|
1 package gnu.kawa.reflect;
2 import gnu.bytecode.*;
3 import gnu.mapping.*;
4 import gnu.expr.*;
5 import java.io.*;
6 import java.lang.reflect.Array  ;
7
8 public class ArrayGet extends Procedure2 implements Inlineable, Externalizable
9 {
10 Type element_type;
11
12 public ArrayGet (Type element_type)
13 {
14 this.element_type = element_type;
15 }
16
17 public Object apply2 (Object array, Object index)
18 {
19 Object value = Array.get(array, ((Number ) index).intValue());
20 return element_type.coerceToObject(value);
21 }
22 public void compile (ApplyExp exp, Compilation comp, Target target)
23 {
24 Expression[] args = exp.getArgs();
25 args[0].compile(comp, ArrayType.make(element_type));
26 args[1].compile(comp, Type.int_type);
27 CodeAttr code = comp.getCode();
28 code.emitArrayLoad(element_type);
29 target.compileFromStack(comp, element_type);
30 }
31
32 public gnu.bytecode.Type getReturnType (Expression[] args)
33 {
34 return element_type;
35 }
36
37 public void writeExternal(ObjectOutput out) throws IOException
38 {
39 out.writeObject(element_type);
40 }
41
42 public void readExternal(ObjectInput in)
43 throws IOException, ClassNotFoundException
44 {
45 element_type = (Type) in.readObject();
46 }
47 }
48 |
Popular Tags |
Java API By Example, From Geeks To Geeks.