vcg.h

bison 2.0 主要可以用来做语法分析用的

/* VCG description handler for Bison.

   Copyright (C) 2001, 2002 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   Bison 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.

   Bison 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 Bison; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef VCG_H_
# define VCG_H_

/* VCG color map. The 32 prime predefined colors. */
enum color
{
  white		= 0,
  blue,
  red,
  green		= 3,
  yellow,
  magenta,
  cyan		= 6,
  darkgrey,
  darkblue,
  darkred	= 9,
  darkgreen,
  darkyellow,
  darkmagenta	= 12,
  darkcyan,
  gold,
  lightgrey	= 15,
  lightblue,
  lightred,
  lightgreen	= 18,
  lightyellow,
  lightmagenta,
  lightcyan	= 21,
  lilac,
  turquoise,
  aquamarine	= 24,
  khaki,
  purple,
  yellowgreen	= 27,
  pink,
  orange,
  orchid,
  black		= 31
};

/* VCG textmode. Specify the adjustement of the text within the border of a summary node. */
enum textmode
{
  centered,
  left_justify,
  right_justify
};

/* VCG shapes. Used for nodes shapes. */
enum shape
{
  box,
  rhomb,
  ellipse,
  triangle
};

/* Structure for colorentries.  */
struct colorentry
{
  int color_index;
  int red_cp;
  int green_cp;
  int blue_cp;
  struct colorentry *next;
};

/* Structure to construct lists of classnames. */
struct classname
{
  int no; /* Class number */
  const char *name; /* Name associated to the class no. */
  struct classname *next; /* next name class association. */
};

/* Structure is in infoname.  */
struct infoname
{
  int integer;
  char const *chars;
  struct infoname *next;
};

/* VCG decision yes/no. */
enum decision
{
  yes,
  no
};

/* VCG graph orientation. */
enum orientation
{
  top_to_bottom,
  bottom_to_top,
  left_to_right,
  right_to_left
};

/* VCG alignment for node alignement. */
enum alignment
{
  center,
  top,
  bottom
};

/* VCG arrow mode. */
enum arrow_mode
{
  fixed,
  free_a
};

/* VCG crossing weight type. */
enum crossing_type
{
  bary,
  median,
  barymedian,
  medianbary
};

/* VCG views. */
enum view
{
  normal_view,
  cfish,
  pfish,
  fcfish,
  fpfish
};

/*------------------------------------------------------.
| Node attributs list. structure that describes a node. |
`------------------------------------------------------*/

struct node
{
  /* Title the unique string identifying the node. This attribute is
     mandatory. */
  const char *title;

  /* Label the text displayed inside the node. If no label is specified
     then the title of the node will be used. Note that this text may
     contain control characters like NEWLINE that influences the size of
     the node. */
  const char *label;

  /* loc is the location as x, y position relatively to the system of
     coordinates of the graph. Locations are specified in the form
     loc: - x: xpos y: ypos "". The locations of nodes are only valid,
     if the whole graph is fully specified with locations and no part is
     folded. The layout algorithm of the tool calculates appropriate x, y
     positions, if at least one node that must be drawn (i.e., is not
     hidden by folding or edge classes) does not have fixed specified
     locations.
     Default is none. */
  int locx;
  int locy;

  /* vertical order is the level position (rank) of the node. We can also
     specify level: int. Level specifications are only valid, if the
     layout is calculated, i.e. if at least one node does not have a
     fixed location specification. The layout algorithm partitioned all
     nodes into levels 0...maxlevel. Nodes at the level 0 are on the
     upper corner. The algorithm is able to calculate appropriate levels
     for the nodes automatically, if no fixed levels are given.
     Specifications of levels are additional constraints, that may be
     ignored, if they are in conflict with near edge specifications.
     Default values are unspecified. */
  int vertical_order;

  /* horizontal order is the horizontal position of the node within a
     level. The nodes which are specified with horizontal positions are
     ordered according to these positions within the levels. The nodes
     which do not have this attribute are inserted into this ordering by
     the crossing reduction mechanism. Note that connected components are
     handled separately, thus it is not possible to intermix such
     components by specifying a horizontal order. If the algorithm for
     downward laid out trees is used, the horizontal order influences
     only the order of the child nodes at a node, but not the order of
     the whole level.
     Default is unspecified. */
  int horizontal_order;

  /* width, height is the width and height of a node including the border.
     If no value (in pixels) is given then width and height are
     calculated from the size of the label.
     Default are width and height of the label. */
  int width;
  int height;

  /* shrink, stretch gives the shrinking and stretching factor of the
     node. The values of the attributes width, height, borderwidth and
     the size of the label text is scaled by ((stretch=shrink) \Lambda
     100) percent. Note that the actual scale value is determined by the
     scale value of a node relatively to a scale value of the graph,
     i.e. if (stretch,shrink) = (2,1) for the graph and (stretch,shrink)
     = (2,1) for the node of the graph, then the node is scaled by the
     factor 4 compared to the normal size. The scale value can also be
     specified by scaling: float.
     Default are 1,1. */
  int shrink;
  int stretch;

  /* folding specifies the default folding of the nodes. The folding k
     (with k ? 0) means that the graph part that is reachable via edges
     of a class less or equal to k is folded and displayed as one node.
     There are commands to unfold such summary nodes, see section 5. If
     no folding is specified for a node, then the node may be folded if
     it is in the region of another node that starts the folding. If
     folding 0 is specified, then the node is never folded. In this case
     the folding stops at the predecessors of this node, if it is
     reachable from another folding node. The summary node inherits some
     attributes from the original node which starts the folding (all
     color attributes, textmode and label, but not the location). A
     folded region may contain folded regions with smaller folding class
     values (nested foldings). If there is more than one node that start
     the folding of the same region (this implies that the folding class
     values are equal) then the attributes are inherited by one of these
     nodes nondeterministically. If foldnode attributes are specified,
     then the summary node attributes are inherited from these attributes.
     Default is none. */
  int folding;

  /* shape specifies the visual appearance of a node: box, rhomb, ellipse,
     and triangle. The drawing of ellipses is much slower than the drawing
     of the other shapes.
     Default is box. */
  enum shape shape;

  /* textmode specifies the adjustment of the text within the border of a
     node. The possibilities are center, left.justify and right.justify.
     Default is center. */
  enum textmode textmode;

  /* borderwidth specifies the thickness of the node's border in pixels.
     color is the background color of the node. If none is given, the
     node is white. For the possibilities, see the attribute color for
     graphs.
     Default is 2. */
  int borderwidth;

  /* node color.
     Default is white or transparent, */
  enum color color;

  /* textcolor is the color for the label text. bordercolor is the color
     of the border. Default color is the textcolor. info1, info2, info3
     combines additional text labels with a node or a folded graph. info1,
     Default is black. */
  enum color textcolor;

  /* info2, info3 can be selected from the menu. The corresponding text
     labels can be shown by mouse clicks on nodes.
     Default are null strings. */
  const char *infos[3];

  /* Node border color.
     Default is textcolor. */
  enum color bordercolor;

  /* Next node node... */
  struct node *next;
};

/* typedef alias. */
typedef struct node node;

/*-------------------------------------------------------.
| Edge attributs list. Structure that describes an edge. |
`-------------------------------------------------------*/

/* VCG Edge type. */
enum edge_type
{
  normal_edge,
  back_edge,
  near_edge,
  bent_near_edge
};

/* Structs enum definitions for edges. */
enum linestyle
{
  continuous,
  dashed,
  dotted,
  invisible
};

enum arrowstyle
{
  solid,
  line,
  none
};

/* The struct edge itself. */
struct edge