load

package
v0.4.210-rc.2 Latest Latest
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 Go to latest Published: Jun 30, 2023 License: BSD-3-Clause Imports: 47 Imported by: 0

Documentation

Overview

Package load loads packages.

Index

Constants

View Source 
const (
	// ResolveImport means that loadImport should do import path expansion.
	// That is, ResolveImport means that the import path came from
	// a source file and has not been expanded yet to account for
	// vendoring or possible module adjustment.
	// Every import path should be loaded initially with ResolveImport,
	// and then the expanded version (for example with the /vendor/ in it)
	// gets recorded as the canonical import path. At that point, future loads
	// of that package must not pass ResolveImport, because
	// disallowVendor will reject direct use of paths containing /vendor/.
	ResolveImport = 1 << iota

	// ResolveModule is for download (part of "go get") and indicates
	// that the module adjustment should be done, but not vendor adjustment.
	ResolveModule

	// GetTestDeps is for download (part of "go get") and indicates
	// that test dependencies should be fetched too.
	GetTestDeps
)

Mode flags for loadImport and download (in get.go).

Variables

View Source 
var ErrNotGoDebug = errors.New("not //go:debug line")
View Source 
var TestMainDeps = []string{

	"os",
	"reflect",
	"testing",
	"testing/internal/testdeps",
}

Functions

func CheckPackageErrors 

func CheckPackageErrors(pkgs []*Package)

CheckPackageErrors prints errors encountered loading pkgs and their dependencies, then exits with a non-zero status if any errors were found.

func ClearPackageCache 

func ClearPackageCache()

ClearPackageCache clears the in-memory package cache and the preload caches. It is only for use by GOPATH-based "go get". TODO(jayconrod): When GOPATH-based "go get" is removed, delete this function.

func ClearPackageCachePartial 

func ClearPackageCachePartial(args []string)

ClearPackageCachePartial clears packages with the given import paths from the in-memory package cache and the preload caches. It is only for use by GOPATH-based "go get". TODO(jayconrod): When GOPATH-based "go get" is removed, delete this function.

func DeclareCoverVars added in v0.3.205 

func DeclareCoverVars(p *Package, files ...string) map[string]*CoverVar

DeclareCoverVars attaches the required cover variables names to the files, to be used when annotating the files. This function only called when using legacy coverage test/build (e.g. GOEXPERIMENT=coverageredesign is off).

func EnsureImport added in v0.3.205 

func EnsureImport(p *Package, pkg string)

EnsureImport ensures that package p imports the named package.

func FindVendor 

func FindVendor(path string) (index int, ok bool)

FindVendor looks for the last non-terminating "vendor" path element in the given import path. If there isn't one, FindVendor returns ok=false. Otherwise, FindVendor returns ok=true and the index of the "vendor".

Note that terminating "vendor" elements don't count: "x/vendor" is its own package, not the vendored copy of an import "" (the empty import path). This will allow people to have packages or commands named vendor. This may help reduce breakage, or it may just be confusing. We'll see.

func LinkerDeps 

func LinkerDeps(p *Package) []string

LinkerDeps returns the list of linker-induced dependencies for main package p.

func LoadImport 

func LoadImport(ctx context.Context, opts PackageOpts, path, srcDir string, parent *Package, stk *ImportStack, importPos []token.Position, mode int) (*Package, *PackageError)

LoadImport scans the directory named by path, which must be an import path, but possibly a local import path (an absolute file system path or one beginning with ./ or ../). A local relative path is interpreted relative to srcDir. It returns a *Package describing the package found in that directory. LoadImport does not set tool flags and should only be used by this package, as part of a bigger load operation, and by GOPATH-based "go get". TODO(rsc): When GOPATH-based "go get" is removed, unexport this function. The returned PackageError, if any, describes why parent is not allowed to import the named package, with the error referring to importPos. The PackageError can only be non-nil when parent is not nil.

func LoadImportWithFlags 

func LoadImportWithFlags(path, srcDir string, parent *Package, stk *ImportStack, importPos []token.Position, mode int) (*Package, *PackageError)

LoadImportWithFlags loads the package with the given import path and sets tool flags on that package. This function is useful loading implicit dependencies (like sync/atomic for coverage). TODO(jayconrod): delete this function and set flags automatically in LoadImport instead.

