// (C) 2001 Ximian, Inc (http://www.ximian.com)
//
-using System.Reflection.Emit;
-using System.Reflection;
using System;
+using System.IO;
using System.Text;
+using System.Reflection;
+using System.Collections;
+using System.Reflection.Emit;
+using System.Globalization;
namespace Mono.CSharp {
public interface ParameterData {
Type ParameterType (int pos);
int Count { get; }
+ bool HasParams { get; }
+ string ParameterName (int pos);
string ParameterDesc (int pos);
Parameter.Modifier ParameterModifier (int pos);
}
public class ReflectionParameters : ParameterData {
ParameterInfo [] pi;
- bool last_arg_is_params;
+ bool last_arg_is_params = false;
+ bool is_varargs = false;
- public ReflectionParameters (ParameterInfo [] pi)
+ public ReflectionParameters (MethodBase mb)
{
- object [] a;
+ object [] attrs;
+
+ ParameterInfo [] pi = mb.GetParameters ();
+ is_varargs = (mb.CallingConvention & CallingConventions.VarArgs) != 0;
this.pi = pi;
-
int count = pi.Length-1;
- if (count > 0) {
- a = pi [count-1].GetCustomAttributes (TypeManager.param_array_type, false);
-
- if (a != null)
- if (a.Length != 0)
- last_arg_is_params = true;
- }
+
+ if (count >= 0) {
+ attrs = pi [count].GetCustomAttributes (TypeManager.param_array_type, true);
+
+ if (attrs == null)
+ return;
+
+ if (attrs.Length == 0)
+ return;
+
+ last_arg_is_params = true;
+ }
}
public Type ParameterType (int pos)
{
- return pi [pos].ParameterType;
+ if (last_arg_is_params && pos >= pi.Length - 1)
+ return pi [pi.Length - 1].ParameterType;
+ else if (is_varargs && pos >= pi.Length)
+ return TypeManager.runtime_argument_handle_type;
+ else {
+ Type t = pi [pos].ParameterType;
+
+ return t;
+ }
+ }
+
+ public string ParameterName (int pos)
+ {
+ if (last_arg_is_params && pos >= pi.Length - 1)
+ return pi [pi.Length - 1].Name;
+ else if (is_varargs && pos >= pi.Length)
+ return "__arglist";
+ else
+ return pi [pos].Name;
}
public string ParameterDesc (int pos)
{
- StringBuilder sb = new StringBuilder ();
+ if (is_varargs && pos >= pi.Length)
+ return "";
- if (pi [pos].IsOut)
- sb.Append ("out ");
+ StringBuilder sb = new StringBuilder ();
if (pi [pos].IsIn)
sb.Append ("in ");
- if (pos == pi.Length - 1)
+ Type partype = ParameterType (pos);
+ if (partype.IsByRef){
+ partype = TypeManager.GetElementType (partype);
+ if (pi [pos].IsOut)
+ sb.Append ("out ");
+ else
+ sb.Append ("ref ");
+ }
+
+ if (pos >= pi.Length - 1 && last_arg_is_params)
sb.Append ("params ");
- sb.Append (TypeManager.CSharpName (ParameterType (pos)));
+ sb.Append (TypeManager.CSharpName (partype));
return sb.ToString ();
public Parameter.Modifier ParameterModifier (int pos)
{
- if (pi [pos].IsOut)
- return Parameter.Modifier.OUT;
-
- if (pos == pi.Length-1)
- if (last_arg_is_params)
- return Parameter.Modifier.PARAMS;
-
+ if (last_arg_is_params && pos >= pi.Length - 1)
+ return Parameter.Modifier.PARAMS;
+ else if (is_varargs && pos >= pi.Length)
+ return Parameter.Modifier.ARGLIST;
+
+ Type t = pi [pos].ParameterType;
+ if (t.IsByRef){
+ if ((pi [pos].Attributes & ParameterAttributes.Out) != 0)
+ return Parameter.Modifier.ISBYREF | Parameter.Modifier.OUT;
+ else
+ return Parameter.Modifier.ISBYREF | Parameter.Modifier.REF;
