1 package org.simantics.scl.compiler.elaboration.chr;
3 import org.simantics.scl.compiler.elaboration.chr.plan.PostCommitOp;
4 import org.simantics.scl.compiler.elaboration.chr.plan.PreCommitOp;
5 import org.simantics.scl.compiler.elaboration.chr.planning.QueryPlanningContext;
6 import org.simantics.scl.compiler.elaboration.chr.relations.CHRConstraint;
7 import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
8 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
9 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
10 import org.simantics.scl.compiler.elaboration.expressions.Expression;
11 import org.simantics.scl.compiler.elaboration.expressions.Variable;
12 import org.simantics.scl.compiler.elaboration.expressions.printing.ExpressionToStringVisitor;
13 import org.simantics.scl.compiler.errors.Locations;
14 import org.simantics.scl.compiler.internal.parsing.Symbol;
15 import org.simantics.scl.compiler.types.Type;
17 import gnu.trove.map.hash.TObjectIntHashMap;
18 import gnu.trove.set.hash.THashSet;
19 import gnu.trove.set.hash.TIntHashSet;
21 public class CHRQuery extends Symbol {
22 public CHRLiteral[] literals;
24 public CHRQuery(CHRLiteral[] literals) {
25 this.literals = literals;
28 public void resolve(TranslationContext context) {
29 for(CHRLiteral literal : literals)
30 literal.resolve(context);
33 public void checkType(TypingContext context) {
34 for(CHRLiteral literal : literals)
35 literal.checkType(context);
38 public void collectVars(TObjectIntHashMap<Variable> allVars, TIntHashSet vars) {
39 for(CHRLiteral literal : literals)
40 literal.collectVars(allVars, vars);
43 public void setLocationDeep(long loc) {
44 if(location == Locations.NO_LOCATION) {
46 for(CHRLiteral literal : literals)
47 literal.setLocationDeep(loc);
51 public boolean createQueryPlan(QueryPlanningContext context, Expression inputFact, int activeLiteralId, CHRConstraint initConstraint) {
52 for(int i=0;i<literals.length;++i) {
53 CHRLiteral literal = literals[i];
54 if(i == activeLiteralId)
55 context.activate(literal, inputFact, i);
57 context.add(literal, i);
59 if(activeLiteralId == -1 && inputFact != null) {
60 context.addInitFact(initConstraint, inputFact);
62 return context.createQueryPlan();
65 public void simplify(SimplificationContext context) {
66 for(CHRLiteral literal : literals)
67 literal.simplify(context);
70 public void createEnforcePlan(QueryPlanningContext context, int priority) {
71 context.addPlanOp(new PreCommitOp(location));
72 for(CHRLiteral literal : literals)
73 context.claim(context, literal);
74 context.addPlanOp(new PostCommitOp(location, priority));
77 public String toString() {
78 StringBuilder b = new StringBuilder();
79 ExpressionToStringVisitor visitor = new ExpressionToStringVisitor(b);
84 public void collectQueryEffects(THashSet<Type> effects) {
85 for(CHRLiteral literal : literals)
86 literal.collectQueryEffects(effects);
89 public void collectEnforceEffects(THashSet<Type> effects) {
90 for(CHRLiteral literal : literals)
91 literal.collectEnforceEffects(effects);