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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package source
import (
"context"
"fmt"
"io"
"path/filepath"
"regexp"
"strings"
"sync"
"time"
"golang.org/x/tools/go/analysis"
"golang.org/x/tools/go/analysis/passes/asmdecl"
"golang.org/x/tools/go/analysis/passes/assign"
"golang.org/x/tools/go/analysis/passes/atomic"
"golang.org/x/tools/go/analysis/passes/atomicalign"
"golang.org/x/tools/go/analysis/passes/bools"
"golang.org/x/tools/go/analysis/passes/buildtag"
"golang.org/x/tools/go/analysis/passes/cgocall"
"golang.org/x/tools/go/analysis/passes/composite"
"golang.org/x/tools/go/analysis/passes/copylock"
"golang.org/x/tools/go/analysis/passes/deepequalerrors"
"golang.org/x/tools/go/analysis/passes/errorsas"
"golang.org/x/tools/go/analysis/passes/fieldalignment"
"golang.org/x/tools/go/analysis/passes/httpresponse"
"golang.org/x/tools/go/analysis/passes/ifaceassert"
"golang.org/x/tools/go/analysis/passes/loopclosure"
"golang.org/x/tools/go/analysis/passes/lostcancel"
"golang.org/x/tools/go/analysis/passes/nilfunc"
"golang.org/x/tools/go/analysis/passes/nilness"
"golang.org/x/tools/go/analysis/passes/printf"
"golang.org/x/tools/go/analysis/passes/shadow"
"golang.org/x/tools/go/analysis/passes/shift"
"golang.org/x/tools/go/analysis/passes/sortslice"
"golang.org/x/tools/go/analysis/passes/stdmethods"
"golang.org/x/tools/go/analysis/passes/stringintconv"
"golang.org/x/tools/go/analysis/passes/structtag"
"golang.org/x/tools/go/analysis/passes/testinggoroutine"
"golang.org/x/tools/go/analysis/passes/tests"
"golang.org/x/tools/go/analysis/passes/unmarshal"
"golang.org/x/tools/go/analysis/passes/unreachable"
"golang.org/x/tools/go/analysis/passes/unsafeptr"
"golang.org/x/tools/go/analysis/passes/unusedresult"
"golang.org/x/tools/go/analysis/passes/unusedwrite"
"golang.org/x/tools/internal/lsp/analysis/fillreturns"
"golang.org/x/tools/internal/lsp/analysis/fillstruct"
"golang.org/x/tools/internal/lsp/analysis/infertypeargs"
"golang.org/x/tools/internal/lsp/analysis/nonewvars"
"golang.org/x/tools/internal/lsp/analysis/noresultvalues"
"golang.org/x/tools/internal/lsp/analysis/simplifycompositelit"
"golang.org/x/tools/internal/lsp/analysis/simplifyrange"
"golang.org/x/tools/internal/lsp/analysis/simplifyslice"
"golang.org/x/tools/internal/lsp/analysis/undeclaredname"
"golang.org/x/tools/internal/lsp/analysis/unusedparams"
"golang.org/x/tools/internal/lsp/analysis/useany"
"golang.org/x/tools/internal/lsp/command"
"golang.org/x/tools/internal/lsp/diff"
"golang.org/x/tools/internal/lsp/diff/myers"
"golang.org/x/tools/internal/lsp/protocol"
errors "golang.org/x/xerrors"
)
var (
optionsOnce sync.Once
defaultOptions *Options
)
// DefaultOptions is the options that are used for Gopls execution independent
// of any externally provided configuration (LSP initialization, command
// invocation, etc.).
func DefaultOptions() *Options {
optionsOnce.Do(func() {
var commands []string
for _, c := range command.Commands {
commands = append(commands, c.ID())
}
defaultOptions = &Options{
ClientOptions: ClientOptions{
InsertTextFormat: protocol.PlainTextTextFormat,
PreferredContentFormat: protocol.Markdown,
ConfigurationSupported: true,
DynamicConfigurationSupported: true,
DynamicRegistrationSemanticTokensSupported: true,
DynamicWatchedFilesSupported: true,
LineFoldingOnly: false,
HierarchicalDocumentSymbolSupport: true,
},
ServerOptions: ServerOptions{
SupportedCodeActions: map[FileKind]map[protocol.CodeActionKind]bool{
Go: {
protocol.SourceFixAll: true,
protocol.SourceOrganizeImports: true,
protocol.QuickFix: true,
protocol.RefactorRewrite: true,
protocol.RefactorExtract: true,
},
Mod: {
protocol.SourceOrganizeImports: true,
protocol.QuickFix: true,
},
Sum: {},
Tmpl: {},
},
SupportedCommands: commands,
},
UserOptions: UserOptions{
BuildOptions: BuildOptions{
ExpandWorkspaceToModule: true,
ExperimentalPackageCacheKey: true,
MemoryMode: ModeNormal,
DirectoryFilters: []string{"-node_modules"},
},
UIOptions: UIOptions{
DiagnosticOptions: DiagnosticOptions{
DiagnosticsDelay: 250 * time.Millisecond,
Annotations: map[Annotation]bool{
Bounds: true,
Escape: true,
Inline: true,
Nil: true,
},
},
DocumentationOptions: DocumentationOptions{
HoverKind: FullDocumentation,
LinkTarget: "pkg.go.dev",
LinksInHover: true,
},
NavigationOptions: NavigationOptions{
ImportShortcut: Both,
SymbolMatcher: SymbolFuzzy,
SymbolStyle: DynamicSymbols,
},
CompletionOptions: CompletionOptions{
Matcher: Fuzzy,
CompletionBudget: 100 * time.Millisecond,
ExperimentalPostfixCompletions: true,
},
Codelenses: map[string]bool{
string(command.Generate): true,
string(command.RegenerateCgo): true,
string(command.Tidy): true,
string(command.GCDetails): false,
string(command.UpgradeDependency): true,
string(command.Vendor): true,
},
},
},
InternalOptions: InternalOptions{
LiteralCompletions: true,
TempModfile: true,
CompleteUnimported: true,
CompletionDocumentation: true,
DeepCompletion: true,
},
Hooks: Hooks{
ComputeEdits: myers.ComputeEdits,
URLRegexp: urlRegexp(),
DefaultAnalyzers: defaultAnalyzers(),
TypeErrorAnalyzers: typeErrorAnalyzers(),
ConvenienceAnalyzers: convenienceAnalyzers(),
StaticcheckAnalyzers: map[string]*Analyzer{},
GoDiff: true,
},
}
})
return defaultOptions
}
// Options holds various configuration that affects Gopls execution, organized
// by the nature or origin of the settings.