+ }
+
return Parameter.Modifier.NONE;
}
public int Count {
get {
- return pi.Length;
+ return is_varargs ? pi.Length + 1 : pi.Length;
+ }
+ }
+
+ public bool HasParams {
+ get {
+ return this.last_arg_is_params;
}
}
public class InternalParameters : ParameterData {
Type [] param_types;
+ bool has_varargs;
+ int count;
- Parameters parameters;
+ public readonly Parameters Parameters;
- public InternalParameters (TypeContainer tc, Parameters parameters)
+ public InternalParameters (Type [] param_types, Parameters parameters)
{
- this.param_types = parameters.GetParameterInfo (tc);
- this.parameters = parameters;
+ this.param_types = param_types;
+ this.Parameters = parameters;
+
+ has_varargs = parameters.HasArglist;
+
+ if (param_types == null)
+ count = 0;
+ else
+ count = param_types.Length;
}
public int Count {
get {
- if (param_types == null)
- return 0;
+ return has_varargs ? count + 1 : count;
+ }
+ }
- return param_types.Length;
+ public bool HasParams {
+ get {
+ return Parameters.ArrayParameter != null;
+ }
+ }
+
+ Parameter GetParameter (int pos)
+ {
+ Parameter [] fixed_pars = Parameters.FixedParameters;
+ if (fixed_pars != null){
+ int len = fixed_pars.Length;
+ if (pos < len)
+ return Parameters.FixedParameters [pos];
}
+
+ return Parameters.ArrayParameter;
}
public Type ParameterType (int pos)
{
+ if (has_varargs && pos >= count)
+ return TypeManager.runtime_argument_handle_type;
+
if (param_types == null)
return null;
- int len = parameters.FixedParameters.Length;
- Parameter p;
+ return GetParameter (pos).ExternalType ();
+ }
- if (pos == len)
- p = parameters.ArrayParameter;
- else if (pos < len)
- p = parameters.FixedParameters [pos];
- else {
- p = parameters.ArrayParameter;
- pos = len;
- }
- //
- // Return the internal type.
- //
- return p.ParameterType;
+ public string ParameterName (int pos)
+ {
+ if (has_varargs && pos >= count)
+ return "__arglist";
+
+ return GetParameter (pos).Name;
}
public string ParameterDesc (int pos)
{
- string tmp = null;
- Parameter p;
+ if (has_varargs && pos >= count)
+ return "__arglist";
- if (pos >= parameters.FixedParameters.Length)
- p = parameters.ArrayParameter;
- else
- p = parameters.FixedParameters [pos];
-
- if (p.ModFlags == Parameter.Modifier.REF)
+ string tmp = String.Empty;
+ Parameter p = GetParameter (pos);
+
+ //
+ // We need to and for REF/OUT, because if either is set the
+ // extra flag ISBYREF will be set as well
+ //
+ if ((p.ModFlags & Parameter.Modifier.REF) != 0)
tmp = "ref ";
- else if (p.ModFlags == Parameter.Modifier.OUT)
+ else if ((p.ModFlags & Parameter.Modifier.OUT) != 0)
tmp = "out ";
else if (p.ModFlags == Parameter.Modifier.PARAMS)
tmp = "params ";
public Parameter.Modifier ParameterModifier (int pos)
{
- if (pos >= parameters.FixedParameters.Length)
- return parameters.ArrayParameter.ModFlags;
- else
- return parameters.FixedParameters [pos].ModFlags;
+ if (has_varargs && pos >= count)
+ return Parameter.Modifier.ARGLIST;
+
+ Parameter.Modifier mod = GetParameter (pos).ModFlags;
+
+ if ((mod & (Parameter.Modifier.REF | Parameter.Modifier.OUT)) != 0)
+ mod |= Parameter.Modifier.ISBYREF;
+
+ return mod;
}
}
+
