Add support for new lines and tabs in tokenizer.

Improve tests verbosity.
Replace white spaces with tabs.

3 files changed, 140 insertions, 165 deletions

diff --git a/JSImpl/test/CodeGenerationTests.cpp b/JSImpl/test/CodeGenerationTests.cpp
index d341562..a6ebc6e 100644
--- a/JSImpl/test/CodeGenerationTests.cpp
+++ b/JSImpl/test/CodeGenerationTests.cpp
@@ -9,9 +9,8 @@
 
 TEST(CodeGen, Empty)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -23,9 +22,8 @@ TEST(CodeGen, Empty)
 
 TEST(CodeGen, VarDeclations)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a;";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -37,9 +35,8 @@ TEST(CodeGen, VarDeclations)
 
 TEST(CodeGen, VarDeclationsWithValue)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a = 5;";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -53,9 +50,8 @@ TEST(CodeGen, VarDeclationsWithValue)
 
 TEST(CodeGen, VarDeclationsBinaryExpre)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a = 5 + 6;";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -72,9 +68,8 @@ TEST(CodeGen, VarDeclationsBinaryExpre)
 
 TEST(CodeGen, VariableAssignment)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a; a = 5;";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -89,9 +84,8 @@ TEST(CodeGen, VariableAssignment)
 
 TEST(CodeGen, MultiVariableAssignment)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a; var b = 6; a = b;";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -107,9 +101,8 @@ TEST(CodeGen, MultiVariableAssignment)
 
 TEST(CodeGen, SimpleIf)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a = 5; if (a < 1) { a = 7}";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -129,9 +122,8 @@ TEST(CodeGen, SimpleIf)
 
 TEST(CodeGen, SimpleIfElse)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a = 5; if (a < 1) { a = 3; } else { a = 7; }";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
@@ -154,9 +146,8 @@ TEST(CodeGen, SimpleIfElse)
 
 TEST(CodeGen, SimpleFor)
 {
-	IPLVector<Token> tokens;
 	IPLString source = "var a = 0; for (var i = 0; i < 5; i++ ){ a =  a + i; }";
-	Tokenize(source.c_str(), tokens);
+	IPLVector<Token> tokens = Tokenize(source.c_str()).tokens;
 	auto ast = Parse(tokens);
 	auto asmb = GenerateByteCode(ast, source,
 		ByteCodeGeneratorOptions(ByteCodeGeneratorOptions::OptimizationsType::None, false));
diff --git a/JSImpl/test/LexerTests.cpp b/JSImpl/test/LexerTests.cpp
index 2f13916..a1a25d3 100644
--- a/JSImpl/test/LexerTests.cpp
+++ b/JSImpl/test/LexerTests.cpp
@@ -5,211 +5,210 @@
 
 TEST(Lexer, Less)
 {
-	IPLVector<Token> tokens;
-	Tokenize("<", tokens);
+	IPLVector<Token> tokens = Tokenize("<").tokens;
 
 	ASSERT_EQ(tokens.size(), 2u);
-        ASSERT_EQ(tokens[0].Type, TokenType::Less);
+	 ASSERT_EQ(tokens[0].Type, TokenType::Less);
 }
 
 TEST(Lexer, Number)
 {
-	IPLVector<Token> tokens;
-	Tokenize("213434.24", tokens);
+	IPLVector<Token> tokens = Tokenize("213434.24").tokens;
 
 	ASSERT_EQ(tokens.size(), 2u);
-    ASSERT_EQ(tokens[0].Type, TokenType::Number);
-    ASSERT_EQ(tokens[0].Number, 213434.24);
+	ASSERT_EQ(tokens[0].Type, TokenType::Number);
+	ASSERT_EQ(tokens[0].Number, 213434.24);
 }
 
 
 TEST(Lexer, HexNumber)
 {
-	IPLVector<Token> tokens;
-	auto result = Tokenize("0x10", tokens);
+	const auto res = Tokenize("0x10");
+	const auto& tokens = res.tokens;
 
-	ASSERT_TRUE(result.IsSuccessful);
+	ASSERT_TRUE(res.IsSuccessful);
 	ASSERT_EQ(tokens.size(), 2u);
-    ASSERT_EQ(tokens[0].Type, TokenType::Number);
-    ASSERT_EQ(tokens[0].Number, 16);
+	ASSERT_EQ(tokens[0].Type, TokenType::Number);
+	ASSERT_EQ(tokens[0].Number, 16);
 }
 
 TEST(Lexer, ScientificNotationNumber)
 {
-	IPLVector<Token> tokens;
-	auto result = Tokenize("1e2", tokens);
+	const auto res = Tokenize("1e2");
+	const auto& tokens = res.tokens;
 
