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| author | Guido van Rossum <guido@python.org> | 1990-10-14 12:07:46 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 1990-10-14 12:07:46 (GMT) |
| commit | 85a5fbbdfea617f6cc8fae82c9e8c2b5c424436d (patch) | |
| tree | a1bf57db1c75e2a7029c8f2fad5f8dba4b9ba25c /Include/node.h | |
| parent | c636014c430620325f8d213e9ba10d925991b8d7 (diff) | |
| download | cpython-85a5fbbdfea617f6cc8fae82c9e8c2b5c424436d.zip cpython-85a5fbbdfea617f6cc8fae82c9e8c2b5c424436d.tar.gz cpython-85a5fbbdfea617f6cc8fae82c9e8c2b5c424436d.tar.bz2 | |
Initial revision
Diffstat (limited to 'Include/node.h')
| -rw-r--r-- | Include/node.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Include/node.h b/Include/node.h new file mode 100644 index 0000000..d01128b --- /dev/null +++ b/Include/node.h @@ -0,0 +1,29 @@ +/* Parse tree node interface */ + +typedef struct _node { + int n_type; + char *n_str; + int n_nchildren; + struct _node *n_child; +} node; + +extern node *newnode PROTO((int type)); +extern node *addchild PROTO((node *n, int type, char *str)); + +/* Node access functions */ +#define NCH(n) ((n)->n_nchildren) +#define CHILD(n, i) (&(n)->n_child[i]) +#define TYPE(n) ((n)->n_type) +#define STR(n) ((n)->n_str) + +/* Assert that the type of a node is what we expect */ +#ifndef DEBUG +#define REQ(n, type) { /*pass*/ ; } +#else +#define REQ(n, type) \ + { if (TYPE(n) != (type)) { \ + fprintf(stderr, "FATAL: node type %d, required %d\n", \ + TYPE(n), type); \ + abort(); \ + } } +#endif |