2 Utility functions for expression evaluation.
4 Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 // Global stack used to evaluate boolean expresions
20 EFI_HII_VALUE
*mOpCodeScopeStack
= NULL
;
21 EFI_HII_VALUE
*mOpCodeScopeStackEnd
= NULL
;
22 EFI_HII_VALUE
*mOpCodeScopeStackPointer
= NULL
;
24 EFI_HII_VALUE
*mExpressionEvaluationStack
= NULL
;
25 EFI_HII_VALUE
*mExpressionEvaluationStackEnd
= NULL
;
26 EFI_HII_VALUE
*mExpressionEvaluationStackPointer
= NULL
;
27 UINTN mExpressionEvaluationStackOffset
= 0;
29 EFI_HII_VALUE
*mCurrentExpressionStack
= NULL
;
30 EFI_HII_VALUE
*mCurrentExpressionEnd
= NULL
;
31 EFI_HII_VALUE
*mCurrentExpressionPointer
= NULL
;
33 EFI_HII_VALUE
*mMapExpressionListStack
= NULL
;
34 EFI_HII_VALUE
*mMapExpressionListEnd
= NULL
;
35 EFI_HII_VALUE
*mMapExpressionListPointer
= NULL
;
37 FORM_EXPRESSION
**mFormExpressionStack
= NULL
;
38 FORM_EXPRESSION
**mFormExpressionEnd
= NULL
;
39 FORM_EXPRESSION
**mFormExpressionPointer
= NULL
;
41 FORM_EXPRESSION
**mStatementExpressionStack
= NULL
;
42 FORM_EXPRESSION
**mStatementExpressionEnd
= NULL
;
43 FORM_EXPRESSION
**mStatementExpressionPointer
= NULL
;
45 FORM_EXPRESSION
**mOptionExpressionStack
= NULL
;
46 FORM_EXPRESSION
**mOptionExpressionEnd
= NULL
;
47 FORM_EXPRESSION
**mOptionExpressionPointer
= NULL
;
51 // Unicode collation protocol interface
53 EFI_UNICODE_COLLATION_PROTOCOL
*mUnicodeCollation
= NULL
;
54 EFI_USER_MANAGER_PROTOCOL
*mUserManager
= NULL
;
57 Grow size of the stack.
59 This is an internal function.
61 @param Stack On input: old stack; On output: new stack
62 @param StackPtr On input: old stack pointer; On output: new stack
64 @param StackEnd On input: old stack end; On output: new stack end
66 @retval EFI_SUCCESS Grow stack success.
67 @retval EFI_OUT_OF_RESOURCES No enough memory for stack space.
72 IN OUT EFI_HII_VALUE
**Stack
,
73 IN OUT EFI_HII_VALUE
**StackPtr
,
74 IN OUT EFI_HII_VALUE
**StackEnd
78 EFI_HII_VALUE
*NewStack
;
80 Size
= EXPRESSION_STACK_SIZE_INCREMENT
;
81 if (*StackPtr
!= NULL
) {
82 Size
= Size
+ (*StackEnd
- *Stack
);
85 NewStack
= AllocatePool (Size
* sizeof (EFI_HII_VALUE
));
86 if (NewStack
== NULL
) {
87 return EFI_OUT_OF_RESOURCES
;
90 if (*StackPtr
!= NULL
) {
92 // Copy from Old Stack to the New Stack
97 (*StackEnd
- *Stack
) * sizeof (EFI_HII_VALUE
)
101 // Free The Old Stack
107 // Make the Stack pointer point to the old data in the new stack
109 *StackPtr
= NewStack
+ (*StackPtr
- *Stack
);
111 *StackEnd
= NewStack
+ Size
;
118 Push an element onto the Boolean Stack.
120 @param Stack On input: old stack; On output: new stack
121 @param StackPtr On input: old stack pointer; On output: new stack
123 @param StackEnd On input: old stack end; On output: new stack end
124 @param Data Data to push.
126 @retval EFI_SUCCESS Push stack success.
131 IN OUT EFI_HII_VALUE
**Stack
,
132 IN OUT EFI_HII_VALUE
**StackPtr
,
133 IN OUT EFI_HII_VALUE
**StackEnd
,
134 IN EFI_HII_VALUE
*Data
140 // Check for a stack overflow condition
142 if (*StackPtr
>= *StackEnd
) {
146 Status
= GrowStack (Stack
, StackPtr
, StackEnd
);
147 if (EFI_ERROR (Status
)) {
153 // Push the item onto the stack
155 CopyMem (*StackPtr
, Data
, sizeof (EFI_HII_VALUE
));
156 if (Data
->Type
== EFI_IFR_TYPE_BUFFER
) {
157 (*StackPtr
)->Buffer
= AllocateCopyPool(Data
->BufferLen
, Data
->Buffer
);
158 ASSERT ((*StackPtr
)->Buffer
!= NULL
);
161 *StackPtr
= *StackPtr
+ 1;
168 Pop an element from the stack.
170 @param Stack On input: old stack
171 @param StackPtr On input: old stack pointer; On output: new stack pointer
172 @param Data Data to pop.
174 @retval EFI_SUCCESS The value was popped onto the stack.
175 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
180 IN EFI_HII_VALUE
*Stack
,
181 IN OUT EFI_HII_VALUE
**StackPtr
,
182 OUT EFI_HII_VALUE
*Data
186 // Check for a stack underflow condition
188 if (*StackPtr
== Stack
) {
189 return EFI_ACCESS_DENIED
;
193 // Pop the item off the stack
195 *StackPtr
= *StackPtr
- 1;
196 CopyMem (Data
, *StackPtr
, sizeof (EFI_HII_VALUE
));
202 Reset stack pointer to begin of the stack.
206 ResetCurrentExpressionStack (
210 mCurrentExpressionPointer
= mCurrentExpressionStack
;
211 mFormExpressionPointer
= mFormExpressionStack
;
212 mStatementExpressionPointer
= mStatementExpressionStack
;
213 mOptionExpressionPointer
= mOptionExpressionStack
;
218 Push current expression onto the Stack
220 @param Pointer Pointer to current expression.
222 @retval EFI_SUCCESS The value was pushed onto the stack.
223 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
227 PushCurrentExpression (
233 Data
.Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
234 Data
.Value
.u64
= (UINT64
) (UINTN
) Pointer
;
237 &mCurrentExpressionStack
,
238 &mCurrentExpressionPointer
,
239 &mCurrentExpressionEnd
,
246 Pop current expression from the Stack
248 @param Pointer Pointer to current expression to be pop.
250 @retval EFI_SUCCESS The value was pushed onto the stack.
251 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
255 PopCurrentExpression (
263 mCurrentExpressionStack
,
264 &mCurrentExpressionPointer
,
268 *Pointer
= (VOID
*) (UINTN
) Data
.Value
.u64
;
274 Reset stack pointer to begin of the stack.
278 ResetMapExpressionListStack (
282 mMapExpressionListPointer
= mMapExpressionListStack
;
287 Grow size of the stack.
289 This is an internal function.
291 @param Stack On input: old stack; On output: new stack
292 @param StackPtr On input: old stack pointer; On output: new stack
294 @param StackEnd On input: old stack end; On output: new stack end
295 @param MemberSize The stack member size.
297 @retval EFI_SUCCESS Grow stack success.
298 @retval EFI_OUT_OF_RESOURCES No enough memory for stack space.
302 GrowConditionalStack (
303 IN OUT FORM_EXPRESSION
***Stack
,
304 IN OUT FORM_EXPRESSION
***StackPtr
,
305 IN OUT FORM_EXPRESSION
***StackEnd
,
310 FORM_EXPRESSION
**NewStack
;
312 Size
= EXPRESSION_STACK_SIZE_INCREMENT
;
313 if (*StackPtr
!= NULL
) {
314 Size
= Size
+ (*StackEnd
- *Stack
);
317 NewStack
= AllocatePool (Size
* MemberSize
);
318 if (NewStack
== NULL
) {
319 return EFI_OUT_OF_RESOURCES
;
322 if (*StackPtr
!= NULL
) {
324 // Copy from Old Stack to the New Stack
329 (*StackEnd
- *Stack
) * MemberSize
333 // Free The Old Stack
339 // Make the Stack pointer point to the old data in the new stack
341 *StackPtr
= NewStack
+ (*StackPtr
- *Stack
);
343 *StackEnd
= NewStack
+ Size
;
349 Push an element onto the Stack.
351 @param Stack On input: old stack; On output: new stack
352 @param StackPtr On input: old stack pointer; On output: new stack
354 @param StackEnd On input: old stack end; On output: new stack end
355 @param Data Data to push.
357 @retval EFI_SUCCESS Push stack success.
361 PushConditionalStack (
362 IN OUT FORM_EXPRESSION
***Stack
,
363 IN OUT FORM_EXPRESSION
***StackPtr
,
364 IN OUT FORM_EXPRESSION
***StackEnd
,
365 IN FORM_EXPRESSION
**Data
371 // Check for a stack overflow condition
373 if (*StackPtr
>= *StackEnd
) {
377 Status
= GrowConditionalStack (Stack
, StackPtr
, StackEnd
, sizeof (FORM_EXPRESSION
*));
378 if (EFI_ERROR (Status
)) {
384 // Push the item onto the stack
386 CopyMem (*StackPtr
, Data
, sizeof (FORM_EXPRESSION
*));
387 *StackPtr
= *StackPtr
+ 1;
394 Pop an element from the stack.
396 @param Stack On input: old stack
397 @param StackPtr On input: old stack pointer; On output: new stack pointer
398 @param Data Data to pop.
400 @retval EFI_SUCCESS The value was popped onto the stack.
401 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
405 PopConditionalStack (
406 IN FORM_EXPRESSION
**Stack
,
407 IN OUT FORM_EXPRESSION
***StackPtr
,
408 OUT FORM_EXPRESSION
**Data
412 // Check for a stack underflow condition
414 if (*StackPtr
== Stack
) {
415 return EFI_ACCESS_DENIED
;
419 // Pop the item off the stack
421 *StackPtr
= *StackPtr
- 1;
422 CopyMem (Data
, *StackPtr
, sizeof (FORM_EXPRESSION
*));
428 Get the expression list count.
430 @param Level Which type this expression belong to. Form,
433 @retval >=0 The expression count
434 @retval -1 Input parameter error.
438 GetConditionalExpressionCount (
439 IN EXPRESS_LEVEL Level
444 return mFormExpressionPointer
- mFormExpressionStack
;
445 case ExpressStatement
:
446 return mStatementExpressionPointer
- mStatementExpressionStack
;
448 return mOptionExpressionPointer
- mOptionExpressionStack
;
456 Get the expression Buffer pointer.
458 @param Level Which type this expression belong to. Form,
461 @retval The start pointer of the expression buffer or NULL.
465 GetConditionalExpressionList (
466 IN EXPRESS_LEVEL Level
471 return mFormExpressionStack
;
472 case ExpressStatement
:
473 return mStatementExpressionStack
;
475 return mOptionExpressionStack
;
484 Push the expression options onto the Stack.
486 @param Pointer Pointer to the current expression.
487 @param Level Which type this expression belong to. Form,
490 @retval EFI_SUCCESS The value was pushed onto the stack.
491 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
495 PushConditionalExpression (
496 IN FORM_EXPRESSION
*Pointer
,
497 IN EXPRESS_LEVEL Level
502 return PushConditionalStack (
503 &mFormExpressionStack
,
504 &mFormExpressionPointer
,
508 case ExpressStatement
:
509 return PushConditionalStack (
510 &mStatementExpressionStack
,
511 &mStatementExpressionPointer
,
512 &mStatementExpressionEnd
,
516 return PushConditionalStack (
517 &mOptionExpressionStack
,
518 &mOptionExpressionPointer
,
519 &mOptionExpressionEnd
,
524 return EFI_INVALID_PARAMETER
;
529 Pop the expression options from the Stack
531 @param Level Which type this expression belong to. Form,
534 @retval EFI_SUCCESS The value was pushed onto the stack.
535 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
539 PopConditionalExpression (
540 IN EXPRESS_LEVEL Level
543 FORM_EXPRESSION
*Pointer
;
547 return PopConditionalStack (
548 mFormExpressionStack
,
549 &mFormExpressionPointer
,
553 case ExpressStatement
:
554 return PopConditionalStack (
555 mStatementExpressionStack
,
556 &mStatementExpressionPointer
,
561 return PopConditionalStack (
562 mOptionExpressionStack
,
563 &mOptionExpressionPointer
,
569 return EFI_INVALID_PARAMETER
;
575 Push the list of map expression onto the Stack
577 @param Pointer Pointer to the list of map expression to be pushed.
