public ScanUntil ( StringBuilder buffer ) : char? | ||
buffer | StringBuilder | |
return | char? |
internal static SpriteBlock ParseSpriteDeclaration(ParserStream stream) { var start = stream.Position; stream.AdvancePast("("); var ignored = new StringBuilder(); var adTo = stream.ScanUntil(ignored, '"', '\''); if (ignored.ToString().Any(a => !char.IsWhiteSpace(a))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } if (adTo == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var nameStart = stream.Position; var name = new StringBuilder(); name.Append(adTo.Value); stream.ScanUntil(name, adTo.Value); name.Append(adTo.Value); var nameStop = stream.Position; stream.AdvancePast(")"); var rules = ParseSpriteRules(stream); return(new SpriteBlock((QuotedStringValue)Value.Parse(name.ToString(), nameStart, nameStop, Current.CurrentFilePath), rules, start, stream.Position, Current.CurrentFilePath)); }
internal static CssCharset ParseCharsetDirective(ParserStream stream) { var start = stream.Position; var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '"', '\''); if (quote == null) { Current.RecordError(ErrorType.Parser, Model.Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var isoName = new StringBuilder(); stream.ScanUntil(isoName, quote.Value); stream.AdvancePast(";"); var isoNameStr = isoName.ToString(); if (!CssCharset.KnownCharset(isoNameStr)) { Current.RecordWarning(ErrorType.Parser, Model.Position.Create(start, stream.Position, Current.CurrentFilePath), "Unrecognized charset"); } return(new CssCharset(new QuotedStringValue(isoNameStr), start, stream.Position)); }
internal static MixinBlock ParseMixinDeclaration(string name, ParserStream stream) { var start = stream.Position; var @params = new StringBuilder(); stream.ScanUntil(@params, ')'); name = name.Trim(); if (name.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected mixin name"); throw new StoppedParsingException(); } if (name.ToLower().In(ReservedWords)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "'" + name + "' cannot be the name of a mixin."); } stream.AdvancePast("{"); return (new MixinBlock( name, ParseMixinDeclarationParameter(@params.ToString(), start), ParseCssRules(InvalidSelector.Singleton, stream), start, stream.Position, Current.CurrentFilePath )); }
internal static MediaBlock ParseMediaDirective(ParserStream stream) { var start = stream.Position; var media = new StringBuilder(); stream.ScanUntil(media, '{'); var mediaStr = media.ToString().Trim(); if (mediaStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected media list"); throw new StoppedParsingException(); } var mediaQuery = MediaQueryParser.Parse(mediaStr, Position.Create(start, stream.Position, Current.CurrentFilePath)); var contained = new List <Block>(); char c; while ((c = stream.Peek()) != '}') { if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } // More directive (probably) if (c == '@') { contained.Add(ParseDirective(stream)); continue; } // Selector + block time! contained.Add(ParseSelectorAndBlock(stream)); } var notAllowed = contained.Where(x => !(x is SelectorAndBlock || x is MoreVariable)); foreach (var illegal in notAllowed) { Current.RecordError(ErrorType.Parser, illegal, "@media can only contain blocks and variable declarations"); } if (notAllowed.Count() != 0) { throw new StoppedParsingException(); } // Skip past } stream.Advance(); return(new MediaBlock(mediaQuery, contained, start, stream.Position, Current.CurrentFilePath)); }
internal static SpriteRule ParseSpriteRule(ParserStream stream) { var start = stream.Position; if (stream.Peek() != '@') { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '@'"); throw new StoppedParsingException(); } stream.Advance(); // Advance past @ var name = new StringBuilder(); while (stream.HasMore() && stream.Peek() != '=') { name.Append(stream.Read()); } stream.AdvancePast("="); // Advance past = var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '\'', '"'); if (quote == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var valueStart = stream.Position; var valueStr = new StringBuilder(); valueStr.Append(quote.Value); stream.ScanUntil(valueStr, quote.Value); valueStr.Append(quote.Value); stream.AdvancePast(";"); var value = (QuotedStringValue)Value.Parse(valueStr.ToString(), valueStart, stream.Position, Current.CurrentFilePath); return(new SpriteRule(name.ToString().Trim(), value, start, stream.Position, Current.CurrentFilePath)); }
internal static FontFaceBlock ParseFontFace(ParserStream stream, int start) { var ignored = new StringBuilder(); stream.ScanUntil(ignored, '{'); var rules = ParseCssRules(InvalidSelector.Singleton, stream); return(new FontFaceBlock(rules, start, stream.Position, Current.CurrentFilePath)); }
