01: /*****************************************************************************
02: * *
03: * This file is part of the BeanShell Java Scripting distribution. *
04: * Documentation and updates may be found at http://www.beanshell.org/ *
05: * *
06: * Sun Public License Notice: *
07: * *
08: * The contents of this file are subject to the Sun Public License Version *
09: * 1.0 (the "License"); you may not use this file except in compliance with *
10: * the License. A copy of the License is available at http://www.sun.com *
11: * *
12: * The Original Code is BeanShell. The Initial Developer of the Original *
13: * Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
14: * (C) 2000. All Rights Reserved. *
15: * *
16: * GNU Public License Notice: *
17: * *
18: * Alternatively, the contents of this file may be used under the terms of *
19: * the GNU Lesser General Public License (the "LGPL"), in which case the *
20: * provisions of LGPL are applicable instead of those above. If you wish to *
21: * allow use of your version of this file only under the terms of the LGPL *
22: * and not to allow others to use your version of this file under the SPL, *
23: * indicate your decision by deleting the provisions above and replace *
24: * them with the notice and other provisions required by the LGPL. If you *
25: * do not delete the provisions above, a recipient may use your version of *
26: * this file under either the SPL or the LGPL. *
27: * *
28: * Patrick Niemeyer (pat@pat.net) *
29: * Author of Learning Java, O'Reilly & Associates *
30: * http://www.pat.net/~pat/ *
31: * *
32: *****************************************************************************/package bsh;
33:
34: /**
35: */
36: class BSHClassDeclaration extends SimpleNode {
37: /**
38: The class instance initializer method name.
39: A BshMethod by this name is installed by the class delcaration into
40: the static class body namespace.
41: It is called once to initialize the static members of the class space
42: and each time an instances is created to initialize the instance
43: members.
44: */
45: static final String CLASSINITNAME = "_bshClassInit";
46:
47: String name;
48: Modifiers modifiers;
49: int numInterfaces;
50: boolean extend;
51: boolean isInterface;
52:
53: BSHClassDeclaration(int id) {
54: super (id);
55: }
56:
57: /**
58: */
59: public Object eval(CallStack callstack, Interpreter interpreter)
60: throws EvalError {
61: int child = 0;
62:
63: // resolve superclass if any
64: Class super Class = null;
65: if (extend) {
66: BSHAmbiguousName super Node = (BSHAmbiguousName) jjtGetChild(child++);
67: super Class = super Node.toClass(callstack, interpreter);
68: }
69:
70: // Get interfaces
71: Class[] interfaces = new Class[numInterfaces];
72: for (int i = 0; i < numInterfaces; i++) {
73: BSHAmbiguousName node = (BSHAmbiguousName) jjtGetChild(child++);
74: interfaces[i] = node.toClass(callstack, interpreter);
75: if (!interfaces[i].isInterface())
76: throw new EvalError("Type: " + node.text
77: + " is not an interface!", this , callstack);
78: }
79:
80: BSHBlock block;
81: // Get the class body BSHBlock
82: if (child < jjtGetNumChildren())
83: block = (BSHBlock) jjtGetChild(child);
84: else
85: block = new BSHBlock(ParserTreeConstants.JJTBLOCK);
86:
87: try {
88: return ClassGenerator.getClassGenerator().generateClass(
89: name, modifiers, interfaces, super Class, block,
90: isInterface, callstack, interpreter);
91: } catch (UtilEvalError e) {
92: throw e.toEvalError(this , callstack);
93: }
94: }
95:
96: public String toString() {
97: return "ClassDeclaration: " + name;
98: }
99: }
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