/// <summary>
/// Checks the expression and appends errors to the root tree node when inconsistencies are found
/// </summary>
public override void CheckExpression()
{
base.CheckExpression();
InitialValue.CheckExpression();
Type initialValueType = InitialValue.GetExpressionType();
if (initialValueType != null)
{
Expression.CheckExpression();
Type expressionType = Expression.GetExpressionType();
if (expressionType != null)
{
if (expressionType != initialValueType)
{
AddError("Expression " + Expression + " has not the same type (" + expressionType.FullName +
" than initial value " + InitialValue + " type " + initialValueType.FullName, RuleChecksEnum.SemanticAnalysisError);
}
}
else
{
AddError("Cannot determine type of expression " + Expression, RuleChecksEnum.SemanticAnalysisError);
}
Type conditionType = Condition.GetExpressionType();
if (conditionType != null)
{
if (!(conditionType is BoolType))
{
AddError("Condition " + Condition + " does not evaluate to a boolean", RuleChecksEnum.SemanticAnalysisError);
}
}
else
{
AddError("Cannot determine type of condition " + Condition, RuleChecksEnum.SyntaxError);
}
}
else
{
AddError("Cannot determine type of the initial value " + InitialValue, RuleChecksEnum.SemanticAnalysisError);
}
}