public void Visit(FunctionalExpression s)
{
foreach (var arg in s._arguments)
{
arg.Accept(this);
}
}
public void AddIntegersFunctionalExpression()
{
var expr = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { new IntegerExpression(1), new IntegerExpression(2) });
Assert.AreEqual(new IntegerExpression(3), expr.Reduce());
Assert.AreSame(IntegerType.Instance, expr.Type);
}
public void MatchWithFunctionalExpression()
{
var expr = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { new IntegerExpression(1), new IntegerExpression(2) });
var expr1 = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { new IntegerExpression(1), new IntegerExpression(2) });
var expr2 = new FunctionalExpression(new SubtractIntegersFunction(), new IExpression[] { new IntegerExpression(1), new IntegerExpression(2) });
var expr3 = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { new IntegerExpression(2), new IntegerExpression(3) });
Assert.IsTrue(expr.Match(expr, null));
Assert.IsTrue(expr.Match(expr1, null));
Assert.IsFalse(expr.Match(expr2, null));
Assert.IsFalse(expr.Match(expr3, null));
}
private FunctionalExpression Function()
{
var name = Consume(TokenType.WORD).Text;
Consume(TokenType.LPAREN);
var function = new FunctionalExpression(name);
while (!Match(TokenType.RPAREN))
{
function.AddArgument(Expression());
Match(TokenType.COMMA);
}
return(function);
}
public void MatchVariableInFunctionalExpression()
{
var one = new IntegerExpression(1);
var two = new IntegerExpression(2);
var expr = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { new NameExpression("a"), new NameExpression("b") });
var expr1 = new FunctionalExpression(new AddIntegersFunction(), new IExpression[] { one, two });
Context <IExpression> ctx = new Context <IExpression>();
Assert.IsTrue(expr.Match(expr1, ctx));
Assert.AreSame(one, ctx.GetValue("a"));
Assert.AreSame(two, ctx.GetValue("b"));
}
private FunctionalExpression function()
{
string name = consume(TokenType.WORD).getText();
consume(TokenType.LPAREN);
FunctionalExpression function = new FunctionalExpression(name);
// добавление аргументов для функции
while (!match(TokenType.RPAREN))
{
function.AddArgument(expression());
match(TokenType.COMMA);
}
return(function);
}
public FunctionStatement(FunctionalExpression function)
{
_function = function;
}