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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
package st;
import syntaxtree.*;
import visitor.*;
import java.util.*;
import misc.*;
/**
* Performs a bottom-up preliminary visit through the AST
* initializing all ClassInstances and placing them in the passed ST
*/
public class SymTableClasses<R> extends GJDepthFirst<R,SymbolTable> {
/**
* f0 -> "class"
* f1 -> Identifier()
* f2 -> "{"
* f3 -> "public"
* f4 -> "static"
* f5 -> "void"
* f6 -> "main"
* f7 -> "("
* f8 -> "String"
* f9 -> "["
* f10 -> "]"
* f11 -> Identifier()
* f12 -> ")"
* f13 -> "{"
* f14 -> ( VarDeclaration() )*
* f15 -> ( Statement() )*
* f16 -> "}"
* f17 -> "}"
*/
public R visit(MainClass n, SymbolTable symt) {
n.f0.accept(this, symt);
n.f1.accept(this, symt);
n.f2.accept(this, symt);
n.f3.accept(this, symt);
n.f4.accept(this, symt);
n.f5.accept(this, symt);
n.f6.accept(this, symt);
n.f7.accept(this, symt);
n.f8.accept(this, symt);
n.f9.accept(this, symt);
n.f10.accept(this, symt);
n.f11.accept(this, symt);
n.f12.accept(this, symt);
n.f13.accept(this, symt);
n.f14.accept(this, symt);
n.f15.accept(this, symt);
n.f16.accept(this, symt);
n.f17.accept(this, symt);
TokenKey id = new TokenKey(n.f1.f0.tokenImage, null, null);
ClassInstance instance = new ClassInstance(id.getName());
symt.put(id, instance);
return null;
}
/**
* f0 -> "class"
* f1 -> Identifier()
* f2 -> "{"
* f3 -> ( VarDeclaration() )*
* f4 -> ( MethodDeclaration() )*
* f5 -> "}"
*/
public R visit(ClassDeclaration n, SymbolTable symt) {
n.f0.accept(this, symt);
n.f1.accept(this, symt);
n.f2.accept(this, symt);
n.f3.accept(this, symt);
n.f4.accept(this, symt);
n.f5.accept(this, symt);
TokenKey id = new TokenKey(n.f1.f0.tokenImage, null, null);
ClassInstance instance = new ClassInstance(id.getName());
symt.put(id, instance);
return null;
}
/**
* f0 -> "class"
* f1 -> Identifier()
* f2 -> "extends"
* f3 -> Identifier()
* f4 -> "{"
* f5 -> ( VarDeclaration() )*
* f6 -> ( MethodDeclaration() )*
* f7 -> "}"
*/
public R visit(ClassExtendsDeclaration n, SymbolTable symt) {
n.f0.accept(this, symt);
n.f1.accept(this, symt);
n.f2.accept(this, symt);
n.f3.accept(this, symt);
n.f4.accept(this, symt);
n.f5.accept(this, symt);
n.f6.accept(this, symt);
n.f7.accept(this, symt);
TokenKey id = new TokenKey(n.f1.f0.tokenImage, null, null);
ClassInstance instance = new ClassInstance(id.getName());
symt.put(id, instance);
return null;
}
}
|