internal override IEnumerable <NameExpression> Walk()
{
List <NameExpression> freeVars = new List <NameExpression>();
freeVars.AddRange(Initializer?.Walk() ?? new NameExpression[0]);
freeVars.AddRange(Condition?.Walk() ?? new NameExpression[0]);
freeVars.AddRange(Incrementor?.Walk() ?? new NameExpression[0]);
freeVars.AddRange(Body.Walk());
if (Initializer is Definition definition)
{
List <Variable> initializerVariable = new List <Variable>
{
definition.DeclaredVariable
};
Compiler.MatchVariables(freeVars, initializerVariable);
}
return(freeVars);
}
