public static object parse(Expr rootParser, XPathLexer lexer)
{
Dictionary <string, object> funCall = new Dictionary <string, object>();
funCall.Add("type", XPathAnalyzer.ExprType.FUNCTION_CALL);
funCall.Add("name", lexer.next());
lexer.next();
if (lexer.peak().Equals(")"))
{
lexer.next();
}
else
{
funCall.Add("args", new List <object>());
while (!lexer.peak().Equals(")"))
{
((List <object>)funCall["args"]).Add(rootParser.parse(lexer));
if (lexer.peak().Equals(","))
{
lexer.next();
}
}
lexer.next();
}
return(funCall);
}
public static object parse(Expr rootParser, XPathLexer lexer)
{
string token = lexer.peak();
char ch = token[0];
if (ch == '(')
{
lexer.next();
var expr = rootParser.parse(lexer);
if (!lexer.next().Equals(")"))
{
throw new Exception("Error: Unclosed parentheses");
}
return expr;
}
if (ch == '"' || ch == '\'')
{
lexer.next();
Dictionary<string, object> r = new Dictionary<string, object>();
r.Add("type", XPathAnalyzer.ExprType.LITERAL);
r.Add("string", token.Substring(1, (token.Length - 1) - 1));//token.slice(1, -1)
return r;
}
if (ch == '$')
{
throw new Exception("Error: Variable reference are not implemented");
}
if (XPathLexer.RegexTest(token, @"^\d+$") || XPathLexer.RegexTest(token, @"^(\d+)?\.\d+$"))
{
lexer.next();
Dictionary<string, object> r = new Dictionary<string, object>();
r.Add("type", XPathAnalyzer.ExprType.NUMBER);
r.Add("number", float.Parse(token, CultureInfo.InvariantCulture));//token.slice(1, -1)
return r;
}
if (lexer.peak(1) == "(" && !NodeTypeValidator.isValid(lexer.peak()))
{
return FunctionCall.parse(rootParser, lexer);
}
return null;
//throw new Exception("Error: Unhandle Expresion!");
}
public static object parse(Expr rootParser, XPathLexer lexer)
{
string token = lexer.peak();
char ch = token[0];
if (ch == '(')
{
lexer.next();
var expr = rootParser.parse(lexer);
if (!lexer.next().Equals(")"))
{
throw new Exception("Error: Unclosed parentheses");
}
return(expr);
}
if (ch == '"' || ch == '\'')
{
lexer.next();
Dictionary <string, object> r = new Dictionary <string, object>();
r.Add("type", XPathAnalyzer.ExprType.LITERAL);
r.Add("string", token.Substring(1, (token.Length - 1) - 1));//token.slice(1, -1)
return(r);
}
if (ch == '$')
{
throw new Exception("Error: Variable reference are not implemented");
}
if (XPathLexer.RegexTest(token, @"^\d+$") || XPathLexer.RegexTest(token, @"^(\d+)?\.\d+$"))
{
lexer.next();
Dictionary <string, object> r = new Dictionary <string, object>();
r.Add("type", XPathAnalyzer.ExprType.NUMBER);
r.Add("number", float.Parse(token, CultureInfo.InvariantCulture));//token.slice(1, -1)
return(r);
}
if (lexer.peak(1) == "(" && !NodeTypeValidator.isValid(lexer.peak()))
{
return(FunctionCall.parse(rootParser, lexer));
}
return(null);
//throw new Exception("Error: Unhandle Expresion!");
}
public static object parse(Expr rootParser, XPathLexer lexer)
{
lexer.next();
var predicate = rootParser.parse(lexer);
if (!lexer.next().Equals("]"))
{
throw new Exception("Error: Unclosed brackets");
}
return(predicate);
}
public static object parse(Expr rootParser, XPathLexer lexer)
{
lexer.next();
var predicate = rootParser.parse(lexer);
if (!lexer.next().Equals("]"))
{
throw new Exception("Error: Unclosed brackets");
}
return predicate;
}