private static IList <SyntaxNode> CreateGetHashCodeMethodStatements(
ISyntaxFactoryService factory,
Compilation compilation,
INamedTypeSymbol containingType,
IList <ISymbol> members,
CancellationToken cancellationToken)
{
const string HashCodeName = "hashCode";
// -1521134295
var permuteValue = factory.CreateNegateExpression(
factory.CreateConstantExpression(1521134295));
var statements = new List <SyntaxNode>();
var hashCodeNameExpression = factory.CreateIdentifierName(HashCodeName);
var firstHashValue = ComputeHashValue(factory, compilation, members[0]);
if (members.Count == 1)
{
#if false
return(this.S1.GetHashCode());
#endif
statements.Add(factory.CreateReturnStatement(firstHashValue));
}
else
{
#if false
var hashCode = this.S1.GetHashCode();
#endif
statements.Add(factory.CreateLocalDeclarationStatement(
factory.CreateVariableDeclarator(HashCodeName, firstHashValue)));
for (var i = 1; i < members.Count; i++)
{
#if false
hashCode = hashCode * 0xA5555529 + value
#endif
statements.Add(factory.CreateExpressionStatement(
factory.CreateAssignExpression(hashCodeNameExpression,
factory.CreateAddExpression(
factory.CreateMultiplyExpression(hashCodeNameExpression, permuteValue),
ComputeHashValue(factory, compilation, members[i])))));
}
#if false
return(hashCode);
#endif
statements.Add(factory.CreateReturnStatement(hashCodeNameExpression));
}
return(statements);
}
private static IList<SyntaxNode> CreateGetHashCodeMethodStatements(
ISyntaxFactoryService factory,
Compilation compilation,
INamedTypeSymbol containingType,
IList<ISymbol> members,
CancellationToken cancellationToken)
{
const string HashCodeName = "hashCode";
// -1521134295
var permuteValue = factory.CreateNegateExpression(
factory.CreateConstantExpression(1521134295));
var statements = new List<SyntaxNode>();
var hashCodeNameExpression = factory.CreateIdentifierName(HashCodeName);
var firstHashValue = ComputeHashValue(factory, compilation, members[0]);
if (members.Count == 1)
{
#if false
return this.S1.GetHashCode();
#endif
statements.Add(factory.CreateReturnStatement(firstHashValue));
}
else
{
#if false
var hashCode = this.S1.GetHashCode();
#endif
statements.Add(factory.CreateLocalDeclarationStatement(
factory.CreateVariableDeclarator(HashCodeName, firstHashValue)));
for (var i = 1; i < members.Count; i++)
{
#if false
hashCode = hashCode * 0xA5555529 + value
#endif
statements.Add(factory.CreateExpressionStatement(
factory.CreateAssignExpression(hashCodeNameExpression,
factory.CreateAddExpression(
factory.CreateMultiplyExpression(hashCodeNameExpression, permuteValue),
ComputeHashValue(factory, compilation, members[i])))));
}
#if false
return hashCode;
#endif
statements.Add(factory.CreateReturnStatement(hashCodeNameExpression));
}
return statements;
}