tools

module
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 Go to latest Published: Mar 4, 2024 License: BSD-3-Clause

README

Go Tools

PkgGoDev

This repository provides the golang.org/x/tools module, comprising various tools and packages mostly for static analysis of Go programs, some of which are listed below. Use the "Go reference" link above for more information about any package.

It also contains the golang.org/x/tools/gopls module, whose root package is a language-server protocol (LSP) server for Go. An LSP server analyses the source code of a project and responds to requests from a wide range of editors such as VSCode and Vim, allowing them to support IDE-like functionality.

Selected commands:

  • cmd/goimports formats a Go program like go fmt and additionally inserts import statements for any packages required by the file after it is edited.
  • cmd/callgraph prints the call graph of a Go program.
  • cmd/digraph is a utility for manipulating directed graphs in textual notation.
  • cmd/stringer generates declarations (including a String method) for "enum" types.
  • cmd/toolstash is a utility to simplify working with multiple versions of the Go toolchain.

These commands may be fetched with a command such as

go install golang.org/x/tools/cmd/goimports@latest

Selected packages:

  • go/ssa provides a static single-assignment form (SSA) intermediate representation (IR) for Go programs, similar to a typical compiler, for use by analysis tools.

  • go/packages provides a simple interface for loading, parsing, and type checking a complete Go program from source code.

  • go/analysis provides a framework for modular static analysis of Go programs.

  • go/callgraph provides call graphs of Go programs using a variety of algorithms with different trade-offs.

  • go/ast/inspector provides an optimized means of traversing a Go parse tree for use in analysis tools.

  • go/cfg provides a simple control-flow graph (CFG) for a Go function.

  • go/expect reads Go source files used as test inputs and interprets special comments within them as queries or assertions for testing.

  • go/gcexportdata and go/gccgoexportdata read and write the binary files containing type information used by the standard and gccgo compilers.

  • go/types/objectpath provides a stable naming scheme for named entities ("objects") in the go/types API.

Numerous other packages provide more esoteric functionality.

Contributing

This repository uses Gerrit for code changes. To learn how to submit changes, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with "x/tools/(your subdir):" in the subject line, so it is easy to find.

JavaScript and CSS Formatting

This repository uses prettier to format JS and CSS files.

The version of prettier used is 1.18.2.

It is encouraged that all JS and CSS code be run through this before submitting a change. However, it is not a strict requirement enforced by CI.

