01: /*
02: * $Id: AndNode.java,v 1.5 2002/09/16 08:05:04 jkl Exp $
03: *
04: * Copyright (c) 2002 Njet Communications Ltd. All Rights Reserved.
05: *
06: * Use is subject to license terms, as defined in
07: * Anvil Sofware License, Version 1.1. See LICENSE
08: * file, or http://njet.org/license-1.1.txt
09: */
10: package anvil.script.expression;
11:
12: import anvil.core.Any;
13: import anvil.codec.Code;
14: import anvil.codec.Source;
15: import anvil.script.compiler.ByteCompiler;
16: import anvil.script.Context;
17: import java.io.IOException;
18:
19: /**
20: * class AndNode
21: *
22: * @author: Jani Lehtimäki
23: */
24: public class AndNode extends BinaryParent {
25: public AndNode(Node left, Node right) {
26: super (left, right);
27: }
28:
29: public int typeOf() {
30: return Node.EXPR_AND;
31: }
32:
33: public Any eval() {
34: return Any.create(_left.eval().toBoolean()
35: && _right.eval().toBoolean());
36: }
37:
38: public void compile(ByteCompiler context, int operation) {
39: Code code = context.getCode();
40: _left.compile(context, GET_BOOLEAN);
41: code.dup();
42: Source source = code.if_eq();
43: code.pop();
44: _right.compile(context, GET_BOOLEAN);
45: source.bind();
46: if (operation != GET_BOOLEAN) {
47: context.boolean2any();
48: }
49: }
50:
51: }
|