chore: import upstream snapshot with attribution

internal/parser/languages/d.go

@@ -0,0 +1,47 @@
+package languages
+
+import (
+	"regexp"
+
+	dforest "github.com/alexaandru/go-sitter-forest/d"
+
+	"github.com/zzet/gortex/internal/graph"
+	"github.com/zzet/gortex/internal/parser"
+	"github.com/zzet/gortex/internal/parser/forest"
+)
+
+// D migration: forest's walker handles class_declaration /
+// struct_declaration / module_declaration via the generic suffix
+// matcher. D's `import x.y.z;` idiom stays regex.
+var dImportRe = regexp.MustCompile(`(?m)^\s*(?:static\s+|public\s+|private\s+)?import\s+([\w.]+)`)
+
+type DExtractor struct {
+	forest *forest.Extractor
+}
+
+func NewDExtractor() *DExtractor {
+	return &DExtractor{
+		forest: forest.New("d", []string{".d", ".di"}, dforest.GetLanguage, dforest.GetQuery),
+	}
+}
+
+func (e *DExtractor) Language() string     { return "d" }
+func (e *DExtractor) Extensions() []string { return []string{".d", ".di"} }
+
+func (e *DExtractor) Extract(filePath string, src []byte) (*parser.ExtractionResult, error) {
+	res, err := e.forest.Extract(filePath, src)
+	if err != nil {
+		return nil, err
+	}
+	for _, m := range dImportRe.FindAllSubmatchIndex(src, -1) {
+		mod := string(src[m[2]:m[3]])
+		line := lineAt(src, m[0])
+		res.Edges = append(res.Edges, &graph.Edge{
+			From: filePath, To: "unresolved::import::" + mod,
+			Kind: graph.EdgeImports, FilePath: filePath, Line: line,
+		})
+	}
+	return res, nil
+}
+
+var _ parser.Extractor = (*DExtractor)(nil)