func MatchPackage 

func MatchPackage(pattern, cwd string) func(*Package) bool

MatchPackage(pattern, cwd)(p) reports whether package p matches pattern in the working directory cwd.

func ParseGoDebug added in v0.7.2202 

func ParseGoDebug(text string) (key, value string, err error)

func PrepareForCoverageBuild added in v0.3.205 

func PrepareForCoverageBuild(pkgs []*Package)

PrepareForCoverageBuild is a helper invoked for "go install -cover", "go run -cover", and "go build -cover" (but not used by "go test -cover"). It walks through the packages being built (and dependencies) and marks them for coverage instrumentation when appropriate, and possibly adding additional deps where needed.

func ResolveEmbed 

func ResolveEmbed(dir string, patterns []string) ([]string, error)

ResolveEmbed resolves //go:embed patterns and returns only the file list. For use by go mod vendor to find embedded files it should copy into the vendor directory. TODO(#42504): Once go mod vendor uses load.PackagesAndErrors, just call (*Package).ResolveEmbed

func ResolveImportPath 

func ResolveImportPath(parent *Package, path string) (found string)

ResolveImportPath returns the true meaning of path when it appears in parent. There are two different resolutions applied. First, there is Go 1.5 vendoring (golang.org/s/go15vendor). If vendor expansion doesn't trigger, then the path is also subject to Go 1.11 module legacy conversion (golang.org/issue/25069).

func SafeArg 

func SafeArg(name string) bool

SafeArg reports whether arg is a "safe" command-line argument, meaning that when it appears in a command-line, it probably doesn't have some special meaning other than its own name. Obviously args beginning with - are not safe (they look like flags). Less obviously, args beginning with @ are not safe (they look like GNU binutils flagfile specifiers, sometimes called "response files"). To be conservative, we reject almost any arg beginning with non-alphanumeric ASCII. We accept leading . _ and / as likely in file system paths. There is a copy of this function in cmd/compile/internal/gc/noder.go.

Types

type CoverVar 

type CoverVar struct {
	File string // local file name
	Var  string // name of count struct
}

CoverVar holds the name of the generated coverage variables targeting the named file.

type EmbedError 

type EmbedError struct {
	Pattern string
	Err     error
}

An EmbedError indicates a problem with a go:embed directive.

func (*EmbedError) Error 

func (e *EmbedError) Error() string

func (*EmbedError) Unwrap 

func (e *EmbedError) Unwrap() error

type ImportPathError 

type ImportPathError interface {
	error
	ImportPath() string
}

ImportPathError is a type of error that prevents a package from being loaded for a given import path. When such a package is loaded, a *Package is returned with Err wrapping an ImportPathError: the error is attached to the imported package, not the importing package.

The string returned by ImportPath must appear in the string returned by Error. Errors that wrap ImportPathError (such as PackageError) may omit the import path.

func ImportErrorf 

func ImportErrorf(path, format string, args ...any) ImportPathError

type ImportStack 

type ImportStack []string

An ImportStack is a stack of import paths, possibly with the suffix " (test)" appended. The import path of a test package is the import path of the corresponding non-test package with the suffix "_test" added.

func (*ImportStack) Copy 

func (s *ImportStack) Copy() []string

func (*ImportStack) Pop 

func (s *ImportStack) Pop()

func (*ImportStack) Push 

func (s *ImportStack) Push(p string)

func (*ImportStack) Top 

func (s *ImportStack) Top() string

type NoGoError 

type NoGoError struct {
	Package *Package
}

A NoGoError indicates that no Go files for the package were applicable to the build for that package.

That may be because there were no files whatsoever, or because all files were excluded, or because all non-excluded files were test sources.

func (*NoGoError) Error 

func (e *NoGoError) Error() string

type Package 

type Package struct {
	PackagePublic                 // visible in 'go list'
	Internal      PackageInternal // for use inside go command only
}

A Package describes a single package found in a directory.

func GoFilesPackage 

func GoFilesPackage(ctx context.Context, opts PackageOpts, gofiles []string) *Package

GoFilesPackage creates a package for building a collection of Go files (typically named on the command line). The target is named p.a for package p or named after the first Go file for package main.

func LoadPackage added in v0.7.2202 

func LoadPackage(ctx context.Context, opts PackageOpts, path, srcDir string, stk *ImportStack, importPos []token.Position, mode int) *Package

