public override void VisitInvocationExpression(InvocationExpressionSyntax node)
{
IEnumerable <IdentifierNameSyntax> objectAndMethod = node.Expression.DescendantNodes()
.OfType <IdentifierNameSyntax>()
.TakeLast(2);
if (objectAndMethod.Count() == 2)
{
// Assumption: for this analyser, assuming that variables are declared with a type (not var/base class/interface)
IdentifierNameSyntax classIdentifier = objectAndMethod.First();
SyntaxNode declaration = IdentifierDeclarationFinder.Find(classIdentifier);
string className = declaration != null
? declaration.ChildNodes().OfType <VariableDeclarationSyntax>().FirstOrDefault()?.Type.ToString()
// no declaration was found, assume static method
: classIdentifier.Identifier.Text;
MethodCalls.Add(new MethodCallHolder(className, node));
}
else
{
string className = node.Ancestors()
.OfType <ClassDeclarationSyntax>()
.FirstOrDefault()?
.Identifier
.Text;
MethodCalls.Add(new MethodCallHolder(className, node));
}
base.VisitInvocationExpression(node);
}
public void FindsMethodDeclarationInClass()
{
string code = @"
using System;
public class TestClass
{
public void TestMethod()
{
var testInt2 = GetTestInt();
}
private int GetTestInt()
{
return 0;
}
}
";
CompilationUnitSyntax root = CSharpSyntaxTree.ParseText(code).GetCompilationUnitRoot();
IdentifierNameSyntax variableNode = root.DescendantNodes()
.OfType <IdentifierNameSyntax>()
.Where(n => n.Identifier.Text == "GetTestInt")
.First();
SyntaxNode declaration = IdentifierDeclarationFinder.Find(variableNode);
Assert.NotNull(declaration);
Assert.StartsWith("private int GetTestInt()", declaration.ToString());
}
public void FindsDeclarationInMethodParameter()
{
string code = @"
using System;
public class TestClass
{
public void testMethod(int testInt)
{
var testInt2 = testInt;
}
}
";
CompilationUnitSyntax root = CSharpSyntaxTree.ParseText(code).GetCompilationUnitRoot();
IdentifierNameSyntax variableNode = root.DescendantNodes()
.OfType <IdentifierNameSyntax>()
.Where(n => n.Identifier.Text == "testInt")
.Last();
SyntaxNode declaration = IdentifierDeclarationFinder.Find(variableNode);
Assert.NotNull(declaration);
Assert.Equal("int testInt", declaration.ToString());
}
public static Type GetNodeDataType(SyntaxNode node)
{
IdentifierNameSyntax castedNode = (IdentifierNameSyntax)node;
SyntaxNode declarationNode = IdentifierDeclarationFinder.Find(castedNode);
// IdentifierDeclarationFinder will throw exception if it can't find the declaration,
// so don't need to check and throw here
return(TypeResolver.GetNodeDataType(declarationNode));
}
