kjell/parser.c at main · Pluppen/kjell · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
#include <unistd.h>
#include "shell.h"
#include "parser.h"
#include "scanner.h"
#include "node.h"
#include "source.h"

struct node_s *parse_simple_command(struct token_s *tok) {

    if(!tok) {
        return NULL;
    }

    struct node_s *cmd = new_node(NODE_COMMAND);
    if(!cmd) {
        free_token(tok);
        return NULL;
    }

    struct source_s *src = tok->src;

    do {
        if(tok->text[0] == '\n') {
            free_token(tok);
            break;
        }

        struct node_s *word = new_node(NODE_VAR);
        if(!word) {
            free_node_tree(cmd);
            free_token(tok);
            return NULL;
        }
        set_node_val_str(word, tok->text);
        add_child_node(cmd, word);

        free_token(tok);

    } while((tok = tokenize(src)) != &eof_token);

    return cmd;
}