579 @retval EFI_SUCCESS The value was pushed onto the stack.
580 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
584 PushMapExpressionList (
590 Data
.Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
591 Data
.Value
.u64
= (UINT64
) (UINTN
) Pointer
;
594 &mMapExpressionListStack
,
595 &mMapExpressionListPointer
,
596 &mMapExpressionListEnd
,
603 Pop the list of map expression from the Stack
605 @param Pointer Pointer to the list of map expression to be pop.
607 @retval EFI_SUCCESS The value was pushed onto the stack.
608 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
612 PopMapExpressionList (
620 mMapExpressionListStack
,
621 &mMapExpressionListPointer
,
625 *Pointer
= (VOID
*) (UINTN
) Data
.Value
.u64
;
631 Reset stack pointer to begin of the stack.
639 mOpCodeScopeStackPointer
= mOpCodeScopeStack
;
644 Push an Operand onto the Stack
646 @param Operand Operand to push.
648 @retval EFI_SUCCESS The value was pushed onto the stack.
649 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
660 Data
.Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
661 Data
.Value
.u8
= Operand
;
665 &mOpCodeScopeStackPointer
,
666 &mOpCodeScopeStackEnd
,
673 Pop an Operand from the Stack
675 @param Operand Operand to pop.
677 @retval EFI_SUCCESS The value was pushed onto the stack.
678 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
692 &mOpCodeScopeStackPointer
,
696 *Operand
= Data
.Value
.u8
;
703 Push an Expression value onto the Stack
705 @param Value Expression value to push.
707 @retval EFI_SUCCESS The value was pushed onto the stack.
708 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
714 IN EFI_HII_VALUE
*Value
718 &mExpressionEvaluationStack
,
719 &mExpressionEvaluationStackPointer
,
720 &mExpressionEvaluationStackEnd
,
727 Pop an Expression value from the stack.
729 @param Value Expression value to pop.
731 @retval EFI_SUCCESS The value was popped onto the stack.
732 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
737 OUT EFI_HII_VALUE
*Value
741 mExpressionEvaluationStack
+ mExpressionEvaluationStackOffset
,
742 &mExpressionEvaluationStackPointer
,
748 Get current stack offset from stack start.
750 @return Stack offset to stack start.
753 SaveExpressionEvaluationStackOffset (
756 UINTN TempStackOffset
;
757 TempStackOffset
= mExpressionEvaluationStackOffset
;
758 mExpressionEvaluationStackOffset
= mExpressionEvaluationStackPointer
- mExpressionEvaluationStack
;
759 return TempStackOffset
;
763 Restore stack offset based on input stack offset
765 @param StackOffset Offset to stack start.
769 RestoreExpressionEvaluationStackOffset (
773 mExpressionEvaluationStackOffset
= StackOffset
;
777 Get Form given its FormId.
779 @param FormSet The formset which contains this form.
780 @param FormId Id of this form.
782 @retval Pointer The form.
783 @retval NULL Specified Form is not found in the formset.
788 IN FORM_BROWSER_FORMSET
*FormSet
,
793 FORM_BROWSER_FORM
*Form
;
795 Link
= GetFirstNode (&FormSet
->FormListHead
);
796 while (!IsNull (&FormSet
->FormListHead
, Link
)) {
797 Form
= FORM_BROWSER_FORM_FROM_LINK (Link
);
799 if (Form
->FormId
== FormId
) {
803 Link
= GetNextNode (&FormSet
->FormListHead
, Link
);
811 Search a Question in Form scope using its QuestionId.
813 @param Form The form which contains this Question.
814 @param QuestionId Id of this Question.
816 @retval Pointer The Question.
817 @retval NULL Specified Question not found in the form.
820 FORM_BROWSER_STATEMENT
*
822 IN FORM_BROWSER_FORM
*Form
,
827 FORM_BROWSER_STATEMENT
*Question
;
829 if (QuestionId
== 0 || Form
== NULL
) {
831 // The value of zero is reserved
836 Link
= GetFirstNode (&Form
->StatementListHead
);
837 while (!IsNull (&Form
->StatementListHead
, Link
)) {
838 Question
= FORM_BROWSER_STATEMENT_FROM_LINK (Link
);
840 if (Question
->QuestionId
== QuestionId
) {
844 Link
= GetNextNode (&Form
->StatementListHead
, Link
);
852 Search a Question in Formset scope using its QuestionId.
854 @param FormSet The formset which contains this form.
855 @param Form The form which contains this Question.
856 @param QuestionId Id of this Question.
858 @retval Pointer The Question.
859 @retval NULL Specified Question not found in the form.
862 FORM_BROWSER_STATEMENT
*
864 IN FORM_BROWSER_FORMSET
*FormSet
,
865 IN FORM_BROWSER_FORM
*Form
,
870 FORM_BROWSER_STATEMENT
*Question
;
873 // Search in the form scope first
875 Question
= IdToQuestion2 (Form
, QuestionId
);
876 if (Question
!= NULL
) {
881 // Search in the formset scope
883 Link
= GetFirstNode (&FormSet
->FormListHead
);
884 while (!IsNull (&FormSet
->FormListHead
, Link
)) {
885 Form
= FORM_BROWSER_FORM_FROM_LINK (Link
);
887 Question
= IdToQuestion2 (Form
, QuestionId
);
888 if (Question
!= NULL
) {
890 // EFI variable storage may be updated by Callback() asynchronous,
891 // to keep synchronous, always reload the Question Value.
893 if (Question
->Storage
->Type
== EFI_HII_VARSTORE_EFI_VARIABLE
) {
894 GetQuestionValue (FormSet
, Form
, Question
, GetSetValueWithHiiDriver
);
900 Link
= GetNextNode (&FormSet
->FormListHead
, Link
);
908 Get Expression given its RuleId.
910 @param Form The form which contains this Expression.
911 @param RuleId Id of this Expression.
913 @retval Pointer The Expression.
914 @retval NULL Specified Expression not found in the form.
919 IN FORM_BROWSER_FORM
*Form
,
924 FORM_EXPRESSION
*Expression
;
926 Link
= GetFirstNode (&Form
->ExpressionListHead
);
927 while (!IsNull (&Form
->ExpressionListHead
, Link
)) {
928 Expression
= FORM_EXPRESSION_FROM_LINK (Link
);
930 if (Expression
->Type
== EFI_HII_EXPRESSION_RULE
&& Expression
->RuleId
== RuleId
) {
934 Link
= GetNextNode (&Form
->ExpressionListHead
, Link
);
942 Locate the Unicode Collation Protocol interface for later use.
944 @retval EFI_SUCCESS Protocol interface initialize success.
945 @retval Other Protocol interface initialize failed.
949 InitializeUnicodeCollationProtocol (
955 if (mUnicodeCollation
!= NULL
) {
960 // BUGBUG: Proper impelmentation is to locate all Unicode Collation Protocol
961 // instances first and then select one which support English language.
962 // Current implementation just pick the first instance.
964 Status
= gBS
->LocateProtocol (
965 &gEfiUnicodeCollation2ProtocolGuid
,
967 (VOID
**) &mUnicodeCollation
973 Convert the input Unicode character to upper.
975 @param String Th Unicode character to be converted.
983 while (*String
!= 0) {
984 if ((*String
>= 'a') && (*String
<= 'z')) {
985 *String
= (UINT16
) ((*String
) & ((UINT16
) ~0x20));
992 Check whether this value type can be transfer to EFI_IFR_TYPE_BUFFER type.
994 EFI_IFR_TYPE_REF, EFI_IFR_TYPE_DATE and EFI_IFR_TYPE_TIME are converted to
995 EFI_IFR_TYPE_BUFFER when do the value compare.
997 @param Value Expression value to compare on.
999 @retval TRUE This value type can be transter to EFI_IFR_TYPE_BUFFER type.
1000 @retval FALSE This value type can't be transter to EFI_IFR_TYPE_BUFFER type.
1005 IN EFI_HII_VALUE
*Value
1008 switch (Value
->Type
) {
1009 case EFI_IFR_TYPE_BUFFER
:
1010 case EFI_IFR_TYPE_DATE
:
1011 case EFI_IFR_TYPE_TIME
:
1012 case EFI_IFR_TYPE_REF
:
1021 Check whether this value type can be transfer to EFI_IFR_TYPE_UINT64
1023 @param Value Expression value to compare on.
1025 @retval TRUE This value type can be transter to EFI_IFR_TYPE_BUFFER type.
1026 @retval FALSE This value type can't be transter to EFI_IFR_TYPE_BUFFER type.
1031 IN EFI_HII_VALUE
*Value
1034 switch (Value
->Type
) {
1035 case EFI_IFR_TYPE_NUM_SIZE_8
:
1036 case EFI_IFR_TYPE_NUM_SIZE_16
:
1037 case EFI_IFR_TYPE_NUM_SIZE_32
:
1038 case EFI_IFR_TYPE_NUM_SIZE_64
:
1039 case EFI_IFR_TYPE_BOOLEAN
:
1048 Return the buffer length for this value.
1050 EFI_IFR_TYPE_REF, EFI_IFR_TYPE_DATE and EFI_IFR_TYPE_TIME are converted to
1051 EFI_IFR_TYPE_BUFFER when do the value compare.
1053 @param Value Expression value to compare on.
1055 @retval BufLen Return the buffer length.
1060 IN EFI_HII_VALUE
*Value
1063 switch (Value
->Type
) {
1064 case EFI_IFR_TYPE_BUFFER
:
1065 return Value
->BufferLen
;
1067 case EFI_IFR_TYPE_DATE
:
1068 return (UINT16
) sizeof (EFI_HII_DATE
);
1070 case EFI_IFR_TYPE_TIME
:
1071 return (UINT16
) sizeof (EFI_HII_TIME
);
1073 case EFI_IFR_TYPE_REF
:
1074 return (UINT16
) sizeof (EFI_HII_REF
);
1082 Return the buffer pointer for this value.
1084 EFI_IFR_TYPE_REF, EFI_IFR_TYPE_DATE and EFI_IFR_TYPE_TIME are converted to
1085 EFI_IFR_TYPE_BUFFER when do the value compare.
1087 @param Value Expression value to compare on.
1089 @retval Buf Return the buffer pointer.
1094 IN EFI_HII_VALUE
*Value
1097 switch (Value
->Type
) {
1098 case EFI_IFR_TYPE_BUFFER
:
1099 return Value
->Buffer
;
1101 case EFI_IFR_TYPE_DATE
:
1102 return (UINT8
*) (&Value
->Value
.date
);
1104 case EFI_IFR_TYPE_TIME
:
1105 return (UINT8
*) (&Value
->Value
.time
);
1107 case EFI_IFR_TYPE_REF
:
1108 return (UINT8
*) (&Value
->Value
.ref
);
1116 Evaluate opcode EFI_IFR_TO_STRING.
1118 @param FormSet Formset which contains this opcode.
1119 @param Format String format in EFI_IFR_TO_STRING.
1120 @param Result Evaluation result for this opcode.
1122 @retval EFI_SUCCESS Opcode evaluation success.
1123 @retval Other Opcode evaluation failed.
