public AdjacentSiblingSelector(Selector older, Selector younger, int start, int stop, string filePath)
{
Older = older;
Younger = younger;
Start = start;
Stop = stop;
FilePath = filePath;
}
public IncludeSelectorProperty(Selector selector, bool overrides, int start, int stop, string file)
{
Selector = selector;
Overrides = overrides;
Start = start;
Stop = stop;
FilePath = file;
}
internal NotPseudoClassSelector(Selector sel, int start, int stop, string filePath)
: base("not")
{
Selector = sel;
Start = start;
Stop = stop;
FilePath = filePath;
}
public ConcatWithParentSelector(Selector sel, int start, int stop, string filePath)
{
Selector = sel;
Start = start;
Stop = stop;
FilePath = filePath;
}
public static Selector CombineSelectors(Selector outer, Selector inner, int start, int stop, string filePath)
{
if (outer is MultiSelector) throw new InvalidOperationException("Cannot combine MultiSelectors, outer was a MultiSelector");
if (inner is MultiSelector) throw new InvalidOperationException("Cannot combine MultiSelectors, inner was a MultiSelector");
var outerConcat = outer as ConcatWithParentSelector;
var innerConcat = inner as ConcatWithParentSelector;
if (outerConcat == null && innerConcat == null) return new CompoundSelector(outer, inner, start, stop, filePath);
if (outerConcat == null)
{
return new ConcatSelector(new List<Selector>(){outer, innerConcat.Selector}, start, stop, filePath);
}
if (innerConcat == null)
{
return new ConcatWithParentSelector(new CompoundSelector(outerConcat.Selector, inner, start, stop, filePath), start, stop, filePath);
}
return new ConcatWithParentSelector(new ConcatSelector(new List<Selector>() { outerConcat.Selector, innerConcat.Selector }, start, stop, filePath), start, stop, filePath);
}
private CompoundSelector(Selector outer, Selector inner, int start, int stop, string filePath)
{
Outer = outer;
Inner = inner;
Start = start;
Stop = stop;
FilePath = filePath;
}
public ChildSelector(Selector parent, Selector child, int start, int stop, string filePath)
{
Parent = parent;
Child = child;
Start = start;
Stop = stop;
FilePath = filePath;
}
internal ResetProperty(Selector sel, int start, int stop, string file)
{
Selector = sel;
Start = start;
Stop = stop;
FilePath = file;
}
/// <summary>
/// Reverses the transformation applied by BuildEscapeMap on a selector.
/// </summary>
private static Selector ApplyEscapeMap(Selector sel, Dictionary<char, string> map)
{
// shortcircuit the typical case
if (map.Count == 0) return sel;
var multi = sel as MultiSelector;
if (multi != null)
{
var ret = multi.Selectors.Select(s => ApplyEscapeMap(s, map)).ToList();
return new MultiSelector(ret, multi.Start, multi.Stop, multi.FilePath);
}
var childSel = sel as ChildSelector;
if (childSel != null)
{
var parent = ApplyEscapeMap(childSel.Parent, map);
var child = ApplyEscapeMap(childSel.Child, map);
return new ChildSelector(parent, child, childSel.Start, childSel.Stop, childSel.FilePath);
}
var sibling = sel as AdjacentSiblingSelector;
if(sibling != null)
{
var older = ApplyEscapeMap(sibling.Older, map);
var younger = ApplyEscapeMap(sibling.Younger, map);
return new AdjacentSiblingSelector(older, younger, sibling.Start, sibling.Stop, sibling.FilePath);
}
var compound = sel as CompoundSelector;
if (compound != null)
{
var inner = ApplyEscapeMap(compound.Inner, map);
var outer = ApplyEscapeMap(compound.Outer, map);
return new CompoundSelector(inner, outer, compound.Start, compound.Stop, compound.FilePath);
}
var concat = sel as ConcatWithParentSelector;
if (concat != null)
{
var subSel = ApplyEscapeMap(concat.Selector, map);
return new ConcatWithParentSelector(subSel, concat.Start, concat.Stop, concat.FilePath);
}
var attrOp = sel as AttributeOperatorSelector;
if (attrOp != null)
{
var attr = ApplyEscapeMap(attrOp.Attribute, map);
var value = ApplyEscapeMap(attrOp.Value, map);
return new AttributeOperatorSelector(attr, attrOp.Operator, value, attrOp.Start, attrOp.Stop, attrOp.FilePath);
}
var attrSet = sel as AttributeSetSelector;
if (attrSet != null)
{
var attr = ApplyEscapeMap(attrSet.Attribute, map);
return new AttributeSetSelector(attr, attrSet.Start, attrSet.Stop, attrSet.FilePath);
}
var @class = sel as ClassSelector;
if (@class != null)
{
var className = ApplyEscapeMap(@class.Name, map);
return new ClassSelector(className, @class.Start, @class.Stop, @class.FilePath);
}
var concatSel = sel as ConcatSelector;
if (concatSel != null)
{
var sels = concatSel.Selectors.Select(s => ApplyEscapeMap(s, map)).ToList();
return new ConcatSelector(sels, concatSel.Start, concatSel.Stop, concatSel.FilePath);
}
var elem = sel as ElementSelector;
if (elem != null)
{
var name = ApplyEscapeMap(elem.Name, map);
return new ElementSelector(name, elem.Start, elem.Stop, elem.FilePath);
}
var id = sel as IdSelector;
if (id != null)
{