LoadPackage does Load import, but without a parent package load contezt

func LoadPackageWithFlags added in v0.7.2202 

func LoadPackageWithFlags(path, srcDir string, stk *ImportStack, importPos []token.Position, mode int) *Package

LoadPackageWithFlags is the same as LoadImportWithFlags but without a parent. It's then guaranteed to not return an error

func PackageList 

func PackageList(roots []*Package) []*Package

PackageList returns the list of packages in the dag rooted at roots as visited in a depth-first post-order traversal.

func PackagesAndErrors 

func PackagesAndErrors(ctx context.Context, opts PackageOpts, patterns []string) []*Package

PackagesAndErrors returns the packages named by the command line arguments 'patterns'. If a named package cannot be loaded, PackagesAndErrors returns a *Package with the Error field describing the failure. If errors are found loading imported packages, the DepsErrors field is set. The Incomplete field may be set as well.

To obtain a flat list of packages, use PackageList. To report errors loading packages, use ReportPackageErrors.

func PackagesAndErrorsOutsideModule 

func PackagesAndErrorsOutsideModule(ctx context.Context, opts PackageOpts, args []string) ([]*Package, error)

PackagesAndErrorsOutsideModule is like PackagesAndErrors but runs in module-aware mode and ignores the go.mod file in the current directory or any parent directory, if there is one. This is used in the implementation of 'go install pkg@version' and other commands that support similar forms.

modload.ForceUseModules must be true, and modload.RootMode must be NoRoot before calling this function.

PackagesAndErrorsOutsideModule imposes several constraints to avoid ambiguity. All arguments must have the same version suffix (not just a suffix that resolves to the same version). They must refer to packages in the same module, which must not be std or cmd. That module is not considered the main module, but its go.mod file (if it has one) must not contain directives that would cause it to be interpreted differently if it were the main module (replace, exclude).

func ReloadPackageNoFlags 

func ReloadPackageNoFlags(arg string, stk *ImportStack) *Package

ReloadPackageNoFlags is like LoadImport but makes sure not to use the package cache. It is only for use by GOPATH-based "go get". TODO(rsc): When GOPATH-based "go get" is removed, delete this function.

func SelectCoverPackages added in v0.3.205 

func SelectCoverPackages(roots []*Package, match []func(*Package) bool, op string) []*Package

func TestPackageList 

func TestPackageList(ctx context.Context, opts PackageOpts, roots []*Package) []*Package

TestPackageList returns the list of packages in the dag rooted at roots as visited in a depth-first post-order traversal, including the test imports of the roots. This ignores errors in test packages.

func TestPackagesAndErrors 

func TestPackagesAndErrors(ctx context.Context, done func(), opts PackageOpts, p *Package, cover *TestCover) (pmain, ptest, pxtest *Package)

TestPackagesAndErrors returns three packages:

  • pmain, the package main corresponding to the test binary (running tests in ptest and pxtest).
  • ptest, the package p compiled with added "package p" test files.
  • pxtest, the result of compiling any "package p_test" (external) test files.

If the package has no "package p_test" test files, pxtest will be nil. If the non-test compilation of package p can be reused (for example, if there are no "package p" test files and package p need not be instrumented for coverage or any other reason), then the returned ptest == p.

If done is non-nil, TestPackagesAndErrors will finish filling out the returned package structs in a goroutine and call done once finished. The members of the returned packages should not be accessed until done is called.

The caller is expected to have checked that len(p.TestGoFiles)+len(p.XTestGoFiles) > 0, or else there's no point in any of this.

func TestPackagesFor 

func TestPackagesFor(ctx context.Context, opts PackageOpts, p *Package, cover *TestCover) (pmain, ptest, pxtest *Package, err error)

TestPackagesFor is like TestPackagesAndErrors but it returns an error if the test packages or their dependencies have errors. Only test packages without errors are returned.

func (*Package) AllFiles 

func (p *Package) AllFiles() []string

AllFiles returns the names of all the files considered for the package. This is used for sanity and security checks, so we include all files, even IgnoredGoFiles, because some subcommands consider them. The go/build package filtered others out (like foo_wrongGOARCH.s) and that's OK.

func (*Package) DefaultExecName 

func (p *Package) DefaultExecName() string

DefaultExecName returns the default executable name for a package

func (*Package) Desc 

func (p *Package) Desc() string

Desc returns the package "description", for use in b.showOutput.

