bool CheckForDuplicateDeclarations(SymbolTable symbolTable)
{
return this._rootNode.RunDelegateForType(typeof(SyntaxTreeDeclarationNode), delegate(SyntaxTreeNode node)
{
SyntaxTreeDeclarationNode declNode = node as SyntaxTreeDeclarationNode;
Symbol symbol = declNode.Identifier;
if (!symbolTable.IsIdentifierSymbol(symbol))
{
string message = declNode.ContextErrorString("Declaration node contains not an identifier symbol.");
Logger.Error(message);
return false;
}
SyntaxTreeNode nodeFromSymbol = symbolTable.GetDeclarationNodeLinkToSymbol(symbol);
if (nodeFromSymbol != declNode)
{
string message = declNode.ContextErrorString("Duplicate declaration of an identifier {0}.", symbolTable.GetRepresentationOfSymbol(symbol));
Logger.Error(message);
return false;
}
return true;
});
}
bool CheckForUndeclaredIdentifiers(SymbolTable symbolTable)
{
return this._rootNode.RunDelegateForType(typeof(SyntaxTreeIdentNode), delegate(SyntaxTreeNode node)
{
SyntaxTreeIdentNode identNode = node as SyntaxTreeIdentNode;
Symbol symbol = identNode.Identifier;
if (symbolTable.GetDeclarationNodeLinkToSymbol(symbol) == null)
{
string message = identNode.ContextErrorString("Identifier {0} was not declared.", symbolTable.GetRepresentationOfSymbol(symbol));
Logger.Error(message);
return false;
}
identNode.DeclarationNode = symbolTable.GetDeclarationNodeLinkToSymbol(symbol);
return true;
});
}