internal static Using ParseUsingDirective(ParserStream stream) { var start = stream.Position; var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '"', '\''); if (quote == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var file = new StringBuilder(); stream.ScanUntil(file, quote.Value); int mediaStart = stream.Position; var mediaBuff = new StringBuilder(); stream.ScanUntil(mediaBuff, ';'); int mediaEnd = stream.Position; MediaQuery media; var mediaStr = mediaBuff.ToString().Trim(); if (mediaStr.Length > 0) { media = MediaQueryParser.Parse(mediaStr, Position.Create(mediaStart, mediaEnd, Current.CurrentFilePath)); } else { media = new MediaType(Media.all, Position.NoSite); } return(new Using(file.ToString(), media, start, stream.Position, Current.CurrentFilePath)); }
private static QuotedStringValue ParseQuotedString(char quote, ParserStream stream, IPosition forPosition) { stream.Advance(); // skip the quote var buffer = new StringBuilder(); var x = stream.ScanUntil(buffer, quote); if (x == null) { Current.RecordError(ErrorType.Parser, forPosition, "Expected '" + quote + "'"); throw new StoppedParsingException(); } return(new QuotedStringValue(buffer.ToString())); }
internal static KeyFrame ParseKeyFrame(ParserStream stream) { var start = stream.Position; var buffer = new StringBuilder(); stream.ScanUntil(buffer, '{'); var percents = new List <decimal>(); var percentsStr = buffer.ToString(); foreach (var p in percentsStr.Split(',').Select(s => s.Trim())) { if (p.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected `from`, `to`, or a percentage"); throw new StoppedParsingException(); } decimal percent; if (p.Equals("from", StringComparison.InvariantCultureIgnoreCase)) { percent = 0; } else { if (p.Equals("to", StringComparison.InvariantCultureIgnoreCase)) { percent = 100; } else { if (!p.EndsWith("%") || !decimal.TryParse(p.Substring(0, p.Length - 1), out percent)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected `from`, `to`, or a percentage. Found `" + p + "`"); throw new StoppedParsingException(); } } } percents.Add(percent); } var rules = ParseCssRules(InvalidSelector.Singleton, stream); return(new KeyFrame(percents, rules, start, stream.Position, Current.CurrentFilePath)); }
internal static SelectorAndBlock ParseSelectorAndBlock(ParserStream stream, string selectorStr = null) { var mark = stream.Position; int selectorStop, selectorStart; if (selectorStr.IsNullOrEmpty()) { selectorStart = stream.Position; var selector = new StringBuilder(); stream.ScanUntil(selector, '{'); selectorStop = stream.Position; selectorStr = selector.ToString().Trim(); if (selectorStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(mark, stream.Position, Current.CurrentFilePath), "Expected selector"); throw new StoppedParsingException(); } } else { selectorStop = mark; selectorStart = selectorStop - selectorStr.Length; } var sel = Selector.Parse(selectorStr, selectorStart, selectorStop, Current.CurrentFilePath); var cssRules = ParseCssRules(sel, stream); // Bind @reset() properties to their location w.r.t. selectors cssRules = cssRules.Select( delegate(Property prop) { if (!(prop is ResetSelfProperty)) { return(prop); } return(((ResetSelfProperty)prop).BindToSelector(sel)); } ).ToList(); return(new SelectorAndBlock(sel, cssRules, null, mark, stream.Position, Current.CurrentFilePath)); }
internal static InnerMediaProperty ParseInnerMediaDirective(ParserStream stream) { var start = stream.Position; var media = new StringBuilder(); stream.ScanUntil(media, '{'); var mediaStr = media.ToString().Trim(); if (mediaStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected media list"); throw new StoppedParsingException(); } var mediaQuery = MediaQueryParser.Parse(mediaStr, Position.Create(start, stream.Position, Current.CurrentFilePath)); var props = ParseCssRules(InvalidSelector.Singleton, stream); var blockEquiv = new SelectorAndBlock(InvalidSelector.Singleton, props, null, start, stream.Position, Current.CurrentFilePath); return(new InnerMediaProperty(mediaQuery, blockEquiv, start, stream.Position, Current.CurrentFilePath)); }
internal static CssCharset ParseCharsetDirective(ParserStream stream) { var start = stream.Position; var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '"', '\''); if (quote == null) { Current.RecordError(ErrorType.Parser, Model.Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var isoName = new StringBuilder(); stream.ScanUntil(isoName, quote.Value); stream.AdvancePast(";"); var isoNameStr = isoName.ToString(); if (!CssCharset.KnownCharset(isoNameStr)) { Current.RecordWarning(ErrorType.Parser, Model.Position.Create(start, stream.Position, Current.CurrentFilePath), "Unrecognized charset"); } return new CssCharset(new QuotedStringValue(isoNameStr), start, stream.Position); }