type Options struct {
ClientOptions
ServerOptions
UserOptions
InternalOptions
Hooks
}
// ClientOptions holds LSP-specific configuration that is provided by the
// client.
type ClientOptions struct {
InsertTextFormat protocol.InsertTextFormat
ConfigurationSupported bool
DynamicConfigurationSupported bool
DynamicRegistrationSemanticTokensSupported bool
DynamicWatchedFilesSupported bool
PreferredContentFormat protocol.MarkupKind
LineFoldingOnly bool
HierarchicalDocumentSymbolSupport bool
SemanticTypes []string
SemanticMods []string
RelatedInformationSupported bool
CompletionTags bool
CompletionDeprecated bool
}
// ServerOptions holds LSP-specific configuration that is provided by the
// server.
type ServerOptions struct {
SupportedCodeActions map[FileKind]map[protocol.CodeActionKind]bool
SupportedCommands []string
}
type BuildOptions struct {
// BuildFlags is the set of flags passed on to the build system when invoked.
// It is applied to queries like `go list`, which is used when discovering files.
// The most common use is to set `-tags`.
BuildFlags []string
// Env adds environment variables to external commands run by `gopls`, most notably `go list`.
Env map[string]string
// DirectoryFilters can be used to exclude unwanted directories from the
// workspace. By default, all directories are included. Filters are an
// operator, `+` to include and `-` to exclude, followed by a path prefix
// relative to the workspace folder. They are evaluated in order, and
// the last filter that applies to a path controls whether it is included.
// The path prefix can be empty, so an initial `-` excludes everything.
//
// Examples:
//
// Exclude node_modules: `-node_modules`
//
// Include only project_a: `-` (exclude everything), `+project_a`
//
// Include only project_a, but not node_modules inside it: `-`, `+project_a`, `-project_a/node_modules`
DirectoryFilters []string
// MemoryMode controls the tradeoff `gopls` makes between memory usage and
// correctness.
//
// Values other than `Normal` are untested and may break in surprising ways.
MemoryMode MemoryMode `status:"experimental"`
// ExpandWorkspaceToModule instructs `gopls` to adjust the scope of the
// workspace to find the best available module root. `gopls` first looks for
// a go.mod file in any parent directory of the workspace folder, expanding
// the scope to that directory if it exists. If no viable parent directory is
// found, gopls will check if there is exactly one child directory containing
// a go.mod file, narrowing the scope to that directory if it exists.
ExpandWorkspaceToModule bool `status:"experimental"`
// ExperimentalWorkspaceModule opts a user into the experimental support
// for multi-module workspaces.
ExperimentalWorkspaceModule bool `status:"experimental"`
// ExperimentalTemplateSupport opts into the experimental support
// for template files.
ExperimentalTemplateSupport bool `status:"experimental"`
// ExperimentalPackageCacheKey controls whether to use a coarser cache key
// for package type information to increase cache hits. This setting removes
// the user's environment, build flags, and working directory from the cache
// key, which should be a safe change as all relevant inputs into the type
// checking pass are already hashed into the key. This is temporarily guarded
// by an experiment because caching behavior is subtle and difficult to
// comprehensively test.
ExperimentalPackageCacheKey bool `status:"experimental"`
// AllowModfileModifications disables -mod=readonly, allowing imports from
// out-of-scope modules. This option will eventually be removed.
AllowModfileModifications bool `status:"experimental"`
// AllowImplicitNetworkAccess disables GOPROXY=off, allowing implicit module
// downloads rather than requiring user action. This option will eventually
// be removed.
AllowImplicitNetworkAccess bool `status:"experimental"`
// ExperimentalUseInvalidMetadata enables gopls to fall back on outdated
// package metadata to provide editor features if the go command fails to
// load packages for some reason (like an invalid go.mod file). This will
// eventually be the default behavior, and this setting will be removed.
ExperimentalUseInvalidMetadata bool `status:"experimental"`
}
type UIOptions struct {
DocumentationOptions
CompletionOptions
NavigationOptions
DiagnosticOptions
// Codelenses overrides the enabled/disabled state of code lenses. See the
// "Code Lenses" section of the
// [Settings page](https://github.com/golang/tools/blob/master/gopls/doc/settings.md)
// for the list of supported lenses.
//
// Example Usage:
//
// ```json5
// "gopls": {
// ...
// "codelenses": {
// "generate": false, // Don't show the `go generate` lens.
// "gc_details": true // Show a code lens toggling the display of gc's choices.
// }
// ...
// }
// ```
Codelenses map[string]bool
// SemanticTokens controls whether the LSP server will send
// semantic tokens to the client.
SemanticTokens bool `status:"experimental"`
}
type CompletionOptions struct {
// Placeholders enables placeholders for function parameters or struct
// fields in completion responses.
UsePlaceholders bool
// CompletionBudget is the soft latency goal for completion requests. Most
// requests finish in a couple milliseconds, but in some cases deep
// completions can take much longer. As we use up our budget we
// dynamically reduce the search scope to ensure we return timely
// results. Zero means unlimited.
