1808 lines
34 KiB
Plaintext
1808 lines
34 KiB
Plaintext
/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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%{
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#include "pic.h"
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#include "ptable.h"
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#include "object.h"
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extern int delim_flag;
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extern void do_copy(const char *);
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extern void copy_rest_thru(const char *, const char *);
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extern void copy_file_thru(const char *, const char *, const char *);
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extern void push_body(const char *);
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extern void do_for(char *var, double from, double to,
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int by_is_multiplicative, double by, char *body);
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extern void do_lookahead();
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#ifndef HAVE_FMOD
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extern "C" {
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double fmod(double, double);
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}
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#endif
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#undef rand
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#undef srand
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extern "C" {
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int rand();
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#ifdef RET_TYPE_SRAND_IS_VOID
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void srand(unsigned int);
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#else
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int srand(unsigned int);
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#endif
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}
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/* Maximum number of characters produced by printf("%g") */
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#define GDIGITS 14
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int yylex();
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void yyerror(const char *);
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void reset(const char *nm);
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void reset_all();
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place *lookup_label(const char *);
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void define_label(const char *label, const place *pl);
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direction current_direction;
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position current_position;
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implement_ptable(place)
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PTABLE(place) top_table;
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PTABLE(place) *current_table = &top_table;
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saved_state *current_saved_state = 0;
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object_list olist;
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const char *ordinal_postfix(int n);
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const char *object_type_name(object_type type);
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char *format_number(const char *form, double n);
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char *do_sprintf(const char *form, const double *v, int nv);
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%}
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%union {
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char *str;
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int n;
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double x;
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struct { double x, y; } pair;
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struct { double x; char *body; } if_data;
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struct { char *str; const char *filename; int lineno; } lstr;
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struct { double *v; int nv; int maxv; } dv;
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struct { double val; int is_multiplicative; } by;
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place pl;
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object *obj;
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corner crn;
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path *pth;
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object_spec *spec;
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saved_state *pstate;
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graphics_state state;
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object_type obtype;
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}
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%token <str> LABEL
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%token <str> VARIABLE
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%token <x> NUMBER
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%token <lstr> TEXT
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%token <lstr> COMMAND_LINE
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%token <str> DELIMITED
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%token <n> ORDINAL
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%token TH
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%token LEFT_ARROW_HEAD
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%token RIGHT_ARROW_HEAD
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%token DOUBLE_ARROW_HEAD
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%token LAST
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%token UP
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%token DOWN
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%token LEFT
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%token RIGHT
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%token BOX
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%token CIRCLE
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%token ELLIPSE
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%token ARC
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%token LINE
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%token ARROW
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%token MOVE
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%token SPLINE
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%token HEIGHT
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%token RADIUS
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%token WIDTH
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%token DIAMETER
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%token UP
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%token DOWN
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%token RIGHT
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%token LEFT
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%token FROM
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%token TO
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%token AT
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%token WITH
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%token BY
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%token THEN
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%token DOTTED
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%token DASHED
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%token CHOP
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%token SAME
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%token INVISIBLE
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%token LJUST
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%token RJUST
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%token ABOVE
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%token BELOW
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%token OF
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%token THE
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%token WAY
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%token BETWEEN
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%token AND
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%token HERE
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%token DOT_N
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%token DOT_E
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%token DOT_W
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%token DOT_S
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%token DOT_NE
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%token DOT_SE
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%token DOT_NW
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%token DOT_SW
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%token DOT_C
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%token DOT_START
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%token DOT_END
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%token DOT_X
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%token DOT_Y
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%token DOT_HT
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%token DOT_WID
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%token DOT_RAD
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%token SIN
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%token COS
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%token ATAN2
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%token LOG
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%token EXP
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%token SQRT
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%token K_MAX
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%token K_MIN
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%token INT
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%token RAND
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%token SRAND
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%token COPY
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%token THRU
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%token TOP
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%token BOTTOM
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%token UPPER
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%token LOWER
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%token SH
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%token PRINT
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%token CW
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%token CCW
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%token FOR
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%token DO
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%token IF
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%token ELSE
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%token ANDAND
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%token OROR
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%token NOTEQUAL
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%token EQUALEQUAL
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%token LESSEQUAL
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%token GREATEREQUAL
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%token LEFT_CORNER
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%token RIGHT_CORNER
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%token CENTER
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%token END
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%token START
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%token RESET
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%token UNTIL
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%token PLOT
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%token THICKNESS
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%token FILL
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%token ALIGNED
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%token SPRINTF
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%token COMMAND
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%token DEFINE
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%token UNDEF
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/* this ensures that plot 17 "%g" parses as (plot 17 "%g") */
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%left PLOT
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%left TEXT SPRINTF
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/* give text adjustments higher precedence than TEXT, so that
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box "foo" above ljust == box ("foo" above ljust)
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*/
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%left LJUST RJUST ABOVE BELOW
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%left LEFT RIGHT
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/* Give attributes that take an optional expression a higher
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precedence than left and right, so that eg `line chop left'
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parses properly. */
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%left CHOP DASHED DOTTED UP DOWN FILL
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%left LABEL
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%left VARIABLE NUMBER '(' SIN COS ATAN2 LOG EXP SQRT K_MAX K_MIN INT RAND SRAND LAST
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%left ORDINAL HERE '`'
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/* these need to be lower than '-' */
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%left HEIGHT RADIUS WIDTH DIAMETER FROM TO AT THICKNESS
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/* these must have higher precedence than CHOP so that `label %prec CHOP'
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works */
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%left DOT_N DOT_E DOT_W DOT_S DOT_NE DOT_SE DOT_NW DOT_SW DOT_C
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%left DOT_START DOT_END TOP BOTTOM LEFT_CORNER RIGHT_CORNER
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%left UPPER LOWER CENTER START END
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%left ','
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%left OROR
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%left ANDAND
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%left EQUALEQUAL NOTEQUAL
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%left '<' '>' LESSEQUAL GREATEREQUAL
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%left BETWEEN OF
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%left AND
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%left '+' '-'
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%left '*' '/' '%'
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%right '!'
