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%2FCHRLiteral.java;h=918dd9fb309ef25d4d9dfd3f156e60b7d4b097e5;hb=e83a15c556c27b56e856dc26fa4e2d792cf959be;hp=b34328a53ebb494d0586d331b712b9c361bcb6ab;hpb=bf540e621923947f9d6f4d5eeef5d05f08373125;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRLiteral.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRLiteral.java
index b34328a53..918dd9fb3 100644
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRLiteral.java
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/CHRLiteral.java
@@ -7,11 +7,14 @@ import org.simantics.scl.compiler.elaboration.chr.relations.SpecialCHRRelation;
 import org.simantics.scl.compiler.elaboration.chr.relations.UnresolvedCHRRelation;
 import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext.ExistentialFrame;
 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
+import org.simantics.scl.compiler.elaboration.expressions.ERecord;
 import org.simantics.scl.compiler.elaboration.expressions.Expression;
 import org.simantics.scl.compiler.elaboration.expressions.Variable;
 import org.simantics.scl.compiler.elaboration.expressions.VariableProcedure;
 import org.simantics.scl.compiler.elaboration.expressions.printing.ExpressionToStringVisitor;
+import org.simantics.scl.compiler.elaboration.expressions.records.FieldAssignment;
 import org.simantics.scl.compiler.elaboration.relations.SCLRelation;
 import org.simantics.scl.compiler.errors.Locations;
 import org.simantics.scl.compiler.internal.parsing.Symbol;
@@ -29,6 +32,7 @@ public class CHRLiteral extends Symbol {
     public CHRRelation relation;
     public Type[] typeParameters;
     public Expression[] parameters;
+    public FieldAssignment[] fields; // optional
     public Expression[] typeConstraintEvidenceParameters;
     public boolean killAfterMatch;
     public boolean negated;
@@ -43,6 +47,15 @@ public class CHRLiteral extends Symbol {
     }
 
     public void resolve(TranslationContext context) {
+        if(relation == SpecialCHRRelation.ASSIGN) {
+            parameters[1] = parameters[1].resolve(context);
+            parameters[0] = parameters[0].resolveAsPattern(context);
+            return;
+        }
+        if(parameters != null) {
+            for(int i=0;i<parameters.length;++i)
+                parameters[i] = parameters[i].resolve(context);
+        }
         if(relation instanceof UnresolvedCHRRelation) {
             UnresolvedCHRRelation unresolved = (UnresolvedCHRRelation)relation;
             CHRConstraint constraint = context.resolveCHRConstraint(unresolved.name);
@@ -55,6 +68,14 @@ public class CHRLiteral extends Symbol {
                 if(sclRelation != null)
                     relation = new ExternalCHRRelation(sclRelation);
                 else {
+                    if(unresolved.name.contains(".")) {
+                        context.getErrorLog().log(unresolved.location, "Couldn't resolve relation " + unresolved.name + ".");
+                        return;
+                    }   
+                    if(parameters == null) {
+                        context.getErrorLog().log(location, "Relation must be declared if record syntax is used.");
+                        return;
+                    }
                     Type[] parameterTypes = new Type[parameters.length];
                     for(int i=0;i<parameterTypes.length;++i)
                         parameterTypes[i] = Types.metaVar(Kinds.STAR);
@@ -67,8 +88,29 @@ public class CHRLiteral extends Symbol {
                 }
             }
         }
-        for(int i=0;i<parameters.length;++i)
-            parameters[i] = parameters[i].resolve(context);
+        if(parameters == null && fields != null) {
+            String[] fieldNames = relation.getFieldNames();
+            if(fieldNames == null) {
+                context.getErrorLog().log(location, "Relation " + relation + " does not define field names.");
+                return;
+            }
+            parameters = ERecord.translateFieldsToFunctionParameters(context, fields, fieldNames);
+            if(parameters == null)
+                return;
+            for(int i=0;i<parameters.length;++i) {
+                Expression parameter = parameters[i];
+                if(parameter == null) {
+                    ExistentialFrame frame = context.getCurrentExistentialFrame();
+                    if(frame == null || frame.disallowNewExistentials)
+                        context.getErrorLog().log(location, "Field " + fieldNames[i] + " not defined.");
+                    else
+                        parameters[i] = frame.createBlank(location);
+                }
+                else
+                    parameters[i] = parameters[i].resolve(context);
+            }
+            fields = null;
+        }
     }
 
     public void collectRefs(TObjectIntHashMap<Object> allRefs, TIntHashSet refs) {
@@ -86,6 +128,11 @@ public class CHRLiteral extends Symbol {
             parameters[0] = parameters[0].checkIgnoredType(context);
             typeConstraintEvidenceParameters = Expression.EMPTY_ARRAY;
         }
+        else if(relation == SpecialCHRRelation.ASSIGN) {
+            parameters[1] = parameters[1].inferType(context);
+            parameters[0] = parameters[0].checkTypeAsPattern(context, parameters[1].getType());
+            typeConstraintEvidenceParameters = Expression.EMPTY_ARRAY;
+        }
         else {
             TVar[] typeVariables = relation.getTypeVariables();
             typeParameters = typeVariables.length == 0 ? Type.EMPTY_ARRAY : new Type[typeVariables.length];
@@ -119,11 +166,16 @@ public class CHRLiteral extends Symbol {
     }
 
     public void collectFreeVariables(THashSet<Variable> vars) {
-        for(Expression parameter : parameters)
-            parameter.collectFreeVariables(vars);
-        if(typeConstraintEvidenceParameters != null)
-            for(Expression parameter : typeConstraintEvidenceParameters)
+        if(relation == SpecialCHRRelation.ASSIGN) {
+            parameters[1].collectFreeVariables(vars);
+        }
+        else {
+            for(Expression parameter : parameters)
                 parameter.collectFreeVariables(vars);
+            if(typeConstraintEvidenceParameters != null)
+                for(Expression parameter : typeConstraintEvidenceParameters)
+                    parameter.collectFreeVariables(vars);
+        }
     }
 
     public void setLocationDeep(long loc) {
@@ -150,8 +202,10 @@ public class CHRLiteral extends Symbol {
     }
 
     public void collectQueryEffects(THashSet<Type> effects) {
+        // TODO
     }
 
     public void collectEnforceEffects(THashSet<Type> effects) {
+        // TODO
     }
 }