x/tools/gopls: requests fail with type errors

[Lis2T]

What version of Go are you using (go version)?

$ go version
go version go1.13.5 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/yuki/Library/Caches/go-build"
GOENV="/Users/yuki/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/yuki/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/Cellar/go/1.13.5/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.13.5/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/yuki/Documents/GitHub/go_interpreter/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/sk/tgf7xxtj0534t8wwr4h0g0sc0000gn/T/go-build223359251=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Run Vscode with the latest vscode-go extension and gopls language server on.

I opened random go file, gopls logs:

[Error - 12:13:36 AM] Request textDocument/codeAction failed.
  Message: /Users/yuki/Documents/GitHub/go_interpreter/hello.go:14:1: expected declaration, found Pri
  Code: 0 

And autosuggest is broken too.

Similar Case#31492
I create .code-workspace file, but still does not work.

{
  "folders": [
    {
      "path": "/Users/yuki/Documents/GitHub/go_interpreter"
    }
  ],

What did you expect to see?

gopls works with vscode.

What did you see instead?

Request textDocument/* failed.

[gopherbot]

Thank you for filing a gopls issue! Please take a look at the Troubleshooting guide, and make sure that you have provided all of the relevant information here.

[muirdm]

Currently you have a syntax error which gopls is reporting: expected declaration, found Pri. What do you expect "Pri" to complete to?

Only func/var/type/const declarations are valid at the file level. gopls in general does not work well when faced with syntax errors.

[Lis2T]

Currently you have a syntax error which gopls is reporting: expected declaration, found Pri. What do you expect "Pri" to complete to?

Only func/var/type/const declarations are valid at the file level. gopls in general does not work well when faced with syntax errors.

Thanks for replying, This is just one example.

gopls doesn't work yet. For example, I have enabled completeUnimported, but the predictions show different ones.

This is my settings.json.
I enabled the language server.

[muirdm]

Completions don't work at the top level of the file. Try completing inside a function.

[Lis2T]

Completions don't work at the top level of the file. Try completing inside a function.

Thanks! I was a misunderstanding gopls working.