private TypeSymbol BindTypeClause(TypeClauseNode node)
{
if (node == null)
{
return(null);
}
if (Scope.TryLookupType(node.TypeName.Text, out var type))
{
return(type);
}
diagnostics.ReportUndefinedType(node.TypeName, node.TypeName.Text);
return(null);
}
internal ParameterDeclarationNode(Token identifier, TypeClauseNode type)
{
ParameterName = identifier ?? throw new ArgumentNullException(nameof(identifier));
Type = type ?? throw new ArgumentNullException(nameof(type));
}
// NB: either type or initializer may be null, but not bith at the same time.
internal VariableDeclarationNode(Token identifier, TypeClauseNode type, ExpressionNode initializer)
{
VariableName = identifier ?? throw new ArgumentNullException(nameof(identifier));
Type = type; // may be null.
Initializer = initializer; // may be null.
}
