public static Expression Parse(string source)
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read(source);
var queue = new TokensQueue(tokens);
return Parse(queue);
}
public void ParseSubRuleTest()
{
const string css = "div { p {color: red;} }";
var tokens = new Tokenizer().Read(css);
var context = new ScssParserContext(new TokensQueue(tokens));
var node = RuleSetNode.Parse(context);
AssertExt.AreEqual(new RuleSetNode {
RawSelector = new TypeSelector("div"),
RuleSets = {
Nodes = {
new RuleSetNode {
RawSelector = new TypeSelector("p"),
Rules = {
Nodes = {
new ScssDeclarationNode {
Property = "color",
Value = new ValuesNode { Value = Expression.Parse("red")}
}
}
}
}
}
}
}, node);
}
public void LiteralTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("abc def qwe;");
Assert.AreEqual(6, tokens.Count);
var queue = new TokensQueue(tokens);
Assert.AreEqual("abc", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("def", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("qwe", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(";", queue.Read(TokenType.Semicolon).StringValue);
}
public void MultilineCommentTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("/* comment\r\none*/\r\n/* comment\r\ntwo*/");
Assert.AreEqual(3, tokens.Count);
var queue = new TokensQueue(tokens);
var token = queue.Read();
Assert.AreEqual(TokenType.MultiLineComment, token.Type);
Assert.AreEqual("/* comment\r\none*/", token.StringValue);
queue.Read(TokenType.Whitespace);
token = queue.Read();
Assert.AreEqual(TokenType.MultiLineComment, token.Type);
Assert.AreEqual("/* comment\r\ntwo*/", token.StringValue);
}
public void CssTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("p { color: red; }");
Assert.AreEqual(11, tokens.Count);
var queue = new TokensQueue(tokens);
Assert.AreEqual("p", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("{", queue.Read(TokenType.OpenCurlyBracket).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("color", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(":", queue.Read(TokenType.Colon).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("red", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(";", queue.Read(TokenType.Semicolon).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("}", queue.Read(TokenType.CloseCurlyBracket).StringValue);
}
public void NumberTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("123 456 789.52");
Assert.AreEqual(5, tokens.Count);
var queue = new TokensQueue(tokens);
var token = queue.Read(TokenType.Number);
Assert.AreEqual(123.0, token.NumberValue);
queue.Read(TokenType.Whitespace);
token = queue.Read(TokenType.Number);
Assert.AreEqual(456.0, token.NumberValue);
queue.Read(TokenType.Whitespace);
token = queue.Read(TokenType.Number);
Assert.AreEqual(789.52, token.NumberValue, 0.00000001);
}
public ScssDocumentNode Parse(string scss)
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read(scss);
return ScssDocumentNode.Parse(new ScssParserContext(new TokensQueue(tokens)));
}
public void NumberUnitTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("123px 456em");
Assert.AreEqual(5, tokens.Count);
var queue = new TokensQueue(tokens);
Assert.AreEqual(123.0, queue.Read(TokenType.Number).NumberValue);
Assert.AreEqual("px", queue.Read(TokenType.Literal).StringValue);
queue.Read(TokenType.Whitespace);
Assert.AreEqual(456.0, queue.Read(TokenType.Number).NumberValue);
Assert.AreEqual("em", queue.Read(TokenType.Literal).StringValue);
}
public void VendorPropertyTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("-webkit-property: value;");
Assert.AreEqual(5, tokens.Count);
var queue = new TokensQueue(tokens);
Assert.AreEqual("-webkit-property", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(":", queue.Read(TokenType.Colon).StringValue);
Assert.AreEqual(" ", queue.Read(TokenType.Whitespace).StringValue);
Assert.AreEqual("value", queue.Read(TokenType.Literal).StringValue);
Assert.AreEqual(";", queue.Read(TokenType.Semicolon).StringValue);
}
public void SingleCommentTest()
{
var tokenizer = new Tokenizer();
var tokens = tokenizer.Read("//comment one\r\n//comment two");
Assert.AreEqual(2, tokens.Count);
var queue = new TokensQueue(tokens);
var token = queue.Read();
Assert.AreEqual(TokenType.SingleLineComment, token.Type);
Assert.AreEqual("//comment one\r\n", token.StringValue);
token = queue.Read();
Assert.AreEqual(TokenType.SingleLineComment, token.Type);
Assert.AreEqual("//comment two", token.StringValue);
}