func LocalImporter(path string) (pkg *ast.Package) {
path = filepath.Clean(path)
//fmt.Printf("Importing %s\n", path)
var ok bool
var pkgtop *ast.Package
if pkgtop, ok = PackageTops[path]; !ok {
pkg = types.DefaultImporter(path)
return
}
if pkg, ok = Packages[path]; ok {
return
}
var sourcefiles []string
for srcfile := range pkgtop.Files {
sourcefiles = append(sourcefiles, srcfile)
}
//fmt.Printf("Parsing %v\n", sourcefiles)
dirpkgs, err := parser.ParseFiles(AllSources, sourcefiles, parser.ParseComments)
if err != nil {
fmt.Println(err)
return
}
pkg = dirpkgs[pkgtop.Name]
Packages[path] = pkg
//fmt.Printf("nil: %v name: %s\n", pkg == nil, pkgtop.Name)
return
}
func (ctxt *Context) importerFunc() types.Importer {
return func(path string) *ast.Package {
ctxt.pkgMutex.Lock()
defer ctxt.pkgMutex.Unlock()
if pkg := ctxt.pkgCache[path]; pkg != nil {
return pkg
}
cwd, _ := os.Getwd() // TODO put this into Context?
bpkg, err := build.Import(path, cwd, 0)
if err != nil {
ctxt.logf(token.NoPos, "cannot find %q: %v", path, err)
return nil
}
// Relative paths can have several names
if pkg := ctxt.pkgCache[bpkg.ImportPath]; pkg != nil {
ctxt.pkgCache[path] = pkg
return pkg
}
var files []string
files = append(files, bpkg.GoFiles...)
files = append(files, bpkg.CgoFiles...)
files = append(files, bpkg.TestGoFiles...)
for i, f := range files {
files[i] = filepath.Join(bpkg.Dir, f)
}
pkgs, err := parser.ParseFiles(ctxt.FileSet, files, parser.ParseComments)
if len(pkgs) == 0 {
ctxt.logf(token.NoPos, "cannot parse package %q: %v", path, err)
return nil
}
delete(pkgs, "documentation")
for _, pkg := range pkgs {
if ctxt.pkgCache[path] == nil {
ctxt.pkgCache[path] = pkg
if path != bpkg.ImportPath {
ctxt.pkgCache[bpkg.ImportPath] = pkg
}
} else {
ctxt.logf(token.NoPos, "unexpected extra package %q in %q", pkg.Name, path)
}
}
return ctxt.pkgCache[path]
}
}
//Look at the imports, and build up ImportedBy
func ScanForImports(path string) (err error) {
sourcefiles, _ := filepath.Glob(filepath.Join(path, "*.go"))
dirpkgs, err := parser.ParseFiles(AllSourceTops, sourcefiles, parser.ImportsOnly)
if err != nil {
fmt.Println(err)
}
//take the first non-main. otherwise, main is ok.
var prime *ast.Package
for name, pkg := range dirpkgs {
prime = pkg
if name != "main" {
break
}
}
if prime == nil {
return
}
PackageTops[path] = prime
is := make(ImportScanner)
ast.Walk(is, prime)
if v, ok := is["."]; !v && ok {
return MakeErr("gorf can not deal with unnamed import in '%s'", path)
}
for path, _ := range is {
if strings.HasPrefix(path, ".") {
return MakeErr("gorf can not deal with relative import in '%s'", path)
}
}
for imp := range is {
ImportedBy[imp] = append(ImportedBy[imp], path)
}
return
}