protected override Maybe <IReportNode> Execute(TextParser p) { p.PushBookmark(); var word = p.Word(); if (!word) { return(Error(word)); } int amount = 1; if (word.Match("unlimited")) { amount = -1; p.RemoveBookmark(); } else { var intAmount = word.Integer(); if (intAmount) { amount = intAmount.Value; p.RemoveBookmark(); } else { p.PopBookmark(); } } Maybe <string> name = p.SkipWhitespaces().Before("[").SkipWhitespacesBackwards().AsString(); if (!name) { return(Error(name)); } Maybe <string> code = p.Between("[", "]").AsString(); if (!code) { return(Error(code)); } Maybe <int> price = p.Try(parser => parser.SkipWhitespaces().Word().Match("at") ? p.SkipWhitespaces().Word().Seek(1).Integer() : Maybe <int> .NA ); return(Ok(ReportNode.Object( ReportNode.Int("amount", amount), ReportNode.Str("name", name), ReportNode.Str("code", code), price ? ReportNode.Int("price", price) : null ))); }
public static Maybe <T> Try <T>(this TextParser p, Func <TextParser, Maybe <T> > parser) { p.PushBookmark(); Maybe <T> result = parser(p); if (!result) { p.PopBookmark(); } else { p.RemoveBookmark(); } return(result); }
protected override Maybe <IReportNode> Execute(TextParser p) { var name = p.Before("[").SkipWhitespacesBackwards().AsString(); if (!name) { return(Error(name)); } var code = p.Between("[", "]").AsString(); if (!code) { return(Error(code)); } p.PushBookmark(); var level = p.SkipWhitespaces().Integer(); var days = Maybe <int> .NA; if (level) { p.RemoveBookmark(); days = p.Try(parser => parser.SkipWhitespaces().Between("(", ")").Integer()); } else { p.PopBookmark(); } return(Ok(ReportNode.Object( ReportNode.Str("name", name), ReportNode.Str("code", code), level ? ReportNode.Int("level", level) : null, days ? ReportNode.Int("days", days) : null ))); }
protected override Maybe <IReportNode> Execute(TextParser p) { // don't need dot at the end of line p = p.BeforeBackwards("."); bool own = false; if (p.Match("*")) { own = true; } else if (!Mem(p.Match("-"))) { return(Error(LastResult)); } p = p.SkipWhitespaces(); // unit name // Legatus Legionis Marcus (640) var name = nameParser.Parse(p); if (!name) { return(Error(name)); } // optional on guard flag // , on guard var onGuard = p.Try(parser => parser.After(",").SkipWhitespaces().Match("on guard")); // optional faction name unless this is own unit // , Avalon Empire (15) var faction = p.Try(parser => factionParser.Parse(parser.After(",").SkipWhitespaces())); if (!faction && own) { return(Error(faction)); } // now check for description, it must start with `;` Maybe <string> description = Maybe <string> .NA; p.PushBookmark(); if (p.After(";")) { var descPos = p.Pos - 2; description = new Maybe <string>(p.SkipWhitespaces().SkipWhitespacesBackwards().AsString()); // w/o description p.PopBookmark(); p = p.Slice(descPos - p.Pos + 1); } else { p.RemoveBookmark(); } List <string> flags = new List <string>(); List <IReportNode> items = new List <IReportNode>(); // all element after faction name till first item are flags while (items.Count == 0 && !p.EOF) { // , flag if (!Mem(p.After(",").SkipWhitespaces())) { return(Error(LastResult)); } // there could be no flags var flagOrItem = p.Before(",", ".").RecoverWith(() => p); var item = itemParser.Parse(flagOrItem); if (item) { items.Add(item.Value); } else { flags.Add(flagOrItem.Reset().AsString()); } } var remainingItems = p.Before(".").RecoverWith(() => p).Value; while (!remainingItems.EOF) { var nextItem = remainingItems.After(",").SkipWhitespaces(); if (!nextItem) { break; } var item = itemParser.ParseMaybe(nextItem.Before(",").RecoverWith(() => nextItem)); if (item) { items.Add(item.Value); } } List <IReportNode> props = new List <IReportNode>(); while (!p.EOF) { var nextProp = p.After(".").SkipWhitespaces(); if (!nextProp) { break; } var notSuccess = !nextProp.Success; nextProp = nextProp.Before(".").RecoverWith(() => nextProp); var prop = nextProp.OneOf( weightParser, capacityParser, canStudyParser, skillsParser ); if (prop) { props.Add(prop.Value); } } var result = ReportNode.Object(); result.Add(ReportNode.Bool("own", own)); result.Add(name.Value); result.Add(ReportNode.Key("faction", faction ? ReportNode.Object(faction.Value) : ReportNode.Null())); result.Add(ReportNode.Key("description", description ? ReportNode.Str(description) : ReportNode.Null())); result.Add(ReportNode.Bool("onGuard", onGuard)); result.Add(ReportNode.Key("flags", ReportNode.Array(flags.Select(x => ReportNode.Str(x))))); result.Add(ReportNode.Key("items", ReportNode.Array(items))); result.AddRange(props); return(new Maybe <IReportNode>(result)); }