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%right '^'
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%type <x> expr any_expr text_expr
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%type <by> optional_by
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%type <pair> expr_pair position_not_place
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%type <if_data> simple_if
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%type <obj> nth_primitive
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%type <crn> corner
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%type <pth> path label_path relative_path
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%type <pl> place label element element_list middle_element_list
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%type <spec> object_spec
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%type <pair> position
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%type <obtype> object_type
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%type <n> optional_ordinal_last ordinal
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%type <str> until
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%type <dv> sprintf_args
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%type <lstr> text print_args print_arg
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%%
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top:
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optional_separator
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| element_list
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{
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if (olist.head)
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print_picture(olist.head);
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}
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;
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element_list:
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optional_separator middle_element_list optional_separator
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{ $$ = $2; }
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;
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middle_element_list:
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element
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{ $$ = $1; }
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| middle_element_list separator element
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{ $$ = $1; }
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;
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optional_separator:
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/* empty */
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| separator
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;
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separator:
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';'
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| separator ';'
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;
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placeless_element:
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VARIABLE '=' any_expr
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{
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define_variable($1, $3);
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a_delete $1;
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}
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| VARIABLE ':' '=' any_expr
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{
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place *p = lookup_label($1);
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if (!p) {
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lex_error("variable `%1' not defined", $1);
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YYABORT;
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}
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p->obj = 0;
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p->x = $4;
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p->y = 0.0;
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a_delete $1;
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}
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| UP
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{ current_direction = UP_DIRECTION; }
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| DOWN
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{ current_direction = DOWN_DIRECTION; }
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| LEFT
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{ current_direction = LEFT_DIRECTION; }
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| RIGHT
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{ current_direction = RIGHT_DIRECTION; }
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| COMMAND_LINE
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{
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olist.append(make_command_object($1.str, $1.filename,
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$1.lineno));
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}
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| COMMAND print_args
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{
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olist.append(make_command_object($2.str, $2.filename,
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$2.lineno));
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}
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| PRINT print_args
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{
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fprintf(stderr, "%s\n", $2.str);
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a_delete $2.str;
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fflush(stderr);
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}
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| SH
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{ delim_flag = 1; }
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DELIMITED
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{
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delim_flag = 0;
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if (safer_flag)
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lex_error("unsafe to run command `%1'", $3);
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else
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system($3);
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a_delete $3;
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}
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| COPY TEXT
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{
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if (yychar < 0)
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do_lookahead();
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do_copy($2.str);
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// do not delete the filename
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}
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| COPY TEXT THRU
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{ delim_flag = 2; }
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DELIMITED
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{ delim_flag = 0; }
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until
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{
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if (yychar < 0)
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do_lookahead();
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copy_file_thru($2.str, $5, $7);
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// do not delete the filename
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a_delete $5;
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a_delete $7;
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}
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| COPY THRU
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{ delim_flag = 2; }
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DELIMITED
