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using System;
using System.Linq;
using Mono.Cecil;
using Mono.Cecil.Cil;
using NUnit.Framework;
namespace Mono.Cecil.Tests {
[TestFixture]
public class VariableTests : BaseTestFixture {
[Test]
public void AddVariableIndex ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (y);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (1, y.Index);
}
[Test]
public void RemoveAtVariableIndex ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
var z = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (y);
body.Variables.Add (z);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (1, y.Index);
Assert.AreEqual (2, z.Index);
body.Variables.RemoveAt (1);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (-1, y.Index);
Assert.AreEqual (1, z.Index);
}
[Test]
public void RemoveVariableIndex ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
var z = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (y);
body.Variables.Add (z);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (1, y.Index);
Assert.AreEqual (2, z.Index);
body.Variables.Remove (y);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (-1, y.Index);
Assert.AreEqual (1, z.Index);
}
[Test]
public void RemoveVariableWithDebugInfo ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var il = body.GetILProcessor ();
il.Emit (OpCodes.Ret);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
var z = new VariableDefinition (object_ref);
var z2 = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (y);
body.Variables.Add (z);
body.Variables.Add (z2);
var scope = new ScopeDebugInformation (body.Instructions [0], body.Instructions [0]);
method.DebugInformation = new MethodDebugInformation (method) {
Scope = scope
};
scope.Variables.Add (new VariableDebugInformation (x.index, nameof (x)));
scope.Variables.Add (new VariableDebugInformation (y.index, nameof (y)));
scope.Variables.Add (new VariableDebugInformation (z.index, nameof (z)));
scope.Variables.Add (new VariableDebugInformation (z2, nameof (z2)));
body.Variables.Remove (y);
Assert.AreEqual (3, scope.Variables.Count);
Assert.AreEqual (x.Index, scope.Variables [0].Index);
Assert.AreEqual (nameof (x), scope.Variables [0].Name);
Assert.AreEqual (z.Index, scope.Variables [1].Index);
Assert.AreEqual (nameof (z), scope.Variables [1].Name);
Assert.AreEqual (z2.Index, scope.Variables [2].Index);
Assert.AreEqual (nameof (z2), scope.Variables [2].Name);
}
[Test]
public void InsertVariableIndex ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
var z = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (z);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (-1, y.Index);
Assert.AreEqual (1, z.Index);
body.Variables.Insert (1, y);
Assert.AreEqual (0, x.Index);
Assert.AreEqual (1, y.Index);
Assert.AreEqual (2, z.Index);
}
[Test]
public void InsertVariableWithDebugInfo ()
{
var object_ref = new TypeReference ("System", "Object", null, null, false);
var method = new MethodDefinition ("foo", MethodAttributes.Static, object_ref);
var body = new MethodBody (method);
var il = body.GetILProcessor ();
il.Emit (OpCodes.Ret);
var x = new VariableDefinition (object_ref);
var y = new VariableDefinition (object_ref);
var z = new VariableDefinition (object_ref);
var z2 = new VariableDefinition (object_ref);
body.Variables.Add (x);
body.Variables.Add (z);
body.Variables.Add (z2);
var scope = new ScopeDebugInformation (body.Instructions [0], body.Instructions [0]);
method.DebugInformation = new MethodDebugInformation (method) {
Scope = scope
};
scope.Variables.Add (new VariableDebugInformation (x.index, nameof (x)));
scope.Variables.Add (new VariableDebugInformation (z.index, nameof (z)));
scope.Variables.Add (new VariableDebugInformation (z2, nameof (z2)));
body.Variables.Insert (1, y);
// Adding local variable doesn't add debug info for it (since there's no way to deduce the name of the variable)
Assert.AreEqual (3, scope.Variables.Count);
Assert.AreEqual (x.Index, scope.Variables [0].Index);
Assert.AreEqual (nameof (x), scope.Variables [0].Name);
Assert.AreEqual (z.Index, scope.Variables [1].Index);
Assert.AreEqual (nameof (z), scope.Variables [1].Name);
Assert.AreEqual (z2.Index, scope.Variables [2].Index);
Assert.AreEqual (nameof (z2), scope.Variables [2].Name);
}
}
}
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