-	ASSERT_TRUE(result.IsSuccessful);
+	ASSERT_TRUE(res.IsSuccessful);
 	ASSERT_EQ(tokens.size(), 2u);
-    ASSERT_EQ(tokens[0].Type, TokenType::Number);
-    ASSERT_EQ(tokens[0].Number, 100);
+	ASSERT_EQ(tokens[0].Type, TokenType::Number);
+	ASSERT_EQ(tokens[0].Number, 100);
 }
 
 TEST(Lexer, NumberStartWithNine)
 {
-	IPLVector<Token> tokens;
-	Tokenize("999", tokens);
+	IPLVector<Token> tokens = Tokenize("999").tokens;
 	ASSERT_EQ(tokens.size(), 2u);
-    ASSERT_EQ(tokens[0].Type, TokenType::Number);
-    ASSERT_EQ(tokens[0].Number, 999);
+	ASSERT_EQ(tokens[0].Type, TokenType::Number);
+	ASSERT_EQ(tokens[0].Number, 999);
 }
 
 TEST(Lexer, NumberStartWithZero)
 {
-	IPLVector<Token> tokens;
-	Tokenize("0999", tokens);
+	IPLVector<Token> tokens = Tokenize("0999").tokens;
 	ASSERT_EQ(tokens.size(), 2u);
-    ASSERT_EQ(tokens[0].Type, TokenType::Number);
-    ASSERT_EQ(tokens[0].Number, 999);
+	ASSERT_EQ(tokens[0].Type, TokenType::Number);
+	ASSERT_EQ(tokens[0].Number, 999);
 }
 
 TEST(Lexer, SpaceNewLineSpace)
 {
-	IPLVector<Token> tokens;
-	Tokenize(" \n var a = 4; ", tokens);
-	ASSERT_TRUE(tokens.size() == 6 && tokens[0].Type == TokenType::Var &&
-                tokens[1].Type == TokenType::Identifier &&
-		tokens[2].Type == TokenType::Equal &&
-		tokens[3].Type == TokenType::Number &&
-		tokens[4].Type == TokenType::Semicolon);
+	IPLVector<Token> tokens = Tokenize(" \n var a = 4; ").tokens;
+	ASSERT_TRUE(tokens.size() == 6 && tokens[0].Type == TokenType::Var);
+	ASSERT_TRUE(tokens[1].Type == TokenType::Identifier);
+	ASSERT_TRUE(tokens[2].Type == TokenType::Equal);
+	ASSERT_TRUE(tokens[3].Type == TokenType::Number);
+	ASSERT_TRUE(tokens[4].Type == TokenType::Semicolon);
 }
 
 TEST(Lexer, String)
 {
-	IPLVector<Token> tokens;
-	Tokenize("\"alabala\"", tokens);
+	IPLVector<Token> tokens = Tokenize("\"alabala\"").tokens;
 	ASSERT_TRUE(tokens.size() == 2 && tokens[0].Type == TokenType::String 
-                && tokens[0].Lexeme == "\"alabala\"");
+				&& tokens[0].Lexeme == "\"alabala\"");
 }
 
 TEST(Lexer, StringSingleQuotedStrings)
 {
-	IPLVector<Token> tokens;
-	Tokenize("'alabala'", tokens);
+	IPLVector<Token> tokens = Tokenize("'alabala'").tokens;
 	ASSERT_TRUE(tokens.size() == 2 && tokens[0].Type == TokenType::String && tokens[0].Lexeme == "'alabala'");
 }
 
 TEST(Lexer, KeyWord)
 {
-	IPLVector<Token> tokens;
-	Tokenize("for", tokens);
+	IPLVector<Token> tokens = Tokenize("for").tokens;
 	ASSERT_TRUE(tokens.size() == 2 && tokens[0].Type == TokenType::For);
 }
 
 TEST(Lexer, VariableDeclaration)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var pesho = 10", tokens);
+	IPLVector<Token> tokens = Tokenize("var pesho = 10").tokens;
 
-	ASSERT_TRUE(tokens.size() == 5 && tokens[0].Type == TokenType::Var
-		&& tokens[1].Type == TokenType::Identifier
-		&& tokens[2].Type == TokenType::Equal
-		&& tokens[3].Type == TokenType::Number
-		&& tokens[4].Type == TokenType::Eof);
+	ASSERT_TRUE(tokens.size() == 5 && tokens[0].Type == TokenType::Var);
+	ASSERT_TRUE(tokens[1].Type == TokenType::Identifier);
+	ASSERT_TRUE(tokens[2].Type == TokenType::Equal);
+	ASSERT_TRUE(tokens[3].Type == TokenType::Number);
+	ASSERT_TRUE(tokens[4].Type == TokenType::Eof);
 }
 
