baum

annotate actions.c @ 3:15d7d6b9766f

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added input; added nextNode, lastNode, insertLast
author meillo@marmaro.de
date Thu, 07 Feb 2008 16:15:07 +0100
parents 557fa4df2bcd
children c202ccccedb5
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@3 8 unsigned 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@3 12
meillo@2 13 } else if (strcmp(node->name, "sum") == 0) {
meillo@2 14 logit("sum-node");
meillo@2 15 return action_sum(node);
meillo@3 16
meillo@2 17 } else if (strcmp(node->name, "printchar") == 0) {
meillo@2 18 logit("printchar-node");
meillo@2 19 return action_printchar(node);
meillo@3 20
meillo@2 21 } else if (strcmp(node->name, "number") == 0) {
meillo@2 22 logit("number-node");
meillo@2 23 return action_number(node);
meillo@3 24
meillo@3 25 } else if (strcmp(node->name, "input") == 0) {
meillo@3 26 logit("input-node");
meillo@3 27 return action_input(node);
meillo@3 28
meillo@2 29 } else {
meillo@2 30 fprintf(stderr, "unknown kind of node");
meillo@2 31 exit(1);
meillo@2 32 }
meillo@2 33 }
meillo@2 34
meillo@2 35
meillo@2 36
meillo@3 37 unsigned char action_print(struct Node* node) {
meillo@2 38 printf("%d\n", action(node->down));
meillo@2 39 return 0;
meillo@2 40 }
meillo@2 41
meillo@2 42
meillo@3 43 unsigned char action_printchar(struct Node* node) {
meillo@2 44 printf("%c\n", action(node->down));
meillo@2 45 return 0;
meillo@2 46 }
meillo@2 47
meillo@2 48
meillo@3 49 unsigned char action_sum(struct Node* node) {
meillo@2 50 struct Node* tp;
meillo@2 51 tp = node->down;
meillo@2 52 while (tp != NULL) {
meillo@2 53 node->value += action(tp);
meillo@2 54 tp = tp->right;
meillo@2 55 }
meillo@2 56 return node->value;
meillo@2 57 }
meillo@2 58
meillo@2 59
meillo@3 60 unsigned char action_number(struct Node* node) {
meillo@2 61 return node->value;
meillo@2 62 }
meillo@2 63
meillo@3 64
meillo@3 65 unsigned char action_input(struct Node* node) {
meillo@3 66 unsigned char input = (unsigned char) getchar();
meillo@3 67 getchar(); /* catches the newline */
meillo@3 68 insertLast(node, newNode("number", input));
meillo@3 69 return 0;
meillo@3 70 }
meillo@3 71
meillo@3 72