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{ delim_flag = 0; }
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until
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{
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if (yychar < 0)
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do_lookahead();
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copy_rest_thru($4, $6);
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a_delete $4;
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a_delete $6;
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}
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| FOR VARIABLE '=' expr TO expr optional_by DO
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{ delim_flag = 1; }
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DELIMITED
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{
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delim_flag = 0;
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if (yychar < 0)
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do_lookahead();
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do_for($2, $4, $6, $7.is_multiplicative, $7.val, $10);
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}
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| simple_if
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{
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if (yychar < 0)
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do_lookahead();
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if ($1.x != 0.0)
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push_body($1.body);
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a_delete $1.body;
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}
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| simple_if ELSE
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{ delim_flag = 1; }
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DELIMITED
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{
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delim_flag = 0;
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if (yychar < 0)
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do_lookahead();
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if ($1.x != 0.0)
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push_body($1.body);
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else
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push_body($4);
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a_delete $1.body;
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a_delete $4;
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}
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| reset_variables
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| RESET
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{ define_variable("scale", 1.0); }
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;
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reset_variables:
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RESET VARIABLE
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{ reset($2); a_delete $2; }
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| reset_variables VARIABLE
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{ reset($2); a_delete $2; }
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| reset_variables ',' VARIABLE
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{ reset($3); a_delete $3; }
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;
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print_args:
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print_arg
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{ $$ = $1; }
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| print_args print_arg
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{
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$$.str = new char[strlen($1.str) + strlen($2.str) + 1];
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strcpy($$.str, $1.str);
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strcat($$.str, $2.str);
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a_delete $1.str;
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a_delete $2.str;
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if ($1.filename) {
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$$.filename = $1.filename;
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$$.lineno = $1.lineno;
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}
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else if ($2.filename) {
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$$.filename = $2.filename;
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$$.lineno = $2.lineno;
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}
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}
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;
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print_arg:
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expr %prec ','
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{
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$$.str = new char[GDIGITS + 1];
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sprintf($$.str, "%g", $1);
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$$.filename = 0;
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$$.lineno = 0;
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}
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| text
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{ $$ = $1; }
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| position %prec ','
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{
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$$.str = new char[GDIGITS + 2 + GDIGITS + 1];
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sprintf($$.str, "%g, %g", $1.x, $1.y);
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$$.filename = 0;
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$$.lineno = 0;
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}
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simple_if:
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IF any_expr THEN
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{ delim_flag = 1; }
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DELIMITED
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{ delim_flag = 0; $$.x = $2; $$.body = $5; }
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;
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until:
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/* empty */
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{ $$ = 0; }
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| UNTIL TEXT
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{ $$ = $2.str; }
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;
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any_expr:
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expr
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{ $$ = $1; }
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| text_expr
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{ $$ = $1; }
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;
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text_expr:
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text EQUALEQUAL text
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{
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$$ = strcmp($1.str, $3.str) == 0;
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a_delete $1.str;
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a_delete $3.str;
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}
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| text NOTEQUAL text
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{
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$$ = strcmp($1.str, $3.str) != 0;
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a_delete $1.str;
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a_delete $3.str;
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}
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| text_expr ANDAND text_expr
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{ $$ = ($1 != 0.0 && $3 != 0.0); }
