private IfsType InferValueDefnType(ITree node, fsScope scope)
{
derFunction = null;
IfsType bodyType = Analyse(GetChildByType(node, fsharp_ssParser.BODY), scope);
ITree annotatedReturningTypeNode = GetChildByType(node, fsharp_ssParser.TYPE);
if (annotatedReturningTypeNode != null && annotatedReturningTypeNode.ChildCount > 0)
{
IfsType annotatedReturningType = new fsType(annotatedReturningTypeNode.GetChild(0).Text, null);
UnifyWrapper(ref bodyType, ref annotatedReturningType, scope);
}
if (bodyType.Name == "function")
{
node.AddChild(new fsTreeNode(derFunction));
varDerFuncTable.Add(GetChildByType(node, fsharp_ssParser.NAME).GetChild(0).Text, derFunction);
}
return bodyType;
}
private IfsType InferFunctionDefnType(ITree node, fsScope scope)
{
fsScope innerScope = new fsScope(scope);
List<IfsType> functionTypes = new List<IfsType>();
string funcName = GetChildByType(node, fsharp_ssParser.NAME).GetChild(0).Text;
ITree args = GetChildByType(node, fsharp_ssParser.ARGS);
List<string> argsNames = new List<string>();
for (int i = 0; i < args.ChildCount; i++)
{
ITree arg = args.GetChild(i);
IfsType argType;
if (arg.ChildCount > 0)
{
ITree annotatedArgTypeNode = arg.GetChild(0);
argType = new fsType(annotatedArgTypeNode.Text, null);
}
else
{
argType = new fsTypeVar();
}
argsNames.Add(arg.Text);
innerScope.AddVar(arg.Text, argType);
innerScope.SetVarInfo(arg.Text, ScopePositionType.functionArg);
}
fsDerFuncInfo funcInfo = new fsDerFuncInfo(funcName, argsNames, 0, 0,
enteredFunctionsNames[enteredFunctionsNames.Count - 1]);
if (funcName != "main")
{
enteredFunctionsNames.Add(funcName);
}
functionsInfos.Add(funcName, funcInfo);
node.AddChild(new fsTreeNode(funcInfo));
if (GetChildByType(node, fsharp_ssParser.REC) != null)
{
innerScope.AddFunction(funcName, fsType.GetIdentityType(innerScope, argsNames));
innerScope.SetVarInfo(funcName, ScopePositionType.functionClass);
}
IfsType bodyType = Analyse(GetChildByType(node, fsharp_ssParser.BODY), innerScope);
ITree annotatedReturningTypeNode = GetChildByType(node, fsharp_ssParser.TYPE);
if (annotatedReturningTypeNode != null && annotatedReturningTypeNode.ChildCount > 0)
{
IfsType annotatedReturningType = new fsType(annotatedReturningTypeNode.GetChild(0).Text, null);
UnifyWrapper(ref bodyType, ref annotatedReturningType, innerScope);
}
for (int i = 0; i < argsNames.Count; i++)
{
functionTypes.Add(innerScope.GetVarType(argsNames[i]));
}
functionTypes.Add(bodyType);
fsType functionType = fsType.GetFunctionType(functionTypes);
enteredFunctionsNames.RemoveAt(enteredFunctionsNames.Count - 1);
return functionType;
}