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//
// Mono.ILASM.PeapiTypeRef
//
// Author(s):
// Jackson Harper (Jackson@LatitudeGeo.com)
//
// (C) 2003 Jackson Harper, All rights reserved
//
using System;
using System.Collections;
namespace Mono.ILASM {
public class Pair {
private PEAPI.Type type;
private string sig;
public Pair (PEAPI.Type type, string sig)
{
this.type = type;
this.sig = sig;
}
public override int GetHashCode ()
{
return type.GetHashCode () ^ sig.GetHashCode ();
}
public override bool Equals (Object o)
{
Pair p = o as Pair;
if (p == null)
return false;
return (p.type == this.type && p.sig == this.sig);
}
}
public class PeapiTypeRef {
private PEAPI.Type peapi_type;
private bool is_pinned;
private bool is_array;
private bool is_ref;
private bool use_type_spec;
private static Hashtable type_table = new Hashtable ();
public PeapiTypeRef (PEAPI.Type peapi_type)
{
this.peapi_type = peapi_type;
is_pinned = false;
is_array = false;
is_ref = false;
use_type_spec = false;
}
public bool IsPinned {
get { return is_pinned; }
}
public bool IsArray {
get { return is_array; }
}
public bool IsRef {
get { return is_ref; }
}
public bool UseTypeSpec {
get { return use_type_spec; }
}
public PEAPI.Type PeapiType {
get { return peapi_type; }
}
public void MakeArray ()
{
PEAPI.Type type;
use_type_spec = true;
is_array = true;
Pair p = new Pair (peapi_type, "[]");
type = type_table [p] as PEAPI.Type;
if (type == null) {
type = new PEAPI.ZeroBasedArray (peapi_type);
type_table [p] = type;
}
peapi_type = type;
}
public void MakeBoundArray (ArrayList bound_list)
{
use_type_spec = true;
is_array = true;
int dimen = bound_list.Count;
int[] lower_array = new int[dimen];
int[] size_array = new int[dimen];
int [] lobounds = null;
int [] sizes = null;
int num_lower, num_sizes;
string sigmod = "";
PEAPI.Type type;
Pair p;
sigmod += "[";
for (int i=0; i<bound_list.Count; i++) {
DictionaryEntry e = (DictionaryEntry) bound_list [i];
if (e.Key != TypeRef.Ellipsis)
sigmod += e.Key;
sigmod += "...";
if (e.Value != TypeRef.Ellipsis)
sigmod += e.Value;
if (i + 1 < bound_list.Count)
sigmod += ", ";
}
sigmod += "]";
p = new Pair (peapi_type, sigmod);
type = type_table [p] as PEAPI.Type;
if (type != null) {
peapi_type = type;
return;
}
num_sizes = num_lower = 0;
// TODO: There should probably be an error reported if
// something like [3...,3...5] is done
for (int i=0; i<dimen; i++) {
if (bound_list [i] == null)
continue;
DictionaryEntry bound = (DictionaryEntry) bound_list [i];
if (bound.Key != TypeRef.Ellipsis) {
/* Lower bound specified */
lower_array [i] = (int) bound.Key;
num_lower = i + 1;
}
if (bound.Value != TypeRef.Ellipsis) {
size_array [i] = (int) bound.Value;
if (bound.Key != TypeRef.Ellipsis)
/* .Value is Upper bound eg [1...5] */
size_array [i] -= lower_array [i] - 1;
num_sizes = i + 1;
}
}
if (num_lower > 0) {
lobounds = new int [num_lower];
Array.Copy (lower_array, lobounds, num_lower);
}
if (num_sizes > 0) {
sizes = new int [num_sizes];
Array.Copy (size_array, sizes, num_sizes);
}
peapi_type = new PEAPI.BoundArray (peapi_type,
(uint) dimen, lobounds, sizes);
type_table [p] = peapi_type;
}
public void MakeManagedPointer ()
{
PEAPI.Type type;
use_type_spec = true;
is_ref = true;
Pair p = new Pair (peapi_type, "&");
type = type_table [p] as PEAPI.Type;
if (type == null) {
type = new PEAPI.ManagedPointer (peapi_type);
type_table [p] = type;
}
peapi_type = type;
}
public void MakeUnmanagedPointer ()
{
PEAPI.Type type;
use_type_spec = true;
Pair p = new Pair (peapi_type, "*");
type = type_table [p] as PEAPI.Type;
if (type == null) {
type = new PEAPI.UnmanagedPointer (peapi_type);
type_table [p] = type;
}
peapi_type = type;
}
public void MakeCustomModified (CodeGen code_gen, PEAPI.CustomModifier modifier,
BaseClassRef klass)
{
PEAPI.Type type;
use_type_spec = true;
Pair p = new Pair (peapi_type, modifier.ToString ());
type = type_table [p] as PEAPI.Type;
if (type == null) {
klass.Resolve (code_gen);
type = new PEAPI.CustomModifiedType (peapi_type,
modifier, klass.PeapiClass);
type_table [p] = type;
}
peapi_type = type;
}
public void MakePinned ()
{
use_type_spec = true;
is_pinned = true;
}
public void Resolve (CodeGen code_gen)
{
}
}
}
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