Changeset 478 for trunk/Include/com/bstring.ab

Timestamp:

Mar 13, 2008, 9:06:43 PM (17 years ago)

Author:

イグトランス (egtra)

Message:

現在向けに修正（参照型のポインタの排除など）

File:

• trunk/Include/com/bstring.ab (modified) (7 diffs)

trunk/Include/com/bstring.ab

@@ -1 +1 @@
 ' com/bstring.ab
-
-'#require <ole2.ab>
-'#require <oleauto.ab>
 
 Namespace ActiveBasic
@@ -8 +5 @@
 
 Class BString
-    'Inherits System.IDisposable, System.ICloneable
+    Implements System.IDisposable ', System.ICloneable
 Public
     Sub BString()
@@ -19 +16 @@
 
     Sub BString(s As BString)
-        BString.Copy(This.bs, s.bs)
-    End Sub
-
-    Sub BString(s As LPCOLESTR)
-        bs = SysAllocString(s)
+        If Not IsNothing(s) Then
+            bs = copy(s.bs)
+        End If
     End Sub
 
     Sub BString(s As LPCOLESTR, len As DWord)
-        bs = SysAllocStringLen(s, len)
-    End Sub
-
-    Sub BString(s As PCSTR)
-        Init(s, lstrlenA(s))
-    End Sub
-
-    Sub BString(s As PCSTR, len As DWord)
-        Dim lenBS = MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, 0, 0)
-        bs = SysAllocStringLen(0, lenBS)
-        MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, bs, lenBS)
+        If s <> 0 Then
+            bs = SysAllocStringLen(s, len)
+        End If
     End Sub
 
     Sub BString(s As String)
-        Init(s.StrPtr, s.Length As DWord)
-    End Sub
+        If Not IsNothing(s) Then
+            Init(s.StrPtr, s.Length As DWord)
+        End If
+    End Sub
+
+    Static Function FromBStr(bs As BSTR) As BString
+        FromBStr = New BString(bs, SysStringLen(bs))
+    End Function
+
+    Static Function FromCStr(s As PCWSTR) As BString
+        If s <> 0 Then
+            FromCStr = New BString(s, lstrlenW(s))
+        Else
+            FromCStr = New BString
+        End If
+    End Function
+
+    Static Function FromCStr(s As PCWSTR, len As DWord) As BString
+        If s <> 0 Then
+            FromCStr = New BString(s, len)
+        Else
+            FromCStr = New BString
+        End If
+    End Function
+
+    Static Function FromCStr(s As PCSTR) As BString
+        Dim dst As PCWSTR
+        Dim lenW = GetStr(s, dst)
+        FromCStr = FromCStr(s, lenW)
+    End Function
+
+    Static Function FromCStr(s As PCSTR, len As DWord) As BString
+        Dim dst As PCWSTR
+        Dim lenW = GetStr(s, len, dst)
+        FromCStr = FromCStr(s, lenW)
+    End Function
 
     Sub ~BString()
@@ -48 +69 @@
     End Sub
 
-    Sub Assign(bstr As BString)
-        Clear()
-        BString.Copy(This.bs, bstr.bs)
-    End Sub
-
-    Sub Assign(s As LPCOLESTR)
-        Clear()
-        s = SysAllocString(s)
-    End Sub
-
-    Sub AssignFromBStr(bstr As BSTR)
-        Clear()
-        BString.Copy(bs, bstr)
-    End Sub
-
     Const Function Copy() As BSTR
-        BString.Copy(Copy, bs)
+        Copy = copy(bs)
     End Function
 
@@ -76 +82 @@
 
     Sub Clear()
-        If bs <> 0 Then
-            SysFreeString(bs)
-            bs = 0
-        End If
+        reset(0)
     End Sub
 
     Sub Attach(ByRef bstr As BSTR)
-        Clear()
-        BString.Move(bs, bstr)
+        reset(move(bstr))
     End Sub
 
     Function Detach() As BSTR
-        BString.Move(Detach, bs)
+        Detach = move(bs)
     End Function
 
     Function BStr() As BSTR
         BStr = bs
-    End Function
-/*
-    Static Function Assgin(bs As BSTR) As BString
-        Assgin = New BString
-        Assgin.Assgin(bs)
     End Function
 
