private void untypedIdentifier(IdentifierNode identifierNode)
{
if (current is Character && current.Text == ":")
{
SyntaxNode entityNode =
new EntityNode(identifierNode.Text);
identifierNode.ReplaceWith(entityNode);
read();
}
else if ((current is Character && current.Text == "?") || current is Arrow || current is NewLine)
{
PropertyNode propertyNode = new PropertyNode(identifierNode.Text);
identifierNode.ReplaceWith(propertyNode);
modRequired(propertyNode);
modForeignKey(propertyNode);
}
else
throw new SyntaxException();
}
private void typedIdentifier(SyntaxNode parentNode)
{
if (current is Identifier)
{
var propertyNode = new PropertyNode(current.Text).AddTo(parentNode) as PropertyNode;
read(); // identifier
modRequired(propertyNode);
modForeignKey(propertyNode);
}
else if (current is Character && current.Text == "[")
{
read(); // [
if (!(current is Identifier))
throw new SyntaxException();
PropertyNode propertyName =
new PropertyNode(current.Text, true).AddTo(parentNode) as PropertyNode;
read(); // identifier
if (!(current is Character) || current.Text != "]")
throw new SyntaxException();
read(); // ]
modRequired(propertyName);
modForeignKey(propertyName);
}
else
throw new SyntaxException();
}
private void modRequired(PropertyNode parentNode)
{
if (current is Character && current.Text == "?")
{
parentNode.IsRequired = false;
read(); // ?
}
}
private void statement(SyntaxNode parentNode)
{
if (current is Character && current.Text == "@")
{
read(); // @
command(parentNode);
}
else if (current is Identifier)
{
IdentifierNode identifierNode =
new IdentifierNode(current.Text).AddTo(parentNode) as IdentifierNode; // can be an entity or a property
read(); // identifier
untypedIdentifier(identifierNode);
}
else if (current is Character && "$#&!".Contains(current.Text))
{
new PropTypeNode(current.Text.ToPropertyType()).AddTo(parentNode);
propType();
typedIdentifier(parentNode);
}
else if (current is Character && current.Text == "[")
{
read(); // [
if (!(current is Identifier))
throw new SyntaxException();
PropertyNode propertyName =
new PropertyNode(current.Text, true).AddTo(parentNode) as PropertyNode;
read(); // identifier
if (!(current is Character) || current.Text != "]")
throw new SyntaxException();
read(); // ]
modRequired(propertyName);
modForeignKey(propertyName);
}
else
throw new SyntaxException();
}
private void modForeignKey(PropertyNode parentNode)
{
if (current is Arrow)
{
parentNode.IsNavigationProperty = true;
read(); // arrow
}
}