void expr(out Model.Expression exp)
{
exp = new Model.Expression();
char?sep = null;
Model.Term trm = null;
term(out trm);
exp.Terms.Add(trm);
while (la.kind == 4)
{
Get();
}
while (StartOf(11))
{
if (la.kind == 25 || la.kind == 46)
{
if (la.kind == 46)
{
Get();
sep = '/';
}
else
{
Get();
sep = ',';
}
while (la.kind == 4)
{
Get();
}
}
term(out trm);
if (sep.HasValue)
{
trm.Seperator = sep.Value;
}
exp.Terms.Add(trm);
sep = null;
while (la.kind == 4)
{
Get();
}
}
}
void declaration(out Model.Declaration dec)
{
dec = new Model.Declaration();
Model.Expression exp = null;
string ident = "";
if (la.kind == 24)
{
Get();
dec.Name += "-";
}
identity(out ident);
dec.Name += ident;
while (la.kind == 4)
{
Get();
}
Expect(43);
while (la.kind == 4)
{
Get();
}
expr(out exp);
dec.Expression = exp;
while (la.kind == 4)
{
Get();
}
if (la.kind == 44)
{
Get();
while (la.kind == 4)
{
Get();
}
Expect(45);
dec.Important = true;
while (la.kind == 4)
{
Get();
}
}
}
static string Render(Model.Expression exp)
{
StringBuilder txt = new StringBuilder();
bool first = true;
foreach (Model.Term t in exp.Terms)
{
if (first)
{
first = false;
}
else
{
txt.AppendFormat("{0} ", t.Seperator.HasValue ? t.Seperator.Value.ToString() : "");
}
txt.AppendFormat("<span class=\"term\">{0}</span>", Render(t));
}
return(txt.ToString());
}
void pseudo(out string pseudo)
{
pseudo = "";
Model.Expression exp = null;
string ident = null;
Expect(43);
if (la.kind == 43)
{
Get();
}
while (la.kind == 4)
{
Get();
}
if (la.kind == 24)
{
Get();
pseudo += "-";
}
identity(out ident);
pseudo += ident;
if (la.kind == 10)
{
Get();
pseudo += t.val;
while (la.kind == 4)
{
Get();
}
expr(out exp);
pseudo += exp.ToString();
while (la.kind == 4)
{
Get();
}
Expect(11);
pseudo += t.val;
}
}
void expr(out Model.Expression exp)
{
exp = new Model.Expression();
char? sep = null;
Model.Term trm = null;
term(out trm);
exp.Terms.Add(trm);
while (la.kind == 4) {
Get();
}
while (StartOf(11)) {
if (la.kind == 25 || la.kind == 46) {
if (la.kind == 46) {
Get();
sep = '/';
} else {
Get();
sep = ',';
}
while (la.kind == 4) {
Get();
}
}
term(out trm);
if (sep.HasValue) { trm.Seperator = sep.Value; }
exp.Terms.Add(trm);
sep = null;
while (la.kind == 4) {
Get();
}
}
}
void directive(out Model.Directive dir)
{
dir = new Model.Directive();
Model.Declaration dec = null;
Model.RuleSet rset = null;
Model.Expression exp = null;
Model.Directive dr = null;
string ident = null;
Model.Medium m;
Expect(23);
dir.Name = "@";
if (la.kind == 24)
{
Get();
dir.Name += "-";
}
identity(out ident);
dir.Name += ident;
switch (dir.Name.ToLower())
{
case "@media": dir.Type = Model.DirectiveType.Media; break;
case "@import": dir.Type = Model.DirectiveType.Import; break;
case "@charset": dir.Type = Model.DirectiveType.Charset; break;
case "@page": dir.Type = Model.DirectiveType.Page; break;
case "@font-face": dir.Type = Model.DirectiveType.FontFace; break;
case "@namespace": dir.Type = Model.DirectiveType.Namespace; break;
default: dir.Type = Model.DirectiveType.Other; break;
}
while (la.kind == 4)
{
Get();
}
if (StartOf(4))
{
if (StartOf(5))
{
medium(out m);
dir.Mediums.Add(m);
while (la.kind == 4)
{
Get();
}
while (la.kind == 25)
{
Get();
while (la.kind == 4)
{
Get();
}
medium(out m);
dir.Mediums.Add(m);
while (la.kind == 4)
{
Get();
}
}
}
else
{
expr(out exp);
dir.Expression = exp;
while (la.kind == 4)
{
Get();
}
}
}
if (la.kind == 26)
{
Get();
while (la.kind == 4)
{
Get();
}
if (StartOf(6))
{
while (StartOf(1))
{
if (dir.Type == Model.DirectiveType.Page || dir.Type == Model.DirectiveType.FontFace)
{
declaration(out dec);