1128 IN FORM_BROWSER_FORMSET
*FormSet
,
1130 OUT EFI_HII_VALUE
*Result
1134 EFI_HII_VALUE Value
;
1136 CHAR16
*PrintFormat
;
1137 CHAR16 Buffer
[MAXIMUM_VALUE_CHARACTERS
];
1143 Status
= PopExpression (&Value
);
1144 if (EFI_ERROR (Status
)) {
1148 switch (Value
.Type
) {
1149 case EFI_IFR_TYPE_NUM_SIZE_8
:
1150 case EFI_IFR_TYPE_NUM_SIZE_16
:
1151 case EFI_IFR_TYPE_NUM_SIZE_32
:
1152 case EFI_IFR_TYPE_NUM_SIZE_64
:
1153 BufferSize
= MAXIMUM_VALUE_CHARACTERS
* sizeof (CHAR16
);
1155 case EFI_IFR_STRING_UNSIGNED_DEC
:
1156 case EFI_IFR_STRING_SIGNED_DEC
:
1157 PrintFormat
= L
"%ld";
1160 case EFI_IFR_STRING_LOWERCASE_HEX
:
1161 PrintFormat
= L
"%lx";
1164 case EFI_IFR_STRING_UPPERCASE_HEX
:
1165 PrintFormat
= L
"%lX";
1169 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1172 UnicodeSPrint (Buffer
, BufferSize
, PrintFormat
, Value
.Value
.u64
);
1176 case EFI_IFR_TYPE_STRING
:
1177 CopyMem (Result
, &Value
, sizeof (EFI_HII_VALUE
));
1180 case EFI_IFR_TYPE_BOOLEAN
:
1181 String
= (Value
.Value
.b
) ? L
"True" : L
"False";
1184 case EFI_IFR_TYPE_BUFFER
:
1185 case EFI_IFR_TYPE_DATE
:
1186 case EFI_IFR_TYPE_TIME
:
1187 case EFI_IFR_TYPE_REF
:
1189 // + 3 is base on the unicode format, the length may be odd number,
1190 // so need 1 byte to align, also need 2 bytes for L'\0'.
1192 if (Value
.Type
== EFI_IFR_TYPE_BUFFER
) {
1193 SrcLen
= Value
.BufferLen
;
1194 SrcBuf
= Value
.Buffer
;
1196 SrcBuf
= GetBufferForValue(&Value
);
1197 SrcLen
= GetLengthForValue(&Value
);
1200 TmpBuf
= AllocateZeroPool (SrcLen
+ 3);
1201 ASSERT (TmpBuf
!= NULL
);
1202 if (Format
== EFI_IFR_STRING_ASCII
) {
1203 CopyMem (TmpBuf
, SrcBuf
, SrcLen
);
1204 PrintFormat
= L
"%a";
1206 // Format == EFI_IFR_STRING_UNICODE
1207 CopyMem (TmpBuf
, SrcBuf
, SrcLen
* sizeof (CHAR16
));
1208 PrintFormat
= L
"%s";
1210 UnicodeSPrint (Buffer
, sizeof (Buffer
), PrintFormat
, TmpBuf
);
1213 if (Value
.Type
== EFI_IFR_TYPE_BUFFER
) {
1214 FreePool (Value
.Buffer
);
1219 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1223 Result
->Type
= EFI_IFR_TYPE_STRING
;
1224 Result
->Value
.string
= NewString (String
, FormSet
->HiiHandle
);
1230 Evaluate opcode EFI_IFR_TO_UINT.
1232 @param FormSet Formset which contains this opcode.
1233 @param Result Evaluation result for this opcode.
1235 @retval EFI_SUCCESS Opcode evaluation success.
1236 @retval Other Opcode evaluation failed.
1241 IN FORM_BROWSER_FORMSET
*FormSet
,
1242 OUT EFI_HII_VALUE
*Result
1246 EFI_HII_VALUE Value
;
1250 Status
= PopExpression (&Value
);
1251 if (EFI_ERROR (Status
)) {
1255 if (Value
.Type
>= EFI_IFR_TYPE_OTHER
&& !IsTypeInBuffer(&Value
)) {
1256 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1260 Status
= EFI_SUCCESS
;
1261 if (Value
.Type
== EFI_IFR_TYPE_STRING
) {
1262 String
= GetToken (Value
.Value
.string
, FormSet
->HiiHandle
);
1263 if (String
== NULL
) {
1264 return EFI_NOT_FOUND
;
1267 IfrStrToUpper (String
);
1268 StringPtr
= StrStr (String
, L
"0X");
1269 if (StringPtr
!= NULL
) {
1273 Result
->Value
.u64
= StrHexToUint64 (String
);
1278 Result
->Value
.u64
= StrDecimalToUint64 (String
);
1281 } else if (IsTypeInBuffer(&Value
)) {
1282 if (GetLengthForValue (&Value
) > 8) {
1283 if (Value
.Type
== EFI_IFR_TYPE_BUFFER
) {
1284 FreePool (Value
.Buffer
);
1286 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1289 Result
->Value
.u64
= *(UINT64
*) GetBufferForValue (&Value
);
1290 if (Value
.Type
== EFI_IFR_TYPE_BUFFER
) {
1291 FreePool (Value
.Buffer
);
1294 CopyMem (Result
, &Value
, sizeof (EFI_HII_VALUE
));
1297 Result
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
1303 Evaluate opcode EFI_IFR_CATENATE.
1305 @param FormSet Formset which contains this opcode.
1306 @param Result Evaluation result for this opcode.
1308 @retval EFI_SUCCESS Opcode evaluation success.
1309 @retval Other Opcode evaluation failed.
1314 IN FORM_BROWSER_FORMSET
*FormSet
,
1315 OUT EFI_HII_VALUE
*Result
1319 EFI_HII_VALUE Value
[2];
1330 // String[0] - The second string
1331 // String[1] - The first string
1336 Status
= EFI_SUCCESS
;
1337 ZeroMem (Value
, sizeof (Value
));
1339 Status
= PopExpression (&Value
[0]);
1340 if (EFI_ERROR (Status
)) {
1344 Status
= PopExpression (&Value
[1]);
1345 if (EFI_ERROR (Status
)) {
1349 for (Index
= 0; Index
< 2; Index
++) {
1350 if (Value
[Index
].Type
!= EFI_IFR_TYPE_STRING
&& !IsTypeInBuffer(&Value
[Index
])) {
1351 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1352 Status
= EFI_SUCCESS
;
1356 if (Value
[Index
].Type
== EFI_IFR_TYPE_STRING
) {
1357 String
[Index
] = GetToken (Value
[Index
].Value
.string
, FormSet
->HiiHandle
);
1358 if (String
[Index
] == NULL
) {
1359 Status
= EFI_NOT_FOUND
;
1365 if (Value
[0].Type
== EFI_IFR_TYPE_STRING
) {
1366 Size
= StrSize (String
[0]);
1367 MaxLen
= (StrSize (String
[1]) + Size
) / sizeof (CHAR16
);
1368 StringPtr
= AllocatePool (MaxLen
* sizeof (CHAR16
));
1369 ASSERT (StringPtr
!= NULL
);
1370 StrCpyS (StringPtr
, MaxLen
, String
[1]);
1371 StrCatS (StringPtr
, MaxLen
, String
[0]);
1373 Result
->Type
= EFI_IFR_TYPE_STRING
;
1374 Result
->Value
.string
= NewString (StringPtr
, FormSet
->HiiHandle
);
1376 Result
->Type
= EFI_IFR_TYPE_BUFFER
;
1377 Length0
= GetLengthForValue(&Value
[0]);
1378 Length1
= GetLengthForValue(&Value
[1]);
1379 Result
->BufferLen
= (UINT16
) (Length0
+ Length1
);
1381 Result
->Buffer
= AllocateZeroPool (Result
->BufferLen
);
1382 ASSERT (Result
->Buffer
!= NULL
);
1384 TmpBuf
= GetBufferForValue(&Value
[0]);
1385 ASSERT (TmpBuf
!= NULL
);
1386 CopyMem (Result
->Buffer
, TmpBuf
, Length0
);
1387 TmpBuf
= GetBufferForValue(&Value
[1]);
1388 ASSERT (TmpBuf
!= NULL
);
1389 CopyMem (&Result
->Buffer
[Length0
], TmpBuf
, Length1
);
1392 if (Value
[0].Buffer
!= NULL
) {
1393 FreePool (Value
[0].Buffer
);
1395 if (Value
[1].Buffer
!= NULL
) {
1396 FreePool (Value
[1].Buffer
);
1398 if (String
[0] != NULL
) {
1399 FreePool (String
[0]);
1401 if (String
[1] != NULL
) {
1402 FreePool (String
[1]);
1404 if (StringPtr
!= NULL
) {
1405 FreePool (StringPtr
);
1413 Evaluate opcode EFI_IFR_MATCH.
1415 @param FormSet Formset which contains this opcode.
1416 @param Result Evaluation result for this opcode.
1418 @retval EFI_SUCCESS Opcode evaluation success.
1419 @retval Other Opcode evaluation failed.
1424 IN FORM_BROWSER_FORMSET
*FormSet
,
1425 OUT EFI_HII_VALUE
*Result
1429 EFI_HII_VALUE Value
[2];
1434 // String[0] - The string to search
1435 // String[1] - pattern
1439 Status
= EFI_SUCCESS
;
1440 ZeroMem (Value
, sizeof (Value
));
1442 Status
= PopExpression (&Value
[0]);
1443 if (EFI_ERROR (Status
)) {
1447 Status
= PopExpression (&Value
[1]);
1448 if (EFI_ERROR (Status
)) {
1452 for (Index
= 0; Index
< 2; Index
++) {
1453 if (Value
[Index
].Type
!= EFI_IFR_TYPE_STRING
) {
1454 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1455 Status
= EFI_SUCCESS
;
1459 String
[Index
] = GetToken (Value
[Index
].Value
.string
, FormSet
->HiiHandle
);
1460 if (String
[Index
] == NULL
) {
1461 Status
= EFI_NOT_FOUND
;
1466 Result
->Type
= EFI_IFR_TYPE_BOOLEAN
;
1467 Result
->Value
.b
= mUnicodeCollation
->MetaiMatch (mUnicodeCollation
, String
[0], String
[1]);
1470 if (String
[0] != NULL
) {
1471 FreePool (String
[0]);
1473 if (String
[1] != NULL
) {
1474 FreePool (String
[1]);
1481 Evaluate opcode EFI_IFR_MATCH2.
1483 @param FormSet Formset which contains this opcode.
1484 @param SyntaxType Syntax type for match2.
1485 @param Result Evaluation result for this opcode.
1487 @retval EFI_SUCCESS Opcode evaluation success.
1488 @retval Other Opcode evaluation failed.
1493 IN FORM_BROWSER_FORMSET
*FormSet
,
1494 IN EFI_GUID
*SyntaxType
,
1495 OUT EFI_HII_VALUE
*Result
1499 EFI_HII_VALUE Value
[2];
1503 EFI_HANDLE
*HandleBuffer
;
1505 EFI_REGULAR_EXPRESSION_PROTOCOL
*RegularExpressionProtocol
;
1506 UINTN RegExSyntaxTypeListSize
;
1507 EFI_REGEX_SYNTAX_TYPE
*RegExSyntaxTypeList
;
1508 UINTN CapturesCount
;
1511 // String[0] - The string to search
1512 // String[1] - pattern
1516 HandleBuffer
= NULL
;
1517 RegExSyntaxTypeList
= NULL
;
1518 Status
= EFI_SUCCESS
;
1519 ZeroMem (Value
, sizeof (Value
));
1521 Status
= PopExpression (&Value
[0]);
1522 if (EFI_ERROR (Status
)) {
1526 Status
= PopExpression (&Value
[1]);
1527 if (EFI_ERROR (Status
)) {
1531 for (Index
= 0; Index
< 2; Index
++) {
1532 if (Value
[Index
].Type
!= EFI_IFR_TYPE_STRING
) {
1533 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1534 Status
= EFI_SUCCESS
;
1538 String
[Index
] = GetToken (Value
[Index
].Value
.string
, FormSet
->HiiHandle
);
1539 if (String
[Index
] == NULL
) {
1540 Status
= EFI_NOT_FOUND
;
1546 HandleBuffer
= NULL
;
1547 Status
= gBS
->LocateHandle(
1549 &gEfiRegularExpressionProtocolGuid
,
1553 if (Status
== EFI_BUFFER_TOO_SMALL
) {
1554 HandleBuffer
= AllocateZeroPool(BufferSize
);
1555 if (HandleBuffer
== NULL
) {
1556 Status
= EFI_OUT_OF_RESOURCES
;
1559 Status
= gBS
->LocateHandle(
1561 &gEfiRegularExpressionProtocolGuid
,
1568 if (EFI_ERROR (Status
)) {
1569 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1570 Status
= EFI_SUCCESS
;
1574 ASSERT (HandleBuffer
!= NULL
);
1575 for ( Index
= 0; Index
< BufferSize
/ sizeof(EFI_HANDLE
); Index
++) {
1576 Status
= gBS
->HandleProtocol (
1577 HandleBuffer
[Index
],
1578 &gEfiRegularExpressionProtocolGuid
,
1579 (VOID
**)&RegularExpressionProtocol
1581 if (EFI_ERROR (Status
)) {
1585 RegExSyntaxTypeListSize
= 0;
1586 RegExSyntaxTypeList
= NULL
;
1588 Status
= RegularExpressionProtocol
->GetInfo (
1589 RegularExpressionProtocol
,
1590 &RegExSyntaxTypeListSize
,
1593 if (Status
== EFI_BUFFER_TOO_SMALL
) {
1594 RegExSyntaxTypeList
= AllocateZeroPool(RegExSyntaxTypeListSize
);
1595 if (RegExSyntaxTypeList
== NULL
) {
1596 Status
= EFI_OUT_OF_RESOURCES
;
1599 Status
= RegularExpressionProtocol
->GetInfo (
1600 RegularExpressionProtocol
,
1601 &RegExSyntaxTypeListSize
,
1604 } else if (EFI_ERROR (Status
)) {
1608 for (GuidIndex
= 0; GuidIndex
< RegExSyntaxTypeListSize
/ sizeof(EFI_GUID
); GuidIndex
++) {
1609 if (CompareGuid (&RegExSyntaxTypeList
[GuidIndex
], SyntaxType
)) {
1611 // Find the match type, return the value.