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| text_expr ANDAND expr
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{ $$ = ($1 != 0.0 && $3 != 0.0); }
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| expr ANDAND text_expr
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{ $$ = ($1 != 0.0 && $3 != 0.0); }
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| text_expr OROR text_expr
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{ $$ = ($1 != 0.0 || $3 != 0.0); }
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| text_expr OROR expr
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{ $$ = ($1 != 0.0 || $3 != 0.0); }
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| expr OROR text_expr
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{ $$ = ($1 != 0.0 || $3 != 0.0); }
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| '!' text_expr
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{ $$ = ($2 == 0.0); }
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;
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optional_by:
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/* empty */
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{ $$.val = 1.0; $$.is_multiplicative = 0; }
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| BY expr
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{ $$.val = $2; $$.is_multiplicative = 0; }
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| BY '*' expr
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{ $$.val = $3; $$.is_multiplicative = 1; }
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;
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element:
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object_spec
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{
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$$.obj = $1->make_object(¤t_position,
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¤t_direction);
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if ($$.obj == 0)
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YYABORT;
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delete $1;
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if ($$.obj)
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olist.append($$.obj);
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else {
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$$.x = current_position.x;
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$$.y = current_position.y;
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}
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}
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| LABEL ':' optional_separator element
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{ $$ = $4; define_label($1, & $$); a_delete $1; }
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| LABEL ':' optional_separator position_not_place
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{
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$$.obj = 0;
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$$.x = $4.x;
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$$.y = $4.y;
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define_label($1, & $$);
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a_delete $1;
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}
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| LABEL ':' optional_separator place
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{
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$$ = $4;
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define_label($1, & $$);
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a_delete $1;
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}
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| '{'
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{
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$<state>$.x = current_position.x;
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$<state>$.y = current_position.y;
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$<state>$.dir = current_direction;
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}
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element_list '}'
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{
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current_position.x = $<state>2.x;
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current_position.y = $<state>2.y;
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current_direction = $<state>2.dir;
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}
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optional_element
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{
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$$ = $3;
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}
|
|
| placeless_element
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{
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|
$$.obj = 0;
|
|
$$.x = current_position.x;
|
|
$$.y = current_position.y;
|
|
}
|
|
;
|
|
|
|
optional_element:
|
|
/* empty */
|
|
{}
|
|
| element
|
|
{}
|
|
;
|
|
|
|
object_spec:
|
|
BOX
|
|
{
|
|
$$ = new object_spec(BOX_OBJECT);
|
|
}
|
|
| CIRCLE
|
|
{
|
|
$$ = new object_spec(CIRCLE_OBJECT);
|
|
}
|
|
| ELLIPSE
|
|
{
|
|
$$ = new object_spec(ELLIPSE_OBJECT);
|
|
}
|
|
| ARC
|
|
{
|
|
$$ = new object_spec(ARC_OBJECT);
|
|
$$->dir = current_direction;
|
|
}
|
|
| LINE
|
|
{
|
|
$$ = new object_spec(LINE_OBJECT);
|
|
lookup_variable("lineht", & $$->segment_height);
|
|
lookup_variable("linewid", & $$->segment_width);
|
|
$$->dir = current_direction;
|
|
}
|
|
| ARROW
|
|
{
|
|
$$ = new object_spec(ARROW_OBJECT);
|
|
lookup_variable("lineht", & $$->segment_height);
|
|
lookup_variable("linewid", & $$->segment_width);
|
|
$$->dir = current_direction;
|
|
}
|
|
| MOVE
|
|
{
|
|
$$ = new object_spec(MOVE_OBJECT);
|
|
lookup_variable("moveht", & $$->segment_height);
|
|
lookup_variable("movewid", & $$->segment_width);
|
|
$$->dir = current_direction;
|
|
}
|
|
| SPLINE
|
|
{
|
|
$$ = new object_spec(SPLINE_OBJECT);
|
|
lookup_variable("lineht", & $$->segment_height);
|
|
lookup_variable("linewid", & $$->segment_width);
|
|
$$->dir = current_direction;
|
|
}
|
|
| text %prec TEXT
|
|
{
|
|
$$ = new object_spec(TEXT_OBJECT);
|
|
$$->text = new text_item($1.str, $1.filename, $1.lineno);
|
|
}
|
|
| PLOT expr
|
|
{
|
|
$$ = new object_spec(TEXT_OBJECT);
|
|
$$->text = new text_item(format_number(0, $2), 0, -1);
|
|
}
|
|
| PLOT expr text
|
|
{
|
|
$$ = new object_spec(TEXT_OBJECT);
|
|
$$->text = new text_item(format_number($3.str, $2),
|
|
$3.filename, $3.lineno);
|
|
a_delete $3.str;
|
|
}
|
|
| '['
|
|
{
|
|
saved_state *p = new saved_state;
|
|
$<pstate>$ = p;
|
|
p->x = current_position.x;
|
|
p->y = current_position.y;
|
|
p->dir = current_direction;
|
|
p->tbl = current_table;
|
|
p->prev = current_saved_state;
|
|
current_position.x = 0.0;
|
|
current_position.y = 0.0;
|
|
current_table = new PTABLE(place);
|
|
current_saved_state = p;
|
|
olist.append(make_mark_object());
|
|
}
|
|
element_list ']'
|
|
{
|
|
current_position.x = $<pstate>2->x;
|
|
current_position.y = $<pstate>2->y;
|
|
current_direction = $<pstate>2->dir;
|
|
$$ = new object_spec(BLOCK_OBJECT);
|
|
olist.wrap_up_block(& $$->oblist);
|
|
$$->tbl = current_table;
|
|
current_table = $<pstate>2->tbl;
|
|
current_saved_state = $<pstate>2->prev;
|
|
delete $<pstate>2;
|
|
}
|
|
| object_spec HEIGHT expr
|
|
{
|
|
$$ = $1;
|
|
$$->height = $3;
|
|
$$->flags |= HAS_HEIGHT;
|
|
}
|
|
| object_spec RADIUS expr
|
|
{
|
|
$$ = $1;
|
|
$$->radius = $3;
|
|
$$->flags |= HAS_RADIUS;
|
|
}
|
|
| object_spec WIDTH expr
|
|
{
|
|
$$ = $1;
|
|
$$->width = $3;
|
|
$$->flags |= HAS_WIDTH;
|
|
}
|
|
| object_spec DIAMETER expr
|
|
{
|
|
$$ = $1;
|
|
$$->radius = $3/2.0;
|
|
$$->flags |= HAS_RADIUS;
|
|
}
|
|
| object_spec expr %prec HEIGHT
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_SEGMENT;
|
|
switch ($$->dir) {
|
|
case UP_DIRECTION:
|
|
$$->segment_pos.y += $2;
|
|
break;
|
|
case DOWN_DIRECTION:
|
|
$$->segment_pos.y -= $2;
|
|
break;
|
|
case RIGHT_DIRECTION:
|
|
$$->segment_pos.x += $2;
|
|
break;
|
|
case LEFT_DIRECTION:
|
|
$$->segment_pos.x -= $2;
|
|
break;
|
|
}
|
|
}
|
|
