AmlTreeEnumerator.c

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#include <AmlNodeDefines.h>
 
#include <AmlCoreInterface.h>
#include <Tree/AmlTree.h>
 
BOOLEAN
EFIAPI
AmlEnumTree (
  IN      AML_NODE_HEADER               *Node,
  IN      EDKII_AML_TREE_ENUM_CALLBACK  CallBack,
  IN  OUT VOID                          *Context   OPTIONAL,
  OUT EFI_STATUS                        *Status    OPTIONAL
  )
{
  BOOLEAN  ContinueEnum;
 
  EAML_PARSE_INDEX  Index;
  EAML_PARSE_INDEX  MaxIndex;
 
  LIST_ENTRY  *StartLink;
  LIST_ENTRY  *CurrentLink;
 
  if (!IS_AML_NODE_VALID (Node) || (CallBack == NULL)) {
    ASSERT (0);
    if (Status != NULL) {
      *Status = EFI_INVALID_PARAMETER;
    }
 
    return FALSE;
  }
 
  ContinueEnum = (*CallBack)(Node, Context, Status);
  if (ContinueEnum == FALSE) {
    return ContinueEnum;
  }
 
  // Iterate through the fixed list of arguments.
  MaxIndex = (EAML_PARSE_INDEX)AmlGetFixedArgumentCount (
                                 (AML_OBJECT_NODE *)Node
                                 );
  for (Index = EAmlParseIndexTerm0; Index < MaxIndex; Index++) {
    ContinueEnum = AmlEnumTree (
                     AmlGetFixedArgument ((AML_OBJECT_NODE *)Node, Index),
                     CallBack,
                     Context,
                     Status
                     );
    if (ContinueEnum == FALSE) {
      return ContinueEnum;
    }
  }
 
  // Iterate through the variable list of arguments.
  StartLink = AmlNodeGetVariableArgList (Node);
  if (StartLink != NULL) {
    CurrentLink = StartLink->ForwardLink;
    while (CurrentLink != StartLink) {
      ContinueEnum = AmlEnumTree (
                       (AML_NODE_HEADER *)CurrentLink,
                       CallBack,
                       Context,
                       Status
                       );
      if (ContinueEnum == FALSE) {
        return ContinueEnum;
      }
 
      CurrentLink = CurrentLink->ForwardLink;
    } // while
  }
 
  return ContinueEnum;
}