public Value Visit(MinusExpr expr, Scope scope)
{
return(PerformOperation(expr.Left.Accept(this, scope),
expr.Right.Accept(this, scope),
(a, b) => a - b,
(a, b) => a - b,
(a, b) => { throw new InvalidOperationException(); },
(a, b) => { throw new InvalidOperationException(); }));
}
public void RightPropertyReturnsPassedRhsInstance()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
Assert.AreSame(rhs, target.Right);
}
public void RightPropertyReturnsPassedRhsInstance()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
Assert.AreSame(rhs, target.Right);
}
public void AcceptMethodCallsVisitOnVisitorWithThis()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
var visitor = new Mock <IExpressionVisitor <string, int> >();
target.Accept(visitor.Object, 0);
visitor.Verify(x => x.Visit(target, 0), Times.Once);
}
public void VisitMinusExpr()
{
var target = new EvaluateVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, _scope);
Assert.AreEqual("-1", actual.ToString());
}
public void VisitMinusExpr()
{
var target = new PrintVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, scope);
Assert.AreEqual("1-2", actual);
}
public void AcceptMethodCallsVisitOnVisitorWithThis()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
var visitor = new Mock<IExpressionVisitor<string, int>>();
target.Accept(visitor.Object,0);
visitor.Verify(x => x.Visit(target,0), Times.Once);
}
public void AcceptMethodCallsOnlyVisitOnVisitorWithThisAndNoOtherVisitMethods()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
// throw exception is any other methods called other than the MinusExpr overload.
var visitor = new Mock<IExpressionVisitor<string, int>>(MockBehavior.Strict);
visitor.Setup(x => x.Visit(It.IsAny<MinusExpr>(), It.IsAny<int>())).Returns("");
target.Accept(visitor.Object,0);
}
public void VisitMinusExpr()
{
var target = new TypeCheckingVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, scope);
Assert.AreEqual(ValueType.Int, actual);
}
public void AcceptMethodCallsOnlyVisitOnVisitorWithThisAndNoOtherVisitMethods()
{
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var target = new MinusExpr(lhs, rhs);
// throw exception is any other methods called other than the MinusExpr overload.
var visitor = new Mock <IExpressionVisitor <string, int> >(MockBehavior.Strict);
visitor.Setup(x => x.Visit(It.IsAny <MinusExpr>(), It.IsAny <int>())).Returns("");
target.Accept(visitor.Object, 0);
}
public void VisitMinusExpr()
{
var target = new TypeCheckingVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, scope);
Assert.AreEqual(ValueType.Int, actual);
}
/// <summary>
/// Validate a minus expression.
/// </summary>
/// <param name="e">
/// is the expression. </param>
/// <returns> null. </returns>
public virtual object visit(MinusExpr e)
{
printUnExpr("MINUS", e);
return(null);
}
public string Visit(MinusExpr expr, Scope scope)
{
return(expr.Left.Accept(this, scope) + "-" + expr.Right.Accept(this, scope));
}
public void VisitMinusExpr()
{
var target = new PrintVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, scope);
Assert.AreEqual("1-2", actual);
}
/// <param name="e">
/// is the minus expression. </param>
/// <returns> new sub expression </returns>
public virtual object visit(MinusExpr e)
{
SubExpr se = new SubExpr(make_int_lit(0), e.arg());
return(se.accept(this));
}
/// <param name="e">
/// is the minus expression. </param>
/// <returns> new sub expression </returns>
public virtual object visit(MinusExpr e)
{
e.arg().accept(this);
return(null);
}
public ValueType Visit(MinusExpr expr, Scope scope)
{
return(BinaryOperatorTypeCheck(expr, scope, numericTypesOnly: true));
}
public void VisitMinusExpr()
{
var target = new EvaluateVisitor();
var lhs = new ConstantExpr(1);
var rhs = new ConstantExpr(2);
var expression = new MinusExpr(lhs, rhs);
var actual = target.Visit(expression, _scope);
Assert.AreEqual("-1", actual.ToString());
}
