public void IsEndOfStream_AtBeginningWithoutData_ReturnsTrue()
{
MemoryStream memStream = new MemoryStream();
BaseInputStream testInputStream = new BaseInputStream(memStream);
bool isEnd = testInputStream.IsEndOfStream();
Assert.IsTrue(isEnd);
}
//
// Exception audit:
//
// Verdict
// Exception wrapping is required.
//
// Rationale
// `java.io.InputStream.close()` throws an exception, see:
//
// https://developer.android.com/reference/java/io/InputStream?hl=en
//
public override void Close()
{
try {
BaseInputStream.Close();
} catch (Java.IO.IOException ex) when(JNIEnv.ShouldWrapJavaException(ex))
{
throw new IOException(ex.Message, ex);
}
}
public void Next_WhenEndStream_ThrowsEndOfStreamException()
{
byte[] buff = new byte[3] {
32, 14, 25
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
for (int i = 0; i < 4; i++, testInputStream.Next())
{
;
}
}
//
// Exception audit:
//
// Verdict
// Exception wrapping is required.
//
// Rationale
// `java.io.InputStream.close()` throws an exception, see:
//
// https://developer.android.com/reference/java/io/InputStream?hl=en
//
protected override void Dispose(bool disposing)
{
if (disposing && BaseInputStream != null)
{
try {
BaseFileChannel = null;
BaseInputStream.Close();
BaseInputStream.Dispose();
} catch (Java.IO.IOException ex) when(JNIEnv.ShouldWrapJavaException(ex))
{
throw new IOException(ex.Message, ex);
}
}
}
public void Next_WhenBuffersAreSwapped_ReturnsCorrectItem()
{
byte[] buff = new byte[10] {
32, 14, 25, 14, 23, 42, 16, 21, 15, 76
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream, 3);
for (int i = 0; i < 10; i++)
{
char curr = testInputStream.Next();
Assert.AreEqual((char)buff[i], curr);
}
}
public void Peek_AtPosition_ReturnsCorrectItemFromStream()
{
byte[] buff = new byte[8] {
32, 14, 25, 14, 12, 51, 25, 33
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
char item;
for (int i = 0; i < 5; i++, testInputStream.Next())
{
item = testInputStream.Peek();
Assert.AreEqual((char)buff[i], item);
}
}
public void Line_NewLinesTracking_ReturnsCorrectNumberOfLines()
{
byte[] buff = new byte[10] {
(byte)'\n', 32, 14, 25, 14, (byte)'\n', 42, 16, (byte)'\n', (byte)'\n'
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
for (int i = 0; i < 10; i++, testInputStream.Next())
{
;
}
Assert.AreEqual(4, testInputStream.Line);
}
public void Tokenize_SkipCarriageReturn_ReturnsNextToken()
{
byte[] buff = Encoding.ASCII.GetBytes("\r\r");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_SingleLineCommentStopOnEndStream_ReturnsCommentToken()
{
byte[] buff = Encoding.ASCII.GetBytes("// some comment here ");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new WordToken("// some comment here ", TokenType.Comment),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Peek_AtEnd_ReturnsEndItem()
{
byte[] buff = new byte[3] {
32, 14, 25
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
for (int i = 0; i < 3; i++, testInputStream.Next())
{
;
}
char last = testInputStream.Peek();
Assert.AreEqual(0, last);
}
public void IsEndOfStream_WhenEnd_ReturnsTrue()
{
byte[] buff = new byte[3] {
32, 14, 25
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
for (int i = 0; i < 3; i++, testInputStream.Next())
{
;
}
bool isEnd = testInputStream.IsEndOfStream();
Assert.IsTrue(isEnd);
}
public void Tokenize_MultilineCommentUnclosed_ReturnsCommentTokenAndCallsOnError()
{
byte[] buff = Encoding.ASCII.GetBytes("/* \n\n**\n this is comment ** ////gvj");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.AreEqual(Lexer.UNCLOSED_MULTILINE_COMMENT, cause));
List <Token> expected = new List <Token>
{
new WordToken("/* \n\n**\n this is comment ** ////gvj", TokenType.Comment),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_Number_ReturnsNumberToken()
{
byte[] buff = Encoding.ASCII.GetBytes(" 1234");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new NumToken(1234),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_StringSingleQuotesSingleQuotesCombination_ReturnsStringToken()
{
byte[] buff = Encoding.ASCII.GetBytes(" 'This is string \"inner\"'");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new WordToken("'This is string \"inner\"'", TokenType.String),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_StringSingleQuotesUnclosed_ReturnsStringTokenAndCallsOnError()
{
byte[] buff = Encoding.ASCII.GetBytes(" 'This is string ");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.AreEqual(cause, Lexer.UNCLOSED_STRING));
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new WordToken("'This is string ", TokenType.Error),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void IsEndOfStream_WhenNotEnd_ReturnsFalse()
{
byte[] buff = new byte[3] {
32, 14, 25
};
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream testInputStream = new BaseInputStream(memStream);
bool isEnd;
for (int i = 0; i < 2; i++)
{
isEnd = testInputStream.IsEndOfStream();
testInputStream.Next();
Assert.IsFalse(isEnd);
}
}
//
// Exception audit:
//
// Verdict
// Exception wrapping is required.
