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1 package polyglot.ext.jl.ast;
2
3 import polyglot.ast.*;
4 import polyglot.types.*;
5 import polyglot.visit.*;
6 import polyglot.util.*;
7 import java.util.*;
8
9
13 public class AmbAssign_c extends Assign_c implements AmbAssign
14 {
15 public AmbAssign_c(Position pos, Expr left, Operator op, Expr right) {
16 super(pos, left, op, right);
17 }
18
19 public Term entry() {
20 if (operator() != Assign.ASSIGN) {
21 return left();
22 }
23
24 return right().entry();
25 }
26
27 protected void acceptCFGAssign(CFGBuilder v) {
28 v.visitCFG(right(), this);
29 }
30
31 protected void acceptCFGOpAssign(CFGBuilder v) {
32 v.edge(left(), right().entry());
33 v.visitCFG(right(), this);
34 }
35
36 public Node disambiguate(AmbiguityRemover ar) throws SemanticException {
37 Assign n = (Assign) super.disambiguate(ar);
38
39 if (n.left() instanceof Local) {
40 return ar.nodeFactory().LocalAssign(n.position(), (Local)left(), operator(), right());
41 }
42 else if (n.left() instanceof Field) {
43 return ar.nodeFactory().FieldAssign(n.position(), (Field)left(), operator(), right());
44 }
45 else if (n.left() instanceof ArrayAccess) {
46 return ar.nodeFactory().ArrayAccessAssign(n.position(), (ArrayAccess)left(), operator(), right());
47 }
48
49 throw new SemanticException("Could not disambiguate left side of assignment!", n.position());
50 }
51
52 }
53 |
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