CompletionBudget time.Duration `status:"debug"`
// Matcher sets the algorithm that is used when calculating completion
// candidates.
Matcher Matcher `status:"advanced"`
// ExperimentalPostfixCompletions enables artifical method snippets
// such as "someSlice.sort!".
ExperimentalPostfixCompletions bool `status:"experimental"`
}
type DocumentationOptions struct {
// HoverKind controls the information that appears in the hover text.
// SingleLine and Structured are intended for use only by authors of editor plugins.
HoverKind HoverKind
// LinkTarget controls where documentation links go.
// It might be one of:
//
// * `"godoc.org"`
// * `"pkg.go.dev"`
//
// If company chooses to use its own `godoc.org`, its address can be used as well.
LinkTarget string
// LinksInHover toggles the presence of links to documentation in hover.
LinksInHover bool
}
type FormattingOptions struct {
// Local is the equivalent of the `goimports -local` flag, which puts
// imports beginning with this string after third-party packages. It should
// be the prefix of the import path whose imports should be grouped
// separately.
Local string
// Gofumpt indicates if we should run gofumpt formatting.
Gofumpt bool
}
type DiagnosticOptions struct {
// Analyses specify analyses that the user would like to enable or disable.
// A map of the names of analysis passes that should be enabled/disabled.
// A full list of analyzers that gopls uses can be found
// [here](https://github.com/golang/tools/blob/master/gopls/doc/analyzers.md).
//
// Example Usage:
//
// ```json5
// ...
// "analyses": {
// "unreachable": false, // Disable the unreachable analyzer.
// "unusedparams": true // Enable the unusedparams analyzer.
// }
// ...
// ```
Analyses map[string]bool
// Staticcheck enables additional analyses from staticcheck.io.
Staticcheck bool `status:"experimental"`
// Annotations specifies the various kinds of optimization diagnostics
// that should be reported by the gc_details command.
Annotations map[Annotation]bool `status:"experimental"`
// DiagnosticsDelay controls the amount of time that gopls waits
// after the most recent file modification before computing deep diagnostics.
// Simple diagnostics (parsing and type-checking) are always run immediately
// on recently modified packages.
//
// This option must be set to a valid duration string, for example `"250ms"`.
DiagnosticsDelay time.Duration `status:"advanced"`
// ExperimentalWatchedFileDelay controls the amount of time that gopls waits
// for additional workspace/didChangeWatchedFiles notifications to arrive,
// before processing all such notifications in a single batch. This is
// intended for use by LSP clients that don't support their own batching of
// file system notifications.
//
// This option must be set to a valid duration string, for example `"100ms"`.
ExperimentalWatchedFileDelay time.Duration `status:"experimental"`
}
type NavigationOptions struct {
// ImportShortcut specifies whether import statements should link to
// documentation or go to definitions.
ImportShortcut ImportShortcut
// SymbolMatcher sets the algorithm that is used when finding workspace symbols.
SymbolMatcher SymbolMatcher `status:"advanced"`
// SymbolStyle controls how symbols are qualified in symbol responses.
//
// Example Usage:
//
// ```json5
// "gopls": {
// ...
// "symbolStyle": "Dynamic",
// ...
// }
// ```
SymbolStyle SymbolStyle `status:"advanced"`
}
// UserOptions holds custom Gopls configuration (not part of the LSP) that is
// modified by the client.
type UserOptions struct {
BuildOptions
UIOptions
FormattingOptions
// VerboseOutput enables additional debug logging.
VerboseOutput bool `status:"debug"`
}
// EnvSlice returns Env as a slice of k=v strings.
func (u *UserOptions) EnvSlice() []string {
var result []string
for k, v := range u.Env {
result = append(result, fmt.Sprintf("%v=%v", k, v))
}
return result
}
// SetEnvSlice sets Env from a slice of k=v strings.
func (u *UserOptions) SetEnvSlice(env []string) {
u.Env = map[string]string{}
for _, kv := range env {
split := strings.SplitN(kv, "=", 2)
if len(split) != 2 {
continue
}
u.Env[split[0]] = split[1]
}
}
// Hooks contains configuration that is provided to the Gopls command by the
// main package.
type Hooks struct {
LicensesText string
GoDiff bool
ComputeEdits diff.ComputeEdits
URLRegexp *regexp.Regexp
GofumptFormat func(ctx context.Context, src []byte) ([]byte, error)
DefaultAnalyzers map[string]*Analyzer
TypeErrorAnalyzers map[string]*Analyzer
ConvenienceAnalyzers map[string]*Analyzer
StaticcheckAnalyzers map[string]*Analyzer
}
// InternalOptions contains settings that are not intended for use by the
// average user. These may be settings used by tests or outdated settings that
// will soon be deprecated. Some of these settings may not even be configurable
// by the user.
type InternalOptions struct {
// LiteralCompletions controls whether literal candidates such as
// "&someStruct{}" are offered. Tests disable this flag to simplify
// their expected values.
LiteralCompletions bool
// VerboseWorkDoneProgress controls whether the LSP server should send
// progress reports for all work done outside the scope of an RPC.
// Used by the regression tests.
VerboseWorkDoneProgress bool
// The following options were previously available to users, but they
// really shouldn't be configured by anyone other than "power users".
// CompletionDocumentation enables documentation with completion results.
CompletionDocumentation bool
// CompleteUnimported enables completion for packages that you do not
// currently import.
CompleteUnimported bool
// DeepCompletion enables the ability to return completions from deep
// inside relevant entities, rather than just the locally accessible ones.
//
// Consider this example:
//
// ```go
// package main
//
// import "fmt"
//
// type wrapString struct {
// str string
// }
//
// func main() {
// x := wrapString{"hello world"}
// fmt.Printf(<>)
// }
// ```
//
// At the location of the `<>` in this program, deep completion would suggest the result `x.str`.
