/// <summary>
/// text := <TEXT>
/// </summary>
protected internal virtual AstNode Text()
{
AstNode v = null;
if (token.Symbol == Scanner.Symbol.TEXT)
{
v = new AstText(token.Image);
ConsumeToken();
}
return(v);
}
/// <summary>
/// tree := text? ((dynamic text?)+ | (deferred text?)+)?
/// </summary>
public virtual Tree Tree()
{
ConsumeToken();
AstNode t = Text();
if (token.Symbol == Scanner.Symbol.EOF)
{
if (t == null)
{
t = new AstText("");
}
return(new Tree(t, functions, identifiers, false));
}
AstEval e = Eval();
if (token.Symbol == Scanner.Symbol.EOF && t == null)
{
return(new Tree(e, functions, identifiers, e.Deferred));
}
List <AstNode> list = new List <AstNode>();
if (t != null)
{
list.Add(t);
}
list.Add(e);
t = Text();
if (t != null)
{
list.Add(t);
}
while (token.Symbol != Scanner.Symbol.EOF)
{
if (e.Deferred)
{
list.Add(Eval(true, true));
}
else
{
list.Add(Eval(true, false));
}
t = Text();
if (t != null)
{
list.Add(t);
}
}
return(new Tree(CreateAstComposite(list), functions, identifiers, e.Deferred));
}