blob: 207eeea41969452ef07a5314718c6d30b950488b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
package scalac.transformer.matching ;
import scalac.util.Name ;
import scalac.ast.Tree ;
import scalac.symtab.Symbol ;
import java.util.HashSet;
class CollectVariableTraverser extends VariableTraverser {
protected HashSet nogeneratedVars;
protected HashSet vars;
/*
boolean isVariableName( Name name ) {
return ( name.toString().indexOf("$") == -1 )
&& super.isVariableName( name );
}
*/
void handleVariableSymbol( Symbol sym ) {
vars.add( sym );
if( sym.name.toString().indexOf("$") == -1 ) {
nogeneratedVars.add( sym );
}
}
public CollectVariableTraverser() {
this.vars = new HashSet();
this.nogeneratedVars = new HashSet();
}
static boolean containsBinding( Tree pat ) {
CollectVariableTraverser cvt = new CollectVariableTraverser();
cvt.traverse( pat );
return !cvt.nogeneratedVars.isEmpty();
}
static HashSet collectVars( Tree pat ) {
CollectVariableTraverser cvt = new CollectVariableTraverser();
cvt.traverse( pat );
return cvt.vars;
}
}
|
