blob: e515adae1044c6c81c3818cbf8519eed2e4fb72f [file] [log] [blame]
// 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 mod provides core features related to go.mod file
// handling for use by Go editors and tools.
package mod
import (
"context"
"fmt"
"golang.org/x/tools/internal/event"
"golang.org/x/tools/internal/lsp/command"
"golang.org/x/tools/internal/lsp/debug/tag"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
)
func Diagnostics(ctx context.Context, snapshot source.Snapshot) (map[source.VersionedFileIdentity][]*source.Diagnostic, error) {
ctx, done := event.Start(ctx, "mod.Diagnostics", tag.Snapshot.Of(snapshot.ID()))
defer done()
reports := map[source.VersionedFileIdentity][]*source.Diagnostic{}
for _, uri := range snapshot.ModFiles() {
fh, err := snapshot.GetVersionedFile(ctx, uri)
if err != nil {
return nil, err
}
reports[fh.VersionedFileIdentity()] = []*source.Diagnostic{}
diagnostics, err := DiagnosticsForMod(ctx, snapshot, fh)
if err != nil {
return nil, err
}
for _, d := range diagnostics {
fh, err := snapshot.GetVersionedFile(ctx, d.URI)
if err != nil {
return nil, err
}
reports[fh.VersionedFileIdentity()] = append(reports[fh.VersionedFileIdentity()], d)
}
}
return reports, nil
}
func DiagnosticsForMod(ctx context.Context, snapshot source.Snapshot, fh source.FileHandle) ([]*source.Diagnostic, error) {
pm, err := snapshot.ParseMod(ctx, fh)
if err != nil {
if pm == nil || len(pm.ParseErrors) == 0 {
return nil, err
}
return pm.ParseErrors, nil
}
var diagnostics []*source.Diagnostic
// Add upgrade quick fixes for individual modules if we know about them.
upgrades := snapshot.View().ModuleUpgrades()
for _, req := range pm.File.Require {
ver, ok := upgrades[req.Mod.Path]
if !ok || req.Mod.Version == ver {
continue
}
rng, err := lineToRange(pm.Mapper, fh.URI(), req.Syntax.Start, req.Syntax.End)
if err != nil {
return nil, err
}
// Upgrade to the exact version we offer the user, not the most recent.
title := fmt.Sprintf("Upgrade to %v", ver)
cmd, err := command.NewUpgradeDependencyCommand(title, command.DependencyArgs{
URI: protocol.URIFromSpanURI(fh.URI()),
AddRequire: false,
GoCmdArgs: []string{req.Mod.Path + "@" + ver},
})
if err != nil {
return nil, err
}
diagnostics = append(diagnostics, &source.Diagnostic{
URI: fh.URI(),
Range: rng,
Severity: protocol.SeverityInformation,
Source: source.UpgradeNotification,
Message: fmt.Sprintf("%v can be upgraded", req.Mod.Path),
SuggestedFixes: []source.SuggestedFix{source.SuggestedFixFromCommand(cmd)},
})
}
// Packages in the workspace can contribute diagnostics to go.mod files.
wspkgs, err := snapshot.WorkspacePackages(ctx)
if err != nil && !source.IsNonFatalGoModError(err) {
event.Error(ctx, "diagnosing go.mod", err)
}
if err == nil {
for _, pkg := range wspkgs {
for _, diag := range pkg.GetDiagnostics() {
if diag.URI == fh.URI() {
diagnostics = append(diagnostics, diag)
}
}
}
}
tidied, err := snapshot.ModTidy(ctx, pm)
if err != nil && !source.IsNonFatalGoModError(err) {
event.Error(ctx, "diagnosing go.mod", err)
}
if err == nil {
for _, d := range tidied.Diagnostics {
if d.URI != fh.URI() {
continue
}
diagnostics = append(diagnostics, d)
}
}
return diagnostics, nil
}