Directories

Path Synopsis
benchmark
parse
Package parse provides support for parsing benchmark results as generated by 'go test -bench'.
 Package parse provides support for parsing benchmark results as generated by 'go test -bench'.
Package blog implements a web server for articles written in present format.
 Package blog implements a web server for articles written in present format.
atom
Package atom defines XML data structures for an Atom feed.
 Package atom defines XML data structures for an Atom feed.
cmd
auth/authtest
authtest is a diagnostic tool for implementations of the GOAUTH protocol described in https://golang.org/issue/26232.
 authtest is a diagnostic tool for implementations of the GOAUTH protocol described in https://golang.org/issue/26232.
auth/cookieauth
cookieauth uses a “Netscape cookie file” to implement the GOAUTH protocol described in https://golang.org/issue/26232.
 cookieauth uses a “Netscape cookie file” to implement the GOAUTH protocol described in https://golang.org/issue/26232.
auth/gitauth
gitauth uses 'git credential' to implement the GOAUTH protocol described in https://golang.org/issue/26232.
 gitauth uses 'git credential' to implement the GOAUTH protocol described in https://golang.org/issue/26232.
auth/netrcauth
netrcauth uses a .netrc file (or _netrc file on Windows) to implement the GOAUTH protocol described in https://golang.org/issue/26232.
 netrcauth uses a .netrc file (or _netrc file on Windows) to implement the GOAUTH protocol described in https://golang.org/issue/26232.
benchcmp
Deprecated: benchcmp is deprecated in favor of benchstat: golang.org/x/perf/cmd/benchstat
 Deprecated: benchcmp is deprecated in favor of benchstat: golang.org/x/perf/cmd/benchstat
bisect
Bisect finds changes responsible for causing a failure.
 Bisect finds changes responsible for causing a failure.
bundle
Bundle creates a single-source-file version of a source package suitable for inclusion in a particular target package.
 Bundle creates a single-source-file version of a source package suitable for inclusion in a particular target package.
callgraph
callgraph: a tool for reporting the call graph of a Go program.
 callgraph: a tool for reporting the call graph of a Go program.
compilebench
Compilebench benchmarks the speed of the Go compiler.
 Compilebench benchmarks the speed of the Go compiler.
deadcode
The deadcode command reports unreachable functions in Go programs.
 The deadcode command reports unreachable functions in Go programs.
digraph
eg
The eg command performs example-based refactoring.
 The eg command performs example-based refactoring.
file2fuzz
file2fuzz converts binary files, such as those used by go-fuzz, to the Go fuzzing corpus format.
 file2fuzz converts binary files, such as those used by go-fuzz, to the Go fuzzing corpus format.
fiximports
The fiximports command fixes import declarations to use the canonical import path for packages that have an "import comment" as defined by https://golang.org/s/go14customimport.
 The fiximports command fixes import declarations to use the canonical import path for packages that have an "import comment" as defined by https://golang.org/s/go14customimport.
go-contrib-init
The go-contrib-init command helps new Go contributors get their development environment set up for the Go contribution process.
 The go-contrib-init command helps new Go contributors get their development environment set up for the Go contribution process.
godex
The godex command prints (dumps) exported information of packages or selected package objects.
 The godex command prints (dumps) exported information of packages or selected package objects.
godoc
Godoc extracts and generates documentation for Go programs.
 Godoc extracts and generates documentation for Go programs.
goimports
Command goimports updates your Go import lines, adding missing ones and removing unreferenced ones.
 Command goimports updates your Go import lines, adding missing ones and removing unreferenced ones.
gomvpkg
The gomvpkg command moves go packages, updating import declarations.
 The gomvpkg command moves go packages, updating import declarations.
gonew
Gonew starts a new Go module by copying a template module.
 Gonew starts a new Go module by copying a template module.
gorename
The gorename command performs precise type-safe renaming of identifiers in Go source code.
 The gorename command performs precise type-safe renaming of identifiers in Go source code.
gotype
The gotype command, like the front-end of a Go compiler, parses and type-checks a single Go package.
 The gotype command, like the front-end of a Go compiler, parses and type-checks a single Go package.
goyacc
Goyacc is a version of yacc for Go.
 Goyacc is a version of yacc for Go.
guru
guru: a tool for answering questions about Go source code.
 guru: a tool for answering questions about Go source code.
guru/serial
Package serial defines the guru's schema for -json output.
 Package serial defines the guru's schema for -json output.
html2article
This program takes an HTML file and outputs a corresponding article file in present format.
 This program takes an HTML file and outputs a corresponding article file in present format.
present
Present displays slide presentations and articles.
 Present displays slide presentations and articles.
present2md
Present2md converts legacy-syntax present files to Markdown-syntax present files.
 Present2md converts legacy-syntax present files to Markdown-syntax present files.
signature-fuzzer/fuzz-driver
signature-fuzzer/fuzz-runner
signature-fuzzer/internal/fuzz-generator
splitdwarf
Splitdwarf uncompresses and copies the DWARF segment of a Mach-O executable into the "dSYM" file expected by lldb and ports of gdb on OSX.
