using System;
using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using M17N;
using M17N.Core;
namespace M17N.Core
{
public class MPlist : IEnumerable
{
- public MSymbol Key;
- public object Val;
- private MPlist next;
+ public MSymbol key;
+ public object val;
+ public MPlist next;
+
+ public MSymbol Key { get { return key; } }
+ public object Val { get { return val; } }
+ public MPlist Next { get { return next; } }
+
+ private static List<MSymbol> wf_keys;
+
+ static MPlist ()
+ {
+ wf_keys = new List<MSymbol> ();
+ wf_keys.Add (MSymbol.symbol);
+ wf_keys.Add (MSymbol.mtext);
+ wf_keys.Add (MSymbol.plist);
+ wf_keys.Add (MSymbol.integer);
+ }
public MPlist ()
- {
- Key = MSymbol.nil;
- Val = null;
- }
+ {
+ key = MSymbol.nil;
+ val = null;
+ }
+
+ public MPlist (FileStream stream)
+ {
+ MStreamReader reader = new MStreamReader (stream);
+ bool result = reader.ReadElement (out key, out val);
+
+ if (result)
+ next = new MPlist (reader);
+ }
+
+ public MPlist (FileStream stream, int count)
+ {
+ MStreamReader reader = new MStreamReader (stream);
+ bool result = reader.ReadElement (out key, out val);
+
+ if (result && --count > 0)
+ next = new MPlist (reader, count);
+ else
+ next = new MPlist ();
+ }
+
+ public MPlist (FileStream stream, MSymbol stop)
+ {
+ MStreamReader reader = new MStreamReader (stream);
+ bool result;
+
+ key = MSymbol.nil;
+ val = null;
+ while (true)
+ {
+ MSymbol this_key;
+ object this_val;
+
+ result = reader.ReadElement (out this_key, out this_val);
+ if (! result)
+ return;
+ if (this_key == MSymbol.plist)
+ {
+ MPlist plist = (MPlist) this_val;
+
+ if (plist.IsSymbol && plist.Symbol == stop)
+ return;
+ }
+ key = this_key;
+ val = this_val;
+ next = new MPlist (reader, stop);
+ }
+ }
+
+ public MPlist (FileStream stream, MSymbol target, MSymbol stop)
+ {
+ MStreamReader reader = new MStreamReader (stream);
+ bool result;
+
+ key = MSymbol.nil;
+ val = null;
+ while (true)
+ {
+ MSymbol this_key;
+ object this_val;
+
+ result = reader.ReadElement (out this_key, out this_val);
+ if (! result)
+ return;
+ if (this_key == MSymbol.plist)
+ {
+ MPlist plist = (MPlist) this_val;
+
+ if (plist.IsSymbol)
+ {
+ if (plist.Symbol == stop)
+ return;
+ if (plist.Symbol == target)
+ {
+ key = target;
+ val = this_val;
+ next = new MPlist ();
+ return;
+ }
+ }
+ }
+ }
+ }
+
+ internal MPlist (MStreamReader reader)
+ {
+ bool result = reader.ReadElement (out key, out val);
+
+ if (result)
+ next = new MPlist (reader);
+ }
+
+ private MPlist (MStreamReader reader, int count)
+ {
+ bool result = reader.ReadElement (out key, out val);
+
+ if (result && --count > 0)
+ next = new MPlist (reader, count);
+ else
+ next = new MPlist ();
+ }
+
+ private MPlist (MStreamReader reader, MSymbol stop)
+ {
+ bool result;
+ MPlist next_plist = null;
+
+ key = MSymbol.nil;
+ val = null;
+ while (true)
