public void WithOr_WhenFirstOptionFailsAndConsumesInput_SecondOptionTried()
{
var first = Parse.Char('a').Once().Concat(Parse.Char('b').Once());
var second = Parse.Char('a').Once();
var p = first.Or(second);
AssertParser.SucceedsWithAll(p, "a");
}
public void CanSpecifyParsersUsingQueryComprehensions()
{
var p = from a in Parse.Char('a').Once()
from bs in Parse.Char('b').Many()
from cs in Parse.Char('c').AtLeastOnce()
select a.Concat(bs).Concat(cs);
AssertParser.SucceedsWithAll(p, "abbbc");
}
public void ConcatenatingParsers_ConcatenatesResults()
{
var p = Parse.Char('a').Once().Then(a =>
Parse.Char('b').Once().Select(b => a.Concat(b)));
AssertParser.SucceedsWithAll(p, "ab");
}
public void Parser_OfAtLeastOneChar_AcceptsManyChars()
{
AssertParser.SucceedsWithAll(Parse.Char('a').AtLeastOnce(), "aaa");
}
public void Parser_OfManyChars_AcceptsManyChars()
{
AssertParser.SucceedsWithAll(Parse.Char('a').Many(), "aaa");
}
public void Parser_OfManyChars_AcceptsEmptyInput()
{
AssertParser.SucceedsWithAll(Parse.Char('a').Many(), "");
}
public void ParsesString_AsSequenceOfChars()
{
var p = Parse.String("abc");
AssertParser.SucceedsWithAll(p, "abc");
}
public void WhenFirstOptionSucceedsButConsumesNothing_SecondOptionTried()
{
var p = Parse.Char('a').Many().XOr(Parse.Char('b').Many());
AssertParser.SucceedsWithAll(p, "bbb");
}