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tools

module
v0.37.0Latest Latest
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This package is not in the latest version of its module.

Go to latest Published: Sep 10, 2025 License:BSD-3-Clause

Details

Repository

cs.opensource.google/go/x/tools

Links

README

Go Tools

PkgGoDev

This repository provides thegolang.org/x/tools module, comprisingvarious 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 thegolang.org/x/tools/goplsmodule, whose root package is a language-server protocol (LSP) server for Go.An LSP server analyses the source code of a project andresponds to requests from a wide range of editors such as VSCode andVim, allowing them to support IDE-like functionality.

Selected commands:

  • cmd/goimports formats a Go program likego fmt and additionallyinserts import statements for any packages required by the fileafter 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 aString 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) intermediaterepresentation (IR) for Go programs, similar to a typical compiler,for use by analysis tools.

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

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

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

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

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

  • go/gcexportdata andgo/gccgoexportdata read and write the binaryfiles containing type information used by the standard andgccgo compilers.

  • go/types/objectpath provides a stable naming scheme for namedentities ("objects") in thego/types API.

Numerous other packages provide more esoteric functionality.

Contributing

This repository uses Gerrit for code changes.To learn how to submit changes, seehttps://go.dev/doc/contribute.

The git repository ishttps://go.googlesource.com/tools.

The main issue tracker for the tools repository is located athttps://go.dev/issues. Prefix your issue with "x/tools/(yoursubdir):" in the subject line, so it is easy to find.

JavaScript and CSS Formatting

This repository usesprettier to format JS and CSS files.

The version ofprettier used is 1.18.2.