| object_spec UP
|
|
{
|
|
$$ = $1;
|
|
$$->dir = UP_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.y += $$->segment_height;
|
|
}
|
|
| object_spec UP expr
|
|
{
|
|
$$ = $1;
|
|
$$->dir = UP_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.y += $3;
|
|
}
|
|
| object_spec DOWN
|
|
{
|
|
$$ = $1;
|
|
$$->dir = DOWN_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.y -= $$->segment_height;
|
|
}
|
|
| object_spec DOWN expr
|
|
{
|
|
$$ = $1;
|
|
$$->dir = DOWN_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.y -= $3;
|
|
}
|
|
| object_spec RIGHT
|
|
{
|
|
$$ = $1;
|
|
$$->dir = RIGHT_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x += $$->segment_width;
|
|
}
|
|
| object_spec RIGHT expr
|
|
{
|
|
$$ = $1;
|
|
$$->dir = RIGHT_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x += $3;
|
|
}
|
|
| object_spec LEFT
|
|
{
|
|
$$ = $1;
|
|
$$->dir = LEFT_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x -= $$->segment_width;
|
|
}
|
|
| object_spec LEFT expr
|
|
{
|
|
$$ = $1;
|
|
$$->dir = LEFT_DIRECTION;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x -= $3;
|
|
}
|
|
| object_spec FROM position
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_FROM;
|
|
$$->from.x = $3.x;
|
|
$$->from.y = $3.y;
|
|
}
|
|
| object_spec TO position
|
|
{
|
|
$$ = $1;
|
|
if ($$->flags & HAS_SEGMENT)
|
|
$$->segment_list = new segment($$->segment_pos,
|
|
$$->segment_is_absolute,
|
|
$$->segment_list);
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x = $3.x;
|
|
$$->segment_pos.y = $3.y;
|
|
$$->segment_is_absolute = 1;
|
|
$$->flags |= HAS_TO;
|
|
$$->to.x = $3.x;
|
|
$$->to.y = $3.y;
|
|
}
|
|
| object_spec AT position
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_AT;
|
|
$$->at.x = $3.x;
|
|
$$->at.y = $3.y;
|
|
if ($$->type != ARC_OBJECT) {
|
|
$$->flags |= HAS_FROM;
|
|
$$->from.x = $3.x;
|
|
$$->from.y = $3.y;
|
|
}
|
|
}
|
|
| object_spec WITH path
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_WITH;
|
|
$$->with = $3;
|
|
}
|
|
| object_spec BY expr_pair
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_SEGMENT;
|
|
$$->segment_pos.x += $3.x;
|
|
$$->segment_pos.y += $3.y;
|
|
}
|
|
| object_spec THEN
|
|
{
|
|
$$ = $1;
|
|
if ($$->flags & HAS_SEGMENT) {
|
|
$$->segment_list = new segment($$->segment_pos,
|
|
$$->segment_is_absolute,
|
|
$$->segment_list);
|
|
$$->flags &= ~HAS_SEGMENT;
|
|
$$->segment_pos.x = $$->segment_pos.y = 0.0;
|
|
$$->segment_is_absolute = 0;
|
|
}
|
|
}
|
|
| object_spec DOTTED
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_DOTTED;
|
|
lookup_variable("dashwid", & $$->dash_width);
|
|
}
|
|
| object_spec DOTTED expr
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_DOTTED;
|
|
$$->dash_width = $3;
|
|
}
|
|
| object_spec DASHED
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_DASHED;
|
|
lookup_variable("dashwid", & $$->dash_width);
|
|
}
|
|
| object_spec DASHED expr
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_DASHED;
|
|
$$->dash_width = $3;
|
|
}
|
|
| object_spec FILL
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_DEFAULT_FILLED;
|
|
}
|
|
| object_spec FILL expr
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_FILLED;
|
|
$$->fill = $3;
|
|
}
|
|
| object_spec CHOP
|
|
{
|
|
$$ = $1;
|
|
// line chop chop means line chop 0 chop 0
|
|
if ($$->flags & IS_DEFAULT_CHOPPED) {
|
|
$$->flags |= IS_CHOPPED;
|
|
$$->flags &= ~IS_DEFAULT_CHOPPED;
|
|
$$->start_chop = $$->end_chop = 0.0;
|
|
}
|
|
else if ($$->flags & IS_CHOPPED) {
|
|
$$->end_chop = 0.0;
|
|
}
|
|
else {
|
|
$$->flags |= IS_DEFAULT_CHOPPED;
|
|
}
|
|
}
|
|
| object_spec CHOP expr
|
|
{
|
|
$$ = $1;
|
|
if ($$->flags & IS_DEFAULT_CHOPPED) {
|
|
$$->flags |= IS_CHOPPED;
|
|
$$->flags &= ~IS_DEFAULT_CHOPPED;
|
|
$$->start_chop = 0.0;
|
|
$$->end_chop = $3;
|
|
}
|
|
else if ($$->flags & IS_CHOPPED) {
|
|
$$->end_chop = $3;
|
|
}
|
|
else {
|
|
$$->start_chop = $$->end_chop = $3;
|
|
$$->flags |= IS_CHOPPED;
|
|
}
|
|
}
|
|
| object_spec SAME
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_SAME;
|
|
}
|
|
| object_spec INVISIBLE
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_INVISIBLE;
|
|
}
|
|
| object_spec LEFT_ARROW_HEAD
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_LEFT_ARROW_HEAD;
|
|
}
|
|
| object_spec RIGHT_ARROW_HEAD
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_RIGHT_ARROW_HEAD;
|
|
}
|
|
| object_spec DOUBLE_ARROW_HEAD
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= (HAS_LEFT_ARROW_HEAD|HAS_RIGHT_ARROW_HEAD);
|
|
}
|
|
| object_spec CW
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_CLOCKWISE;
|
|
}
|
|
| object_spec CCW
|
|
{
|
|
$$ = $1;
|
|
$$->flags &= ~IS_CLOCKWISE;
|
|
}
|
|
| object_spec text %prec TEXT
|
|
{
|
|
$$ = $1;
|
|
text_item **p;
|
|
for (p = & $$->text; *p; p = &(*p)->next)
|
|
;
|
|
*p = new text_item($2.str, $2.filename, $2.lineno);
|
|
}
|
|
| object_spec LJUST
|
|
{
|
|
$$ = $1;
|
|
if ($$->text) {
|
|
text_item *p;
|
|
for (p = $$->text; p->next; p = p->next)
|
|
;
|
|
p->adj.h = LEFT_ADJUST;
|
|
}
|
|
}
|
|
| object_spec RJUST
|
|
{
|
|
$$ = $1;
|
|
if ($$->text) {
|
|
text_item *p;
|
|
for (p = $$->text; p->next; p = p->next)
|
|
;
|
|
p->adj.h = RIGHT_ADJUST;
|
|
}
|
|
}
|
|
| object_spec ABOVE
|
|
{
|
|
$$ = $1;
|
|
if ($$->text) {
|
|
text_item *p;
|
|
for (p = $$->text; p->next; p = p->next)
|
|
;
|
|
p->adj.v = ABOVE_ADJUST;
|
|
}
|
|
}
|
|
| object_spec BELOW
|
|
{
|
|
$$ = $1;
|
|
if ($$->text) {
|
|
text_item *p;
|
|
for (p = $$->text; p->next; p = p->next)
|
|
;
|
|
p->adj.v = BELOW_ADJUST;
|
|
}
|
|
}
|
|
| object_spec THICKNESS expr
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= HAS_THICKNESS;
|
|
$$->thickness = $3;
|
|
}
|
|
| object_spec ALIGNED
|
|
{
|
|
$$ = $1;
|
|
$$->flags |= IS_ALIGNED;
|
|
}
|
|
;
|
|
|
|
text:
|
|
TEXT
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| SPRINTF '(' TEXT sprintf_args ')'
|
|
{
|
|
$$.filename = $3.filename;
|
|
$$.lineno = $3.lineno;
|
|
$$.str = do_sprintf($3.str, $4.v, $4.nv);
|
|
a_delete $4.v;
|
|
a_delete $3.str;
|
|
}
|
|
;
|
|
|
|
sprintf_args:
|
|
/* empty */
|
|
{
|
|
$$.v = 0;
|
|
$$.nv = 0;
|
|
$$.maxv = 0;
|
|
}
|
|
| sprintf_args ',' expr
|
|
{
|
|
$$ = $1;
|
|
if ($$.nv >= $$.maxv) {
|
|
if ($$.nv == 0) {
|
|
$$.v = new double[4];
|
|
$$.maxv = 4;
|
|
}
|
|
else {
|
|
double *oldv = $$.v;
|
|
$$.maxv *= 2;
|
|
$$.v = new double[$$.maxv];
|
|
memcpy($$.v, oldv, $$.nv*sizeof(double));
|
|
a_delete oldv;
|
|
}
|
|
}
|
|
$$.v[$$.nv] = $3;
|
|
$$.nv += 1;
|
|
}
|
|
;
|
|
|
|
position:
|
|
position_not_place
|
|
{ $$ = $1; }
|
|
| place
|
|
{
|
|
position pos = $1;
|
|
$$.x = pos.x;
|
|
$$.y = pos.y;
|
|
}
|
|
;
|
|
|
|
position_not_place:
|
|
expr_pair
|
|
{ $$ = $1; }
|
|
| position '+' expr_pair
|
|
{
|
|
$$.x = $1.x + $3.x;
|
|
$$.y = $1.y + $3.y;
|
|
}
|
|
| position '-' expr_pair
|
|
{
|
|
$$.x = $1.x - $3.x;
|
|
$$.y = $1.y - $3.y;
|
|
}
|
|
| '(' position ',' position ')'
|
|
{
|
|
$$.x = $2.x;
|
|
$$.y = $4.y;
|
|
}
|
|
| expr between position AND position
|
|
{
|
|
$$.x = (1.0 - $1)*$3.x + $1*$5.x;
|
|
$$.y = (1.0 - $1)*$3.y + $1*$5.y;
|
|
}
|
|
| expr '<' position ',' position '>'
|
|
{
|
|
$$.x = (1.0 - $1)*$3.x + $1*$5.x;
|
|
$$.y = (1.0 - $1)*$3.y + $1*$5.y;
|
|
}
|
|
;
|
|
|
|
between:
|
|
BETWEEN
|
|
| OF THE WAY BETWEEN
|
|
;
|
|
|
|
expr_pair:
|
|
expr ',' expr
|
|
{ $$.x = $1; $$.y = $3; }
|
|
| '(' expr_pair ')'
|
|
{ $$ = $2; }
|
|
;
|
|
|
|
place:
|
|
label %prec CHOP /* line at A left == line (at A) left */
|
|
{ $$ = $1; }
|
|
| label corner
|
|
{
|
|
path pth($2);
|
|
if (!pth.follow($1, & $$))
|
|
YYABORT;
|
|
}
|
|
| corner label
|
|
{
|
|
path pth($1);
|
|
if (!pth.follow($2, & $$))
|
|
YYABORT;
|
|
}
|
|
| corner OF label
|
|
{
|
|
path pth($1);
|
|
if (!pth.follow($3, & $$))
|
|
YYABORT;
|
|
}
|
|
| HERE
|
|
{
|
|
$$.x = current_position.x;
|
|
$$.y = current_position.y;
|
|
$$.obj = 0;
|
|
}
|
|
;
|
|
|
|
label:
|
|
LABEL
|
|
{
|
|
place *p = lookup_label($1);
|
|
if (!p) {
|
|
lex_error("there is no place `%1'", $1);
|
|
YYABORT;
|
|
}
|
|
$$ = *p;
|
|
a_delete $1;
|
|
}
|
|
| nth_primitive
|
|
{
|
|
$$.obj = $1;
|
|
}
|
|
| label '.' LABEL
|
|
{
|
|
path pth($3);
|
|
if (!pth.follow($1, & $$))
|
|
YYABORT;
|
|
}
|
|
;
|
|
|
|
ordinal:
|
|
ORDINAL
|
|
{ $$ = $1; }
|
|
| '`' any_expr TH
|
|
{
|
|
// XXX Check for overflow (and non-integers?).
