blob: c17abe41d8bd0b28149bcd82ba0975570f5d35cf (
plain)
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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
package bjc.dicelang.v2;
import bjc.utils.funcdata.FunctionalList;
import bjc.utils.funcdata.IList;
import bjc.utils.esodata.Tape;
public class StreamEngine {
private DiceLangEngine eng;
private Tape<IList<String>> streams;
private IList<String> currStream;
public StreamEngine(DiceLangEngine eng) {
streams = new Tape<>();
currStream = new FunctionalList<>();
streams.append(currStream);
}
public boolean doStreams(String[] toks, IList<String> dest) {
for(String tk : toks) {
if(tk.startsWith("{@")) {
if(!processCommand(tk)) return false;
} else {
currStream.add(tk);
}
}
for(String tk : currStream.toIterable()) {
dest.add(tk);
}
return true;
}
private boolean processCommand(String tk) {
switch(tk.charAt(2)) {
case '+':
streams.append(new FunctionalList<>());
break;
case '>':
if(!streams.right()) {
System.out.println("\tERROR: Attempted to switch to non-existent stream");
return false;
}
currStream = streams.item();
break;
case '<':
if(!streams.left()) {
System.out.println("\tERROR: Attempted to switch to non-existent stream");
return false;
}
currStream = streams.item();
break;
case '-':
if(streams.size() == 1) {
System.out.println("\tERROR: Cannot delete last stream");
return false;
} else {
streams.remove();
currStream = streams.item();
}
break;
default:
System.out.println("\tERROR: Unknown stream control command: " + tk);
return false;
}
return true;
}
}
|