 Splitdwarf uncompresses and copies the DWARF segment of a Mach-O executable into the "dSYM" file expected by lldb and ports of gdb on OSX.
splitdwarf/internal/macho
Package macho implements access to Mach-O object files.
 Package macho implements access to Mach-O object files.
ssadump
ssadump: a tool for displaying and interpreting the SSA form of Go programs.
 ssadump: a tool for displaying and interpreting the SSA form of Go programs.
stress
The stress utility is intended for catching sporadic failures.
 The stress utility is intended for catching sporadic failures.
stringer
Stringer is a tool to automate the creation of methods that satisfy the fmt.Stringer interface.
 Stringer is a tool to automate the creation of methods that satisfy the fmt.Stringer interface.
toolstash
Toolstash provides a way to save, run, and restore a known good copy of the Go toolchain and to compare the object files generated by two toolchains.
 Toolstash provides a way to save, run, and restore a known good copy of the Go toolchain and to compare the object files generated by two toolchains.
cover Module
getgo Module
container
intsets
Package intsets provides Sparse, a compact and fast representation for sparse sets of int values.
 Package intsets provides Sparse, a compact and fast representation for sparse sets of int values.
Package copyright checks that files have the correct copyright notices.
 Package copyright checks that files have the correct copyright notices.
Package cover provides support for parsing coverage profiles generated by "go test -coverprofile=cover.out".
 Package cover provides support for parsing coverage profiles generated by "go test -coverprofile=cover.out".
go
analysis
Package analysis defines the interface between a modular static analysis and an analysis driver program.
 Package analysis defines the interface between a modular static analysis and an analysis driver program.
analysis/analysistest
Package analysistest provides utilities for testing analyzers.
 Package analysistest provides utilities for testing analyzers.
analysis/internal/analysisflags
Package analysisflags defines helpers for processing flags of analysis driver tools.
 Package analysisflags defines helpers for processing flags of analysis driver tools.
analysis/internal/checker
Package checker defines the implementation of the checker commands.
 Package checker defines the implementation of the checker commands.
analysis/multichecker
Package multichecker defines the main function for an analysis driver with several analyzers.
 Package multichecker defines the main function for an analysis driver with several analyzers.
analysis/passes/appends
Package appends defines an Analyzer that detects if there is only one variable in append.
 Package appends defines an Analyzer that detects if there is only one variable in append.
analysis/passes/asmdecl
Package asmdecl defines an Analyzer that reports mismatches between assembly files and Go declarations.
 Package asmdecl defines an Analyzer that reports mismatches between assembly files and Go declarations.
analysis/passes/assign
Package assign defines an Analyzer that detects useless assignments.
 Package assign defines an Analyzer that detects useless assignments.
analysis/passes/atomic
Package atomic defines an Analyzer that checks for common mistakes using the sync/atomic package.
 Package atomic defines an Analyzer that checks for common mistakes using the sync/atomic package.
analysis/passes/atomicalign
Package atomicalign defines an Analyzer that checks for non-64-bit-aligned arguments to sync/atomic functions.
 Package atomicalign defines an Analyzer that checks for non-64-bit-aligned arguments to sync/atomic functions.
analysis/passes/bools
Package bools defines an Analyzer that detects common mistakes involving boolean operators.
 Package bools defines an Analyzer that detects common mistakes involving boolean operators.
analysis/passes/buildssa
Package buildssa defines an Analyzer that constructs the SSA representation of an error-free package and returns the set of all functions within it.
 Package buildssa defines an Analyzer that constructs the SSA representation of an error-free package and returns the set of all functions within it.
analysis/passes/buildtag
Package buildtag defines an Analyzer that checks build tags.
 Package buildtag defines an Analyzer that checks build tags.
analysis/passes/cgocall
Package cgocall defines an Analyzer that detects some violations of the cgo pointer passing rules.
 Package cgocall defines an Analyzer that detects some violations of the cgo pointer passing rules.
analysis/passes/composite
Package composite defines an Analyzer that checks for unkeyed composite literals.
 Package composite defines an Analyzer that checks for unkeyed composite literals.
analysis/passes/copylock
Package copylock defines an Analyzer that checks for locks erroneously passed by value.
 Package copylock defines an Analyzer that checks for locks erroneously passed by value.
analysis/passes/ctrlflow
Package ctrlflow is an analysis that provides a syntactic control-flow graph (CFG) for the body of a function.
 Package ctrlflow is an analysis that provides a syntactic control-flow graph (CFG) for the body of a function.
analysis/passes/deepequalerrors
Package deepequalerrors defines an Analyzer that checks for the use of reflect.DeepEqual with error values.
 Package deepequalerrors defines an Analyzer that checks for the use of reflect.DeepEqual with error values.
analysis/passes/defers
Package defers defines an Analyzer that checks for common mistakes in defer statements.
 Package defers defines an Analyzer that checks for common mistakes in defer statements.
analysis/passes/defers/cmd/defers
The defers command runs the defers analyzer.
 The defers command runs the defers analyzer.
