/// <summary>
/// Visit variable expression ast
/// </summary>
/// <param name="variableExpressionAst"></param>
/// <returns></returns>
public override object VisitVariableExpression(VariableExpressionAst variableExpressionAst)
{
if (variableExpressionAst == null)
{
return(null);
}
var varPath = variableExpressionAst.VariablePath;
if (_variables.ContainsKey(AssignmentTarget.GetUnaliasedVariableName(varPath)))
{
var details = _variables[AssignmentTarget.GetUnaliasedVariableName(varPath)];
Current.AddAst(new VariableTarget(variableExpressionAst));
details.AssociatedAsts.Add(variableExpressionAst);
}
return(base.VisitVariableExpression(variableExpressionAst));
}
/// <summary>
/// Visit assignment statement
/// </summary>
/// <param name="assignmentStatementAst"></param>
/// <returns></returns>
public override object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (assignmentStatementAst == null)
{
return(null);
}
base.VisitAssignmentStatement(assignmentStatementAst);
foreach (var assignTarget in GetAssignmentTargets(assignmentStatementAst.Left))
{
var leftAst = assignTarget;
while (leftAst is AttributedExpressionAst)
{
leftAst = ((AttributedExpressionAst)leftAst).Child;
}
if (leftAst is VariableExpressionAst)
{
var varPath = ((VariableExpressionAst)leftAst).VariablePath;
if (_variables.ContainsKey(AssignmentTarget.GetUnaliasedVariableName(varPath)))
{
var details = _variables[AssignmentTarget.GetUnaliasedVariableName(varPath)];
details.AssignedBlocks.Add(Current);
}
Current.AddAst(new AssignmentTarget(assignmentStatementAst));
}
else
{
// We skip things like $a.test = 3. In this case we will just test
// for variable $a
assignTarget.Visit(this.Decorator);
}
}
return(null);
}