DeepCompletion bool
// TempModfile controls the use of the -modfile flag in Go 1.14.
TempModfile bool
}
type ImportShortcut string
const (
Both ImportShortcut = "Both"
Link ImportShortcut = "Link"
Definition ImportShortcut = "Definition"
)
func (s ImportShortcut) ShowLinks() bool {
return s == Both || s == Link
}
func (s ImportShortcut) ShowDefinition() bool {
return s == Both || s == Definition
}
type Matcher string
const (
Fuzzy Matcher = "Fuzzy"
CaseInsensitive Matcher = "CaseInsensitive"
CaseSensitive Matcher = "CaseSensitive"
)
type SymbolMatcher string
const (
SymbolFuzzy SymbolMatcher = "Fuzzy"
SymbolFastFuzzy SymbolMatcher = "FastFuzzy"
SymbolCaseInsensitive SymbolMatcher = "CaseInsensitive"
SymbolCaseSensitive SymbolMatcher = "CaseSensitive"
)
type SymbolStyle string
const (
// PackageQualifiedSymbols is package qualified symbols i.e.
// "pkg.Foo.Field".
PackageQualifiedSymbols SymbolStyle = "Package"
// FullyQualifiedSymbols is fully qualified symbols, i.e.
// "path/to/pkg.Foo.Field".
FullyQualifiedSymbols SymbolStyle = "Full"
// DynamicSymbols uses whichever qualifier results in the highest scoring
// match for the given symbol query. Here a "qualifier" is any "/" or "."
// delimited suffix of the fully qualified symbol. i.e. "to/pkg.Foo.Field" or
// just "Foo.Field".
DynamicSymbols SymbolStyle = "Dynamic"
)
type HoverKind string
const (
SingleLine HoverKind = "SingleLine"
NoDocumentation HoverKind = "NoDocumentation"
SynopsisDocumentation HoverKind = "SynopsisDocumentation"
FullDocumentation HoverKind = "FullDocumentation"
// Structured is an experimental setting that returns a structured hover format.
// This format separates the signature from the documentation, so that the client
// can do more manipulation of these fields.
//
// This should only be used by clients that support this behavior.
Structured HoverKind = "Structured"
)
type MemoryMode string
const (
ModeNormal MemoryMode = "Normal"
// In DegradeClosed mode, `gopls` will collect less information about
// packages without open files. As a result, features like Find
// References and Rename will miss results in such packages.
ModeDegradeClosed MemoryMode = "DegradeClosed"
)
type OptionResults []OptionResult
type OptionResult struct {
Name string
Value interface{}
Error error
State OptionState
Replacement string
}
type OptionState int
const (
OptionHandled = OptionState(iota)
OptionDeprecated
OptionUnexpected
)
type LinkTarget string
func SetOptions(options *Options, opts interface{}) OptionResults {
var results OptionResults
switch opts := opts.(type) {
case nil:
case map[string]interface{}:
// If the user's settings contains "allExperiments", set that first,
// and then let them override individual settings independently.
var enableExperiments bool
for name, value := range opts {
if b, ok := value.(bool); name == "allExperiments" && ok && b {
enableExperiments = true
options.EnableAllExperiments()
}
}
seen := map[string]struct{}{}
for name, value := range opts {
results = append(results, options.set(name, value, seen))
}
// Finally, enable any experimental features that are specified in
// maps, which allows users to individually toggle them on or off.
if enableExperiments {
options.enableAllExperimentMaps()
}
default:
results = append(results, OptionResult{
Value: opts,
Error: errors.Errorf("Invalid options type %T", opts),
})
}
return results
}
func (o *Options) ForClientCapabilities(caps protocol.ClientCapabilities) {
// Check if the client supports snippets in completion items.
if c := caps.TextDocument.Completion; c.CompletionItem.SnippetSupport {
o.InsertTextFormat = protocol.SnippetTextFormat
}
// Check if the client supports configuration messages.
o.ConfigurationSupported = caps.Workspace.Configuration
o.DynamicConfigurationSupported = caps.Workspace.DidChangeConfiguration.DynamicRegistration
o.DynamicRegistrationSemanticTokensSupported = caps.TextDocument.SemanticTokens.DynamicRegistration
o.DynamicWatchedFilesSupported = caps.Workspace.DidChangeWatchedFiles.DynamicRegistration
// Check which types of content format are supported by this client.
if hover := caps.TextDocument.Hover; len(hover.ContentFormat) > 0 {
o.PreferredContentFormat = hover.ContentFormat[0]
}
// Check if the client supports only line folding.
fr := caps.TextDocument.FoldingRange
o.LineFoldingOnly = fr.LineFoldingOnly
// Check if the client supports hierarchical document symbols.
o.HierarchicalDocumentSymbolSupport = caps.TextDocument.DocumentSymbol.HierarchicalDocumentSymbolSupport
// Check if the client supports semantic tokens
o.SemanticTypes = caps.TextDocument.SemanticTokens.TokenTypes
o.SemanticMods = caps.TextDocument.SemanticTokens.TokenModifiers
// we don't need Requests, as we support full functionality
// we don't need Formats, as there is only one, for now
// Check if the client supports diagnostic related information.
o.RelatedInformationSupported = caps.TextDocument.PublishDiagnostics.RelatedInformation
// Check if the client completion support incliudes tags (preferred) or deprecation
if caps.TextDocument.Completion.CompletionItem.TagSupport.ValueSet != nil {
o.CompletionTags = true
} else if caps.TextDocument.Completion.CompletionItem.DeprecatedSupport {
o.CompletionDeprecated = true
}
}
func (o *Options) Clone() *Options {
result := &Options{
ClientOptions: o.ClientOptions,
InternalOptions: o.InternalOptions,
Hooks: Hooks{
GoDiff: o.Hooks.GoDiff,
ComputeEdits: o.Hooks.ComputeEdits,
GofumptFormat: o.GofumptFormat,
URLRegexp: o.URLRegexp,
},
ServerOptions: o.ServerOptions,
UserOptions: o.UserOptions,
}
// Fully clone any slice or map fields. Only Hooks, ExperimentalOptions,
// and UserOptions can be modified.
