private void formatQueryBody(QueryBodyNode body, StringBuilder sb) {
foreach (var c in body.Clauses) {
switch (c.QueryBodyClauseKind) {
case From:
var from = (FromQueryBodyClauseNode)c;
sb.append("from ");
if (from.Type != null) {
sb.append(typeReferenceToString(from.Type));
sb.append(" ");
}
sb.append(new String(text, from.NameOffset, from.NameLength));
sb.append(" in ");
sb.append(expressionToString(from.Origin));
sb.append("\r\n");
break;
case Join:
var join = (JoinQueryBodyClauseNode)c;
sb.append("join ");
if (join.Type != null) {
sb.append(typeReferenceToString(join.Type));
sb.append(" ");
}
sb.append(new String(text, join.NameOffset, join.NameLength));
sb.append(" in ");
sb.append(expressionToString(join.Origin));
sb.append(" on ");
sb.append(expressionToString(join.EqualsLeftOperand));
sb.append(" equals ");
sb.append(expressionToString(join.EqualsRightOperand));
if (join.ResultLength > 0) {
sb.append(" into ");
sb.append(new String(text, join.ResultOffset, join.ResultLength));
}
sb.append("\r\n");
break;
case Let:
var let = (LetQueryBodyClauseNode)c;
sb.append("let ");
sb.append(new String(text, let.NameOffset, let.NameLength));
sb.append(" = ");
sb.append(expressionToString(let.Value));
sb.append("\r\n");
break;
case Orderby:
var orderby = (OrderbyQueryBodyClauseNode)c;
sb.append("orderby ");
bool first = true;
foreach (var o in orderby.Orderings) {
if (first) {
first = false;
} else {
sb.append(", ");
}
sb.append(expressionToString(o.KeySelector));
if (o.Descending) {
sb.append(" descending");
}
}
sb.append("\r\n");
break;
case Where:
var where = (WhereQueryBodyClauseNode)c;
sb.append("where ");
sb.append(expressionToString(where.Predicat));
sb.append("\r\n");
break;
default:
throw new RuntimeException("Unhandled query clause: " + c.QueryBodyClauseKind);
}
}
if (body.By != null) {
sb.append("group ");
} else {
sb.append("select ");
}
sb.append(expressionToString(body.SelectOrGroup));
if (body.By != null) {
sb.append(" by ");
sb.append(expressionToString(body.By));
}
if (body.Continuation != null) {
sb.append("\r\ninto ");
sb.append(new String(text, body.Continuation.NameOffset, body.Continuation.NameLength));
sb.append("\r\n");
formatQueryBody(body.Continuation.Body, sb);
}
}
private void parseQueryBody(QueryBodyNode body, int endPosition) {
var done = false;
do {
switch (lexicalUnit) {
case ContextualKeyword:
case Keyword:
switch (scanner.Keyword) {
case From:
var from = new FromQueryBodyClauseNode();
parseFromClause(from);
body.Clauses.add(from);
endPosition = from.EndPosition;
break;
case Join:
var join = new JoinQueryBodyClauseNode();
parseJoinClause(join);
body.Clauses.add(join);
endPosition = join.EndPosition;
break;
case Let:
var let = new LetQueryBodyClauseNode();
parseLetClause(let);
body.Clauses.add(let);
endPosition = let.EndPosition;
break;
case Orderby:
var orderby = new OrderbyQueryBodyClauseNode();
parseOrderbyClause(orderby);
body.Clauses.add(orderby);
endPosition = orderby.EndPosition;
break;
case Where:
var where = new WhereQueryBodyClauseNode();
parseWhereClause(where);
body.Clauses.add(where);
endPosition = where.EndPosition;
break;
default:
done = true;
break;
}
break;
default:
done = true;
break;
}
} while (!done);
switch (lexicalUnit) {
case ContextualKeyword:
case Keyword:
switch (scanner.Keyword) {
