static void ParseTypeContinueBeforeName(string[] tokens, ref int index, out TypeDecl decl, out Action <TypeDecl> continuation, out string name)
{
decl = null;
continuation = null;
name = null;
while (true)
{
Decoration?decoration = null;
if (Parser.Token(tokens, ref index, "const"))
{
decoration = Decoration.Const;
}
else if (Parser.Token(tokens, ref index, "volatile"))
{
decoration = Decoration.Volatile;
}
else if (Parser.Token(tokens, ref index, "*"))
{
decoration = Decoration.Pointer;
}
else if (Parser.Token(tokens, ref index, "&"))
{
decoration = Decoration.LeftRef;
}
else if (Parser.Token(tokens, ref index, "&&"))
{
decoration = Decoration.RightRef;
}
else if (Parser.Token(tokens, ref index, "."))
{
Parser.EnsureToken(tokens, ref index, ".");
Parser.EnsureToken(tokens, ref index, ".");
var vaDecl = new VariadicArgumentTypeDecl
{
};
if (decl == null)
{
continuation = x => vaDecl.Element = x;
}
else
{
vaDecl.Element = decl;
}
decl = vaDecl;
}
else
{
TypeDecl classType = null;
if (ParseMiniType(tokens, ref index, out classType))
{
if (Parser.Token(tokens, ref index, ":"))
{
Parser.EnsureToken(tokens, ref index, ":");
var classMemberTypeDecl = new ClassMemberTypeDecl
{
ClassType = classType,
};
if (decl == null)
{
continuation = x => classMemberTypeDecl.Element = x;
}
else
{
classMemberTypeDecl.Element = decl;
}
decl = classMemberTypeDecl;
}
else
{
var subType = classType as SubTypeDecl;
var refType = classType as RefTypeDecl;
if (subType != null)
{
name = subType.Name;
var classMemberTypeDecl = new ClassMemberTypeDecl
{
ClassType = subType.Parent,
};
if (decl == null)
{
continuation = x => classMemberTypeDecl.Element = x;
}
else
{
classMemberTypeDecl.Element = decl;
}
decl = classMemberTypeDecl;
}
else if (refType != null)
{
name = refType.Name;
}
else
{
throw new ArgumentException("Failed to parse.");
}
if (name == "operator")
{
if (tokens[index + 1] == "(")
{
name += " " + tokens[index];
index += 1;
}
else if (tokens[index + 2] == "(")
{
name += " " + tokens[index] + tokens[index + 1];
index += 2;
}
else
{
throw new ArgumentException("Failed to parse.");
}
}
break;
}
}
else
{
break;
}
}
if (decoration != null)
{
var decorateDecl = new DecorateTypeDecl
{
Decoration = decoration.Value,
};
if (decl == null)
{
continuation = x => decorateDecl.Element = x;
}
else
{
decorateDecl.Element = decl;
}
decl = decorateDecl;
}
}
}
static bool ParseMiniType(string[] tokens, ref int index, out TypeDecl decl)
{
decl = null;
if (Parser.Token(tokens, ref index, "const"))
{
decl = new DecorateTypeDecl
{
Decoration = Decoration.Const,
Element = EnsureMiniType(tokens, ref index),
};
return(true);
}
else if (Parser.Token(tokens, ref index, "volatile"))
{
decl = new DecorateTypeDecl
{
Decoration = Decoration.Volatile,
Element = EnsureMiniType(tokens, ref index),
};
return(true);
}
else if (Parser.Token(tokens, ref index, "signed"))
{
decl = new DecorateTypeDecl
{
Decoration = Decoration.Signed,
Element = EnsureMiniType(tokens, ref index),
};
return(true);
}
else if (Parser.Token(tokens, ref index, "unsigned"))
{
decl = new DecorateTypeDecl
{
Decoration = Decoration.Unsigned,
Element = EnsureMiniType(tokens, ref index),
};
return(true);
}
else if (Parser.Token(tokens, ref index, "decltype"))
{
Parser.EnsureToken(tokens, ref index, "(");
int oldIndex = index;
Parser.SkipUntil(tokens, ref index, ")");
decl = new DeclTypeDecl
{
Expression = tokens
.Skip(oldIndex)
.Take(index - 1 - oldIndex)
.Aggregate((a, b) => a + " " + b),
};
return(true);
}
else if (Parser.Token(tokens, ref index, "false") || Parser.Token(tokens, ref index, "true"))
{
decl = new ConstantTypeDecl
{
Value = tokens[index - 1],
};
return(true);
}
else
{
if (index < tokens.Length)
{
int value = 0;
if (int.TryParse(tokens[index], out value))
{
index++;
decl = new ConstantTypeDecl
{
Value = tokens[index - 1],
};
return(true);
}
}
string token = null;
Parser.Token(tokens, ref index, "typename");
if (Parser.Id(tokens, ref index, out token))
{
decl = new RefTypeDecl
{
Name = token,
};
if (token != "operator")
{
while (true)
{
if (Parser.Token(tokens, ref index, "<"))
{
var genericDecl = new GenericTypeDecl
{
Element = decl,
TypeArguments = new List <TypeDecl>(),
};
decl = genericDecl;
if (!Parser.Token(tokens, ref index, ">"))
{
while (true)
{
genericDecl.TypeArguments.Add(EnsureTypeWithoutName(tokens, ref index));
if (Parser.Token(tokens, ref index, ">"))
{
break;
}
else
{
Parser.EnsureToken(tokens, ref index, ",");
}
}
}
}
else if (Parser.Token(tokens, ref index, ":"))
{
Parser.EnsureToken(tokens, ref index, ":");
Parser.Token(tokens, ref index, "template");
if (Parser.Id(tokens, ref index, out token))
{
decl = new SubTypeDecl
{
Parent = decl,
Name = token,
};
}
else
{
index -= 2;
break;
}
}
else
{
break;
}
}
}
return(true);
}
else
{
return(false);
}
}
}
