mirror of
https://github.com/python/cpython
synced 2024-09-05 00:05:39 +00:00
0b3ec19225
There was few cases of using literal 0 instead of NULL in the context of pointers. While this was a legitimate C code, using NULL rather than 0 makes the code clearer.
67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
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/* List a node on a file */
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#include "pgenheaders.h"
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#include "token.h"
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#include "node.h"
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/* Forward */
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static void list1node(FILE *, node *);
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static void listnode(FILE *, node *);
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void
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PyNode_ListTree(node *n)
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{
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listnode(stdout, n);
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}
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static int level, atbol;
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static void
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listnode(FILE *fp, node *n)
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{
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level = 0;
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atbol = 1;
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list1node(fp, n);
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}
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static void
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list1node(FILE *fp, node *n)
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{
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if (n == NULL)
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return;
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if (ISNONTERMINAL(TYPE(n))) {
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int i;
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for (i = 0; i < NCH(n); i++)
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list1node(fp, CHILD(n, i));
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}
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else if (ISTERMINAL(TYPE(n))) {
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switch (TYPE(n)) {
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case INDENT:
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++level;
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break;
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case DEDENT:
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--level;
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break;
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default:
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if (atbol) {
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int i;
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for (i = 0; i < level; ++i)
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fprintf(fp, "\t");
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atbol = 0;
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}
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if (TYPE(n) == NEWLINE) {
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if (STR(n) != NULL)
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fprintf(fp, "%s", STR(n));
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fprintf(fp, "\n");
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atbol = 1;
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}
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else
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fprintf(fp, "%s ", STR(n));
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break;
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}
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}
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else
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fprintf(fp, "? ");
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}
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