func (*Package) InternalAllGoFiles 

func (p *Package) InternalAllGoFiles() []string

InternalAllGoFiles returns the list of all Go files possibly relevant for the package, using absolute paths. "Possibly relevant" means that files are not excluded due to build tags, but files with names beginning with . or _ are still excluded.

func (*Package) InternalGoFiles 

func (p *Package) InternalGoFiles() []string

InternalGoFiles returns the list of Go files being built for the package, using absolute paths.

func (*Package) InternalXGoFiles 

func (p *Package) InternalXGoFiles() []string

InternalXGoFiles returns the list of Go files being built for the XTest package, using absolute paths.

func (*Package) IsTestOnly 

func (p *Package) IsTestOnly() bool

IsTestOnly reports whether p is a test-only package.

A “test-only” package is one that:

  • is a test-only variant of an ordinary package, or
  • is a synthesized "main" package for a test binary, or
  • contains only _test.go files.

func (*Package) Resolve 

func (p *Package) Resolve(imports []string) []string

Resolve returns the resolved version of imports, which should be p.TestImports or p.XTestImports, NOT p.Imports. The imports in p.TestImports and p.XTestImports are not recursively loaded during the initial load of p, so they list the imports found in the source file, but most processing should be over the vendor-resolved import paths. We do this resolution lazily both to avoid file system work and because the eventual real load of the test imports (during 'go test') can produce better error messages if it starts with the original paths. The initial load of p loads all the non-test imports and rewrites the vendored paths, so nothing should ever call p.vendored(p.Imports).

func (*Package) UsesCgo 

func (p *Package) UsesCgo() bool

UsesCgo reports whether the package needs to run cgo

func (*Package) UsesSwig 

func (p *Package) UsesSwig() bool

UsesSwig reports whether the package needs to run SWIG.

type PackageError 

type PackageError struct {
	ImportStack   []string // shortest path from package named on command line to this one
	Pos           string   // position of error
	Err           error    // the error itself
	IsImportCycle bool     // the error is an import cycle
	Hard          bool     // whether the error is soft or hard; soft errors are ignored in some places
	// contains filtered or unexported fields
}

A PackageError describes an error loading information about a package.

func (*PackageError) Error 

func (p *PackageError) Error() string

func (*PackageError) MarshalJSON 

func (p *PackageError) MarshalJSON() ([]byte, error)

PackageError implements MarshalJSON so that Err is marshaled as a string and non-essential fields are omitted.

func (*PackageError) Unwrap 

func (p *PackageError) Unwrap() error

type PackageInternal 

type PackageInternal struct {
	// Unexported fields are not part of the public API.
	Build             *build.Package
	Imports           []*Package           // this package's direct imports
	CompiledImports   []string             // additional Imports necessary when using CompiledGoFiles (all from standard library); 1:1 with the end of PackagePublic.Imports
	RawImports        []string             // this package's original imports as they appear in the text of the program; 1:1 with the end of PackagePublic.Imports
	ForceLibrary      bool                 // this package is a library (even if named "main")
	CmdlineFiles      bool                 // package built from files listed on command line
	CmdlinePkg        bool                 // package listed on command line
	CmdlinePkgLiteral bool                 // package listed as literal on command line (not via wildcard)
	Local             bool                 // imported via local path (./ or ../)
	LocalPrefix       string               // interpret ./ and ../ imports relative to this prefix
	ExeName           string               // desired name for temporary executable
	FuzzInstrument    bool                 // package should be instrumented for fuzzing
	CoverMode         string               // preprocess Go source files with the coverage tool in this mode
	CoverVars         map[string]*CoverVar // variables created by coverage analysis
	CoverageCfg       string               // coverage info config file path (passed to compiler)
	OmitDebug         bool                 // tell linker not to write debug information
	GobinSubdir       bool                 // install target would be subdir of GOBIN
	BuildInfo         *debug.BuildInfo     // add this info to package main
	TestmainGo        *[]byte              // content for _testmain.go
	Embed             map[string][]string  // //go:embed comment mapping
	OrigImportPath    string               // original import path before adding '_test' suffix
	PGOProfile        string               // path to PGO profile
	ForMain           string               // the main package if this package is built specifically for it

	Asmflags   []string // -asmflags for this package
	Gcflags    []string // -gcflags for this package
	Ldflags    []string // -ldflags for this package
	Gccgoflags []string // -gccgoflags for this package
}

type PackageOpts 

type PackageOpts struct {
	// IgnoreImports controls whether we ignore explicit and implicit imports
	// when loading packages.  Implicit imports are added when supporting Cgo
	// or SWIG and when linking main packages.
	IgnoreImports bool

