/// <summary>
/// Executed upon exiting expr rule
/// </summary>
/// <param name="context">the expr context</param>
public override void ExitExpr([NotNull] ParamExprGrammarParser.ExprContext context)
{
base.ExitExpr(context);
NodeProperty retExpr = new NodeProperty();
// value
if (context.GetChild(0) is ParamExprGrammarParser.ValueContext && context.children.Count == 1)
{
retExpr = GetNodePropertyValue(context.GetChild(0));
}
// | atomic_param
else if (context.GetChild(0) is ParamExprGrammarParser.Atomic_paramContext && context.children.Count == 1)
{
retExpr = GetNodePropertyValue(context.GetChild(0));
}
// | unary_operator expr
else if (context.GetChild(0) is ParamExprGrammarParser.Unary_operatorContext && context.ChildCount == 2)
{
retExpr = ParamExprResolver.ResolveExprUnaryOperator(context.GetChild(0).GetText(), GetNodePropertyValue(context.GetChild(1)));
}
// | expr ops expr
else if (context.GetChild(1) is ParamExprGrammarParser.OpsContext && context.ChildCount == 3)
{
retExpr = ParamExprResolver.ResolveExprOpsExpr(context.GetChild(0) as ParamExprGrammarParser.ExprContext, GetNodePropertyValue(context.GetChild(0)),
context.GetChild(1) as ParamExprGrammarParser.OpsContext, GetNodePropertyValue(context.GetChild(2)));
}
// | '(' expr ')' (power_op)?
else if (context.GetChild(0) is ITerminalNode && context.GetChild(2) is ITerminalNode)
{
int powerOp = +1;
if (context.ChildCount == 4)
{
powerOp = ParamExprResolver.GetPowerOp(context.GetChild(3) as ParamExprGrammarParser.Power_opContext);
}
retExpr = ParamExprResolver.ResolveExprPowerOp(GetNodePropertyValue(context.GetChild(1) as ParamExprGrammarParser.ExprContext), powerOp);
}
else
{
// Not valid rule, return nothing? or the original text?
}
SetNodePropertyValue(context, retExpr);
}
/// <summary>
/// Resolve "expr operator expr"
/// </summary>
/// <param name="expr1Ctx">context of expr 1</param>
/// <param name="expr1">NodeProperty of expr 1</param>
/// <param name="ops">operator</param>
/// <param name="expr2">NodeProperty of expr 2</param>
/// <returns>NodeProperty</returns>
public static NodeProperty ResolveExprOpsExpr(ParamExprGrammarParser.ExprContext expr1Ctx, NodeProperty expr1,
ParamExprGrammarParser.OpsContext ops, NodeProperty expr2)
{
NodeProperty ret = new NodeProperty();
ret.originalNodePropertyValue = expr1.originalNodePropertyValue + " " + ops.GetText() + " " + expr2.originalNodePropertyValue;
if (expr1.nodePropertyValue == null && expr2.nodePropertyValue == null)
{
return(ret);
}
if (expr1.nodePropertyValue == null)
{
// expr1 is null, the ops is undefined, returns only expr2 as it is
ret.nodePropertyValue = expr2.nodePropertyValue;
return(ret);
}
if (expr2.nodePropertyValue == null)
{
// expr2 is null, ops is undefined, returns only expr1 as it is
ret.nodePropertyValue = expr1.nodePropertyValue;
return(ret);
}
if (expr1.nodePropertyValue is ElementId || expr2.nodePropertyValue is ElementId)
{
// For ElementId to be in this oper, the Name of the Element will be used and the rest will be converted to strings
string expr1Str = null;
if (expr1.nodePropertyValue is ElementId)
{
expr1Str = _element.Document.GetElement((ElementId)expr1.nodePropertyValue).Name;
}
else
{
expr1Str = expr1.nodePropertyValue.ToString();
}
string expr2Str = null;
if (expr2.nodePropertyValue is ElementId)
{
expr2Str = _element.Document.GetElement((ElementId)expr2.nodePropertyValue).Name;
}
else
{
expr2Str = expr2.nodePropertyValue.ToString();
}
//ret.nodePropertyValue = expr1Str + " " + ops.GetText() + " " + expr2Str;
ret.nodePropertyValue = expr1Str + expr2Str;
}
else if (expr1.nodePropertyValue is string || expr2.nodePropertyValue is string)
{
// one of the expr is a string, and therefore the entire expr will returns string
//ret.nodePropertyValue = expr1.nodePropertyValue.ToString() + " " + ops.GetText() + " " + expr2.nodePropertyValue.ToString();
ret.nodePropertyValue = expr1.nodePropertyValue.ToString() + expr2.nodePropertyValue.ToString();
}
else if (expr1.nodePropertyValue is double || expr2.nodePropertyValue is double)
{
if (ops.MULTIPLY() != null)
{
ret.nodePropertyValue = (double)expr1.nodePropertyValue * (double)expr2.nodePropertyValue;
}
if (ops.DIVIDE() != null)
{
ret.nodePropertyValue = (double)expr1.nodePropertyValue / (double)expr2.nodePropertyValue;
}
if (ops.ADDITION() != null)
{
ret.nodePropertyValue = (double)expr1.nodePropertyValue + (double)expr2.nodePropertyValue;
}
if (ops.SUBTRACT() != null)
{
ret.nodePropertyValue = (double)expr1.nodePropertyValue - (double)expr2.nodePropertyValue;
}
}
else
{
if (ops.MULTIPLY() != null)
{
ret.nodePropertyValue = (int)expr1.nodePropertyValue * (int)expr2.nodePropertyValue;
}
if (ops.DIVIDE() != null)
{
ret.nodePropertyValue = (double)((int)expr1.nodePropertyValue / (int)expr2.nodePropertyValue);
}
if (ops.ADDITION() != null)
{
ret.nodePropertyValue = (int)expr1.nodePropertyValue + (int)expr2.nodePropertyValue;
}
if (ops.SUBTRACT() != null)
{
ret.nodePropertyValue = (int)expr1.nodePropertyValue - (int)expr2.nodePropertyValue;
}
}
return(ret);
}
