X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Felaboration%2Fcontexts%2FTypeTranslationContext.java;h=d107cb621a2dc9ff5ccceb18b4909643832151cd;hp=927720611de5cab6816d5b517223bea54ff34995;hb=4c2fb8fefbdec1856e160dc24b6498aa4bd5eb48;hpb=4bf8562ab7cbb3747f9c5844a07469291d43e905

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/contexts/TypeTranslationContext.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/contexts/TypeTranslationContext.java
index 927720611..d107cb621 100644
--- a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/contexts/TypeTranslationContext.java
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/contexts/TypeTranslationContext.java
@@ -6,6 +6,7 @@ import org.simantics.scl.compiler.errors.ErrorLog;
 import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;
 import org.simantics.scl.compiler.internal.parsing.types.TypeAst;
 import org.simantics.scl.compiler.types.TCon;
+import org.simantics.scl.compiler.types.TMetaVar;
 import org.simantics.scl.compiler.types.TPred;
 import org.simantics.scl.compiler.types.TVar;
 import org.simantics.scl.compiler.types.Type;
@@ -25,6 +26,7 @@ public class TypeTranslationContext {
     ErrorLog errorLog;    
     
     THashMap<String, TVar> typeVariables = new THashMap<String, TVar>();
+    THashMap<String, TMetaVar> existentials;
     
     public TypeTranslationContext(CompilationContext compilationContext) {
         this.compilationContext = compilationContext;
@@ -80,6 +82,19 @@ public class TypeTranslationContext {
         return var;
     }
 
+    public TMetaVar resolveExistential(long loc, String name, Kind expectedKind) {
+        if(existentials == null)
+            existentials = new THashMap<String, TMetaVar>();
+        TMetaVar var = existentials.get(name);
+        if(var == null) {
+            var = Types.metaVar(expectedKind);
+            existentials.put(name, var);
+        }        
+        else
+            unify(loc, var.getKind(), expectedKind);
+        return var;
+    }
+    
     public TVar pushTypeVar(String name) {
         return typeVariables.put(name, Types.var(Kinds.metaVar()));
     }
@@ -126,4 +141,8 @@ public class TypeTranslationContext {
             errorLog.log(loc, "Expected a type with kind " + expectedKind + " but got " + provided + ".");
         }
     }
+    
+    public CompilationContext getCompilationContext() {
+        return compilationContext;
+    }
 }