LVParseTree_Iterator C API

An LVParseTree_Iterator object traverses a parse tree in a top-to-bottom, left-to-right fashion (sometimes called a pre-order or LL traversal).  You can get an iterator over a subtree rooted at a Node by calling:

LVParseTree_Node_CreateIteratorBegin(H_PARSE_TREE_NODE Node)

LVParseTree_Node_CreateIteratorEnd(node)

Use <LVSpeechPort.h> or <LV_SRE_ParseTree.h>

Return Type

Function

Description

 

 

 

H_PARSE_TREE_ITR

LVParseTree_Iterator_Create(void)

Creates a blank Iterator; its not pointing over anything.

H_PARSE_TREE_ITR

LVParseTree_Iterator_CreateFromCopy(H_PARSE_TREE_ITR Other)

Creates a new Iterator from another.  Both Iterators will need to be released when no longer needed.

void

LVParseTree_Iterator_Copy(H_PARSE_TREE Iterator,
                                                   H_PARSE_TREE_ITR   Other)

Copies the data from one handle into another.

void

LVParseTree_Iterator_Release(H_PARSE_TREE Iterator)

Releases the memory allocated to the Iterator handle.

 

 

 

void

LVParseTree_Iterator_Advance(H_PARSE_TREE_ITR Iterator)

Advances the Iterator one position.

H_PARSE_TREE_NODE

LVParseTree_Iterator_GetNode(H_PARSE_TREE_ITR Iterator)

Provides access to a node in the parse tree.

int

LVParseTree_Iterator_AreEqual(H_PARSE_TREE_ITR Iterator1,
                                                          H_PARSE_TREE_ITR Iterator2)

Tests equality with another Iterator.  Two Iterators are equal if they are pointing to the same node in a parse tree.

 

 

 

 

 

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