Remove uses of ToString() about roslyn-analyzers HOT 10 CLOSED

string methodName = invocationExpression.ArgumentList.Arguments[0].ToString();

var methodIdentifier = invocationExpression.ArgumentList.Arguments[0].Expression as IdentifierNameSyntax;
string methodName = methodIdentifier.Identifier.Text;

var expressionStart = expression.Expression as MemberAccessExpressionSyntax;
if (expressionStart == null || expressionStart.Name == null ||
                    expressionStart.Name.ToString() != "RegisterSyntaxNodeAction")

var expressionStart = expression.Expression as MemberAccessExpressionSyntax;
var expressionIdentifier = expressionStart.Name as IdentifierNameSyntax;
if (expressionIdentifier == null || expressionIdentifier.Identifier.Text == null ||
                    expressionIdentifier.Identifier.Text != "RegisterSyntaxNodeAction")

currentRuleId = currentArg.Expression.ToString();

var currentRuleIdentifier = currentArg.Expression as IdentifierNameSyntax;
currentRuleId = currentRuleIdentifier.Identifier.Text;

var newIdIdentifier = ruleIdSyntax.Identifier.ToString();

var newIdIdentifier = ruleIdSyntax.Identifier.Text;

if (fieldDeclaration.Declaration.Type != null && fieldDeclaration.Declaration.Type.ToString() == "DiagnosticDescriptor")

var fieldType = fieldDeclaration.Declaration.Type as IdentifierNameSyntax;
if (fieldType != null && fieldType.Identifier.Text == "DiagnosticDescriptor")

var fieldType = fieldSyntax.Declaration.Type;
if (fieldType != null && fieldType.ToString() == "DiagnosticDescriptor")

var fieldType = fieldSyntax.Declaration.Type as IdentifierNameSyntax;
if (fieldType != null && fieldType.Identifier.Text == "DiagnosticDescriptor")

if (rule != null && rule.Declaration.Type.ToString() == "DiagnosticDescriptor")

var ruleType = rule.Declaration.Type as IdentifierNameSyntax;
if (rule != null && ruleType != null && ruleType.Identifier.Text == "DiagnosticDescriptor")

var parameterType = parameters.First().Type;
if (parameterType != null && parameterType.ToString() == "SyntaxNodeAnalysisContext")

var parameterType = parameters.First().Type as IdentifierNameSyntax;
if (parameterType != null && parameterType.Identifier.Text == "SyntaxNodeAnalysisContext")

 if (returnSymbol.Type.ToString() != "System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.DiagnosticDescriptor>" && returnSymbol.Type.Kind.ToString() != "ErrorType")