internal static Block ParseDirective(ParserStream stream) { const string import = "import"; const string @using = "using"; const string sprite = "sprite"; const string charset = "charset"; const string media = "media"; const string keyframes = "keyframes"; const string mozKeyframes = "-moz-keyframes"; const string webKeyframes = "-webkit-keyframes"; const string fontFace = "font-face"; const string reset = "reset"; stream.Advance(); // Advance past @ var bufferStart = stream.Position; var buffer = new StringBuilder(); var next = stream.WhichNextInsensitive(buffer, @using, sprite, import, charset, media, keyframes, mozKeyframes, webKeyframes, fontFace, reset); if (next == @using) { return ParseUsingDirective(stream); } if (next == sprite) { return ParseSpriteDeclaration(stream); } if (next == import) { return ParseImportDirective(stream); } if (next == charset) { return ParseCharsetDirective(stream); } if (next == media) { return ParseMediaDirective(stream); } if (next.In(keyframes, mozKeyframes, webKeyframes)) { string prefix = ""; if (next == mozKeyframes) prefix = "-moz-"; if (next == webKeyframes) prefix = "-webkit-"; return ParseKeyFramesDirective(prefix, stream, bufferStart); } if (next == fontFace) { return ParseFontFace(stream, bufferStart); } if (next == reset) { return ParseResetDirective(stream, bufferStart); } stream.PushBack(buffer.ToString()); var leader = new StringBuilder(); var eqOrPara = stream.ScanUntil(leader, '=', '('); if (eqOrPara == '=') { return ParseMoreVariable(leader.ToString(), stream, bufferStart); } return ParseMixinDeclaration(leader.ToString(), stream); }
internal static FontFaceBlock ParseFontFace(ParserStream stream, int start) { var ignored = new StringBuilder(); stream.ScanUntil(ignored, '{'); var rules = ParseCssRules(InvalidSelector.Singleton, stream); return new FontFaceBlock(rules, start, stream.Position, Current.CurrentFilePath); }
internal static KeyFrame ParseKeyFrame(ParserStream stream) { var start = stream.Position; var buffer = new StringBuilder(); stream.ScanUntil(buffer, '{'); var percents = new List<decimal>(); var percentsStr = buffer.ToString(); foreach (var p in percentsStr.Split(',').Select(s => s.Trim())) { if (p.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected `from`, `to`, or a percentage"); throw new StoppedParsingException(); } decimal percent; if (p.Equals("from", StringComparison.InvariantCultureIgnoreCase)) { percent = 0; } else { if (p.Equals("to", StringComparison.InvariantCultureIgnoreCase)) { percent = 100; } else { if (!p.EndsWith("%") || !decimal.TryParse(p.Substring(0, p.Length -1 ), out percent)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected `from`, `to`, or a percentage. Found `" + p + "`"); throw new StoppedParsingException(); } } } percents.Add(percent); } var rules = ParseCssRules(InvalidSelector.Singleton, stream); return new KeyFrame(percents, rules, start, stream.Position, Current.CurrentFilePath); }
internal static SpriteBlock ParseSpriteDeclaration(ParserStream stream) { var start = stream.Position; stream.AdvancePast("("); var ignored = new StringBuilder(); var adTo = stream.ScanUntil(ignored, '"', '\''); if (ignored.ToString().Any(a => !char.IsWhiteSpace(a))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } if (adTo == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var nameStart = stream.Position; var name = new StringBuilder(); name.Append(adTo.Value); stream.ScanUntil(name, adTo.Value); name.Append(adTo.Value); var nameStop = stream.Position; stream.AdvancePast(")"); var rules = ParseSpriteRules(stream); return new SpriteBlock((QuotedStringValue)Value.Parse(name.ToString(), nameStart, nameStop, Current.CurrentFilePath), rules, start, stream.Position, Current.CurrentFilePath); }
