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go/internal/lsp/mod/code_lens.go
Rebecca Stambler 3c1b287bbd internal/lsp: await the initial workspace load in ModHandle
ModHandle races with the initial workspace load if the go.mod file does
not yet exist. We should await for the initial workspace load to
complete before proceeding with update codelenses, etc.

Part of trying to figure out the flakes in golang/go#39504.
Also a few staticcheck fixes, and fix the Windows line endings in
fill_struct.go, because `git gofmt` complains.

Change-Id: Ide21a47137390792d1afb924740cff0bb6f0b764
Reviewed-on: https://go-review.googlesource.com/c/tools/+/237419
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-06-12 18:21:55 +00:00

103 lines
2.8 KiB
Go

package mod
import (
"context"
"fmt"
"strings"
"golang.org/x/mod/modfile"
"golang.org/x/tools/internal/event"
"golang.org/x/tools/internal/lsp/debug/tag"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
// CodeLens computes code lens for a go.mod file.
func CodeLens(ctx context.Context, snapshot source.Snapshot, uri span.URI) ([]protocol.CodeLens, error) {
if !snapshot.View().Options().EnabledCodeLens[source.CommandUpgradeDependency] {
return nil, nil
}
realURI, _ := snapshot.View().ModFiles()
if realURI == "" {
return nil, nil
}
// Only get code lens on the go.mod for the view.
if uri != realURI {
return nil, nil
}
ctx, done := event.Start(ctx, "mod.CodeLens", tag.URI.Of(realURI))
defer done()
fh, err := snapshot.GetFile(ctx, realURI)
if err != nil {
return nil, err
}
mh, err := snapshot.ModHandle(ctx, fh)
if err != nil {
return nil, err
}
f, m, upgrades, err := mh.Upgrades(ctx)
if err != nil {
return nil, err
}
var codelens []protocol.CodeLens
var allUpgrades []string
for _, req := range f.Require {
dep := req.Mod.Path
latest, ok := upgrades[dep]
if !ok {
continue
}
// Get the range of the require directive.
rng, err := positionsToRange(uri, m, req.Syntax.Start, req.Syntax.End)
if err != nil {
return nil, err
}
codelens = append(codelens, protocol.CodeLens{
Range: rng,
Command: protocol.Command{
Title: fmt.Sprintf("Upgrade dependency to %s", latest),
Command: source.CommandUpgradeDependency,
Arguments: []interface{}{uri, dep},
},
})
allUpgrades = append(allUpgrades, dep)
}
// If there is at least 1 upgrade, add an "Upgrade all dependencies" to the module statement.
if module := f.Module; len(allUpgrades) > 0 && module != nil && module.Syntax != nil {
// Get the range of the module directive.
rng, err := positionsToRange(uri, m, module.Syntax.Start, module.Syntax.End)
if err != nil {
return nil, err
}
codelens = append(codelens, protocol.CodeLens{
Range: rng,
Command: protocol.Command{
Title: "Upgrade all dependencies",
Command: source.CommandUpgradeDependency,
Arguments: []interface{}{uri, strings.Join(append([]string{"-u"}, allUpgrades...), " ")},
},
})
}
return codelens, err
}
func positionsToRange(uri span.URI, m *protocol.ColumnMapper, s, e modfile.Position) (protocol.Range, error) {
line, col, err := m.Converter.ToPosition(s.Byte)
if err != nil {
return protocol.Range{}, err
}
start := span.NewPoint(line, col, s.Byte)
line, col, err = m.Converter.ToPosition(e.Byte)
if err != nil {
return protocol.Range{}, err
}
end := span.NewPoint(line, col, e.Byte)
rng, err := m.Range(span.New(uri, start, end))
if err != nil {
return protocol.Range{}, err
}
return rng, err
}