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NAME
- ParentChunk
-
get the nesting context node for the given chunk. (V36)
SYNOPSIS
parent = ParentChunk(contextNode);
D0 A0
struct ContextNode *ParentChunk(struct ContextNode *);
D0 A0
struct ContextNode *ParentChunk(struct ContextNode *);
FUNCTION
Returns a context node for the chunk containing the chunk for the given context node. This function effectively moves down the context stack into previously pushed contexts. For example, to get a ContextNode pointer for the enclosing FORM chunk while reading a data chunk, use: ParentChunk(CurrentChunk(iff)) to find this pointer. The ContextNode structure contains information on the type of chunk and its size.
INPUTS
- contextNode
-
pointer to a context node.
RESULT
- parent
-
pointer to the enclosing context node or NULL if none.