internal static Property ParseMixinOrVariableRule(ParserStream stream) { var start = stream.Position; var name = new StringBuilder(); stream.Advance(); // Skip @ bool trimmingWhiteSpace = false; while (stream.HasMore() && !stream.Peek().In('(', '=')) { // Check for nested media block syntax if (name.ToString().Equals("media", StringComparison.InvariantCultureIgnoreCase)) { return(ParseInnerMediaDirective(stream)); } var c = stream.Read(); if (char.IsWhiteSpace(c)) { trimmingWhiteSpace = true; continue; } if (trimmingWhiteSpace || (!char.IsLetterOrDigit(c) && !c.In('-', '_'))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Unexpected character '" + c + "'"); throw new StoppedParsingException(); } name.Append(c); } if (!stream.Peek().In('(', '=')) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '(' or '='"); throw new StoppedParsingException(); } if (stream.Peek() == '=') { stream.Advance(); var localValue = ParseMoreValue(stream); var varName = name.ToString().Trim(); if (varName.ToLower().In(ReservedWords)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "'" + varName + "' cannot be a variable name."); } return(new VariableProperty(varName, localValue, start, stream.Position, Current.CurrentFilePath)); } stream.Advance(); var startParams = stream.Position; var paramStart = stream.Position; var @params = new StringBuilder(); stream.ScanUntilWithNesting(@params, ')'); var paramStop = stream.Position; var options = new StringBuilder(); var optionsStart = stream.Position; stream.ScanUntil(options, ';'); var nameStr = name.ToString().Trim(); var paramsStr = @params.ToString().Trim(); var optionsStr = options.ToString().Trim(); var optional = optionsStr.Contains('?'); var overrides = optionsStr.Contains('!'); var unexpected = optionsStr.Where(c => !char.IsWhiteSpace(c) && c != '?' && c != '!'); if (unexpected.Count() != 0) { if (unexpected.Count() == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, optionsStart + options.Length, Current.CurrentFilePath), "Unexpected character '" + unexpected.ElementAt(0) + "'"); } else { Current.RecordError( ErrorType.Parser, Position.Create( start, optionsStart + options.Length, Current.CurrentFilePath ), "Unexpected characters " + string.Join(", ", unexpected.Select(c => "'" + c + "'")) ); } throw new StoppedParsingException(); } if (name.Length == 0) { if (optional) { Current.RecordWarning(ErrorType.Parser, Position.Create(start, optionsStart + options.Length, Current.CurrentFilePath), "Include directives are always optional, no trailing '?' is needed."); } return(new IncludeSelectorProperty(Selector.Parse(paramsStr, paramStart, paramStop, Current.CurrentFilePath), overrides, start, stream.Position, Current.CurrentFilePath)); } if (name.ToString().Trim().Equals("reset", StringComparison.InvariantCultureIgnoreCase)) { if (paramsStr.Trim().Length != 0) { return(new ResetProperty(Selector.Parse(paramsStr, paramStart, paramStop, Current.CurrentFilePath), start, stream.Position, Current.CurrentFilePath)); } return(new ResetSelfProperty(InvalidSelector.Singleton, start, stream.Position, Current.CurrentFilePath)); } return(new MixinApplicationProperty(nameStr, ParseApplicationParameters(paramsStr, startParams), optional: optional, overrides: overrides, start: start, stop: stream.Position, filePath: Current.CurrentFilePath)); }
internal static ResetBlock ParseResetDirective(ParserStream stream, int start) { var ignored = new StringBuilder(); stream.ScanUntil(ignored, '{'); var contained = new List <Block>(); char c; while ((c = stream.Peek()) != '}') { if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } // More directive (probably) if (c == '@') { contained.Add(ParseDirective(stream)); continue; } // Selector + block time! contained.Add(ParseSelectorAndBlock(stream)); } var notAllowed = contained.Where(x => !(x is SelectorAndBlock || x is MoreVariable)); foreach (var illegal in notAllowed) { Current.RecordError(ErrorType.Parser, illegal, "@reset can only contain blocks and variable declarations"); } if (notAllowed.Count() != 0) { throw new StoppedParsingException(); } // The whole @reset{} block disappears pretty quickly, but the actual // blocks need to know what they were "near" for variable resolution. var variables = contained.OfType <MoreVariable>(); var bound = new List <Block>(); foreach (var x in contained) { var asBlock = x as SelectorAndBlock; if (asBlock != null) { bound.Add(asBlock.InReset(variables)); } else { bound.Add(x); } } // Skip past } stream.Advance(); return(new ResetBlock(bound, start, stream.Position, Current.CurrentFilePath)); }
internal static Property ParseMixinOrVariableRule(ParserStream stream) { var start = stream.Position; var name = new StringBuilder(); stream.Advance(); // Skip @ bool trimmingWhiteSpace = false; while (stream.HasMore() && !stream.Peek().In('(', '=')) { // Check for nested media block syntax if (name.ToString().Equals("media", StringComparison.InvariantCultureIgnoreCase)) { return ParseInnerMediaDirective(stream); } var c = stream.Read(); if (char.IsWhiteSpace(c)) { trimmingWhiteSpace = true; continue; } if (trimmingWhiteSpace || (!char.IsLetterOrDigit(c) && !c.In('-', '_'))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Unexpected character '" + c + "'"); throw new StoppedParsingException(); } name.Append(c); } if (!stream.Peek().In('(', '=')) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '(' or '='"); throw new StoppedParsingException(); } if (stream.Peek() == '=') { stream.Advance(); var localValue = ParseMoreValue(stream); var varName = name.ToString().Trim(); if (varName.ToLower().In(ReservedWords)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "'" + varName + "' cannot be a variable name."); } return new VariableProperty(varName, localValue, start, stream.Position, Current.CurrentFilePath); } stream.Advance(); var startParams = stream.Position; var paramStart = stream.Position; var @params = new StringBuilder(); stream.ScanUntilWithNesting(@params, ')'); var paramStop = stream.Position; var options = new StringBuilder(); var optionsStart = stream.Position; stream.ScanUntil(options, ';'); var nameStr = name.ToString().Trim(); var paramsStr = @params.ToString().Trim(); var optionsStr = options.ToString().Trim(); var optional = optionsStr.Contains('?'); var overrides = optionsStr.Contains('!'); var unexpected = optionsStr.Where(c => !char.IsWhiteSpace(c) && c != '?' && c != '!'); if (unexpected.Count() != 0) { if (unexpected.Count() == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, optionsStart + options.Length, Current.CurrentFilePath), "Unexpected character '" + unexpected.ElementAt(0) + "'"); } else { Current.RecordError( ErrorType.Parser, Position.Create( start, optionsStart + options.Length, Current.CurrentFilePath ), "Unexpected characters "+ string.Join(", ", unexpected.Select(c => "'"+c+"'")) ); } throw new StoppedParsingException(); } if (name.Length == 0) { if (optional) { Current.RecordWarning(ErrorType.Parser, Position.Create(start, optionsStart + options.Length, Current.CurrentFilePath), "Include directives are always optional, no trailing '?' is needed."); } return new IncludeSelectorProperty(Selector.Parse(paramsStr, paramStart, paramStop, Current.CurrentFilePath), overrides, start, stream.Position, Current.CurrentFilePath); } if (name.ToString().Trim().Equals("reset", StringComparison.InvariantCultureIgnoreCase)) { if (paramsStr.Trim().Length != 0) { return new ResetProperty(Selector.Parse(paramsStr, paramStart, paramStop, Current.CurrentFilePath), start, stream.Position, Current.CurrentFilePath); } return new ResetSelfProperty(InvalidSelector.Singleton, start, stream.Position, Current.CurrentFilePath); } return new MixinApplicationProperty(nameStr, ParseApplicationParameters(paramsStr, startParams), optional: optional, overrides: overrides, start: start, stop: stream.Position, filePath: Current.CurrentFilePath); }
internal static MixinBlock ParseMixinDeclaration(string name, ParserStream stream) { var start = stream.Position; var @params = new StringBuilder(); stream.ScanUntil(@params, ')'); name = name.Trim(); if (name.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected mixin name"); throw new StoppedParsingException(); } if (name.ToLower().In(ReservedWords)) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "'" + name + "' cannot be the name of a mixin."); } stream.AdvancePast("{"); return new MixinBlock( name, ParseMixinDeclarationParameter(@params.ToString(), start), ParseCssRules(InvalidSelector.Singleton, stream), start, stream.Position, Current.CurrentFilePath ); }
internal static MediaBlock ParseMediaDirective(ParserStream stream) { var start = stream.Position; var media = new StringBuilder(); stream.ScanUntil(media, '{'); var mediaStr = media.ToString().Trim(); if (mediaStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected media list"); throw new StoppedParsingException(); } var mediaQuery = MediaQueryParser.Parse(mediaStr, Position.Create(start, stream.Position, Current.CurrentFilePath)); var contained = new List<Block>(); char c; while ((c = stream.Peek()) != '}') { if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } // More directive (probably) if (c == '@') { contained.Add(ParseDirective(stream)); continue; } // Selector + block time! contained.Add(ParseSelectorAndBlock(stream)); } var notAllowed = contained.Where(x => !(x is SelectorAndBlock || x is MoreVariable)); foreach (var illegal in notAllowed) { Current.RecordError(ErrorType.Parser, illegal, "@media can only contain blocks and variable declarations"); } if (notAllowed.Count() != 0) { throw new StoppedParsingException(); } // Skip past } stream.Advance(); return new MediaBlock(mediaQuery, contained, start, stream.Position, Current.CurrentFilePath); }