@@ -104 +101 @@
         Attach.Attach(bs)
     End Function
-*/
+
     Const Function Length() As DWord
-        Length = SysStringLen(bs)
+        Length = GetDWord(bs As VoidPtr - SizeOf (DWord)) 'SysStringLen(bs)
     End Function
 
     Const Function Operator [](i As SIZE_T) As OLECHAR
-#ifdef _DEBUG
         If i > Length Then
-            'Throw OutOfRangeException
-        End If
-#endif
+            Throw New ArgumentOutOfRangeException("i")
+        End If
         Return bs[i]
     End Function
 
     Sub Operator []=(i As SIZE_T, c As OLECHAR)
-#ifdef _DEBUG
         If i > Length Then
-            'Throw OutOfRangeException
-        End If
-#endif
+            Throw New ArgumentOutOfRangeException("i")
+        End If
         bs[i] = c
     End Sub
@@ -135 +128 @@
     End Function
 
+    Override Function Equals(o As Object) As Boolean
+        If Not IsNothing(o) Then
+            If This.GetType().Equals(o.GetType()) Then
+                Equals(o As BString)
+            End If
+        End If
+    End Function
+
+    Const Function Equals(s As BString) As Boolean
+        Equals = Compare(This, s) = 0
+    End Function
+
+    Static Function Compare(l As BString, r As BString) As Long
+        If IsNullOrEmpty(l) Then
+            If IsNullOrEmpty(r) Then
+                Compare = 0
+            Else
+                Compare = -1
+            End If
+        Else
+            If IsNullOrEmpty(bsr) Then
+                Compare = 1
+            Else
+                Compare = Strings.ChrCmp(l.bs, l.Length As SIZE_T, r.bs, r.Length As SIZE_T)
+            End If
+        End If
+    End Function
+
+    Static Function IsNullOrEmpty(s As BString)
+        If IsNothing(s) Then
+            IsNullOrEmpty = True
+        ElseIf s.bs = 0 Then
+            IsNullOrEmpty = True
+        ElseIf s.Length = 0 Then
+            IsNullOrEmpty = True
+        Else
+            IsNullOrEmpty = False
+        End If
+    End Function
+
+    Function Operator ==(s As BString) As Boolean
+        Return Compare(This, s) = 0
+    End Function
+
+    Function Operator <>(s As BString) As Boolean
+        Return Compare(This, s) <> 0
+    End Function
+
+    Function Operator <(s As BString) As Boolean
+        Return Compare(This, s) < 0
+    End Function
+
+    Function Operator <=(s As BString) As Boolean
+        Return Compare(This, s) <= 0
+    End Function
+
+    Function Operator >(s As BString) As Boolean
+        Return Compare(This, s) > 0
+    End Function
+
+    Function Operator >=(s As BString) As Boolean
+        Return Compare(This, s) >= 0
+    End Function
+
 Private
     bs As BSTR
 
-    Sub Init(s As PCSTR, len As DWord)
-        Dim lenBS = MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, 0, 0)
-        bs = SysAllocStringLen(0, lenBS)
-        MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, bs, lenBS)
-    End Sub
-
-    Static Sub Copy(ByRef dst As BSTR, ByVal src As BSTR)
-        dst = SysAllocStringLen(src, SysStringLen(src))
-    End Sub
-
-    Static Sub Move(ByRef dst As BSTR, ByRef src As BSTR)
-        dst = src
-        src = 0
-    End Sub
+    Sub init(s As PCSTR, len As DWord)
+        If <> 0 Then
+            Dim lenBS = MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, 0, 0)
+            bs = SysAllocStringLen(0, lenBS)
+            If bs <> 0 Then
+                MultiByteToWideChar(CP_THREAD_ACP, 0, s, len As Long, bs, lenBS)
+            End If
+        End If
+    End Sub
+
+    Sub reset(newBS As BSTR)
+        Dim old = InterlockedExchangePointer(bs, newBS)
+        SysFreeString(old)
+    End Sub
+
+    Static Function copy(src As BSTR) As BSTR
+        copy = SysAllocStringLen(src, SysStringLen(src))
+    End Function
+
+    Static Function move(ByRef src As BSTR) As BSTR
+        move = InterlockedExchangePointer(src, 0)
+    End Function
 End Class