var name = ApplyEscapeMap(id.Name, map);
return new IdSelector(name, id.Start, id.Stop, id.FilePath);
}
var langSel = sel as LangPseudoClassSelector;
if (langSel != null)
{
var lang = ApplyEscapeMap(langSel.Language, map);
return new LangPseudoClassSelector(lang, langSel.Start, langSel.Stop, langSel.FilePath);
}
var not = sel as NotPseudoClassSelector;
if (not != null)
{
var innerSel = ApplyEscapeMap(not.Selector, map);
return new NotPseudoClassSelector(innerSel, not.Start, not.Stop, not.FilePath);
}
// You can't really escape and have valid versions of these selectors
if (sel is NthChildPsuedoClassSelector || sel is NthLastChildPseudoClassSelector) return sel;
// Likewise
if (sel is NthOfTypePseudoClassSelector || sel is NthLastOfTypePseudoClassSelector) return sel;
// Ditto
if (sel is PseudoClassSelector) return sel;
// And lucky #4
if (sel is WildcardSelector) return sel;
throw new InvalidOperationException(sel + " should have been handled but wasn't");
}
internal static List<Property> ParseCssRules(Selector selector, ParserStream stream)
{
var ret = new List<Property>();
while (stream.HasMore() && stream.Peek() != '}')
{
var c = stream.Peek();
if (char.IsWhiteSpace(c))
{
stream.AdvancePastWhiteSpace();
}
else
{
ret.Add(ParseRule(stream));
}
}
stream.AdvancePast("}");
return ret;
}
private static bool AreEqual(Selector knownSingle, Selector other)
{
var multiOther = other as MultiSelector;
if (multiOther != null)
{
return multiOther.Selectors.Any(a => AreEqual(knownSingle, a));
}
if (knownSingle.GetType() != other.GetType()) return false;
string knownStr, otherStr;
using (var str = new StringWriter())
{
knownSingle.Write(str);
knownStr = str.ToString();
}
using (var str = new StringWriter())
{
other.Write(str);
otherStr = str.ToString();
}
return knownStr.Equals(otherStr, StringComparison.InvariantCultureIgnoreCase);
}
private static List<NameValueProperty> FindMatches(Selector sel, List<SelectorAndBlock> resetBlocks)
{
var ret = new List<NameValueProperty>();
var multiSel = sel as MultiSelector;
if(multiSel != null)
{
foreach (var part in multiSel.Selectors)
{
ret.AddRange(FindMatches(part, resetBlocks));
}
return ret;
}
foreach (var block in resetBlocks)
{
if (AreEqual(sel, block.Selector))
{
ret.AddRange(block.Properties.Cast<NameValueProperty>());
}
}
return ret;
}
private static List<Selector> CombineSelectors(Selector s1, Selector s2, int start, int stop, string filePath)
{
var ret = new List<Selector>();
if (!(s1 is MultiSelector) && !(s2 is MultiSelector))
{
var s2Child = s2 as ChildSelector;
if (s2Child != null && s2Child.Parent == null)
{
ret.Add(new ChildSelector(s1, s2Child.Child, start, stop, filePath));
return ret;
}
var s2Sibling = s2 as AdjacentSiblingSelector;
if(s2Sibling != null && s2Sibling.Older == null)
{
ret.Add(new AdjacentSiblingSelector(s1, s2Sibling.Younger, start, stop, filePath));
return ret;
}
ret.Add(CompoundSelector.CombineSelectors(s1, s2, start, stop, filePath));
return ret;
}
var multi1 = s1 as MultiSelector;
var multi2 = s2 as MultiSelector;
var left = new List<Selector>();
var right = new List<Selector>();
if (multi1 != null)
{
left = multi1.Selectors.ToList();
}
else
{
left.Add(s1);
}
if (multi2 != null)
{
right = multi2.Selectors.ToList();
}
else
{
right.Add(s2);
}
foreach (var l in left)
{
foreach (var r in right)
{
ret.AddRange(CombineSelectors(l, r, start, stop, filePath));
}
}
return ret;
}
public ResetSelfProperty BindToSelector(Selector sel)
{
return new ResetSelfProperty(sel, Start, Stop, FilePath);
}
internal ResetSelfProperty(Selector effectiveSelector, int start, int stop, string file)
{
EffectiveSelector = effectiveSelector;
Start = start;
Stop = stop;
FilePath = file;
}
public SelectorAndBlock(Selector selector, IEnumerable<Property> cssRules, IEnumerable<MoreVariable> resetContext, int start, int stop, string filePath)
{
Selector = selector;
Properties = cssRules.ToList().AsReadOnly();
ResetContext = resetContext != null ? resetContext.ToList().AsReadOnly() : null;
Start = start;
Stop = stop;
FilePath = filePath;
}
private static List<Selector> CombineSelectors(Selector s1, Selector s2, int start, int stop, string filePath)
{
var ret = new List<Selector>();
if (!(s1 is MultiSelector) && !(s2 is MultiSelector))
{
ret.Add(CompoundSelector.CombineSelectors(s1, s2, start, stop, filePath));
return ret;
}
var multi1 = s1 as MultiSelector;
var multi2 = s2 as MultiSelector;
var left = new List<Selector>();
var right = new List<Selector>();
if (multi1 != null)
{
left = multi1.Selectors.ToList();
}
else
{
left.Add(s1);
}
if (multi2 != null)
{
right = multi2.Selectors.ToList();
}
else
{
right.Add(s2);
}
foreach (var l in left)
{
foreach (var r in right)
{
ret.AddRange(CombineSelectors(l, r, start, stop, filePath));
}
}
return ret;
}
public IncludeSelectorValue(Selector sel)
{
Selector = sel;
}