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/*
* LispReader.java
*
* Copyright (C) 2004-2007 Peter Graves
* $Id$
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
public final class LispReader
{
// ### read-comment
public static final ReaderMacroFunction READ_COMMENT =
new ReaderMacroFunction("read-comment", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char ignored)
{
try
{
while (true) {
int n = stream._readChar();
if (n < 0)
return LispThread.currentThread().setValues();
if (n == '\n')
return LispThread.currentThread().setValues();
}
}
catch (java.io.IOException e)
{
return LispThread.currentThread().setValues();
}
}
};
// ### read-string
public static final ReaderMacroFunction READ_STRING =
new ReaderMacroFunction("read-string", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char terminator)
{
return stream.readString(terminator, Stream.currentReadtable);
}
};
// ### read-list
public static final ReaderMacroFunction READ_LIST =
new ReaderMacroFunction("read-list", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char ignored)
{
return stream.readList(false, Stream.currentReadtable);
}
};
// ### read-right-paren
public static final ReaderMacroFunction READ_RIGHT_PAREN =
new ReaderMacroFunction("read-right-paren", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char ignored)
{
return error(new ReaderError("Unmatched right parenthesis.", stream));
}
};
// ### read-quote
public static final ReaderMacroFunction READ_QUOTE =
new ReaderMacroFunction("read-quote", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char ignored)
{
return new Cons(Symbol.QUOTE,
new Cons(stream.read(true, NIL, true,
LispThread.currentThread(),
Stream.currentReadtable)));
}
};
// ### read-dispatch-char
public static final ReaderMacroFunction READ_DISPATCH_CHAR =
new ReaderMacroFunction("read-dispatch-char", PACKAGE_SYS, false,
"stream character")
{
@Override
public LispObject execute(Stream stream, char c)
{
return stream.readDispatchChar(c, Stream.currentReadtable);
}
};
// ### sharp-left-paren
public static final DispatchMacroFunction SHARP_LEFT_PAREN =
new DispatchMacroFunction("sharp-left-paren", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readSharpLeftParen(c, n, Stream.currentReadtable);
}
};
// ### sharp-star
public static final DispatchMacroFunction SHARP_STAR =
new DispatchMacroFunction("sharp-star", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char ignored, int n)
{
return stream.readSharpStar(ignored, n, Stream.currentReadtable);
}
};
// ### sharp-dot
public static final DispatchMacroFunction SHARP_DOT =
new DispatchMacroFunction("sharp-dot", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readSharpDot(c, n, Stream.currentReadtable);
}
};
// ### sharp-colon
public static final DispatchMacroFunction SHARP_COLON =
new DispatchMacroFunction("sharp-colon", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readSymbol();
}
};
// ### sharp-a
public static final DispatchMacroFunction SHARP_A =
new DispatchMacroFunction("sharp-a", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readArray(n, Stream.currentReadtable);
}
};
// ### sharp-b
public static final DispatchMacroFunction SHARP_B =
new DispatchMacroFunction("sharp-b", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readRadix(2, Stream.currentReadtable);
}
};
// ### sharp-c
public static final DispatchMacroFunction SHARP_C =
new DispatchMacroFunction("sharp-c", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readComplex(Stream.currentReadtable);
}
};
// ### sharp-o
public static final DispatchMacroFunction SHARP_O =
new DispatchMacroFunction("sharp-o", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readRadix(8, Stream.currentReadtable);
}
};
// ### sharp-p
public static final DispatchMacroFunction SHARP_P =
new DispatchMacroFunction("sharp-p", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readPathname(Stream.currentReadtable);
}
};
// ### sharp-r
public static final DispatchMacroFunction SHARP_R =
new DispatchMacroFunction("sharp-r", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readRadix(n, Stream.currentReadtable);
}
};
// ### sharp-s
public static final DispatchMacroFunction SHARP_S =
new DispatchMacroFunction("sharp-s", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readStructure(Stream.currentReadtable);
}
};
// ### sharp-x
public static final DispatchMacroFunction SHARP_X =
new DispatchMacroFunction("sharp-x", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return stream.readRadix(16, Stream.currentReadtable);
}
};
// ### sharp-quote
public static final DispatchMacroFunction SHARP_QUOTE =
new DispatchMacroFunction("sharp-quote", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
return new Cons(Symbol.FUNCTION,
new Cons(stream.read(true, NIL, true,
LispThread.currentThread(),
Stream.currentReadtable)));
}
};
// ### sharp-backslash
public static final DispatchMacroFunction SHARP_BACKSLASH =
new DispatchMacroFunction("sharp-backslash", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
final LispThread thread = LispThread.currentThread();
final Readtable rt = (Readtable) Symbol.CURRENT_READTABLE.symbolValue(thread);
return stream.readCharacterLiteral(rt, thread);
}
};
// ### sharp-vertical-bar
public static final DispatchMacroFunction SHARP_VERTICAL_BAR =
new DispatchMacroFunction("sharp-vertical-bar", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
stream.skipBalancedComment();
return LispThread.currentThread().setValues();
}
};
// ### sharp-illegal
public static final DispatchMacroFunction SHARP_ILLEGAL =
new DispatchMacroFunction("sharp-illegal", PACKAGE_SYS, false,
"stream sub-char numarg")
{
@Override
public LispObject execute(Stream stream, char c, int n)
{
StringBuilder sb = new StringBuilder("Illegal # macro character: #\\");
String s = LispCharacter.charToName(c);
if (s != null)
sb.append(s);
else
sb.append(c);
return error(new ReaderError(sb.toString(), stream));
}
};
}