1613 Result
->Type
= EFI_IFR_TYPE_BOOLEAN
;
1614 Status
= RegularExpressionProtocol
->MatchString (
1615 RegularExpressionProtocol
,
1627 if (RegExSyntaxTypeList
!= NULL
) {
1628 FreePool (RegExSyntaxTypeList
);
1633 // Type specified by SyntaxType is not supported
1634 // in any of the EFI_REGULAR_EXPRESSION_PROTOCOL instances.
1636 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1637 Status
= EFI_SUCCESS
;
1640 if (String
[0] != NULL
) {
1641 FreePool (String
[0]);
1643 if (String
[1] != NULL
) {
1644 FreePool (String
[1]);
1646 if (RegExSyntaxTypeList
!= NULL
) {
1647 FreePool (RegExSyntaxTypeList
);
1649 if (HandleBuffer
!= NULL
) {
1650 FreePool (HandleBuffer
);
1656 Evaluate opcode EFI_IFR_FIND.
1658 @param FormSet Formset which contains this opcode.
1659 @param Format Case sensitive or insensitive.
1660 @param Result Evaluation result for this opcode.
1662 @retval EFI_SUCCESS Opcode evaluation success.
1663 @retval Other Opcode evaluation failed.
1668 IN FORM_BROWSER_FORMSET
*FormSet
,
1670 OUT EFI_HII_VALUE
*Result
1674 EFI_HII_VALUE Value
[3];
1680 ZeroMem (Value
, sizeof (Value
));
1682 if (Format
> EFI_IFR_FF_CASE_INSENSITIVE
) {
1683 return EFI_INVALID_PARAMETER
;
1686 Status
= PopExpression (&Value
[0]);
1687 if (EFI_ERROR (Status
)) {
1691 Status
= PopExpression (&Value
[1]);
1692 if (EFI_ERROR (Status
)) {
1696 Status
= PopExpression (&Value
[2]);
1697 if (EFI_ERROR (Status
)) {
1701 if (Value
[0].Type
> EFI_IFR_TYPE_NUM_SIZE_64
) {
1702 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1705 Base
= (UINTN
) Value
[0].Value
.u64
;
1708 // String[0] - sub-string
1709 // String[1] - The string to search
1713 for (Index
= 0; Index
< 2; Index
++) {
1714 if (Value
[Index
+ 1].Type
!= EFI_IFR_TYPE_STRING
) {
1715 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1716 Status
= EFI_SUCCESS
;
1720 String
[Index
] = GetToken (Value
[Index
+ 1].Value
.string
, FormSet
->HiiHandle
);
1721 if (String
[Index
] == NULL
) {
1722 Status
= EFI_NOT_FOUND
;
1726 if (Format
== EFI_IFR_FF_CASE_INSENSITIVE
) {
1728 // Case insensitive, convert both string to upper case
1730 IfrStrToUpper (String
[Index
]);
1734 Result
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
1735 if (Base
>= StrLen (String
[1])) {
1736 Result
->Value
.u64
= 0xFFFFFFFFFFFFFFFFULL
;
1738 StringPtr
= StrStr (String
[1] + Base
, String
[0]);
1739 Result
->Value
.u64
= (StringPtr
== NULL
) ? 0xFFFFFFFFFFFFFFFFULL
: (StringPtr
- String
[1]);
1743 if (String
[0] != NULL
) {
1744 FreePool (String
[0]);
1746 if (String
[1] != NULL
) {
1747 FreePool (String
[1]);
1755 Evaluate opcode EFI_IFR_MID.
1757 @param FormSet Formset which contains this opcode.
1758 @param Result Evaluation result for this opcode.
1760 @retval EFI_SUCCESS Opcode evaluation success.
1761 @retval Other Opcode evaluation failed.
1766 IN FORM_BROWSER_FORMSET
*FormSet
,
1767 OUT EFI_HII_VALUE
*Result
1771 EFI_HII_VALUE Value
[3];
1779 ZeroMem (Value
, sizeof (Value
));
1781 Status
= PopExpression (&Value
[0]);
1782 if (EFI_ERROR (Status
)) {
1786 Status
= PopExpression (&Value
[1]);
1787 if (EFI_ERROR (Status
)) {
1791 Status
= PopExpression (&Value
[2]);
1792 if (EFI_ERROR (Status
)) {
1796 if (Value
[0].Type
> EFI_IFR_TYPE_NUM_SIZE_64
) {
1797 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1800 Length
= (UINTN
) Value
[0].Value
.u64
;
1802 if (Value
[1].Type
> EFI_IFR_TYPE_NUM_SIZE_64
) {
1803 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1806 Base
= (UINTN
) Value
[1].Value
.u64
;
1808 if (Value
[2].Type
!= EFI_IFR_TYPE_STRING
&& !IsTypeInBuffer(&Value
[2])) {
1809 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1812 if (Value
[2].Type
== EFI_IFR_TYPE_STRING
) {
1813 String
= GetToken (Value
[2].Value
.string
, FormSet
->HiiHandle
);
1814 if (String
== NULL
) {
1815 return EFI_NOT_FOUND
;
1818 if (Length
== 0 || Base
>= StrLen (String
)) {
1819 SubString
= gEmptyString
;
1821 SubString
= String
+ Base
;
1822 if ((Base
+ Length
) < StrLen (String
)) {
1823 SubString
[Length
] = L
'\0';
1827 Result
->Type
= EFI_IFR_TYPE_STRING
;
1828 Result
->Value
.string
= NewString (SubString
, FormSet
->HiiHandle
);
1832 BufferLen
= GetLengthForValue (&Value
[2]);
1833 Buffer
= GetBufferForValue (&Value
[2]);
1835 Result
->Type
= EFI_IFR_TYPE_BUFFER
;
1836 if (Length
== 0 || Base
>= BufferLen
) {
1837 Result
->BufferLen
= 0;
1838 Result
->Buffer
= NULL
;
1840 Result
->BufferLen
= (UINT16
)((BufferLen
- Base
) < Length
? (BufferLen
- Base
) : Length
);
1841 Result
->Buffer
= AllocateZeroPool (Result
->BufferLen
);
1842 ASSERT (Result
->Buffer
!= NULL
);
1843 CopyMem (Result
->Buffer
, &Buffer
[Base
], Result
->BufferLen
);
1846 if (Value
[2].Type
== EFI_IFR_TYPE_BUFFER
) {
1847 FreePool (Value
[2].Buffer
);
1856 Evaluate opcode EFI_IFR_TOKEN.
1858 @param FormSet Formset which contains this opcode.
1859 @param Result Evaluation result for this opcode.
1861 @retval EFI_SUCCESS Opcode evaluation success.
1862 @retval Other Opcode evaluation failed.
1867 IN FORM_BROWSER_FORMSET
*FormSet
,
1868 OUT EFI_HII_VALUE
*Result
1872 EFI_HII_VALUE Value
[3];
1880 ZeroMem (Value
, sizeof (Value
));
1882 Status
= PopExpression (&Value
[0]);
1883 if (EFI_ERROR (Status
)) {
1887 Status
= PopExpression (&Value
[1]);
1888 if (EFI_ERROR (Status
)) {
1892 Status
= PopExpression (&Value
[2]);
1893 if (EFI_ERROR (Status
)) {
1897 if (Value
[0].Type
> EFI_IFR_TYPE_NUM_SIZE_64
) {
1898 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1901 Count
= (UINTN
) Value
[0].Value
.u64
;
1904 // String[0] - Delimiter
1905 // String[1] - The string to search
1909 for (Index
= 0; Index
< 2; Index
++) {
1910 if (Value
[Index
+ 1].Type
!= EFI_IFR_TYPE_STRING
) {
1911 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
1912 Status
= EFI_SUCCESS
;
1916 String
[Index
] = GetToken (Value
[Index
+ 1].Value
.string
, FormSet
->HiiHandle
);
1917 if (String
[Index
] == NULL
) {
1918 Status
= EFI_NOT_FOUND
;
1923 Delimiter
= String
[0];
1924 SubString
= String
[1];
1926 SubString
= StrStr (SubString
, Delimiter
);
1927 if (SubString
!= NULL
) {
1929 // Skip over the delimiter
1931 SubString
= SubString
+ StrLen (Delimiter
);
1938 if (SubString
== NULL
) {
1940 // nth delimited sub-string not found, push an empty string
1942 SubString
= gEmptyString
;
1945 // Put a NULL terminator for nth delimited sub-string
1947 StringPtr
= StrStr (SubString
, Delimiter
);
1948 if (StringPtr
!= NULL
) {
1953 Result
->Type
= EFI_IFR_TYPE_STRING
;
1954 Result
->Value
.string
= NewString (SubString
, FormSet
->HiiHandle
);
1957 if (String
[0] != NULL
) {
1958 FreePool (String
[0]);
1960 if (String
[1] != NULL
) {
1961 FreePool (String
[1]);
1969 Evaluate opcode EFI_IFR_SPAN.
1971 @param FormSet Formset which contains this opcode.
1972 @param Flags FIRST_MATCHING or FIRST_NON_MATCHING.
1973 @param Result Evaluation result for this opcode.
1975 @retval EFI_SUCCESS Opcode evaluation success.
1976 @retval Other Opcode evaluation failed.
1981 IN FORM_BROWSER_FORMSET
*FormSet
,
1983 OUT EFI_HII_VALUE
*Result
1987 EFI_HII_VALUE Value
[3];
1995 ZeroMem (Value
, sizeof (Value
));
1997 Status
= PopExpression (&Value
[0]);
1998 if (EFI_ERROR (Status
)) {
2002 Status
= PopExpression (&Value
[1]);
2003 if (EFI_ERROR (Status
)) {
2007 Status
= PopExpression (&Value
[2]);
2008 if (EFI_ERROR (Status
)) {
2012 if (Value
[0].Type
> EFI_IFR_TYPE_NUM_SIZE_64
) {
2013 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2016 Base
= (UINTN
) Value
[0].Value
.u64
;
2019 // String[0] - Charset
2020 // String[1] - The string to search
2024 for (Index
= 0; Index
< 2; Index
++) {
2025 if (Value
[Index
+ 1].Type
!= EFI_IFR_TYPE_STRING
) {
2026 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2027 Status
= EFI_SUCCESS
;
2031 String
[Index
] = GetToken (Value
[Index
+ 1].Value
.string
, FormSet
->HiiHandle
);
2032 if (String
[Index
] == NULL
) {
2033 Status
= EFI_NOT_FOUND
;
2038 if (Base
>= StrLen (String
[1])) {
2039 Result
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2040 Status
= EFI_SUCCESS
;
2045 StringPtr
= String
[1] + Base
;
2046 Charset
= String
[0];
2047 while (*StringPtr
!= 0 && !Found
) {
2049 while (Charset
[Index
] != 0) {
2050 if (*StringPtr
>= Charset
[Index
] && *StringPtr
<= Charset
[Index
+ 1]) {
2051 if (Flags
== EFI_IFR_FLAGS_FIRST_MATCHING
) {
2056 if (Flags
== EFI_IFR_FLAGS_FIRST_NON_MATCHING
) {
2062 // Skip characters pair representing low-end of a range and high-end of a range
2072 Result
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
2073 Result
->Value
.u64
= StringPtr
- String
[1];
2076 if (String
[0] != NULL
) {
2077 FreePool (String
[0]);
2079 if (String
[1] != NULL
) {
2080 FreePool (String
[1]);
2088 Zero extend integer/boolean/date/time to UINT64 for comparing.
2090 @param Value HII Value to be converted.
