IPOContextStack.java

package org.overture.pog.pub;

import java.util.Map;

import org.overture.ast.expressions.AVariableExp;
import org.overture.ast.expressions.PExp;
import org.overture.ast.intf.lex.ILexNameToken;
import org.overture.ast.types.PType;
import org.overture.pog.utility.UniqueNameGenerator;

public interface IPOContextStack
{

	public IPOContext push(IPOContext context);

	public IPOContext pop();

	public int size();

	PType checkType(PExp exp, PType expected);

	void noteType(PExp exp, PType PType);

	public abstract PExp getPredWithContext(PExp initialPredicate);

	public abstract String getName();

	public abstract String getObligation(String root);

	public void clearStateContexts();

	public void setGenerator(UniqueNameGenerator gen);

	public UniqueNameGenerator getGenerator();

	public Map<ILexNameToken, AVariableExp> getLast_Vars();

}