SCL compiler generates line numbers to bytecode

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / elaboration / chr / plan / PlanContext.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/PlanContext.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/PlanContext.java
index d8cf92332da0a035b4ce86d126a8230dabedea53..62bcfc9581fd9650c4d869c4c0a7b759e423de2a 100644 (file)
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/PlanContext.java
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/plan/PlanContext.java
@@ -6,10 +6,15 @@ import org.simantics.scl.compiler.compilation.CompilationContext;
 import org.simantics.scl.compiler.constants.IntegerConstant;
 import org.simantics.scl.compiler.constants.JavaComparisonOperation;
 import org.simantics.scl.compiler.constants.singletons.IncreaseByOne;
+import org.simantics.scl.compiler.constants.singletons.JustConstant;
 import org.simantics.scl.compiler.constants.singletons.ListElement;
 import org.simantics.scl.compiler.constants.singletons.ListLength;
 import org.simantics.scl.compiler.elaboration.chr.CHRRuleset;
+import org.simantics.scl.compiler.elaboration.chr.relations.CHRConstraint;
 import org.simantics.scl.compiler.elaboration.expressions.Variable;
+import org.simantics.scl.compiler.elaboration.expressions.block.IncludeStatement;
+import org.simantics.scl.compiler.elaboration.java.EqualsFunction;
+import org.simantics.scl.compiler.internal.codegen.continuations.Branch;
 import org.simantics.scl.compiler.internal.codegen.continuations.ICont;
 import org.simantics.scl.compiler.internal.codegen.references.IVal;
 import org.simantics.scl.compiler.internal.codegen.writer.CodeWriter;
@@ -19,21 +24,23 @@ import org.simantics.scl.compiler.types.Types;
 public abstract class PlanContext {
     public CompilationContext context;
     public CHRRuleset ruleset;
-    public IVal storeVar;
+    public IVal mainStoreVar;
+    public IVal contextVar;
     public ArrayList<PartnerFact> partnerFacts = new ArrayList<PartnerFact>();
     public IVal currentId;
     
-    public PlanContext(CompilationContext context, CHRRuleset ruleset, IVal storeVar) {
+    public PlanContext(CompilationContext context, CHRRuleset ruleset, IVal mainStoreVar, IVal contextVar) {
         this.context = context;
         this.ruleset = ruleset;
-        this.storeVar = storeVar;
+        this.mainStoreVar = mainStoreVar;
+        this.contextVar = contextVar;
     }
 
     public abstract void nextOp(CodeWriter w);
 
     public IVal generateNewId(long location, CodeWriter w) {
         if(currentId == null)
-            currentId = w.apply(location, ruleset.readCurrentId, storeVar);
+            currentId = w.apply(location, CHRRuleset.READ_CURRENT_ID, contextVar);
         IVal result = currentId;
         currentId = w.apply(location, IncreaseByOne.INSTANCE, currentId);
         return result;
@@ -47,25 +54,76 @@ public abstract class PlanContext {
         ICont bodyContinuation = body.getContinuation();
         CodeWriter end = w.createBlock();
                 
-        w.jump(body.getContinuation(), IntegerConstant.ZERO);
+        w.jump(location, body.getContinuation(), IntegerConstant.ZERO);
         
         IVal index = body.getParameters()[0];
-        body.branchAwayIf(body.apply(location, JavaComparisonOperation.IEQUAL, index, listLength),
+        body.branchAwayIf(location, body.apply(location, JavaComparisonOperation.IEQUAL, index, listLength),
                 end.getContinuation());
         variable.setVal(body.apply(location, ListElement.INSTANCE.createSpecialization(componentType), listValue, index));
         nextOp(body);
         if(body.isUnfinished())
-            body.jump(bodyContinuation, body.apply(location, IncreaseByOne.INSTANCE, index));
+            body.jump(location, bodyContinuation, body.apply(location, IncreaseByOne.INSTANCE, index));
+        
+        w.continueAs(end);
+    }
+    
+    public void iterateMaybe(long location, CodeWriter w, Variable variable, IVal maybeValue) {
+        Type componentType = variable.getType();
+
+        CodeWriter end = w.createBlock();
+        CodeWriter body = w.createBlock(componentType);
+        w.switch_(location, maybeValue, new Branch[] {
+                new Branch(JustConstant.INSTANCE, body.getContinuation()),
+                new Branch(null, end.getContinuation())
+        });
+        
+        variable.setVal(body.getParameters()[0]);
+        nextOp(body);
+        if(body.isUnfinished())
+            body.jump(location, end.getContinuation());
         
         w.continueAs(end);
     }
 
     public void check(long location, CodeWriter w, IVal booleanValue) {
         CodeWriter end = w.createBlock();
-        w.branchAwayUnless(booleanValue, end.getContinuation());
+        w.branchAwayUnless(location, booleanValue, end.getContinuation());
         nextOp(w);
         if(w.isUnfinished())
-            w.jump(end.getContinuation());
+            w.jump(location, end.getContinuation());
+        w.continueAs(end);
+    }
+
+    public void checkEquals(long location, CodeWriter w, IVal a, IVal b) {
+        check(location, w, w.apply(location,
+                EqualsFunction.INSTANCE.createSpecialization(a.getType()),
+                a, b));
+    }
+    
+    public void checkEqualsJust(long location, CodeWriter w, IVal value, IVal maybeValue) {
+        Type componentType = value.getType();
+
+        CodeWriter end = w.createBlock();
+        CodeWriter body = w.createBlock(componentType);
+        w.switch_(location, maybeValue, new Branch[] {
+                new Branch(JustConstant.INSTANCE, body.getContinuation()),
+                new Branch(null, end.getContinuation())
+        });
+        body.branchAwayUnless(location, body.apply(location,
+                EqualsFunction.INSTANCE.createSpecialization(componentType),
+                value, body.getParameters()[0]), end.getContinuation());
+        nextOp(body);
+        if(body.isUnfinished())
+            body.jump(location, end.getContinuation());
+        
         w.continueAs(end);
     }
+
+    public IVal getStoreVar(CHRConstraint constraint) {
+        IncludeStatement includeStatement = ruleset.constraintSourceMap.get(constraint);
+        if(includeStatement != null)
+            return includeStatement.storeVar;
+        else
+            return mainStoreVar;
+    }
 }