|
|
$$ = (int)$2;
|
|
}
|
|
;
|
|
|
|
optional_ordinal_last:
|
|
LAST
|
|
{ $$ = 1; }
|
|
| ordinal LAST
|
|
{ $$ = $1; }
|
|
;
|
|
|
|
nth_primitive:
|
|
ordinal object_type
|
|
{
|
|
int count = 0;
|
|
object *p;
|
|
for (p = olist.head; p != 0; p = p->next)
|
|
if (p->type() == $2 && ++count == $1) {
|
|
$$ = p;
|
|
break;
|
|
}
|
|
if (p == 0) {
|
|
lex_error("there is no %1%2 %3", $1, ordinal_postfix($1),
|
|
object_type_name($2));
|
|
YYABORT;
|
|
}
|
|
}
|
|
| optional_ordinal_last object_type
|
|
{
|
|
int count = 0;
|
|
object *p;
|
|
for (p = olist.tail; p != 0; p = p->prev)
|
|
if (p->type() == $2 && ++count == $1) {
|
|
$$ = p;
|
|
break;
|
|
}
|
|
if (p == 0) {
|
|
lex_error("there is no %1%2 last %3", $1,
|
|
ordinal_postfix($1), object_type_name($2));
|
|
YYABORT;
|
|
}
|
|
}
|
|
;
|
|
|
|
object_type:
|
|
BOX
|
|
{ $$ = BOX_OBJECT; }
|
|
| CIRCLE
|
|
{ $$ = CIRCLE_OBJECT; }
|
|
| ELLIPSE
|
|
{ $$ = ELLIPSE_OBJECT; }
|
|
| ARC
|
|
{ $$ = ARC_OBJECT; }
|
|
| LINE
|
|
{ $$ = LINE_OBJECT; }
|
|
| ARROW
|
|
{ $$ = ARROW_OBJECT; }
|
|
| SPLINE
|
|
{ $$ = SPLINE_OBJECT; }
|
|
| '[' ']'
|
|
{ $$ = BLOCK_OBJECT; }
|
|
| TEXT
|
|
{ $$ = TEXT_OBJECT; }
|
|
;
|
|
|
|
label_path:
|
|
'.' LABEL
|
|
{
|
|
$$ = new path($2);
|
|
}
|
|
| label_path '.' LABEL
|
|
{
|
|
$$ = $1;
|
|
$$->append($3);
|
|
}
|
|
;
|
|
|
|
relative_path:
|
|
corner
|
|
{
|
|
$$ = new path($1);
|
|
}
|
|
/* give this a lower precedence than LEFT and RIGHT so that
|
|
[A: box] with .A left == [A: box] with (.A left) */
|
|
|
|
| label_path %prec TEXT
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| label_path corner
|
|
{
|
|
$$ = $1;
|
|
$$->append($2);
|
|
}
|
|
;
|
|
|
|
path:
|
|
relative_path
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| '(' relative_path ',' relative_path ')'
|
|
{
|
|
$$ = $2;
|
|
$$->set_ypath($4);
|
|
}
|
|
/* The rest of these rules are a compatibility sop. */
|
|
| ORDINAL LAST object_type relative_path
|
|
{
|
|
lex_warning("`%1%2 last %3' in `with' argument ignored",
|
|
$1, ordinal_postfix($1), object_type_name($3));
|
|
$$ = $4;
|
|
}
|
|
| LAST object_type relative_path
|
|
{
|
|
lex_warning("`last %1' in `with' argument ignored",
|
|
object_type_name($2));
|
|
$$ = $3;
|
|
}
|
|
| ORDINAL object_type relative_path
|
|
{
|
|
lex_warning("`%1%2 %3' in `with' argument ignored",
|
|
$1, ordinal_postfix($1), object_type_name($2));
|
|
$$ = $3;
|
|
}
|
|
| LABEL relative_path
|
|
{
|
|
lex_warning("initial `%1' in `with' argument ignored", $1);
|
|
a_delete $1;
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
corner:
|
|
DOT_N
|
|
{ $$ = &object::north; }
|
|
| DOT_E
|
|
{ $$ = &object::east; }
|
|
| DOT_W
|
|
{ $$ = &object::west; }
|
|
| DOT_S
|
|
{ $$ = &object::south; }
|
|
| DOT_NE
|
|
{ $$ = &object::north_east; }
|
|
| DOT_SE
|
|
{ $$ = &object:: south_east; }
|
|
| DOT_NW
|
|
{ $$ = &object::north_west; }
|
|
| DOT_SW
|
|
{ $$ = &object::south_west; }
|
|
| DOT_C
|
|
{ $$ = &object::center; }
|
|
| DOT_START
|
|
{ $$ = &object::start; }
|
|
| DOT_END
|
|
{ $$ = &object::end; }
|
|
| TOP
|
|
{ $$ = &object::north; }
|
|
| BOTTOM
|
|
{ $$ = &object::south; }
|
|
| LEFT
|
|
{ $$ = &object::west; }
|
|
| RIGHT
|
|
{ $$ = &object::east; }
|
|
| UPPER LEFT
|
|
{ $$ = &object::north_west; }
|
|
| LOWER LEFT
|
|
{ $$ = &object::south_west; }
|
|
| UPPER RIGHT
|
|
{ $$ = &object::north_east; }
|
|
| LOWER RIGHT
|
|
{ $$ = &object::south_east; }
|
|
| LEFT_CORNER
|
|
{ $$ = &object::west; }
|
|
| RIGHT_CORNER
|
|
{ $$ = &object::east; }
|
|
| UPPER LEFT_CORNER
|
|
{ $$ = &object::north_west; }
|
|
| LOWER LEFT_CORNER
|
|
{ $$ = &object::south_west; }
|
|
| UPPER RIGHT_CORNER
|
|
{ $$ = &object::north_east; }
|
|
| LOWER RIGHT_CORNER
|
|
{ $$ = &object::south_east; }
|
|
| CENTER
|
|
{ $$ = &object::center; }
|
|
| START
|
|
{ $$ = &object::start; }
|
|
| END
|
|
{ $$ = &object::end; }
|
|
;
|
|
|
|
expr:
|
|
VARIABLE
|
|
{
|
|
if (!lookup_variable($1, & $$)) {
|
|
lex_error("there is no variable `%1'", $1);
|
|
YYABORT;
|
|
}
|
|
a_delete $1;
|
|
}
|
|
| NUMBER
|
|
{ $$ = $1; }
|
|
| place DOT_X
|
|
{
|
|
if ($1.obj != 0)
|
|
$$ = $1.obj->origin().x;
|
|
else
|
|
$$ = $1.x;
|
|
}
|
|
| place DOT_Y
|
|
{
|
|
if ($1.obj != 0)
|
|
$$ = $1.obj->origin().y;
|
|
else
|
|
$$ = $1.y;
|
|
}
|
|
| place DOT_HT
|
|
{
|
|
if ($1.obj != 0)
|
|
$$ = $1.obj->height();
|
|
else
|
|
$$ = 0.0;
|
|
}
|
|
| place DOT_WID
|
|
{
|
|
if ($1.obj != 0)
|
|
$$ = $1.obj->width();
|
|
else
|
|
$$ = 0.0;
|
|
}
|
|
| place DOT_RAD
|
|
{
|
|
if ($1.obj != 0)
|
|
$$ = $1.obj->radius();
|
|
else
|
|
$$ = 0.0;
|
|
}
|
|
| expr '+' expr
|
|
{ $$ = $1 + $3; }
|
|
| expr '-' expr
|
|
{ $$ = $1 - $3; }
|
|
| expr '*' expr
|
|
{ $$ = $1 * $3; }
|
|
| expr '/' expr
|
|
{
|
|
if ($3 == 0.0) {
|
|
lex_error("division by zero");
|
|
YYABORT;
|
|
}
|
|
$$ = $1/$3;
|
|
}
|
|
| expr '%' expr
|
|
{
|
|
if ($3 == 0.0) {
|
|
lex_error("modulus by zero");
|
|
YYABORT;
|
|
}
|
|
$$ = fmod($1, $3);
|
|
}
|
|
| expr '^' expr
|
|
{
|
|
errno = 0;
|
|
$$ = pow($1, $3);
|
|
if (errno == EDOM) {
|
|
lex_error("arguments to `^' operator out of domain");
|
|
YYABORT;
|
|
}
|
|
if (errno == ERANGE) {
|
|
lex_error("result of `^' operator out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| '-' expr %prec '!'
