//in method
public override void InAMethod(AMethod node)
{
// save current symbol table
_previousSymbolTables.AddFirst(_currentSymbolTable);
// build new param list
_currentParamList = new List <VariableDefinition>();
// build def allowed by types according to grammar
BasicTypeDefinition intType;
intType = new BasicTypeDefinition();
intType.name = "int";
BasicTypeDefinition fltType;
fltType = new BasicTypeDefinition();
fltType.name = "float";
BasicTypeDefinition boolType;
boolType = new BasicTypeDefinition();
boolType.name = "boolean";
StringTypeDefinition stringType = new StringTypeDefinition();
stringType.name = "string";
// create and seed symbol table
_currentSymbolTable = new Dictionary <string, Definition>();
_currentSymbolTable.Add("int", intType);
_currentSymbolTable.Add("float", fltType);
_currentSymbolTable.Add("boolean", boolType);
_currentSymbolTable.Add("string", stringType);
}
//out mehtod
public override void OutAMethod(AMethod node)
{
// restore previous symbol table
_currentSymbolTable = _previousSymbolTables.First();
_previousSymbolTables.RemoveFirst();
Definition def;
String methodName = node.GetId().Text;
// ensure submethod isnt used
if (_currentSymbolTable.TryGetValue(methodName, out def) || _globalSymbolTable.TryGetValue(methodName, out def))
{
Console.WriteLine("[" + node.GetOpenparen().Line + "] : " + methodName + " is already declared.");
// build function def and add to symbol table
}
else
{
def = new MethodDefinition();
def.name = node.GetId().Text;
((MethodDefinition)def).paramList = _currentParamList;
_currentSymbolTable.Add(methodName, def);
}
}
protected virtual Node_Method parseMethod(AMethod node)
{
return new Node_Method(
parseOne<TIdentifier,Node_Identifier>(parseIdentifier, (TIdentifier)node.GetName()),
parseOne<PExpression,INode_Expression>(parseExpression, (PExpression)node.GetInterface()),
getSource(node));
}
