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refactor/importgraph: don't ignore imports in packages with errors.

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And in gomvpkg, don't stop just because some packages had errors.
This is inevitable in a large GOPATH tree.

Fixes issue golang/go#10907

Change-Id: I9a60b070228d06d44880202eeef54394e914f5d5
Reviewed-on: https://go-review.googlesource.com/10715
Reviewed-by: Sameer Ajmani <sameer@golang.org>
This commit is contained in:
Alan Donovan 2015-06-04 18:38:33 -04:00
parent f671283c22
commit a9866431ad
3 changed files with 23 additions and 15 deletions
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15
refactor/importgraph/graph.go
View File

@ -54,7 +54,8 @@ func (g Graph) Search(roots ...string) map[string]bool {
// Build scans the specified Go workspace and builds the forward and
// reverse import dependency graphs for all its packages.
// It also returns a mapping from import paths to errors for packages
// that could not be loaded.
// whose loading was not entirely successful.
// A package may appear in the graph and in the errors mapping.
func Build(ctxt *build.Context) (forward, reverse Graph, errors map[string]error) {
type importEdge struct {
from, to string
@ -75,14 +76,17 @@ func Build(ctxt *build.Context) (forward, reverse Graph, errors map[string]error
ch <- pathError{path, err}
return
}
bp, err := ctxt.Import(path, "", 0)
if _, ok := err.(*build.NoGoError); ok {
return // empty directory is not an error
}
if err != nil {
if _, ok := err.(*build.NoGoError); ok {
// empty directory is not an error
} else {
ch <- pathError{path, err}
return
}
// Even in error cases, Import usually returns a package.
}
if bp != nil {
for _, imp := range bp.Imports {
ch <- importEdge{path, imp}
}
@ -92,6 +96,7 @@ func Build(ctxt *build.Context) (forward, reverse Graph, errors map[string]error
for _, imp := range bp.XTestImports {
ch <- importEdge{path, imp}
}
}
}()
})
go func() {

3
refactor/rename/mvpkg.go
View File

@ -61,11 +61,12 @@ func Move(ctxt *build.Context, from, to, moveTmpl string) error {
// Build the import graph and figure out which packages to update.
fwd, rev, errors := importgraph.Build(ctxt)
if len(errors) > 0 {
// With a large GOPATH tree, errors are inevitable.
// Report them but proceed.
fmt.Fprintf(os.Stderr, "While scanning Go workspace:\n")
for path, err := range errors {
fmt.Fprintf(os.Stderr, "Package %q: %s.\n", path, err)
}
return fmt.Errorf("failed to construct import graph")
}
// Determine the affected packages---the set of packages whose import

2
refactor/rename/rename.go
View File

@ -254,6 +254,8 @@ func Main(ctxt *build.Context, offsetFlag, fromFlag, to string) error {
// Scan the workspace and build the import graph.
_, rev, errors := importgraph.Build(ctxt)
if len(errors) > 0 {
// With a large GOPATH tree, errors are inevitable.
// Report them but proceed.
fmt.Fprintf(os.Stderr, "While scanning Go workspace:\n")
for path, err := range errors {
fmt.Fprintf(os.Stderr, "Package %q: %s.\n", path, err)