|
|
{ $$ = -$2; }
|
|
| '(' any_expr ')'
|
|
{ $$ = $2; }
|
|
| SIN '(' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = sin($3);
|
|
if (errno == ERANGE) {
|
|
lex_error("sin result out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| COS '(' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = cos($3);
|
|
if (errno == ERANGE) {
|
|
lex_error("cos result out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| ATAN2 '(' any_expr ',' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = atan2($3, $5);
|
|
if (errno == EDOM) {
|
|
lex_error("atan2 argument out of domain");
|
|
YYABORT;
|
|
}
|
|
if (errno == ERANGE) {
|
|
lex_error("atan2 result out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| LOG '(' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = log10($3);
|
|
if (errno == ERANGE) {
|
|
lex_error("log result out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| EXP '(' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = pow(10.0, $3);
|
|
if (errno == ERANGE) {
|
|
lex_error("exp result out of range");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| SQRT '(' any_expr ')'
|
|
{
|
|
errno = 0;
|
|
$$ = sqrt($3);
|
|
if (errno == EDOM) {
|
|
lex_error("sqrt argument out of domain");
|
|
YYABORT;
|
|
}
|
|
}
|
|
| K_MAX '(' any_expr ',' any_expr ')'
|
|
{ $$ = $3 > $5 ? $3 : $5; }
|
|
| K_MIN '(' any_expr ',' any_expr ')'
|
|
{ $$ = $3 < $5 ? $3 : $5; }
|
|
| INT '(' any_expr ')'
|
|
{ $$ = floor($3); }
|
|
| RAND '(' any_expr ')'
|
|
{ $$ = 1.0 + floor(((rand()&0x7fff)/double(0x7fff))*$3); }
|
|
| RAND '(' ')'
|
|
{
|
|
/* return a random number in the range [0,1) */
|
|
/* portable, but not very random */
|
|
$$ = (rand() & 0x7fff) / double(0x8000);
|
|
}
|
|
| SRAND '(' any_expr ')'
|
|
{ $$ = 0; srand((unsigned int)$3); }
|
|
| expr '<' expr
|
|
{ $$ = ($1 < $3); }
|
|
| expr LESSEQUAL expr
|
|
{ $$ = ($1 <= $3); }
|
|
| expr '>' expr
|
|
{ $$ = ($1 > $3); }
|
|
| expr GREATEREQUAL expr
|
|
{ $$ = ($1 >= $3); }
|
|
| expr EQUALEQUAL expr
|
|
{ $$ = ($1 == $3); }
|
|
| expr NOTEQUAL expr
|
|
{ $$ = ($1 != $3); }
|
|
| expr ANDAND expr
|
|
{ $$ = ($1 != 0.0 && $3 != 0.0); }
|
|
| expr OROR expr
|
|
{ $$ = ($1 != 0.0 || $3 != 0.0); }
|
|
| '!' expr
|
|
{ $$ = ($2 == 0.0); }
|
|
|
|
;
|
|
|
|
%%
|
|
|
|
/* bison defines const to be empty unless __STDC__ is defined, which it
|
|
isn't under cfront */
|
|
|
|
#ifdef const
|
|
#undef const
|
|
#endif
|
|
|
|
static struct {
|
|
const char *name;
|
|
double val;
|
|
int scaled; // non-zero if val should be multiplied by scale
|
|
} defaults_table[] = {
|
|
{ "arcrad", .25, 1 },
|
|
{ "arrowht", .1, 1 },
|
|
{ "arrowwid", .05, 1 },
|
|
{ "circlerad", .25, 1 },
|
|
{ "boxht", .5, 1 },
|
|
{ "boxwid", .75, 1 },
|
|
{ "boxrad", 0.0, 1 },
|
|
{ "dashwid", .05, 1 },
|
|
{ "ellipseht", .5, 1 },
|
|
{ "ellipsewid", .75, 1 },
|
|
{ "moveht", .5, 1 },
|
|
{ "movewid", .5, 1 },
|
|
{ "lineht", .5, 1 },
|
|
{ "linewid", .5, 1 },
|
|
{ "textht", 0.0, 1 },
|
|
{ "textwid", 0.0, 1 },
|
|
{ "scale", 1.0, 0 },
|
|
{ "linethick", -1.0, 0 }, // in points
|
|
{ "fillval", .5, 0 },
|
|
{ "arrowhead", 1.0, 0 },
|
|
{ "maxpswid", 8.5, 0 },
|
|
{ "maxpsht", 11.0, 0 },
|
|
};
|
|
|
|
place *lookup_label(const char *label)
|
|
{
|
|
saved_state *state = current_saved_state;
|
|
PTABLE(place) *tbl = current_table;
|
|
for (;;) {
|
|
place *pl = tbl->lookup(label);
|
|
if (pl)
|
|
return pl;
|
|
if (!state)
|
|
return 0;
|
|
tbl = state->tbl;
|
|
state = state->prev;
|
|
}
|
|
}
|
|
|
|
void define_label(const char *label, const place *pl)
|
|
{
|
|
place *p = new place;
|
|
*p = *pl;
|
|
current_table->define(label, p);
|
|
}
|
|
|
|
int lookup_variable(const char *name, double *val)
|
|
{
|
|
place *pl = lookup_label(name);
|
|
if (pl) {
|
|
*val = pl->x;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void define_variable(const char *name, double val)
|
|
{
|
|
place *p = new place;
|
|
p->obj = 0;
|
|
p->x = val;
|
|
p->y = 0.0;
|
|
current_table->define(name, p);
|
|
if (strcmp(name, "scale") == 0) {
|
|
// When the scale changes, reset all scaled pre-defined variables to
|
|
// their default values.
