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configure.go
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configure.go
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package gazelle
import (
"flag"
"fmt"
"log"
"os"
"path"
"strconv"
"strings"
"github.com/bazelbuild/bazel-gazelle/config"
"github.com/bazelbuild/bazel-gazelle/label"
"github.com/bazelbuild/bazel-gazelle/rule"
)
// Configurer satisfies the config.Configurer interface. It's the
// language-specific configuration extension.
type Configurer struct {
config.Configurer
}
// RegisterFlags registers command-line flags used by the extension. This
// method is called once with the root configuration when Gazelle
// starts. RegisterFlags may set an initial values in Config.Exts. When flags
// are set, they should modify these values.
func (ts *Configurer) RegisterFlags(fs *flag.FlagSet, cmd string, c *config.Config) {}
// CheckFlags validates the configuration after command line flags are parsed.
// This is called once with the root configuration when Gazelle starts.
// CheckFlags may set default values in flags or make implied changes.
func (ts *Configurer) CheckFlags(fs *flag.FlagSet, c *config.Config) error {
return nil
}
// KnownDirectives returns a list of directive keys that this Configurer can
// interpret. Gazelle prints errors for directives that are not recoginized by
// any Configurer.
func (ts *Configurer) KnownDirectives() []string {
return []string{
Directive_TypeScriptExtension,
Directive_GenerationMode,
Directive_Lockfile,
Directive_IgnoreImports,
Directive_Resolve,
Directive_ValidateImportStatements,
Directive_LibraryNamingConvention,
Directive_TestsNamingConvention,
Directive_NpmPackageNameConvention,
Directive_LibraryFiles,
Directive_TestFiles,
}
}
// Configure modifies the configuration using directives and other information
// extracted from a build file. Configure is called in each directory.
//
// c is the configuration for the current directory. It starts out as a copy
// of the configuration for the parent directory.
//
// rel is the slash-separated relative path from the repository root to
// the current directory. It is "" for the root directory itself.
//
// f is the build file for the current directory or nil if there is no
// existing build file.
func (ts *TypeScript) Configure(c *config.Config, rel string, f *rule.File) {
BazelLog.Tracef("Configure %s", rel)
// Create the root config.
if _, exists := c.Exts[LanguageName]; !exists {
c.Exts[LanguageName] = NewConfigs()
}
if f != nil {
ts.readDirectives(c, rel, f)
}
ts.collectIgnoreFiles(c, rel)
ts.readWorkspaces(c, rel)
}
func (ts *TypeScript) collectIgnoreFiles(c *config.Config, rel string) {
cfgs := c.Exts[LanguageName].(Configs)
// Collect gitignore style ignore files in this directory.
for _, ignoreFileName := range bazelIgnoreFiles {
ignoreRelPath := path.Join(rel, ignoreFileName)
ignoreFilePath := path.Join(c.RepoRoot, ignoreRelPath)
if _, ignoreErr := os.Stat(ignoreFilePath); ignoreErr == nil {
BazelLog.Tracef("Add ignore file %s", ignoreRelPath)
ignoreErr := cfgs.gitignore.AddIgnoreFile(rel, ignoreFilePath)
if ignoreErr != nil {
log.Fatalf("Failed to add ignore file %s: %v", ignoreRelPath, ignoreErr)
}
}
}
}
func (ts *TypeScript) readWorkspaces(c *config.Config, rel string) {
configs := c.Exts[LanguageName].(Configs)
config := configs.Get(rel)
lockfilePath := path.Join(c.RepoRoot, rel, config.PnpmLockfile())
if _, err := os.Stat(lockfilePath); err == nil {
ts.addPnpmLockfile(config, c.RepoName, c.RepoRoot, path.Join(rel, config.PnpmLockfile()))
}
}
func (ts *TypeScript) readDirectives(c *config.Config, rel string, f *rule.File) {
configs := c.Exts[LanguageName].(Configs)
config := configs.Get(rel)
for _, d := range f.Directives {
value := strings.TrimSpace(d.Value)
switch d.Key {
case "exclude":
// We record the exclude directive since we do manual tree traversal of subdirs.
config.AddExcludedPattern(value)
case Directive_TypeScriptExtension:
switch d.Value {
case "enabled":
config.SetGenerationEnabled(true)
case "disabled":
config.SetGenerationEnabled(false)
default:
err := fmt.Errorf("invalid value for directive %q: %s: possible values are enabled/disabled",
Directive_TypeScriptExtension, d.Value)
log.Fatal(err)
}
case Directive_GenerationMode:
mode := GenerationModeType(strings.TrimSpace(d.Value))
switch mode {
case GenerationModeDirectory:
config.SetGenerationMode(mode)
case GenerationModeNone:
config.SetGenerationMode(mode)
default:
log.Fatalf("invalid value for directive %q: %s", Directive_GenerationMode, d.Value)
}
case Directive_Lockfile:
config.SetPnpmLockfile(value)
case Directive_IgnoreImports:
config.AddIgnoredImport(strings.TrimSpace(value))
case Directive_Resolve:
globTarget := strings.Split(value, " ")
if len(globTarget) != 2 {
err := fmt.Errorf("invalid value for directive %q: %s: value must be filename/glob + label",
Directive_Resolve, d.Value)
log.Fatal(err)
}
label, labelErr := label.Parse(strings.TrimSpace(globTarget[1]))
if labelErr != nil {
err := fmt.Errorf("invalid label for directive %q: %s",
Directive_Resolve, label)
log.Fatal(err)
}
config.AddResolve(strings.TrimSpace(globTarget[0]), &label)
case Directive_ValidateImportStatements:
v, err := strconv.ParseBool(value)
if err != nil {
log.Fatal(err)
}
config.SetValidateImportStatements(v)
case Directive_LibraryNamingConvention:
config.SetLibraryNamingConvention(value)
case Directive_TestsNamingConvention:
config.SetTestsNamingLibraryConvention(value)
case Directive_NpmPackageNameConvention:
config.SetNpmPackageNamingConvention(value)
case Directive_LibraryFiles:
config.AddLibraryFileGlob(value)
case Directive_TestFiles:
config.AddTestFileGlob(value)
}
}
}