+ {
+ MSymbol this_key;
+ object this_val;
+
+ result = reader.ReadElement (out this_key, out this_val);
+ if (! result)
+ return;
+ if (this_key == MSymbol.plist)
+ {
+ MPlist plist = (MPlist) this_val;
+
+ if (plist.IsSymbol && plist.Symbol == stop)
+ return;
+ }
+ if (next_plist == null)
+ {
+ key = this_key;
+ val = this_val;
+ next = next_plist = new MPlist ();
+ }
+ else
+ {
+ next_plist.key = this_key;
+ next_plist.val = this_val;
+ next_plist.next = new MPlist ();
+ next_plist = next_plist.next;
+ }
+ }
+ }
+
+ private MPlist (MStreamReader reader, MSymbol target, MSymbol stop)
+ {
+ bool result;
+
+ key = MSymbol.nil;
+ val = null;
+ while (true)
+ {
+ MSymbol this_key;
+ object this_val;
+
+ result = reader.ReadElement (out this_key, out this_val);
+ if (! result)
+ return;
+ if (this_key == MSymbol.plist)
+ {
+ MPlist plist = (MPlist) this_val;
+
+ if (plist.IsSymbol)
+ {
+ if (plist.Symbol == stop)
+ return;
+ if (plist.Symbol == target)
+ {
+ key = target;
+ val = this_val;
+ next = new MPlist ();
+ return;
+ }
+ }
+ }
+ }
+ }
- private MPlist (MSymbol key, object val)
+ protected MPlist (MSymbol key, object val)
{
- Key = key;
- Val = val;
+ this.key = key;
+ this.val = val;
}
public bool IsEmpty { get { return next == null; } }
- public new string ToString ()
- {
- string str = "";
+ public bool IsSymbol { get { return Key == MSymbol.symbol; } }
+ public bool IsMText { get { return Key == MSymbol.mtext; } }
+ public bool IsPlist { get { return Key == MSymbol.plist; } }
+ public bool IsInteger { get { return Key == MSymbol.integer; } }
+
+ public MSymbol Symbol { get { return (MSymbol) val; } }
+ public MText Text { get { return (MText) val; } }
+ public MPlist Plist { get { return (MPlist) val; } }
+ public int Integer { get { return (int) val; } }
- for (MPlist p = this; ! p.IsEmpty; p = p.next)
+ public int Count
+ {
+ get
{
- str += (p == this ? "(" : " ") + p.Key.ToString () + ":";
- if (p.Val is MSymbol)
- str += ((MSymbol) p.Val).ToString ();
- else if (p.Val is MPlist)
- str += ((MPlist) p.Val).ToString ();
+ int i = 0;
+
+ for (MPlist p = this; p.next != null; i++, p = p.next);
+ return i;
}
- return str + ")";
}
- public MPlist find (MSymbol key)
+ public MPlist this[int i]
+ {
+ get {
+ MPlist p;
+ for (p = this; ! p.IsEmpty && i > 0; i--, p = p.next);
+ return (i == 0 ? p : null);
+ }
+ }
+
+ public MPlist Clone ()
+ {
+ MPlist plist = new MPlist (), pl = plist;
+
+ for (MPlist p = this; p.next != null; p = p.next)
+ pl = pl.Add (p.key, p.val);
+ return plist;
+ }
+
+ public override string ToString ()
+ {
+ string str = "(";
+
+ for (MPlist p = this; ! p.IsEmpty; p = p.next)
+ {
+ if (p != this)
+ str += " ";
+ if (! wf_keys.Contains (p.key))
+ str += p.key + ":";
+ if (p.key == MSymbol.mtext)
+ str += "\"" + p.val + "\"";
+ else
+ str += p.val;
+ }
+ return str + ")";
+ }
