Enable nest for suppressif/grayoutif/diableif for form/question/option.
Signed-off-by: ydong10 Reviewed-by: lgao4 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12972 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
@@ -34,6 +34,19 @@ EFI_HII_VALUE *mMapExpressionListStack = NULL;
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EFI_HII_VALUE *mMapExpressionListEnd = NULL;
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EFI_HII_VALUE *mMapExpressionListPointer = NULL;
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FORM_EXPRESSION **mFormExpressionStack = NULL;
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FORM_EXPRESSION **mFormExpressionEnd = NULL;
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FORM_EXPRESSION **mFormExpressionPointer = NULL;
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FORM_EXPRESSION **mStatementExpressionStack = NULL;
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FORM_EXPRESSION **mStatementExpressionEnd = NULL;
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FORM_EXPRESSION **mStatementExpressionPointer = NULL;
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FORM_EXPRESSION **mOptionExpressionStack = NULL;
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FORM_EXPRESSION **mOptionExpressionEnd = NULL;
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FORM_EXPRESSION **mOptionExpressionPointer = NULL;
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//
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// Unicode collation protocol interface
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//
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@@ -194,7 +207,10 @@ ResetCurrentExpressionStack (
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VOID
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)
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{
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mCurrentExpressionPointer = mCurrentExpressionStack;
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mCurrentExpressionPointer = mCurrentExpressionStack;
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mFormExpressionPointer = mFormExpressionStack;
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mStatementExpressionPointer = mStatementExpressionStack;
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mOptionExpressionPointer = mOptionExpressionStack;
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}
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@@ -267,6 +283,294 @@ ResetMapExpressionListStack (
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}
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/**
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Grow size of the stack.
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This is an internal function.
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@param Stack On input: old stack; On output: new stack
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@param StackPtr On input: old stack pointer; On output: new stack
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pointer
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@param StackEnd On input: old stack end; On output: new stack end
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@param MemberSize The stack member size.
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@retval EFI_SUCCESS Grow stack success.
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@retval EFI_OUT_OF_RESOURCES No enough memory for stack space.
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**/
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EFI_STATUS
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GrowConditionalStack (
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IN OUT FORM_EXPRESSION ***Stack,
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IN OUT FORM_EXPRESSION ***StackPtr,
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IN OUT FORM_EXPRESSION ***StackEnd,
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IN UINTN MemberSize
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)
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{
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UINTN Size;
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FORM_EXPRESSION **NewStack;
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Size = EXPRESSION_STACK_SIZE_INCREMENT;
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if (*StackPtr != NULL) {
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Size = Size + (*StackEnd - *Stack);
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}
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NewStack = AllocatePool (Size * MemberSize);
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if (NewStack == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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if (*StackPtr != NULL) {
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//
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// Copy from Old Stack to the New Stack
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//
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CopyMem (
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NewStack,
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*Stack,
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(*StackEnd - *Stack) * MemberSize
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);
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//
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// Free The Old Stack
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//
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FreePool (*Stack);
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}
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//
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// Make the Stack pointer point to the old data in the new stack
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//
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*StackPtr = NewStack + (*StackPtr - *Stack);
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*Stack = NewStack;
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*StackEnd = NewStack + Size;
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return EFI_SUCCESS;
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}
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/**
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Push an element onto the Stack.
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@param Stack On input: old stack; On output: new stack
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@param StackPtr On input: old stack pointer; On output: new stack
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pointer
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@param StackEnd On input: old stack end; On output: new stack end
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@param Data Data to push.
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@retval EFI_SUCCESS Push stack success.
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**/
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EFI_STATUS
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PushConditionalStack (
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IN OUT FORM_EXPRESSION ***Stack,
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IN OUT FORM_EXPRESSION ***StackPtr,
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IN OUT FORM_EXPRESSION ***StackEnd,
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IN FORM_EXPRESSION **Data
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)
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{
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EFI_STATUS Status;
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//
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// Check for a stack overflow condition
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//
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if (*StackPtr >= *StackEnd) {
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//
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// Grow the stack
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//
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Status = GrowConditionalStack (Stack, StackPtr, StackEnd, sizeof (FORM_EXPRESSION *));
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if (EFI_ERROR (Status)) {
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return Status;
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}
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}
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//
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// Push the item onto the stack
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//
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CopyMem (*StackPtr, Data, sizeof (FORM_EXPRESSION *));
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*StackPtr = *StackPtr + 1;
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return EFI_SUCCESS;
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}
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/**
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Pop an element from the stack.
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@param Stack On input: old stack
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@param StackPtr On input: old stack pointer; On output: new stack pointer
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@param Data Data to pop.
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@retval EFI_SUCCESS The value was popped onto the stack.
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@retval EFI_ACCESS_DENIED The pop operation underflowed the stack
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**/
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EFI_STATUS
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PopConditionalStack (
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IN FORM_EXPRESSION **Stack,
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IN OUT FORM_EXPRESSION ***StackPtr,
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OUT FORM_EXPRESSION **Data
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)
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{
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//
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// Check for a stack underflow condition
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//
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if (*StackPtr == Stack) {
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return EFI_ACCESS_DENIED;
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}
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//
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// Pop the item off the stack
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//
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*StackPtr = *StackPtr - 1;
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CopyMem (Data, *StackPtr, sizeof (FORM_EXPRESSION *));
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return EFI_SUCCESS;
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}
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/**
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Get the expression list count.
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@param Level Which type this expression belong to. Form,
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statement or option?
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@retval >=0 The expression count
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@retval -1 Input parameter error.