copyStringMap := func(src map[string]bool) map[string]bool {
dst := make(map[string]bool)
for k, v := range src {
dst[k] = v
}
return dst
}
result.Analyses = copyStringMap(o.Analyses)
result.Codelenses = copyStringMap(o.Codelenses)
copySlice := func(src []string) []string {
dst := make([]string, len(src))
copy(dst, src)
return dst
}
result.SetEnvSlice(o.EnvSlice())
result.BuildFlags = copySlice(o.BuildFlags)
result.DirectoryFilters = copySlice(o.DirectoryFilters)
copyAnalyzerMap := func(src map[string]*Analyzer) map[string]*Analyzer {
dst := make(map[string]*Analyzer)
for k, v := range src {
dst[k] = v
}
return dst
}
result.DefaultAnalyzers = copyAnalyzerMap(o.DefaultAnalyzers)
result.TypeErrorAnalyzers = copyAnalyzerMap(o.TypeErrorAnalyzers)
result.ConvenienceAnalyzers = copyAnalyzerMap(o.ConvenienceAnalyzers)
result.StaticcheckAnalyzers = copyAnalyzerMap(o.StaticcheckAnalyzers)
return result
}
func (o *Options) AddStaticcheckAnalyzer(a *analysis.Analyzer, enabled bool, severity protocol.DiagnosticSeverity) {
o.StaticcheckAnalyzers[a.Name] = &Analyzer{
Analyzer: a,
Enabled: enabled,
Severity: severity,
}
}
// EnableAllExperiments turns on all of the experimental "off-by-default"
// features offered by gopls. Any experimental features specified in maps
// should be enabled in enableAllExperimentMaps.
func (o *Options) EnableAllExperiments() {
o.SemanticTokens = true
o.ExperimentalPostfixCompletions = true
o.ExperimentalTemplateSupport = true
o.ExperimentalUseInvalidMetadata = true
o.ExperimentalWatchedFileDelay = 50 * time.Millisecond
}
func (o *Options) enableAllExperimentMaps() {
if _, ok := o.Codelenses[string(command.GCDetails)]; !ok {
o.Codelenses[string(command.GCDetails)] = true
}
if _, ok := o.Analyses[unusedparams.Analyzer.Name]; !ok {
o.Analyses[unusedparams.Analyzer.Name] = true
}
}
func (o *Options) set(name string, value interface{}, seen map[string]struct{}) OptionResult {
// Flatten the name in case we get options with a hierarchy.
split := strings.Split(name, ".")
name = split[len(split)-1]
result := OptionResult{Name: name, Value: value}
if _, ok := seen[name]; ok {
result.errorf("duplicate configuration for %s", name)
}
seen[name] = struct{}{}
switch name {
case "env":
menv, ok := value.(map[string]interface{})
if !ok {
result.errorf("invalid type %T, expect map", value)
break
}
if o.Env == nil {
o.Env = make(map[string]string)
}
for k, v := range menv {
o.Env[k] = fmt.Sprint(v)
}
case "buildFlags":
iflags, ok := value.([]interface{})
if !ok {
result.errorf("invalid type %T, expect list", value)
break
}
flags := make([]string, 0, len(iflags))
for _, flag := range iflags {
flags = append(flags, fmt.Sprintf("%s", flag))
}
o.BuildFlags = flags
case "directoryFilters":
ifilters, ok := value.([]interface{})
if !ok {
result.errorf("invalid type %T, expect list", value)
break
}
var filters []string
for _, ifilter := range ifilters {
filter := fmt.Sprint(ifilter)
if filter[0] != '+' && filter[0] != '-' {
result.errorf("invalid filter %q, must start with + or -", filter)
return result
}
filters = append(filters, strings.TrimRight(filepath.FromSlash(filter), "/"))
}
o.DirectoryFilters = filters
case "memoryMode":
if s, ok := result.asOneOf(
string(ModeNormal),
string(ModeDegradeClosed),
); ok {
o.MemoryMode = MemoryMode(s)
}
case "completionDocumentation":
result.setBool(&o.CompletionDocumentation)
case "usePlaceholders":
result.setBool(&o.UsePlaceholders)
case "deepCompletion":
result.setBool(&o.DeepCompletion)
case "completeUnimported":
result.setBool(&o.CompleteUnimported)
case "completionBudget":
result.setDuration(&o.CompletionBudget)
case "matcher":
if s, ok := result.asOneOf(
string(Fuzzy),
string(CaseSensitive),
string(CaseInsensitive),
); ok {
o.Matcher = Matcher(s)
}
case "symbolMatcher":
if s, ok := result.asOneOf(
string(SymbolFuzzy),
string(SymbolFastFuzzy),
string(SymbolCaseInsensitive),
string(SymbolCaseSensitive),
); ok {
o.SymbolMatcher = SymbolMatcher(s)
}
case "symbolStyle":
if s, ok := result.asOneOf(
string(FullyQualifiedSymbols),
string(PackageQualifiedSymbols),
string(DynamicSymbols),
); ok {
o.SymbolStyle = SymbolStyle(s)
}
case "hoverKind":
if s, ok := result.asOneOf(
string(NoDocumentation),
string(SingleLine),
string(SynopsisDocumentation),
string(FullDocumentation),
string(Structured),
); ok {
o.HoverKind = HoverKind(s)
}
case "linkTarget":
result.setString(&o.LinkTarget)
case "linksInHover":
result.setBool(&o.LinksInHover)
case "importShortcut":
if s, ok := result.asOneOf(string(Both), string(Link), string(Definition)); ok {
o.ImportShortcut = ImportShortcut(s)
}
case "analyses":
result.setBoolMap(&o.Analyses)
case "annotations":
result.setAnnotationMap(&o.Annotations)
case "codelenses", "codelens":
var lensOverrides map[string]bool
result.setBoolMap(&lensOverrides)
if result.Error == nil {
if o.Codelenses == nil {
o.Codelenses = make(map[string]bool)
}
for lens, enabled := range lensOverrides {
o.Codelenses[lens] = enabled
}
}
// codelens is deprecated, but still works for now.
