internal static void DefineFunction(CType signature, string name, CStorageClass cStorageClass)
{
//cStorageClass (static, extern, or none)
//ignore for now
if (currentFunctionScope != null || BlockScopes.Count > 0)
{
throw new SemanticException("can only define function at file scope");
}
else
{
if (fileScope.ContainsKey(name))
{
if (fileScope[name].functionBody == null && fileScope[name].type.Equals(signature))
{
fileScope[name].functionBody = CStatment.PopStatement();
}
else
{
throw new SemanticException("canot redifein function");
}
}
else
{
fileScope[name] = new CIdentifier(signature, name, CStatment.PopStatement());
}
}
}
//todo handle scope
public static CIdentifier CreateIdentifierInCurrentScope(string name, CType cType, CStorageClass StorageClass = CStorageClass.Ignore, CConstType ConstType = CConstType.Ignore)
{
if (CType.InStructDefinition)
{
//member variable
CIdentifier ident = new CIdentifier(cType, name, true, false, 0, CType.MemberOffset(cType.Size));
CType.GlobalStructMembers.Add(ident);
return(ident);
}
else if (BlockScopes.Count > 0)
{
if (BlockScopes[BlockScopes.Count - 1].ContainsKey(name))
{
throw new SemanticException("idenitier " + name + " is already defined in this scope");
}
//local var
CIdentifier ident = new CIdentifier(cType, name, false, true, CStatment.PushLocal(cType.Size), 0);
BlockScopes[BlockScopes.Count - 1][name] = ident;
return(ident);
}
else
{
if (fileScope.ContainsKey(name))
{
throw new SemanticException("idenitier " + name + " is already defined in this scope");
}
//global var
CIdentifier ident = new CIdentifier(cType, name, false, false, 0, 0);
fileScope[name] = ident;
return(ident);
}
}