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This commit is contained in:
konrad
2019-10-16 20:52:29 +00:00
committed by Gitea
parent e2f481a6e5
commit 2169464983
349 changed files with 22540 additions and 5267 deletions
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118
vendor/golang.org/x/tools/go/packages/packages.go generated vendored
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@ -48,8 +48,7 @@ const (
// "placeholder" Packages with only the ID set.
NeedImports
// NeedDeps adds the fields requested by the LoadMode in the packages in Imports. If NeedImports
// is not set NeedDeps has no effect.
// NeedDeps adds the fields requested by the LoadMode in the packages in Imports.
NeedDeps
// NeedExportsFile adds ExportsFile.
@ -75,7 +74,7 @@ const (
// Deprecated: LoadImports exists for historical compatibility
// and should not be used. Please directly specify the needed fields using the Need values.
LoadImports = LoadFiles | NeedImports | NeedDeps
LoadImports = LoadFiles | NeedImports
// Deprecated: LoadTypes exists for historical compatibility
// and should not be used. Please directly specify the needed fields using the Need values.
@ -87,7 +86,7 @@ const (
// Deprecated: LoadAllSyntax exists for historical compatibility
// and should not be used. Please directly specify the needed fields using the Need values.
LoadAllSyntax = LoadSyntax
LoadAllSyntax = LoadSyntax | NeedDeps
)
// A Config specifies details about how packages should be loaded.
@ -103,6 +102,12 @@ type Config struct {
// If Context is nil, the load cannot be cancelled.
Context context.Context
// Logf is the logger for the config.
// If the user provides a logger, debug logging is enabled.
// If the GOPACKAGESDEBUG environment variable is set to true,
// but the logger is nil, default to log.Printf.
Logf func(format string, args ...interface{})
// Dir is the directory in which to run the build system's query tool
// that provides information about the packages.
// If Dir is empty, the tool is run in the current directory.
@ -410,11 +415,13 @@ type loader struct {
parseCacheMu sync.Mutex
exportMu sync.Mutex // enforces mutual exclusion of exportdata operations
// TODO(matloob): Add an implied mode here and use that instead of mode.
// Implied mode would contain all the fields we need the data for so we can
// get the actually requested fields. We'll zero them out before returning
// packages to the user. This will make it easier for us to get the conditions
// where we need certain modes right.
// Config.Mode contains the implied mode (see impliedLoadMode).
// Implied mode contains all the fields we need the data for.
// In requestedMode there are the actually requested fields.
// We'll zero them out before returning packages to the user.
// This makes it easier for us to get the conditions where
// we need certain modes right.
requestedMode LoadMode
}
type parseValue struct {
@ -429,6 +436,17 @@ func newLoader(cfg *Config) *loader {
}
if cfg != nil {
ld.Config = *cfg
// If the user has provided a logger, use it.
ld.Config.Logf = cfg.Logf
}
if ld.Config.Logf == nil {
// If the GOPACKAGESDEBUG environment variable is set to true,
// but the user has not provided a logger, default to log.Printf.
if debug {
ld.Config.Logf = log.Printf
} else {
ld.Config.Logf = func(format string, args ...interface{}) {}
}
}
if ld.Config.Mode == 0 {
ld.Config.Mode = NeedName | NeedFiles | NeedCompiledGoFiles // Preserve zero behavior of Mode for backwards compatibility.
@ -445,6 +463,10 @@ func newLoader(cfg *Config) *loader {
}
}
// Save the actually requested fields. We'll zero them out before returning packages to the user.
ld.requestedMode = ld.Mode
ld.Mode = impliedLoadMode(ld.Mode)
if ld.Mode&NeedTypes != 0 {
if ld.Fset == nil {
ld.Fset = token.NewFileSet()
@ -459,6 +481,7 @@ func newLoader(cfg *Config) *loader {
}
}
}
return ld
}
@ -479,8 +502,8 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
}
lpkg := &loaderPackage{
Package: pkg,
needtypes: (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && rootIndex < 0) || rootIndex >= 0,
needsrc: (ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && rootIndex < 0) || rootIndex >= 0 ||
needtypes: (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0,
needsrc: (ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0 ||
len(ld.Overlay) > 0 || // Overlays can invalidate export data. TODO(matloob): make this check fine-grained based on dependencies on overlaid files
pkg.ExportFile == "" && pkg.PkgPath != "unsafe",
}
@ -528,8 +551,7 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
stack = append(stack, lpkg) // push
stubs := lpkg.Imports // the structure form has only stubs with the ID in the Imports
// If NeedImports isn't set, the imports fields will all be zeroed out.
// If NeedDeps isn't also set we want to keep the stubs.
if ld.Mode&NeedImports != 0 && ld.Mode&NeedDeps != 0 {
if ld.Mode&NeedImports != 0 {
lpkg.Imports = make(map[string]*Package, len(stubs))
for importPath, ipkg := range stubs {
var importErr error
@ -566,7 +588,7 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
return lpkg.needsrc
}
if ld.Mode&(NeedImports|NeedDeps) == 0 {
if ld.Mode&NeedImports == 0 {
// We do this to drop the stub import packages that we are not even going to try to resolve.
for _, lpkg := range initial {
lpkg.Imports = nil
@ -577,7 +599,7 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
visit(lpkg)
}
}
if ld.Mode&NeedDeps != 0 { // TODO(matloob): This is only the case if NeedTypes is also set, right?
if ld.Mode&NeedImports != 0 && ld.Mode&NeedTypes != 0 {
for _, lpkg := range srcPkgs {
// Complete type information is required for the
// immediate dependencies of each source package.
