err } imp.imported[path] = true return pkg, nil } func TestResolveIdents(t *testing.T) { testenv.MustHaveGoBuild(t) sources := []string{ ` package p import "fmt" import "math" const pi = math.Pi func sin(x float64) float64 { return math.Sin(x) } var Println = fmt.Println `, ` package p import "fmt" type errorStringer struct { fmt.Stringer; error } func f() string { _ = "foo" return fmt.Sprintf("%d", g()) } func g() (x int) { return } `, ` package p import . "go/parser" import "sync" func h() Mode { return ImportsOnly } var _, x int = 1, 2 func init() {} type T struct{ *sync.Mutex; a, b, c int} type I interface{ m() } var _ = T{a: 1, b: 2, c: 3} func (_ T) m() {} func (T) _() {} var i I var _ = i.m func _(s []int) { for i, x := range s { _, _ = i, x } } func _(x interface{}) { switch x := x.(type) { case int: _ = x } switch {} // implicit 'true' tag } `, ` package p type S struct{} func (T) _() {} func (T) _() {} `, ` package p func _() { L0: L1: goto L0 for { goto L1 } if true { goto L2 } L2: } `, } pkgnames := []string{ "fmt", "math", } // parse package files fset := token.NewFileSet() var files []*ast.File for i, src := range sources { f, err := parser.ParseFile(fset, fmt.Sprintf("sources[%d]", i), src, parser.DeclarationErrors) if err != nil { t.Fatal(err) } files = append(files, f) } // resolve and type-check package AST importer := new(resolveTestImporter) conf := Config{Importer: importer} uses := make(map[*ast.Ident]Object) defs := make(map[*ast.Ident]Object) _, err := conf.Check("testResolveIdents", fset, files, &Info{Defs: defs, Uses: uses}) if err != nil { t.Fatal(err) } // check that all packages were imported for _, name := range pkgnames { if !importer.imported[name] { t.Errorf("package %s not imported", name) } } // check that qualified identifiers are resolved for _, f := range files { ast.Inspect(f, func(n ast.Node) bool { if s, ok := n.(*ast.SelectorExpr); ok { if x, ok := s.X.(*ast.Ident); ok { obj := uses[x] if obj == nil { t.Errorf("%s: unresolved qualified identifier %s", fset.Position(x.Pos()), x.Name) return false } if _, ok := obj.(*PkgName); ok && uses[s.Sel] == nil { t.Errorf("%s: unresolved selector %s", fset.Position(s.Sel.Pos()), s.Sel.Name) return false } return false } return false } return true }) } for id, obj := range uses { if obj == nil { t.Errorf("%s: Uses[%s] == nil", fset.Position(id.Pos()), id.Name) } } // check that each identifier in the source is found in uses or defs or both var both []string for _, f := range files { ast.Inspect(f, func(n ast.Node) bool { if x, ok := n.(*ast.Ident); ok { var objects int if _, found := uses[x]; found { objects |= 1 delete(uses, x) } if _, found := defs[x]; found { objects |= 2 delete(defs, x) } if objects == 0 { t.Errorf("%s: unresolved identifier %s", fset.Position(x.Pos()), x.Name) } else if objects == 3 { both = append(both, x.Name) } return false } return true }) } // check the expected set of idents that are simultaneously uses and defs sort.Strings(both) if got, want := fmt.Sprint(both), "[Mutex Stringer error]"; got != want { t.Errorf("simultaneous uses/defs = %s, want %s", got, want) } // any left-over identifiers didn't exist in the source for x := range uses { t.Errorf("%s: identifier %s not present in source", fset.Position(x.Pos()), x.Name) } for x := range defs { t.Errorf("%s: identifier %s not present in source", fset.Position(x.Pos()), x.Name) } // TODO(gri) add tests to check ImplicitObj callbacks }