2095 IN EFI_HII_VALUE
*Value
2101 switch (Value
->Type
) {
2102 case EFI_IFR_TYPE_NUM_SIZE_8
:
2103 Temp
= Value
->Value
.u8
;
2106 case EFI_IFR_TYPE_NUM_SIZE_16
:
2107 Temp
= Value
->Value
.u16
;
2110 case EFI_IFR_TYPE_NUM_SIZE_32
:
2111 Temp
= Value
->Value
.u32
;
2114 case EFI_IFR_TYPE_BOOLEAN
:
2115 Temp
= Value
->Value
.b
;
2118 case EFI_IFR_TYPE_TIME
:
2119 Temp
= Value
->Value
.u32
& 0xffffff;
2122 case EFI_IFR_TYPE_DATE
:
2123 Temp
= Value
->Value
.u32
;
2130 Value
->Value
.u64
= Temp
;
2134 Get UINT64 type value.
2136 @param Value Input Hii value.
2138 @retval UINT64 Return the UINT64 type value.
2143 IN EFI_HII_VALUE
*Value
2150 switch (Value
->Type
) {
2151 case EFI_IFR_TYPE_NUM_SIZE_8
:
2152 RetVal
= Value
->Value
.u8
;
2155 case EFI_IFR_TYPE_NUM_SIZE_16
:
2156 RetVal
= Value
->Value
.u16
;
2159 case EFI_IFR_TYPE_NUM_SIZE_32
:
2160 RetVal
= Value
->Value
.u32
;
2163 case EFI_IFR_TYPE_BOOLEAN
:
2164 RetVal
= Value
->Value
.b
;
2167 case EFI_IFR_TYPE_DATE
:
2168 RetVal
= *(UINT64
*) &Value
->Value
.date
;
2171 case EFI_IFR_TYPE_TIME
:
2172 RetVal
= (*(UINT64
*) &Value
->Value
.time
) & 0xffffff;
2176 RetVal
= Value
->Value
.u64
;
2184 Compare two Hii value.
2186 @param Value1 Expression value to compare on left-hand.
2187 @param Value2 Expression value to compare on right-hand.
2188 @param Result Return value after compare.
2189 retval 0 Two operators equal.
2190 return Positive value if Value1 is greater than Value2.
2191 retval Negative value if Value1 is less than Value2.
2192 @param HiiHandle Only required for string compare.
2194 @retval other Could not perform compare on two values.
2195 @retval EFI_SUCCESS Compare the value success.
2200 IN EFI_HII_VALUE
*Value1
,
2201 IN EFI_HII_VALUE
*Value2
,
2203 IN EFI_HII_HANDLE HiiHandle OPTIONAL
2215 if (Value1
->Type
== EFI_IFR_TYPE_STRING
&& Value2
->Type
== EFI_IFR_TYPE_STRING
) {
2216 if (Value1
->Value
.string
== 0 || Value2
->Value
.string
== 0) {
2218 // StringId 0 is reserved
2220 return EFI_INVALID_PARAMETER
;
2223 if (Value1
->Value
.string
== Value2
->Value
.string
) {
2228 Str1
= GetToken (Value1
->Value
.string
, HiiHandle
);
2233 return EFI_NOT_FOUND
;
2236 Str2
= GetToken (Value2
->Value
.string
, HiiHandle
);
2239 return EFI_NOT_FOUND
;
2242 *Result
= StrCmp (Str1
, Str2
);
2251 // Take types(date, time, ref, buffer) as buffer
2253 if (IsTypeInBuffer(Value1
) && IsTypeInBuffer(Value2
)) {
2254 Buf1
= GetBufferForValue(Value1
);
2255 Buf1Len
= GetLengthForValue(Value1
);
2256 Buf2
= GetBufferForValue(Value2
);
2257 Buf2Len
= GetLengthForValue(Value2
);
2259 Len
= Buf1Len
> Buf2Len
? Buf2Len
: Buf1Len
;
2260 *Result
= CompareMem (Buf1
, Buf2
, Len
);
2261 if ((*Result
== 0) && (Buf1Len
!= Buf2Len
)) {
2263 // In this case, means base on samll number buffer, the data is same
2264 // So which value has more data, which value is bigger.
2266 *Result
= Buf1Len
> Buf2Len
? 1 : -1;
2272 // Take types(integer, boolean) as integer
2274 if (IsTypeInUINT64(Value1
) && IsTypeInUINT64(Value2
)) {
2275 Temp64
= HiiValueToUINT64(Value1
) - HiiValueToUINT64(Value2
);
2278 } else if (Temp64
< 0) {
2287 return EFI_UNSUPPORTED
;
2291 Check if current user has the privilege specified by the permissions GUID.
2293 @param[in] Guid A GUID specifying setup access permissions.
2295 @retval TRUE Current user has the privilege.
2296 @retval FALSE Current user does not have the privilege.
2299 CheckUserPrivilege (
2304 EFI_USER_PROFILE_HANDLE UserProfileHandle
;
2305 EFI_USER_INFO_HANDLE UserInfoHandle
;
2306 EFI_USER_INFO
*UserInfo
;
2307 EFI_GUID
*UserPermissionsGuid
;
2309 UINTN AccessControlDataSize
;
2310 EFI_USER_INFO_ACCESS_CONTROL
*AccessControl
;
2313 if (mUserManager
== NULL
) {
2314 Status
= gBS
->LocateProtocol (
2315 &gEfiUserManagerProtocolGuid
,
2317 (VOID
**) &mUserManager
2319 if (EFI_ERROR (Status
)) {
2321 /// If the system does not support user management, then it is assumed that
2322 /// all users have admin privilege and evaluation of each EFI_IFR_SECURITY
2323 /// op-code is always TRUE.
2329 Status
= mUserManager
->Current (mUserManager
, &UserProfileHandle
);
2330 ASSERT_EFI_ERROR (Status
);
2333 /// Enumerate all user information of the current user profile
2334 /// to look for any EFI_USER_INFO_ACCESS_SETUP record.
2337 for (UserInfoHandle
= NULL
;;) {
2338 Status
= mUserManager
->GetNextInfo (mUserManager
, UserProfileHandle
, &UserInfoHandle
);
2339 if (EFI_ERROR (Status
)) {
2344 Status
= mUserManager
->GetInfo (mUserManager
, UserProfileHandle
, UserInfoHandle
, NULL
, &UserInfoSize
);
2345 if (Status
!= EFI_BUFFER_TOO_SMALL
) {
2349 UserInfo
= (EFI_USER_INFO
*) AllocatePool (UserInfoSize
);
2350 if (UserInfo
== NULL
) {
2354 Status
= mUserManager
->GetInfo (mUserManager
, UserProfileHandle
, UserInfoHandle
, UserInfo
, &UserInfoSize
);
2355 if (EFI_ERROR (Status
) ||
2356 UserInfo
->InfoType
!= EFI_USER_INFO_ACCESS_POLICY_RECORD
||
2357 UserInfo
->InfoSize
<= sizeof (EFI_USER_INFO
)) {
2358 FreePool (UserInfo
);
2362 RemainSize
= UserInfo
->InfoSize
- sizeof (EFI_USER_INFO
);
2363 AccessControl
= (EFI_USER_INFO_ACCESS_CONTROL
*)(UserInfo
+ 1);
2364 while (RemainSize
>= sizeof (EFI_USER_INFO_ACCESS_CONTROL
)) {
2365 if (RemainSize
< AccessControl
->Size
|| AccessControl
->Size
< sizeof (EFI_USER_INFO_ACCESS_CONTROL
)) {
2368 if (AccessControl
->Type
== EFI_USER_INFO_ACCESS_SETUP
) {
2370 /// Check if current user has the privilege specified by the permissions GUID.
2373 UserPermissionsGuid
= (EFI_GUID
*)(AccessControl
+ 1);
2374 AccessControlDataSize
= AccessControl
->Size
- sizeof (EFI_USER_INFO_ACCESS_CONTROL
);
2375 while (AccessControlDataSize
>= sizeof (EFI_GUID
)) {
2376 if (CompareGuid (Guid
, UserPermissionsGuid
)) {
2377 FreePool (UserInfo
);
2380 UserPermissionsGuid
++;
2381 AccessControlDataSize
-= sizeof (EFI_GUID
);
2384 RemainSize
-= AccessControl
->Size
;
2385 AccessControl
= (EFI_USER_INFO_ACCESS_CONTROL
*)((UINT8
*)AccessControl
+ AccessControl
->Size
);
2388 FreePool (UserInfo
);
2394 Get question value from the predefined formset.
2396 @param DevicePath The driver's device path which produece the formset data.
2397 @param InputHiiHandle The hii handle associate with the formset data.
2398 @param FormSetGuid The formset guid which include the question.
2399 @param QuestionId The question id which need to get value from.
2400 @param Value The return data about question's value.
2402 @retval TRUE Get the question value success.
2403 @retval FALSE Get the question value failed.
2406 GetQuestionValueFromForm (
2407 IN EFI_DEVICE_PATH_PROTOCOL
*DevicePath
,
2408 IN EFI_HII_HANDLE InputHiiHandle
,
2409 IN EFI_GUID
*FormSetGuid
,
2410 IN EFI_QUESTION_ID QuestionId
,
2411 OUT EFI_HII_VALUE
*Value
2415 EFI_HII_HANDLE HiiHandle
;
2416 FORM_BROWSER_STATEMENT
*Question
;
2417 FORM_BROWSER_FORMSET
*FormSet
;
2418 FORM_BROWSER_FORM
*Form
;
2423 // The input parameter DevicePath or InputHiiHandle must have one valid input.
2425 ASSERT ((DevicePath
!= NULL
&& InputHiiHandle
== NULL
) ||
2426 (DevicePath
== NULL
&& InputHiiHandle
!= NULL
) );
2436 if (DevicePath
!= NULL
) {
2437 HiiHandle
= DevicePathToHiiHandle (DevicePath
, FormSetGuid
);
2438 if (HiiHandle
== NULL
) {
2442 HiiHandle
= InputHiiHandle
;
2444 ASSERT (HiiHandle
!= NULL
);
2447 // Get the formset data include this question.
2449 FormSet
= AllocateZeroPool (sizeof (FORM_BROWSER_FORMSET
));
2450 ASSERT (FormSet
!= NULL
);
2451 Status
= InitializeFormSet(HiiHandle
, FormSetGuid
, FormSet
);
2452 if (EFI_ERROR (Status
)) {
2458 // Base on the Question Id to get the question info.
2460 Question
= IdToQuestion(FormSet
, NULL
, QuestionId
);
2461 if (Question
== NULL
) {
2467 // Search form in the formset scope
2469 Link
= GetFirstNode (&FormSet
->FormListHead
);
2470 while (!IsNull (&FormSet
->FormListHead
, Link
)) {
2471 Form
= FORM_BROWSER_FORM_FROM_LINK (Link
);
2473 Question
= IdToQuestion2 (Form
, QuestionId
);
2474 if (Question
!= NULL
) {
2478 Link
= GetNextNode (&FormSet
->FormListHead
, Link
);
2481 ASSERT (Form
!= NULL
);
2484 // Get the question value.
2486 Status
= GetQuestionValue(FormSet
, Form
, Question
, GetSetValueWithEditBuffer
);
2487 if (EFI_ERROR (Status
)) {
2492 CopyMem (Value
, &Question
->HiiValue
, sizeof (EFI_HII_VALUE
));
2496 // Clean the formset structure and restore the global parameter.
2498 if (FormSet
!= NULL
) {
2499 DestroyFormSet (FormSet
);
2506 Evaluate the result of a HII expression.
2508 If Expression is NULL, then ASSERT.
2510 @param FormSet FormSet associated with this expression.
2511 @param Form Form associated with this expression.
2512 @param Expression Expression to be evaluated.