	// ModResolveTests indicates whether calls to the module loader should also
	// resolve test dependencies of the requested packages.
	//
	// If ModResolveTests is true, then the module loader needs to resolve test
	// dependencies at the same time as packages; otherwise, the test dependencies
	// of those packages could be missing, and resolving those missing dependencies
	// could change the selected versions of modules that provide other packages.
	ModResolveTests bool

	// MainOnly is true if the caller only wants to load main packages.
	// For a literal argument matching a non-main package, a stub may be returned
	// with an error. For a non-literal argument (with "..."), non-main packages
	// are not be matched, and their dependencies may not be loaded. A warning
	// may be printed for non-literal arguments that match no main packages.
	MainOnly bool

	// AutoVCS controls whether we also load version-control metadata for main packages
	// when -buildvcs=auto (the default).
	AutoVCS bool

	// SuppressBuildInfo is true if the caller does not need p.Stale, p.StaleReason, or p.Internal.BuildInfo
	// to be populated on the package.
	SuppressBuildInfo bool

	// SuppressEmbedFiles is true if the caller does not need any embed files to be populated on the
	// package.
	SuppressEmbedFiles bool
}

PackageOpts control the behavior of PackagesAndErrors and other package loading functions.

type PackagePublic 

type PackagePublic struct {
	// Note: These fields are part of the go command's public API.
	// See list.go. It is okay to add fields, but not to change or
	// remove existing ones. Keep in sync with ../list/list.go
	Dir           string                `json:",omitempty"` // directory containing package sources
	ImportPath    string                `json:",omitempty"` // import path of package in dir
	ImportComment string                `json:",omitempty"` // path in import comment on package statement
	Name          string                `json:",omitempty"` // package name
	Doc           string                `json:",omitempty"` // package documentation string
	Target        string                `json:",omitempty"` // installed target for this package (may be executable)
	Shlib         string                `json:",omitempty"` // the shared library that contains this package (only set when -linkshared)
	Root          string                `json:",omitempty"` // Go root, Go path dir, or module root dir containing this package
	ConflictDir   string                `json:",omitempty"` // Dir is hidden by this other directory
	ForTest       string                `json:",omitempty"` // package is only for use in named test
	Export        string                `json:",omitempty"` // file containing export data (set by go list -export)
	BuildID       string                `json:",omitempty"` // build ID of the compiled package (set by go list -export)
	Module        *modinfo.ModulePublic `json:",omitempty"` // info about package's module, if any
	Match         []string              `json:",omitempty"` // command-line patterns matching this package
	Goroot        bool                  `json:",omitempty"` // is this package found in the Go root?
	Standard      bool                  `json:",omitempty"` // is this package part of the standard Go library?
	DepOnly       bool                  `json:",omitempty"` // package is only as a dependency, not explicitly listed
	BinaryOnly    bool                  `json:",omitempty"` // package cannot be recompiled
	Incomplete    bool                  `json:",omitempty"` // was there an error loading this package or dependencies?

	DefaultGODEBUG string `json:",omitempty"` // default GODEBUG setting (only for Name=="main")

	// Stale and StaleReason remain here *only* for the list command.
	// They are only initialized in preparation for list execution.
	// The regular build determines staleness on the fly during action execution.
	Stale       bool   `json:",omitempty"` // would 'go install' do anything for this package?
	StaleReason string `json:",omitempty"` // why is Stale true?

	// Source files
	// If you add to this list you MUST add to p.AllFiles (below) too.
	// Otherwise file name security lists will not apply to any new additions.
	GoFiles           []string `json:",omitempty"` // .go source files (excluding CgoFiles, TestGoFiles, XTestGoFiles)
	CgoFiles          []string `json:",omitempty"` // .go source files that import "C"
	CompiledGoFiles   []string `json:",omitempty"` // .go output from running cgo on CgoFiles
	IgnoredGoFiles    []string `json:",omitempty"` // .go source files ignored due to build constraints
	InvalidGoFiles    []string `json:",omitempty"` // .go source files with detected problems (parse error, wrong package name, and so on)
	IgnoredOtherFiles []string `json:",omitempty"` // non-.go source files ignored due to build constraints
	CFiles            []string `json:",omitempty"` // .c source files
	CXXFiles          []string `json:",omitempty"` // .cc, .cpp and .cxx source files
	MFiles            []string `json:",omitempty"` // .m source files
	HFiles            []string `json:",omitempty"` // .h, .hh, .hpp and .hxx source files
	FFiles            []string `json:",omitempty"` // .f, .F, .for and .f90 Fortran source files
	SFiles            []string `json:",omitempty"` // .s source files
	SwigFiles         []string `json:",omitempty"` // .swig files
	SwigCXXFiles      []string `json:",omitempty"` // .swigcxx files
	SysoFiles         []string `json:",omitempty"` // .syso system object files added to package

