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// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using NUnit.Framework;
namespace ICSharpCode.NRefactory.CSharp.Parser.Expression
{
[TestFixture]
public class BinaryOperatorExpressionTests
{
#region Precedence Tests
void OperatorPrecedenceTest(string strongOperator, BinaryOperatorType strongOperatorType,
string weakOperator, BinaryOperatorType weakOperatorType, bool vb)
{
string program = "a " + weakOperator + " b " + strongOperator + " c";
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(program);
Assert.AreEqual(weakOperatorType, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
boe = (BinaryOperatorExpression)boe.Right;
Assert.AreEqual(strongOperatorType, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is IdentifierExpression);
program = "a " + strongOperator + " b " + weakOperator + " c";
boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(program);
Assert.AreEqual(weakOperatorType, boe.Operator);
Assert.IsTrue(boe.Right is IdentifierExpression);
boe = (BinaryOperatorExpression)boe.Left;
Assert.AreEqual(strongOperatorType, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is IdentifierExpression);
}
void SameOperatorPrecedenceTest(string firstOperator, BinaryOperatorType firstOperatorType,
string secondOperator, BinaryOperatorType secondOperatorType, bool vb)
{
string program = "a " + secondOperator + " b " + firstOperator + " c";
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(program);
Assert.AreEqual(firstOperatorType, boe.Operator);
Assert.IsTrue(boe.Right is IdentifierExpression);
boe = (BinaryOperatorExpression)boe.Left;
Assert.AreEqual(secondOperatorType, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is IdentifierExpression);
program = "a " + firstOperator + " b " + secondOperator + " c";
boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(program);
Assert.AreEqual(secondOperatorType, boe.Operator);
Assert.IsTrue(boe.Right is IdentifierExpression);
boe = (BinaryOperatorExpression)boe.Left;
Assert.AreEqual(firstOperatorType, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is IdentifierExpression);
}
[Test]
public void OperatorPrecedenceTest()
{
SameOperatorPrecedenceTest("*", BinaryOperatorType.Multiply, "/", BinaryOperatorType.Divide, false);
SameOperatorPrecedenceTest("*", BinaryOperatorType.Multiply, "%", BinaryOperatorType.Modulus, false);
OperatorPrecedenceTest("*", BinaryOperatorType.Multiply, "+", BinaryOperatorType.Add, false);
SameOperatorPrecedenceTest("-", BinaryOperatorType.Subtract, "+", BinaryOperatorType.Add, false);
OperatorPrecedenceTest("+", BinaryOperatorType.Add, "<<", BinaryOperatorType.ShiftLeft, false);
SameOperatorPrecedenceTest(">>", BinaryOperatorType.ShiftRight, "<<", BinaryOperatorType.ShiftLeft, false);
OperatorPrecedenceTest("<<", BinaryOperatorType.ShiftLeft, "==", BinaryOperatorType.Equality, false);
SameOperatorPrecedenceTest("!=", BinaryOperatorType.InEquality, "==", BinaryOperatorType.Equality, false);
OperatorPrecedenceTest("==", BinaryOperatorType.Equality, "&", BinaryOperatorType.BitwiseAnd, false);
OperatorPrecedenceTest("&", BinaryOperatorType.BitwiseAnd, "^", BinaryOperatorType.ExclusiveOr, false);
OperatorPrecedenceTest("^", BinaryOperatorType.ExclusiveOr, "|", BinaryOperatorType.BitwiseOr, false);
OperatorPrecedenceTest("|", BinaryOperatorType.BitwiseOr, "&&", BinaryOperatorType.ConditionalAnd, false);
