protected Parser(string text)
{
Evaluate = new LiteralParse(text);
Step = new ComputeStep(Evaluate);
ParseType = StepType.Parse;
if (Evaluate.IsEmpty)
{
Step.Error = StepError.EmptyString;
Step.ParseAborted = true;
}
else if (Evaluate.HasUnbalancedQuotes())
{
Step.Error = StepError.UnbalancedQuotes;
Step.ParseAborted = true;
}
else if (Evaluate.HasUnbancedParens())
{
Step.Error = StepError.UnbalancedParens;
Step.ParseAborted = true;
}
else
{
TryParse();
}
}
private StepState _flags2; // used by TryResolve()
#region Constructor ==================================================
internal ComputeStep(LiteralParse evaluate)
{
StepType = StepType.Parse;
Evaluate = evaluate;
}
protected Parser(string text, StepType stepType, bool hasNewLine = false, bool hasParens = false)
{
Step = new ComputeStep(stepType);
Evaluate = new LiteralParse(text);
ParseType = stepType;
Step.HasParens = hasParens;
Step.HasNewLine = hasNewLine;
switch (stepType)
{
case StepType.Parse:
case StepType.List:
case StepType.Vector:
Step.Evaluate = Evaluate;
TryParse();
break;
case StepType.Index:
break;
case StepType.String:
Step.Evaluate = new LiteralString(Step, text);
break;
case StepType.Double:
TryAddLiteralNumber();
break;
case StepType.Integer:
TryAddLiteralNumber();
break;
case StepType.BitField:
TryAddLiteralNumber();
break;
case StepType.Property:
Step.Evaluate = Evaluate; // the property name is needed by Step.TryValidate()
break;
default:
break;
}
#region TryAddLiteralNumber ==========================================
bool TryAddLiteralNumber()
{
var(ok, isDouble, v, d) = Value.ParseNumber(Evaluate.Text);
if (ok)
{
if (isDouble)
{
Step.Evaluate = new LiteralDouble(Step, d, Evaluate.Text);
}
else
{
Step.Evaluate = new LiteralInt64(Step, v, Evaluate.Text);
}
return(true);
}
else
{
Step.Error = StepError.InvalidNumber;
Step.Evaluate = Evaluate;
}
return(false);
}
#endregion
}
