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[unix-history] / usr / src / usr.bin / indent / indent_globs.h

/*
 * Copyright (c) 1980 Regents of the University of California.
 * Copyright (c) 1976 Board of Trustees of the University of Illinois.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley and the University
 * of Illinois, Urbana.  The name of either
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)indent_globs.h	5.6 (Berkeley) %G%
 */

/*
FILE NAME:
	indent_globs.h

PURPOSE:
	This include file contains the declarations for all global variables
	used in indent.

GLOBALS:
	The names of all of the variables will not be repeated here.  The 
	declarations start on the next page.

FUNCTIONS:
	None
*/

#include <stdio.h>

#define BACKSLASH '\\'
#define bufsize 600	   /* size of internal buffers */
#define inp_bufs 600	   /* size of input buffer */
#define sc_size 5000	   /* size of save_com buffer */
#define label_offset 2	   /* number of levels a label is placed to left of code 
		   */

#define tabsize 8  /* the size of a tab */
#define tabmask 0177770	   /* mask used when figuring length of lines with tabs */


#define false 0
#define true  1


FILE   *input;     /* the fid for the input file */
FILE   *output;    /* the output file */

char    labbuf[bufsize];	/* buffer for label */
char   *s_lab;     /* start ... */
char   *e_lab;     /* .. and end of stored label */

char    codebuf[bufsize];	/* buffer for code section */
char   *s_code;    /* start ... */
char   *e_code;    /* .. and end of stored code */

char    combuf[bufsize];	/* buffer for comments */
char   *s_com;     /* start ... */
char   *e_com;     /* ... and end of stored comments */

char    in_buffer[inp_bufs];	/* input buffer */
char   *buf_ptr;   /* ptr to next character to be taken from in_buffer */
char   *buf_end;   /* ptr to first after last char in in_buffer */

char    save_com[sc_size];	/* input text is saved here when looking for the brace
		      after an if, while, etc */
char   *sc_end;    /* pointer into save_com buffer */

char   *bp_save;   /* saved value of buf_ptr when taking input from
		      save_com */
char   *be_save;   /* similarly saved value of buf_end */

char    token[bufsize];	/* the last token scanned */



int	blanklines_after_declarations;
int	blanklines_before_blockcomments;
int	blanklines_after_procs;
int	swallow_optional_blanklines;
int	n_real_blanklines;
int	prefix_blankline_requested;
int	postfix_blankline_requested;
int     break_comma;	/* when true and not in parens, break after a comma */
int     btype_2;   /* when true, brace should be on same line as if,
		      while, etc */
float   case_ind;  /* indentation level to be used for a "case n:" */
int     code_lines;/* count of lines with code */
int     had_eof;   /* set to true when input is exhausted */
int     line_no;   /* the current line number. */
int     max_col;   /* the maximum allowable line length */
int     pointer_as_binop;	/* when true, "->" is treated as a binary
				   operator (giving, e.g., "p -> f") */
int     verbose;   /* when true, non-essential error messages are printed 
		   */
int	cuddle_else;		/* true if else should cuddle up to '}' */
int	star_comment_cont;	/* true iff comment continuation lines should
				   have stars at the beginning of each line.
				   */
int     comment_delimiter_on_blankline;
int     troff;			/* true iff were generating troff input */
int	procnames_start_line;	/* if true, the names of procedures being
				   defined get placed in column 1 (ie. a
				   newline is placed between the type of the
				   procedure and its name) */
int	proc_calls_space;	/* If true, procedure calls look like:
				   foo(bar) rather than foo (bar) */
int	format_col1_comments;	/* If comments which start in column 1 are to
				   be magically reformatted (just like comments that
				   begin in later columns) */
int	inhibit_formatting;	/* true if INDENT OFF is in effect */
int	suppress_blanklines;	/* set iff following blanklines should be
				   suppressed */
int	continuation_indent;	/* set to the indentation between the edge of
				   code and continuation lines */
int	lineup_to_parens;	/* if true, continued code within parens will
				   be lined up to the open paren */
int	block_comment_max_col;