OperatorPrecedenceTest("&&", BinaryOperatorType.ConditionalAnd, "||", BinaryOperatorType.ConditionalOr, false);
OperatorPrecedenceTest("||", BinaryOperatorType.ConditionalOr, "??", BinaryOperatorType.NullCoalescing, false);
}
#endregion
void TestBinaryOperatorExpressionTest(string program, BinaryOperatorType op)
{
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(program);
Assert.AreEqual(op, boe.Operator);
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is IdentifierExpression);
}
[Test]
public void SubtractionLeftToRight()
{
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>("a - b - c");
Assert.IsTrue(boe.Right is IdentifierExpression);
Assert.IsTrue(boe.Left is BinaryOperatorExpression);
}
[Test]
public void NullCoalescingRightToLeft()
{
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>("a ?? b ?? c");
Assert.IsTrue(boe.Left is IdentifierExpression);
Assert.IsTrue(boe.Right is BinaryOperatorExpression);
}
[Test]
public void BitwiseAndTest()
{
TestBinaryOperatorExpressionTest("a & b", BinaryOperatorType.BitwiseAnd);
}
[Test]
public void BitwiseOrTest()
{
TestBinaryOperatorExpressionTest("a | b", BinaryOperatorType.BitwiseOr);
}
[Test]
public void LogicalAndTest()
{
TestBinaryOperatorExpressionTest("a && b", BinaryOperatorType.ConditionalAnd);
}
[Test]
public void LogicalOrTest()
{
TestBinaryOperatorExpressionTest("a || b", BinaryOperatorType.ConditionalOr);
}
[Test]
public void ExclusiveOrTest()
{
TestBinaryOperatorExpressionTest("a ^ b", BinaryOperatorType.ExclusiveOr);
}
[Test]
public void GreaterThanTest()
{
TestBinaryOperatorExpressionTest("a > b", BinaryOperatorType.GreaterThan);
}
[Test]
public void GreaterThanOrEqualTest()
{
TestBinaryOperatorExpressionTest("a >= b", BinaryOperatorType.GreaterThanOrEqual);
}
[Test]
public void EqualityTest()
{
TestBinaryOperatorExpressionTest("a == b", BinaryOperatorType.Equality);
}
[Test]
public void InEqualityTest()
{
TestBinaryOperatorExpressionTest("a != b", BinaryOperatorType.InEquality);
}
[Test]
public void LessThanTest()
{
TestBinaryOperatorExpressionTest("a < b", BinaryOperatorType.LessThan);
}
[Test]
public void LessThanOrEqualTest()
{
TestBinaryOperatorExpressionTest("a <= b", BinaryOperatorType.LessThanOrEqual);
}
[Test]
public void AddTest()
{
TestBinaryOperatorExpressionTest("a + b", BinaryOperatorType.Add);
}
[Test]
public void SubtractTest()
{
TestBinaryOperatorExpressionTest("a - b", BinaryOperatorType.Subtract);
}
[Test]
public void MultiplyTest()
{
TestBinaryOperatorExpressionTest("a * b", BinaryOperatorType.Multiply);
}
[Test]
public void DivideTest()
{
TestBinaryOperatorExpressionTest("a / b", BinaryOperatorType.Divide);
}
[Test]
public void ModulusTest()
{
TestBinaryOperatorExpressionTest("a % b", BinaryOperatorType.Modulus);
}
[Test]
public void ShiftLeftTest()
{
TestBinaryOperatorExpressionTest("a << b", BinaryOperatorType.ShiftLeft);
}
[Test]
public void ShiftRightTest()
{
TestBinaryOperatorExpressionTest("a >> b", BinaryOperatorType.ShiftRight);
}
[Test]
public void NullCoalescingTest()
{
TestBinaryOperatorExpressionTest("a ?? b", BinaryOperatorType.NullCoalescing);
}
[Test]
public void LessThanOrGreaterTest()
{
const string expr = "i1 < 0 || i1 > (Count - 1)";
BinaryOperatorExpression boe = ParseUtilCSharp.ParseExpression<BinaryOperatorExpression>(expr);
Assert.AreEqual(BinaryOperatorType.ConditionalOr, boe.Operator);
}
}
}
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