// ----------------------------------------------------------------------------
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ----------------------------------------------------------------------------

using System;
using System.IO;
using System.Collections;

public class Pair
{
    public Pair(object _first, object _second)
    {
        first = _first;
        second = _second;
    }

    public object First { get { return first; } }
    public object Second { get { return second; } }

    private object first;
    private object second;
}

public class sort {
    public static object visit(object ast, TextWriter w, string[] lists) {
        (new sort()).compilation((compilation)ast, null);
        return ast;
    }
    class compare : IComparer
    {
        int IComparer.Compare(object x, object y) {
            Pair u = (Pair)x, v = (Pair)y;
            return ((string)u.First).CompareTo((string)v.First);
        }
    }
    declarationList Sort(ArrayList q) {
        q.Sort(new compare());
        declarationList decls = new declarationList();
        foreach (Pair x in q)
            decls.Add((declaration)x.Second);
        return decls;
    }
    void class_declaration(class_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
        list = new ArrayList();
        foreach (declaration x in ast.body)
            declaration(x, list);
        ast.body = Sort(list);
    }
    void compilation(compilation ast, ArrayList list) {
        list = new ArrayList();
        foreach (compilation_unit x in ast.inputs)
            compilation_unit(x, list);
    }
    void compilation_unit(compilation_unit ast, ArrayList list) {
        foreach (declaration x in ast.declarations)
            declaration(x, list);
        ast.declarations = Sort(list);
    }
    void constant_declaration(constant_declaration ast, ArrayList list) {
        foreach (declarator x in ast.decls)
            list.Add(new Pair(x.id.str, ast));
    }
    void constructor_declaration(constructor_declaration ast, ArrayList list) {
        list.Add(new Pair(((constructor_declarator)ast.decl).id.str, ast));
    }
    void declaration(declaration ast, ArrayList list) {
        if (ast is namespace_declaration) {
            namespace_declaration((namespace_declaration)ast, list); return;
        }
        if (ast is constant_declaration) {
            constant_declaration((constant_declaration)ast, list); return;
        }
        if (ast is field_declaration) {
            field_declaration((field_declaration)ast, list); return;
        }
        if (ast is method_declaration) {
            method_declaration((method_declaration)ast, list); return;
        }
        if (ast is property_declaration) {
            property_declaration((property_declaration)ast, list); return;
        }
        if (ast is event_declaration1) {
            event_declaration1((event_declaration1)ast, list); return;
        }
        if (ast is event_declaration2) {
            event_declaration2((event_declaration2)ast, list); return;
        }
        if (ast is indexer_declaration) {
            indexer_declaration((indexer_declaration)ast, list); return;
        }
        if (ast is operator_declaration) {
            operator_declaration((operator_declaration)ast, list); return;
        }
        if (ast is constructor_declaration) {
            constructor_declaration((constructor_declaration)ast, list); return;
        }
        if (ast is destructor_declaration) {
            destructor_declaration((destructor_declaration)ast, list); return;
        }
        if (ast is struct_declaration) {
            struct_declaration((struct_declaration)ast, list); return;
        }
        if (ast is interface_declaration) {
            interface_declaration((interface_declaration)ast, list); return;
        }
        if (ast is interface_method_declaration) {
            interface_method_declaration((interface_method_declaration)ast, list); return;
        }
        if (ast is interface_property_declaration) {
            interface_property_declaration((interface_property_declaration)ast, list); return;
        }
        if (ast is interface_event_declaration) {
            interface_event_declaration((interface_event_declaration)ast, list); return;
        }
        if (ast is interface_indexer_declaration) {
            interface_indexer_declaration((interface_indexer_declaration)ast, list); return;
        }
        if (ast is enum_declaration) {
            enum_declaration((enum_declaration)ast, list); return;
        }
        if (ast is class_declaration) {
            class_declaration((class_declaration)ast, list); return;
        }
        if (ast is delegate_declaration) {
            delegate_declaration((delegate_declaration)ast, list); return;
        }
        throw new ArgumentException();
    }
    void delegate_declaration(delegate_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    void destructor_declaration(destructor_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    void enum_declaration(enum_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    void event_declaration1(event_declaration1 ast, ArrayList list) {
        foreach (event_declarator x in ast.decls)
            list.Add(new Pair(x.id.str, ast));
    }
    void event_declaration2(event_declaration2 ast, ArrayList list) {
        list.Add(new Pair(member_name(ast.name), ast));
    }
    void field_declaration(field_declaration ast, ArrayList list) {
        foreach (field_declarator x in ast.decls)
            list.Add(new Pair(x.id.str, ast));
    }
    void indexer_declaration(indexer_declaration ast, ArrayList list) {
        list.Add(new Pair("this", ast));
    }
    void interface_declaration(interface_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
        list = new ArrayList();
        foreach (declaration x in ast.body)
            declaration(x, list);
        ast.body = Sort(list);
    }
    void interface_event_declaration(interface_event_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    void interface_indexer_declaration(interface_indexer_declaration ast, ArrayList list) {
        list.Add(new Pair("this", ast));
    }
    void interface_method_declaration(interface_method_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    void interface_property_declaration(interface_property_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
    }
    string member_name(member_name ast) {
        if (ast.ty != null)
            return type(ast.ty) + "." + ast.id.str;
        else
            return ast.id.str;
    }
    void method_declaration(method_declaration ast, ArrayList list) {
        list.Add(new Pair(member_name(ast.name), ast));
    }
    void namespace_declaration(namespace_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.ToString(), ast));
        list = new ArrayList();
        foreach (declaration x in ast.nb.declarations)
            declaration(x, list);
        ast.nb.declarations = Sort(list);
    }
    void operator_declaration(operator_declaration ast, ArrayList list) {
        InputElement op;
             if (ast.op is unary_declarator)   op = ((unary_declarator)ast.op).op;
        else if (ast.op is binary_declarator)  op = ((binary_declarator)ast.op).op;
        else if (ast.op is implicit_declarator) op = ((implicit_declarator)ast.op).id1;
        else if (ast.op is explicit_declarator) op = ((explicit_declarator)ast.op).id1;
        else
            throw new ArgumentException();
        list.Add(new Pair(op.str, ast));
    }
    void property_declaration(property_declaration ast, ArrayList list) {
        list.Add(new Pair(member_name(ast.name), ast));
    }
    void struct_declaration(struct_declaration ast, ArrayList list) {
        list.Add(new Pair(ast.id.str, ast));
        list = new ArrayList();
        foreach (declaration x in ast.body)
            declaration(x, list);
        ast.body = Sort(list);
    }
    string type(type ast) {
        if (ast is name_type)
            return ((name_type)ast).name.ToString();
        throw new ArgumentException();
    }
}
