| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1 | /* List a node on a file */ |
| 2 | |
| Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame^] | 3 | #include "pgenheaders.h" |
| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 4 | #include "token.h" |
| 5 | #include "node.h" |
| 6 | |
| Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame^] | 7 | /* Forward */ |
| 8 | static void list1node PROTO((FILE *, node *)); |
| 9 | |
| 10 | void |
| 11 | listtree(n) |
| 12 | node *n; |
| 13 | { |
| 14 | listnode(stdout, n); |
| 15 | } |
| 16 | |
| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 17 | static int level, atbol; |
| 18 | |
| Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame^] | 19 | void |
| 20 | listnode(fp, n) |
| 21 | FILE *fp; |
| 22 | node *n; |
| 23 | { |
| 24 | level = 0; |
| 25 | atbol = 1; |
| 26 | list1node(fp, n); |
| 27 | } |
| 28 | |
| Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 29 | static void |
| 30 | list1node(fp, n) |
| 31 | FILE *fp; |
| 32 | node *n; |
| 33 | { |
| 34 | if (n == 0) |
| 35 | return; |
| 36 | if (ISNONTERMINAL(TYPE(n))) { |
| 37 | int i; |
| 38 | for (i = 0; i < NCH(n); i++) |
| 39 | list1node(fp, CHILD(n, i)); |
| 40 | } |
| 41 | else if (ISTERMINAL(TYPE(n))) { |
| 42 | switch (TYPE(n)) { |
| 43 | case INDENT: |
| 44 | ++level; |
| 45 | break; |
| 46 | case DEDENT: |
| 47 | --level; |
| 48 | break; |
| 49 | default: |
| 50 | if (atbol) { |
| 51 | int i; |
| 52 | for (i = 0; i < level; ++i) |
| 53 | fprintf(fp, "\t"); |
| 54 | atbol = 0; |
| 55 | } |
| 56 | if (TYPE(n) == NEWLINE) { |
| 57 | if (STR(n) != NULL) |
| 58 | fprintf(fp, "%s", STR(n)); |
| 59 | fprintf(fp, "\n"); |
| 60 | atbol = 1; |
| 61 | } |
| 62 | else |
| 63 | fprintf(fp, "%s ", STR(n)); |
| 64 | break; |
| 65 | } |
| 66 | } |
| 67 | else |
| 68 | fprintf(fp, "? "); |
| 69 | } |