1 package serp.bytecode;
2
3 import serp.bytecode.visitor.*;
4
5 /***
6 * Code blocks compiled from source have local variable type tables mapping
7 * generics-using locals used in opcodes to their names and signatures.
8 *
9 * @author Abe White
10 */
11 public class LocalVariableTypeTable extends LocalTable {
12 LocalVariableTypeTable(int nameIndex, Attributes owner) {
13 super(nameIndex, owner);
14 }
15
16 /***
17 * Return all the locals of this method.
18 */
19 public LocalVariableType[] getLocalVariableTypes() {
20 return (LocalVariableType[]) getLocals();
21 }
22
23 /***
24 * Return the local with the given locals index, or null if none.
25 */
26 public LocalVariableType getLocalVariableType(int local) {
27 return (LocalVariableType) getLocal(local);
28 }
29
30 /***
31 * Return the local with the given name, or null if none. If multiple
32 * locals have the given name, which is returned is undefined.
33 */
34 public LocalVariableType getLocalVariableType(String name) {
35 return (LocalVariableType) getLocal(name);
36 }
37
38 /***
39 * Return all locals with the given name, or empty array if none.
40 */
41 public LocalVariableType[] getLocalVariableTypes(String name) {
42 return (LocalVariableType[]) getLocals(name);
43 }
44
45 /***
46 * Import a local from another method/class. Note that
47 * the program counter and length from the given local is copied
48 * directly, and thus will be incorrect unless this method is the same
49 * as the one the local is copied from, or the pc and length are reset.
50 */
51 public LocalVariableType addLocalVariableType(LocalVariableType local) {
52 return (LocalVariableType) addLocal(local);
53 }
54
55 /***
56 * Add a local to this table.
57 */
58 public LocalVariableType addLocalVariableType() {
59 return (LocalVariableType) addLocal();
60 }
61
62 /***
63 * Add a local to this table.
64 */
65 public LocalVariableType addLocalVariableType(String name, String type) {
66 return (LocalVariableType) addLocal(name, type);
67 }
68
69 public void acceptVisit(BCVisitor visit) {
70 visit.enterLocalVariableTypeTable(this);
71 LocalVariableType[] locals = (LocalVariableType[]) getLocals();
72 for (int i = 0; i < locals.length; i++)
73 locals[i].acceptVisit(visit);
74 visit.exitLocalVariableTypeTable(this);
75 }
76
77 protected Local newLocal() {
78 return new LocalVariableType(this);
79 }
80
81 protected Local[] newLocalArray(int size) {
82 return new LocalVariableType[size];
83 }
84 }