internal static Exception SyntaxError(ODataLexer lexer, string reason, Exception e = null)
{
var src = lexer.Src;
var token = lexer.Token;
var lineInfo = token.Column >= src.Length
? " Source:" + src + ">>>>EOF<<<<"
: " Source:" + src.Substring(0, token.Column) + ">>>>" + src.Substring(token.Column, 1) + "<<<<" + src.Substring(token.Column + 1);
var msg = String.Concat("Syntax error at line ", token.Line, ", char ", token.Column, ". ", reason, lineInfo);
return(new ODataParserException(msg, token.Line, token.Column, e));
}
private void parseFilterExpr(string filter)
{
this.lexer = new ODataLexer(filter);
var expr = this.parseExpr();
var token = this.lexer.Token;
if (token != null && token.TokenType != TokenType.EOF)
{
throw SyntaxError(String.Concat("Unexpected ", token.TokenType.ToString(), " in $filter: '", token.Value, "'."));
}
var final = Expression.Lambda(expr, this.Builder.x);
this.req.Filter = final;
}
internal LambdaExpression Parse(string filter)
{
if (filter == null)
{
return(null);
}
this.lexer = new ODataLexer(filter);
var expr = this.parseExpr();
var token = this.lexer.Token;
if (token != null && token.TokenType != TokenType.EOF)
{
throw SyntaxError(String.Concat("Unexpected ", token.TokenType.ToString(), " in $filter: '", token.Value, "'."));
}
return(Expression.Lambda(expr, this.Builder.x));
}