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1 package kawa.standard;
2 import gnu.expr.*;
3 import gnu.lists.*;
4 import kawa.lang.*;
5 import gnu.bytecode.Type;
6
7 public class thisRef extends Syntax
8 {
9 public static final thisRef thisSyntax = new thisRef();
10 static { thisSyntax.setName("this"); }
11
12 public Expression rewriteForm (Pair form, Translator tr)
13 {
14 if (form.cdr == LList.Empty)
15 {
16 LambdaExp method = tr.curMethodLambda;
17 Declaration firstParam = method == null ? null : method.firstDecl();
18 if (firstParam == null || ! firstParam.isThisParameter())
19 {
20 firstParam = null;
21 if (method == null || method.nameDecl == null)
22 tr.error('e', "use of 'this' not in a named method");
23 else if (method.nameDecl.isStatic())
24 tr.error('e', "use of 'this' in a static method");
25 else
26 {
27 firstParam = new Declaration(ThisExp.THIS_NAME, (Type) null);
28 method.add(null, firstParam);
29 method.nameDecl.setFlag(Declaration.NONSTATIC_SPECIFIED);
30 }
31 }
32 return new ThisExp(firstParam);
33 }
34 else
35 return tr.syntaxError("this with parameter not implemented");
36 }
37 }
38 |
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