private void EnterIdentifiers(IEnumerable <IdentifierNode> identifiers, SymbolTableEntryType type, ref int localVariableIndex)
{
int index;
if (type == SymbolTableEntryType.Parameter)
{
index = 0;
}
else if (type == SymbolTableEntryType.Variable)
{
index = localVariableIndex;
}
else
{
throw new ArgumentException("type must be Parameter or Variable", "type");
}
foreach (var identifier in identifiers)
{
string scopeString = _scopeStack.CreateScopeString(identifier.Name);
var entry = new SymbolTableEntry(identifier.Name, type, index);
AddSymbol(scopeString, entry);
++index;
}
if (type == SymbolTableEntryType.Variable)
{
localVariableIndex = index;
}
}
public static void Initialize(ref Grammar grammar)
{
grammar.Add(new Production(ParserConstants.Declaration,
new SubProduction
(
new List <ExpressionDefinition>
{
new TerminalExpressionDefinition {
TokenType = TokenType.TypeDeclaration
},
new TerminalExpressionDefinition {
TokenType = TokenType.Identifier
},
new SemanticActionDefinition((ParsingNode node) =>
{
string type = node.GetAttributeForKey <WordToken>(ParserConstants.TypeDeclaration, ParserConstants.Token).Lexeme;
SymbolTable symbolTable = node.FirstParentWithAttribute(ParserConstants.SymTable).GetAttribute <SymbolTable>(ParserConstants.SymTable);
string key = node.GetAttributeForKey <WordToken>("Identifier", ParserConstants.Token).Lexeme;
SymbolTableEntryType symbolEntryType = SymbolTable.StringToSymbolTableEntryType(type);
SymbolTableEntry entry = symbolTable.Create(key, symbolEntryType);
DeclarationASTNode syntaxTreeNode = new DeclarationASTNode();
syntaxTreeNode.SymbolTableEntry = entry;
node.Attributes.Add(ParserConstants.SyntaxTreeNode, syntaxTreeNode);
})
}
)
));;
}
public SymbolTableEntry Create(string name, SymbolTableEntryType type)
{
SymbolTableEntry entry = new SymbolTableEntry
{
Name = name,
Type = type
};
Entries.Add(entry);
return(entry);
}
private void EnterIdentifiers(IEnumerable<IdentifierNode> identifiers, SymbolTableEntryType type, ref int localVariableIndex)
{
int index;
if (type == SymbolTableEntryType.Parameter)
index = 0;
else if (type == SymbolTableEntryType.Variable)
index = localVariableIndex;
else
throw new ArgumentException("type must be Parameter or Variable", "type");
foreach (var identifier in identifiers)
{
string scopeString = _scopeStack.CreateScopeString(identifier.Name);
var entry = new SymbolTableEntry(identifier.Name, type, index);
AddSymbol(scopeString, entry);
++index;
}
if (type == SymbolTableEntryType.Variable)
localVariableIndex = index;
}
public SymbolTableEntry(string label, SymbolTableEntryType type, int index)
{
Label = label;
Type = type;
Index = index;
}
public SymbolTableEntry(string label, SymbolTableEntryType type, int index)
{
Label = label;
Type = type;
Index = index;
}