internal static KeyFramesBlock ParseKeyFramesDirective(string prefix, ParserStream stream, int start) { var buffer = new StringBuilder(); stream.ScanUntil(buffer, '{'); var name = buffer.ToString().Trim(); if (name.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected a name for the keyframe animation"); throw new StoppedParsingException(); } if((name[0] != '-' && char.IsDigit(name[0])) || (name[0] == '-' && name.Length > 1 && char.IsDigit(name[1])) || name.Any(a => a != '-' && !char.IsLetterOrDigit(a))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Animation name `"+name+"` is not a valid identifier"); throw new StoppedParsingException(); } var frames = new List<KeyFrame>(); var rules = new List<VariableProperty>(); while (stream.HasMore()) { var c = stream.Peek(); if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } if (c == '}') { break; } if (c == '@') { var rule = ParseMixinOrVariableRule(stream); if (!(rule is VariableProperty)) { Current.RecordError(ErrorType.Parser, rule, "Expected variable declaration"); throw new StoppedParsingException(); } rules.Add((VariableProperty)rule); continue; } frames.Add(ParseKeyFrame(stream)); } if (stream.Peek() != '}') { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '}'"); throw new StoppedParsingException(); } stream.Advance(); // Skip } return new KeyFramesBlock(prefix, name, frames, rules, start, stream.Position, Current.CurrentFilePath); }
internal static Using ParseUsingDirective(ParserStream stream) { var start = stream.Position; var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '"', '\''); if (quote == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var file = new StringBuilder(); stream.ScanUntil(file, quote.Value); int mediaStart = stream.Position; var mediaBuff = new StringBuilder(); stream.ScanUntil(mediaBuff, ';'); int mediaEnd = stream.Position; MediaQuery media; var mediaStr = mediaBuff.ToString().Trim(); if (mediaStr.Length > 0) { media = MediaQueryParser.Parse(mediaStr, Position.Create(mediaStart, mediaEnd, Current.CurrentFilePath)); } else { media = new MediaType(Media.all, Position.NoSite); } return new Using(file.ToString(), media, start, stream.Position, Current.CurrentFilePath); }
internal static SpriteRule ParseSpriteRule(ParserStream stream) { var start = stream.Position; if (stream.Peek() != '@') { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '@'"); throw new StoppedParsingException(); } stream.Advance(); // Advance past @ var name = new StringBuilder(); while (stream.HasMore() && stream.Peek() != '=') { name.Append(stream.Read()); } stream.AdvancePast("="); // Advance past = var ignored = new StringBuilder(); var quote = stream.ScanUntil(ignored, '\'', '"'); if (quote == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected quotation mark"); throw new StoppedParsingException(); } var valueStart = stream.Position; var valueStr = new StringBuilder(); valueStr.Append(quote.Value); stream.ScanUntil(valueStr, quote.Value); valueStr.Append(quote.Value); stream.AdvancePast(";"); var value = (QuotedStringValue)Value.Parse(valueStr.ToString(), valueStart, stream.Position, Current.CurrentFilePath); return new SpriteRule(name.ToString().Trim(), value, start, stream.Position, Current.CurrentFilePath); }
private static QuotedStringValue ParseQuotedString(char quote, ParserStream stream, IPosition forPosition) { stream.Advance(); // skip the quote var buffer = new StringBuilder(); var x = stream.ScanUntil(buffer, quote); if (x == null) { Current.RecordError(ErrorType.Parser, forPosition, "Expected '" + quote + "'"); throw new StoppedParsingException(); } return new QuotedStringValue(buffer.ToString()); }
internal static KeyFramesBlock ParseKeyFramesDirective(string prefix, ParserStream stream, int start) { var buffer = new StringBuilder(); stream.ScanUntil(buffer, '{'); var name = buffer.ToString().Trim(); if (name.Length == 0) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected a name for the keyframe animation"); throw new StoppedParsingException(); } if ((name[0] != '-' && char.IsDigit(name[0])) || (name[0] == '-' && name.Length > 1 && char.IsDigit(name[1])) || name.Any(a => a != '-' && !char.IsLetterOrDigit(a))) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Animation name `" + name + "` is not a valid identifier"); throw new StoppedParsingException(); } var frames = new List <KeyFrame>(); var rules = new List <VariableProperty>(); while (stream.HasMore()) { var c = stream.Peek(); if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } if (c == '}') { break; } if (c == '@') { var rule = ParseMixinOrVariableRule(stream); if (!(rule is VariableProperty)) { Current.RecordError(ErrorType.Parser, rule, "Expected variable declaration"); throw new StoppedParsingException(); } rules.Add((VariableProperty)rule); continue; } frames.Add(ParseKeyFrame(stream)); } if (stream.Peek() != '}') { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected '}'"); throw new StoppedParsingException(); } stream.Advance(); // Skip } return(new KeyFramesBlock(prefix, name, frames, rules, start, stream.Position, Current.CurrentFilePath)); }
