Add the missing check for NULL pointer before use it.

[mirror_edk2.git] / MdeModulePkg / Universal / SetupBrowserDxe / Ui.h

diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
index bd75714f7fe4e5b52397fac44e31ceff16aaeb5d..6b651037149b3ff6ff3479bed8d90d3d09df1234 100644 (file)
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
@@ -1,7 +1,7 @@
 /** @file\r
 Private structure, MACRO and function definitions for User Interface related functionalities.\r
 \r
-Copyright (c) 2004 - 2009, Intel Corporation\r
+Copyright (c) 2004 - 2010, Intel Corporation\r
 All rights reserved. This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -168,14 +168,15 @@ struct _UI_MENU_LIST {
 \r
 #define UI_MENU_LIST_FROM_LINK(a)  CR (a, UI_MENU_LIST, Link, UI_MENU_LIST_SIGNATURE)\r
 \r
-typedef struct _MENU_REFRESH_ENTRY {\r
-  struct _MENU_REFRESH_ENTRY  *Next;\r
+typedef struct _MENU_REFRESH_ENTRY MENU_REFRESH_ENTRY;\r
+struct _MENU_REFRESH_ENTRY {\r
+  MENU_REFRESH_ENTRY          *Next;\r
   UI_MENU_OPTION              *MenuOption;  // Describes the entry needing an update\r
   UI_MENU_SELECTION           *Selection;\r
   UINTN                       CurrentColumn;\r
   UINTN                       CurrentRow;\r
   UINTN                       CurrentAttribute;\r
-} MENU_REFRESH_ENTRY;\r
+};\r
 \r
 typedef struct {\r
   UINT16              ScanCode;\r
@@ -622,6 +623,8 @@ ClearLines (
   hit, then 2 Unicode character will consume an output storage\r
   space with size of CHAR16 till a NARROW_CHAR is hit.\r
 \r
+  If String is NULL, then ASSERT ().\r
+\r
   @param String          The input string to be counted.\r
 \r
   @return Storage space for the input string.\r
@@ -734,6 +737,80 @@ PopScope (
   OUT UINT8     *Operand\r
   );\r
 \r
+/**\r
+  Reset stack pointer to begin of the stack.\r
+\r
+**/\r
+VOID\r
+ResetCurrentExpressionStack (\r
+  VOID\r
+  );\r
+\r
+/**\r
+  Push current expression onto the Stack\r
+\r
+  @param  Pointer                Pointer to current expression.\r
+\r
+  @retval EFI_SUCCESS            The value was pushed onto the stack.\r
+  @retval EFI_OUT_OF_RESOURCES   There is not enough system memory to grow the stack.\r
+\r
+**/\r
+EFI_STATUS\r
+PushCurrentExpression (\r
+  IN VOID  *Pointer\r
+  );\r
+\r
+/**\r
+  Pop current expression from the Stack\r
+\r
+  @param  Pointer                Pointer to current expression to be pop.\r
+\r
+  @retval EFI_SUCCESS            The value was pushed onto the stack.\r
+  @retval EFI_OUT_OF_RESOURCES   There is not enough system memory to grow the stack.\r
+\r
+**/\r
+EFI_STATUS\r
+PopCurrentExpression (\r
+  OUT VOID    **Pointer\r
+  );\r
+\r
+/**\r
+  Reset stack pointer to begin of the stack.\r
+\r
+**/\r
+VOID\r
+ResetMapExpressionListStack (\r
+  VOID\r
+  );\r
+\r
+/**\r
+  Push the list of map expression onto the Stack\r
+\r
+  @param  Pointer                Pointer to the list of map expression to be pushed.\r
+\r
+  @retval EFI_SUCCESS            The value was pushed onto the stack.\r
+  @retval EFI_OUT_OF_RESOURCES   There is not enough system memory to grow the stack.\r
+\r
+**/\r
+EFI_STATUS\r
+PushMapExpressionList (\r
+  IN VOID  *Pointer\r
+  );\r
+\r
+/**\r
+  Pop the list of map expression from the Stack\r
+\r
+  @param  Pointer                Pointer to the list of map expression to be pop.\r
+\r
+  @retval EFI_SUCCESS            The value was pushed onto the stack.\r
+  @retval EFI_OUT_OF_RESOURCES   There is not enough system memory to grow the stack.\r
+\r
+**/\r
+EFI_STATUS\r
+PopMapExpressionList (\r
+  OUT VOID    **Pointer\r
+  );\r
+\r
 /**\r
   Get Form given its FormId.\r
 \r