+
+ private MPlist find (MSymbol key)
{
MPlist p;
for (p = this; ! p.IsEmpty; p = p.next)
- if (p.Key == key)
+ if (p.key == key)
break;
return p;
}
- public object get (MSymbol key)
+ public MPlist Find (MSymbol key)
{
- return find (key).Val;
+ MPlist p = find (key);
+
+ return (p.IsEmpty ? null : p);
}
- public MPlist put (MSymbol key, object val)
+ public object Get (MSymbol key)
{
- MPlist p = find (key);
+ return find (key).val;
+ }
- if (p.IsEmpty)
- return p.push (key, val);
- p.Val = val;
- return p;
+ internal MPlist Assq (MSymbol key)
+ {
+ foreach (MPlist p in this)
+ if (p.IsPlist && p.Plist.IsSymbol && p.Plist.Symbol == key)
+ return p;
+ return null;
+ }
+
+ private delegate MPlist MPlistDelegate (MSymbol key, object val);
+
+ private MPlist mplist_op (MPlistDelegate op, object val)
+ {
+ Type type = val.GetType ();
+
+ if (Object.ReferenceEquals (type, typeof (MSymbol)))
+ return op (MSymbol.symbol, val);
+ if (Object.ReferenceEquals (type, typeof (MText)))
+ return op (MSymbol.mtext, val);
+ if (Object.ReferenceEquals (type, typeof (MPlist)))
+ return op (MSymbol.plist, val);
+ if (Object.ReferenceEquals (type, typeof (int)))
+ return op (MSymbol.integer, val);
+ return op (MSymbol.t, val);
}
- public MPlist push (MSymbol key, object val)
+ public MPlist Set (MSymbol key, object val)
{
- MPlist p = new MPlist (Key, Val);
+ if (IsEmpty)
+ Push (key, val);
+ else
+ {
+ this.key = key;
+ this.val = val;
+ }
+ return this;
+ }
+
+ public MPlist Set (object val)
+ {
+ return mplist_op (Set, val);
+ }
+
+ public MPlist Put (MSymbol key, object val)
+ {
+ return find (key).Set (key, val);
+ }
+
+ public MPlist Put (object val)
+ {
+ return mplist_op (Put, val);
+ }
+
+ public MPlist Push (MSymbol key, object val)
+ {
+ MPlist p = new MPlist (this.key, this.val);
p.next = this.next;
- Key = key;
- Val = val;
+ this.key = key;
+ this.val = val;
next = p;
return this;
}
- public object pop ()
+ public MPlist Push (object val)
+ {
+ return mplist_op (Push, val);
+ }
+
+ public object Pop (out MSymbol key)
{
+ key = this.key;
if (IsEmpty)
return null;
- object val = Val;
+ object this_val = val;
- Key = next.Key;
- Val = next.Val;
+ this.key = next.key;
+ this.val = next.val;
next = next.next;
- return val;
+ return this_val;
+ }
+
+ public object Pop ()
+ {
+ MSymbol temp;
+ return Pop (out temp);
}
- public MPlist add (MSymbol key, object val)
+ public MPlist Add (MSymbol key, object val)
{
MPlist p;
for (p = this; ! p.IsEmpty; p = p.next);
- return p.push (key, val);
+ return p.Push (key, val);
+ }
+
+ public MPlist Cons (MSymbol key, object val)
+ {
+ MPlist plist = new MPlist ();
+ plist.key = key;
+ plist.val = val;
+ plist.next = this;
+ return plist;
+ }
+
+ public MPlist Clear ()
+ {
+ key = MSymbol.nil;
+ val = null;
+ next = null;
+ return this;
}
// Implement IEnumerable interface.