// TODO(rstambler): Remove this for the gopls/v0.7.0 release.
if name == "codelens" {
result.State = OptionDeprecated
result.Replacement = "codelenses"
}
case "staticcheck":
result.setBool(&o.Staticcheck)
case "local":
result.setString(&o.Local)
case "verboseOutput":
result.setBool(&o.VerboseOutput)
case "verboseWorkDoneProgress":
result.setBool(&o.VerboseWorkDoneProgress)
case "tempModfile":
result.setBool(&o.TempModfile)
case "gofumpt":
result.setBool(&o.Gofumpt)
case "semanticTokens":
result.setBool(&o.SemanticTokens)
case "expandWorkspaceToModule":
result.setBool(&o.ExpandWorkspaceToModule)
case "experimentalPostfixCompletions":
result.setBool(&o.ExperimentalPostfixCompletions)
case "experimentalWorkspaceModule":
result.setBool(&o.ExperimentalWorkspaceModule)
case "experimentalTemplateSupport":
result.setBool(&o.ExperimentalTemplateSupport)
case "experimentalDiagnosticsDelay", "diagnosticsDelay":
if name == "experimentalDiagnosticsDelay" {
result.State = OptionDeprecated
result.Replacement = "diagnosticsDelay"
}
result.setDuration(&o.DiagnosticsDelay)
case "experimentalWatchedFileDelay":
result.setDuration(&o.ExperimentalWatchedFileDelay)
case "experimentalPackageCacheKey":
result.setBool(&o.ExperimentalPackageCacheKey)
case "allowModfileModifications":
result.setBool(&o.AllowModfileModifications)
case "allowImplicitNetworkAccess":
result.setBool(&o.AllowImplicitNetworkAccess)
case "experimentalUseInvalidMetadata":
result.setBool(&o.ExperimentalUseInvalidMetadata)
case "allExperiments":
// This setting should be handled before all of the other options are
// processed, so do nothing here.
// Replaced settings.
case "experimentalDisabledAnalyses":
result.State = OptionDeprecated
result.Replacement = "analyses"
case "disableDeepCompletion":
result.State = OptionDeprecated
result.Replacement = "deepCompletion"
case "disableFuzzyMatching":
result.State = OptionDeprecated
result.Replacement = "fuzzyMatching"
case "wantCompletionDocumentation":
result.State = OptionDeprecated
result.Replacement = "completionDocumentation"
case "wantUnimportedCompletions":
result.State = OptionDeprecated
result.Replacement = "completeUnimported"
case "fuzzyMatching":
result.State = OptionDeprecated
result.Replacement = "matcher"
case "caseSensitiveCompletion":
result.State = OptionDeprecated
result.Replacement = "matcher"
// Deprecated settings.
case "wantSuggestedFixes":
result.State = OptionDeprecated
case "noIncrementalSync":
result.State = OptionDeprecated
case "watchFileChanges":
result.State = OptionDeprecated
case "go-diff":
result.State = OptionDeprecated
default:
result.State = OptionUnexpected
}
return result
}
func (r *OptionResult) errorf(msg string, values ...interface{}) {
prefix := fmt.Sprintf("parsing setting %q: ", r.Name)
r.Error = errors.Errorf(prefix+msg, values...)
}
func (r *OptionResult) asBool() (bool, bool) {
b, ok := r.Value.(bool)
if !ok {
r.errorf("invalid type %T, expect bool", r.Value)
return false, false
}
return b, true
}
func (r *OptionResult) setBool(b *bool) {
if v, ok := r.asBool(); ok {
*b = v
}
}
func (r *OptionResult) setDuration(d *time.Duration) {
if v, ok := r.asString(); ok {
parsed, err := time.ParseDuration(v)
if err != nil {
r.errorf("failed to parse duration %q: %v", v, err)
return
}
*d = parsed
}
}
func (r *OptionResult) setBoolMap(bm *map[string]bool) {
m := r.asBoolMap()
*bm = m
}
func (r *OptionResult) setAnnotationMap(bm *map[Annotation]bool) {
all := r.asBoolMap()
if all == nil {
return
}
// Default to everything enabled by default.
m := make(map[Annotation]bool)
for k, enabled := range all {
a, err := asOneOf(
k,
string(Nil),
string(Escape),
string(Inline),
string(Bounds),
)
if err != nil {
// In case of an error, process any legacy values.
switch k {
case "noEscape":
m[Escape] = false
r.errorf(`"noEscape" is deprecated, set "Escape: false" instead`)
case "noNilcheck":
m[Nil] = false
r.errorf(`"noNilcheck" is deprecated, set "Nil: false" instead`)
case "noInline":
m[Inline] = false
r.errorf(`"noInline" is deprecated, set "Inline: false" instead`)
case "noBounds":
m[Bounds] = false
r.errorf(`"noBounds" is deprecated, set "Bounds: false" instead`)
default:
r.errorf(err.Error())
}
continue
}
m[Annotation(a)] = enabled
}
*bm = m
}
func (r *OptionResult) asBoolMap() map[string]bool {
all, ok := r.Value.(map[string]interface{})
if !ok {
r.errorf("invalid type %T for map[string]bool option", r.Value)
return nil
}
m := make(map[string]bool)
for a, enabled := range all {
if enabled, ok := enabled.(bool); ok {
m[a] = enabled
} else {
r.errorf("invalid type %T for map key %q", enabled, a)
return m
}
}
return m
}
func (r *OptionResult) asString() (string, bool) {
b, ok := r.Value.(string)
if !ok {
r.errorf("invalid type %T, expect string", r.Value)
return "", false
}
return b, true
}
func (r *OptionResult) asOneOf(options ...string) (string, bool) {
s, ok := r.asString()
if !ok {
return "", false
}
s, err := asOneOf(s, options...)
