diff options
Diffstat (limited to 'kwset.c')
| -rw-r--r-- | kwset.c | 14 |
1 files changed, 7 insertions, 7 deletions
@@ -26,7 +26,7 @@ The author may be reached (Email) at the address mike@ai.mit.edu, or (US mail) as Mike Haertel c/o Free Software Foundation. */ -/* The algorithm implemented by these routines bears a startling resemblence +/* The algorithm implemented by these routines bears a startling resemblance to one discovered by Beate Commentz-Walter, although it is not identical. See "A String Matching Algorithm Fast on the Average," Technical Report, IBM-Germany, Scientific Center Heidelberg, Tiergartenstrasse 15, D-6900 @@ -65,7 +65,7 @@ struct trie struct trie *fail; /* Aho-Corasick failure function. */ int depth; /* Depth of this node from the root. */ int shift; /* Shift function for search failures. */ - int maxshift; /* Max shift of self and descendents. */ + int maxshift; /* Max shift of self and descendants. */ }; /* Structure returned opaquely to the caller, containing everything. */ @@ -308,7 +308,7 @@ treefails (register struct tree const *tree, struct trie const *fail, treefails(tree->rlink, fail, recourse); /* Find, in the chain of fails going back to the root, the first - node that has a descendent on the current label. */ + node that has a descendant on the current label. */ while (fail) { link = fail->links; @@ -426,16 +426,16 @@ kwsprep (kwset_t kws) computing the delta table, failure function, and shift function. */ for (curr = last = kwset->trie; curr; curr = curr->next) { - /* Enqueue the immediate descendents in the level order queue. */ + /* Enqueue the immediate descendants in the level order queue. */ enqueue(curr->links, &last); curr->shift = kwset->mind; curr->maxshift = kwset->mind; - /* Update the delta table for the descendents of this node. */ + /* Update the delta table for the descendants of this node. */ treedelta(curr->links, curr->depth, delta); - /* Compute the failure function for the decendents of this node. */ + /* Compute the failure function for the descendants of this node. */ treefails(curr->links, curr->fail, kwset->trie); /* Update the shifts at each node in the current node's chain @@ -450,7 +450,7 @@ kwsprep (kwset_t kws) fail->shift = curr->depth - fail->depth; /* If the current node is accepting then the shift at the - fail and its descendents should be no larger than the + fail and its descendants should be no larger than the difference of their depths. */ if (curr->accepting && fail->maxshift > curr->depth - fail->depth) fail->maxshift = curr->depth - fail->depth; |