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internal/imports: filter candidates on directory name

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When finding completion candidates, we can use the same tricks
goimports uses to ignore directories that look irrelevant.

Change-Id: I114a3d4e487aed7f59fc48b2f86d42129baf5183
Reviewed-on: https://go-review.googlesource.com/c/tools/+/212859
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This commit is contained in:
Heschi Kreinick 2019-12-30 13:29:55 -05:00
parent 872f4f411e
commit 2f3125dfbf
1 changed files with 15 additions and 12 deletions
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27
internal/imports/fix.go
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@ -589,9 +589,10 @@ func getFixes(fset *token.FileSet, f *ast.File, filename string, env *ProcessEnv
// match pre-existing gopls code.
const MaxRelevance = 7
// getCandidatePkgs returns the list of pkgs that are accessible from filename,
// filtered to those that match pkgnameFilter.
func getCandidatePkgs(ctx context.Context, wrappedCallback *scanCallback, filename string, env *ProcessEnv) error {
// getCandidatePkgs works with the passed callback to find all acceptable packages.
// It deduplicates by import path, and uses a cached stdlib rather than reading
// from disk.
func getCandidatePkgs(ctx context.Context, wrappedCallback *scanCallback, env *ProcessEnv) error {
// TODO(heschi): filter out current package. (Don't forget x_test can import x.)
// Start off with the standard library.
@ -616,9 +617,7 @@ func getCandidatePkgs(ctx context.Context, wrappedCallback *scanCallback, filena
// and generally redundant with the in-memory version.
return root.Type != gopathwalk.RootGOROOT && wrappedCallback.rootFound(root)
},
dirFound: func(pkg *pkg) bool {
return canUse(filename, pkg.dir) && wrappedCallback.dirFound(pkg)
},
dirFound: wrappedCallback.dirFound,
packageNameLoaded: func(pkg *pkg) bool {
mu.Lock()
defer mu.Unlock()
@ -649,8 +648,13 @@ func getAllCandidates(ctx context.Context, wrapped func(ImportFix), prefix strin
return true
},
dirFound: func(pkg *pkg) bool {
// TODO(heschi): apply dir match heuristics like pkgIsCandidate
return true
if !canUse(filename, pkg.dir) {
return false
}
// Try the assumed package name first, then a simpler path match
// in case of packages named vN, which are not uncommon.
return strings.HasPrefix(ImportPathToAssumedName(pkg.importPathShort), prefix) ||
strings.HasPrefix(path.Base(pkg.importPathShort), prefix)
},
packageNameLoaded: func(pkg *pkg) bool {
if strings.HasPrefix(pkg.packageName, prefix) {
@ -667,7 +671,7 @@ func getAllCandidates(ctx context.Context, wrapped func(ImportFix), prefix strin
return false
},
}
return getCandidatePkgs(ctx, callback, filename, env)
return getCandidatePkgs(ctx, callback, env)
}
// A PackageExport is a package and its exports.
@ -682,8 +686,7 @@ func getPackageExports(ctx context.Context, wrapped func(PackageExport), complet
return true
},
dirFound: func(pkg *pkg) bool {
// TODO(heschi): apply dir match heuristics like pkgIsCandidate
return true
return pkgIsCandidate(filename, references{completePackage: nil}, pkg)
},
packageNameLoaded: func(pkg *pkg) bool {
return pkg.packageName == completePackage
@ -704,7 +707,7 @@ func getPackageExports(ctx context.Context, wrapped func(PackageExport), complet
})
},
}
return getCandidatePkgs(ctx, callback, filename, env)
return getCandidatePkgs(ctx, callback, env)
}
// ProcessEnv contains environment variables and settings that affect the use of