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https://github.com/golang/go
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f270e23f6a
This is the first step to surfacing potential fixes and suggestions to a user's go.mod file. Specifically, it will show a warning if you have a dependency that is not used, or if a dependency is declared as indirect when it should be direct and vice versa. This CL adds functionality for version of Go that are >= 1.14. Updates golang/go#31999 Change-Id: Id60fa0ee201dcd843f62e2659dda8e795bd671db Reviewed-on: https://go-review.googlesource.com/c/tools/+/211937 Run-TryBot: Rohan Challa <rohan@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cache
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import (
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"context"
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"golang.org/x/mod/modfile"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/lsp/telemetry"
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"golang.org/x/tools/internal/memoize"
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"golang.org/x/tools/internal/telemetry/trace"
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errors "golang.org/x/xerrors"
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)
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type parseModHandle struct {
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handle *memoize.Handle
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file source.FileHandle
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}
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type parseModData struct {
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memoize.NoCopy
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modfile *modfile.File
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err error
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}
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func (c *cache) ParseModHandle(fh source.FileHandle) source.ParseModHandle {
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h := c.store.Bind(fh.Identity(), func(ctx context.Context) interface{} {
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data := &parseModData{}
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data.modfile, data.err = parseMod(ctx, fh)
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return data
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})
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return &parseModHandle{
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handle: h,
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file: fh,
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}
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}
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func parseMod(ctx context.Context, fh source.FileHandle) (modifle *modfile.File, err error) {
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ctx, done := trace.StartSpan(ctx, "cache.parseMod", telemetry.File.Of(fh.Identity().URI.Filename()))
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defer done()
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buf, _, err := fh.Read(ctx)
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if err != nil {
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return nil, err
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}
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f, err := modfile.Parse(fh.Identity().URI.Filename(), buf, nil)
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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func (pgh *parseModHandle) String() string {
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return pgh.File().Identity().URI.Filename()
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}
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func (pgh *parseModHandle) File() source.FileHandle {
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return pgh.file
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}
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func (pgh *parseModHandle) Parse(ctx context.Context) (*modfile.File, error) {
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v := pgh.handle.Get(ctx)
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if v == nil {
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return nil, errors.Errorf("no parsed file for %s", pgh.File().Identity().URI)
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}
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data := v.(*parseModData)
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return data.modfile, data.err
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}
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