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package com.bpodgursky.jbool_expressions.eval;

import com.bpodgursky.jbool_expressions.Expression;
import com.bpodgursky.jbool_expressions.Variable;

import java.util.Map;

public class EvalVariable extends EvalRule {

  private final Map values;
  public EvalVariable(Map valueMap){
    this.values = valueMap;
  }

  @Override
  public boolean evaluate(Expression expression, Map> rules) {
    Variable var = (Variable) expression;
    if(!values.containsKey(var.getValue())){
      throw new RuntimeException("value not specified for variable: "+var);
    }
    return values.get(var.getValue());
  }
}