//
// Rationale
// `java.io.InputStream.read(byte[], int, int)` throws an exception, see:
//
// https://developer.android.com/reference/java/io/InputStream?hl=en#read(byte%5B%5D,%20int,%20int)
//
public override int Read(byte[] buffer, int offset, int count)
{
int res;
try {
res = BaseInputStream.Read(buffer, offset, count);
} catch (Java.IO.IOException ex) when(JNIEnv.ShouldWrapJavaException(ex))
{
throw new IOException(ex.Message, ex);
}
if (res == -1)
{
return(0);
}
return(res);
}
public void Tokenize_StringDoubleQuotesEscapeBackslash_ReturnsStringToken()
{
byte[] buff = Encoding.ASCII.GetBytes(" \"This is string \\\\ or this \\ \"");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new WordToken("\"This is string \\\\ or this \\ \"", TokenType.String),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_MultilineComment_ReturnsCommentToken()
{
byte[] buff = Encoding.ASCII.GetBytes("/* \n\n**\n this is comment */**");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new WordToken("/* \n\n**\n this is comment */", TokenType.Comment),
new Token(TokenType.Star),
new Token(TokenType.Star),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_UnresolvedSymbol_ReturnsUnidentifiedTokenAndCallsOnError()
{
byte[] buff = Encoding.ASCII.GetBytes(" Object `");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.AreEqual(cause, Lexer.UNIDENTIFIED_SYMBOL));
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new WordToken("Object", TokenType.Object),
new Token(TokenType.Whitespace),
new WordToken("`", TokenType.Error),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
public void Tokenize_ReservedOrIdentifier_ReturnsReservedToken()
{
byte[] buff = Encoding.ASCII.GetBytes(" Object var someIdentifier132 ");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.Whitespace),
new WordToken("Object", TokenType.Object),
new Token(TokenType.Whitespace),
new WordToken("var", TokenType.Var),
new Token(TokenType.Whitespace),
new WordToken("someIdentifier132", TokenType.Identifier),
new Token(TokenType.Whitespace),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}
static int Main(string[] args)
{
if(args.Length < 2)
{
Console.WriteLine("Input and output destinations not specified!");
return 1;
}
try
{
BaseInputStream stream = new BaseInputStream(args[0]);
Lexer lex = new Lexer(stream);
List<Token> tokens = lex.Tokenize((line, cause) => Console.Out.WriteLine($"On line {line} error: {cause}"));
SyntaxHighlighter.GenerateHtml(tokens, args[1]);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
return 1;
}
return 0;
}
public void Tokenize_Operators_ReturnsOperatorTokens()
{
byte[] buff = Encoding.ASCII.GetBytes("(){},.-+;*/%~&^|?:[]=!><\\=====!==!=>=<=--++>><<&&||*=/=%=+=-=<<=>>=&=^=|=");
MemoryStream memStream = new MemoryStream(buff);
BaseInputStream inputStream = new BaseInputStream(memStream);
Lexer lexer = new Lexer(inputStream);
List <Token> tokens = lexer.Tokenize((line, cause) => Assert.Fail());
List <Token> expected = new List <Token>
{
new Token(TokenType.LeftParen),
new Token(TokenType.RightParen),
new Token(TokenType.LeftBrace),
new Token(TokenType.RightBrace),
new Token(TokenType.Comma),
new Token(TokenType.Dot),
new Token(TokenType.Minus),
new Token(TokenType.Plus),
new Token(TokenType.Semicolon),
new Token(TokenType.Star),
new Token(TokenType.Division),
new Token(TokenType.Modulo),
new Token(TokenType.BitwiseNot),
new Token(TokenType.BitwiseAnd),
new Token(TokenType.BitwiseXor),
new Token(TokenType.BitwiseOr),
new Token(TokenType.QuestionMark),
new Token(TokenType.Colon),
new Token(TokenType.LeftSquareBracket),
new Token(TokenType.RightSquareBracket),
new Token(TokenType.Equal),
new Token(TokenType.Bang),
new Token(TokenType.Greater),
new Token(TokenType.Less),
new Token(TokenType.Backslash),
new WordToken("===", TokenType.StrictEqual),
new WordToken("==", TokenType.EqualEqual),
new WordToken("!==", TokenType.StrictNotEqual),
new WordToken("!=", TokenType.NotEqual),
new WordToken(">=", TokenType.GreaterEqual),
new WordToken("<=", TokenType.LessEqual),
new WordToken("--", TokenType.MinusMinus),
new WordToken("++", TokenType.PlusPlus),
new WordToken(">>", TokenType.RightShift),
new WordToken("<<", TokenType.LeftShift),
new WordToken("&&", TokenType.LogicalAnd),
new WordToken("||", TokenType.LogicalOr),
new WordToken("*=", TokenType.StarEqual),
new WordToken("/=", TokenType.DivideEqual),
new WordToken("%=", TokenType.ModuloEqual),
new WordToken("+=", TokenType.PlusEqual),
new WordToken("-=", TokenType.MinusEqual),
new WordToken("<<=", TokenType.LeftShiftEqual),
new WordToken(">>=", TokenType.RightShiftEqual),
new WordToken("&=", TokenType.BitwiseAndEqual),
new WordToken("^=", TokenType.BitwiseXorEqual),
new WordToken("|=", TokenType.BitwiseOrEqual),
new Token(TokenType.EOF)
};
CollectionAssert.AreEqual(tokens, expected);
}