analysis/passes/directive
Package directive defines an Analyzer that checks known Go toolchain directives.
 Package directive defines an Analyzer that checks known Go toolchain directives.
analysis/passes/errorsas
The errorsas package defines an Analyzer that checks that the second argument to errors.As is a pointer to a type implementing error.
 The errorsas package defines an Analyzer that checks that the second argument to errors.As is a pointer to a type implementing error.
analysis/passes/fieldalignment
Package fieldalignment defines an Analyzer that detects structs that would use less memory if their fields were sorted.
 Package fieldalignment defines an Analyzer that detects structs that would use less memory if their fields were sorted.
analysis/passes/fieldalignment/cmd/fieldalignment
analysis/passes/findcall
Package findcall defines an Analyzer that serves as a trivial example and test of the Analysis API.
 Package findcall defines an Analyzer that serves as a trivial example and test of the Analysis API.
analysis/passes/findcall/cmd/findcall
The findcall command runs the findcall analyzer.
 The findcall command runs the findcall analyzer.
analysis/passes/framepointer
Package framepointer defines an Analyzer that reports assembly code that clobbers the frame pointer before saving it.
 Package framepointer defines an Analyzer that reports assembly code that clobbers the frame pointer before saving it.
analysis/passes/httpmux
analysis/passes/httpmux/cmd/httpmux
The httpmux command runs the httpmux analyzer.
 The httpmux command runs the httpmux analyzer.
analysis/passes/httpresponse
Package httpresponse defines an Analyzer that checks for mistakes using HTTP responses.
 Package httpresponse defines an Analyzer that checks for mistakes using HTTP responses.
analysis/passes/ifaceassert
Package ifaceassert defines an Analyzer that flags impossible interface-interface type assertions.
 Package ifaceassert defines an Analyzer that flags impossible interface-interface type assertions.
analysis/passes/ifaceassert/cmd/ifaceassert
The ifaceassert command runs the ifaceassert analyzer.
 The ifaceassert command runs the ifaceassert analyzer.
analysis/passes/inspect
Package inspect defines an Analyzer that provides an AST inspector (golang.org/x/tools/go/ast/inspector.Inspector) for the syntax trees of a package.
 Package inspect defines an Analyzer that provides an AST inspector (golang.org/x/tools/go/ast/inspector.Inspector) for the syntax trees of a package.
analysis/passes/internal/analysisutil
Package analysisutil defines various helper functions used by two or more packages beneath go/analysis.
 Package analysisutil defines various helper functions used by two or more packages beneath go/analysis.
analysis/passes/loopclosure
Package loopclosure defines an Analyzer that checks for references to enclosing loop variables from within nested functions.
 Package loopclosure defines an Analyzer that checks for references to enclosing loop variables from within nested functions.
analysis/passes/lostcancel
Package lostcancel defines an Analyzer that checks for failure to call a context cancellation function.
 Package lostcancel defines an Analyzer that checks for failure to call a context cancellation function.
analysis/passes/lostcancel/cmd/lostcancel
The lostcancel command applies the golang.org/x/tools/go/analysis/passes/lostcancel analysis to the specified packages of Go source code.
 The lostcancel command applies the golang.org/x/tools/go/analysis/passes/lostcancel analysis to the specified packages of Go source code.
analysis/passes/nilfunc
Package nilfunc defines an Analyzer that checks for useless comparisons against nil.
 Package nilfunc defines an Analyzer that checks for useless comparisons against nil.
analysis/passes/nilness
Package nilness inspects the control-flow graph of an SSA function and reports errors such as nil pointer dereferences and degenerate nil pointer comparisons.
 Package nilness inspects the control-flow graph of an SSA function and reports errors such as nil pointer dereferences and degenerate nil pointer comparisons.
analysis/passes/nilness/cmd/nilness
The nilness command applies the golang.org/x/tools/go/analysis/passes/nilness analysis to the specified packages of Go source code.
 The nilness command applies the golang.org/x/tools/go/analysis/passes/nilness analysis to the specified packages of Go source code.
analysis/passes/pkgfact
The pkgfact package is a demonstration and test of the package fact mechanism.
 The pkgfact package is a demonstration and test of the package fact mechanism.
analysis/passes/printf
Package printf defines an Analyzer that checks consistency of Printf format strings and arguments.
 Package printf defines an Analyzer that checks consistency of Printf format strings and arguments.
analysis/passes/reflectvaluecompare
Package reflectvaluecompare defines an Analyzer that checks for accidentally using == or reflect.DeepEqual to compare reflect.Value values.
 Package reflectvaluecompare defines an Analyzer that checks for accidentally using == or reflect.DeepEqual to compare reflect.Value values.
analysis/passes/shadow
Package shadow defines an Analyzer that checks for shadowed variables.
 Package shadow defines an Analyzer that checks for shadowed variables.
analysis/passes/shadow/cmd/shadow
The shadow command runs the shadow analyzer.
 The shadow command runs the shadow analyzer.
analysis/passes/shift
Package shift defines an Analyzer that checks for shifts that exceed the width of an integer.
 Package shift defines an Analyzer that checks for shifts that exceed the width of an integer.
analysis/passes/sigchanyzer
Package sigchanyzer defines an Analyzer that detects misuse of unbuffered signal as argument to signal.Notify.
