5 public class RelationQuantifier extends Quantifier {
7 RelationDescriptor relation;
8 VarDescriptor x, y; // y = x.relation
10 public RelationQuantifier() {}
12 public void setRelation(RelationDescriptor rd) {
16 public RelationDescriptor getRelation() {
20 public void setTuple(VarDescriptor x, VarDescriptor y) {
25 public Set getRequiredDescriptors() {
26 HashSet v = new HashSet();
31 public String toString() {
32 return "relation quantifier <" + x.getSymbol() + "," + y.getSymbol() + "> in " + relation.getSymbol();
35 public void generate_open(CodeWriter writer) {
36 writer.addDeclaration("struct SimpleIterator",x.getSafeSymbol()+"_iterator");
37 writer.outputline("for (SimpleHashiterator("+relation.getSafeSymbol()+"_hash, &"+x.getSafeSymbol()+"_iterator); hasNext(&"+x.getSafeSymbol()+"_iterator); )");
39 writer.addDeclaration(y.getType().getGenerateType().toString(), y.getSafeSymbol());
40 writer.outputline(y.getSafeSymbol() + " = (" + y.getType().getGenerateType() + ") next(&"+x.getSafeSymbol()+"_iterator);");
41 // #ATTN#: key is called second because next() forwards ptr and key does not!
42 writer.addDeclaration(x.getType().getGenerateType().toString(), x.getSafeSymbol());
43 writer.outputline(x.getSafeSymbol() + " = (" + x.getType().getGenerateType() + ") key(&"+x.getSafeSymbol()+"_iterator);");
46 public void generate_open(CodeWriter writer, String type,int number, String left,String right) {
47 VarDescriptor tmp=VarDescriptor.makeNew("flag");
48 writer.addDeclaration("struct SimpleIterator", x.getSafeSymbol() + "_iterator");
49 writer.outputline("SimpleHashiterator("+relation.getSafeSymbol()+"_hash,& "+x.getSafeSymbol()+"_iterator);");
50 writer.addDeclaration("int",tmp.getSafeSymbol());
51 writer.outputline(tmp.getSafeSymbol()+"=0;");
52 writer.outputline("if ("+type+"=="+number+")");
53 writer.outputline(tmp.getSafeSymbol()+"=1;");
55 writer.outputline("while("+tmp.getSafeSymbol()+"||(("+type+"!="+number+")&& hasNext(&"+x.getSafeSymbol()+"_iterator)))");
57 writer.addDeclaration(x.getType().getGenerateType().toString(), x.getSafeSymbol());
58 writer.addDeclaration(y.getType().getGenerateType().toString(), y.getSafeSymbol());
59 writer.outputline("if ("+type+"=="+number+")");
61 writer.outputline(tmp.getSafeSymbol()+"=0;");
62 writer.outputline(x.getSafeSymbol() + " = (" + x.getType().getGenerateType() + ") " + left + ";");
63 writer.outputline(y.getSafeSymbol() + " = (" + y.getType().getGenerateType() + ") " + right + ";");
65 writer.outputline("else");
67 writer.outputline(y.getSafeSymbol() + " = (" + y.getType().getGenerateType() + ") next(&"+x.getSafeSymbol()+"_iterator);");
68 writer.outputline(x.getSafeSymbol() + " = (" + x.getType().getGenerateType() + ") key(&"+x.getSafeSymbol()+"_iterator);");
72 public int generate_worklistload(CodeWriter writer, int offset) {
73 String varx = x.getSafeSymbol();
74 String vary = y.getSafeSymbol();
75 writer.outputline("int " + varx + " = wi->word" + offset + "; /* r1*/");
76 writer.outputline("int " + vary + " = wi->word" + (offset + 1) + "; /*r2*/");
80 public int generate_workliststore(CodeWriter writer, int offset) {
81 String varx = x.getSafeSymbol();
82 String vary = y.getSafeSymbol();
83 writer.outputline("wi->word" + offset + " = " + varx + "; /* r1*/");
84 writer.outputline("wi->word" + (offset+1) + " = " + vary + "; /* r2*/");