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| author | Guido van Rossum <guido@python.org> | 1990-11-18 17:37:06 +0000 |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 1990-11-18 17:37:06 +0000 |
| commit | 10d4fcf75a5209a1999ae1c70c532cf1c447adc1 (patch) | |
| tree | 66817788e3eb93dc3c66a0f3c89e61428d69fec9 /Parser/node.c | |
| parent | 1f5badcc754f45d90d7a800907bc8e8f32a86ee6 (diff) | |
| download | cpython-10d4fcf75a5209a1999ae1c70c532cf1c447adc1.tar.gz | |
Add function to free an entire parse tree.
Diffstat (limited to 'Parser/node.c')
| -rw-r--r-- | Parser/node.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Parser/node.c b/Parser/node.c index 86d607ab19..264fd9e8a1 100644 --- a/Parser/node.c +++ b/Parser/node.c @@ -45,3 +45,26 @@ addchild(n1, type, str) 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); + } +} |