refactor: move extractTypeFromExpression to utils_ast.go

utils.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"go/ast"
 	"path/filepath"
 	"strings"
 )
@@ -14,38 +13,6 @@ func joinLinuxPath(elem ...string) string {
 	return joinedPath
 }
 
-func extractTypeFromExpression(expr ast.Expr) string {
-	switch expr := expr.(type) {
-	case *ast.Ident:
-		return expr.Name
-	case *ast.StarExpr:
-		return "*" + extractTypeFromExpression(expr.X)
-	case *ast.ArrayType:
-		return "[]" + extractTypeFromExpression(expr.Elt)
-	case *ast.MapType:
-		return "map[" + extractTypeFromExpression(expr.Key) + "]" + extractTypeFromExpression(expr.Value)
-	case *ast.StructType:
-		return "struct{}"
-	case *ast.InterfaceType:
-		return "interface{}"
-	case *ast.ChanType:
-		var dir string
-		switch expr.Dir {
-		case ast.SEND:
-			dir = "chan<- "
-		case ast.RECV:
-			dir = "<-chan "
-		default:
-			dir = "chan "
-		}
-		return dir + extractTypeFromExpression(expr.Value)
-	case *ast.SelectorExpr:
-		return extractTypeFromExpression(expr.X) + "." + expr.Sel.Name
-	default:
-		return "unknown"
-	}
-}
-
 func in(target string, list []string) bool {
 	for _, item := range list {
 		if item == target {

utils_ast.go

@@ -56,3 +56,35 @@ func getFields(node *ast.File, typeName string) ([]Field, error) {
 
 	return fields, err
 }
+
+func extractTypeFromExpression(expr ast.Expr) string {
+	switch expr := expr.(type) {
+	case *ast.Ident:
+		return expr.Name
+	case *ast.StarExpr:
+		return "*" + extractTypeFromExpression(expr.X)
+	case *ast.ArrayType:
+		return "[]" + extractTypeFromExpression(expr.Elt)
+	case *ast.MapType:
+		return "map[" + extractTypeFromExpression(expr.Key) + "]" + extractTypeFromExpression(expr.Value)
+	case *ast.StructType:
+		return "struct{}"
+	case *ast.InterfaceType:
+		return "interface{}"
+	case *ast.ChanType:
+		var dir string
+		switch expr.Dir {
+		case ast.SEND:
+			dir = "chan<- "
+		case ast.RECV:
+			dir = "<-chan "
+		default:
+			dir = "chan "
+		}
+		return dir + extractTypeFromExpression(expr.Value)
+	case *ast.SelectorExpr:
+		return extractTypeFromExpression(expr.X) + "." + expr.Sel.Name
+	default:
+		return "unknown"
+	}
+}