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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: parentchunk.c,v 1.1 1997/02/03 16:44:27 digulla Exp $
-
- Desc:
- Lang: english
- */
- #include "iffparse_intern.h"
-
- /*****************************************************************************
-
- NAME */
- #include <proto/iffparse.h>
-
- AROS_LH1(struct ContextNode *, ParentChunk,
-
- /* SYNOPSIS */
- AROS_LHA(struct ContextNode *, contextNode, A0),
-
- /* LOCATION */
- struct Library *, IFFParseBase, 30, IFFParse)
-
- /* FUNCTION
- Returns a pointer to the parent context node to the given
- one on the context node stack. The parent context node
- represents the chunk enclosing the chunk given.
- This can be use together with CurrentChunk() to iterate the
- context node stack top-down.
-
- INPUTS
- contextNode - pointer to a context node.
-
- RESULT
- parent - pointer to the parent context node or NULL if none.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
- CurrentChunk()
-
- INTERNALS
-
- HISTORY
- 27-11-96 digulla automatically created from
- iffparse_lib.fd and clib/iffparse_protos.h
-
- *****************************************************************************/
- {
- AROS_LIBFUNC_INIT
- AROS_LIBBASE_EXT_DECL(struct Library *,IFFParseBase)
-
- struct ContextNode *parentcn;
-
- /* Get the parent of this contextnode. The contextstack
- is simulated via AddHead/RemHead so we should use
- .mln_Succ to get the parent
- */
- parentcn = (struct ContextNode*)contextNode->cn_Node.mln_Succ;
-
- /* If the parent of the found node is 0 (mlh_Tail field
- in struct MinList, then parentcn is the default contextnode,
- which the user not should have access to
- */
-
- if (!parentcn->cn_Node.mln_Succ)
- parentcn = NULL;
-
- return (parentcn);
-
- AROS_LIBFUNC_EXIT
- } /* ParentChunk */
-