@ -602,54 +624,44 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
}
result := make([]*Package, len(initial))
importPlaceholders := make(map[string]*Package)
for i, lpkg := range initial {
result[i] = lpkg.Package
}
for i := range ld.pkgs {
// Clear all unrequested fields, for extra de-Hyrum-ization.
if ld.Mode&NeedName == 0 {
if ld.requestedMode&NeedName == 0 {
ld.pkgs[i].Name = ""
ld.pkgs[i].PkgPath = ""
}
if ld.Mode&NeedFiles == 0 {
if ld.requestedMode&NeedFiles == 0 {
ld.pkgs[i].GoFiles = nil
ld.pkgs[i].OtherFiles = nil
}
if ld.Mode&NeedCompiledGoFiles == 0 {
if ld.requestedMode&NeedCompiledGoFiles == 0 {
ld.pkgs[i].CompiledGoFiles = nil
}
if ld.Mode&NeedImports == 0 {
if ld.requestedMode&NeedImports == 0 {
ld.pkgs[i].Imports = nil
}
if ld.Mode&NeedExportsFile == 0 {
if ld.requestedMode&NeedExportsFile == 0 {
ld.pkgs[i].ExportFile = ""
}
if ld.Mode&NeedTypes == 0 {
if ld.requestedMode&NeedTypes == 0 {
ld.pkgs[i].Types = nil
ld.pkgs[i].Fset = nil
ld.pkgs[i].IllTyped = false
}
if ld.Mode&NeedSyntax == 0 {
if ld.requestedMode&NeedSyntax == 0 {
ld.pkgs[i].Syntax = nil
}
if ld.Mode&NeedTypesInfo == 0 {
if ld.requestedMode&NeedTypesInfo == 0 {
ld.pkgs[i].TypesInfo = nil
}
if ld.Mode&NeedTypesSizes == 0 {
if ld.requestedMode&NeedTypesSizes == 0 {
ld.pkgs[i].TypesSizes = nil
}
if ld.Mode&NeedDeps == 0 {
for j, pkg := range ld.pkgs[i].Imports {
ph, ok := importPlaceholders[pkg.ID]
if !ok {
ph = &Package{ID: pkg.ID}
importPlaceholders[pkg.ID] = ph
}
ld.pkgs[i].Imports[j] = ph
}
}
}
return result, nil
}
@ -670,7 +682,6 @@ func (ld *loader) loadRecursive(lpkg *loaderPackage) {
}(imp)
}
wg.Wait()
ld.loadPackage(lpkg)
})
}
@ -759,6 +770,14 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
lpkg.Errors = append(lpkg.Errors, errs...)
}
if len(lpkg.CompiledGoFiles) == 0 && lpkg.ExportFile != "" {
// The config requested loading sources and types, but sources are missing.
// Add an error to the package and fall back to loading from export data.
appendError(Error{"-", fmt.Sprintf("sources missing for package %s", lpkg.ID), ParseError})
ld.loadFromExportData(lpkg)
return // can't get syntax trees for this package
}
files, errs := ld.parseFiles(lpkg.CompiledGoFiles)
for _, err := range errs {
appendError(err)
@ -797,7 +816,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
if ipkg.Types != nil && ipkg.Types.Complete() {
return ipkg.Types, nil
}
log.Fatalf("internal error: nil Pkg importing %q from %q", path, lpkg)
log.Fatalf("internal error: package %q without types was imported from %q", path, lpkg)
panic("unreachable")
})
@ -808,7 +827,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
// Type-check bodies of functions only in non-initial packages.
// Example: for import graph A->B->C and initial packages {A,C},
// we can ignore function bodies in B.
IgnoreFuncBodies: (ld.Mode&(NeedDeps|NeedTypesInfo) == 0) && !lpkg.initial,
IgnoreFuncBodies: ld.Mode&NeedDeps == 0 && !lpkg.initial,
Error: appendError,
Sizes: ld.sizes,
@ -1070,6 +1089,25 @@ func (ld *loader) loadFromExportData(lpkg *loaderPackage) (*types.Package, error
return tpkg, nil
}
func usesExportData(cfg *Config) bool {
return cfg.Mode&NeedExportsFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedTypesInfo == 0
// impliedLoadMode returns loadMode with its dependencies.
func impliedLoadMode(loadMode LoadMode) LoadMode {
if loadMode&NeedTypesInfo != 0 && loadMode&NeedImports == 0 {
// If NeedTypesInfo, go/packages needs to do typechecking itself so it can
// associate type info with the AST. To do so, we need the export data
// for dependencies, which means we need to ask for the direct dependencies.
// NeedImports is used to ask for the direct dependencies.
loadMode |= NeedImports
}
if loadMode&NeedDeps != 0 && loadMode&NeedImports == 0 {
// With NeedDeps we need to load at least direct dependencies.
// NeedImports is used to ask for the direct dependencies.
loadMode |= NeedImports
}
return loadMode
}
func usesExportData(cfg *Config) bool {
return cfg.Mode&NeedExportsFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedDeps == 0
}