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1 package ro.infoiasi.donald.compiler.cfg;
2
3
4 public abstract class Symbol {
5 protected String  name;
6 protected int index;
7 protected String type;
8
9 public Symbol(String name, int index, String type) {
10 this.name = name;
11 this.index = index;
12 this.type = type;
13 }
14
15 public Symbol(String name, int index) {
16 this(name, index, null);
17 }
18
19 public String getName() {
20 return name;
21 }
22
23 public int getIndex() {
24 return index;
25 }
26
27 public String getType() {
28 return type;
29 }
30
31
32 void setIndex(int index) {
33 this.index = index;
34 }
35
36 public boolean equals(Object o) {
37 return (o instanceof Symbol &&
38 name.equals(((Symbol)o).name) &&
39 index == ((Symbol)o).index);
40 }
41
42 public int hashCode() {
43 return isTerminal()? -index: +index;
44 }
45
46 public String toString() {
47 return getName();
48 }
49
50 public abstract boolean isTerminal();
51 }
52 |
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