public void Regex2_MatchAndClear()
{
byte[] buffer = null;
// Matching should create one parsed regex
Assert.True(Regex2.IsMatch(String8.Convert("aA", ref buffer), "(?i)A(?-i)A"));
Assert.Single(Regex2.ParsedRegexes);
// Same match should re-use
Assert.True(Regex2.IsMatch(String8.Convert("AA", ref buffer), "(?i)A(?-i)A"));
Assert.Single(Regex2.ParsedRegexes);
// Clear should remove parsed regex
Regex2.ClearRegexes();
Assert.Empty(Regex2.ParsedRegexes);
// Matching should work again
Assert.True(Regex2.IsMatch(String8.Convert("AA", ref buffer), "(?i)A(?-i)A"));
Assert.Single(Regex2.ParsedRegexes);
}
public bool IsMatch(FlexString input, string pattern, RegexOptions options = RegexOptions.None, TimeSpan timeout = default, string captureGroup = null)
{
return(Regex2.IsMatch(input, pattern, options));
}
public void Regex2_Basics()
{
byte[] buffer = null, buffer2 = null;
var sample = String8.Convert("using Microsoft.VisualStudio.TestTools.UnitTesting;", ref buffer2);
// Null and Empty
Assert.Throws <ArgumentNullException>(() => Regex2.IsMatch(sample, null));
Assert.Throws <ArgumentNullException>(() => Regex2.IsMatch(sample, ""));
Assert.False(Regex2.IsMatch(String8.Empty, "[A-Z]"));
Assert.Throws <ArgumentNullException>(() => Regex2.Matches(sample, null).FirstOrDefault());
Assert.Throws <ArgumentNullException>(() => Regex2.Matches(sample, "").FirstOrDefault());
// Basic Expressions
Assert.True(Regex2.IsMatch(String8.Convert("Interesting", ref buffer), "[A-Z]"));
Assert.False(Regex2.IsMatch(String8.Convert("1234567890", ref buffer), "[A-Z]"));
// Regex Parse Errors
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, "(unclosedParen"));
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, "[unclosedBrace"));
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, "(['\"])matching quote backreference\\k1"));
// Corrected Regex Parse Errors (named groups have names removed by Regex2
Assert.True(Regex2.IsMatch(sample, "(?<namedGroup>Tes)tTools"));
// Match Index and Length, Multiple Matches
Assert.Equal("(5, 11: ' Microsoft.'), (15, 14: '.VisualStudio.'), (28, 11: '.TestTools.'), (38, 13: '.UnitTesting;')", string.Join(", ", Regex2.Matches(sample, "[ \\.][^\\.]+[\\.;]").Select((m) => MatchToString(m, sample))));
// Overlapping Matches
Assert.Equal("(5, 46: ' Microsoft.VisualStudio.TestTools.UnitTesting;'), (15, 36: '.VisualStudio.TestTools.UnitTesting;'), (28, 23: '.TestTools.UnitTesting;'), (38, 13: '.UnitTesting;')", string.Join(", ", Regex2.Matches(sample, "[ \\.].+[\\.;]").Select((m) => MatchToString(m, sample))));
// Internal String8.String8 range checks
Assert.Throws <ArgumentNullException>(() => Regex2.IsMatch(new String8(null, sample.Index, sample.Length), "[A-Z]"));
Assert.Throws <ArgumentOutOfRangeException>(() => Regex2.IsMatch(new String8(sample.Array, -1, sample.Length), "[A-Z]"));
Assert.Throws <ArgumentOutOfRangeException>(() => Regex2.IsMatch(new String8(sample.Array, 0, sample.Length + 1), "[A-Z]"));
Assert.Throws <ArgumentOutOfRangeException>(() => Regex2.IsMatch(new String8(sample.Array, sample.Length - 2, 3), "[A-Z]"));
// IgnoreCase option
Assert.True(Regex2.IsMatch(sample, @"[^\.]+Tools"));
Assert.False(Regex2.IsMatch(sample, @"[^\.]+TOOLS"));
Assert.True(Regex2.IsMatch(sample, @"[^\.]+TOOLS", RegexOptions.IgnoreCase));
// Singleline option
var moreLines = String8.Convert("using Microsoft\r\n\t.VisualStudio\r\n\t.TestTools\r\n\t.UnitTesting;", ref buffer);
Assert.False(Regex2.IsMatch(moreLines, "using (.+)VisualStudio"));
Assert.True(Regex2.IsMatch(moreLines, "using (.+)VisualStudio", RegexOptions.Singleline));
// Multiple options
Assert.True(Regex2.IsMatch(moreLines, "using (.+)VISUALSTUDIO", RegexOptions.CultureInvariant | RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Singleline));
// Ignored options don't throw and work with other options
Assert.False(Regex2.IsMatch(sample, @"[^\.]+TOOLS", RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture));
Assert.True(Regex2.IsMatch(sample, @"[^\.]+TOOLS", RegexOptions.IgnoreCase | RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture));
// Unsupported Options throw
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, @"[^\.]+Tools", RegexOptions.Multiline));
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, @"[^\.]+Tools", RegexOptions.IgnorePatternWhitespace));
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, @"[^\.]+Tools", RegexOptions.RightToLeft));
Assert.Throws <ArgumentException>(() => Regex2.IsMatch(sample, @"[^\.]+Tools", RegexOptions.ECMAScript));
// Insensitive case
Assert.True(Regex2.IsMatch(String8.Convert("aA", ref buffer), "(?i)A(?-i)A"));
Assert.True(Regex2.IsMatch(String8.Convert("AA", ref buffer), "(?i)A(?-i)A"));
Assert.False(Regex2.IsMatch(String8.Convert("aa", ref buffer), "(?i)A(?-i)A"));
Assert.False(Regex2.IsMatch(String8.Convert("Aa", ref buffer), "(?i)A(?-i)A"));
}