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**/
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INTN
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GetConditionalExpressionCount (
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IN EXPRESS_LEVEL Level
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)
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{
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switch (Level) {
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case ExpressForm:
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return mFormExpressionPointer - mFormExpressionStack;
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case ExpressStatement:
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return mStatementExpressionPointer - mStatementExpressionStack;
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case ExpressOption:
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return mOptionExpressionPointer - mOptionExpressionStack;
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default:
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ASSERT (FALSE);
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return -1;
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}
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}
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/**
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Get the expression Buffer pointer.
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@param Level Which type this expression belong to. Form,
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statement or option?
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@retval The start pointer of the expression buffer or NULL.
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**/
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FORM_EXPRESSION **
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GetConditionalExpressionList (
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IN EXPRESS_LEVEL Level
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)
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{
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switch (Level) {
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case ExpressForm:
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return mFormExpressionStack;
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case ExpressStatement:
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return mStatementExpressionStack;
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case ExpressOption:
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return mOptionExpressionStack;
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default:
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ASSERT (FALSE);
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return NULL;
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}
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}
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/**
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Push the expression options onto the Stack.
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@param Pointer Pointer to the current expression.
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@param Level Which type this expression belong to. Form,
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statement or option?
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@retval EFI_SUCCESS The value was pushed onto the stack.
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@retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
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**/
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EFI_STATUS
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PushConditionalExpression (
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IN FORM_EXPRESSION *Pointer,
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IN EXPRESS_LEVEL Level
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)
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{
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switch (Level) {
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case ExpressForm:
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return PushConditionalStack (
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&mFormExpressionStack,
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&mFormExpressionPointer,
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&mFormExpressionEnd,
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&Pointer
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);
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case ExpressStatement:
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return PushConditionalStack (
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&mStatementExpressionStack,
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&mStatementExpressionPointer,
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&mStatementExpressionEnd,
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&Pointer
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);
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case ExpressOption:
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return PushConditionalStack (
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&mOptionExpressionStack,
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&mOptionExpressionPointer,
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&mOptionExpressionEnd,
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&Pointer
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);
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default:
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ASSERT (FALSE);
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return EFI_INVALID_PARAMETER;
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}
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}
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/**
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Pop the expression options from the Stack
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@param Level Which type this expression belong to. Form,
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statement or option?
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@retval EFI_SUCCESS The value was pushed onto the stack.
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@retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
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**/
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EFI_STATUS
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PopConditionalExpression (
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IN EXPRESS_LEVEL Level
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)
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{
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FORM_EXPRESSION *Pointer;
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switch (Level) {
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case ExpressForm:
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return PopConditionalStack (
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mFormExpressionStack,
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&mFormExpressionPointer,
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&Pointer
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);
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case ExpressStatement:
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return PopConditionalStack (
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mStatementExpressionStack,
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&mStatementExpressionPointer,
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&Pointer
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);
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case ExpressOption:
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return PopConditionalStack (
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mOptionExpressionStack,
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&mOptionExpressionPointer,
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&Pointer
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);
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default:
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ASSERT (FALSE);
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return EFI_INVALID_PARAMETER;
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}
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}
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/**
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Push the list of map expression onto the Stack
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@@ -2868,3 +3172,80 @@ Done:
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return Status;
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}
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/**
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Return the result of the expression list. Check the expression list and
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return the highest priority express result.
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Priority: DisableIf > SuppressIf > GrayOutIf > FALSE
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@param ExpList The input expression list.
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@param Evaluate Whether need to evaluate the expression first.
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@param FormSet FormSet associated with this expression.
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@param Form Form associated with this expression.
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@retval EXPRESS_RESULT Return the higher priority express result.
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DisableIf > SuppressIf > GrayOutIf > FALSE
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**/
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EXPRESS_RESULT
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EvaluateExpressionList (
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IN FORM_EXPRESSION_LIST *ExpList,
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IN BOOLEAN Evaluate,
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IN FORM_BROWSER_FORMSET *FormSet, OPTIONAL
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IN FORM_BROWSER_FORM *Form OPTIONAL
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)
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{
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UINTN Index;
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EXPRESS_RESULT ReturnVal;
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EXPRESS_RESULT CompareOne;
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EFI_STATUS Status;
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if (ExpList == NULL) {
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return ExpressFalse;
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}
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ASSERT(ExpList->Signature == FORM_EXPRESSION_LIST_SIGNATURE);
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Index = 0;
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//
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// Check whether need to evaluate the expression first.
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//
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if (Evaluate) {
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while (ExpList->Count > Index) {
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Status = EvaluateExpression (FormSet, Form, ExpList->Expression[Index++]);
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if (EFI_ERROR (Status)) {
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return ExpressFalse;
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}
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}
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}
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//
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// Run the list of expressions.
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//
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ReturnVal = ExpressFalse;
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for (Index = 0; Index < ExpList->Count; Index++) {
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if (ExpList->Expression[Index]->Result.Type == EFI_IFR_TYPE_BOOLEAN &&
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ExpList->Expression[Index]->Result.Value.b) {
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switch (ExpList->Expression[Index]->Type) {
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case EFI_HII_EXPRESSION_SUPPRESS_IF:
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CompareOne = ExpressSuppress;
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break;
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case EFI_HII_EXPRESSION_GRAY_OUT_IF:
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CompareOne = ExpressGrayOut;
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break;
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case EFI_HII_EXPRESSION_DISABLE_IF:
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CompareOne = ExpressDisable;
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break;
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default:
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return ExpressFalse;
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}
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ReturnVal = ReturnVal < CompareOne ? CompareOne : ReturnVal;
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}
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}
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return ReturnVal;
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}
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