func (tc *typechecker) checkPackage(pkg *ast.Package) {
// setup package scope
tc.topScope = Universe
tc.openScope()
defer tc.closeScope()
// TODO(gri) there's no file scope at the moment since we ignore imports
// phase 1: declare all global objects; also collect all function and method declarations
var funcs []*ast.FuncDecl
for _, file := range pkg.Files {
for _, decl := range file.Decls {
tc.declGlobal(decl)
if f, isFunc := decl.(*ast.FuncDecl); isFunc {
funcs = append(funcs, f)
}
}
}
// phase 2: bind methods to their receiver base types
for _, m := range funcs {
if m.Recv != nil {
tc.bindMethod(m)
}
}
// phase 3: resolve all global objects
tc.cyclemap = make(map[*ast.Object]bool)
for _, obj := range tc.globals {
tc.resolve(obj)
}
assert(len(tc.cyclemap) == 0)
// 4: sequentially typecheck function and method bodies
for _, f := range funcs {
ftype, _ := f.Name.Obj.Type.(*Type)
tc.checkBlock(f.Body.List, ftype)
}
pkg.Scope = tc.topScope
}
func ParseDir(dir string) ([]string, error) {
var imports []string
dirFile, err := os.Open(dir)
if err != nil {
return nil, err
}
defer dirFile.Close()
info, err := dirFile.Stat()
if err != nil {
return nil, err
}
var pkgs map[string]*ast.Package
if !info.IsDir() {
var p *ast.File
p, err = parser.ParseFile(token.NewFileSet(), dir, nil, 0)
var pp ast.Package
pkgs = make(map[string]*ast.Package)
pp.Files = make(map[string]*ast.File)
pp.Files[dir] = p
pkgs[dir] = &pp
} else {
pkgs, err = parser.ParseDir(token.NewFileSet(), dir, FilterGo, 0)
if err != nil {
return nil, err
}
}
for _, pkg := range pkgs {
// var f *ast.File
for _, f := range pkg.Files {
for _, i := range f.Imports {
d := strings.Trim(i.Path.Value, "\"")
// from go/src/cmd/go/pkg.go
//
// p.Standard = p.Goroot && p.ImportPath != "" && !strings.Contains(p.ImportPath, ".")
//
// all Standard packages do not have "dot"
if strings.Contains(d, ".") && !strings.HasPrefix(d, ".") {
imports = append(imports, d)
}
}
}
}
{
dirs, err := dirFile.Readdir(-1)
if err != nil {
return nil, err
}
for _, info := range dirs {
if info.IsDir() {
t, e := ParseDir(path.Join(dir, info.Name()))
if e != nil {
return nil, e
}
imports = append(imports, t...)
}
}
}
return imports, nil
}