 TEST(Lexer, StringError)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("\" aaaa", tokens);
+	const auto res = Tokenize("\" aaaa");
 	ASSERT_TRUE(!res.IsSuccessful && res.Error.Row == 0 && res.Error.Column == 6);
 }
 
 TEST(Lexer, TestWhiteSpaceTokens)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize(" 1\n2  abc\n \n", tokens, { true, false });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 8
-		&& tokens[0].Type == TokenType::Whitespace
-		&& tokens[0].Lexeme == " "
-		&& tokens[1].Type == TokenType::Number
-		&& tokens[1].Number == 1
-		&& tokens[2].Type == TokenType::Whitespace
-		&& tokens[2].Lexeme == "\n"
-		&& tokens[3].Type == TokenType::Number
-		&& tokens[3].Number == 2
-		&& tokens[4].Type == TokenType::Whitespace
-		&& tokens[4].Lexeme == "  "
-		&& tokens[5].Type == TokenType::Identifier
-		&& tokens[5].Lexeme == "abc"
-		&& tokens[6].Type == TokenType::Whitespace
-		&& tokens[6].Lexeme == "\n \n"
-		&& tokens[7].Type == TokenType::Eof);
+	const auto res = Tokenize(" 1\n2  abc\n \n", { true, false });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 11);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Whitespace);
+	ASSERT_TRUE(tokens[0].Lexeme == "");
+	ASSERT_TRUE(tokens[1].Type == TokenType::Number);
+	ASSERT_TRUE(tokens[1].Number == 1);
+	ASSERT_TRUE(tokens[2].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[2].Lexeme == "");
+	ASSERT_TRUE(tokens[3].Type == TokenType::Number);
+	ASSERT_TRUE(tokens[3].Number == 2);
+	ASSERT_TRUE(tokens[4].Type == TokenType::Whitespace);
+	ASSERT_TRUE(tokens[4].Lexeme == "");
+	ASSERT_TRUE(tokens[5].Type == TokenType::Whitespace);
+	ASSERT_TRUE(tokens[5].Lexeme == "");
+	ASSERT_TRUE(tokens[6].Type == TokenType::Identifier);
+	ASSERT_TRUE(tokens[6].Lexeme == "abc");
+	ASSERT_TRUE(tokens[7].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[7].Lexeme == "");
+	ASSERT_TRUE(tokens[8].Type == TokenType::Whitespace);
+	ASSERT_TRUE(tokens[8].Lexeme == "");
+	ASSERT_TRUE(tokens[9].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[9].Lexeme == "");
+	ASSERT_TRUE(tokens[10].Type == TokenType::Eof);
 }
 
 TEST(Lexer, SimpleComment)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("//comment", tokens, { false, true });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 2
-		&& tokens[0].Type == TokenType::Comment
-		&& tokens[0].Lexeme == "//comment"
-		&& tokens[1].Type == TokenType::Eof);
+	const auto res = Tokenize("//comment", { false, true });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 2);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[0].Lexeme == "//comment");
+	ASSERT_TRUE(tokens[1].Type == TokenType::Eof);
 }
 
 TEST(Lexer, SimpleMultiLineComment)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("/*comment\ncomment*/", tokens, { false, true });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 2
-		&& tokens[0].Type == TokenType::Comment
-		&& tokens[0].Lexeme == "/*comment\ncomment*/"
-		&& tokens[1].Type == TokenType::Eof);
+	const auto res = Tokenize("/*comment\ncomment*/", { false, true });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 2);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[0].Lexeme == "/*comment\ncomment*/");
+	ASSERT_TRUE(tokens[1].Type == TokenType::Eof);
 }
 
 TEST(Lexer, ConsecutiveMultiLineComment)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("/*comment1\ncomment1*//*comment2\ncomment2*/", tokens, { false, true });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 3
-		&& tokens[0].Type == TokenType::Comment
-		&& tokens[0].Lexeme == "/*comment1\ncomment1*/"
-		&& tokens[1].Type == TokenType::Comment
-		&& tokens[1].Lexeme == "/*comment2\ncomment2*/"
-		&& tokens[2].Type == TokenType::Eof);
+	const auto res = Tokenize("/*comment1\ncomment1*//*comment2\ncomment2*/", { false, true });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 3);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[0].Lexeme == "/*comment1\ncomment1*/");
+	ASSERT_TRUE(tokens[1].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[1].Lexeme == "/*comment2\ncomment2*/");
+	ASSERT_TRUE(tokens[2].Type == TokenType::Eof);
 }
 