if err != nil {
r.errorf(err.Error())
}
return s, err == nil
}
func asOneOf(str string, options ...string) (string, error) {
lower := strings.ToLower(str)
for _, opt := range options {
if strings.ToLower(opt) == lower {
return opt, nil
}
}
return "", fmt.Errorf("invalid option %q for enum", str)
}
func (r *OptionResult) setString(s *string) {
if v, ok := r.asString(); ok {
*s = v
}
}
// EnabledAnalyzers returns all of the analyzers enabled for the given
// snapshot.
func EnabledAnalyzers(snapshot Snapshot) (analyzers []*Analyzer) {
for _, a := range snapshot.View().Options().DefaultAnalyzers {
if a.IsEnabled(snapshot.View()) {
analyzers = append(analyzers, a)
}
}
for _, a := range snapshot.View().Options().TypeErrorAnalyzers {
if a.IsEnabled(snapshot.View()) {
analyzers = append(analyzers, a)
}
}
for _, a := range snapshot.View().Options().ConvenienceAnalyzers {
if a.IsEnabled(snapshot.View()) {
analyzers = append(analyzers, a)
}
}
for _, a := range snapshot.View().Options().StaticcheckAnalyzers {
if a.IsEnabled(snapshot.View()) {
analyzers = append(analyzers, a)
}
}
return analyzers
}
func typeErrorAnalyzers() map[string]*Analyzer {
return map[string]*Analyzer{
fillreturns.Analyzer.Name: {
Analyzer: fillreturns.Analyzer,
ActionKind: []protocol.CodeActionKind{protocol.SourceFixAll, protocol.QuickFix},
Enabled: true,
},
nonewvars.Analyzer.Name: {
Analyzer: nonewvars.Analyzer,
Enabled: true,
},
noresultvalues.Analyzer.Name: {
Analyzer: noresultvalues.Analyzer,
Enabled: true,
},
undeclaredname.Analyzer.Name: {
Analyzer: undeclaredname.Analyzer,
Fix: UndeclaredName,
Enabled: true,
},
}
}
func convenienceAnalyzers() map[string]*Analyzer {
return map[string]*Analyzer{
fillstruct.Analyzer.Name: {
Analyzer: fillstruct.Analyzer,
Fix: FillStruct,
Enabled: true,
ActionKind: []protocol.CodeActionKind{protocol.RefactorRewrite},
},
}
}
func defaultAnalyzers() map[string]*Analyzer {
return map[string]*Analyzer{
// The traditional vet suite:
asmdecl.Analyzer.Name: {Analyzer: asmdecl.Analyzer, Enabled: true},
assign.Analyzer.Name: {Analyzer: assign.Analyzer, Enabled: true},
atomic.Analyzer.Name: {Analyzer: atomic.Analyzer, Enabled: true},
bools.Analyzer.Name: {Analyzer: bools.Analyzer, Enabled: true},
buildtag.Analyzer.Name: {Analyzer: buildtag.Analyzer, Enabled: true},
cgocall.Analyzer.Name: {Analyzer: cgocall.Analyzer, Enabled: true},
composite.Analyzer.Name: {Analyzer: composite.Analyzer, Enabled: true},
copylock.Analyzer.Name: {Analyzer: copylock.Analyzer, Enabled: true},
errorsas.Analyzer.Name: {Analyzer: errorsas.Analyzer, Enabled: true},
httpresponse.Analyzer.Name: {Analyzer: httpresponse.Analyzer, Enabled: true},
ifaceassert.Analyzer.Name: {Analyzer: ifaceassert.Analyzer, Enabled: true},
loopclosure.Analyzer.Name: {Analyzer: loopclosure.Analyzer, Enabled: true},
lostcancel.Analyzer.Name: {Analyzer: lostcancel.Analyzer, Enabled: true},
nilfunc.Analyzer.Name: {Analyzer: nilfunc.Analyzer, Enabled: true},
printf.Analyzer.Name: {Analyzer: printf.Analyzer, Enabled: true},
shift.Analyzer.Name: {Analyzer: shift.Analyzer, Enabled: true},
stdmethods.Analyzer.Name: {Analyzer: stdmethods.Analyzer, Enabled: true},
stringintconv.Analyzer.Name: {Analyzer: stringintconv.Analyzer, Enabled: true},
structtag.Analyzer.Name: {Analyzer: structtag.Analyzer, Enabled: true},
tests.Analyzer.Name: {Analyzer: tests.Analyzer, Enabled: true},
unmarshal.Analyzer.Name: {Analyzer: unmarshal.Analyzer, Enabled: true},
unreachable.Analyzer.Name: {Analyzer: unreachable.Analyzer, Enabled: true},
unsafeptr.Analyzer.Name: {Analyzer: unsafeptr.Analyzer, Enabled: true},
unusedresult.Analyzer.Name: {Analyzer: unusedresult.Analyzer, Enabled: true},
// Non-vet analyzers:
atomicalign.Analyzer.Name: {Analyzer: atomicalign.Analyzer, Enabled: true},
deepequalerrors.Analyzer.Name: {Analyzer: deepequalerrors.Analyzer, Enabled: true},
fieldalignment.Analyzer.Name: {Analyzer: fieldalignment.Analyzer, Enabled: false},
nilness.Analyzer.Name: {Analyzer: nilness.Analyzer, Enabled: false},
shadow.Analyzer.Name: {Analyzer: shadow.Analyzer, Enabled: false},
sortslice.Analyzer.Name: {Analyzer: sortslice.Analyzer, Enabled: true},
testinggoroutine.Analyzer.Name: {Analyzer: testinggoroutine.Analyzer, Enabled: true},
unusedparams.Analyzer.Name: {Analyzer: unusedparams.Analyzer, Enabled: false},
unusedwrite.Analyzer.Name: {Analyzer: unusedwrite.Analyzer, Enabled: false},
useany.Analyzer.Name: {Analyzer: useany.Analyzer, Enabled: true},
infertypeargs.Analyzer.Name: {Analyzer: infertypeargs.Analyzer, Enabled: true},
// gofmt -s suite:
simplifycompositelit.Analyzer.Name: {
Analyzer: simplifycompositelit.Analyzer,
Enabled: true,
ActionKind: []protocol.CodeActionKind{protocol.SourceFixAll, protocol.QuickFix},
},
simplifyrange.Analyzer.Name: {
Analyzer: simplifyrange.Analyzer,
Enabled: true,
ActionKind: []protocol.CodeActionKind{protocol.SourceFixAll, protocol.QuickFix},
},
simplifyslice.Analyzer.Name: {
Analyzer: simplifyslice.Analyzer,
Enabled: true,
ActionKind: []protocol.CodeActionKind{protocol.SourceFixAll, protocol.QuickFix},
},
}
}
func urlRegexp() *regexp.Regexp {
// Ensure links are matched as full words, not anywhere.