+ // foreach (MPlist p in plist) { ... }
public virtual IEnumerator GetEnumerator ()
{
{
if (current == null)
current = plist;
- else if (current.IsEmpty)
- return false;
else
current = current.next;
- return true;
+ return (! current.IsEmpty);
+ }
+ }
+ }
+
+ public class MStreamReader : StreamReader
+ {
+ private static char[] escaped_char = new char[128];
+ private static int[] hexadecimal = new int[128];
+ private char comment_start;
+ private bool line_oriented;
+
+ public MStreamReader (Stream stream) : base (stream)
+ {
+ comment_start = ';';
+ line_oriented = false;
+ }
+
+ public MStreamReader (Stream stream, char comment_start,
+ bool line_oriented) : base (stream)
+ {
+ this.comment_start = comment_start;
+ this.line_oriented = line_oriented;
+ }
+
+ static MStreamReader ()
+ {
+ for (int i = 0; i < 128; i++)
+ escaped_char[i] = (char) i;
+ escaped_char['0'] = (char) 0;
+ escaped_char['e'] = (char) 27;
+ escaped_char['a'] = '\a';
+ escaped_char['b'] = '\b';
+ escaped_char['f'] = '\f';
+ escaped_char['n'] = '\n';
+ escaped_char['r'] = '\r';
+ escaped_char['t'] = '\t';
+ escaped_char['v'] = '\v';
+ for (int i = 0; i < 128; i++)
+ hexadecimal[i] = -1;
+ for (int i = '0'; i <= '9'; i++)
+ hexadecimal[i] = i - '0';
+ for (int i = 'A'; i <= 'F'; i++)
+ hexadecimal[i] = hexadecimal[i + 'a' - 'A'] = i -'A' + 10;
}
+
+ private int ReadHexadecimal (int max)
+ {
+ int i = 0, c;
+
+ while ((c = Peek ()) >= 0 && c < 128 && (c = hexadecimal[c]) >= 0)
+ {
+ if (max >= 0 && (i * 16) + c >= max)
+ break;
+ Read ();
+ i = (i * 16) + c;
+ }
+ return i;
+ }
+
+ public bool ForwardLine ()
+ {
+ int c;
+ while ((c = Read ()) >=0 && c != '\n');
+ return (c == '\n');
+ }
+
+ public bool SkipSpace (out int c)
+ {
+ while ((c = Peek ()) == ' ' && c == '\t' && c == '\f')
+ Read ();
+ return (c >= 0);
+ }
+
+ public bool PeekChar (out int c)
+ {
+ while ((c = Peek ()) != -1)
+ {
+ if (c == comment_start)
+ ForwardLine ();
+ else if (c != ' ' && c != '\t' && c != '\n')
+ return true;
+ else if (c == '\n' && line_oriented)
+ return false;
+ else
+ Read ();
+ }
+ return false;
+ }
+
+ public bool ReadInteger (out int i)
+ {
+ int c = Peek ();
+
+ i = 0;
+ if (c < 0)
+ return false;
+ if (c == '0')
+ {
+ Read ();
+ c = Peek ();
+ if (c == 'x')
+ {
+ Read ();
+ i = ReadHexadecimal (-1);
+ return true;
+ }
+ }
+ while ((c = Peek ()) >= '0' && c <= '9')
+ i = (i * 10) + (Read () - '0');
+ return true;
+ }
+
+ public bool ReadChar (out int c)
+ {
+ c = Read ();
+ if (c < 0 || (line_oriented && c == '\n'))
+ return false;
+ if (c == '\\')
+ {
+ c = Read ();
+ if (c == '\n')
+ return ReadChar (out c);
+ if (c < 0)
+ c = '\\';
+ else if (c == 'x' || c == 'u' || c == 'U')
+ c = ReadHexadecimal (0x10FFFF);
+ else if (c < 128)
+ c = escaped_char[c];
+ }
+ return true;
+ }
+
+ private bool read_string (out string str, int prefix, bool for_symbol)
+ {
+ char[] buf = new char[256];
