public Conditional(Token conditionalType, Ast predicate, ScopeDeclr body, Conditional alternate = null)
: this(conditionalType)
{
Predicate = predicate;
Body = body;
Alternate = alternate;
}
public Conditional(Token conditionalType, Ast predicate, ScopeDeclr body, Conditional alternate = null)
: this(conditionalType)
{
Predicate = predicate;
Body = body;
Alternate = alternate;
}
public void Visit(Conditional ast)
{
if (ast.Predicate != null)
{
ast.Predicate.Visit(this);
}
ast.Body.Visit(this);
if (ast.Alternate != null)
{
ast.Alternate.Visit(this);
}
SetScope(ast);
}
public void Visit(Conditional ast)
{
Console.Write(ast.Token);
if (ast.Predicate != null)
{
PrintWrap("Predicate", () => ast.Predicate.Visit(this));
}
ast.Body.Visit(this);
if (ast.Alternate != null)
{
if (ast.Alternate.Token.TokenType == TokenType.If)
{
Console.Write("Else");
}
ast.Alternate.Visit(this);
}
}
public void Visit(Conditional ast)
{
Exec(ast);
}
private void ConditionalDo(Conditional conditional)
{
// else has no predicate
if (conditional.Predicate == null)
{
Exec(conditional.Body);
return;
}
MemorySpaces.CreateScope();
var success = Convert.ToBoolean(Exec(conditional.Predicate));
if(success)
{
Exec(conditional.Body);
MemorySpaces.PopScope();
}
else
{
MemorySpaces.PopScope();
Exec(conditional.Alternate);
}
}