 TEST(Lexer, ConsecutiveMultiLineCommentWithSpace)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("/*comment1\ncomment1*/\n\n\n/*comment2\ncomment2*/", tokens, { false, true });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 3
-		&& tokens[0].Type == TokenType::Comment
-		&& tokens[0].Lexeme == "/*comment1\ncomment1*/"
-		&& tokens[1].Type == TokenType::Comment
-		&& tokens[1].Lexeme == "/*comment2\ncomment2*/"
-		&& tokens[2].Type == TokenType::Eof);
+	const auto res = Tokenize("/*comment1\ncomment1*/\n\n\n/*comment2\ncomment2*/", { false, true });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 3);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[0].Lexeme == "/*comment1\ncomment1*/");
+	ASSERT_TRUE(tokens[1].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[1].Lexeme == "/*comment2\ncomment2*/");
+	ASSERT_TRUE(tokens[2].Type == TokenType::Eof);
 }
 
 TEST(Lexer, ConsecutiveMultiLineCommentWithSpaceWithTokens)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize("//comment1\n/*comment2\ncomment2*/\n\n\n/*comment3\ncomment3*/", tokens, { true, true });
-	ASSERT_TRUE(res.IsSuccessful
-		&& tokens.size() == 6
-		&& tokens[0].Type == TokenType::Comment
-		&& tokens[0].Lexeme == "//comment1"
-		&& tokens[1].Type == TokenType::Whitespace
-		&& tokens[1].Lexeme == "\n"
-		&& tokens[2].Type == TokenType::Comment
-		&& tokens[2].Lexeme == "/*comment2\ncomment2*/"
-		&& tokens[3].Type == TokenType::Whitespace
-		&& tokens[3].Lexeme == "\n\n\n"
-		&& tokens[4].Type == TokenType::Comment
-		&& tokens[4].Lexeme == "/*comment3\ncomment3*/"
-		&& tokens[5].Type == TokenType::Eof);
+	const auto res = Tokenize("//comment1\n/*comment2\ncomment2*/\n\n\n/*comment3\ncomment3*/", { true, true });
+	const auto& tokens = res.tokens;
+	ASSERT_TRUE(res.IsSuccessful);
+	ASSERT_TRUE(tokens.size() == 8);
+	ASSERT_TRUE(tokens[0].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[0].Lexeme == "//comment1");
+	ASSERT_TRUE(tokens[1].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[1].Lexeme == "");
+	ASSERT_TRUE(tokens[2].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[2].Lexeme == "/*comment2\ncomment2*/");
+	ASSERT_TRUE(tokens[3].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[3].Lexeme == "");
+	ASSERT_TRUE(tokens[4].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[4].Lexeme == "");
+	ASSERT_TRUE(tokens[5].Type == TokenType::NewLine);
+	ASSERT_TRUE(tokens[5].Lexeme == "");
+	ASSERT_TRUE(tokens[6].Type == TokenType::Comment);
+	ASSERT_TRUE(tokens[6].Lexeme == "/*comment3\ncomment3*/");
+	ASSERT_TRUE(tokens[7].Type == TokenType::Eof);
 }
 
 TEST(Lexer, CommentError)
 {
-	IPLVector<Token> tokens;
-	const auto& res = Tokenize(" aa\n /*", tokens);
+	auto res = Tokenize(" aa\n /*");
 	ASSERT_TRUE(!res.IsSuccessful && res.Error.Row == 1 &&
-                res.Error.Column == 3);
+				res.Error.Column == 3);
 }
 
diff --git a/JSImpl/test/ParserTests.cpp b/JSImpl/test/ParserTests.cpp
index a5b0c99..91534c5 100644
--- a/JSImpl/test/ParserTests.cpp
+++ b/JSImpl/test/ParserTests.cpp
@@ -10,8 +10,7 @@
 
 TEST(Parser, ParseUnaryExpr)
 {
-	IPLVector<Token> tokens;
-	Tokenize("function pesho() { var a = 0; return a; } var a = \"3\";", tokens);
+	IPLVector<Token> tokens = Tokenize("function pesho() { var a = 0; return a; } var a = \"3\";").tokens;
 
 	// TODO make actual test :D
 	auto expr = Parse(tokens);
@@ -23,8 +22,7 @@ TEST(Parser, ParseUnaryExpr)
 
 TEST(Parser, VariableDeclaration)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var s = 0;", tokens);
+	IPLVector<Token> tokens = Tokenize("var s = 0;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -36,8 +34,7 @@ TEST(Parser, VariableDeclaration)
 
