public void You_Can_Compose_Multiple_Rules()
{
var funcDef = new FunctionDefinition();
var classDef = new ClassDefinition();
classDef.Functions = new List <FunctionDefinition>();
var funcParser = Starts
.With
(
The.Keyword("function"),
A.Word(n => funcDef.Name = n),
The.Symbol("("),
The.Symbol(")"),
The.Symbol("{"),
The.Symbol("}")
)
.ReturnsNode(funcDef);
var classParser = Starts
.With
(
The.Keyword("class"),
A.Word(n => classDef.Name = n),
The.Symbol("{"),
A.Rule <FunctionDefinition>(() => funcParser, classDef.Functions.Add),
The.Symbol("}")
)
.ReturnsNode(classDef);
// Generate some tokens to parse with the parser we just made
string src =
@"
class FooBar
{
function DoThing() {}
}
";
var tokens = new Lexer().ToTokens(src).ToArray();
var result = classParser.FeedAll(tokens);
// Assert that it correctly did stuff.
result.AssertComplete();
Assert.Equal(classDef, result.node);
Assert.Equal("FooBar", classDef.Name);
Assert.Contains(funcDef, classDef.Functions);
Assert.Equal("DoThing", funcDef.Name);
}
public void You_Can_Express_An_Empty_Class()
{
var classDef = new ClassDefinition();
var classParser = Starts
.With
(
The.Keyword("class"),
A.Word(name => classDef.Name = name),
The.Symbol("{"),
The.Symbol("}")
)
.ReturnsNode(classDef);
// Generate some tokens to parse with the parser we just made
string src = "class FooBar {}";
var tokens = new Lexer().ToTokens(src);
var result = classParser.FeedAll(tokens);
// Assert that it correctly did stuff.
result.AssertComplete();
Assert.Equal(classDef, result.node);
Assert.Equal("FooBar", classDef.Name);
}