 Package sigchanyzer defines an Analyzer that detects misuse of unbuffered signal as argument to signal.Notify.
analysis/passes/slog
Package slog defines an Analyzer that checks for mismatched key-value pairs in log/slog calls.
 Package slog defines an Analyzer that checks for mismatched key-value pairs in log/slog calls.
analysis/passes/sortslice
Package sortslice defines an Analyzer that checks for calls to sort.Slice that do not use a slice type as first argument.
 Package sortslice defines an Analyzer that checks for calls to sort.Slice that do not use a slice type as first argument.
analysis/passes/stdmethods
Package stdmethods defines an Analyzer that checks for misspellings in the signatures of methods similar to well-known interfaces.
 Package stdmethods defines an Analyzer that checks for misspellings in the signatures of methods similar to well-known interfaces.
analysis/passes/stringintconv
Package stringintconv defines an Analyzer that flags type conversions from integers to strings.
 Package stringintconv defines an Analyzer that flags type conversions from integers to strings.
analysis/passes/stringintconv/cmd/stringintconv
The stringintconv command runs the stringintconv analyzer.
 The stringintconv command runs the stringintconv analyzer.
analysis/passes/structtag
Package structtag defines an Analyzer that checks struct field tags are well formed.
 Package structtag defines an Analyzer that checks struct field tags are well formed.
analysis/passes/testinggoroutine
Package testinggoroutine defines an Analyzerfor detecting calls to Fatal from a test goroutine.
 Package testinggoroutine defines an Analyzerfor detecting calls to Fatal from a test goroutine.
analysis/passes/tests
Package tests defines an Analyzer that checks for common mistaken usages of tests and examples.
 Package tests defines an Analyzer that checks for common mistaken usages of tests and examples.
analysis/passes/timeformat
Package timeformat defines an Analyzer that checks for the use of time.Format or time.Parse calls with a bad format.
 Package timeformat defines an Analyzer that checks for the use of time.Format or time.Parse calls with a bad format.
analysis/passes/unmarshal
The unmarshal package defines an Analyzer that checks for passing non-pointer or non-interface types to unmarshal and decode functions.
 The unmarshal package defines an Analyzer that checks for passing non-pointer or non-interface types to unmarshal and decode functions.
analysis/passes/unmarshal/cmd/unmarshal
The unmarshal command runs the unmarshal analyzer.
 The unmarshal command runs the unmarshal analyzer.
analysis/passes/unreachable
Package unreachable defines an Analyzer that checks for unreachable code.
 Package unreachable defines an Analyzer that checks for unreachable code.
analysis/passes/unsafeptr
Package unsafeptr defines an Analyzer that checks for invalid conversions of uintptr to unsafe.Pointer.
 Package unsafeptr defines an Analyzer that checks for invalid conversions of uintptr to unsafe.Pointer.
analysis/passes/unusedresult
Package unusedresult defines an analyzer that checks for unused results of calls to certain pure functions.
 Package unusedresult defines an analyzer that checks for unused results of calls to certain pure functions.
analysis/passes/unusedresult/cmd/unusedresult
The unusedresult command applies the golang.org/x/tools/go/analysis/passes/unusedresult analysis to the specified packages of Go source code.
 The unusedresult command applies the golang.org/x/tools/go/analysis/passes/unusedresult analysis to the specified packages of Go source code.
analysis/passes/unusedwrite
Package unusedwrite checks for unused writes to the elements of a struct or array object.
 Package unusedwrite checks for unused writes to the elements of a struct or array object.
analysis/passes/usesgenerics
Package usesgenerics defines an Analyzer that checks for usage of generic features added in Go 1.18.
 Package usesgenerics defines an Analyzer that checks for usage of generic features added in Go 1.18.
analysis/singlechecker
Package singlechecker defines the main function for an analysis driver with only a single analysis.
 Package singlechecker defines the main function for an analysis driver with only a single analysis.
analysis/unitchecker
The unitchecker package defines the main function for an analysis driver that analyzes a single compilation unit during a build.
 The unitchecker package defines the main function for an analysis driver that analyzes a single compilation unit during a build.
ast/astutil
Package astutil contains common utilities for working with the Go AST.
 Package astutil contains common utilities for working with the Go AST.
ast/inspector
Package inspector provides helper functions for traversal over the syntax trees of a package, including node filtering by type, and materialization of the traversal stack.
 Package inspector provides helper functions for traversal over the syntax trees of a package, including node filtering by type, and materialization of the traversal stack.
buildutil
Package buildutil provides utilities related to the go/build package in the standard library.
 Package buildutil provides utilities related to the go/build package in the standard library.
callgraph
Package callgraph defines the call graph and various algorithms and utilities to operate on it.
 Package callgraph defines the call graph and various algorithms and utilities to operate on it.
callgraph/cha
Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.
 Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.
callgraph/rta
This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.
 This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.
callgraph/static
