System.Xml.Xsl.XsltOld.NumberAction.CompileAttribute C# (CSharp) Method

        internal override bool CompileAttribute(Compiler compiler) {
            string name   = compiler.Input.LocalName;
            string value  = compiler.Input.Value;
            if (Keywords.Equals(name, compiler.Atoms.Level)) {
                if (value != "any" && value != "multiple" && value != "single") {
                    throw XsltException.Create(Res.Xslt_InvalidAttrValue, Keywords.s_Level, value);
                }
                this.level = value;
            }
            else if (Keywords.Equals(name, compiler.Atoms.Count)) {
                this.countPattern = value;
                this.countKey = compiler.AddQuery(value, /*allowVars:*/true, /*allowKey:*/true, /*pattern*/true);
            }
            else if (Keywords.Equals(name, compiler.Atoms.From)) {
                this.from = value;
                this.fromKey = compiler.AddQuery(value, /*allowVars:*/true, /*allowKey:*/true, /*pattern*/true);
            }
            else if (Keywords.Equals(name, compiler.Atoms.Value)) {
                this.value = value;
                this.valueKey = compiler.AddQuery(value);
            }
            else if (Keywords.Equals(name, compiler.Atoms.Format)) {
                this.formatAvt = Avt.CompileAvt(compiler, value);
            }
            else if (Keywords.Equals(name, compiler.Atoms.Lang)) {
                this.langAvt = Avt.CompileAvt(compiler, value);
            }
            else if (Keywords.Equals(name, compiler.Atoms.LetterValue)) {
                this.letterAvt = Avt.CompileAvt(compiler, value);
            }
            else if (Keywords.Equals(name, compiler.Atoms.GroupingSeparator)) {
                this.groupingSepAvt = Avt.CompileAvt(compiler, value);
            }
            else if (Keywords.Equals(name, compiler.Atoms.GroupingSize)) {
                this.groupingSizeAvt = Avt.CompileAvt(compiler, value);
            }
            else {
               return false;
            }
            return true;
        }