/// <summary>
/// A recursive function to find out if the AST contains multiple FormNode
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public bool Analyse(QLNode node)
{
//Reset the formNodeCount
formNodeCount = 0;
if (node.Type == NodeType.Form)
{
this.Visit(node as FormNode);
}
else
{
this.Visit(node);
}
this.Visit(node);
if (formNodeCount == 0)
{
Analyser.AddMessage("There has no form been defined", Language.QL, MessageType.ERROR);
}
else if (formNodeCount > 1)
{
Analyser.AddMessage("There can only be one form", Language.QL, MessageType.ERROR);
}
return(formNodeCount == 1);
}
public bool Analyse(QLNode node)
{
var result = true;
var expression = GetExpression(node);
if (expression != null && AnalyseExpression(expression) == StatementType.Unknown)
{
Analyser.AddMessage(string.Format("{0} - This expression isn't valid.", node.Location), Language.QL, MessageType.ERROR);
return(false);
}
switch (node)
{
case QLCollectionNode collectionNode:
foreach (QLNode child in collectionNode.Children)
{
if (!Analyse(child))
{
result = false;
}
}
break;
default:
return(true);
}
return(result);
}
public bool AddVariable(string id, QValueType type)
{
if (!SymbolTable.Add(id, type))
{
Analyser.AddMessage(string.Format("Duplicate identifier {0} {1}", id, type), MessageType.ERROR);
return(false);
}
return(true);
}
public void Visit(QuestionNode node)
{
if (node.Children.Count != 0)
{
isValid = false;
Analyser.AddMessage(errorMessage, LanguageType.QL, MessageType.ERROR);
}
VisitChildren(node);
}
private bool AddVariable(string id, QValueType type)
{
VisitedIDs.Add(id);
if (!SymbolTable.Add(id, type))
{
Analyser.AddMessage(string.Format("Duplicate identifier {0} {1}", id, type), Language.QL, MessageType.ERROR);
return(false);
}
return(true);
}
private bool IsIdentiierInSymbolTable(IdentifierNode node)
{
var valueType = SymbolTable.Get(node.ID);
if (valueType != QValueType.Unknown)
{
return(true);
}
else
{
Analyser.AddMessage(string.Format("{0} Unknown identifier '{1}' in statement", node.Location, node.ID), Language.QL, MessageType.ERROR);
return(false);
}
}
public bool Analyse(QLSNode node)
{
this._visitedNodes.Clear();
this.Visit(node);
var isValid = true;
foreach (var visitedNode in _visitedNodes)
{
if (!SymbolTable.Instance.TypeMap.Keys.Contains(visitedNode.ID))
{
Analyser.AddMessage(string.Format("{0} Unknown identifier in QLS: {1}", visitedNode.Location, visitedNode.ID), Language.QLS, MessageType.ERROR);
isValid = false;
}
}
return(isValid);
}
public bool Analyse(QLSNode node)
{
var isValid = true;
this._visitedNodes.Clear();
this.Visit(node);
foreach (var key in SymbolTable.Instance.TypeMap.Keys)
{
if (!this._visitedNodes.Select(x => x.ID).Contains(key))
{
Analyser.AddMessage(string.Format("Identifier has not been included in QLS: {0}", key), Language.QLS, MessageType.WARNING);
isValid = false;
}
}
return(isValid);
}
public bool Analyse(Node node)
{
var childValue = true;
foreach (Node child in node.Children)
{
if (child.Type == NodeType.QUESTION && child.Children.Count != 0)
{
Analyser.AddMessage(errorMessage, MessageType.ERROR);
return(false);
}
else
{
childValue = Analyse(child);
}
}
return(childValue);
}
public bool Analyse(QLSNode node)
{
this._visitedNodes.Clear();
this.Visit(node);
var isValid = true;
foreach (var visitedNode in this._visitedNodes)
{
var idCount = this._visitedNodes.Count(x => x.ID == visitedNode.ID);
if (idCount > 1)
{
isValid = false;
Analyser.AddMessage(string.Format("{0} Duplicate key in QLS: {1}", visitedNode.Location, visitedNode.ID), Language.QLS, MessageType.WARNING);
}
}
return(isValid);
}
public bool Analyse(Node node)
{
var result = true;
var expression = GetExpression(node);
if (expression != null && AnalyseExpression(expression) == StatementType.UNKNOWN)
{
Analyser.AddMessage(string.Format("{0} - This expression isn't valid.", node.Location), MessageType.ERROR);
return(false);
}
foreach (Node child in node.Children)
{
if (!Analyse(child))
{
result = false;
}
}
return(result);
}