|
|
for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
|
|
if (defaults_table[i].scaled)
|
|
define_variable(defaults_table[i].name, val*defaults_table[i].val);
|
|
}
|
|
}
|
|
|
|
// called once only (not once per parse)
|
|
|
|
void parse_init()
|
|
{
|
|
current_direction = RIGHT_DIRECTION;
|
|
current_position.x = 0.0;
|
|
current_position.y = 0.0;
|
|
// This resets everything to its default value.
|
|
reset_all();
|
|
}
|
|
|
|
void reset(const char *nm)
|
|
{
|
|
for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
|
|
if (strcmp(nm, defaults_table[i].name) == 0) {
|
|
double val = defaults_table[i].val;
|
|
if (defaults_table[i].scaled) {
|
|
double scale;
|
|
lookup_variable("scale", &scale);
|
|
val *= scale;
|
|
}
|
|
define_variable(defaults_table[i].name, val);
|
|
return;
|
|
}
|
|
lex_error("`%1' is not a predefined variable", nm);
|
|
}
|
|
|
|
void reset_all()
|
|
{
|
|
// We only have to explicitly reset the pre-defined variables that
|
|
// aren't scaled because `scale' is not scaled, and changing the
|
|
// value of `scale' will reset all the pre-defined variables that
|
|
// are scaled.
|
|
for (int i = 0; i < sizeof(defaults_table)/sizeof(defaults_table[0]); i++)
|
|
if (!defaults_table[i].scaled)
|
|
define_variable(defaults_table[i].name, defaults_table[i].val);
|
|
}
|
|
|
|
// called after each parse
|
|
|
|
void parse_cleanup()
|
|
{
|
|
while (current_saved_state != 0) {
|
|
delete current_table;
|
|
current_table = current_saved_state->tbl;
|
|
saved_state *tem = current_saved_state;
|
|
current_saved_state = current_saved_state->prev;
|
|
delete tem;
|
|
}
|
|
assert(current_table == &top_table);
|
|
PTABLE_ITERATOR(place) iter(current_table);
|
|
const char *key;
|
|
place *pl;
|
|
while (iter.next(&key, &pl))
|
|
if (pl->obj != 0) {
|
|
position pos = pl->obj->origin();
|
|
pl->obj = 0;
|
|
pl->x = pos.x;
|
|
pl->y = pos.y;
|
|
}
|
|
while (olist.head != 0) {
|
|
object *tem = olist.head;
|
|
olist.head = olist.head->next;
|
|
delete tem;
|
|
}
|
|
olist.tail = 0;
|
|
current_direction = RIGHT_DIRECTION;
|
|
current_position.x = 0.0;
|
|
current_position.y = 0.0;
|
|
}
|
|
|
|
const char *ordinal_postfix(int n)
|
|
{
|
|
if (n < 10 || n > 20)
|
|
switch (n % 10) {
|
|
case 1:
|
|
return "st";
|
|
case 2:
|
|
return "nd";
|
|
case 3:
|
|
return "rd";
|
|
}
|
|
return "th";
|
|
}
|
|
|
|
const char *object_type_name(object_type type)
|
|
{
|
|
switch (type) {
|
|
case BOX_OBJECT:
|
|
return "box";
|
|
case CIRCLE_OBJECT:
|
|
return "circle";
|
|
case ELLIPSE_OBJECT:
|
|
return "ellipse";
|
|
case ARC_OBJECT:
|
|
return "arc";
|
|
case SPLINE_OBJECT:
|
|
return "spline";
|
|
case LINE_OBJECT:
|
|
return "line";
|
|
case ARROW_OBJECT:
|
|
return "arrow";
|
|
case MOVE_OBJECT:
|
|
return "move";
|
|
case TEXT_OBJECT:
|
|
return "\"\"";
|
|
case BLOCK_OBJECT:
|
|
return "[]";
|
|
case OTHER_OBJECT:
|
|
case MARK_OBJECT:
|
|
default:
|
|
break;
|
|
}
|
|
return "object";
|
|
}
|
|
|
|
static char sprintf_buf[1024];
|
|
|
|
char *format_number(const char *form, double n)
|
|
{
|
|
if (form == 0)
|
|
form = "%g";
|
|
else {
|
|
// this is a fairly feeble attempt at validation of the format
|
|
int nspecs = 0;
|
|
for (const char *p = form; *p != '\0'; p++)
|
|
if (*p == '%') {
|
|
if (p[1] == '%')
|
|
p++;
|
|
else
|
|
nspecs++;
|
|
}
|
|
if (nspecs > 1) {
|
|
lex_error("bad format `%1'", form);
|
|
return strsave(form);
|
|
}
|
|
}
|
|
sprintf(sprintf_buf, form, n);
|
|
return strsave(sprintf_buf);
|
|
}
|
|
|
|
char *do_sprintf(const char *form, const double *v, int nv)
|
|
{
|
|
string result;
|
|
int i = 0;
|
|
string one_format;
|
|
while (*form) {
|
|
if (*form == '%') {
|
|
one_format += *form++;
|
|
for (; *form != '\0' && strchr("#-+ 0123456789.", *form) != 0; form++)
|
|
one_format += *form;
|
|
if (*form == '\0' || strchr("eEfgG%", *form) == 0) {
|
|
lex_error("bad sprintf format");
|
|
result += one_format;
|
|
result += form;
|
|
break;
|
|
}
|
|
if (*form == '%') {
|
|
one_format += *form++;
|
|
one_format += '\0';
|
|
sprintf(sprintf_buf, one_format.contents());
|
|
}
|
|
else {
|
|
if (i >= nv) {
|
|
lex_error("too few arguments to sprintf");
|
|
result += one_format;
|
|
result += form;
|
|
break;
|
|
}
|
|
one_format += *form++;
|
|
one_format += '\0';
|
|
sprintf(sprintf_buf, one_format.contents(), v[i++]);
|
|
}
|
|
one_format.clear();
|
|
result += sprintf_buf;
|
|
}
|
|
else
|
|
result += *form++;
|
|
}
|
|
result += '\0';
|
|
return strsave(result.contents());
|
|
}
|