diff options
author | Thomas Voss <mail@thomasvoss.com> | 2025-06-06 02:49:26 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2025-06-06 02:49:26 +0200 |
commit | 746a09a5854b9ce17e40caead51e1a42c2721bb1 (patch) | |
tree | 474d9a11c3b82196577b61333dffe3c94c5258fb /vendor/golang.org/x/tools/go/packages/external.go | |
parent | efa0bd7df5f51d47c50efc446fd2f32996ab79be (diff) |
Unvendor dependencies
Diffstat (limited to 'vendor/golang.org/x/tools/go/packages/external.go')
-rw-r--r-- | vendor/golang.org/x/tools/go/packages/external.go | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go deleted file mode 100644 index c2b4b71..0000000 --- a/vendor/golang.org/x/tools/go/packages/external.go +++ /dev/null @@ -1,156 +0,0 @@ -// Copyright 2018 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 packages - -// This file defines the protocol that enables an external "driver" -// tool to supply package metadata in place of 'go list'. - -import ( - "bytes" - "encoding/json" - "fmt" - "os" - "os/exec" - "strings" -) - -// DriverRequest defines the schema of a request for package metadata -// from an external driver program. The JSON-encoded DriverRequest -// message is provided to the driver program's standard input. The -// query patterns are provided as command-line arguments. -// -// See the package documentation for an overview. -type DriverRequest struct { - Mode LoadMode `json:"mode"` - - // Env specifies the environment the underlying build system should be run in. - Env []string `json:"env"` - - // BuildFlags are flags that should be passed to the underlying build system. - BuildFlags []string `json:"build_flags"` - - // Tests specifies whether the patterns should also return test packages. - Tests bool `json:"tests"` - - // Overlay maps file paths (relative to the driver's working directory) - // to the contents of overlay files (see Config.Overlay). - Overlay map[string][]byte `json:"overlay"` -} - -// DriverResponse defines the schema of a response from an external -// driver program, providing the results of a query for package -// metadata. The driver program must write a JSON-encoded -// DriverResponse message to its standard output. -// -// See the package documentation for an overview. -type DriverResponse struct { - // NotHandled is returned if the request can't be handled by the current - // driver. If an external driver returns a response with NotHandled, the - // rest of the DriverResponse is ignored, and go/packages will fallback - // to the next driver. If go/packages is extended in the future to support - // lists of multiple drivers, go/packages will fall back to the next driver. - NotHandled bool - - // Compiler and Arch are the arguments pass of types.SizesFor - // to get a types.Sizes to use when type checking. - Compiler string - Arch string - - // Roots is the set of package IDs that make up the root packages. - // We have to encode this separately because when we encode a single package - // we cannot know if it is one of the roots as that requires knowledge of the - // graph it is part of. - Roots []string `json:",omitempty"` - - // Packages is the full set of packages in the graph. - // The packages are not connected into a graph. - // The Imports if populated will be stubs that only have their ID set. - // Imports will be connected and then type and syntax information added in a - // later pass (see refine). - Packages []*Package - - // GoVersion is the minor version number used by the driver - // (e.g. the go command on the PATH) when selecting .go files. - // Zero means unknown. - GoVersion int -} - -// driver is the type for functions that query the build system for the -// packages named by the patterns. -type driver func(cfg *Config, patterns ...string) (*DriverResponse, error) - -// findExternalDriver returns the file path of a tool that supplies -// the build system package structure, or "" if not found." -// If GOPACKAGESDRIVER is set in the environment findExternalTool returns its -// value, otherwise it searches for a binary named gopackagesdriver on the PATH. -func findExternalDriver(cfg *Config) driver { - const toolPrefix = "GOPACKAGESDRIVER=" - tool := "" - for _, env := range cfg.Env { - if val := strings.TrimPrefix(env, toolPrefix); val != env { - tool = val - } - } - if tool != "" && tool == "off" { - return nil - } - if tool == "" { - var err error - tool, err = exec.LookPath("gopackagesdriver") - if err != nil { - return nil - } - } - return func(cfg *Config, words ...string) (*DriverResponse, error) { - req, err := json.Marshal(DriverRequest{ - Mode: cfg.Mode, - Env: cfg.Env, - BuildFlags: cfg.BuildFlags, - Tests: cfg.Tests, - Overlay: cfg.Overlay, - }) - if err != nil { - return nil, fmt.Errorf("failed to encode message to driver tool: %v", err) - } - - buf := new(bytes.Buffer) - stderr := new(bytes.Buffer) - cmd := exec.CommandContext(cfg.Context, tool, words...) - cmd.Dir = cfg.Dir - // The cwd gets resolved to the real path. On Darwin, where - // /tmp is a symlink, this breaks anything that expects the - // working directory to keep the original path, including the - // go command when dealing with modules. - // - // os.Getwd stdlib has a special feature where if the - // cwd and the PWD are the same node then it trusts - // the PWD, so by setting it in the env for the child - // process we fix up all the paths returned by the go - // command. - // - // (See similar trick in Invocation.run in ../../internal/gocommand/invoke.go) - cmd.Env = append(slicesClip(cfg.Env), "PWD="+cfg.Dir) - cmd.Stdin = bytes.NewReader(req) - cmd.Stdout = buf - cmd.Stderr = stderr - - if err := cmd.Run(); err != nil { - return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr) - } - if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTDRIVERERRORS") != "" { - fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(cmd), stderr) - } - - var response DriverResponse - if err := json.Unmarshal(buf.Bytes(), &response); err != nil { - return nil, err - } - return &response, nil - } -} - -// slicesClip removes unused capacity from the slice, returning s[:len(s):len(s)]. -// TODO(adonovan): use go1.21 slices.Clip. -func slicesClip[S ~[]E, E any](s S) S { return s[:len(s):len(s)] } |