dir.Declarations.Add(dec);
while (la.kind == 4)
{
Get();
}
while (la.kind == 27)
{
Get();
while (la.kind == 4)
{
Get();
}
if (la.val.Equals("}"))
{
Get(); return;
}
declaration(out dec);
dir.Declarations.Add(dec);
while (la.kind == 4)
{
Get();
}
}
if (la.kind == 27)
{
Get();
while (la.kind == 4)
{
Get();
}
}
}
else if (StartOf(2))
{
ruleset(out rset);
dir.RuleSets.Add(rset);
while (la.kind == 4)
{
Get();
}
}
else
{
directive(out dr);
dir.Directives.Add(dr);
while (la.kind == 4)
{
Get();
}
}
}
}
Expect(28);
while (la.kind == 4)
{
Get();
}
}
else if (la.kind == 27)
{
Get();
while (la.kind == 4)
{
Get();
}
}
else
{
SynErr(50);
}
}
void term(out Model.Term trm)
{
trm = new Model.Term();
string val = "";
Model.Expression exp = null;
string ident = null;
if (la.kind == 7 || la.kind == 8)
{
QuotedString(out val);
trm.Value = val; trm.Type = Model.TermType.String;
}
else if (la.kind == 9)
{
URI(out val);
trm.Value = val; trm.Type = Model.TermType.Url;
}
else if (la.kind == 47)
{
Get();
identity(out ident);
trm.Value = "U\\" + ident; trm.Type = Model.TermType.Unicode;
}
else if (la.kind == 33)
{
HexValue(out val);
trm.Value = val; trm.Type = Model.TermType.Hex;
}
else if (StartOf(15))
{
bool minus = false;
if (la.kind == 24)
{
Get();
minus = true;
}
if (StartOf(16))
{
identity(out ident);
trm.Value = ident; trm.Type = Model.TermType.String;
if (minus)
{
trm.Value = "-" + trm.Value;
}
while (la.kind == 4)
{
Get();
}
if (StartOf(17))
{
while (la.kind == 34 || la.kind == 36 || la.kind == 43)
{
if (la.kind == 43)
{
Get();
trm.Value += t.val;
if (StartOf(18))
{
if (la.kind == 43)
{
Get();
trm.Value += t.val;
}
if (la.kind == 24)
{
Get();
trm.Value += t.val;
}
identity(out ident);
trm.Value += ident;
}
else if (la.kind == 33)
{
HexValue(out val);
trm.Value += val;
}
else if (StartOf(19))
{
while (la.kind == 3)
{
Get();
trm.Value += t.val;
}
if (la.kind == 34)
{
Get();
trm.Value += ".";
while (la.kind == 3)
{
Get();
trm.Value += t.val;
}
}
}
else
{
SynErr(57);
}
}
else if (la.kind == 34)
{
Get();
trm.Value += t.val;
if (la.kind == 24)
{
Get();
trm.Value += t.val;
}
identity(out ident);
trm.Value += ident;
}
else
{
Get();
trm.Value += t.val;
while (la.kind == 4)
{
Get();
}
if (la.kind == 24)
{
Get();
trm.Value += t.val;
}
if (StartOf(16))
{
identity(out ident);
trm.Value += ident;
}
else if (StartOf(19))
{
while (la.kind == 3)
{
Get();
trm.Value += t.val;
}
}
else
{
SynErr(58);
}
}
}
}
if (la.kind == 10)
{
Get();
while (la.kind == 4)
{
Get();
}
expr(out exp);
Model.Function func = new Model.Function();
func.Name = trm.Value;
func.Expression = exp;
trm.Value = null;
trm.Function = func;
trm.Type = Model.TermType.Function;
while (la.kind == 4)
{
Get();
}
Expect(11);
}
}
else if (StartOf(15))
{
if (la.kind == 29)
{
Get();
trm.Sign = '+';
}
if (minus)
{
trm.Sign = '-';
}
while (la.kind == 3)
{
Get();
val += t.val;
}
if (la.kind == 34)
{
Get();
val += t.val;
while (la.kind == 3)
{
Get();
val += t.val;
}
}
if (StartOf(20))
{
if (la.val.ToLower().Equals("n"))
{
Expect(22);
val += t.val;
if (la.kind == 24 || la.kind == 29)
{
if (la.kind == 29)
{
Get();
val += t.val;
}
else
{
Get();
val += t.val;
}
Expect(3);
val += t.val;
while (la.kind == 3)
{
Get();
val += t.val;
}
}
}
else if (la.kind == 48)
{
Get();
trm.Unit = Model.Unit.Percent;
}
else
{
if (IsUnit())
{
identity(out ident);
try {
trm.Unit = (Model.Unit)Enum.Parse(typeof(Model.Unit), ident, true);
} catch {
errors.SemErr(t.line, t.col, string.Format("Unrecognized unit '{0}'", ident));
}
}
}
}
trm.Value = val; trm.Type = Model.TermType.Number;
}
else
{
SynErr(59);
}
}
else
{
SynErr(60);
}
}
