private static BoundScope CreateParentScopes(BoundGlobalScope _previous)
{
var _stack = new Stack <BoundGlobalScope>();
while (_previous != null)
{
_stack.Push(_previous);
_previous = _previous.Previous;
}
BoundScope _parent = null;
while (_stack.Count > 0)
{
_previous = _stack.Pop();
var _scope = new BoundScope(_parent);
foreach (var _v in _previous.Variables)
{
_scope.TryDeclare(_v);
}
_parent = _scope;
}
return(_parent);
}
private BoundVariableDeclaration BindVariableDeclaration(VariableDeclarationSyntax _syntax)
{
var _name = _syntax.Identifier.Text;
var _isReadOnly = _syntax.KeywordToken.Kind == SyntaxKind.LetKeyword;
var _expression = BindExpression(_syntax.Initializer);
var _variable = new VariableSymbol(_name, _isReadOnly, _expression.Type);
if (!scope.TryDeclare(_variable))
{
Diagnostics.ReportVariableAlreadyDeclared(_syntax.Identifier.Span, _name);
}
return(new BoundVariableDeclaration(_variable, _expression));
}