+ class PtrHashtable : Hashtable {
+ sealed class PtrComparer : IComparer {
+ private PtrComparer () {}
+
+ public static PtrComparer Instance = new PtrComparer ();
+
+ public int Compare (object x, object y)
+ {
+ if (x == y)
+ return 0;
+ else
+ return 1;
+ }
+ }
+
+ public PtrHashtable ()
+ {
+ comparer = PtrComparer.Instance;
+ }
+ }
+
+ /*
+ * Hashtable whose keys are character arrays with the same length
+ */
+ class CharArrayHashtable : Hashtable {
+ sealed class ArrComparer : IComparer {
+ private int len;
+
+ public ArrComparer (int len) {
+ this.len = len;
+ }
+
+ public int Compare (object x, object y)
+ {
+ char[] a = (char[])x;
+ char[] b = (char[])y;
+
+ for (int i = 0; i < len; ++i)
+ if (a [i] != b [i])
+ return 1;
+ return 0;
+ }
+ }
+
+ private int len;
+
+ protected override int GetHash (Object key)
+ {
+ char[] arr = (char[])key;
+ int h = 0;
+
+ for (int i = 0; i < len; ++i)
+ h = (h << 5) - h + arr [i];
+
+ return h;
+ }
+
+ public CharArrayHashtable (int len)
+ {
+ this.len = len;
+ comparer = new ArrComparer (len);
+ }
+ }
+
+ struct Pair {
+ public object First;
+ public object Second;
+
+ public Pair (object f, object s)
+ {
+ First = f;
+ Second = s;
+ }
+ }
+
+ /// <summary>
+ /// This is a wrapper around StreamReader which is seekable.
+ /// </summary>
+ public class SeekableStreamReader
+ {
+ public SeekableStreamReader (StreamReader reader)
+ {
+ this.reader = reader;
+ this.buffer = new char [DefaultCacheSize];
+
+ // Compute the preamble size
+
+ // Let the StreamWriter autodetect the encoder
+ reader.Peek ();
+
+ reader.BaseStream.Position = 0;
+ Encoding enc = reader.CurrentEncoding;
+ // First of all, get at least a char
+
+ byte[] auxb = new byte [50];
+ int num_bytes = 0;
+ int num_chars = 0;
+ int br = 0;
+ do {
+ br = reader.BaseStream.Read (auxb, num_bytes, auxb.Length - num_bytes);
+ num_bytes += br;
+ num_chars = enc.GetCharCount (auxb, 0, num_bytes);
+ }
+ while (num_chars == 0 && br > 0);
+
+ if (num_chars != 0)
+ {
+ // Now, check which bytes at the beginning have no effect in the
+ // char count
+
+ int p = 0;
+ while (enc.GetCharCount (auxb, p, num_bytes-p) >= num_chars)
+ p++;
+
+ preamble_size = p - 1;
+ reader.BaseStream.Position = 0;
+ reader.DiscardBufferedData ();
+
+ buffer_start = preamble_size;
+ }
+ }
+
+ public SeekableStreamReader (Stream stream, Encoding encoding, bool detect_encoding_from_bytemarks)
+ : this (new StreamReader (stream, encoding, detect_encoding_from_bytemarks))
+ { }
+
+ StreamReader reader;
+
+ private const int DefaultCacheSize = 1024;
+
+ char[] buffer;
+ int buffer_start; // in bytes
+ int buffer_size; // in bytes
+ int char_count; // count buffer[] valid characters
+ int pos; // index into buffer[]
+ int preamble_size;
+
+ /// <remarks>
+ /// The difference to the StreamReader's BaseStream.Position is that this one is reliable; ie. it
+ // always reports the correct position and if it's modified, it also takes care of the buffered data.
+ /// </remarks>
+ public int Position {
+ get {
+ return buffer_start + reader.CurrentEncoding.GetByteCount (buffer, 0, pos);
+ }
+
+ set {
+ // This one is easy: we're modifying the position within our current
+ // buffer.