Package static computes the call graph of a Go program containing only static call edges.
 Package static computes the call graph of a Go program containing only static call edges.
callgraph/vta
Package vta computes the call graph of a Go program using the Variable Type Analysis (VTA) algorithm originally described in “Practical Virtual Method Call Resolution for Java," Vijay Sundaresan, Laurie Hendren, Chrislain Razafimahefa, Raja Vallée-Rai, Patrick Lam, Etienne Gagnon, and Charles Godin.
 Package vta computes the call graph of a Go program using the Variable Type Analysis (VTA) algorithm originally described in “Practical Virtual Method Call Resolution for Java," Vijay Sundaresan, Laurie Hendren, Chrislain Razafimahefa, Raja Vallée-Rai, Patrick Lam, Etienne Gagnon, and Charles Godin.
callgraph/vta/internal/trie
trie implements persistent Patricia trie maps.
 trie implements persistent Patricia trie maps.
cfg
Package cfg constructs a simple control-flow graph (CFG) of the statements and expressions within a single function.
 Package cfg constructs a simple control-flow graph (CFG) of the statements and expressions within a single function.
expect
Package expect provides support for interpreting structured comments in Go source code as test expectations.
 Package expect provides support for interpreting structured comments in Go source code as test expectations.
gccgoexportdata
Package gccgoexportdata provides functions for reading export data files containing type information produced by the gccgo compiler.
 Package gccgoexportdata provides functions for reading export data files containing type information produced by the gccgo compiler.
gcexportdata
Package gcexportdata provides functions for locating, reading, and writing export data files containing type information produced by the gc compiler.
 Package gcexportdata provides functions for locating, reading, and writing export data files containing type information produced by the gc compiler.
internal/cgo
internal/gccgoimporter
Package gccgoimporter implements Import for gccgo-generated object files.
 Package gccgoimporter implements Import for gccgo-generated object files.
internal/packagesdriver
Package packagesdriver fetches type sizes for go/packages and go/analysis.
 Package packagesdriver fetches type sizes for go/packages and go/analysis.
loader
Package loader loads a complete Go program from source code, parsing and type-checking the initial packages plus their transitive closure of dependencies.
 Package loader loads a complete Go program from source code, parsing and type-checking the initial packages plus their transitive closure of dependencies.
packages
Package packages loads Go packages for inspection and analysis.
 Package packages loads Go packages for inspection and analysis.
packages/gopackages
The gopackages command is a diagnostic tool that demonstrates how to use golang.org/x/tools/go/packages to load, parse, type-check, and print one or more Go packages.
 The gopackages command is a diagnostic tool that demonstrates how to use golang.org/x/tools/go/packages to load, parse, type-check, and print one or more Go packages.
packages/internal/nodecount
The nodecount program illustrates the use of packages.Load to print the frequency of occurrence of each type of syntax node among the selected packages.
 The nodecount program illustrates the use of packages.Load to print the frequency of occurrence of each type of syntax node among the selected packages.
packages/packagestest
Package packagestest creates temporary projects on disk for testing go tools on.
 Package packagestest creates temporary projects on disk for testing go tools on.
ssa
Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.
 Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.
ssa/interp
Package ssa/interp defines an interpreter for the SSA representation of Go programs.
 Package ssa/interp defines an interpreter for the SSA representation of Go programs.
ssa/ssautil
types/internal/play
The play program is a playground for go/types: a simple web-based text editor into which the user can enter a Go program, select a region, and see type information about it.
 The play program is a playground for go/types: a simple web-based text editor into which the user can enter a Go program, select a region, and see type information about it.
types/objectpath
Package objectpath defines a naming scheme for types.Objects (that is, named entities in Go programs) relative to their enclosing package.
 Package objectpath defines a naming scheme for types.Objects (that is, named entities in Go programs) relative to their enclosing package.
types/typeutil
Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.
 Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.
pointer Module
vcs Module
Package godoc is a work-in-progress (2013-07-17) package to begin splitting up the godoc binary into multiple pieces.
 Package godoc is a work-in-progress (2013-07-17) package to begin splitting up the godoc binary into multiple pieces.
analysis
Package analysis performs type and pointer analysis and generates mark-up for the Go source view.
 Package analysis performs type and pointer analysis and generates mark-up for the Go source view.
redirect
Package redirect provides hooks to register HTTP handlers that redirect old godoc paths to their new equivalents.
 Package redirect provides hooks to register HTTP handlers that redirect old godoc paths to their new equivalents.
static
Package static exports a map of static file content that supports the godoc user interface.
 Package static exports a map of static file content that supports the godoc user interface.
util
Package util contains utility types and functions for godoc.
 Package util contains utility types and functions for godoc.
vfs
