fix: pass.FileContext

Signed-off-by: Sourya Vatsyayan <sourya@deepsource.io>

Author: sourya-deepsource

analysis/analyzer.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
 
 	sitter "github.com/smacker/go-tree-sitter"
 )
@@ -70,10 +71,27 @@ func walkTree(node *sitter.Node, f func(*sitter.Node)) {
 func Preorder(pass *Pass, fn func(*sitter.Node)) {
 	// TODO: cache the traversal results to avoid running the traversal for each analyzer
 	for _, file := range pass.Files {
+		pass.FileContext = file
 		walkTree(file.Ast, fn)
 	}
 }
 
+var defaultIgnoreDirs = []string{
+	"checkers",
+	"node_modules",
+	"vendor",
+	"dist",
+	"build",
+	"out",
+	".git",
+	".svn",
+	"venv",
+	"__pycache__",
+	".idea",
+	".vitepress",
+	".globstar", // may contain test files
+}
+
 func RunAnalyzers(path string, analyzers []*Analyzer) ([]*Issue, error) {
 	raisedIssues := []*Issue{}
 	langAnalyzerMap := make(map[Language][]*Analyzer)
@@ -88,12 +106,17 @@ func RunAnalyzers(path string, analyzers []*Analyzer) ([]*Issue, error) {
 		}
 
 		if info.IsDir() {
+			if slices.Contains(defaultIgnoreDirs, info.Name()) {
+				return filepath.SkipDir
+			}
 			return nil
 		}
 
 		file, err := ParseFile(path)
 		if err != nil {
-			fmt.Println(err)
+			if err != ErrUnsupportedLanguage {
+				fmt.Println(err)
+			}
 			return nil
 		}
 

analysis/language.go

@@ -229,11 +229,13 @@ func Parse(filePath string, source []byte, language Language, grammar *sitter.La
 
 // ParseFile parses the file at the given path using the appropriate
 // tree-sitter grammar.
+var ErrUnsupportedLanguage = fmt.Errorf("unsupported language")
+
 func ParseFile(filePath string) (*ParseResult, error) {
 	lang := LanguageFromFilePath(filePath)
 	grammar := lang.Grammar()
 	if grammar == nil {
-		return nil, fmt.Errorf("unsupported file type: %s", filePath)
+		return nil, ErrUnsupportedLanguage
 	}
 
 	source, err := os.ReadFile(filePath)

pkg/cli/cli.go

@@ -250,6 +250,7 @@ func (lr *lintResult) GetExitStatus(conf *config.Config) int {
 }
 
 var defaultIgnoreDirs = []string{
+	"checkers",
 	"node_modules",
 	"vendor",
 	"dist",