private bool AddMethodToCache(SmallType pType, MethodSyntax pMethod, out MethodDefinition pDefinition)
{
//Check for duplicate method definitions
Compiler.FindResult found;
if (pMethod.SyntaxType == SyntaxType.Method)
{
found = _unit.MethodExists(pType, pMethod);
}
else if (pMethod.SyntaxType == SyntaxType.CastDefinition)
{
found = _unit.CastExists(pType, pMethod.Type, out MethodDefinition pDef);
}
else
{
throw new InvalidOperationException("Unknown method type " + pMethod.SyntaxType.ToString());
}
if (found != Compiler.FindResult.NotFound)
{
if (pMethod.SyntaxType == SyntaxType.Method)
{
CompilerErrors.MethodDuplicate(pMethod, pMethod.Span);
}
else if (pMethod.SyntaxType == SyntaxType.CastDefinition)
{
CompilerErrors.CastDuplicate(pMethod.Parameters[0].Type, pMethod.Type, pMethod.Span);
}
pDefinition = default;
return(false);
}
else
{
//Create the tuple type if we are returning more than one value from a method
//This will cache it in our SmallTypeCache so it can be found later
if (pMethod.ReturnValues.Count > 1)
{
SmallTypeCache.GetOrCreateTuple(SyntaxHelper.SelectNodeTypes(pMethod.ReturnValues));
}
//Set method and return types
foreach (var p in pMethod.Parameters)
{
_unit.FromString(p.TypeNode, out SmallType t);
p.TypeNode.SetType(t);
}
foreach (var r in pMethod.ReturnValues)
{
_unit.FromString(r, out SmallType t);
r.SetType(t);
}
//Add method
pDefinition = _unit.AddMethod(pType, pMethod);
return(true);
}
}