/*@z04.c:Token Service:NewToken(), CopyTokenList()@***************************/
/* */
/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.18) */
/* COPYRIGHT (C) 1991, 2000 Jeffrey H. Kingston */
/* */
/* Jeffrey H. Kingston (jeff@cs.usyd.edu.au) */
/* Basser Department of Computer Science */
/* The University of Sydney 2006 */
/* AUSTRALIA */
/* */
/* 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, 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 */
/* */
/* FILE: z04.c */
/* MODULE: Token Service */
/* EXTERNS: NewToken(), CopyTokenList(), EchoCatOp(), EchoToken() */
/* */
/*****************************************************************************/
#include "externs.h"
/*****************************************************************************/
/* */
/* OBJECT NewToken(xtype, xfpos, xvspace, xhspace, xprec, xactual) */
/* */
/* Returns a new non-WORD token initialised as the parameters indicate. */
/* */
/*****************************************************************************/
OBJECT NewToken(unsigned char xtype, FILE_POS *xfpos, unsigned char xvspace,
unsigned char xhspace, unsigned char xprec, OBJECT xactual)
{ OBJECT res;
debug1(DTS, DDD, "NewToken(%s, ...)", Image(xtype));
New(res, xtype); FposCopy(fpos(res), *xfpos);
vspace(res) = xvspace; hspace(res) = xhspace;
precedence(res) = xprec; actual(res) = xactual;
debug1(DTS, DDD, "NewToken returning %s", EchoToken(res));
return res;
} /* end NewToken */
/*****************************************************************************/
/* */
/* OBJECT CopyTokenList(x, pos) */
/* */
/* Returns a copy of the list of tokens pointed to by x. */
/* All file positions in the copy are set to *pos. */
/* */
/*****************************************************************************/
OBJECT CopyTokenList(OBJECT x, FILE_POS *pos)
{ OBJECT y, z, res;
res = nilobj; y = x;
if( x != nilobj ) do
{ if( is_word(type(y)) )
{ z = MakeWord(type(y), string(y), pos);
vspace(z) = vspace(y); hspace(z) = hspace(y);
}
else z = NewToken(type(y), pos,vspace(y),hspace(y),precedence(y),actual(y));
res = Append(res, z, PARENT);
y = succ(y, PARENT);
} while( y != x );
return res;
} /* end CopyTokenList */
/*@::EchoCatOp(), EchoToken()@************************************************/
/* */
/* FULL_CHAR *EchoCatOp(xtype, xmark, xjoin) */
/* */
/* Return the catenation operator with this type, mark and join. */
/* */
/*****************************************************************************/
FULL_CHAR *EchoCatOp(unsigned xtype, BOOLEAN xmark, BOOLEAN xjoin)
{ switch( xtype )
{
case VCAT: return (xmark ? xjoin ? KW_VCAT_MJ : KW_VCAT_MN
: xjoin ? KW_VCAT_NJ : KW_VCAT_NN);
case HCAT: return (xmark ? xjoin ? KW_HCAT_MJ : KW_HCAT_MN
: xjoin ? KW_HCAT_NJ : KW_HCAT_NN);
case ACAT: return (xmark ? xjoin ? KW_ACAT_MJ : AsciiToFull("??")
: xjoin ? KW_ACAT_NJ : AsciiToFull("??") );
default: assert(FALSE, "EchoCatOp");
return STR_EMPTY;
} /* end switch */
} /* end EchoCatOp */
#if DEBUG_ON
/*****************************************************************************/
/* */
/* FULL_CHAR *EchoToken(x) */
/* */
/* Return an image of token x. Do not worry about preceding space. */
/* */
/*****************************************************************************/
FULL_CHAR *EchoToken(OBJECT x)
{ switch( type(x) )
{
case WORD:
return string(x);
case QWORD:
return StringQuotedWord(x);
case TSPACE:
case TJUXTA:
case USE:
case NOT_REVEALED:
case GSTUB_EXT:
case GSTUB_INT:
case GSTUB_NONE:
return Image(type(x));
case UNEXPECTED_EOF:
case BEGIN:
case END:
case ENV:
case ENVA:
case ENVB:
case ENVC:
case ENVD:
case CENV:
case CLOS:
case LBR:
case RBR:
case NULL_CLOS:
case PAGE_LABEL:
case CROSS:
case FORCE_CROSS:
case ONE_COL:
case ONE_ROW:
case WIDE:
case HIGH:
case HSHIFT:
case VSHIFT:
case HSCALE:
case VSCALE:
case HCOVER:
case VCOVER:
case SCALE:
case KERN_SHRINK:
case HCONTRACT:
case VCONTRACT:
case HLIMITED:
case VLIMITED:
case HEXPAND:
case VEXPAND:
case START_HVSPAN:
case START_HSPAN:
case START_VSPAN:
case HSPAN:
case VSPAN:
case PADJUST:
case HADJUST:
case VADJUST:
case ROTATE:
case BACKGROUND:
case VERBATIM:
case RAW_VERBATIM:
case CASE:
case YIELD:
case BACKEND:
case XCHAR:
case FONT:
case SPACE:
case YUNIT:
case ZUNIT:
case BREAK:
case UNDERLINE:
case COLOUR:
case OUTLINE:
case LANGUAGE:
case CURR_LANG:
case CURR_FAMILY:
case CURR_FACE:
case CURR_YUNIT:
case CURR_ZUNIT:
case COMMON:
case RUMP:
case MELD:
case INSERT:
case ONE_OF:
case NEXT:
case PLUS:
case MINUS:
case OPEN:
case TAGGED:
case INCGRAPHIC:
case SINCGRAPHIC:
case PLAIN_GRAPHIC:
case GRAPHIC:
case ACAT:
case HCAT:
case VCAT:
case CLOSURE:
case PREPEND:
case SYS_PREPEND:
case DATABASE:
case SYS_DATABASE:
case LUSE:
case LEO:
case LVIS:
return actual(x) != nilobj ? SymName(actual(x)) : Image(type(x));
default:
assert1(FALSE, "EchoToken:", Image(type(x)));
return STR_EMPTY;
}
} /* end EchoToken */
#endif