	// Embedded files
	EmbedPatterns []string `json:",omitempty"` // //go:embed patterns
	EmbedFiles    []string `json:",omitempty"` // files matched by EmbedPatterns

	// Cgo directives
	CgoCFLAGS    []string `json:",omitempty"` // cgo: flags for C compiler
	CgoCPPFLAGS  []string `json:",omitempty"` // cgo: flags for C preprocessor
	CgoCXXFLAGS  []string `json:",omitempty"` // cgo: flags for C++ compiler
	CgoFFLAGS    []string `json:",omitempty"` // cgo: flags for Fortran compiler
	CgoLDFLAGS   []string `json:",omitempty"` // cgo: flags for linker
	CgoPkgConfig []string `json:",omitempty"` // cgo: pkg-config names

	// Dependency information
	Imports   []string          `json:",omitempty"` // import paths used by this package
	ImportMap map[string]string `json:",omitempty"` // map from source import to ImportPath (identity entries omitted)
	Deps      []string          `json:",omitempty"` // all (recursively) imported dependencies

	// Error information
	// Incomplete is above, packed into the other bools
	Error      *PackageError   `json:",omitempty"` // error loading this package (not dependencies)
	DepsErrors []*PackageError `json:",omitempty"` // errors loading dependencies, collected by go list before output

	// Test information
	// If you add to this list you MUST add to p.AllFiles (below) too.
	// Otherwise file name security lists will not apply to any new additions.
	TestGoFiles        []string `json:",omitempty"` // _test.go files in package
	TestImports        []string `json:",omitempty"` // imports from TestGoFiles
	TestEmbedPatterns  []string `json:",omitempty"` // //go:embed patterns
	TestEmbedFiles     []string `json:",omitempty"` // files matched by TestEmbedPatterns
	XTestGoFiles       []string `json:",omitempty"` // _test.go files outside package
	XTestImports       []string `json:",omitempty"` // imports from XTestGoFiles
	XTestEmbedPatterns []string `json:",omitempty"` // //go:embed patterns
	XTestEmbedFiles    []string `json:",omitempty"` // files matched by XTestEmbedPatterns
}

type PerPackageFlag 

type PerPackageFlag struct {
	// contains filtered or unexported fields
}

A PerPackageFlag is a command-line flag implementation (a flag.Value) that allows specifying different effective flags for different packages. See 'go help build' for more details about per-package flags. 

var (
	BuildAsmflags   PerPackageFlag // -asmflags
	BuildGcflags    PerPackageFlag // -gcflags
	BuildLdflags    PerPackageFlag // -ldflags
	BuildGccgoflags PerPackageFlag // -gccgoflags
)

func (*PerPackageFlag) For 

func (f *PerPackageFlag) For(p *Package) []string

For returns the flags to use for the given package.

func (*PerPackageFlag) Present 

func (f *PerPackageFlag) Present() bool

Present reports whether the flag appeared on the command line.

func (*PerPackageFlag) Set 

func (f *PerPackageFlag) Set(v string) error

Set is called each time the flag is encountered on the command line.

func (*PerPackageFlag) String 

func (f *PerPackageFlag) String() string

type TargetDir 

type TargetDir int
const (
	ToTool    TargetDir = iota // to GOROOT/pkg/tool (default for cmd/*)
	ToBin                      // to bin dir inside package root (default for non-cmd/*)
	StalePath                  // an old import path; fail to build
)

func InstallTargetDir 

func InstallTargetDir(p *Package) TargetDir

InstallTargetDir reports the target directory for installing the command p.

type TestCover 

type TestCover struct {
	Mode  string
	Local bool
	Pkgs  []*Package
	Paths []string
	Vars  []coverInfo
}

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