public SymbolTable Build(AstProgram node)
{
table = new SymbolTable();
AddBuiltInSymbols();
node.Accept(this);
return table;
}
public bool Evaluate(AstProgram node)
{
var tableBuilder = new SymbolTableBuilder();
result = true;
isClassFieldDef = false;
try
{
table = tableBuilder.Build(node);
}
catch (CallableSymbolAlreadyDefinedException e)
{
DispatchError(new SourcePosition(), "Function already defined: " + e.Message);
return false;
}
catch (SymbolAlreadyDefinedException e)
{
DispatchError(new SourcePosition(), "Variable already defined: " + e.Message);
return false;
}
catch (ArraySizeIncorrectException e)
{
DispatchError(new SourcePosition(), "Bad array size: " + e.Message);
return false;
}
table.UseGlobalScope();
resolver = new TypeResolver(table);
currFunctionReturnType = null;
currStateInsideExpr = false;
try
{
node.Accept(this);
}
catch (SymbolNotFoundException e)
{
DispatchError(e.Expr.TextPosition, e.Message);
}
WarnUnusedSymbols();
return result;
}
public TypeResolver(SymbolTable table)
{
this.table = table;
}
public void SetSymbolTable(SymbolTable table)
{
this.table = table;
}