/**
* Adds a pattern to the tokenizer and reports a test failure if
* it failed.
*
* @param tokenizer the tokenizer
* @param pattern the pattern to add
*/
private void FailAddPattern(Tokenizer tokenizer, TokenPattern pattern)
{
try {
tokenizer.AddPattern(pattern);
Fail("could add pattern " + pattern.Name);
} catch (ParserCreationException) {
// Failure was expected
}
}
/**
* Adds a pattern to the tokenizer and reports a test failure if
* it failed.
*
* @param tokenizer the tokenizer
* @param pattern the pattern to add
*/
private void AddPattern(Tokenizer tokenizer, TokenPattern pattern)
{
try {
tokenizer.AddPattern(pattern);
} catch (ParserCreationException e) {
Fail("couldn't add pattern " + pattern.Name + ": " +
e.Message);
}
}
public void ParsePatternWithoutSeparators()
{
var tokenizer = new Tokenizer();
tokenizer.AddPattern(IntPatternMatcher.Default, true, false, TestTag);
tokenizer.AddToken("Alsing", false, true, TestTag);
const string text = @"The quick brown 1337 fox jumped 0v3r the little pig";
// XXXX X X
tokenizer.Text = text;
var tokens = tokenizer.Tokenize();
var testTokens = from token in tokens
where token.HasTag(TestTag)
select token;
Assert.AreEqual(3, testTokens.ToList().Count);
}
public void ParsePattern()
{
var tokenizer = new Tokenizer();
tokenizer.AddPattern(IntPatternMatcher.Default, true, true, TestTag);
tokenizer.AddToken("Alsing", false, true, TestTag);
const string text = @"The quick brown 1337 fox jumped 0v3r the little pig 1234";
// XXXX - - XXXX
// only two tokens should be found, the rest
// are either wrong casing or do not have separators next to them
tokenizer.Text = text;
var tokens = tokenizer.Tokenize();
var testTokens = from token in tokens
where token.HasTag(TestTag)
select token;
Assert.AreEqual(2, testTokens.ToList().Count);
}
/// <summary>
/// 渡された JSON ファイルを分解する.
/// </summary>
/// <param name="text">JSON ファイル.</param>
/// <returns>トークンのリスト.</returns>
public static TokenList <TokenType> Tokenize(string text)
{
// Tokenizer オブジェクトを準備する
Tokenizer <TokenType> tokenizer = new Tokenizer <TokenType>();
// トークンの分解規則を追加する
tokenizer.AddPattern(TokenType.NewLine, "\r\n|\r|\n");
tokenizer.AddPattern(TokenType.Comma, ",");
tokenizer.AddPattern(TokenType.Semicolon, ";");
tokenizer.AddPattern(TokenType.Equal, "=");
tokenizer.AddPattern(TokenType.Minus, "-");
tokenizer.AddPattern(TokenType.Or, @"\|");
tokenizer.AddPattern(TokenType.Question, @"\?");
tokenizer.AddPattern(TokenType.OpenComment, @"\(\*");
tokenizer.AddPattern(TokenType.CloseComment, @"\*\)");
tokenizer.AddPattern(TokenType.OpenParen, @"\(");
tokenizer.AddPattern(TokenType.CloseParen, @"\)");
tokenizer.AddPattern(TokenType.OpenBrace, "{");
tokenizer.AddPattern(TokenType.CloseBrace, "}");
tokenizer.AddPattern(TokenType.OpenBracket, @"\[");
tokenizer.AddPattern(TokenType.CloseBracket, @"\]");
tokenizer.AddPattern(TokenType.String, @"(""((?<=\\)""|[^\r\n""])*"")|('([^'])*')");
tokenizer.AddPattern(TokenType.Space, @" +");
tokenizer.AddPattern(TokenType.Name, @"([^\s=""{}\[\]()\|*,;?-]|[ ])+");
// リストにトークンを追加する直前に発生するイベント
// - e.Cancel = true; で追加しない
bool commentStarted = false;
tokenizer.BeforeAddToken += (object sender, BeforeAddTokenEventArgs <TokenType> e) => {
// コメントを Tokenizer で取り除いておく
if (e.TokenMatch.Type == TokenType.OpenComment)
{
commentStarted = true;
e.Cancel = true;
return;
}
if (e.TokenMatch.Type == TokenType.CloseComment)
{
commentStarted = false;
e.Cancel = true;
return;
}
if (commentStarted)
{
e.Cancel = true;
return;
}
// 改行
if (e.TokenMatch.Type == TokenType.NewLine)
{
e.Cancel = true;
return;
}
// スペース
if (e.TokenMatch.Type == TokenType.Space)
{
e.Cancel = true;
return;
}
// 名前
if (e.TokenMatch.Type == TokenType.Name)
{
e.TokenMatch.Text = e.TokenMatch.Text.Trim(' ');
return;
}
};
// トークンに分解する
TokenList <TokenType> tokens = tokenizer.Tokenize(text);
///*
// 分解した内容を表示する (デバッグ用)
foreach (Token <TokenType> token in tokens)
{
Debug.WriteLine(string.Format(
"token: ({0},{1}): {2}: {3}",
token.LineNumber, token.LineIndex,
token.Type, token.Text
));
}
//*/
return(tokens);
}
/// <summary>
/// Tokenizer に分解パターンを追加する.
/// </summary>
/// <param name="name">パターンの名前.</param>
/// <param name="patternText">正規表現のパターン.</param>
public void AddTokenizerPattern(string name, string patternText)
{
Tokenizer.AddPattern(new GeneratedParser.TokenType(name), patternText);
}
