X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Felaboration%2Fchr%2FCHRQuery.java;h=6b01d99531f9d30db25fe0277e0f98d435632729;hb=08a43c849e0bed256394e3861326af9ce26a9917;hp=2d97ab51819e4d271cea111e42050878da58c6a2;hpb=5f777aa757a8eef106aeaf621d3b030162fa6bb8;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRQuery.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRQuery.java
index 2d97ab518..6b01d9953 100644
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRQuery.java
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRQuery.java
@@ -1,5 +1,6 @@
 package org.simantics.scl.compiler.elaboration.chr;
 
+import org.simantics.scl.compiler.common.exceptions.InternalCompilerError;
 import org.simantics.scl.compiler.elaboration.chr.plan.PostCommitOp;
 import org.simantics.scl.compiler.elaboration.chr.plan.PreCommitOp;
 import org.simantics.scl.compiler.elaboration.chr.planning.QueryPlanningContext;
@@ -9,8 +10,11 @@ import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
 import org.simantics.scl.compiler.elaboration.expressions.Expression;
+import org.simantics.scl.compiler.elaboration.expressions.ExpressionVisitor;
 import org.simantics.scl.compiler.elaboration.expressions.Variable;
 import org.simantics.scl.compiler.elaboration.expressions.printing.ExpressionToStringVisitor;
+import org.simantics.scl.compiler.elaboration.expressions.visitors.ForVariablesUsesVisitor;
+import org.simantics.scl.compiler.elaboration.expressions.visitors.StandardExpressionVisitor;
 import org.simantics.scl.compiler.errors.Locations;
 import org.simantics.scl.compiler.internal.parsing.Symbol;
 
@@ -20,8 +24,9 @@ import gnu.trove.set.hash.TIntHashSet;
 public class CHRQuery extends Symbol {
     public CHRLiteral[] literals;
 
-    public CHRQuery(CHRLiteral[] literals) {
+    public CHRQuery(long location, CHRLiteral[] literals) {
         this.literals = literals;
+        this.location = location;
     }
 
     public void resolve(TranslationContext context) {
@@ -48,17 +53,21 @@ public class CHRQuery extends Symbol {
     }
     
     public boolean createQueryPlan(QueryPlanningContext context, Expression inputFact, int activeLiteralId, CHRConstraint initConstraint) {
-        for(int i=0;i<literals.length;++i) {
-            CHRLiteral literal = literals[i];
-            if(i == activeLiteralId)
-                context.activate(literal, inputFact, i);
-            else
-                context.add(literal, i);
+        try {
+            for(int i=0;i<literals.length;++i) {
+                CHRLiteral literal = literals[i];
+                if(i == activeLiteralId)
+                    context.activate(literal, inputFact, i);
+                else
+                    context.add(literal, i);
+            }
+            if(activeLiteralId == -1 && inputFact != null) {
+                context.addInitFact(initConstraint, inputFact);
+            }	
+            return context.createQueryPlan();
+        } catch(Exception e) {
+            throw InternalCompilerError.injectLocation(location, e);
         }
-        if(activeLiteralId == -1 && inputFact != null) {
-            context.addInitFact(initConstraint, inputFact);
-        }	
-        return context.createQueryPlan();
     }
     
     public void simplify(SimplificationContext context) {
@@ -84,6 +93,18 @@ public class CHRQuery extends Symbol {
         CHRLiteral[] newLiterals = new CHRLiteral[literals.length];
         for(int i=0;i<literals.length;++i)
             newLiterals[i] = literals[i].replace(context);
-        return new CHRQuery(newLiterals);
+        return new CHRQuery(location, newLiterals);
+    }
+    
+    public void accept(ExpressionVisitor visitor) {
+        for(CHRLiteral literal : literals) {
+            if(literal == null || literal.parameters == null)
+                continue; // FIXME why this happens?
+            for(Expression parameter : literal.parameters) {
+                if(parameter == null)
+                    continue; // FIXME why this happens?
+                parameter.accept(visitor);
+            }
+        }
     }
 }