+ int c;
+ int i = 0;
+
+ str = null;
+ if (prefix >= 0)
+ buf[i++] = (char) prefix;
+ while ((c = Peek ()) >= 0
+ && c != '\"'
+ && (! for_symbol
+ || (c != '(' && c != ')' && c != ' ' && c != '\t' && c != '\n')))
+ {
+ if (! ReadChar (out c))
+ break;
+ if (c < 0x10000)
+ {
+ buf[i++] = (char) c;
+ }
+ else
+ {
+ buf[i++] = (char) (0xD800 + ((c - 0x10000) >> 10));
+ buf[i++] = (char) (0xDC00 + ((c - 0x10000) & 0x3FF));
+ }
+ if (i >= 255)
+ {
+ if (str == null)
+ str = new string (buf, 0, i);
+ else
+ str += new string (buf, 0, i);
+ i = 0;
+ }
+ }
+ if (c == '\"' && ! for_symbol)
+ Read ();
+ if (i > 0)
+ {
+ if (str == null)
+ str = new string (buf, 0, i);
+ else
+ str += new string (buf, 0, i);
+ }
+ return (str != null);
+ }
+
+ public bool ReadString (out string str)
+ {
+ return read_string (out str, -1, false);
+ }
+
+ public bool ReadMText (out MText mt)
+ {
+ int c = Peek ();
+
+ if (c == '"')
+ {
+ string str;
+
+ Read ();
+ if (read_string (out str, -1, false))
+ mt = new MText (str);
+ else
+ mt = new MText ();
+ return true;
+ }
+ mt = new MText ();
+ if (c == '\\')
+ {
+ while ((c = Peek ()) == '\\')
+ {
+ Read ();
+ c = Peek ();
+ if (c != 'x')
+ break;
+ Read ();
+ mt.Cat (ReadHexadecimal (0x10FFFF));
+ }
+ return true;
+ }
+ return false;
+ }
+
+ public bool ReadSymbol (out MSymbol sym, int prefix)
+ {
+ string str;
+
+ if (read_string (out str, prefix, true))
+ {
+ sym = MSymbol.Of (str);
+ return true;
+ }
+ sym = MSymbol.nil;
+ return false;
+ }
+
+ internal bool ReadElement (out MSymbol key, out object val)
+ {
+ int c;
+
+ if (! PeekChar (out c))
+ {
+ val = null;
+ key = MSymbol.nil;
+ return false;
+ }
+
+ if (c == '(')
+ {
+ Read ();
+ val = new MPlist (this);
+ key = MSymbol.plist;
+ }
+ else if (c == '"')
+ {
+ MText mt;
+ ReadMText (out mt);
+ val = mt;
+ key = MSymbol.mtext;
+ }
+ else if (c >= '0' && c <= '9')
+ {
+ int i;
+ ReadInteger (out i);
+ val = i;
+ key = MSymbol.integer;
+ }
+ else if (c == '-')
+ {
+ Read ();
+ c = Peek ();
+ if (c >= '0' && c <= '9')
+ {
+ int i;
+ ReadInteger (out i);
+ val = - i;
+ key = MSymbol.integer;
+ }
+ else
+ {
+ MSymbol sym;
+
+ ReadSymbol (out sym, '-');
+ val = sym;
+ key = MSymbol.symbol;
+ }
+ }
+ else if (c == '?')
+ {
+ Read ();
+ if (ReadChar (out c))
+ {
+ val = c;
+ key = MSymbol.integer;
+ }
+ else
+ {
+ val = null;
+ key = MSymbol.nil;
+ }
+ }
+ else if (c == '#')
+ {
+ Read ();
+ if ((c = Peek ()) == 'x' || c == 'u')
+ {
+ Read ();
+ val = ReadHexadecimal (-1);
+ key = MSymbol.integer;
+ }
+ else
+ {
+ MSymbol sym;
+
+ ReadSymbol (out sym, '#');
+ val = sym;
+ key = MSymbol.symbol;
+ }
+ }
+ else if (c == ')')
+ {
+ Read ();
+ val = null;
+ key = MSymbol.nil;
+ return false;
+ }
+ else
+ {
+ MSymbol sym;
+
+ ReadSymbol (out sym, -1);
+ val = sym;
+ key = MSymbol.symbol;
+ }
+ return true;
}
}
}
projects / m17n / m17n-lib-cs.git / blobdiff