internal static Property ParseRule(ParserStream stream) { var start = stream.Position; if (stream.Peek() == '@') { return(ParseMixinOrVariableRule(stream)); } var ruleName = new StringBuilder(); var found = stream.ScanUntil(ruleName, ';', '{', '}'); // Final semi-colon in a block is optional, so inject a ';' if we encounter a '}' in this case if (found == '}') { found = ';'; // trailing semi-colon may be optional if (ruleName[ruleName.Length - 1] == ';') { ruleName = ruleName.Remove(ruleName.Length - 1, 1); } stream.PushBack(new[] { '}' }); } if (found == '{') { var nestedBlock = ParseSelectorAndBlock(stream, ruleName.ToString().Trim()); return(new NestedBlockProperty(nestedBlock, start, stream.Position)); } if (found == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected ';', '{', or '}'"); throw new StoppedParsingException(); } var colon = ruleName.ToString().IndexOf(':'); if (colon == -1) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected ':'"); throw new StoppedParsingException(); } var name = ruleName.ToString().Substring(0, colon).Trim(); var valStr = ruleName.ToString().Substring(colon + 1).Trim() + ";"; if (valStr == ";") { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected value"); throw new StoppedParsingException(); } stream.PushBack(valStr); Value value; if (name.Equals("font", StringComparison.InvariantCultureIgnoreCase)) { // font has a goofy shorthand, needs special treatment value = ParseFontLikeValue(stream); } else { if (name.Equals("background-position")) { // likewise, background-position can often look like a math statement value = ParseBackgroundPositionValue(stream); } else { if (name.Equals("border-radius")) { value = ParseFontLikeValue(stream); } else { value = ParseMoreValue(stream); } } } return(new NameValueProperty(name, value, start, stream.Position, Current.CurrentFilePath)); }
internal static ResetBlock ParseResetDirective(ParserStream stream, int start) { var ignored = new StringBuilder(); stream.ScanUntil(ignored, '{'); var contained = new List<Block>(); char c; while ((c = stream.Peek()) != '}') { if (char.IsWhiteSpace(c)) { stream.AdvancePastWhiteSpace(); continue; } // More directive (probably) if (c == '@') { contained.Add(ParseDirective(stream)); continue; } // Selector + block time! contained.Add(ParseSelectorAndBlock(stream)); } var notAllowed = contained.Where(x => !(x is SelectorAndBlock || x is MoreVariable)); foreach (var illegal in notAllowed) { Current.RecordError(ErrorType.Parser, illegal, "@reset can only contain blocks and variable declarations"); } if (notAllowed.Count() != 0) { throw new StoppedParsingException(); } // The whole @reset{} block disappears pretty quickly, but the actual // blocks need to know what they were "near" for variable resolution. var variables = contained.OfType<MoreVariable>(); var bound = new List<Block>(); foreach (var x in contained) { var asBlock = x as SelectorAndBlock; if (asBlock != null) { bound.Add(asBlock.InReset(variables)); } else { bound.Add(x); } } // Skip past } stream.Advance(); return new ResetBlock(bound, start, stream.Position, Current.CurrentFilePath); }
internal static InnerMediaProperty ParseInnerMediaDirective(ParserStream stream) { var start = stream.Position; var media = new StringBuilder(); stream.ScanUntil(media, '{'); var mediaStr = media.ToString().Trim(); if (mediaStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected media list"); throw new StoppedParsingException(); } var mediaQuery = MediaQueryParser.Parse(mediaStr, Position.Create(start, stream.Position, Current.CurrentFilePath)); var props = ParseCssRules(InvalidSelector.Singleton, stream); var blockEquiv = new SelectorAndBlock(InvalidSelector.Singleton, props, null, start, stream.Position, Current.CurrentFilePath); return new InnerMediaProperty(mediaQuery, blockEquiv, start, stream.Position, Current.CurrentFilePath); }
