.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.1.1-0.20210319172145-bda8f5cee399/internal/lsp/mod/diagnostics.go

   1 // Copyright 2019 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Package mod provides core features related to go.mod file
   6 // handling for use by Go editors and tools.
   7 package mod
   8
   9 import (
  10         "context"
  11         "fmt"
  12
  13         "golang.org/x/tools/internal/event"
  14         "golang.org/x/tools/internal/lsp/command"
  15         "golang.org/x/tools/internal/lsp/debug/tag"
  16         "golang.org/x/tools/internal/lsp/protocol"
  17         "golang.org/x/tools/internal/lsp/source"
  18 )
  19
  20 func Diagnostics(ctx context.Context, snapshot source.Snapshot) (map[source.VersionedFileIdentity][]*source.Diagnostic, error) {
  21         ctx, done := event.Start(ctx, "mod.Diagnostics", tag.Snapshot.Of(snapshot.ID()))
  22         defer done()
  23
  24         reports := map[source.VersionedFileIdentity][]*source.Diagnostic{}
  25         for _, uri := range snapshot.ModFiles() {
  26                 fh, err := snapshot.GetVersionedFile(ctx, uri)
  27                 if err != nil {
  28                         return nil, err
  29                 }
  30                 reports[fh.VersionedFileIdentity()] = []*source.Diagnostic{}
  31                 diagnostics, err := DiagnosticsForMod(ctx, snapshot, fh)
  32                 if err != nil {
  33                         return nil, err
  34                 }
  35                 for _, d := range diagnostics {
  36                         fh, err := snapshot.GetVersionedFile(ctx, d.URI)
  37                         if err != nil {
  38                                 return nil, err
  39                         }
  40                         reports[fh.VersionedFileIdentity()] = append(reports[fh.VersionedFileIdentity()], d)
  41                 }
  42         }
  43         return reports, nil
  44 }
  45
  46 func DiagnosticsForMod(ctx context.Context, snapshot source.Snapshot, fh source.FileHandle) ([]*source.Diagnostic, error) {
  47         pm, err := snapshot.ParseMod(ctx, fh)
  48         if err != nil {
  49                 if pm == nil || len(pm.ParseErrors) == 0 {
  50                         return nil, err
  51                 }
  52                 return pm.ParseErrors, nil
  53         }
  54
  55         var diagnostics []*source.Diagnostic
  56
  57         // Add upgrade quick fixes for individual modules if we know about them.
  58         upgrades := snapshot.View().ModuleUpgrades()
  59         for _, req := range pm.File.Require {
  60                 ver, ok := upgrades[req.Mod.Path]
  61                 if !ok || req.Mod.Version == ver {
  62                         continue
  63                 }
  64                 rng, err := lineToRange(pm.Mapper, fh.URI(), req.Syntax.Start, req.Syntax.End)
  65                 if err != nil {
  66                         return nil, err
  67                 }
  68                 // Upgrade to the exact version we offer the user, not the most recent.
  69                 title := fmt.Sprintf("Upgrade to %v", ver)
  70                 cmd, err := command.NewUpgradeDependencyCommand(title, command.DependencyArgs{
  71                         URI:        protocol.URIFromSpanURI(fh.URI()),
  72                         AddRequire: false,
  73                         GoCmdArgs:  []string{req.Mod.Path + "@" + ver},
  74                 })
  75                 if err != nil {
  76                         return nil, err
  77                 }
  78                 diagnostics = append(diagnostics, &source.Diagnostic{
  79                         URI:            fh.URI(),
  80                         Range:          rng,
  81                         Severity:       protocol.SeverityInformation,
  82                         Source:         source.UpgradeNotification,
  83                         Message:        fmt.Sprintf("%v can be upgraded", req.Mod.Path),
  84                         SuggestedFixes: []source.SuggestedFix{source.SuggestedFixFromCommand(cmd)},
  85                 })
  86         }
  87
  88         // Packages in the workspace can contribute diagnostics to go.mod files.
  89         wspkgs, err := snapshot.WorkspacePackages(ctx)
  90         if err != nil && !source.IsNonFatalGoModError(err) {
  91                 event.Error(ctx, "diagnosing go.mod", err)
  92         }
  93         if err == nil {
  94                 for _, pkg := range wspkgs {
  95                         pkgDiagnostics, err := snapshot.DiagnosePackage(ctx, pkg)
  96                         if err != nil {
  97                                 return nil, err
  98                         }
  99                         diagnostics = append(diagnostics, pkgDiagnostics[fh.URI()]...)
 100                 }
 101         }
 102
 103         tidied, err := snapshot.ModTidy(ctx, pm)
 104         if err != nil && !source.IsNonFatalGoModError(err) {
 105                 event.Error(ctx, "diagnosing go.mod", err)
 106         }
 107         if err == nil {
 108                 for _, d := range tidied.Diagnostics {
 109                         if d.URI != fh.URI() {
 110                                 continue
 111                         }
 112                         diagnostics = append(diagnostics, d)
 113                 }
 114         }
 115         return diagnostics, nil
 116 }