private AST.Definition Definition()
{
var definition = new AST.Definition();
// function can be either "static private xyz" or "private static xyz"
// and Enforce actually allows a function to be "static private static xyz"
if (Accept("static"))
{
definition.@static = true;
}
if (Accept("private"))
{
definition.access_modifier = AccessModifier.@private;
}
else if (Accept("protected"))
{
definition.access_modifier = AccessModifier.@protected;
}
else // default is private
{
definition.access_modifier = AccessModifier.@private;
}
if (Accept("static"))
{
definition.@static = true;
}
var type = GetNextSymbol();
definition.name = GetNextSymbol();
// now we know it's a function definition
if (Accept("("))
{
GoToPreviousSymbol();
AST.FunctionDefinition function = new AST.FunctionDefinition(definition);
function.return_type = type;
symbol_table.AddDefinition(function);
function.args = ArgList();
function.body = Block();
return(function);
}
else
{
AST.VariableDefinition variable = new AST.VariableDefinition(definition);
variable.type = type;
symbol_table.AddDefinition(variable);
// No Value assigned to the variable
if (Accept(";"))
{
return(variable);
}
else if (Accept("="))
{
var assignment = new AST.Assignment();
assignment.left = variable;
assignment.right = Expression();
variable.init = assignment;
return(variable);
}
else
{
throw new AST.UnexpectedSymbolException(GetLastSymbol());
}
}
throw new Exception("We should never be here!");
}
public void AddDefinition(AST.FunctionDefinition def)
{
table.Push(new Symbol {
type = Type.function_definition, def = def
});
}
virtual public void visit(FunctionDefinition node)
{
node.body.accept(this);
}