internal static Block ParseDirective(ParserStream stream) { const string import = "import"; const string @using = "using"; const string sprite = "sprite"; const string charset = "charset"; const string media = "media"; const string keyframes = "keyframes"; const string mozKeyframes = "-moz-keyframes"; const string webKeyframes = "-webkit-keyframes"; const string fontFace = "font-face"; const string reset = "reset"; stream.Advance(); // Advance past @ var bufferStart = stream.Position; var buffer = new StringBuilder(); var next = stream.WhichNextInsensitive(buffer, @using, sprite, import, charset, media, keyframes, mozKeyframes, webKeyframes, fontFace, reset); if (next == @using) { return(ParseUsingDirective(stream)); } if (next == sprite) { return(ParseSpriteDeclaration(stream)); } if (next == import) { return(ParseImportDirective(stream)); } if (next == charset) { return(ParseCharsetDirective(stream)); } if (next == media) { return(ParseMediaDirective(stream)); } if (next.In(keyframes, mozKeyframes, webKeyframes)) { string prefix = ""; if (next == mozKeyframes) { prefix = "-moz-"; } if (next == webKeyframes) { prefix = "-webkit-"; } return(ParseKeyFramesDirective(prefix, stream, bufferStart)); } if (next == fontFace) { return(ParseFontFace(stream, bufferStart)); } if (next == reset) { return(ParseResetDirective(stream, bufferStart)); } stream.PushBack(buffer.ToString()); var leader = new StringBuilder(); var eqOrPara = stream.ScanUntil(leader, '=', '('); if (eqOrPara == '=') { return(ParseMoreVariable(leader.ToString(), stream, bufferStart)); } return(ParseMixinDeclaration(leader.ToString(), stream)); }
internal static Property ParseRule(ParserStream stream) { var start = stream.Position; if (stream.Peek() == '@') { return ParseMixinOrVariableRule(stream); } var ruleName = new StringBuilder(); var found = stream.ScanUntil(ruleName, ';', '{', '}'); // Final semi-colon in a block is optional, so inject a ';' if we encounter a '}' in this case if (found == '}') { found = ';'; // trailing semi-colon may be optional if (ruleName[ruleName.Length - 1] == ';') { ruleName = ruleName.Remove(ruleName.Length - 1, 1); } stream.PushBack(new[] { '}' }); } if (found == '{') { var nestedBlock = ParseSelectorAndBlock(stream, ruleName.ToString().Trim()); return new NestedBlockProperty(nestedBlock, start, stream.Position); } if (found == null) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected ';', '{', or '}'"); throw new StoppedParsingException(); } var colon = ruleName.ToString().IndexOf(':'); if (colon == -1) { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected ':'"); throw new StoppedParsingException(); } var name = ruleName.ToString().Substring(0, colon).Trim(); var valStr = ruleName.ToString().Substring(colon + 1).Trim() + ";"; if (valStr == ";") { Current.RecordError(ErrorType.Parser, Position.Create(start, stream.Position, Current.CurrentFilePath), "Expected value"); throw new StoppedParsingException(); } stream.PushBack(valStr); Value value; if (name.Equals("font", StringComparison.InvariantCultureIgnoreCase)) { // font has a goofy shorthand, needs special treatment value = ParseFontLikeValue(stream); } else { if (name.Equals("background-position")) { // likewise, background-position can often look like a math statement value = ParseBackgroundPositionValue(stream); } else { if (name.Equals("border-radius")) { value = ParseFontLikeValue(stream); } else { value = ParseMoreValue(stream); } } } return new NameValueProperty(name, value, start, stream.Position, Current.CurrentFilePath); }
public void StreamPushBack() { using (var stream = new ParserStream(new StringReader(""))) { var buffer = new StringBuilder(); stream.PushBack("hello world!"); stream.ScanUntil(buffer, '!'); Assert.AreEqual("hello world", buffer.ToString()); Assert.IsFalse(stream.HasMore()); buffer.Clear(); stream.PushBack("world!"); stream.PushBack("hello "); stream.ScanUntil(buffer, '!'); Assert.AreEqual("hello world", buffer.ToString()); Assert.IsFalse(stream.HasMore()); } }
internal static SelectorAndBlock ParseSelectorAndBlock(ParserStream stream, string selectorStr = null) { var mark = stream.Position; int selectorStop, selectorStart; if (selectorStr.IsNullOrEmpty()) { selectorStart = stream.Position; var selector = new StringBuilder(); stream.ScanUntil(selector, '{'); selectorStop = stream.Position; selectorStr = selector.ToString().Trim(); if (selectorStr.IsNullOrEmpty()) { Current.RecordError(ErrorType.Parser, Position.Create(mark, stream.Position, Current.CurrentFilePath), "Expected selector"); throw new StoppedParsingException(); } } else { selectorStop = mark; selectorStart= selectorStop - selectorStr.Length; } var sel = Selector.Parse(selectorStr, selectorStart, selectorStop, Current.CurrentFilePath); var cssRules = ParseCssRules(sel, stream); // Bind @reset() properties to their location w.r.t. selectors cssRules = cssRules.Select( delegate(Property prop) { if (!(prop is ResetSelfProperty)) return prop; return ((ResetSelfProperty)prop).BindToSelector(sel); } ).ToList(); return new SelectorAndBlock(sel, cssRules, null, mark, stream.Position, Current.CurrentFilePath); }