org.snapscript.tree.constraint.GenericParameterExtractor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of snap Show documentation

Dynamic scripting for the JVM

The newest version!

package org.snapscript.tree.constraint;

import static org.snapscript.core.scope.extract.ScopePolicy.COMPILE_GENERICS;

import java.util.List;

import org.snapscript.core.constraint.Constraint;
import org.snapscript.core.scope.Scope;
import org.snapscript.core.scope.extract.ScopePolicyExtractor;
import org.snapscript.core.scope.index.Address;
import org.snapscript.core.scope.index.AddressCache;
import org.snapscript.core.scope.index.ScopeTable;

public class GenericParameterExtractor {
   
   private final ScopePolicyExtractor extractor;
   private final GenericList generics;
   
   public GenericParameterExtractor(GenericList generics) {
      this.extractor = new ScopePolicyExtractor(COMPILE_GENERICS);
      this.generics = generics;
   }

   public Scope extract(Scope local) throws Exception {
      List constraints = generics.getGenerics(local);
      Scope scope = extractor.extract(local);
      ScopeTable table = scope.getTable();
      int size = constraints.size();

      for(int i = 0; i < size; i++) {
         Constraint constraint = constraints.get(i);
         Address address = AddressCache.getAddress(i);
         
         table.addConstraint(address, constraint);
      }
      return scope;
   }
}