public override Expression Scan(ParseEngine engine)
{
var start = engine.Pointer;
var kw = new WhileKeyword(engine.CurrentLine, engine.CurrentColumn, engine.Query);
var index = engine.Advance(Token.Length).Skip().Pointer;
var chars = engine.Characters;
if (index == chars.Length)
{
kw.Length = engine.Pointer - start;
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
return(kw);
}
if (chars[index] == '(')
{
var ln = engine.CurrentLine;
var col = engine.CurrentColumn;
kw.Condition = engine.Advance().ParseStatement(')', e => new YAMPBracketNotClosedError(ln, col));
if (kw.Condition.Container == null || !kw.Condition.Container.HasContent)
{
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
}
SetMarker(engine);
kw.Body = engine.ParseStatement();
UnsetMarker(engine);
if (engine.LastStatement != null && engine.LastStatement.IsKeyword <DoKeyword>())
{
if (kw.Body.IsEmpty)
{
IsDoWhile = true;
engine.LastStatement.GetKeyword <DoKeyword>().While = kw;
}
else
{
engine.AddError(new YAMPDoWhileNotEmptyError(engine), kw);
}
}
}
else
{
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
}
kw.Length = engine.Pointer - start;
return(kw);
}
public override Expression Scan(ParseEngine engine)
{
var start = engine.Pointer;
var kw = new WhileKeyword(engine.CurrentLine, engine.CurrentColumn, engine.Query);
var index = engine.Advance(Token.Length).Skip().Pointer;
var chars = engine.Characters;
if (index == chars.Length)
{
kw.Length = engine.Pointer - start;
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
return kw;
}
if (chars[index] == '(')
{
var ln = engine.CurrentLine;
var col = engine.CurrentColumn;
kw.Condition = engine.Advance().ParseStatement(')', e => new YAMPBracketNotClosedError(ln, col));
if (kw.Condition.Container == null || !kw.Condition.Container.HasContent)
{
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
}
SetMarker(engine);
kw.Body = engine.ParseStatement();
UnsetMarker(engine);
if (engine.LastStatement != null && engine.LastStatement.IsKeyword<DoKeyword>())
{
if (kw.Body.IsEmpty)
{
IsDoWhile = true;
engine.LastStatement.GetKeyword<DoKeyword>().While = kw;
}
else
{
engine.AddError(new YAMPDoWhileNotEmptyError(engine), kw);
}
}
}
else
{
engine.AddError(new YAMPWhileArgumentsMissing(engine), kw);
}
kw.Length = engine.Pointer - start;
return kw;
}