Package vfs defines types for abstract file system access and provides an implementation accessing the file system of the underlying OS.
 Package vfs defines types for abstract file system access and provides an implementation accessing the file system of the underlying OS.
vfs/gatefs
Package gatefs provides an implementation of the FileSystem interface that wraps another FileSystem and limits its concurrency.
 Package gatefs provides an implementation of the FileSystem interface that wraps another FileSystem and limits its concurrency.
vfs/httpfs
Package httpfs implements http.FileSystem using a godoc vfs.FileSystem.
 Package httpfs implements http.FileSystem using a godoc vfs.FileSystem.
vfs/mapfs
Package mapfs file provides an implementation of the FileSystem interface based on the contents of a map[string]string.
 Package mapfs file provides an implementation of the FileSystem interface based on the contents of a map[string]string.
vfs/zipfs
Package zipfs file provides an implementation of the FileSystem interface based on the contents of a .zip file.
 Package zipfs file provides an implementation of the FileSystem interface based on the contents of a .zip file.
gopls module
doc/assets Module
Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.
 Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.
internal
aliases
analysisinternal
Package analysisinternal provides gopls' internal analyses with a number of helper functions that operate on typed syntax trees.
 Package analysisinternal provides gopls' internal analyses with a number of helper functions that operate on typed syntax trees.
apidiff
astutil
bisect
Package bisect can be used by compilers and other programs to serve as a target for the bisect debugging tool.
 Package bisect can be used by compilers and other programs to serve as a target for the bisect debugging tool.
diff
Package diff computes differences between text files or strings.
 Package diff computes differences between text files or strings.
diff/difftest
Package difftest supplies a set of tests that will operate on any implementation of a diff algorithm as exposed by "golang.org/x/tools/internal/diff"
 Package difftest supplies a set of tests that will operate on any implementation of a diff algorithm as exposed by "golang.org/x/tools/internal/diff"
diff/lcs
package lcs contains code to find longest-common-subsequences (and diffs)
 package lcs contains code to find longest-common-subsequences (and diffs)
diff/myers
Package myers implements the Myers diff algorithm.
 Package myers implements the Myers diff algorithm.
diffp
Package diffp implements a basic diff algorithm equivalent to patience diff.
 Package diffp implements a basic diff algorithm equivalent to patience diff.
edit
Package edit implements buffered position-based editing of byte slices.
 Package edit implements buffered position-based editing of byte slices.
event
Package event provides a set of packages that cover the main concepts of telemetry in an implementation agnostic way.
 Package event provides a set of packages that cover the main concepts of telemetry in an implementation agnostic way.
event/core
Package core provides support for event based telemetry.
 Package core provides support for event based telemetry.
event/export
event/export/eventtest
Package eventtest supports logging events to a test.
 Package eventtest supports logging events to a test.
event/export/metric
Package metric aggregates events into metrics that can be exported.
 Package metric aggregates events into metrics that can be exported.
event/export/ocagent
Package ocagent adds the ability to export all telemetry to an ocagent.
 Package ocagent adds the ability to export all telemetry to an ocagent.
event/export/ocagent/wire
event/export/prometheus
event/keys
event/label
event/tag
Package tag provides the labels used for telemetry throughout gopls.
 Package tag provides the labels used for telemetry throughout gopls.
facts
Package facts defines a serializable set of analysis.Fact.
 Package facts defines a serializable set of analysis.Fact.
fakenet
fuzzy
Package fuzzy implements a fuzzy matching algorithm.
 Package fuzzy implements a fuzzy matching algorithm.
gcimporter
Package gcimporter provides various functions for reading gc-generated object files that can be used to implement the Importer interface defined by the Go 1.5 standard library package.
 Package gcimporter provides various functions for reading gc-generated object files that can be used to implement the Importer interface defined by the Go 1.5 standard library package.
gocommand
Package gocommand is a helper for calling the go command.
 Package gocommand is a helper for calling the go command.
gopathwalk
Package gopathwalk is like filepath.Walk but specialized for finding Go packages, particularly in $GOPATH and $GOROOT.
 Package gopathwalk is like filepath.Walk but specialized for finding Go packages, particularly in $GOPATH and $GOROOT.
goroot
Package goroot is a copy of package internal/goroot in the main GO repot.
 Package goroot is a copy of package internal/goroot in the main GO repot.
imports
Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.
 Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.
jsonrpc2
Package jsonrpc2 is a minimal implementation of the JSON RPC 2 spec.
 Package jsonrpc2 is a minimal implementation of the JSON RPC 2 spec.
jsonrpc2/servertest
Package servertest provides utilities for running tests against a remote LSP server.
 Package servertest provides utilities for running tests against a remote LSP server.
jsonrpc2_v2
Package jsonrpc2 is a minimal implementation of the JSON RPC 2 spec.
 Package jsonrpc2 is a minimal implementation of the JSON RPC 2 spec.
memoize
