| commit | 03a24cd47b0d067110db1026e99e13e974409768 | [log] [tgz] |
|---|---|---|
| author | Guido van Rossum <guido@python.org> | Sun Nov 18 17:37:06 1990 +0000 |
| committer | Guido van Rossum <guido@python.org> | Sun Nov 18 17:37:06 1990 +0000 |
| tree | 66817788e3eb93dc3c66a0f3c89e61428d69fec9 | |
| parent | eb38d2411c9ed3c1aeedc974e20e20a95c87427e [diff] [blame] |
Add function to free an entire parse tree.
diff --git a/Parser/node.c b/Parser/node.c index 86d607a..264fd9e 100644 --- a/Parser/node.c +++ b/Parser/node.c
@@ -45,3 +45,26 @@ n->n_child = NULL; return n; } + +static void +freechildren(n) + node *n; +{ + int i; + for (i = NCH(n); --i >= 0; ) + freechildren(CHILD(n, i)); + if (n->n_child != NULL) + DEL(n->n_child); + if (STR(n) != NULL) + DEL(STR(n)); +} + +void +freenode(n) + node *n; +{ + if (n != NULL) { + freechildren(n); + DEL(n); + } +}