+ if ((value >= buffer_start) && (value < buffer_start + buffer_size)) {
+ int byte_offset = value - buffer_start;
+
+ // pos is an index into a char
+ // buffer so it might be
+ // greater than the buffer
+ // length now, if the buffer
+ // contains multibyte chars
+ pos = byte_offset;
+
+ // encoded characters can take
+ // more than 1 byte length.
+ while ((pos > buffer.Length) ||
+ reader.CurrentEncoding.GetByteCount (buffer, 0, pos) > byte_offset) {
+ pos--;
+ }
+
+ return;
+ }
+
+ if (value == 0) // Skip preamble
+ value = preamble_size;
+
+ // Ok, now we need to seek.
+ reader.DiscardBufferedData ();
+ reader.BaseStream.Position = buffer_start = value;
+ char_count = buffer_size = pos = 0;
+ }
+ }
+
+ private bool ReadBuffer ()
+ {
+ pos = 0;
+ buffer_start += buffer_size;
+ char_count = reader.Read (buffer, 0, buffer.Length);
+ buffer_size = reader.CurrentEncoding.GetByteCount (buffer, 0, char_count);
+ return buffer_size > 0;
+ }
+
+ public int Peek ()
+ {
+ if ((pos >= char_count) && !ReadBuffer ())
+ return -1;
+
+ return buffer [pos];
+ }
+
+ public int Read ()
+ {
+ if ((pos >= char_count) && !ReadBuffer ())
+ return -1;
+
+ return buffer [pos++];
+ }
+ }
+
+ public class DoubleHash {
+ const int DEFAULT_INITIAL_BUCKETS = 100;
+
+ public DoubleHash () : this (DEFAULT_INITIAL_BUCKETS) {}
+
+ public DoubleHash (int size)
+ {
+ count = size;
+ buckets = new Entry [size];
+ }
+
+ int count;
+ Entry [] buckets;
+ int size = 0;
+
+ class Entry {
+ public object key1;
+ public object key2;
+ public int hash;
+ public object value;
+ public Entry next;
+
+ public Entry (object key1, object key2, int hash, object value, Entry next)
+ {
+ this.key1 = key1;
+ this.key2 = key2;
+ this.hash = hash;
+ this.next = next;
+ this.value = value;
+ }
+ }
+
+ public bool Lookup (object a, object b, out object res)
+ {
+ int h = (a.GetHashCode () ^ b.GetHashCode ()) & 0x7FFFFFFF;
+
+ for (Entry e = buckets [h % count]; e != null; e = e.next) {
+ if (e.hash == h && e.key1.Equals (a) && e.key2.Equals (b)) {
+ res = e.value;
+ return true;
+ }
+ }
+ res = null;
+ return false;
+ }
+
+ public void Insert (object a, object b, object value)
+ {
+ // Is it an existing one?
+
+ int h = (a.GetHashCode () ^ b.GetHashCode ()) & 0x7FFFFFFF;
+
+ for (Entry e = buckets [h % count]; e != null; e = e.next) {
+ if (e.hash == h && e.key1.Equals (a) && e.key2.Equals (b))
+ e.value = value;
+ }
+
+ int bucket = h % count;
+ buckets [bucket] = new Entry (a, b, h, value, buckets [bucket]);
+
+ // Grow whenever we double in size
+ if (size++ == count) {
+ count <<= 1;
+ count ++;
+
+ Entry [] newBuckets = new Entry [count];
+ foreach (Entry root in buckets) {
+ Entry e = root;
+ while (e != null) {
+ int newLoc = e.hash % count;
+ Entry n = e.next;
+ e.next = newBuckets [newLoc];
+ newBuckets [newLoc] = e;
+ e = n;
+ }
+ }
+
+ buckets = newBuckets;
+ }
+ }
+ }
}
projects / mono.git / blobdiff