re := regexp.MustCompile(`\b(http|ftp|https)://([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?\b`)
re.Longest()
return re
}
type APIJSON struct {
Options map[string][]*OptionJSON
Commands []*CommandJSON
Lenses []*LensJSON
Analyzers []*AnalyzerJSON
}
type OptionJSON struct {
Name string
Type string
Doc string
EnumKeys EnumKeys
EnumValues []EnumValue
Default string
Status string
Hierarchy string
}
func (o *OptionJSON) String() string {
return o.Name
}
func (o *OptionJSON) Write(w io.Writer) {
fmt.Fprintf(w, "**%v** *%v*\n\n", o.Name, o.Type)
writeStatus(w, o.Status)
enumValues := collectEnums(o)
fmt.Fprintf(w, "%v%v\nDefault: `%v`.\n\n", o.Doc, enumValues, o.Default)
}
func writeStatus(section io.Writer, status string) {
switch status {
case "":
case "advanced":
fmt.Fprint(section, "**This is an advanced setting and should not be configured by most `gopls` users.**\n\n")
case "debug":
fmt.Fprint(section, "**This setting is for debugging purposes only.**\n\n")
case "experimental":
fmt.Fprint(section, "**This setting is experimental and may be deleted.**\n\n")
default:
fmt.Fprintf(section, "**Status: %s.**\n\n", status)
}
}
var parBreakRE = regexp.MustCompile("\n{2,}")
func collectEnums(opt *OptionJSON) string {
var b strings.Builder
write := func(name, doc string, index, len int) {
if doc != "" {
unbroken := parBreakRE.ReplaceAllString(doc, "\\\n")
fmt.Fprintf(&b, "* %s", unbroken)
} else {
fmt.Fprintf(&b, "* `%s`", name)
}
if index < len-1 {
fmt.Fprint(&b, "\n")
}
}
if len(opt.EnumValues) > 0 && opt.Type == "enum" {
b.WriteString("\nMust be one of:\n\n")
for i, val := range opt.EnumValues {
write(val.Value, val.Doc, i, len(opt.EnumValues))
}
} else if len(opt.EnumKeys.Keys) > 0 && shouldShowEnumKeysInSettings(opt.Name) {
b.WriteString("\nCan contain any of:\n\n")
for i, val := range opt.EnumKeys.Keys {
write(val.Name, val.Doc, i, len(opt.EnumKeys.Keys))
}
}
return b.String()
}
func shouldShowEnumKeysInSettings(name string) bool {
// Both of these fields have too many possible options to print.
return !hardcodedEnumKeys(name)
}
func hardcodedEnumKeys(name string) bool {
return name == "analyses" || name == "codelenses"
}
type EnumKeys struct {
ValueType string
Keys []EnumKey
}
type EnumKey struct {
Name string
Doc string
Default string
}
type EnumValue struct {
Value string
Doc string
}
type CommandJSON struct {
Command string
Title string
Doc string
ArgDoc string
ResultDoc string
}
func (c *CommandJSON) String() string {
return c.Command
}
func (c *CommandJSON) Write(w io.Writer) {
fmt.Fprintf(w, "### **%v**\nIdentifier: `%v`\n\n%v\n\n", c.Title, c.Command, c.Doc)
if c.ArgDoc != "" {
fmt.Fprintf(w, "Args:\n\n```\n%s\n```\n\n", c.ArgDoc)
}
if c.ResultDoc != "" {
fmt.Fprintf(w, "Result:\n\n```\n%s\n```\n\n", c.ResultDoc)
}
}
type LensJSON struct {
Lens string
Title string
Doc string
}
func (l *LensJSON) String() string {
return l.Title
}
func (l *LensJSON) Write(w io.Writer) {
fmt.Fprintf(w, "%s (%s): %s", l.Title, l.Lens, l.Doc)
}
type AnalyzerJSON struct {
Name string
Doc string
Default bool
}
func (a *AnalyzerJSON) String() string {
return a.Name
}
func (a *AnalyzerJSON) Write(w io.Writer) {
fmt.Fprintf(w, "%s (%s): %v", a.Name, a.Doc, a.Default)
}