private static ILFunction FindFunction(string name, VAList vaList)
{
foreach (var KV in f_functionFindMap)
{
if (KV.Key.Header.FunctionName == name)
{
if (KV.Key.Header.ParametersCount == vaList.Count)
{
int i = 0;
bool ok = true;
foreach (var p in KV.Key.Header.Parameters)
{
if (p.Type.Equals(vaList[i].ResultType) == false)
{
ok = false;
break;
}
i++;
}
if (ok)
return KV.Value;
}
}
}
throw new InvalidOperationException("Bad ILEmit situation - can't find function =(");
}
public static bool ValidateFunctionCall(string name, VAList args, SymbolTableLight table, LexLocation location, ref VariableType returnType)
{
bool ok = true;
List<FunctionHeader> callCandidates = new List<FunctionHeader>();
foreach (FunctionDefinition functionDef in Program.Functions)
{
if (functionDef.Header.FunctionName == name && functionDef.Header.ParametersCount == args.Count)
{
callCandidates.Add(functionDef.Header);
}
}
if (callCandidates.Count == 0)
{
CompilerServices.AddError(
location,
"Can't find function prototype for specified function name and number of parameters"
);
return false;
}
foreach (Expression ex in args)
{
bool valid = ex.Validate(table);
ok = ok && valid;
}
if (ok)
{
foreach (FunctionHeader header in callCandidates)
{
bool match = true;
int i = 0;
foreach (FunctionParameter parameter in header.Parameters)
{
if (!IsAssignable(parameter.Type, args[i].ResultType))
match = false;
i++;
}
if (match)
{
returnType = header.ReturnType;
return true;
}
}
CompilerServices.AddError(
location,
"Can't find function prototype for specified parameters"
);
return false;
}
return ok;
}