case Select:
nextLexicalUnit(true);
body.SelectOrGroup = parseExpression();
endPosition = body.SelectOrGroup.EndPosition;
break;
case Group:
nextLexicalUnit(true);
body.SelectOrGroup = parseExpression();
if (lexicalUnit != LexicalUnit.ContextualKeyword || scanner.Keyword != Keyword.By) {
throw error(ParseErrorId.ByExpected);
}
nextLexicalUnit(true);
body.By = parseExpression();
endPosition = body.By.EndPosition;
break;
default:
throw error(ParseErrorId.SelectOrGroupExpected);
}
break;
default:
throw error(ParseErrorId.SelectOrGroupExpected);
}
if (lexicalUnit == LexicalUnit.ContextualKeyword && scanner.Keyword == Keyword.Into) {
if (!isIdentifier(nextLexicalUnit(true))) {
throw error(ParseErrorId.IdentifierExpected);
}
body.Continuation = new QueryContinuationNode { NameOffset = scanner.StartPosition, NameLength = getLexicalUnitLength() };
endPosition = scanner.EndPosition;
nextLexicalUnit(true);
parseQueryBody(body.Continuation.Body, endPosition);
endPosition = body.Continuation.Body.EndPosition;
}
body.EndPosition = endPosition;
}
private void formatQueryBody(QueryBodyNode body, StringBuilder sb)
{
foreach (var c in body.Clauses)
{
switch (c.QueryBodyClauseKind)
{
case From:
var from = (FromQueryBodyClauseNode)c;
sb.append("from ");
if (from.Type != null)
{
sb.append(typeReferenceToString(from.Type));
sb.append(" ");
}
sb.append(new String(text, from.NameOffset, from.NameLength));
sb.append(" in ");
sb.append(expressionToString(from.Origin));
sb.append("\r\n");
break;
case Join:
var join = (JoinQueryBodyClauseNode)c;
sb.append("join ");
if (join.Type != null)
{
sb.append(typeReferenceToString(join.Type));
sb.append(" ");
}
sb.append(new String(text, join.NameOffset, join.NameLength));
sb.append(" in ");
sb.append(expressionToString(join.Origin));
sb.append(" on ");
sb.append(expressionToString(join.EqualsLeftOperand));
sb.append(" equals ");
sb.append(expressionToString(join.EqualsRightOperand));
if (join.ResultLength > 0)
{
sb.append(" into ");
sb.append(new String(text, join.ResultOffset, join.ResultLength));
}
sb.append("\r\n");
break;
case Let:
var let = (LetQueryBodyClauseNode)c;
sb.append("let ");
sb.append(new String(text, let.NameOffset, let.NameLength));
sb.append(" = ");
sb.append(expressionToString(let.Value));
sb.append("\r\n");
break;
case Orderby:
var orderby = (OrderbyQueryBodyClauseNode)c;
sb.append("orderby ");
bool first = true;
foreach (var o in orderby.Orderings)
{
if (first)
{
first = false;
}
else
{
sb.append(", ");
}
sb.append(expressionToString(o.KeySelector));
if (o.Descending)
{
sb.append(" descending");
}
}
sb.append("\r\n");
break;
case Where:
var where = (WhereQueryBodyClauseNode)c;
sb.append("where ");
sb.append(expressionToString(where.Predicat));
sb.append("\r\n");
break;
default:
throw new RuntimeException("Unhandled query clause: " + c.QueryBodyClauseKind);
}
}
if (body.By != null)
{
sb.append("group ");
}
else
{
sb.append("select ");
}
sb.append(expressionToString(body.SelectOrGroup));
if (body.By != null)
{
sb.append(" by ");
sb.append(expressionToString(body.By));
}
if (body.Continuation != null)
{
sb.append("\r\ninto ");
sb.append(new String(text, body.Continuation.NameOffset, body.Continuation.NameLength));
sb.append("\r\n");
formatQueryBody(body.Continuation.Body, sb);
}
}