Reorganize code into individual tool files

tool_find_references.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"go/ast"
+	"go/token"
+)
+
+type Reference struct {
+	Context  string   `json:"context"`
+	Kind     string   `json:"kind"`
+	Position Position `json:"position"`
+}
+
+func findReferences(dir string, symbol string) ([]Reference, error) {
+	var refs []Reference
+
+	err := walkGoFiles(dir, func(path string, src []byte, file *ast.File, fset *token.FileSet) error {
+
+		ast.Inspect(file, func(n ast.Node) bool {
+			switch node := n.(type) {
+			case *ast.Ident:
+				if node.Name == symbol {
+					pos := fset.Position(node.Pos())
+					kind := identifyReferenceKind(node)
+					context := extractContext(src, pos)
+					
+					refs = append(refs, Reference{
+						Context:  context,
+						Kind:     kind,
+						Position: newPosition(pos),
+					})
+				}
+
+			case *ast.SelectorExpr:
+				if node.Sel.Name == symbol {
+					pos := fset.Position(node.Sel.Pos())
+					context := extractContext(src, pos)
+					
+					refs = append(refs, Reference{
+						Context:  context,
+						Kind:     "selector",
+						Position: newPosition(pos),
+					})
+				}
+			}
+			return true
+		})
+
+		return nil
+	})
+
+	return refs, err
+}
+
+func identifyReferenceKind(ident *ast.Ident) string {
+	return "identifier"
+}