public static TemplateExpression Parse(ExpressionWalker ew)
{
ew.IsCurrentOrThrow(ExpressionToken.Template);
ew.NextOrThrow();
// ReSharper disable once UseObjectOrCollectionInitializer
var ret = new TemplateExpression();
ew.IsCurrentOrThrow(ExpressionToken.StringLiteral);
ret._matchPath = new RegexResult[] { ew.Current.Match.AsResult() };
ret.Path = ew.Current.Match.Value.StartsWith("\"") ? ew.Current.Match.Value.Substring(1, ew.Current.Match.Length - 2) : ew.Current.Match.Value;
ret._matchForEvery = ew.Next(ExpressionToken.ForEvery, true).Match.AsResult();
ew.NextOrThrow();
ret.Arguments = ArgumentsExpression.Parse(ew, token => token.Token == ExpressionToken.NewLine || token.Token == ExpressionToken.Mod, false, typeof(ForeachExpression));
//we have to fall back because ArgumentsExpression.Parse swallows mod.
ew.IsBack(ExpressionToken.Mod, true);
if (ew.IsCurrent(ExpressionToken.Mod))
{
ew.Back(1);
}
return(ret);
}
public static Expression Parse(ExpressionWalker ew, Expression left = null)
{
var fc = new CallExpression();
fc.FunctionName = left ?? IdentityExpression.Parse(ew);
fc.Arguments = ArgumentsExpression.Parse(ew, ExpressionToken.LeftParen, ExpressionToken.RightParen, true);
return(InteractableExpression.TryExpand(fc, ew));
}
public static ArgumentsExpression Parse(ExpressionWalker ew, ExpressionToken left, ExpressionToken right, bool argsOptional, Type caller = null)
{
var args = new ArgumentsExpression();
ew.IsCurrentOrThrow(left);
ew.NextOrThrow();
var exprs = new List <Expression>();
while (ew.Current.Token != right && ew.HasNext)
{
if (ew.Current.Token == ExpressionToken.Comma)
{
if (ew.HasBack && ew.PeakBack.Token == ExpressionToken.Comma)
{
exprs.Add(NullIdentity.Instance);
}
ew.NextOrThrow();
continue;
}
var expression = ParseExpression(ew, caller);
if (ew.IsCurrent(ExpressionToken.Colon))
{
//handle keyvalue item
exprs.Add(KeyValueExpression.Parse(ew, expression, caller));
}
else
{
exprs.Add(expression);
}
}
if (exprs.Count == 0 && !argsOptional)
{
throw new UnexpectedTokenException($"Was expecting an expression between {left} and {right}");
}
ew.Next();
args.Arguments = exprs.ToArray();
return(args);
}
public static ArgumentsExpression Parse(ExpressionWalker ew, Func <TokenMatch, bool> parseTill, bool argsOptional, Type caller = null)
{
var args = new ArgumentsExpression();
var exprs = new List <Expression>();
while (!parseTill(ew.Current) && ew.HasNext)
{
if (ew.Current.Token == ExpressionToken.Comma)
{
if (ew.HasBack && ew.PeakBack.Token == ExpressionToken.Comma)
{
exprs.Add(NullIdentity.Instance);
}
ew.NextOrThrow();
continue;
}
var expression = ParseExpression(ew, caller);
if (ew.IsCurrent(ExpressionToken.Colon))
{
//handle keyvalue item
exprs.Add(KeyValueExpression.Parse(ew, expression));
}
else
{
exprs.Add(expression);
}
}
if (exprs.Count == 0 && !argsOptional)
{
throw new UnexpectedTokenException($"Was expecting arguments but found none while argsOptional is false");
}
ew.Next();
args.Arguments = exprs.ToArray();
return(args);
}
public static ParserAction Parse(ExpressionWalker ew, string code, LineBuilder output)
{
// multiline:
// %foreach expr%
// code #1
// %
// singleline:
// %foreach expr
// code #1
ew.IsCurrentOrThrow(ExpressionToken.Foreach);
ew.NextOrThrow();
//parse the arguments for the foreach
var args = ArgumentsExpression.Parse(ew, token => token.Token == ExpressionToken.NewLine || token.Token == ExpressionToken.Mod, false, typeof(ForeachExpression));
//ew.Back(); //agrumentsExpression skips the closer token and we need it to identify if this is a singleline or multiline
if (output == null)
{
output = new LineBuilder(code);
}
string content;
var relatedLines = new List <Line>();
relatedLines.AddRange(output.GetLinesRelated(args.Matches()));
if (ew.PeakBack.Token == ExpressionToken.Mod)
{
//the content is % to % block
var leftBorder = ew.Current.Match;
var nextMod = ForeachExpression.FindCloser(leftBorder.Index, code);
//handle implicit end block (when % is not existing)
if (nextMod == -1)
{
nextMod = code.Length - 1;
}
ew.SkipForwardWhile(token => token.Match.Index < nextMod);
ew.Next(); //skip % itself
var l1 = output.GetLineAt(leftBorder.Index) ?? output.Lines.First();
relatedLines.AddRange(new Range(l1.LineNumber, output.GetLineAt(nextMod).LineNumber).EnumerateIndexes().Select(output.GetLineByLineNumber));
content = null;
}
else
{
//the content is only next line
var leftMod = ew.Current.Match;
var nextMod = code.IndexOf('\n', leftMod.Index);
relatedLines.Add(output.GetLineByLineNumber(relatedLines.Last().LineNumber + 1)); //next line.
content = code.Substring(leftMod.Index, nextMod == -1 ? (code.Length - leftMod.Index) : nextMod - leftMod.Index);
}
relatedLines = relatedLines.Distinct().OrderBy(l => l.StartIndex).ToList();
if (relatedLines.Count(l => l.Content.Contains("%foreach")) <= relatedLines.Count(l => l.CleanContent() == "%") && relatedLines.Last().CleanContent() == "%")
{
relatedLines[relatedLines.Count - 1].MarkedForDeletion = true;
relatedLines.RemoveAt(relatedLines.Count - 1);
}
//make sure to clean out % at the end
if (content == null)
{
content = relatedLines.Select(l => l.Content).StringJoin();
}
//all lines of the foreach are destined to deletion
foreach (var line in relatedLines)
{
line.MarkedForDeletion = true;
}
return(new ParserAction(ParserToken.ForeachLoop, relatedLines, new ForeachExpression()
{
Content = content, Arguments = args
}));
}
public CallExpression(Expression functionName, ArgumentsExpression args)
{
FunctionName = functionName;
Arguments = args;
}
public static Expression Parse(ExpressionWalker ew, Expression left = null)
{
var ret = new IndexerCallExpression(left ?? IdentityExpression.Parse(ew), ArgumentsExpression.Parse(ew, ExpressionToken.LeftBracet, ExpressionToken.RightBracet, false));
return(InteractableExpression.TryExpand(ret, ew));
}
public IndexerCallExpression(Expression left, ArgumentsExpression arguments)
{
Left = left;
Arguments = arguments;
}
public static ArrayExpression Parse(ExpressionWalker ew)
{
return(new ArrayExpression(ArgumentsExpression.Parse(ew, ExpressionToken.LeftBracet, ExpressionToken.RightBracet, true).Arguments));
}
public CallExpression(string functionName, params Expression[] args)
{
FunctionName = IdentityExpression.WrapVariable(functionName);
Arguments = new ArgumentsExpression(args);
}