2514 @retval EFI_SUCCESS The expression evaluated successfuly
2515 @retval EFI_NOT_FOUND The Question which referenced by a QuestionId
2517 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
2519 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
2520 @retval EFI_INVALID_PARAMETER Syntax error with the Expression
2524 EvaluateExpression (
2525 IN FORM_BROWSER_FORMSET
*FormSet
,
2526 IN FORM_BROWSER_FORM
*Form
,
2527 IN OUT FORM_EXPRESSION
*Expression
2532 EXPRESSION_OPCODE
*OpCode
;
2533 FORM_BROWSER_STATEMENT
*Question
;
2534 FORM_BROWSER_STATEMENT
*Question2
;
2536 EFI_HII_VALUE Data1
;
2537 EFI_HII_VALUE Data2
;
2538 EFI_HII_VALUE Data3
;
2539 FORM_EXPRESSION
*RuleExpression
;
2540 EFI_HII_VALUE
*Value
;
2545 LIST_ENTRY
*SubExpressionLink
;
2546 FORM_EXPRESSION
*SubExpression
;
2553 EFI_HII_VALUE QuestionVal
;
2554 EFI_DEVICE_PATH_PROTOCOL
*DevicePath
;
2559 // Save current stack offset.
2561 StackOffset
= SaveExpressionEvaluationStackOffset ();
2563 ASSERT (Expression
!= NULL
);
2564 Expression
->Result
.Type
= EFI_IFR_TYPE_OTHER
;
2566 Link
= GetFirstNode (&Expression
->OpCodeListHead
);
2567 while (!IsNull (&Expression
->OpCodeListHead
, Link
)) {
2568 OpCode
= EXPRESSION_OPCODE_FROM_LINK (Link
);
2570 Link
= GetNextNode (&Expression
->OpCodeListHead
, Link
);
2572 ZeroMem (&Data1
, sizeof (EFI_HII_VALUE
));
2573 ZeroMem (&Data2
, sizeof (EFI_HII_VALUE
));
2574 ZeroMem (&Data3
, sizeof (EFI_HII_VALUE
));
2577 Value
->Type
= EFI_IFR_TYPE_BOOLEAN
;
2578 Status
= EFI_SUCCESS
;
2580 switch (OpCode
->Operand
) {
2582 // Built-in functions
2584 case EFI_IFR_EQ_ID_VAL_OP
:
2585 Question
= IdToQuestion (FormSet
, Form
, OpCode
->QuestionId
);
2586 if (Question
== NULL
) {
2587 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2591 Status
= CompareHiiValue (&Question
->HiiValue
, &OpCode
->Value
, &Result
, NULL
);
2592 if (Status
== EFI_UNSUPPORTED
) {
2593 Status
= EFI_SUCCESS
;
2594 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2598 if (EFI_ERROR (Status
)) {
2601 Value
->Value
.b
= (BOOLEAN
) ((Result
== 0) ? TRUE
: FALSE
);
2604 case EFI_IFR_EQ_ID_ID_OP
:
2605 Question
= IdToQuestion (FormSet
, Form
, OpCode
->QuestionId
);
2606 if (Question
== NULL
) {
2607 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2611 Question2
= IdToQuestion (FormSet
, Form
, OpCode
->QuestionId2
);
2612 if (Question2
== NULL
) {
2613 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2617 Status
= CompareHiiValue (&Question
->HiiValue
, &Question2
->HiiValue
, &Result
, FormSet
->HiiHandle
);
2618 if (Status
== EFI_UNSUPPORTED
) {
2619 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2620 Status
= EFI_SUCCESS
;
2623 if (EFI_ERROR (Status
)) {
2626 Value
->Value
.b
= (BOOLEAN
) ((Result
== 0) ? TRUE
: FALSE
);
2629 case EFI_IFR_EQ_ID_VAL_LIST_OP
:
2630 Question
= IdToQuestion (FormSet
, Form
, OpCode
->QuestionId
);
2631 if (Question
== NULL
) {
2632 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2636 Value
->Value
.b
= FALSE
;
2637 for (Index
=0; Index
< OpCode
->ListLength
; Index
++) {
2638 if (Question
->HiiValue
.Value
.u16
== OpCode
->ValueList
[Index
]) {
2639 Value
->Value
.b
= TRUE
;
2645 case EFI_IFR_DUP_OP
:
2646 Status
= PopExpression (Value
);
2647 if (EFI_ERROR (Status
)) {
2651 Status
= PushExpression (Value
);
2654 case EFI_IFR_QUESTION_REF1_OP
:
2655 case EFI_IFR_THIS_OP
:
2656 Question
= IdToQuestion (FormSet
, Form
, OpCode
->QuestionId
);
2657 if (Question
== NULL
) {
2658 Status
= EFI_NOT_FOUND
;
2662 Value
= &Question
->HiiValue
;
2665 case EFI_IFR_SECURITY_OP
:
2666 Value
->Value
.b
= CheckUserPrivilege (&OpCode
->Guid
);
2669 case EFI_IFR_GET_OP
:
2671 // Get Value from VarStore buffer, EFI VarStore, Name/Value VarStore.
2673 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2674 Value
->Value
.u8
= 0;
2675 if (OpCode
->VarStorage
!= NULL
) {
2676 switch (OpCode
->VarStorage
->Type
) {
2677 case EFI_HII_VARSTORE_BUFFER
:
2678 case EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER
:
2680 // Get value from Edit Buffer
2682 Value
->Type
= OpCode
->ValueType
;
2683 CopyMem (&Value
->Value
, OpCode
->VarStorage
->EditBuffer
+ OpCode
->VarStoreInfo
.VarOffset
, OpCode
->ValueWidth
);
2685 case EFI_HII_VARSTORE_NAME_VALUE
:
2686 if (OpCode
->ValueType
!= EFI_IFR_TYPE_STRING
) {
2688 // Get value from string except for STRING value.
2690 Status
= GetValueByName (OpCode
->VarStorage
, OpCode
->ValueName
, &StrPtr
, GetSetValueWithEditBuffer
);
2691 if (!EFI_ERROR (Status
)) {
2692 ASSERT (StrPtr
!= NULL
);
2693 TempLength
= StrLen (StrPtr
);
2694 if (OpCode
->ValueWidth
>= ((TempLength
+ 1) / 2)) {
2695 Value
->Type
= OpCode
->ValueType
;
2696 TempBuffer
= (UINT8
*) &Value
->Value
;
2697 ZeroMem (TempStr
, sizeof (TempStr
));
2698 for (Index
= 0; Index
< TempLength
; Index
++) {
2699 TempStr
[0] = StrPtr
[TempLength
- Index
- 1];
2700 DigitUint8
= (UINT8
) StrHexToUint64 (TempStr
);
2701 if ((Index
& 1) == 0) {
2702 TempBuffer
[Index
/2] = DigitUint8
;
2704 TempBuffer
[Index
/2] = (UINT8
) ((DigitUint8
<< 4) + TempBuffer
[Index
/2]);
2711 case EFI_HII_VARSTORE_EFI_VARIABLE
:
2713 // Get value from variable.
2715 TempLength
= OpCode
->ValueWidth
;
2716 Value
->Type
= OpCode
->ValueType
;
2717 Status
= gRT
->GetVariable (
2719 &OpCode
->VarStorage
->Guid
,
2724 if (EFI_ERROR (Status
)) {
2725 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2726 Value
->Value
.u8
= 0;
2731 // Not recognize storage.
2733 Status
= EFI_UNSUPPORTED
;
2738 // For Time/Date Data
2740 if (OpCode
->ValueType
!= EFI_IFR_TYPE_DATE
&& OpCode
->ValueType
!= EFI_IFR_TYPE_TIME
) {
2742 // Only support Data/Time data when storage doesn't exist.
2744 Status
= EFI_UNSUPPORTED
;
2747 Status
= gRT
->GetTime (&EfiTime
, NULL
);
2748 if (!EFI_ERROR (Status
)) {
2749 if (OpCode
->ValueType
== EFI_IFR_TYPE_DATE
) {
2750 switch (OpCode
->VarStoreInfo
.VarOffset
) {
2752 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_16
;
2753 Value
->Value
.u16
= EfiTime
.Year
;
2756 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
2757 Value
->Value
.u8
= EfiTime
.Month
;
2760 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
2761 Value
->Value
.u8
= EfiTime
.Day
;
2765 // Invalid Date field.
2767 Status
= EFI_INVALID_PARAMETER
;
2771 switch (OpCode
->VarStoreInfo
.VarOffset
) {
2773 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
2774 Value
->Value
.u8
= EfiTime
.Hour
;
2777 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
2778 Value
->Value
.u8
= EfiTime
.Minute
;
2781 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_8
;
2782 Value
->Value
.u8
= EfiTime
.Second
;
2786 // Invalid Time field.
2788 Status
= EFI_INVALID_PARAMETER
;
2797 case EFI_IFR_QUESTION_REF3_OP
:
2799 // EFI_IFR_QUESTION_REF3
2800 // Pop an expression from the expression stack
2802 Status
= PopExpression (Value
);
2803 if (EFI_ERROR (Status
)) {
2808 // Validate the expression value
2810 if ((Value
->Type
> EFI_IFR_TYPE_NUM_SIZE_64
) || (Value
->Value
.u64
> 0xffff)) {
2811 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2815 if (OpCode
->DevicePath
!= 0) {
2816 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2818 StrPtr
= GetToken (OpCode
->DevicePath
, FormSet
->HiiHandle
);
2819 if (StrPtr
!= NULL
&& mPathFromText
!= NULL
) {
2820 DevicePath
= mPathFromText
->ConvertTextToDevicePath(StrPtr
);
2821 if (DevicePath
!= NULL
&& GetQuestionValueFromForm(DevicePath
, NULL
, &OpCode
->Guid
, Value
->Value
.u16
, &QuestionVal
)) {
2822 Value
= &QuestionVal
;
2824 if (DevicePath
!= NULL
) {
2825 FreePool (DevicePath
);
2829 if (StrPtr
!= NULL
) {
2832 } else if (CompareGuid (&OpCode
->Guid
, &gZeroGuid
) != 0) {
2833 if (!GetQuestionValueFromForm(NULL
, FormSet
->HiiHandle
, &OpCode
->Guid
, Value
->Value
.u16
, &QuestionVal
)){
2834 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2837 Value
= &QuestionVal
;
2839 Question
= IdToQuestion (FormSet
, Form
, Value
->Value
.u16
);
2840 if (Question
== NULL
) {
2841 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2846 // push the questions' value on to the expression stack
2848 Value
= &Question
->HiiValue
;
2852 case EFI_IFR_RULE_REF_OP
:
2854 // Find expression for this rule
2856 RuleExpression
= RuleIdToExpression (Form
, OpCode
->RuleId
);
2857 if (RuleExpression
== NULL
) {
2858 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2863 // Evaluate this rule expression
2865 Status
= EvaluateExpression (FormSet
, Form
, RuleExpression
);
2866 if (EFI_ERROR (Status
) || RuleExpression
->Result
.Type
== EFI_IFR_TYPE_UNDEFINED
) {
2867 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2871 Value
= &RuleExpression
->Result
;
2874 case EFI_IFR_STRING_REF1_OP
:
2875 Value
->Type
= EFI_IFR_TYPE_STRING
;
2876 Value
->Value
.string
= OpCode
->Value
.Value
.string
;
2882 case EFI_IFR_TRUE_OP
:
2883 case EFI_IFR_FALSE_OP
:
2884 case EFI_IFR_ONE_OP
:
2885 case EFI_IFR_ONES_OP
:
2886 case EFI_IFR_UINT8_OP
:
2887 case EFI_IFR_UINT16_OP
:
2888 case EFI_IFR_UINT32_OP
:
2889 case EFI_IFR_UINT64_OP
:
2890 case EFI_IFR_UNDEFINED_OP
:
2891 case EFI_IFR_VERSION_OP
:
2892 case EFI_IFR_ZERO_OP
:
2893 Value
= &OpCode
->Value
;
2899 case EFI_IFR_LENGTH_OP
:
2900 Status
= PopExpression (Value
);
2901 if (EFI_ERROR (Status
)) {
2904 if (Value
->Type
!= EFI_IFR_TYPE_STRING
&& !IsTypeInBuffer (Value
)) {
2905 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2909 if (Value
->Type
== EFI_IFR_TYPE_STRING
) {
2910 StrPtr
= GetToken (Value
->Value
.string
, FormSet
->HiiHandle
);
2911 if (StrPtr
== NULL
) {
2912 Status
= EFI_INVALID_PARAMETER
;
2916 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
2917 Value
->Value
.u64
= StrLen (StrPtr
);
2920 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
2921 Value
->Value
.u64
= GetLengthForValue(Value
);
2922 FreePool (Value
->Buffer
);
2926 case EFI_IFR_NOT_OP
:
2927 Status
= PopExpression (Value
);
2928 if (EFI_ERROR (Status
)) {
2931 if (Value
->Type
!= EFI_IFR_TYPE_BOOLEAN
) {
2932 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2935 Value
->Value
.b
= (BOOLEAN
) (!Value
->Value
.b
);
2938 case EFI_IFR_QUESTION_REF2_OP
:
2940 // Pop an expression from the expression stack
2942 Status
= PopExpression (Value
);
2943 if (EFI_ERROR (Status
)) {
2948 // Validate the expression value
2950 if ((Value
->Type
> EFI_IFR_TYPE_NUM_SIZE_64
) || (Value
->Value
.u64
> 0xffff)) {
2951 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2955 Question
= IdToQuestion (FormSet
, Form
, Value
->Value
.u16
);
2956 if (Question
== NULL
) {
2957 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2961 Value
= &Question
->HiiValue
;
2964 case EFI_IFR_STRING_REF2_OP
:
2966 // Pop an expression from the expression stack
2968 Status
= PopExpression (Value
);
2969 if (EFI_ERROR (Status
)) {
2974 // Validate the expression value
2976 if ((Value
->Type
> EFI_IFR_TYPE_NUM_SIZE_64
) || (Value
->Value
.u64
> 0xffff)) {
2977 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
2981 Value
->Type
= EFI_IFR_TYPE_STRING
;
2982 StrPtr
= GetToken (Value
->Value
.u16
, FormSet
->HiiHandle
);
2983 if (StrPtr
== NULL
) {
2985 // If String not exit, push an empty string
2987 Value
->Value
.string
= NewString (gEmptyString
, FormSet
->HiiHandle
);
2989 Index
= (UINT16
) Value
->Value
.u64
;
2990 Value
->Value
.string
= Index
;
2995 case EFI_IFR_TO_BOOLEAN_OP
:
2997 // Pop an expression from the expression stack
2999 Status
= PopExpression (Value
);
3000 if (EFI_ERROR (Status
)) {
3005 // Convert an expression to a Boolean
3007 if (Value
->Type
<= EFI_IFR_TYPE_DATE
) {
3009 // When converting from an unsigned integer, zero will be converted to
3010 // FALSE and any other value will be converted to TRUE.
