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216 lines
11 KiB
216 lines
11 KiB
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this |
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// software and associated documentation files (the "Software"), to deal in the Software |
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// without restriction, including without limitation the rights to use, copy, modify, merge, |
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons |
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// to whom the Software is furnished to do so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in all copies or |
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// substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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// DEALINGS IN THE SOFTWARE. |
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using System; |
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using System.Linq; |
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using ICSharpCode.NRefactory.TypeSystem; |
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using NUnit.Framework; |
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namespace ICSharpCode.NRefactory.CSharp.Analysis |
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{ |
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[TestFixture] |
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public class DefiniteAssignmentTests |
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{ |
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[Test] |
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public void TryFinally() |
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{ |
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BlockStatement block = new BlockStatement { |
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new TryCatchStatement { |
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TryBlock = new BlockStatement { |
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new GotoStatement("LABEL"), |
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new AssignmentExpression(new IdentifierExpression("i"), new PrimitiveExpression(1)) |
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}, |
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CatchClauses = { |
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new CatchClause { |
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Body = new BlockStatement { |
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new AssignmentExpression(new IdentifierExpression("i"), new PrimitiveExpression(3)) |
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} |
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} |
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}, |
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FinallyBlock = new BlockStatement { |
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new AssignmentExpression(new IdentifierExpression("j"), new PrimitiveExpression(5)) |
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} |
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}, |
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new LabelStatement { Label = "LABEL" }, |
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new EmptyStatement() |
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}; |
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TryCatchStatement tryCatchStatement = (TryCatchStatement)block.Statements.First(); |
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Statement stmt1 = tryCatchStatement.TryBlock.Statements.ElementAt(1); |
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Statement stmt3 = tryCatchStatement.CatchClauses.Single().Body.Statements.Single(); |
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Statement stmt5 = tryCatchStatement.FinallyBlock.Statements.Single(); |
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LabelStatement label = (LabelStatement)block.Statements.ElementAt(1); |
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DefiniteAssignmentAnalysis da = new DefiniteAssignmentAnalysis(block, CecilLoaderTests.Mscorlib); |
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da.Analyze("i"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(tryCatchStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.CodeUnreachable, da.GetStatusBefore(stmt1)); |
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Assert.AreEqual(DefiniteAssignmentStatus.CodeUnreachable, da.GetStatusAfter(stmt1)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(stmt3)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(stmt3)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(stmt5)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(stmt5)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(tryCatchStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(label)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(label)); |
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da.Analyze("j"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(tryCatchStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.CodeUnreachable, da.GetStatusBefore(stmt1)); |
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Assert.AreEqual(DefiniteAssignmentStatus.CodeUnreachable, da.GetStatusAfter(stmt1)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(stmt3)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(stmt3)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(stmt5)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(stmt5)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(tryCatchStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(label)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(label)); |
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} |
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[Test] |
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public void ConditionalAnd() |
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{ |
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IfElseStatement ifStmt = new IfElseStatement { |
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Condition = new BinaryOperatorExpression { |
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Left = new BinaryOperatorExpression(new IdentifierExpression("x"), BinaryOperatorType.GreaterThan, new PrimitiveExpression(0)), |
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Operator = BinaryOperatorType.ConditionalAnd, |
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Right = new BinaryOperatorExpression { |
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Left = new ParenthesizedExpression { |
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Expression = new AssignmentExpression { |
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Left = new IdentifierExpression("i"), |
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Operator = AssignmentOperatorType.Assign, |
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Right = new IdentifierExpression("y") |
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} |
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}, |
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Operator = BinaryOperatorType.GreaterThanOrEqual, |
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Right = new PrimitiveExpression(0) |
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} |
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}, |
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TrueStatement = new BlockStatement(), |
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FalseStatement = new BlockStatement() |
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}; |
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DefiniteAssignmentAnalysis da = new DefiniteAssignmentAnalysis(ifStmt, CecilLoaderTests.Mscorlib); |
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da.Analyze("i"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(ifStmt)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(ifStmt.TrueStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(ifStmt.FalseStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(ifStmt)); |
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} |
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[Test] |
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public void ConditionalOr() |
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{ |
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IfElseStatement ifStmt = new IfElseStatement { |
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Condition = new BinaryOperatorExpression { |
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Left = new BinaryOperatorExpression(new IdentifierExpression("x"), BinaryOperatorType.GreaterThan, new PrimitiveExpression(0)), |
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Operator = BinaryOperatorType.ConditionalOr, |
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Right = new BinaryOperatorExpression { |
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Left = new ParenthesizedExpression { |
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Expression = new AssignmentExpression { |
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Left = new IdentifierExpression("i"), |
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Operator = AssignmentOperatorType.Assign, |
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Right = new IdentifierExpression("y") |
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} |
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}, |
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Operator = BinaryOperatorType.GreaterThanOrEqual, |
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Right = new PrimitiveExpression(0) |
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} |
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}, |
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TrueStatement = new BlockStatement(), |
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FalseStatement = new BlockStatement() |
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}; |
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DefiniteAssignmentAnalysis da = new DefiniteAssignmentAnalysis(ifStmt, CecilLoaderTests.Mscorlib); |
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da.Analyze("i"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(ifStmt)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(ifStmt.TrueStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(ifStmt.FalseStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(ifStmt)); |
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} |
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[Test] |
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public void WhileTrue() |
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{ |
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WhileStatement loop = new WhileStatement { |
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Condition = new PrimitiveExpression(true), |
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EmbeddedStatement = new BlockStatement { |
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new AssignmentExpression(new IdentifierExpression("i"), new PrimitiveExpression(0)), |
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new BreakStatement() |
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} |
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}; |
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DefiniteAssignmentAnalysis da = new DefiniteAssignmentAnalysis(loop, CecilLoaderTests.Mscorlib); |
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da.Analyze("i"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.CodeUnreachable, da.GetStatusAfter(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop)); |
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} |
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[Test] |
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public void ForLoop() |
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{ |
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ForStatement loop = new ForStatement { |
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Initializers = { |
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new ExpressionStatement( |
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new AssignmentExpression(new IdentifierExpression("i"), new PrimitiveExpression(0)) |
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) |
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}, |
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Condition = new BinaryOperatorExpression(new IdentifierExpression("i"), BinaryOperatorType.LessThan, new PrimitiveExpression(1000)), |
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Iterators = { |
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new ExpressionStatement( |
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new AssignmentExpression { |
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Left = new IdentifierExpression("i"), |
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Operator = AssignmentOperatorType.Add, |
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Right = new IdentifierExpression("j") |
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} |
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) |
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}, |
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EmbeddedStatement = new ExpressionStatement( |
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new AssignmentExpression(new IdentifierExpression("j"), new IdentifierExpression("i")) |
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)}; |
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DefiniteAssignmentAnalysis da = new DefiniteAssignmentAnalysis(loop, CecilLoaderTests.Mscorlib); |
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da.Analyze("i"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop.Initializers.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop.Initializers.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBeforeLoopCondition(loop)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(loop.Iterators.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop.Iterators.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop)); |
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da.Analyze("j"); |
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Assert.AreEqual(0, da.UnassignedVariableUses.Count); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop.Initializers.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(loop.Initializers.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBeforeLoopCondition(loop)); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusBefore(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop.EmbeddedStatement)); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusBefore(loop.Iterators.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.DefinitelyAssigned, da.GetStatusAfter(loop.Iterators.Single())); |
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Assert.AreEqual(DefiniteAssignmentStatus.PotentiallyAssigned, da.GetStatusAfter(loop)); |
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} |
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} |
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}
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