struct parser_state {
    int         last_token;
    int         p_stack[50];	/* this is the parsers stack */
    int         il[50];		/* this stack stores indentation levels */
    float       cstk[50];	/* used to store case stmt indentation
				 * levels */
    int         box_com;	/* set to true when we are in a "boxed"
				 * comment. In that case, the first
				 * non-blank char should be lined up with
				 * the / in /* */
    int         comment_delta,
                n_comment_delta;
    int         cast_mask;	/* indicates which close parens close off
				 * casts */
    int		sizeof_mask;	/* indicates which close parens close off
				   sizeof''s */
    int         block_init;	/* true iff inside a block initialization */
    int         last_nl;	/* this is true if the last thing scanned
				 * was a newline */
    int         in_or_st;	/* Will be true iff there has been a
				 * declarator (e.g. int or char) and no
				 * left paren since the last semicolon.
				 * When true, a '{' is starting a
				 * structure definition or an
				 * initialization list */
    int         bl_line;	/* set to 1 by dump_line if the line is
				 * blank */
    int         col_1;		/* set to true if the last token started
				 * in column 1 */
    int         com_col;	/* this is the column in which the current
				 * coment should start */
    int         com_ind;	/* the column in which comments to the
				 * right of code should start */
    int         com_lines;	/* the number of lines with comments, set
				 * by dump_line */
    int         dec_nest;	/* current nesting level for structure or
				 * init */
    int         decl_com_ind;	/* the column in which comments after
				 * declarations should be put */
    int         decl_on_line;	/* set to true if this line of code has
				 * part of a declaration on it */
    int         i_l_follow;	/* the level to which ind_level should be
				 * set after the current line is printed */
    int         in_decl;	/* set to true when we are in a
				 * declaration stmt.  The processing of
				 * braces is then slightly different */
    int         in_stmt;	/* set to 1 while in a stmt */
    int         ind_level;	/* the current indentation level */
    int         ind_size;	/* the size of one indentation level */
    int         ind_stmt;	/* set to 1 if next line should have an
				 * extra indentation level because we are
				 * in the middle of a stmt */
    int         last_u_d;	/* set to true after scanning a token
				 * which forces a following operator to be
				 * unary */
    int         leave_comma;	/* if true, never break declarations after
				 * commas */
    int         ljust_decl;	/* true if declarations should be left
				 * justified */
    int         out_coms;	/* the number of comments processed, set
				 * by pr_comment */
    int         out_lines;	/* the number of lines written, set by
				 * dump_line */
    int         p_l_follow;	/* used to remember how to indent
				 * following statement */
    int         paren_level;	/* parenthesization level. used to indent
				 * within stmts */
    short       paren_indents[20];	/* column positions of each paren */
    int         pcase;		/* set to 1 if the current line label is a
				 * case.  It is printed differently from 
				 * a regular label */
    int         search_brace;	/* set to true by parse when it is
				 * necessary to buffer up all info up to
				 * the start of a stmt after an if, while,
				 * etc */
    int         unindent_displace;	/* comments not to the right of
					 * code will be placed this many
					 * indentation levels to the left
					 * of code */
    int         use_ff;		/* set to one if the current line should
				 * be terminated with a form feed */
    int         want_blank;	/* set to true when the following token
				 * should be prefixed by a blank. (Said
				 * prefixing is ignored in some cases.) */
    int         else_if;	/* True iff else if pairs should be
				 * handled specially */
    int         decl_indent;	/* column to indent declared identifiers
				 * to */
    int         its_a_keyword;
    int		sizeof_keyword;
    int         dumped_decl_indent;
    float       case_indent;	/* The distance to indent case labels from
				 * the switch statement */
    int         in_parameter_declaration;
    int         indent_parameters;
    int         tos;		/* pointer to top of stack */
    char        procname[100];	/* The name of the current procedure */
    int		just_saw_decl;
}           ps;

int ifdef_level;
struct parser_state state_stack[5];
struct parser_state match_state[5];