 TEST(Parser, Assignment)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var s = 0; s = 100;", tokens);
+	IPLVector<Token> tokens = Tokenize("var s = 0; s = 100;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -49,8 +46,7 @@ TEST(Parser, Assignment)
 
 TEST(Parser, VariableDeclarationAdditionOfLiterals)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var s = 5 + 6;", tokens);
+	IPLVector<Token> tokens = Tokenize("var s = 5 + 6;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -62,8 +58,7 @@ TEST(Parser, VariableDeclarationAdditionOfLiterals)
 
 TEST(Parser, VariableDeclarationAdditionOfVariables)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var a = 5; var b = 4; var c = a + b;", tokens);
+	IPLVector<Token> tokens = Tokenize("var a = 5; var b = 4; var c = a + b;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -79,8 +74,7 @@ TEST(Parser, VariableDeclarationAdditionOfVariables)
 
 TEST(Parser, VariableDeclarationMultiplicationOfLiterals)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var s = 5 * 6;", tokens);
+	IPLVector<Token> tokens = Tokenize("var s = 5 * 6;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -92,8 +86,7 @@ TEST(Parser, VariableDeclarationMultiplicationOfLiterals)
 
 TEST(Parser, VariableDeclarationMultiplicationOfVariables)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var a = 5; var b = 4; var c = a * b;", tokens);
+	IPLVector<Token> tokens = Tokenize("var a = 5; var b = 4; var c = a * b;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -110,8 +103,7 @@ TEST(Parser, VariableDeclarationMultiplicationOfVariables)
 
 TEST(Parser, Unary)
 {
-	IPLVector<Token> tokens;
-	Tokenize("var a = 5; a++; var b = 6; --b;", tokens);
+	IPLVector<Token> tokens = Tokenize("var a = 5; a++; var b = 6; --b;").tokens;
 
 	auto expr = Parse(tokens);
 	std::ostringstream output;
@@ -127,8 +119,7 @@ TEST(Parser, Unary)
 TEST(Parser, If)
 {
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var a = 5; var b = 3; if(a == 5){a++; b++;} b++;", tokens);
+		IPLVector<Token> tokens = Tokenize("var a = 5; var b = 3; if(a == 5){a++; b++;} b++;").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -140,8 +131,7 @@ TEST(Parser, If)
 		ASSERT_DOUBLE_EQ(i.ModifyVariable("b"), 5.0);
 	}
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var a = 5; var b = 3; if(a == 5)a++; b++; b++;", tokens);
+		IPLVector<Token> tokens = Tokenize("var a = 5; var b = 3; if(a == 5)a++; b++; b++;").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -154,8 +144,7 @@ TEST(Parser, If)
 	}
 
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var a = 5; var b = 3; if(a != 5)a++; b++; b++;", tokens);
+		IPLVector<Token> tokens = Tokenize("var a = 5; var b = 3; if(a != 5)a++; b++; b++;").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -168,8 +157,7 @@ TEST(Parser, If)
 	}
 
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var a = 5; var b = 3; if(a != 5){a++;} else { b++;}b++;", tokens);
+		IPLVector<Token> tokens = Tokenize("var a = 5; var b = 3; if(a != 5){a++;} else { b++;}b++;").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -182,8 +170,7 @@ TEST(Parser, If)
 	}
 
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var a = 5; var b = 3; if(a == 5){a++;} else { b++;}b++;", tokens);
+		IPLVector<Token> tokens = Tokenize("var a = 5; var b = 3; if(a == 5){a++;} else { b++;}b++;").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -199,8 +186,7 @@ TEST(Parser, If)
 TEST(Parser, For)
 {
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var i = 0; for (var j = 0; j < 10; j++) { i = i + j; }", tokens);
+		IPLVector<Token> tokens = Tokenize("var i = 0; for (var j = 0; j < 10; j++) { i = i + j; }").tokens;
 
 		auto expr = Parse(tokens);
 		std::ostringstream output;
@@ -210,8 +196,7 @@ TEST(Parser, For)
 		ASSERT_DOUBLE_EQ(i.ModifyVariable("i"), 45.0);
 	}
 	{
-		IPLVector<Token> tokens;
-		Tokenize("var i = 0; for (var j = 0; j < 10; j++) i = i + j;", tokens);
+		IPLVector<Token> tokens = Tokenize("var i = 0; for (var j = 0; j < 10; j++) i = i + j;").tokens;
 		auto expr = Parse(tokens);
 		std::ostringstream output;
 		ASTInterpreter i;