bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRQuery.java

   1 package org.simantics.scl.compiler.elaboration.chr;
   2
   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.contexts.SimplificationContext;
   7 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
   8 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
   9 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  10 import org.simantics.scl.compiler.elaboration.expressions.Variable;
  11 import org.simantics.scl.compiler.elaboration.expressions.VariableProcedure;
  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
  16 import gnu.trove.map.hash.TObjectIntHashMap;
  17 import gnu.trove.set.hash.THashSet;
  18 import gnu.trove.set.hash.TIntHashSet;
  19
  20 public class CHRQuery extends Symbol {
  21     public CHRLiteral[] literals;
  22
  23     public CHRQuery(CHRLiteral[] literals) {
  24         this.literals = literals;
  25     }
  26
  27     public void resolve(TranslationContext context) {
  28         for(CHRLiteral literal : literals)
  29             literal.resolve(context);
  30     }
  31
  32     public void collectRefs(TObjectIntHashMap<Object> allRefs, TIntHashSet refs) {
  33         for(CHRLiteral literal : literals)
  34             literal.collectRefs(allRefs, refs);
  35     }
  36
  37     public void checkType(TypingContext context) {
  38         for(CHRLiteral literal : literals)
  39             literal.checkType(context);
  40     }
  41
  42     public void collectVars(TObjectIntHashMap<Variable> allVars, TIntHashSet vars) {
  43         for(CHRLiteral literal : literals)
  44             literal.collectVars(allVars, vars);
  45     }
  46
  47     public void forVariables(VariableProcedure procedure) {
  48         for(CHRLiteral literal : literals)
  49             literal.forVariables(procedure);
  50     }
  51
  52     public void collectFreeVariables(THashSet<Variable> vars) {
  53         for(CHRLiteral literal : literals)
  54             literal.collectFreeVariables(vars);
  55     }
  56
  57     public void setLocationDeep(long loc) {
  58         if(location == Locations.NO_LOCATION) {
  59             this.location = loc;
  60             for(CHRLiteral literal : literals)
  61                 literal.setLocationDeep(loc);
  62         }
  63     }
  64
  65     public boolean createQueryPlan(QueryPlanningContext context, Expression inputFact, int activeLiteralId) {
  66         for(int i=0;i<literals.length;++i) {
  67             CHRLiteral literal = literals[i];
  68             if(i == activeLiteralId)
  69                 context.activate(literal, inputFact, i);
  70             else
  71                 context.add(literal, i);
  72         }
  73         return context.createQueryPlan();
  74     }
  75
  76     public void simplify(SimplificationContext context) {
  77         for(CHRLiteral literal : literals)
  78             literal.simplify(context);
  79     }
  80
  81     public void createEnforcePlan(QueryPlanningContext context, int priority) {
  82         context.addPlanOp(new PreCommitOp(location));
  83         for(CHRLiteral literal : literals)
  84             context.claim(context, literal);
  85         context.addPlanOp(new PostCommitOp(location, priority));
  86     }
  87
  88     public String toString() {
  89         StringBuilder b = new StringBuilder();
  90         ExpressionToStringVisitor visitor = new ExpressionToStringVisitor(b);
  91         visitor.visit(this);
  92         return b.toString();
  93     }
  94 }