public static StringSegment ParseJsExpression(this StringSegment literal, out JsToken token, bool filterExpression)
{
var peekLiteral = literal.ParseJsToken(out var token1, filterExpression: filterExpression);
peekLiteral = peekLiteral.AdvancePastWhitespace();
if (peekLiteral.IsNullOrEmpty())
{
token = token1;
return(peekLiteral);
}
var peekChar = peekLiteral.GetChar(0);
if (JsTokenUtils.ExpressionTerminator.Contains(peekChar))
{
token = token1;
return(peekLiteral);
}
if (token1 is JsSubtraction)
{
token1 = JsMinus.Operator;
}
if (token1 is JsAddition)
{
token1 = JsPlus.Operator;
}
if (token1 is JsUnaryOperator u)
{
literal = peekLiteral.ParseJsToken(out var token2, filterExpression: filterExpression);
token = new JsUnaryExpression(u, token2);
return(literal);
}
peekLiteral = peekLiteral.AdvancePastWhitespace();
if (!peekLiteral.IsNullOrEmpty())
{
if (filterExpression && peekLiteral.Length > 2)
{
if ((peekLiteral.GetChar(0) == '|' && peekLiteral.GetChar(1) != '|') || (peekLiteral.GetChar(0) == '}' && peekLiteral.GetChar(1) == '}'))
{
token = token1;
return(peekLiteral);
}
}
}
peekLiteral = peekLiteral.ParseJsToken(out JsToken op, filterExpression: filterExpression);
if (op is JsAssignment)
{
op = JsEquals.Operator;
}
if (op is JsBinaryOperator)
{
literal = literal.ParseBinaryExpression(out var expr, filterExpression);
token = expr;
return(literal);
}
token = token1;
return(peekLiteral);
}
protected bool Equals(JsUnaryExpression other) => Equals(Operator, other.Operator) && Equals(Argument, other.Argument);