/// <inheritdoc />
public override Expression VisitConstant(
fhirExpression.ConstantExpression expression,
fhirExpression.SymbolTable scope)
{
if (expression.ExpressionType == TypeSpecifier.Integer)
{
return(Expression.Constant((int)expression.Value));
}
if (expression.ExpressionType == TypeSpecifier.String)
{
var propertyName = expression.Value.ToString();
var property = GetProperty(_parameter.Type, propertyName);
return(property == null
? (Expression)_parameter
: Expression.Property(_parameter, property));
}
return(null);
}
/// <inheritdoc />
public override Expression VisitFunctionCall(
fhirExpression.FunctionCallExpression expression,
fhirExpression.SymbolTable scope)
{
switch (expression)
{
case fhirExpression.IndexerExpression indexerExpression:
{
var index = indexerExpression.Index.Accept(this, scope);
var property = indexerExpression.Focus.Accept(this, scope);
var itemProperty = GetProperty(property.Type, "Item");
return(Expression.MakeIndex(property, itemProperty, new[] { index }));
}
case fhirExpression.ChildExpression child:
{
return(child.Arguments.First().Accept(this, scope));
}
default:
return(_parameter);
}
}
/// <inheritdoc />
public override Expression VisitVariableRef(fhirExpression.VariableRefExpression expression, fhirExpression.SymbolTable scope)
{
return(_parameter);
}
/// <inheritdoc />
public override Expression VisitNewNodeListInit(
fhirExpression.NewNodeListInitExpression expression,
fhirExpression.SymbolTable scope)
{
return(_parameter);
}