3012 Value
->Value
.b
= (BOOLEAN
) (HiiValueToUINT64(Value
) != 0);
3014 Value
->Type
= EFI_IFR_TYPE_BOOLEAN
;
3015 } else if (Value
->Type
== EFI_IFR_TYPE_STRING
) {
3017 // When converting from a string, if case-insensitive compare
3018 // with "true" is True, then push True. If a case-insensitive compare
3019 // with "false" is True, then push False. Otherwise, push Undefined.
3021 StrPtr
= GetToken (Value
->Value
.string
, FormSet
->HiiHandle
);
3022 if (StrPtr
== NULL
) {
3023 Status
= EFI_INVALID_PARAMETER
;
3027 IfrStrToUpper (StrPtr
);
3028 if (StrCmp (StrPtr
, L
"TRUE") == 0){
3029 Value
->Value
.b
= TRUE
;
3030 Value
->Type
= EFI_IFR_TYPE_BOOLEAN
;
3031 } else if (StrCmp (StrPtr
, L
"FALSE") == 0) {
3032 Value
->Value
.b
= FALSE
;
3033 Value
->Type
= EFI_IFR_TYPE_BOOLEAN
;
3035 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3038 } else if (Value
->Type
== EFI_IFR_TYPE_BUFFER
) {
3040 // When converting from a buffer, if the buffer is all zeroes,
3041 // then push False. Otherwise push True.
3043 for (Index
=0; Index
< Value
->BufferLen
; Index
++) {
3044 if (Value
->Buffer
[Index
] != 0) {
3049 if (Index
>= Value
->BufferLen
) {
3050 Value
->Value
.b
= FALSE
;
3052 Value
->Value
.b
= TRUE
;
3054 Value
->Type
= EFI_IFR_TYPE_BOOLEAN
;
3055 FreePool (Value
->Buffer
);
3059 case EFI_IFR_TO_STRING_OP
:
3060 Status
= IfrToString (FormSet
, OpCode
->Format
, Value
);
3063 case EFI_IFR_TO_UINT_OP
:
3064 Status
= IfrToUint (FormSet
, Value
);
3067 case EFI_IFR_TO_LOWER_OP
:
3068 case EFI_IFR_TO_UPPER_OP
:
3069 Status
= InitializeUnicodeCollationProtocol ();
3070 if (EFI_ERROR (Status
)) {
3074 Status
= PopExpression (Value
);
3075 if (EFI_ERROR (Status
)) {
3079 if (Value
->Type
!= EFI_IFR_TYPE_STRING
) {
3080 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3084 StrPtr
= GetToken (Value
->Value
.string
, FormSet
->HiiHandle
);
3085 if (StrPtr
== NULL
) {
3086 Status
= EFI_NOT_FOUND
;
3090 if (OpCode
->Operand
== EFI_IFR_TO_LOWER_OP
) {
3091 mUnicodeCollation
->StrLwr (mUnicodeCollation
, StrPtr
);
3093 mUnicodeCollation
->StrUpr (mUnicodeCollation
, StrPtr
);
3095 Value
->Value
.string
= NewString (StrPtr
, FormSet
->HiiHandle
);
3099 case EFI_IFR_BITWISE_NOT_OP
:
3101 // Pop an expression from the expression stack
3103 Status
= PopExpression (Value
);
3104 if (EFI_ERROR (Status
)) {
3107 if (Value
->Type
> EFI_IFR_TYPE_DATE
) {
3108 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3112 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
3113 Value
->Value
.u64
= ~ HiiValueToUINT64(Value
);
3116 case EFI_IFR_SET_OP
:
3118 // Pop an expression from the expression stack
3120 Status
= PopExpression (Value
);
3121 if (EFI_ERROR (Status
)) {
3124 Data1
.Type
= EFI_IFR_TYPE_BOOLEAN
;
3125 Data1
.Value
.b
= FALSE
;
3127 // Set value to var storage buffer
3129 if (OpCode
->VarStorage
!= NULL
) {
3130 switch (OpCode
->VarStorage
->Type
) {
3131 case EFI_HII_VARSTORE_BUFFER
:
3132 case EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER
:
3133 CopyMem (OpCode
->VarStorage
->EditBuffer
+ OpCode
->VarStoreInfo
.VarOffset
, &Value
->Value
, OpCode
->ValueWidth
);
3134 Data1
.Value
.b
= TRUE
;
3136 case EFI_HII_VARSTORE_NAME_VALUE
:
3137 if (OpCode
->ValueType
!= EFI_IFR_TYPE_STRING
) {
3138 NameValue
= AllocateZeroPool ((OpCode
->ValueWidth
* 2 + 1) * sizeof (CHAR16
));
3139 ASSERT (Value
!= NULL
);
3141 // Convert Buffer to Hex String
3143 TempBuffer
= (UINT8
*) &Value
->Value
+ OpCode
->ValueWidth
- 1;
3145 for (Index
= 0; Index
< OpCode
->ValueWidth
; Index
++, TempBuffer
--) {
3146 StrPtr
+= UnicodeValueToString (StrPtr
, PREFIX_ZERO
| RADIX_HEX
, *TempBuffer
, 2);
3148 Status
= SetValueByName (OpCode
->VarStorage
, OpCode
->ValueName
, NameValue
, GetSetValueWithEditBuffer
, NULL
);
3149 FreePool (NameValue
);
3150 if (!EFI_ERROR (Status
)) {
3151 Data1
.Value
.b
= TRUE
;
3155 case EFI_HII_VARSTORE_EFI_VARIABLE
:
3156 Status
= gRT
->SetVariable (
3158 &OpCode
->VarStorage
->Guid
,
3159 OpCode
->VarStorage
->Attributes
,
3163 if (!EFI_ERROR (Status
)) {
3164 Data1
.Value
.b
= TRUE
;
3169 // Not recognize storage.
3171 Status
= EFI_UNSUPPORTED
;
3176 // For Time/Date Data
3178 if (OpCode
->ValueType
!= EFI_IFR_TYPE_DATE
&& OpCode
->ValueType
!= EFI_IFR_TYPE_TIME
) {
3180 // Only support Data/Time data when storage doesn't exist.
3182 Status
= EFI_UNSUPPORTED
;
3185 Status
= gRT
->GetTime (&EfiTime
, NULL
);
3186 if (!EFI_ERROR (Status
)) {
3187 if (OpCode
->ValueType
== EFI_IFR_TYPE_DATE
) {
3188 switch (OpCode
->VarStoreInfo
.VarOffset
) {
3190 EfiTime
.Year
= Value
->Value
.u16
;
3193 EfiTime
.Month
= Value
->Value
.u8
;
3196 EfiTime
.Day
= Value
->Value
.u8
;
3200 // Invalid Date field.
3202 Status
= EFI_INVALID_PARAMETER
;
3206 switch (OpCode
->VarStoreInfo
.VarOffset
) {
3208 EfiTime
.Hour
= Value
->Value
.u8
;
3211 EfiTime
.Minute
= Value
->Value
.u8
;
3214 EfiTime
.Second
= Value
->Value
.u8
;
3218 // Invalid Time field.
