public override Expression VisitPrimaryExpression([NotNull] RuleEngineParser.PrimaryExpressionContext context)
{
var primaryExpressionStartContext = context.primaryExpressionStart();
var expression = VisitPrimaryExpressionStart(primaryExpressionStartContext);
var bracketExpressionContexts = context.bracketExpression();//Not Implemented
var memberAccessContexts = context.memberAccess();
var methodInvocationContexts = context.methodInvocation();
if (memberAccessContexts.Length > 0 || memberAccessContexts.Length > 0)
{
for (int i = 1; i < context.ChildCount; i++)
{
var parseTree = context.GetChild(i);
if (parseTree is RuleEngineParser.MemberAccessContext)
{
var constantExpression = VisitMemberAccess(parseTree as RuleEngineParser.MemberAccessContext) as ConstantExpression;
var parseTree1 = context.GetChild(i + 1);
if (parseTree1 is RuleEngineParser.MethodInvocationContext)
{
var blockExpression = VisitMethodInvocation(parseTree1 as RuleEngineParser.MethodInvocationContext) as BlockExpression;
expression = Expression.Call(expression, expression.Type.GetMethod(constantExpression.Value.ToString(), blockExpression.Expressions.Select(v => v.Type).ToArray()), blockExpression.Expressions);
i++;
}
else
{
expression = Expression.Property(expression, constantExpression.Value.ToString());
}
}
}
}
return(expression);
}
/// <summary>
/// Visit a parse tree produced by <see cref="RuleEngineParser.primaryExpression"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitPrimaryExpression([NotNull] RuleEngineParser.PrimaryExpressionContext context)
{
return(VisitChildren(context));
}