Package memoize defines a "promise" abstraction that enables memoization of the result of calling an expensive but idempotent function.
 Package memoize defines a "promise" abstraction that enables memoization of the result of calling an expensive but idempotent function.
packagesinternal
Package packagesinternal exposes internal-only fields from go/packages.
 Package packagesinternal exposes internal-only fields from go/packages.
pkgbits
Package pkgbits implements low-level coding abstractions for Unified IR's export data format.
 Package pkgbits implements low-level coding abstractions for Unified IR's export data format.
pprof
Package pprof provides minimalistic routines for extracting information from profiles.
 Package pprof provides minimalistic routines for extracting information from profiles.
proxydir
Package proxydir provides functions for writing module data to a directory in proxy format, so that it can be used as a module proxy by setting GOPROXY="file://<dir>".
 Package proxydir provides functions for writing module data to a directory in proxy format, so that it can be used as a module proxy by setting GOPROXY="file://<dir>".
refactor/inline
Package inline implements inlining of Go function calls.
 Package inline implements inlining of Go function calls.
refactor/inline/analyzer
robustio
Package robustio wraps I/O functions that are prone to failure on Windows, transparently retrying errors up to an arbitrary timeout.
 Package robustio wraps I/O functions that are prone to failure on Windows, transparently retrying errors up to an arbitrary timeout.
stack
Package stack provides support for parsing standard goroutine stack traces.
 Package stack provides support for parsing standard goroutine stack traces.
stack/gostacks
The gostacks command processes stdin looking for things that look like stack traces and simplifying them to make the log more readable.
 The gostacks command processes stdin looking for things that look like stack traces and simplifying them to make the log more readable.
stack/stacktest
testenv
Package testenv contains helper functions for skipping tests based on which tools are present in the environment.
 Package testenv contains helper functions for skipping tests based on which tools are present in the environment.
tokeninternal
package tokeninternal provides access to some internal features of the token package.
 package tokeninternal provides access to some internal features of the token package.
tool
Package tool is a harness for writing Go tools.
 Package tool is a harness for writing Go tools.
typeparams
Package typeparams contains common utilities for writing tools that interact with generic Go code, as introduced with Go 1.18.
 Package typeparams contains common utilities for writing tools that interact with generic Go code, as introduced with Go 1.18.
typeparams/genericfeatures
The genericfeatures package provides utilities for detecting usage of generic programming in Go packages.
 The genericfeatures package provides utilities for detecting usage of generic programming in Go packages.
typesinternal
Package typesinternal provides access to internal go/types APIs that are not yet exported.
 Package typesinternal provides access to internal go/types APIs that are not yet exported.
versions
xcontext
Package xcontext is a package to offer the extra functionality we need from contexts that is not available from the standard context package.
 Package xcontext is a package to offer the extra functionality we need from contexts that is not available from the standard context package.
Package playground registers an HTTP handler at "/compile" that proxies requests to the golang.org playground service.
 Package playground registers an HTTP handler at "/compile" that proxies requests to the golang.org playground service.
socket
Package socket implements an WebSocket-based playground backend.
 Package socket implements an WebSocket-based playground backend.
Package present implements parsing and rendering of present files, which can be slide presentations as in golang.org/x/tools/cmd/present or articles as in golang.org/x/blog (the Go blog).
 Package present implements parsing and rendering of present files, which can be slide presentations as in golang.org/x/tools/cmd/present or articles as in golang.org/x/blog (the Go blog).
refactor
eg
Package eg implements the example-based refactoring tool whose command-line is defined in golang.org/x/tools/cmd/eg.
 Package eg implements the example-based refactoring tool whose command-line is defined in golang.org/x/tools/cmd/eg.
importgraph
Package importgraph computes the forward and reverse import dependency graphs for all packages in a Go workspace.
 Package importgraph computes the forward and reverse import dependency graphs for all packages in a Go workspace.
rename
Package rename contains the implementation of the 'gorename' command whose main function is in golang.org/x/tools/cmd/gorename.
 Package rename contains the implementation of the 'gorename' command whose main function is in golang.org/x/tools/cmd/gorename.
satisfy
Package satisfy inspects the type-checked ASTs of Go packages and reports the set of discovered type constraints of the form (lhs, rhs Type) where lhs is a non-trivial interface, rhs satisfies this interface, and this fact is necessary for the package to be well-typed.
 Package satisfy inspects the type-checked ASTs of Go packages and reports the set of discovered type constraints of the form (lhs, rhs Type) where lhs is a non-trivial interface, rhs satisfies this interface, and this fact is necessary for the package to be well-typed.
Package txtar implements a trivial text-based file archive format.
 Package txtar implements a trivial text-based file archive format.

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