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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_09_07
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9n07124a
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1991-05-09
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/*
* xrt.cpp - cross-reference table
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ln_seq.h"
#include "xrt.h"
class treenode
{
public:
char *word;
ln_seq lines;
xrt left, right;
treenode(char *w, unsigned n);
~treenode();
};
treenode::treenode(char *w, unsigned n) : lines(n)
{
word = strcpy(new char[strlen(w) + 1], w);
}
treenode::~treenode()
{
delete word;
}
xrt::xrt() : root(0) { }
xrt::~xrt()
{
delete root;
}
void xrt::add(char *w, unsigned n)
{
int cond;
if (root == 0)
root = new treenode(w, n);
else if ((cond = strcmp(w, root->word)) == 0)
root->lines.add(n);
else if (cond < 0)
root->left.add(w, n);
else
root->right.add(w, n);
}
void xrt::print()
{
if (root != 0)
{
root->left.print();
printf("%12s: ", root->word);
root->lines.print();
printf("\n");
root->right.print();
}
}