baum

annotate actions.c @ 2:557fa4df2bcd

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added difference between char and number
author meillo@marmaro.de
date Thu, 07 Feb 2008 14:46:27 +0100
parents
children 15d7d6b9766f
rev   line source
meillo@2 1 #include <stdio.h>
meillo@2 2 #include <stdlib.h>
meillo@2 3 #include <string.h>
meillo@2 4 #include "baum.h"
meillo@2 5 #include "actions.h"
meillo@2 6
meillo@2 7
meillo@2 8 char action(struct Node* node) {
meillo@2 9 if (strcmp(node->name, "print") == 0) {
meillo@2 10 logit("print-node");
meillo@2 11 return action_print(node);
meillo@2 12 } else if (strcmp(node->name, "sum") == 0) {
meillo@2 13 logit("sum-node");
meillo@2 14 return action_sum(node);
meillo@2 15 } else if (strcmp(node->name, "printchar") == 0) {
meillo@2 16 logit("printchar-node");
meillo@2 17 return action_printchar(node);
meillo@2 18 } else if (strcmp(node->name, "number") == 0) {
meillo@2 19 logit("number-node");
meillo@2 20 return action_number(node);
meillo@2 21 } else {
meillo@2 22 fprintf(stderr, "unknown kind of node");
meillo@2 23 exit(1);
meillo@2 24 }
meillo@2 25 }
meillo@2 26
meillo@2 27
meillo@2 28
meillo@2 29 char action_print(struct Node* node) {
meillo@2 30 printf("%d\n", action(node->down));
meillo@2 31 return 0;
meillo@2 32 }
meillo@2 33
meillo@2 34
meillo@2 35 char action_printchar(struct Node* node) {
meillo@2 36 printf("%c\n", action(node->down));
meillo@2 37 return 0;
meillo@2 38 }
meillo@2 39
meillo@2 40
meillo@2 41 char action_sum(struct Node* node) {
meillo@2 42 struct Node* tp;
meillo@2 43 tp = node->down;
meillo@2 44 while (tp != NULL) {
meillo@2 45 node->value += action(tp);
meillo@2 46 tp = tp->right;
meillo@2 47 }
meillo@2 48 return node->value;
meillo@2 49 }
meillo@2 50
meillo@2 51
meillo@2 52 char action_number(struct Node* node) {
meillo@2 53 return node->value;
meillo@2 54 }
meillo@2 55