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

Directories

PathSynopsis
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
benchcmpcommand
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
bisectcommand
Bisect finds changes responsible for causing a failure.
Bisect finds changes responsible for causing a failure.
bundlecommand
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.
callgraphcommand
callgraph: a tool for reporting the call graph of a Go program.
callgraph: a tool for reporting the call graph of a Go program.
compilebenchcommand
Compilebench benchmarks the speed of the Go compiler.
Compilebench benchmarks the speed of the Go compiler.
deadcodecommand
The deadcode command reports unreachable functions in Go programs.
The deadcode command reports unreachable functions in Go programs.
digraphcommand
egcommand
The eg command performs example-based refactoring.
The eg command performs example-based refactoring.
file2fuzzcommand
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.
fiximportscommand
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-initcommand
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.
godexcommand
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.
goimportscommand
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.
gomvpkgcommand
The gomvpkg command moves go packages, updating import declarations.
The gomvpkg command moves go packages, updating import declarations.
gonewcommand
Gonew starts a new Go module by copying a template module.
Gonew starts a new Go module by copying a template module.
gotypecommand
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.
goyacccommand
Goyacc is a version of yacc for Go.
Goyacc is a version of yacc for Go.
html2articlecommand
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.
presentcommand
Present displays slide presentations and articles.
Present displays slide presentations and articles.
present2mdcommand
Present2md converts legacy-syntax present files to Markdown-syntax present files.
Present2md converts legacy-syntax present files to Markdown-syntax present files.
splitdwarfcommand
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.
ssadumpcommand
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.
stresscommand
The stress utility is intended for catching sporadic failures.
The stress utility is intended for catching sporadic failures.
stringercommand
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.
toolstashcommand
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.
authmodule
covermodule
getgomodule
godocmodule
gorenamemodule
gurumodule
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/checker
Package checker provides an analysis driver based on the golang.org/x/tools/go/packages representation of a set of packages and all their dependencies, as produced by packages.Load.
Package checker provides an analysis driver based on the golang.org/x/tools/go/packages representation of a set of packages and all their dependencies, as produced by packages.Load.
analysis/internal/analysisflags
Package analysisflags defines helpers for processing flags (-help, -json, -fix, -diff, etc) common to unitchecker and {single,multi}checker.
Package analysisflags defines helpers for processing flags (-help, -json, -fix, -diff, etc) common to unitchecker and {single,multi}checker.
analysis/internal/checker
Package internal/checker defines various implementation helpers for the singlechecker and multichecker packages, which provide the complete main function for an analysis driver executable based on go/packages.
Package internal/checker defines various implementation helpers for the singlechecker and multichecker packages, which provide the complete main function for an analysis driver executable based on go/packages.
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/deferscommand
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/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/findcallcommand
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/gofix
Package gofix defines an Analyzer that checks "//go:fix inline" directives.
Package gofix defines an Analyzer that checks "//go:fix inline" directives.
analysis/passes/hostport
Package hostport defines an analyzer for calls to net.Dial with addresses of the form "%s:%d" or "%s:%s", which work only with IPv4.
Package hostport defines an analyzer for calls to net.Dial with addresses of the form "%s:%d" or "%s:%s", which work only with IPv4.
analysis/passes/httpmux/cmd/httpmuxcommand
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/ifaceassertcommand
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/lostcancelcommand
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/nilnesscommand
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/reflectvaluecompare/cmd/reflectvaluecomparecommand
The reflectvaluecompare command applies the reflectvaluecompare checker to the specified packages of Go source code.
The reflectvaluecompare command applies the reflectvaluecompare checker to the specified packages of Go source code.
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/shadowcommand
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/stdversion
Package stdversion reports uses of standard library symbols that are "too new" for the Go version in force in the referring file.
Package stdversion reports uses of standard library symbols that are "too new" for the Go version in force in the referring file.
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/stringintconvcommand
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/unmarshalcommand
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/unusedresultcommand
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/passes/waitgroup
Package waitgroup defines an Analyzer that detects simple misuses of sync.WaitGroup.
Package waitgroup defines an Analyzer that detects simple misuses of sync.WaitGroup.
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/edge
Package edge defines identifiers for each field of an ast.Node struct type that refers to another Node.
Package edge defines identifiers for each field of an ast.Node struct type that refers to another Node.
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/internal/chautil
Package chautil provides helper functions related to class hierarchy analysis (CHA) for use in x/tools.
Package chautil provides helper functions related to class hierarchy analysis (CHA) for use in x/tools.
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.
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 reading and writing export data, which is a serialized description of the API of a Go package including the names, kinds, types, and locations of all exported declarations.
Package gcexportdata provides functions for reading and writing export data, which is a serialized description of the API of a Go package including the names, kinds, types, and locations of all exported declarations.
internal/gccgoimporter
Package gccgoimporter implements Import for gccgo-generated object files.
Package gccgoimporter implements Import for gccgo-generated object files.
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/gopackagescommand
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/linecountcommand
The linecount command shows the number of lines of code in a set of Go packages plus their dependencies.
The linecount command shows the number of lines of code in a set of Go packages plus their dependencies.
packages/internal/nodecountcommand
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.
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.
types/internal/playcommand
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 hash table that maps types.Type to any value.
Package typeutil defines various utilities for types, such as Map, a hash table that maps types.Type to any value.
expectmodule
pointermodule
vcsmodule
godocmodule
goplsmodule
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
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.
analysisinternal/generated
Package generated defines an analyzer whose result makes it convenient to skip diagnostics within generated files.
Package generated defines an analyzer whose result makes it convenient to skip diagnostics within generated files.
analysisinternal/typeindex
Package typeindex defines an analyzer that provides a golang.org/x/tools/internal/typesinternal/typeindex.Index.
Package typeindex defines an analyzer that provides a golang.org/x/tools/internal/typesinternal/typeindex.Index.
astutil
Package astutil provides various AST utility functions for gopls.
Package astutil provides various AST utility functions for gopls.
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.
drivertest
The drivertest package provides a fake implementation of the go/packages driver protocol that delegates to the go list driver.
The drivertest package provides a fake implementation of the go/packages driver protocol that delegates to the go list driver.
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/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.
expect
Package expect provides support for interpreting structured comments in Go source code (including go.mod and go.work files) as test expectations.
Package expect provides support for interpreting structured comments in Go source code (including go.mod and go.work files) as test expectations.
facts
Package facts defines a serializable set of analysis.Fact.
Package facts defines a serializable set of analysis.Fact.
fmtstr
Package fmtstr defines a parser for format strings as used by fmt.Printf.
Package fmtstr defines a parser for format strings as used by fmt.Printf.
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.
gofix
Package gofix defines an Analyzer that inlines calls to functions and uses of constants marked with a "//go:fix inline" directive.
Package gofix defines an Analyzer that inlines calls to functions and uses of constants marked with a "//go:fix inline" directive.
gofix/cmd/gofixcommand
The gofix command applies the inliner to the specified packages of Go source code.
The gofix command applies the inliner to the specified packages of Go source code.
gofix/findgofix
Package findgofix searches for and validates go:fix directives.
Package findgofix searches for and validates go:fix directives.
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/stack
Package stack provides support for parsing standard goroutine stack traces.
Package stack provides support for parsing standard goroutine stack traces.
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.
mcp
The mcp package provides an SDK for writing model context protocol clients and servers.
The mcp package provides an SDK for writing model context protocol clients and servers.
mcp/internal/oauthex
Package oauthex implements extensions to OAuth2.
Package oauthex implements extensions to OAuth2.
!+
!+
mcp/jsonschema
Package jsonschema is an implementation of the [JSON Schema specification], a JSON-based format for describing the structure of JSON data.
Package jsonschema is an implementation of the [JSON Schema specification], a JSON-based format for describing the structure of JSON data.
modindex
Package modindex contains code for building and searching an Index of the Go module cache.
Package modindex contains code for building and searching an Index of the Go module cache.
modindex/gomodindexcommand
A command for building and maintaining the module cache a.out <flags> <command> <args> The commands are: 'update', which attempts to update an existing index, 'query', which looks up things in the index.
A command for building and maintaining the module cache a.out <flags> <command> <args> The commands are: 'update', which attempts to update an existing index, 'query', which looks up things in the index.
packagesinternal
Package packagesinternal exposes internal-only fields from go/packages.
Package packagesinternal exposes internal-only fields from go/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.
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.
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.
stdlib
Package stdlib provides a table of all exported symbols in the standard library, along with the version at which they first appeared.
Package stdlib provides a table of all exported symbols in the standard library, along with the version at which they first appeared.
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.
testfiles
Package testfiles provides utilities for writing Go tests with files in testdata.
Package testfiles provides utilities for writing Go tests with files in testdata.
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.
typesinternal/typeindex
Package typeindex provides an Index of type information for a package, allowing efficient lookup of, say, whether a given symbol is referenced and, if so, where from; or of the inspector.Cursor for the declaration of a particular types.Object symbol.
Package typeindex provides an Index of type information for a package, allowing efficient lookup of, say, whether a given symbol is referenced and, if so, where from; or of the inspector.Cursor for the declaration of a particular types.Object symbol.
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 a WebSocket-based playground backend.
Package socket implements a 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 obsolete implementation of the deleted golang.org/x/tools/cmd/gorename.
Package rename contains the obsolete implementation of the deleted 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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