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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
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| package goputil | ||
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| type Kind int | ||
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| const ( | ||
| FileUnknown Kind = iota | ||
| FileGopNormal | ||
| FileGopClass | ||
| ) | ||
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| func FileKind(fext string) Kind { | ||
| switch fext { | ||
| case ".gop": | ||
| return FileGopNormal | ||
| case ".spx", ".rdx", ".gox", ".gmx": | ||
| return FileGopClass | ||
| } | ||
| return FileUnknown | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
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| package lsp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
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| package lsp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package lsp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package lsp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package lsp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| // Copyright 2023 The GoPlus Authors (goplus.org). All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
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| package source | ||
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "path/filepath" | ||
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| "github.com/goplus/gop/format" | ||
| "golang.org/x/tools/gopls/internal/goxls/goputil" | ||
| "golang.org/x/tools/gopls/internal/lsp/protocol" | ||
| "golang.org/x/tools/internal/event" | ||
| "golang.org/x/tools/internal/tokeninternal" | ||
| ) | ||
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| // FormatGop formats a file with a given range. | ||
| func FormatGop(ctx context.Context, snapshot Snapshot, fh FileHandle) ([]protocol.TextEdit, error) { | ||
| ctx, done := event.Start(ctx, "gop.Format") | ||
| defer done() | ||
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| // Generated files shouldn't be edited. So, don't format them | ||
| if IsGenerated(ctx, snapshot, fh.URI()) { | ||
| return nil, fmt.Errorf("can't format %q: file is generated", fh.URI().Filename()) | ||
| } | ||
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| pgf, err := snapshot.ParseGo(ctx, fh, ParseFull) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // Even if this file has parse errors, it might still be possible to format it. | ||
| // Using format.Node on an AST with errors may result in code being modified. | ||
| // Attempt to format the source of this file instead. | ||
| if pgf.ParseErr != nil { | ||
| formatted, err := formatGopSource(ctx, fh) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return computeTextEdits(ctx, snapshot, pgf, string(formatted)) | ||
| } | ||
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| // format.Node changes slightly from one release to another, so the version | ||
| // of Go used to build the LSP server will determine how it formats code. | ||
| // This should be acceptable for all users, who likely be prompted to rebuild | ||
| // the LSP server on each Go release. | ||
| buf := &bytes.Buffer{} | ||
| fset := tokeninternal.FileSetFor(pgf.Tok) | ||
| if err := format.Node(buf, fset, pgf.File); err != nil { | ||
| return nil, err | ||
| } | ||
| formatted := buf.String() | ||
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| // Apply additional formatting, if any is supported. Currently, the only | ||
| // supported additional formatter is gofumpt. | ||
| if format := snapshot.Options().GofumptFormat; snapshot.Options().Gofumpt && format != nil { | ||
| // gofumpt can customize formatting based on language version and module | ||
| // path, if available. | ||
| // | ||
| // Try to derive this information, but fall-back on the default behavior. | ||
| // | ||
| // TODO: under which circumstances can we fail to find module information? | ||
| // Can this, for example, result in inconsistent formatting across saves, | ||
| // due to pending calls to packages.Load? | ||
| var langVersion, modulePath string | ||
| meta, err := NarrowestMetadataForFile(ctx, snapshot, fh.URI()) | ||
| if err == nil { | ||
| if mi := meta.Module; mi != nil { | ||
| langVersion = mi.GoVersion | ||
| modulePath = mi.Path | ||
| } | ||
| } | ||
| b, err := format(ctx, langVersion, modulePath, buf.Bytes()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| formatted = string(b) | ||
| } | ||
| return computeTextEdits(ctx, snapshot, pgf, formatted) | ||
| } | ||
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| func formatGopSource(ctx context.Context, fh FileHandle) ([]byte, error) { | ||
| _, done := event.Start(ctx, "gop.formatSource") | ||
| defer done() | ||
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| data, err := fh.Content() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return format.Source(data, isClass(fh)) | ||
| } | ||
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| func isClass(fh FileHandle) bool { | ||
| fext := filepath.Ext(fh.URI().Filename()) | ||
| return goputil.FileKind(fext) == goputil.FileGopClass | ||
| } |