3220 Status
= EFI_INVALID_PARAMETER
;
3224 Status
= gRT
->SetTime (&EfiTime
);
3225 if (!EFI_ERROR (Status
)) {
3226 Data1
.Value
.b
= TRUE
;
3236 case EFI_IFR_ADD_OP
:
3237 case EFI_IFR_SUBTRACT_OP
:
3238 case EFI_IFR_MULTIPLY_OP
:
3239 case EFI_IFR_DIVIDE_OP
:
3240 case EFI_IFR_MODULO_OP
:
3241 case EFI_IFR_BITWISE_AND_OP
:
3242 case EFI_IFR_BITWISE_OR_OP
:
3243 case EFI_IFR_SHIFT_LEFT_OP
:
3244 case EFI_IFR_SHIFT_RIGHT_OP
:
3246 // Pop an expression from the expression stack
3248 Status
= PopExpression (&Data2
);
3249 if (EFI_ERROR (Status
)) {
3254 // Pop another expression from the expression stack
3256 Status
= PopExpression (&Data1
);
3257 if (EFI_ERROR (Status
)) {
3261 if (Data2
.Type
> EFI_IFR_TYPE_DATE
) {
3262 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3267 if (Data1
.Type
> EFI_IFR_TYPE_DATE
) {
3268 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3272 Value
->Type
= EFI_IFR_TYPE_NUM_SIZE_64
;
3274 switch (OpCode
->Operand
) {
3275 case EFI_IFR_ADD_OP
:
3276 Value
->Value
.u64
= HiiValueToUINT64(&Data1
) + HiiValueToUINT64(&Data2
);
3279 case EFI_IFR_SUBTRACT_OP
:
3280 Value
->Value
.u64
= HiiValueToUINT64(&Data1
) - HiiValueToUINT64(&Data2
);
3283 case EFI_IFR_MULTIPLY_OP
:
3284 Value
->Value
.u64
= MultU64x32 (HiiValueToUINT64(&Data1
), (UINT32
) HiiValueToUINT64(&Data2
));
3287 case EFI_IFR_DIVIDE_OP
:
3288 Value
->Value
.u64
= DivU64x32 (HiiValueToUINT64(&Data1
), (UINT32
) HiiValueToUINT64(&Data2
));
3291 case EFI_IFR_MODULO_OP
:
3292 DivU64x32Remainder (HiiValueToUINT64(&Data1
), (UINT32
) HiiValueToUINT64(&Data2
), &TempValue
);
3293 Value
->Value
.u64
= TempValue
;
3296 case EFI_IFR_BITWISE_AND_OP
:
3297 Value
->Value
.u64
= HiiValueToUINT64(&Data1
) & HiiValueToUINT64(&Data2
);
3300 case EFI_IFR_BITWISE_OR_OP
:
3301 Value
->Value
.u64
= HiiValueToUINT64(&Data1
) | HiiValueToUINT64(&Data2
);
3304 case EFI_IFR_SHIFT_LEFT_OP
:
3305 Value
->Value
.u64
= LShiftU64 (HiiValueToUINT64(&Data1
), (UINTN
) HiiValueToUINT64(&Data2
));
3308 case EFI_IFR_SHIFT_RIGHT_OP
:
3309 Value
->Value
.u64
= RShiftU64 (HiiValueToUINT64(&Data1
), (UINTN
) HiiValueToUINT64(&Data2
));
3317 case EFI_IFR_AND_OP
:
3320 // Two Boolean operator
3322 Status
= PopExpression (&Data2
);
3323 if (EFI_ERROR (Status
)) {
3328 // Pop another expression from the expression stack
3330 Status
= PopExpression (&Data1
);
3331 if (EFI_ERROR (Status
)) {
3335 if (Data2
.Type
!= EFI_IFR_TYPE_BOOLEAN
) {
3336 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3340 if (Data1
.Type
!= EFI_IFR_TYPE_BOOLEAN
) {
3341 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3345 if (OpCode
->Operand
== EFI_IFR_AND_OP
) {
3346 Value
->Value
.b
= (BOOLEAN
) (Data1
.Value
.b
&& Data2
.Value
.b
);
3348 Value
->Value
.b
= (BOOLEAN
) (Data1
.Value
.b
|| Data2
.Value
.b
);
3352 case EFI_IFR_EQUAL_OP
:
3353 case EFI_IFR_NOT_EQUAL_OP
:
3354 case EFI_IFR_GREATER_EQUAL_OP
:
3355 case EFI_IFR_GREATER_THAN_OP
:
3356 case EFI_IFR_LESS_EQUAL_OP
:
3357 case EFI_IFR_LESS_THAN_OP
:
3359 // Compare two integer, string, boolean or date/time
3361 Status
= PopExpression (&Data2
);
3362 if (EFI_ERROR (Status
)) {
3367 // Pop another expression from the expression stack
3369 Status
= PopExpression (&Data1
);
3370 if (EFI_ERROR (Status
)) {
3374 if (Data2
.Type
> EFI_IFR_TYPE_BOOLEAN
&&
3375 Data2
.Type
!= EFI_IFR_TYPE_STRING
&&
3376 !IsTypeInBuffer(&Data2
)) {
3377 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3381 if (Data1
.Type
> EFI_IFR_TYPE_BOOLEAN
&&
3382 Data1
.Type
!= EFI_IFR_TYPE_STRING
&&
3383 !IsTypeInBuffer(&Data1
)) {
3384 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3388 Status
= CompareHiiValue (&Data1
, &Data2
, &Result
, FormSet
->HiiHandle
);
3389 if (Data1
.Type
== EFI_IFR_TYPE_BUFFER
) {
3390 FreePool (Data1
.Buffer
);
3392 if (Data2
.Type
== EFI_IFR_TYPE_BUFFER
) {
3393 FreePool (Data2
.Buffer
);
3396 if (Status
== EFI_UNSUPPORTED
) {
3397 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3398 Status
= EFI_SUCCESS
;
3402 if (EFI_ERROR (Status
)) {
3406 switch (OpCode
->Operand
) {
3407 case EFI_IFR_EQUAL_OP
:
3408 Value
->Value
.b
= (BOOLEAN
) ((Result
== 0) ? TRUE
: FALSE
);
3411 case EFI_IFR_NOT_EQUAL_OP
:
3412 Value
->Value
.b
= (BOOLEAN
) ((Result
!= 0) ? TRUE
: FALSE
);
3415 case EFI_IFR_GREATER_EQUAL_OP
:
3416 Value
->Value
.b
= (BOOLEAN
) ((Result
>= 0) ? TRUE
: FALSE
);
3419 case EFI_IFR_GREATER_THAN_OP
:
3420 Value
->Value
.b
= (BOOLEAN
) ((Result
> 0) ? TRUE
: FALSE
);
3423 case EFI_IFR_LESS_EQUAL_OP
:
3424 Value
->Value
.b
= (BOOLEAN
) ((Result
<= 0) ? TRUE
: FALSE
);
3427 case EFI_IFR_LESS_THAN_OP
:
3428 Value
->Value
.b
= (BOOLEAN
) ((Result
< 0) ? TRUE
: FALSE
);
3436 case EFI_IFR_MATCH_OP
:
3437 Status
= InitializeUnicodeCollationProtocol ();
3438 if (EFI_ERROR (Status
)) {
3442 Status
= IfrMatch (FormSet
, Value
);
3445 case EFI_IFR_MATCH2_OP
:
3446 Status
= IfrMatch2 (FormSet
, &OpCode
->Guid
, Value
);
3449 case EFI_IFR_CATENATE_OP
:
3450 Status
= IfrCatenate (FormSet
, Value
);
3456 case EFI_IFR_CONDITIONAL_OP
:
3458 // Pop third expression from the expression stack
3460 Status
= PopExpression (&Data3
);
3461 if (EFI_ERROR (Status
)) {
3466 // Pop second expression from the expression stack
3468 Status
= PopExpression (&Data2
);
3469 if (EFI_ERROR (Status
)) {
3474 // Pop first expression from the expression stack
3476 Status
= PopExpression (&Data1
);
3477 if (EFI_ERROR (Status
)) {
3480 if (Data1
.Type
!= EFI_IFR_TYPE_BOOLEAN
) {
3481 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3485 if (Data1
.Value
.b
) {
3492 case EFI_IFR_FIND_OP
:
3493 Status
= IfrFind (FormSet
, OpCode
->Format
, Value
);
3496 case EFI_IFR_MID_OP
:
3497 Status
= IfrMid (FormSet
, Value
);
3500 case EFI_IFR_TOKEN_OP
:
3501 Status
= IfrToken (FormSet
, Value
);
3504 case EFI_IFR_SPAN_OP
:
3505 Status
= IfrSpan (FormSet
, OpCode
->Flags
, Value
);
3508 case EFI_IFR_MAP_OP
:
3510 // Pop the check value
3512 Status
= PopExpression (&Data1
);
3513 if (EFI_ERROR (Status
)) {
3517 // Check MapExpression list is valid.
3519 if (OpCode
->MapExpressionList
.ForwardLink
== NULL
) {
3520 Status
= EFI_INVALID_PARAMETER
;
3524 // Go through map expression list.
3526 SubExpressionLink
= GetFirstNode(&OpCode
->MapExpressionList
);
3527 while (!IsNull (&OpCode
->MapExpressionList
, SubExpressionLink
)) {
3528 SubExpression
= FORM_EXPRESSION_FROM_LINK (SubExpressionLink
);
3530 // Evaluate the first expression in this pair.
3532 Status
= EvaluateExpression (FormSet
, Form
, SubExpression
);
3533 if (EFI_ERROR (Status
)) {
3537 // Compare the expression value with current value
3539 if ((CompareHiiValue (&Data1
, &SubExpression
->Result
, &Result
, NULL
) == EFI_SUCCESS
) && (Result
== 0)) {
3541 // Try get the map value.
3543 SubExpressionLink
= GetNextNode (&OpCode
->MapExpressionList
, SubExpressionLink
);
3544 if (IsNull (&OpCode
->MapExpressionList
, SubExpressionLink
)) {
3545 Status
= EFI_INVALID_PARAMETER
;
3548 SubExpression
= FORM_EXPRESSION_FROM_LINK (SubExpressionLink
);
3549 Status
= EvaluateExpression (FormSet
, Form
, SubExpression
);
3550 if (EFI_ERROR (Status
)) {
3553 Value
= &SubExpression
->Result
;
3557 // Skip the second expression on this pair.
3559 SubExpressionLink
= GetNextNode (&OpCode
->MapExpressionList
, SubExpressionLink
);
3560 if (IsNull (&OpCode
->MapExpressionList
, SubExpressionLink
)) {
3561 Status
= EFI_INVALID_PARAMETER
;
3565 // Goto the first expression on next pair.
3567 SubExpressionLink
= GetNextNode (&OpCode
->MapExpressionList
, SubExpressionLink
);
3571 // No map value is found.
3573 if (IsNull (&OpCode
->MapExpressionList
, SubExpressionLink
)) {
3574 Value
->Type
= EFI_IFR_TYPE_UNDEFINED
;
3575 Value
->Value
.u8
= 0;
3582 if (EFI_ERROR (Status
) || Value
->Type
== EFI_IFR_TYPE_UNDEFINED
) {
3586 Status
= PushExpression (Value
);
3587 if (EFI_ERROR (Status
)) {
3593 // Pop the final result from expression stack
3596 Status
= PopExpression (Value
);
3597 if (EFI_ERROR (Status
)) {
3602 // After evaluating an expression, there should be only one value left on the expression stack
3604 if (PopExpression (Value
) != EFI_ACCESS_DENIED
) {
3605 Status
= EFI_INVALID_PARAMETER
;
3609 RestoreExpressionEvaluationStackOffset (StackOffset
);
3610 if (!EFI_ERROR (Status
)) {
3611 CopyMem (&Expression
->Result
, Value
, sizeof (EFI_HII_VALUE
));
3618 Check whether the result is TRUE or FALSE.
3620 For the EFI_HII_VALUE value type is numeric, return TRUE if the
3623 @param Result Input the result data.
3625 @retval TRUE The result is TRUE.
3626 @retval FALSE The result is FALSE.
3631 IN EFI_HII_VALUE
*Result
3634 switch (Result
->Type
) {
3635 case EFI_IFR_TYPE_BOOLEAN
:
3636 return Result
->Value
.b
;
3638 case EFI_IFR_TYPE_NUM_SIZE_8
:
3639 return (BOOLEAN
)(Result
->Value
.u8
!= 0);
3641 case EFI_IFR_TYPE_NUM_SIZE_16
:
3642 return (BOOLEAN
)(Result
->Value
.u16
!= 0);
3644 case EFI_IFR_TYPE_NUM_SIZE_32
:
3645 return (BOOLEAN
)(Result
->Value
.u32
!= 0);
3647 case EFI_IFR_TYPE_NUM_SIZE_64
:
3648 return (BOOLEAN
)(Result
->Value
.u64
!= 0);
3656 Return the result of the expression list. Check the expression list and
3657 return the highest priority express result.
3658 Priority: DisableIf > SuppressIf > GrayOutIf > FALSE
3660 @param ExpList The input expression list.
3661 @param Evaluate Whether need to evaluate the expression first.
3662 @param FormSet FormSet associated with this expression.
3663 @param Form Form associated with this expression.
3665 @retval EXPRESS_RESULT Return the higher priority express result.
3666 DisableIf > SuppressIf > GrayOutIf > FALSE
3670 EvaluateExpressionList (
3671 IN FORM_EXPRESSION_LIST
*ExpList
,
3672 IN BOOLEAN Evaluate
,
3673 IN FORM_BROWSER_FORMSET
*FormSet
, OPTIONAL
3674 IN FORM_BROWSER_FORM
*Form OPTIONAL
3678 EXPRESS_RESULT ReturnVal
;
3679 EXPRESS_RESULT CompareOne
;
3682 if (ExpList
== NULL
) {
3683 return ExpressFalse
;
3686 ASSERT(ExpList
->Signature
== FORM_EXPRESSION_LIST_SIGNATURE
);
3690 // Check whether need to evaluate the expression first.
3693 while (ExpList
->Count
> Index
) {
3694 Status
= EvaluateExpression (FormSet
, Form
, ExpList
->Expression
[Index
++]);
3695 if (EFI_ERROR (Status
)) {
3696 return ExpressFalse
;
3702 // Run the list of expressions.
3704 ReturnVal
= ExpressFalse
;
3705 for (Index
= 0; Index
< ExpList
->Count
; Index
++) {
3706 if (IsTrue (&ExpList
->Expression
[Index
]->Result
)) {
3707 switch (ExpList
->Expression
[Index
]->Type
) {
3708 case EFI_HII_EXPRESSION_SUPPRESS_IF
:
3709 CompareOne
= ExpressSuppress
;
3712 case EFI_HII_EXPRESSION_GRAY_OUT_IF
:
3713 CompareOne
= ExpressGrayOut
;
3716 case EFI_HII_EXPRESSION_DISABLE_IF
:
3717 CompareOne
= ExpressDisable
;
3721 return ExpressFalse
;
3724 ReturnVal
= ReturnVal
< CompareOne
? CompareOne
: ReturnVal
;