Changeset 706 for trunk

Timestamp:

Jun 28, 2009, 2:23:39 AM (15 years ago)

Author:

イグトランス (egtra)

Message:

String.Joinで引数stringsの配列の要素が0だった場合にもエラーを返さないように修正。また、stringsがNothingのときには例外を投げるように修正。

File:

• trunk/ab5.0/ablib/src/Classes/System/String.ab (modified) (3 diffs)

trunk/ab5.0/ablib/src/Classes/System/String.ab

@@ -607 +607 @@
         End Function
 
-        Static Function Join(separator As String, strings As System.Collections.Generic.List<String>) As String
+        Static Function Join(separator As String, strings As System.Collections.Generic.IList<String>) As String
             Return Join(separator, strings, 0, strings.Count)
         End Function
 
-        Static Function Join(separator As String, strings As System.Collections.Generic.List<String>, startIndex As Long, count As Long) As String
-            If (startIndex+count > strings.Count) or (startIndex < 0) or (count < 1) Then
+        Static Function Join(separator As String, strings As System.Collections.Generic.IList<String>, startIndex As Long, count As Long) As String
+            If ObjPtr(strings) = NULL Then ' IsNothingだとエラーになる
+                Throw New ArgumentNullException("strings")
+            ElseIf (startIndex+count > strings.Count) or (startIndex < 0) or (count < 0) Then
                 Throw New ArgumentOutOfRangeException("String.Join: One or more arguments are out of range value.", "startIndex or count")
             End If
 
-            Dim string As String
-            Dim i As Long
-            For i = startIndex To startIndex + count - 2
-                string += strings[i] + separator
-            Next
-            Return string + strings[i]
+            If count = 0 Then
+                Return ""
+            Else
+                Dim string As String
+                Dim i As Long
+                For i = startIndex To startIndex + count - 2
+                    string += strings.Item[i] + separator
+                Next
+                Return string + strings.Item[i]
+            End If
         End Function
 
@@ -687 +693 @@
             sb.Append(c, total - m_Length)
             sb.Append(This)
-            Return sb.ToString
+            Return sb.ToString()
         End Function
 
@@ -704 +710 @@
             sb.Append(This)
             sb.Append(c, total - m_Length)
-            Return sb.ToString
+            Return sb.ToString()
         End Function
     Private