private BoundExpression BindAssignmentExpression(AssignmentExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
var boundExpression = BindExpression(syntax.Expression);
if (!_scope.TryLookupVariable(name, out var variable))
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new BoundErrorExpression());
}
if (variable.IsReadOnly)
{
_diagnostics.ReportCannotAssign(syntax.IdentifierToken.Span, name);
return(new BoundErrorExpression());
}
if (variable.Type != boundExpression.Type)
{
_diagnostics.ReportTypeMismatch(syntax.Expression.Span, boundExpression.Type, variable.Type);
return(new BoundErrorExpression());
}
return(new BoundAssignmentExpression(variable, boundExpression));
}
private BoundExpression BindAssignmentExpression(AssignmentExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
var boundExpression = BindExpression(syntax.Expression);
if (!_scope.TryLookupVariable(name, out var variable))
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(boundExpression);
}
if (variable.IsReadOnly)
{
_diagnostics.ReportCannotAssign(syntax.EqualsToken.Span, name);
}
var convertedExpression = BindConversion(syntax.Expression.Span, boundExpression, variable.Type);
return(new BoundAssignmentExpression(variable, convertedExpression));
}
