private static void ReadStruct()
{
QuerySelectPDA query = new QuerySelectPDA();
query.Select(
"select TABLE_NAME, COLUMN_NAME, COLUMN_FLAGS, IS_NULLABLE, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE from INFORMATION_SCHEMA.COLUMNS order by TABLE_NAME");
List <DataRows> rows = query.GetRows();
PDATable.Clear();
foreach (DataRows row in rows)
{
PDATable.Add(row);
}
// get constrains
query = new QuerySelectPDA();
query.Select(
"select CONSTRAINT_NAME, CONSTRAINT_TYPE, TABLE_NAME from INFORMATION_SCHEMA.TABLE_CONSTRAINTS order by TABLE_NAME");
rows = query.GetRows();
PDAConstr.Clear();
foreach (DataRows row in rows)
{
PDAConstr.Add(row);
}
// отображения
PDAView.Clear();
PDAView.Add("INFORMATION_SCHEMA.COLUMNS");
PDAView.Add("INFORMATION_SCHEMA.INDEXES");
PDAView.Add("INFORMATION_SCHEMA.KEY_COLUMN_USAGE");
PDAView.Add("INFORMATION_SCHEMA.PROVIDER_TYPES");
PDAView.Add("INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS");
PDAView.Add("INFORMATION_SCHEMA.TABLE_CONSTRAINTS");
PDAView.Add("INFORMATION_SCHEMA.TABLES");
}
public override void Analyze(List <Lexeme> lexemes)
{
var currentAlpha = 1;
foreach (var lexeme in lexemes)
{
try
{
var currentRules = PDATable.Where(x => x.Alpha == currentAlpha);
var currentRule = currentRules.FirstOrDefault(x => (int)x.LexemeCode == lexeme.Code);
while (currentRule == null)
{
currentAlpha = ParseFault(currentRules);
currentRules = PDATable.Where(x => x.Alpha == currentAlpha);
currentRule = currentRules.FirstOrDefault(x => (int)x.LexemeCode == lexeme.Code);
}
currentAlpha = ProcessRule(currentRule);
usedRules.Add(new UsedRule {
Rule = currentRule, StackState = GetStackState()
});
}
catch (Exception e)
{
Errors.Add($"{e.Message} on line {lexeme.Line}");
onReady(usedRules);
return;
}
}
if (currentAlpha != 26)
{
Errors.Add("Program must ends with }");
}
onReady(usedRules);
}
public void Analyze(tab_lex_exit[] lexemes)
{
var currentAlpha = 1;
foreach (var lexeme in lexemes.Skip(1))
{
var currentRules = PDATable.Where(x => x.Alpha == currentAlpha);
var currentRule = currentRules.FirstOrDefault(x => x.LabelCode == lexeme.kod);
while (currentRule == null)
{
currentAlpha = inComparisionTable[currentAlpha].Invoke();
currentRules = PDATable.Where(x => x.Alpha == currentAlpha);
currentRule = currentRules.FirstOrDefault(x => x.LabelCode == lexeme.kod);
}
if (currentRule.Stack != null)
{
jumpStack.Push((int)currentRule.Stack);
}
currentAlpha = currentRule.Beta();
}
}
